qedf_main.c

   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 <linux/phylink.h>
  17#include <scsi/libfc.h>
  18#include <scsi/scsi_host.h>
  19#include <scsi/fc_frame.h>
  20#include <linux/if_ether.h>
  21#include <linux/if_vlan.h>
  22#include <linux/cpu.h>
  23#include "qedf.h"
  24#include "qedf_dbg.h"
  25#include <uapi/linux/pci_regs.h>
  26
  27const struct qed_fcoe_ops *qed_ops;
  28
  29static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
  30static void qedf_remove(struct pci_dev *pdev);
  31static void qedf_shutdown(struct pci_dev *pdev);
  32static void qedf_schedule_recovery_handler(void *dev);
  33static void qedf_recovery_handler(struct work_struct *work);
  34static int qedf_suspend(struct pci_dev *pdev, pm_message_t state);
  35
  36/*
  37 * Driver module parameters.
  38 */
  39static unsigned int qedf_dev_loss_tmo = 60;
  40module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
  41MODULE_PARM_DESC(dev_loss_tmo,  " dev_loss_tmo setting for attached "
  42	"remote ports (default 60)");
  43
  44uint qedf_debug = QEDF_LOG_INFO;
  45module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR);
  46MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
  47	" mask");
  48
  49static uint qedf_fipvlan_retries = 60;
  50module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
  51MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
  52	"before giving up (default 60)");
  53
  54static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
  55module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
  56MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
  57	"(default 1002).");
  58
  59static int qedf_default_prio = -1;
  60module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
  61MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
  62	" traffic (value between 0 and 7, default 3).");
  63
  64uint qedf_dump_frames;
  65module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
  66MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
  67	"(default off)");
  68
  69static uint qedf_queue_depth;
  70module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
  71MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
  72	"by the qedf driver. Default is 0 (use OS default).");
  73
  74uint qedf_io_tracing;
  75module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
  76MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
  77	"into trace buffer. (default off).");
  78
  79static uint qedf_max_lun = MAX_FIBRE_LUNS;
  80module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
  81MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
  82	"supports. (default 0xffffffff)");
  83
  84uint qedf_link_down_tmo;
  85module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
  86MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
  87	"link is down by N seconds.");
  88
  89bool qedf_retry_delay;
  90module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
  91MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
  92	"delay handling (default off).");
  93
  94static bool qedf_dcbx_no_wait;
  95module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
  96MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
  97	"sending FIP VLAN requests on link up (Default: off).");
  98
  99static uint qedf_dp_module;
 100module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
 101MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
 102	"qed module during probe.");
 103
 104static uint qedf_dp_level = QED_LEVEL_NOTICE;
 105module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
 106MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module  "
 107	"during probe (0-3: 0 more verbose).");
 108
 109static bool qedf_enable_recovery = true;
 110module_param_named(enable_recovery, qedf_enable_recovery,
 111		bool, S_IRUGO | S_IWUSR);
 112MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware "
 113		"interface level errors 0 = Disabled, 1 = Enabled (Default: 1).");
 114
 115struct workqueue_struct *qedf_io_wq;
 116
 117static struct fcoe_percpu_s qedf_global;
 118static DEFINE_SPINLOCK(qedf_global_lock);
 119
 120static struct kmem_cache *qedf_io_work_cache;
 121
 122void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
 123{
 124	int vlan_id_tmp = 0;
 125
 126	vlan_id_tmp = vlan_id  | (qedf->prio << VLAN_PRIO_SHIFT);
 127	qedf->vlan_id = vlan_id_tmp;
 128	QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 129		  "Setting vlan_id=0x%04x prio=%d.\n",
 130		  vlan_id_tmp, qedf->prio);
 131}
 132
 133/* Returns true if we have a valid vlan, false otherwise */
 134static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
 135{
 136
 137	while (qedf->fipvlan_retries--) {
 138		/* This is to catch if link goes down during fipvlan retries */
 139		if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 140			QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
 141			return false;
 142		}
 143
 144		if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 145			QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n");
 146			return false;
 147		}
 148
 149		if (qedf->vlan_id > 0) {
 150			QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 151				  "vlan = 0x%x already set, calling ctlr_link_up.\n",
 152				  qedf->vlan_id);
 153			if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
 154				fcoe_ctlr_link_up(&qedf->ctlr);
 155			return true;
 156		}
 157
 158		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 159			   "Retry %d.\n", qedf->fipvlan_retries);
 160		init_completion(&qedf->fipvlan_compl);
 161		qedf_fcoe_send_vlan_req(qedf);
 162		wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ);
 163	}
 164
 165	return false;
 166}
 167
 168static void qedf_handle_link_update(struct work_struct *work)
 169{
 170	struct qedf_ctx *qedf =
 171	    container_of(work, struct qedf_ctx, link_update.work);
 172	int rc;
 173
 174	QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
 175		  atomic_read(&qedf->link_state));
 176
 177	if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 178		rc = qedf_initiate_fipvlan_req(qedf);
 179		if (rc)
 180			return;
 181
 182		if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
 183			QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 184				  "Link is down, resetting vlan_id.\n");
 185			qedf->vlan_id = 0;
 186			return;
 187		}
 188
 189		/*
 190		 * If we get here then we never received a repsonse to our
 191		 * fip vlan request so set the vlan_id to the default and
 192		 * tell FCoE that the link is up
 193		 */
 194		QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
 195			   "response, falling back to default VLAN %d.\n",
 196			   qedf_fallback_vlan);
 197		qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 198
 199		/*
 200		 * Zero out data_src_addr so we'll update it with the new
 201		 * lport port_id
 202		 */
 203		eth_zero_addr(qedf->data_src_addr);
 204		fcoe_ctlr_link_up(&qedf->ctlr);
 205	} else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
 206		/*
 207		 * If we hit here and link_down_tmo_valid is still 1 it means
 208		 * that link_down_tmo timed out so set it to 0 to make sure any
 209		 * other readers have accurate state.
 210		 */
 211		atomic_set(&qedf->link_down_tmo_valid, 0);
 212		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 213		    "Calling fcoe_ctlr_link_down().\n");
 214		fcoe_ctlr_link_down(&qedf->ctlr);
 215		if (qedf_wait_for_upload(qedf) == false)
 216			QEDF_ERR(&qedf->dbg_ctx,
 217				 "Could not upload all sessions.\n");
 218		/* Reset the number of FIP VLAN retries */
 219		qedf->fipvlan_retries = qedf_fipvlan_retries;
 220	}
 221}
 222
 223#define	QEDF_FCOE_MAC_METHOD_GRANGED_MAC		1
 224#define QEDF_FCOE_MAC_METHOD_FCF_MAP			2
 225#define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC		3
 226static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
 227{
 228	u8 *granted_mac;
 229	struct fc_frame_header *fh = fc_frame_header_get(fp);
 230	u8 fc_map[3];
 231	int method = 0;
 232
 233	/* Get granted MAC address from FIP FLOGI payload */
 234	granted_mac = fr_cb(fp)->granted_mac;
 235
 236	/*
 237	 * We set the source MAC for FCoE traffic based on the Granted MAC
 238	 * address from the switch.
 239	 *
 240	 * If granted_mac is non-zero, we used that.
 241	 * If the granted_mac is zeroed out, created the FCoE MAC based on
 242	 * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
 243	 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
 244	 * d_id of the FLOGI frame.
 245	 */
 246	if (!is_zero_ether_addr(granted_mac)) {
 247		ether_addr_copy(qedf->data_src_addr, granted_mac);
 248		method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
 249	} else if (qedf->ctlr.sel_fcf->fc_map != 0) {
 250		hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
 251		qedf->data_src_addr[0] = fc_map[0];
 252		qedf->data_src_addr[1] = fc_map[1];
 253		qedf->data_src_addr[2] = fc_map[2];
 254		qedf->data_src_addr[3] = fh->fh_d_id[0];
 255		qedf->data_src_addr[4] = fh->fh_d_id[1];
 256		qedf->data_src_addr[5] = fh->fh_d_id[2];
 257		method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
 258	} else {
 259		fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
 260		method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
 261	}
 262
 263	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 264	    "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
 265}
 266
 267static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
 268	void *arg)
 269{
 270	struct fc_exch *exch = fc_seq_exch(seq);
 271	struct fc_lport *lport = exch->lp;
 272	struct qedf_ctx *qedf = lport_priv(lport);
 273
 274	if (!qedf) {
 275		QEDF_ERR(NULL, "qedf is NULL.\n");
 276		return;
 277	}
 278
 279	/*
 280	 * If ERR_PTR is set then don't try to stat anything as it will cause
 281	 * a crash when we access fp.
 282	 */
 283	if (IS_ERR(fp)) {
 284		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 285		    "fp has IS_ERR() set.\n");
 286		goto skip_stat;
 287	}
 288
 289	/* Log stats for FLOGI reject */
 290	if (fc_frame_payload_op(fp) == ELS_LS_RJT)
 291		qedf->flogi_failed++;
 292	else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
 293		/* Set the source MAC we will use for FCoE traffic */
 294		qedf_set_data_src_addr(qedf, fp);
 295		qedf->flogi_pending = 0;
 296	}
 297
 298	/* Complete flogi_compl so we can proceed to sending ADISCs */
 299	complete(&qedf->flogi_compl);
 300
 301skip_stat:
 302	/* Report response to libfc */
 303	fc_lport_flogi_resp(seq, fp, lport);
 304}
 305
 306static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
 307	struct fc_frame *fp, unsigned int op,
 308	void (*resp)(struct fc_seq *,
 309	struct fc_frame *,
 310	void *),
 311	void *arg, u32 timeout)
 312{
 313	struct qedf_ctx *qedf = lport_priv(lport);
 314
 315	/*
 316	 * Intercept FLOGI for statistic purposes. Note we use the resp
 317	 * callback to tell if this is really a flogi.
 318	 */
 319	if (resp == fc_lport_flogi_resp) {
 320		qedf->flogi_cnt++;
 321		qedf->flogi_pending++;
 322
 323		if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 324			QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n");
 325			qedf->flogi_pending = 0;
 326		}
 327
 328		if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) {
 329			schedule_delayed_work(&qedf->stag_work, 2);
 330			return NULL;
 331		}
 332
 333		return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
 334		    arg, timeout);
 335	}
 336
 337	return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
 338}
 339
 340int qedf_send_flogi(struct qedf_ctx *qedf)
 341{
 342	struct fc_lport *lport;
 343	struct fc_frame *fp;
 344
 345	lport = qedf->lport;
 346
 347	if (!lport->tt.elsct_send) {
 348		QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");
 349		return -EINVAL;
 350	}
 351
 352	fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
 353	if (!fp) {
 354		QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
 355		return -ENOMEM;
 356	}
 357
 358	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
 359	    "Sending FLOGI to reestablish session with switch.\n");
 360	lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
 361	    ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
 362
 363	init_completion(&qedf->flogi_compl);
 364
 365	return 0;
 366}
 367
 368/*
 369 * This function is called if link_down_tmo is in use.  If we get a link up and
 370 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
 371 * sessions with targets.  Otherwise, just call fcoe_ctlr_link_up().
 372 */
 373static void qedf_link_recovery(struct work_struct *work)
 374{
 375	struct qedf_ctx *qedf =
 376	    container_of(work, struct qedf_ctx, link_recovery.work);
 377	struct fc_lport *lport = qedf->lport;
 378	struct fc_rport_priv *rdata;
 379	bool rc;
 380	int retries = 30;
 381	int rval, i;
 382	struct list_head rdata_login_list;
 383
 384	INIT_LIST_HEAD(&rdata_login_list);
 385
 386	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 387	    "Link down tmo did not expire.\n");
 388
 389	/*
 390	 * Essentially reset the fcoe_ctlr here without affecting the state
 391	 * of the libfc structs.
 392	 */
 393	qedf->ctlr.state = FIP_ST_LINK_WAIT;
 394	fcoe_ctlr_link_down(&qedf->ctlr);
 395
 396	/*
 397	 * Bring the link up before we send the fipvlan request so libfcoe
 398	 * can select a new fcf in parallel
 399	 */
 400	fcoe_ctlr_link_up(&qedf->ctlr);
 401
 402	/* Since the link when down and up to verify which vlan we're on */
 403	qedf->fipvlan_retries = qedf_fipvlan_retries;
 404	rc = qedf_initiate_fipvlan_req(qedf);
 405	/* If getting the VLAN fails, set the VLAN to the fallback one */
 406	if (!rc)
 407		qedf_set_vlan_id(qedf, qedf_fallback_vlan);
 408
 409	/*
 410	 * We need to wait for an FCF to be selected due to the
 411	 * fcoe_ctlr_link_up other the FLOGI will be rejected.
 412	 */
 413	while (retries > 0) {
 414		if (qedf->ctlr.sel_fcf) {
 415			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 416			    "FCF reselected, proceeding with FLOGI.\n");
 417			break;
 418		}
 419		msleep(500);
 420		retries--;
 421	}
 422
 423	if (retries < 1) {
 424		QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
 425		    "FCF selection.\n");
 426		return;
 427	}
 428
 429	rval = qedf_send_flogi(qedf);
 430	if (rval)
 431		return;
 432
 433	/* Wait for FLOGI completion before proceeding with sending ADISCs */
 434	i = wait_for_completion_timeout(&qedf->flogi_compl,
 435	    qedf->lport->r_a_tov);
 436	if (i == 0) {
 437		QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
 438		return;
 439	}
 440
 441	/*
 442	 * Call lport->tt.rport_login which will cause libfc to send an
 443	 * ADISC since the rport is in state ready.
 444	 */
 445	mutex_lock(&lport->disc.disc_mutex);
 446	list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
 447		if (kref_get_unless_zero(&rdata->kref)) {
 448			fc_rport_login(rdata);
 449			kref_put(&rdata->kref, fc_rport_destroy);
 450		}
 451	}
 452	mutex_unlock(&lport->disc.disc_mutex);
 453}
 454
 455static void qedf_update_link_speed(struct qedf_ctx *qedf,
 456	struct qed_link_output *link)
 457{
 458	__ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps);
 459	struct fc_lport *lport = qedf->lport;
 460
 461	lport->link_speed = FC_PORTSPEED_UNKNOWN;
 462	lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
 463
 464	/* Set fc_host link speed */
 465	switch (link->speed) {
 466	case 10000:
 467		lport->link_speed = FC_PORTSPEED_10GBIT;
 468		break;
 469	case 25000:
 470		lport->link_speed = FC_PORTSPEED_25GBIT;
 471		break;
 472	case 40000:
 473		lport->link_speed = FC_PORTSPEED_40GBIT;
 474		break;
 475	case 50000:
 476		lport->link_speed = FC_PORTSPEED_50GBIT;
 477		break;
 478	case 100000:
 479		lport->link_speed = FC_PORTSPEED_100GBIT;
 480		break;
 481	case 20000:
 482		lport->link_speed = FC_PORTSPEED_20GBIT;
 483		break;
 484	default:
 485		lport->link_speed = FC_PORTSPEED_UNKNOWN;
 486		break;
 487	}
 488
 489	/*
 490	 * Set supported link speed by querying the supported
 491	 * capabilities of the link.
 492	 */
 493
 494	phylink_zero(sup_caps);
 495	phylink_set(sup_caps, 10000baseT_Full);
 496	phylink_set(sup_caps, 10000baseKX4_Full);
 497	phylink_set(sup_caps, 10000baseR_FEC);
 498	phylink_set(sup_caps, 10000baseCR_Full);
 499	phylink_set(sup_caps, 10000baseSR_Full);
 500	phylink_set(sup_caps, 10000baseLR_Full);
 501	phylink_set(sup_caps, 10000baseLRM_Full);
 502	phylink_set(sup_caps, 10000baseKR_Full);
 503
 504	if (linkmode_intersects(link->supported_caps, sup_caps))
 505		lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
 506
 507	phylink_zero(sup_caps);
 508	phylink_set(sup_caps, 25000baseKR_Full);
 509	phylink_set(sup_caps, 25000baseCR_Full);
 510	phylink_set(sup_caps, 25000baseSR_Full);
 511
 512	if (linkmode_intersects(link->supported_caps, sup_caps))
 513		lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
 514
 515	phylink_zero(sup_caps);
 516	phylink_set(sup_caps, 40000baseLR4_Full);
 517	phylink_set(sup_caps, 40000baseKR4_Full);
 518	phylink_set(sup_caps, 40000baseCR4_Full);
 519	phylink_set(sup_caps, 40000baseSR4_Full);
 520
 521	if (linkmode_intersects(link->supported_caps, sup_caps))
 522		lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
 523
 524	phylink_zero(sup_caps);
 525	phylink_set(sup_caps, 50000baseKR2_Full);
 526	phylink_set(sup_caps, 50000baseCR2_Full);
 527	phylink_set(sup_caps, 50000baseSR2_Full);
 528
 529	if (linkmode_intersects(link->supported_caps, sup_caps))
 530		lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
 531
 532	phylink_zero(sup_caps);
 533	phylink_set(sup_caps, 100000baseKR4_Full);
 534	phylink_set(sup_caps, 100000baseSR4_Full);
 535	phylink_set(sup_caps, 100000baseCR4_Full);
 536	phylink_set(sup_caps, 100000baseLR4_ER4_Full);
 537
 538	if (linkmode_intersects(link->supported_caps, sup_caps))
 539		lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
 540
 541	phylink_zero(sup_caps);
 542	phylink_set(sup_caps, 20000baseKR2_Full);
 543
 544	if (linkmode_intersects(link->supported_caps, sup_caps))
 545		lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
 546
 547	if (lport->host && lport->host->shost_data)
 548		fc_host_supported_speeds(lport->host) =
 549			lport->link_supported_speeds;
 550}
 551
 552static void qedf_bw_update(void *dev)
 553{
 554	struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 555	struct qed_link_output link;
 556
 557	/* Get the latest status of the link */
 558	qed_ops->common->get_link(qedf->cdev, &link);
 559
 560	if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 561		QEDF_ERR(&qedf->dbg_ctx,
 562			 "Ignore link update, driver getting unload.\n");
 563		return;
 564	}
 565
 566	if (link.link_up) {
 567		if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
 568			qedf_update_link_speed(qedf, &link);
 569		else
 570			QEDF_ERR(&qedf->dbg_ctx,
 571				 "Ignore bw update, link is down.\n");
 572
 573	} else {
 574		QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n");
 575	}
 576}
 577
 578static void qedf_link_update(void *dev, struct qed_link_output *link)
 579{
 580	struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 581
 582	/*
 583	 * Prevent race where we're removing the module and we get link update
 584	 * for qed.
 585	 */
 586	if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
 587		QEDF_ERR(&qedf->dbg_ctx,
 588			 "Ignore link update, driver getting unload.\n");
 589		return;
 590	}
 591
 592	if (link->link_up) {
 593		if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
 594			QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
 595			    "Ignoring link up event as link is already up.\n");
 596			return;
 597		}
 598		QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
 599		    link->speed / 1000);
 600
 601		/* Cancel any pending link down work */
 602		cancel_delayed_work(&qedf->link_update);
 603
 604		atomic_set(&qedf->link_state, QEDF_LINK_UP);
 605		qedf_update_link_speed(qedf, link);
 606
 607		if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
 608		    qedf_dcbx_no_wait) {
 609			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 610			     "DCBx done.\n");
 611			if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 612				queue_delayed_work(qedf->link_update_wq,
 613				    &qedf->link_recovery, 0);
 614			else
 615				queue_delayed_work(qedf->link_update_wq,
 616				    &qedf->link_update, 0);
 617			atomic_set(&qedf->link_down_tmo_valid, 0);
 618		}
 619
 620	} else {
 621		QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
 622
 623		atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 624		atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
 625		/*
 626		 * Flag that we're waiting for the link to come back up before
 627		 * informing the fcoe layer of the event.
 628		 */
 629		if (qedf_link_down_tmo > 0) {
 630			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 631			    "Starting link down tmo.\n");
 632			atomic_set(&qedf->link_down_tmo_valid, 1);
 633		}
 634		qedf->vlan_id = 0;
 635		qedf_update_link_speed(qedf, link);
 636		queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 637		    qedf_link_down_tmo * HZ);
 638	}
 639}
 640
 641
 642static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
 643{
 644	struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
 645	u8 tmp_prio;
 646
 647	QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
 648	    "prio=%d.\n", get->operational.valid, get->operational.enabled,
 649	    get->operational.app_prio.fcoe);
 650
 651	if (get->operational.enabled && get->operational.valid) {
 652		/* If DCBX was already negotiated on link up then just exit */
 653		if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
 654			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 655			    "DCBX already set on link up.\n");
 656			return;
 657		}
 658
 659		atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
 660
 661		/*
 662		 * Set the 8021q priority in the following manner:
 663		 *
 664		 * 1. If a modparam is set use that
 665		 * 2. If the value is not between 0..7 use the default
 666		 * 3. Use the priority we get from the DCBX app tag
 667		 */
 668		tmp_prio = get->operational.app_prio.fcoe;
 669		if (qedf_default_prio > -1)
 670			qedf->prio = qedf_default_prio;
 671		else if (tmp_prio > 7) {
 672			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
 673			    "FIP/FCoE prio %d out of range, setting to %d.\n",
 674			    tmp_prio, QEDF_DEFAULT_PRIO);
 675			qedf->prio = QEDF_DEFAULT_PRIO;
 676		} else
 677			qedf->prio = tmp_prio;
 678
 679		if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
 680		    !qedf_dcbx_no_wait) {
 681			if (atomic_read(&qedf->link_down_tmo_valid) > 0)
 682				queue_delayed_work(qedf->link_update_wq,
 683				    &qedf->link_recovery, 0);
 684			else
 685				queue_delayed_work(qedf->link_update_wq,
 686				    &qedf->link_update, 0);
 687			atomic_set(&qedf->link_down_tmo_valid, 0);
 688		}
 689	}
 690
 691}
 692
 693static u32 qedf_get_login_failures(void *cookie)
 694{
 695	struct qedf_ctx *qedf;
 696
 697	qedf = (struct qedf_ctx *)cookie;
 698	return qedf->flogi_failed;
 699}
 700
 701static struct qed_fcoe_cb_ops qedf_cb_ops = {
 702	.common = {
 703		.link_update = qedf_link_update,
 704		.bw_update = qedf_bw_update,
 705		.schedule_recovery_handler = qedf_schedule_recovery_handler,
 706		.dcbx_aen = qedf_dcbx_handler,
 707		.get_generic_tlv_data = qedf_get_generic_tlv_data,
 708		.get_protocol_tlv_data = qedf_get_protocol_tlv_data,
 709		.schedule_hw_err_handler = qedf_schedule_hw_err_handler,
 710	}
 711};
 712
 713/*
 714 * Various transport templates.
 715 */
 716
 717static struct scsi_transport_template *qedf_fc_transport_template;
 718static struct scsi_transport_template *qedf_fc_vport_transport_template;
 719
 720/*
 721 * SCSI EH handlers
 722 */
 723static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
 724{
 725	struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 726	struct fc_lport *lport;
 727	struct qedf_ctx *qedf;
 728	struct qedf_ioreq *io_req;
 729	struct fc_rport_libfc_priv *rp = rport->dd_data;
 730	struct fc_rport_priv *rdata;
 731	struct qedf_rport *fcport = NULL;
 732	int rc = FAILED;
 733	int wait_count = 100;
 734	int refcount = 0;
 735	int rval;
 736	int got_ref = 0;
 737
 738	lport = shost_priv(sc_cmd->device->host);
 739	qedf = (struct qedf_ctx *)lport_priv(lport);
 740
 741	/* rport and tgt are allocated together, so tgt should be non-NULL */
 742	fcport = (struct qedf_rport *)&rp[1];
 743	rdata = fcport->rdata;
 744	if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
 745		QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
 746		rc = SUCCESS;
 747		goto out;
 748	}
 749
 750
 751	io_req = qedf_priv(sc_cmd)->io_req;
 752	if (!io_req) {
 753		QEDF_ERR(&qedf->dbg_ctx,
 754			 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
 755			 sc_cmd, sc_cmd->cmnd[0],
 756			 rdata->ids.port_id);
 757		rc = SUCCESS;
 758		goto drop_rdata_kref;
 759	}
 760
 761	rval = kref_get_unless_zero(&io_req->refcount);	/* ID: 005 */
 762	if (rval)
 763		got_ref = 1;
 764
 765	/* If we got a valid io_req, confirm it belongs to this sc_cmd. */
 766	if (!rval || io_req->sc_cmd != sc_cmd) {
 767		QEDF_ERR(&qedf->dbg_ctx,
 768			 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
 769			 io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
 770
 771		goto drop_rdata_kref;
 772	}
 773
 774	if (fc_remote_port_chkready(rport)) {
 775		refcount = kref_read(&io_req->refcount);
 776		QEDF_ERR(&qedf->dbg_ctx,
 777			 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
 778			 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
 779			 refcount, rdata->ids.port_id);
 780
 781		goto drop_rdata_kref;
 782	}
 783
 784	rc = fc_block_rport(rport);
 785	if (rc)
 786		goto drop_rdata_kref;
 787
 788	if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
 789		QEDF_ERR(&qedf->dbg_ctx,
 790			 "Connection uploading, xid=0x%x., port_id=%06x\n",
 791			 io_req->xid, rdata->ids.port_id);
 792		while (io_req->sc_cmd && (wait_count != 0)) {
 793			msleep(100);
 794			wait_count--;
 795		}
 796		if (wait_count) {
 797			QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
 798			rc = SUCCESS;
 799		} else {
 800			QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
 801			rc = FAILED;
 802		}
 803		goto drop_rdata_kref;
 804	}
 805
 806	if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
 807		QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
 808		goto drop_rdata_kref;
 809	}
 810
 811	QEDF_ERR(&qedf->dbg_ctx,
 812		 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
 813		 io_req, sc_cmd, io_req->xid, io_req->fp_idx,
 814		 rdata->ids.port_id);
 815
 816	if (qedf->stop_io_on_error) {
 817		qedf_stop_all_io(qedf);
 818		rc = SUCCESS;
 819		goto drop_rdata_kref;
 820	}
 821
 822	init_completion(&io_req->abts_done);
 823	rval = qedf_initiate_abts(io_req, true);
 824	if (rval) {
 825		QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
 826		/*
 827		 * If we fail to queue the ABTS then return this command to
 828		 * the SCSI layer as it will own and free the xid
 829		 */
 830		rc = SUCCESS;
 831		qedf_scsi_done(qedf, io_req, DID_ERROR);
 832		goto drop_rdata_kref;
 833	}
 834
 835	wait_for_completion(&io_req->abts_done);
 836
 837	if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
 838	    io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
 839	    io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
 840		/*
 841		 * If we get a reponse to the abort this is success from
 842		 * the perspective that all references to the command have
 843		 * been removed from the driver and firmware
 844		 */
 845		rc = SUCCESS;
 846	} else {
 847		/* If the abort and cleanup failed then return a failure */
 848		rc = FAILED;
 849	}
 850
 851	if (rc == SUCCESS)
 852		QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
 853			  io_req->xid);
 854	else
 855		QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
 856			  io_req->xid);
 857
 858drop_rdata_kref:
 859	kref_put(&rdata->kref, fc_rport_destroy);
 860out:
 861	if (got_ref)
 862		kref_put(&io_req->refcount, qedf_release_cmd);
 863	return rc;
 864}
 865
 866static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
 867{
 868	struct scsi_target *starget = scsi_target(sc_cmd->device);
 869	struct fc_rport *rport = starget_to_rport(starget);
 870
 871	QEDF_ERR(NULL, "TARGET RESET Issued...");
 872	return qedf_initiate_tmf(rport, 0, FCP_TMF_TGT_RESET);
 873}
 874
 875static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
 876{
 877	struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
 878
 879	QEDF_ERR(NULL, "LUN RESET Issued...\n");
 880	return qedf_initiate_tmf(rport, sc_cmd->device->lun, FCP_TMF_LUN_RESET);
 881}
 882
 883bool qedf_wait_for_upload(struct qedf_ctx *qedf)
 884{
 885	struct qedf_rport *fcport;
 886	int wait_cnt = 120;
 887
 888	while (wait_cnt--) {
 889		if (atomic_read(&qedf->num_offloads))
 890			QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 891				  "Waiting for all uploads to complete num_offloads = 0x%x.\n",
 892				  atomic_read(&qedf->num_offloads));
 893		else
 894			return true;
 895		msleep(500);
 896	}
 897
 898	rcu_read_lock();
 899	list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
 900		if (test_bit(QEDF_RPORT_SESSION_READY,
 901				       &fcport->flags)) {
 902			if (fcport->rdata)
 903				QEDF_ERR(&qedf->dbg_ctx,
 904					 "Waiting for fcport %p portid=%06x.\n",
 905					 fcport, fcport->rdata->ids.port_id);
 906			} else {
 907				QEDF_ERR(&qedf->dbg_ctx,
 908					 "Waiting for fcport %p.\n", fcport);
 909			}
 910	}
 911
 912	rcu_read_unlock();
 913	return false;
 914}
 915
 916/* Performs soft reset of qedf_ctx by simulating a link down/up */
 917void qedf_ctx_soft_reset(struct fc_lport *lport)
 918{
 919	struct qedf_ctx *qedf;
 920	struct qed_link_output if_link;
 921
 922	qedf = lport_priv(lport);
 923
 924	if (lport->vport) {
 925		clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
 926		printk_ratelimited("Cannot issue host reset on NPIV port.\n");
 927		return;
 928	}
 929
 930	qedf->flogi_pending = 0;
 931	/* For host reset, essentially do a soft link up/down */
 932	atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
 933	QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 934		  "Queuing link down work.\n");
 935	queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 936	    0);
 937
 938	if (qedf_wait_for_upload(qedf) == false) {
 939		QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
 940		WARN_ON(atomic_read(&qedf->num_offloads));
 941	}
 942
 943	/* Before setting link up query physical link state */
 944	qed_ops->common->get_link(qedf->cdev, &if_link);
 945	/* Bail if the physical link is not up */
 946	if (!if_link.link_up) {
 947		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 948			  "Physical link is not up.\n");
 949		clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
 950		return;
 951	}
 952	/* Flush and wait to make sure link down is processed */
 953	flush_delayed_work(&qedf->link_update);
 954	msleep(500);
 955
 956	atomic_set(&qedf->link_state, QEDF_LINK_UP);
 957	qedf->vlan_id  = 0;
 958	QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
 959		  "Queue link up work.\n");
 960	queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
 961	    0);
 962	clear_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
 963}
 964
 965/* Reset the host by gracefully logging out and then logging back in */
 966static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
 967{
 968	struct fc_lport *lport;
 969	struct qedf_ctx *qedf;
 970
 971	lport = shost_priv(sc_cmd->device->host);
 972	qedf = lport_priv(lport);
 973
 974	if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
 975	    test_bit(QEDF_UNLOADING, &qedf->flags))
 976		return FAILED;
 977
 978	QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
 979
 980	qedf_ctx_soft_reset(lport);
 981
 982	return SUCCESS;
 983}
 984
 985static int qedf_sdev_configure(struct scsi_device *sdev,
 986			       struct queue_limits *lim)
 987{
 988	if (qedf_queue_depth) {
 989		scsi_change_queue_depth(sdev, qedf_queue_depth);
 990	}
 991
 992	return 0;
 993}
 994
 995static const struct scsi_host_template qedf_host_template = {
 996	.module 	= THIS_MODULE,
 997	.name 		= QEDF_MODULE_NAME,
 998	.this_id 	= -1,
 999	.cmd_per_lun	= 32,
1000	.max_sectors 	= 0xffff,
1001	.queuecommand 	= qedf_queuecommand,
1002	.shost_groups	= qedf_host_groups,
1003	.eh_abort_handler	= qedf_eh_abort,
1004	.eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
1005	.eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
1006	.eh_host_reset_handler  = qedf_eh_host_reset,
1007	.sdev_configure	= qedf_sdev_configure,
1008	.dma_boundary = QED_HW_DMA_BOUNDARY,
1009	.sg_tablesize = QEDF_MAX_BDS_PER_CMD,
1010	.can_queue = FCOE_PARAMS_NUM_TASKS,
1011	.change_queue_depth = scsi_change_queue_depth,
1012	.cmd_size = sizeof(struct qedf_cmd_priv),
1013};
1014
1015static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
1016{
1017	int rc;
1018
1019	spin_lock(&qedf_global_lock);
1020	rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
1021	spin_unlock(&qedf_global_lock);
1022
1023	return rc;
1024}
1025
1026static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
1027{
1028	struct qedf_rport *fcport;
1029	struct fc_rport_priv *rdata;
1030
1031	rcu_read_lock();
1032	list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
1033		rdata = fcport->rdata;
1034		if (rdata == NULL)
1035			continue;
1036		if (rdata->ids.port_id == port_id) {
1037			rcu_read_unlock();
1038			return fcport;
1039		}
1040	}
1041	rcu_read_unlock();
1042
1043	/* Return NULL to caller to let them know fcport was not found */
1044	return NULL;
1045}
1046
1047/* Transmits an ELS frame over an offloaded session */
1048static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
1049{
1050	struct fc_frame_header *fh;
1051	int rc = 0;
1052
1053	fh = fc_frame_header_get(fp);
1054	if ((fh->fh_type == FC_TYPE_ELS) &&
1055	    (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1056		switch (fc_frame_payload_op(fp)) {
1057		case ELS_ADISC:
1058			qedf_send_adisc(fcport, fp);
1059			rc = 1;
1060			break;
1061		}
1062	}
1063
1064	return rc;
1065}
1066
1067/*
1068 * qedf_xmit - qedf FCoE frame transmit function
1069 */
1070static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
1071{
1072	struct fc_lport		*base_lport;
1073	struct qedf_ctx		*qedf;
1074	struct ethhdr		*eh;
1075	struct fcoe_crc_eof	*cp;
1076	struct sk_buff		*skb;
1077	struct fc_frame_header	*fh;
1078	struct fcoe_hdr		*hp;
1079	u8			sof, eof;
1080	u32			crc;
1081	unsigned int		hlen, tlen, elen;
1082	int			wlen;
1083	struct fc_lport *tmp_lport;
1084	struct fc_lport *vn_port = NULL;
1085	struct qedf_rport *fcport;
1086	int rc;
1087	u16 vlan_tci = 0;
1088
1089	qedf = (struct qedf_ctx *)lport_priv(lport);
1090
1091	fh = fc_frame_header_get(fp);
1092	skb = fp_skb(fp);
1093
1094	/* Filter out traffic to other NPIV ports on the same host */
1095	if (lport->vport)
1096		base_lport = shost_priv(vport_to_shost(lport->vport));
1097	else
1098		base_lport = lport;
1099
1100	/* Flag if the destination is the base port */
1101	if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
1102		vn_port = base_lport;
1103	} else {
1104		/* Got through the list of vports attached to the base_lport
1105		 * and see if we have a match with the destination address.
1106		 */
1107		list_for_each_entry(tmp_lport, &base_lport->vports, list) {
1108			if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
1109				vn_port = tmp_lport;
1110				break;
1111			}
1112		}
1113	}
1114	if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
1115		struct fc_rport_priv *rdata = NULL;
1116
1117		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
1118		    "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
1119		kfree_skb(skb);
1120		rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
1121		if (rdata) {
1122			rdata->retries = lport->max_rport_retry_count;
1123			kref_put(&rdata->kref, fc_rport_destroy);
1124		}
1125		return -EINVAL;
1126	}
1127	/* End NPIV filtering */
1128
1129	if (!qedf->ctlr.sel_fcf) {
1130		kfree_skb(skb);
1131		return 0;
1132	}
1133
1134	if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
1135		QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
1136		kfree_skb(skb);
1137		return 0;
1138	}
1139
1140	if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
1141		QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
1142		kfree_skb(skb);
1143		return 0;
1144	}
1145
1146	if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1147		if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
1148			return 0;
1149	}
1150
1151	/* Check to see if this needs to be sent on an offloaded session */
1152	fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
1153
1154	if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1155		rc = qedf_xmit_l2_frame(fcport, fp);
1156		/*
1157		 * If the frame was successfully sent over the middle path
1158		 * then do not try to also send it over the LL2 path
1159		 */
1160		if (rc)
1161			return 0;
1162	}
1163
1164	sof = fr_sof(fp);
1165	eof = fr_eof(fp);
1166
1167	elen = sizeof(struct ethhdr);
1168	hlen = sizeof(struct fcoe_hdr);
1169	tlen = sizeof(struct fcoe_crc_eof);
1170	wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
1171
1172	skb->ip_summed = CHECKSUM_NONE;
1173	crc = fcoe_fc_crc(fp);
1174
1175	/* copy port crc and eof to the skb buff */
1176	if (skb_is_nonlinear(skb)) {
1177		skb_frag_t *frag;
1178
1179		if (qedf_get_paged_crc_eof(skb, tlen)) {
1180			kfree_skb(skb);
1181			return -ENOMEM;
1182		}
1183		frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
1184		cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
1185	} else {
1186		cp = skb_put(skb, tlen);
1187	}
1188
1189	memset(cp, 0, sizeof(*cp));
1190	cp->fcoe_eof = eof;
1191	cp->fcoe_crc32 = cpu_to_le32(~crc);
1192	if (skb_is_nonlinear(skb)) {
1193		kunmap_atomic(cp);
1194		cp = NULL;
1195	}
1196
1197
1198	/* adjust skb network/transport offsets to match mac/fcoe/port */
1199	skb_push(skb, elen + hlen);
1200	skb_reset_mac_header(skb);
1201	skb_reset_network_header(skb);
1202	skb->mac_len = elen;
1203	skb->protocol = htons(ETH_P_FCOE);
1204
1205	/*
1206	 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
1207	 * for FIP/FCoE traffic.
1208	 */
1209	__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
1210
1211	/* fill up mac and fcoe headers */
1212	eh = eth_hdr(skb);
1213	eh->h_proto = htons(ETH_P_FCOE);
1214	if (qedf->ctlr.map_dest)
1215		fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1216	else
1217		/* insert GW address */
1218		ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1219
1220	/* Set the source MAC address */
1221	ether_addr_copy(eh->h_source, qedf->data_src_addr);
1222
1223	hp = (struct fcoe_hdr *)(eh + 1);
1224	memset(hp, 0, sizeof(*hp));
1225	if (FC_FCOE_VER)
1226		FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1227	hp->fcoe_sof = sof;
1228
1229	/*update tx stats */
1230	this_cpu_inc(lport->stats->TxFrames);
1231	this_cpu_add(lport->stats->TxWords, wlen);
1232
1233	/* Get VLAN ID from skb for printing purposes */
1234	__vlan_hwaccel_get_tag(skb, &vlan_tci);
1235
1236	/* send down to lld */
1237	fr_dev(fp) = lport;
1238	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1239	    "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1240	    ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1241	    vlan_tci);
1242	if (qedf_dump_frames)
1243		print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1244		    1, skb->data, skb->len, false);
1245	rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1246	if (rc) {
1247		QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1248		kfree_skb(skb);
1249		return rc;
1250	}
1251
1252	return 0;
1253}
1254
1255static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1256{
1257	int rval = 0;
1258	u32 *pbl;
1259	dma_addr_t page;
1260	int num_pages;
1261
1262	/* Calculate appropriate queue and PBL sizes */
1263	fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1264	fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1265	fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1266	    sizeof(void *);
1267	fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1268
1269	fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1270					&fcport->sq_dma, GFP_KERNEL);
1271	if (!fcport->sq) {
1272		QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1273		rval = 1;
1274		goto out;
1275	}
1276
1277	fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1278					    fcport->sq_pbl_size,
1279					    &fcport->sq_pbl_dma, GFP_KERNEL);
1280	if (!fcport->sq_pbl) {
1281		QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1282		rval = 1;
1283		goto out_free_sq;
1284	}
1285
1286	/* Create PBL */
1287	num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1288	page = fcport->sq_dma;
1289	pbl = (u32 *)fcport->sq_pbl;
1290
1291	while (num_pages--) {
1292		*pbl = U64_LO(page);
1293		pbl++;
1294		*pbl = U64_HI(page);
1295		pbl++;
1296		page += QEDF_PAGE_SIZE;
1297	}
1298
1299	return rval;
1300
1301out_free_sq:
1302	dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1303	    fcport->sq_dma);
1304out:
1305	return rval;
1306}
1307
1308static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1309{
1310	if (fcport->sq_pbl)
1311		dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1312		    fcport->sq_pbl, fcport->sq_pbl_dma);
1313	if (fcport->sq)
1314		dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1315		    fcport->sq, fcport->sq_dma);
1316}
1317
1318static int qedf_offload_connection(struct qedf_ctx *qedf,
1319	struct qedf_rport *fcport)
1320{
1321	struct qed_fcoe_params_offload conn_info;
1322	u32 port_id;
1323	int rval;
1324	uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1325
1326	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1327		   "portid=%06x.\n", fcport->rdata->ids.port_id);
1328	rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1329	    &fcport->fw_cid, &fcport->p_doorbell);
1330	if (rval) {
1331		QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1332			   "for portid=%06x.\n", fcport->rdata->ids.port_id);
1333		rval = 1; /* For some reason qed returns 0 on failure here */
1334		goto out;
1335	}
1336
1337	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1338		   "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1339		   fcport->fw_cid, fcport->handle);
1340
1341	memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1342
1343	/* Fill in the offload connection info */
1344	conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1345
1346	conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1347	conn_info.sq_next_page_addr =
1348	    (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1349
1350	/* Need to use our FCoE MAC for the offload session */
1351	ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1352
1353	ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1354
1355	conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1356	conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
1357	conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1358	conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1359
1360	/* Set VLAN data */
1361	conn_info.vlan_tag = qedf->vlan_id <<
1362	    FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1363	conn_info.vlan_tag |=
1364	    qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1365	conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1366	    FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1367
1368	/* Set host port source id */
1369	port_id = fc_host_port_id(qedf->lport->host);
1370	fcport->sid = port_id;
1371	conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1372	conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1373	conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1374
1375	conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1376
1377	/* Set remote port destination id */
1378	port_id = fcport->rdata->rport->port_id;
1379	conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1380	conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1381	conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1382
1383	conn_info.def_q_idx = 0; /* Default index for send queue? */
1384
1385	/* Set FC-TAPE specific flags if needed */
1386	if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1387		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1388		    "Enable CONF, REC for portid=%06x.\n",
1389		    fcport->rdata->ids.port_id);
1390		conn_info.flags |= 1 <<
1391		    FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1392		conn_info.flags |=
1393		    ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1394		    FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1395	}
1396
1397	rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1398	if (rval) {
1399		QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1400			   "for portid=%06x.\n", fcport->rdata->ids.port_id);
1401		goto out_free_conn;
1402	} else
1403		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1404			   "succeeded portid=%06x total_sqe=%d.\n",
1405			   fcport->rdata->ids.port_id, total_sqe);
1406
1407	spin_lock_init(&fcport->rport_lock);
1408	atomic_set(&fcport->free_sqes, total_sqe);
1409	return 0;
1410out_free_conn:
1411	qed_ops->release_conn(qedf->cdev, fcport->handle);
1412out:
1413	return rval;
1414}
1415
1416#define QEDF_TERM_BUFF_SIZE		10
1417static void qedf_upload_connection(struct qedf_ctx *qedf,
1418	struct qedf_rport *fcport)
1419{
1420	void *term_params;
1421	dma_addr_t term_params_dma;
1422
1423	/* Term params needs to be a DMA coherent buffer as qed shared the
1424	 * physical DMA address with the firmware. The buffer may be used in
1425	 * the receive path so we may eventually have to move this.
1426	 */
1427	term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1428		&term_params_dma, GFP_KERNEL);
1429	if (!term_params)
1430		return;
1431
1432	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1433		   "port_id=%06x.\n", fcport->rdata->ids.port_id);
1434
1435	qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1436	qed_ops->release_conn(qedf->cdev, fcport->handle);
1437
1438	dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1439	    term_params_dma);
1440}
1441
1442static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1443	struct qedf_rport *fcport)
1444{
1445	struct fc_rport_priv *rdata = fcport->rdata;
1446
1447	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1448	    fcport->rdata->ids.port_id);
1449
1450	/* Flush any remaining i/o's before we upload the connection */
1451	qedf_flush_active_ios(fcport, -1);
1452
1453	if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1454		qedf_upload_connection(qedf, fcport);
1455	qedf_free_sq(qedf, fcport);
1456	fcport->rdata = NULL;
1457	fcport->qedf = NULL;
1458	kref_put(&rdata->kref, fc_rport_destroy);
1459}
1460
1461/*
1462 * This event_callback is called after successful completion of libfc
1463 * initiated target login. qedf can proceed with initiating the session
1464 * establishment.
1465 */
1466static void qedf_rport_event_handler(struct fc_lport *lport,
1467				struct fc_rport_priv *rdata,
1468				enum fc_rport_event event)
1469{
1470	struct qedf_ctx *qedf = lport_priv(lport);
1471	struct fc_rport *rport = rdata->rport;
1472	struct fc_rport_libfc_priv *rp;
1473	struct qedf_rport *fcport;
1474	u32 port_id;
1475	int rval;
1476	unsigned long flags;
1477
1478	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1479		   "port_id = 0x%x\n", event, rdata->ids.port_id);
1480
1481	switch (event) {
1482	case RPORT_EV_READY:
1483		if (!rport) {
1484			QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1485			break;
1486		}
1487
1488		rp = rport->dd_data;
1489		fcport = (struct qedf_rport *)&rp[1];
1490		fcport->qedf = qedf;
1491
1492		if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1493			QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1494			    "portid=0x%x as max number of offloaded sessions "
1495			    "reached.\n", rdata->ids.port_id);
1496			return;
1497		}
1498
1499		/*
1500		 * Don't try to offload the session again. Can happen when we
1501		 * get an ADISC
1502		 */
1503		if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1504			QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1505				   "offloaded, portid=0x%x.\n",
1506				   rdata->ids.port_id);
1507			return;
1508		}
1509
1510		if (rport->port_id == FC_FID_DIR_SERV) {
1511			/*
1512			 * qedf_rport structure doesn't exist for
1513			 * directory server.
1514			 * We should not come here, as lport will
1515			 * take care of fabric login
1516			 */
1517			QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1518			    "exist for dir server port_id=%x\n",
1519			    rdata->ids.port_id);
1520			break;
1521		}
1522
1523		if (rdata->spp_type != FC_TYPE_FCP) {
1524			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1525			    "Not offloading since spp type isn't FCP\n");
1526			break;
1527		}
1528		if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1529			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1530			    "Not FCP target so not offloading\n");
1531			break;
1532		}
1533
1534		/* Initial reference held on entry, so this can't fail */
1535		kref_get(&rdata->kref);
1536		fcport->rdata = rdata;
1537		fcport->rport = rport;
1538
1539		rval = qedf_alloc_sq(qedf, fcport);
1540		if (rval) {
1541			qedf_cleanup_fcport(qedf, fcport);
1542			break;
1543		}
1544
1545		/* Set device type */
1546		if (rdata->flags & FC_RP_FLAGS_RETRY &&
1547		    rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1548		    !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1549			fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1550			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1551			    "portid=%06x is a TAPE device.\n",
1552			    rdata->ids.port_id);
1553		} else {
1554			fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1555		}
1556
1557		rval = qedf_offload_connection(qedf, fcport);
1558		if (rval) {
1559			qedf_cleanup_fcport(qedf, fcport);
1560			break;
1561		}
1562
1563		/* Add fcport to list of qedf_ctx list of offloaded ports */
1564		spin_lock_irqsave(&qedf->hba_lock, flags);
1565		list_add_rcu(&fcport->peers, &qedf->fcports);
1566		spin_unlock_irqrestore(&qedf->hba_lock, flags);
1567
1568		/*
1569		 * Set the session ready bit to let everyone know that this
1570		 * connection is ready for I/O
1571		 */
1572		set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1573		atomic_inc(&qedf->num_offloads);
1574
1575		break;
1576	case RPORT_EV_LOGO:
1577	case RPORT_EV_FAILED:
1578	case RPORT_EV_STOP:
1579		port_id = rdata->ids.port_id;
1580		if (port_id == FC_FID_DIR_SERV)
1581			break;
1582
1583		if (rdata->spp_type != FC_TYPE_FCP) {
1584			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1585			    "No action since spp type isn't FCP\n");
1586			break;
1587		}
1588		if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1589			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1590			    "Not FCP target so no action\n");
1591			break;
1592		}
1593
1594		if (!rport) {
1595			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1596			    "port_id=%x - rport notcreated Yet!!\n", port_id);
1597			break;
1598		}
1599		rp = rport->dd_data;
1600		/*
1601		 * Perform session upload. Note that rdata->peers is already
1602		 * removed from disc->rports list before we get this event.
1603		 */
1604		fcport = (struct qedf_rport *)&rp[1];
1605
1606		spin_lock_irqsave(&fcport->rport_lock, flags);
1607		/* Only free this fcport if it is offloaded already */
1608		if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
1609		    !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1610		    &fcport->flags)) {
1611			set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1612				&fcport->flags);
1613			spin_unlock_irqrestore(&fcport->rport_lock, flags);
1614			qedf_cleanup_fcport(qedf, fcport);
1615			/*
1616			 * Remove fcport to list of qedf_ctx list of offloaded
1617			 * ports
1618			 */
1619			spin_lock_irqsave(&qedf->hba_lock, flags);
1620			list_del_rcu(&fcport->peers);
1621			spin_unlock_irqrestore(&qedf->hba_lock, flags);
1622
1623			clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1624			    &fcport->flags);
1625			atomic_dec(&qedf->num_offloads);
1626		} else {
1627			spin_unlock_irqrestore(&fcport->rport_lock, flags);
1628		}
1629		break;
1630
1631	case RPORT_EV_NONE:
1632		break;
1633	}
1634}
1635
1636static void qedf_abort_io(struct fc_lport *lport)
1637{
1638	/* NO-OP but need to fill in the template */
1639}
1640
1641static void qedf_fcp_cleanup(struct fc_lport *lport)
1642{
1643	/*
1644	 * NO-OP but need to fill in template to prevent a NULL
1645	 * function pointer dereference during link down. I/Os
1646	 * will be flushed when port is uploaded.
1647	 */
1648}
1649
1650static struct libfc_function_template qedf_lport_template = {
1651	.frame_send		= qedf_xmit,
1652	.fcp_abort_io		= qedf_abort_io,
1653	.fcp_cleanup		= qedf_fcp_cleanup,
1654	.rport_event_callback	= qedf_rport_event_handler,
1655	.elsct_send		= qedf_elsct_send,
1656};
1657
1658static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1659{
1660	fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1661
1662	qedf->ctlr.send = qedf_fip_send;
1663	qedf->ctlr.get_src_addr = qedf_get_src_mac;
1664	ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1665}
1666
1667static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1668{
1669	struct fc_lport *lport = qedf->lport;
1670	u8 buf[8];
1671	int pos;
1672	uint32_t i;
1673
1674	/*
1675	 * fdmi_enabled needs to be set for libfc
1676	 * to execute FDMI registration
1677	 */
1678	lport->fdmi_enabled = 1;
1679
1680	/*
1681	 * Setup the necessary fc_host attributes to that will be used to fill
1682	 * in the FDMI information.
1683	 */
1684
1685	/* Get the PCI-e Device Serial Number Capability */
1686	pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1687	if (pos) {
1688		pos += 4;
1689		for (i = 0; i < 8; i++)
1690			pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1691
1692		snprintf(fc_host_serial_number(lport->host),
1693		    FC_SERIAL_NUMBER_SIZE,
1694		    "%02X%02X%02X%02X%02X%02X%02X%02X",
1695		    buf[7], buf[6], buf[5], buf[4],
1696		    buf[3], buf[2], buf[1], buf[0]);
1697	} else
1698		snprintf(fc_host_serial_number(lport->host),
1699		    FC_SERIAL_NUMBER_SIZE, "Unknown");
1700
1701	snprintf(fc_host_manufacturer(lport->host),
1702	    FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc.");
1703
1704	if (qedf->pdev->device == QL45xxx) {
1705		snprintf(fc_host_model(lport->host),
1706			FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx");
1707
1708		snprintf(fc_host_model_description(lport->host),
1709			FC_SYMBOLIC_NAME_SIZE, "%s",
1710			"Marvell FastLinQ QL45xxx FCoE Adapter");
1711	}
1712
1713	if (qedf->pdev->device == QL41xxx) {
1714		snprintf(fc_host_model(lport->host),
1715			FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx");
1716
1717		snprintf(fc_host_model_description(lport->host),
1718			FC_SYMBOLIC_NAME_SIZE, "%s",
1719			"Marvell FastLinQ QL41xxx FCoE Adapter");
1720	}
1721
1722	snprintf(fc_host_hardware_version(lport->host),
1723	    FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision);
1724
1725	snprintf(fc_host_driver_version(lport->host),
1726	    FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION);
1727
1728	snprintf(fc_host_firmware_version(lport->host),
1729	    FC_VERSION_STRING_SIZE, "%d.%d.%d.%d",
1730	    FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
1731	    FW_ENGINEERING_VERSION);
1732
1733	snprintf(fc_host_vendor_identifier(lport->host),
1734		FC_VENDOR_IDENTIFIER, "%s", "Marvell");
1735
1736}
1737
1738static int qedf_lport_setup(struct qedf_ctx *qedf)
1739{
1740	struct fc_lport *lport = qedf->lport;
1741
1742	lport->link_up = 0;
1743	lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1744	lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1745	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1746	    FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1747	lport->boot_time = jiffies;
1748	lport->e_d_tov = 2 * 1000;
1749	lport->r_a_tov = 10 * 1000;
1750
1751	/* Set NPIV support */
1752	lport->does_npiv = 1;
1753	fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1754
1755	fc_set_wwnn(lport, qedf->wwnn);
1756	fc_set_wwpn(lport, qedf->wwpn);
1757
1758	if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
1759		QEDF_ERR(&qedf->dbg_ctx,
1760			 "fcoe_libfc_config failed.\n");
1761		return -ENOMEM;
1762	}
1763
1764	/* Allocate the exchange manager */
1765	fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1766			  0xfffe, NULL);
1767
1768	if (fc_lport_init_stats(lport))
1769		return -ENOMEM;
1770
1771	/* Finish lport config */
1772	fc_lport_config(lport);
1773
1774	/* Set max frame size */
1775	fc_set_mfs(lport, QEDF_MFS);
1776	fc_host_maxframe_size(lport->host) = lport->mfs;
1777
1778	/* Set default dev_loss_tmo based on module parameter */
1779	fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1780
1781	/* Set symbolic node name */
1782	if (qedf->pdev->device == QL45xxx)
1783		snprintf(fc_host_symbolic_name(lport->host), 256,
1784			"Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1785
1786	if (qedf->pdev->device == QL41xxx)
1787		snprintf(fc_host_symbolic_name(lport->host), 256,
1788			"Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1789
1790	qedf_setup_fdmi(qedf);
1791
1792	return 0;
1793}
1794
1795/*
1796 * NPIV functions
1797 */
1798
1799static int qedf_vport_libfc_config(struct fc_vport *vport,
1800	struct fc_lport *lport)
1801{
1802	lport->link_up = 0;
1803	lport->qfull = 0;
1804	lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1805	lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1806	lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1807	    FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1808	lport->boot_time = jiffies;
1809	lport->e_d_tov = 2 * 1000;
1810	lport->r_a_tov = 10 * 1000;
1811	lport->does_npiv = 1; /* Temporary until we add NPIV support */
1812
1813	/* Allocate stats for vport */
1814	if (fc_lport_init_stats(lport))
1815		return -ENOMEM;
1816
1817	/* Finish lport config */
1818	fc_lport_config(lport);
1819
1820	/* offload related configuration */
1821	lport->crc_offload = 0;
1822	lport->seq_offload = 0;
1823	lport->lro_enabled = 0;
1824	lport->lro_xid = 0;
1825	lport->lso_max = 0;
1826
1827	return 0;
1828}
1829
1830static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1831{
1832	struct Scsi_Host *shost = vport_to_shost(vport);
1833	struct fc_lport *n_port = shost_priv(shost);
1834	struct fc_lport *vn_port;
1835	struct qedf_ctx *base_qedf = lport_priv(n_port);
1836	struct qedf_ctx *vport_qedf;
1837
1838	char buf[32];
1839	int rc = 0;
1840
1841	rc = fcoe_validate_vport_create(vport);
1842	if (rc) {
1843		fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1844		QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1845			   "WWPN (0x%s) already exists.\n", buf);
1846		return rc;
1847	}
1848
1849	if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1850		QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1851			   "because link is not up.\n");
1852		return -EIO;
1853	}
1854
1855	vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1856	if (!vn_port) {
1857		QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1858			   "for vport.\n");
1859		return -ENOMEM;
1860	}
1861
1862	fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1863	QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1864	    buf);
1865
1866	/* Copy some fields from base_qedf */
1867	vport_qedf = lport_priv(vn_port);
1868	memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1869
1870	/* Set qedf data specific to this vport */
1871	vport_qedf->lport = vn_port;
1872	/* Use same hba_lock as base_qedf */
1873	vport_qedf->hba_lock = base_qedf->hba_lock;
1874	vport_qedf->pdev = base_qedf->pdev;
1875	vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1876	init_completion(&vport_qedf->flogi_compl);
1877	INIT_LIST_HEAD(&vport_qedf->fcports);
1878	INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work);
1879
1880	rc = qedf_vport_libfc_config(vport, vn_port);
1881	if (rc) {
1882		QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1883		    "for lport stats.\n");
1884		goto err;
1885	}
1886
1887	fc_set_wwnn(vn_port, vport->node_name);
1888	fc_set_wwpn(vn_port, vport->port_name);
1889	vport_qedf->wwnn = vn_port->wwnn;
1890	vport_qedf->wwpn = vn_port->wwpn;
1891
1892	vn_port->host->transportt = qedf_fc_vport_transport_template;
1893	vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1894	vn_port->host->max_lun = qedf_max_lun;
1895	vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1896	vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1897	vn_port->host->max_id = QEDF_MAX_SESSIONS;
1898
1899	rc = scsi_add_host(vn_port->host, &vport->dev);
1900	if (rc) {
1901		QEDF_WARN(&base_qedf->dbg_ctx,
1902			  "Error adding Scsi_Host rc=0x%x.\n", rc);
1903		goto err;
1904	}
1905
1906	/* Set default dev_loss_tmo based on module parameter */
1907	fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1908
1909	/* Init libfc stuffs */
1910	memcpy(&vn_port->tt, &qedf_lport_template,
1911		sizeof(qedf_lport_template));
1912	fc_exch_init(vn_port);
1913	fc_elsct_init(vn_port);
1914	fc_lport_init(vn_port);
1915	fc_disc_init(vn_port);
1916	fc_disc_config(vn_port, vn_port);
1917
1918
1919	/* Allocate the exchange manager */
1920	shost = vport_to_shost(vport);
1921	n_port = shost_priv(shost);
1922	fc_exch_mgr_list_clone(n_port, vn_port);
1923
1924	/* Set max frame size */
1925	fc_set_mfs(vn_port, QEDF_MFS);
1926
1927	fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1928
1929	if (disabled) {
1930		fc_vport_set_state(vport, FC_VPORT_DISABLED);
1931	} else {
1932		vn_port->boot_time = jiffies;
1933		fc_fabric_login(vn_port);
1934		fc_vport_setlink(vn_port);
1935	}
1936
1937	/* Set symbolic node name */
1938	if (base_qedf->pdev->device == QL45xxx)
1939		snprintf(fc_host_symbolic_name(vn_port->host), 256,
1940			 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1941
1942	if (base_qedf->pdev->device == QL41xxx)
1943		snprintf(fc_host_symbolic_name(vn_port->host), 256,
1944			 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1945
1946	/* Set supported speed */
1947	fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds;
1948
1949	/* Set speed */
1950	vn_port->link_speed = n_port->link_speed;
1951
1952	/* Set port type */
1953	fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV;
1954
1955	/* Set maxframe size */
1956	fc_host_maxframe_size(vn_port->host) = n_port->mfs;
1957
1958	QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1959		   vn_port);
1960
1961	/* Set up debug context for vport */
1962	vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1963	vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1964
1965	return 0;
1966
1967err:
1968	scsi_host_put(vn_port->host);
1969	return rc;
1970}
1971
1972static int qedf_vport_destroy(struct fc_vport *vport)
1973{
1974	struct Scsi_Host *shost = vport_to_shost(vport);
1975	struct fc_lport *n_port = shost_priv(shost);
1976	struct fc_lport *vn_port = vport->dd_data;
1977	struct qedf_ctx *qedf = lport_priv(vn_port);
1978
1979	if (!qedf) {
1980		QEDF_ERR(NULL, "qedf is NULL.\n");
1981		goto out;
1982	}
1983
1984	/* Set unloading bit on vport qedf_ctx to prevent more I/O */
1985	set_bit(QEDF_UNLOADING, &qedf->flags);
1986
1987	mutex_lock(&n_port->lp_mutex);
1988	list_del(&vn_port->list);
1989	mutex_unlock(&n_port->lp_mutex);
1990
1991	fc_fabric_logoff(vn_port);
1992	fc_lport_destroy(vn_port);
1993
1994	/* Detach from scsi-ml */
1995	fc_remove_host(vn_port->host);
1996	scsi_remove_host(vn_port->host);
1997
1998	/*
1999	 * Only try to release the exchange manager if the vn_port
2000	 * configuration is complete.
2001	 */
2002	if (vn_port->state == LPORT_ST_READY)
2003		fc_exch_mgr_free(vn_port);
2004
2005	/* Free memory used by statistical counters */
2006	fc_lport_free_stats(vn_port);
2007
2008	/* Release Scsi_Host */
2009	scsi_host_put(vn_port->host);
2010
2011out:
2012	return 0;
2013}
2014
2015static int qedf_vport_disable(struct fc_vport *vport, bool disable)
2016{
2017	struct fc_lport *lport = vport->dd_data;
2018
2019	if (disable) {
2020		fc_vport_set_state(vport, FC_VPORT_DISABLED);
2021		fc_fabric_logoff(lport);
2022	} else {
2023		lport->boot_time = jiffies;
2024		fc_fabric_login(lport);
2025		fc_vport_setlink(lport);
2026	}
2027	return 0;
2028}
2029
2030/*
2031 * During removal we need to wait for all the vports associated with a port
2032 * to be destroyed so we avoid a race condition where libfc is still trying
2033 * to reap vports while the driver remove function has already reaped the
2034 * driver contexts associated with the physical port.
2035 */
2036static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
2037{
2038	struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
2039
2040	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2041	    "Entered.\n");
2042	while (fc_host->npiv_vports_inuse > 0) {
2043		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2044		    "Waiting for all vports to be reaped.\n");
2045		msleep(1000);
2046	}
2047}
2048
2049/**
2050 * qedf_fcoe_reset - Resets the fcoe
2051 *
2052 * @shost: shost the reset is from
2053 *
2054 * Returns: always 0
2055 */
2056static int qedf_fcoe_reset(struct Scsi_Host *shost)
2057{
2058	struct fc_lport *lport = shost_priv(shost);
2059
2060	qedf_ctx_soft_reset(lport);
2061	return 0;
2062}
2063
2064static void qedf_get_host_port_id(struct Scsi_Host *shost)
2065{
2066	struct fc_lport *lport = shost_priv(shost);
2067
2068	fc_host_port_id(shost) = lport->port_id;
2069}
2070
2071static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
2072	*shost)
2073{
2074	struct fc_host_statistics *qedf_stats;
2075	struct fc_lport *lport = shost_priv(shost);
2076	struct qedf_ctx *qedf = lport_priv(lport);
2077	struct qed_fcoe_stats *fw_fcoe_stats;
2078
2079	qedf_stats = fc_get_host_stats(shost);
2080
2081	/* We don't collect offload stats for specific NPIV ports */
2082	if (lport->vport)
2083		goto out;
2084
2085	fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
2086	if (!fw_fcoe_stats) {
2087		QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
2088		    "fw_fcoe_stats.\n");
2089		goto out;
2090	}
2091
2092	mutex_lock(&qedf->stats_mutex);
2093
2094	/* Query firmware for offload stats */
2095	qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
2096
2097	/*
2098	 * The expectation is that we add our offload stats to the stats
2099	 * being maintained by libfc each time the fc_get_host_status callback
2100	 * is invoked. The additions are not carried over for each call to
2101	 * the fc_get_host_stats callback.
2102	 */
2103	qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
2104	    fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
2105	    fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
2106	qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
2107	    fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
2108	    fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
2109	qedf_stats->fcp_input_megabytes +=
2110	    do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
2111	qedf_stats->fcp_output_megabytes +=
2112	    do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
2113	qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
2114	qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
2115	qedf_stats->invalid_crc_count +=
2116	    fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
2117	qedf_stats->dumped_frames =
2118	    fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2119	qedf_stats->error_frames +=
2120	    fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2121	qedf_stats->fcp_input_requests += qedf->input_requests;
2122	qedf_stats->fcp_output_requests += qedf->output_requests;
2123	qedf_stats->fcp_control_requests += qedf->control_requests;
2124	qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
2125	qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
2126
2127	mutex_unlock(&qedf->stats_mutex);
2128	kfree(fw_fcoe_stats);
2129out:
2130	return qedf_stats;
2131}
2132
2133static struct fc_function_template qedf_fc_transport_fn = {
2134	.show_host_node_name = 1,
2135	.show_host_port_name = 1,
2136	.show_host_supported_classes = 1,
2137	.show_host_supported_fc4s = 1,
2138	.show_host_active_fc4s = 1,
2139	.show_host_maxframe_size = 1,
2140
2141	.get_host_port_id = qedf_get_host_port_id,
2142	.show_host_port_id = 1,
2143	.show_host_supported_speeds = 1,
2144	.get_host_speed = fc_get_host_speed,
2145	.show_host_speed = 1,
2146	.show_host_port_type = 1,
2147	.get_host_port_state = fc_get_host_port_state,
2148	.show_host_port_state = 1,
2149	.show_host_symbolic_name = 1,
2150
2151	/*
2152	 * Tell FC transport to allocate enough space to store the backpointer
2153	 * for the associate qedf_rport struct.
2154	 */
2155	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2156				sizeof(struct qedf_rport)),
2157	.show_rport_maxframe_size = 1,
2158	.show_rport_supported_classes = 1,
2159	.show_host_fabric_name = 1,
2160	.show_starget_node_name = 1,
2161	.show_starget_port_name = 1,
2162	.show_starget_port_id = 1,
2163	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2164	.show_rport_dev_loss_tmo = 1,
2165	.get_fc_host_stats = qedf_fc_get_host_stats,
2166	.issue_fc_host_lip = qedf_fcoe_reset,
2167	.vport_create = qedf_vport_create,
2168	.vport_delete = qedf_vport_destroy,
2169	.vport_disable = qedf_vport_disable,
2170	.bsg_request = fc_lport_bsg_request,
2171};
2172
2173static struct fc_function_template qedf_fc_vport_transport_fn = {
2174	.show_host_node_name = 1,
2175	.show_host_port_name = 1,
2176	.show_host_supported_classes = 1,
2177	.show_host_supported_fc4s = 1,
2178	.show_host_active_fc4s = 1,
2179	.show_host_maxframe_size = 1,
2180	.show_host_port_id = 1,
2181	.show_host_supported_speeds = 1,
2182	.get_host_speed = fc_get_host_speed,
2183	.show_host_speed = 1,
2184	.show_host_port_type = 1,
2185	.get_host_port_state = fc_get_host_port_state,
2186	.show_host_port_state = 1,
2187	.show_host_symbolic_name = 1,
2188	.dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2189				sizeof(struct qedf_rport)),
2190	.show_rport_maxframe_size = 1,
2191	.show_rport_supported_classes = 1,
2192	.show_host_fabric_name = 1,
2193	.show_starget_node_name = 1,
2194	.show_starget_port_name = 1,
2195	.show_starget_port_id = 1,
2196	.set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2197	.show_rport_dev_loss_tmo = 1,
2198	.get_fc_host_stats = fc_get_host_stats,
2199	.issue_fc_host_lip = qedf_fcoe_reset,
2200	.bsg_request = fc_lport_bsg_request,
2201};
2202
2203static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2204{
2205	struct qedf_ctx *qedf = fp->qedf;
2206	struct global_queue *que;
2207	struct qed_sb_info *sb_info = fp->sb_info;
2208	struct status_block *sb = sb_info->sb_virt;
2209	u16 prod_idx;
2210
2211	/* Get the pointer to the global CQ this completion is on */
2212	que = qedf->global_queues[fp->sb_id];
2213
2214	/* Be sure all responses have been written to PI */
2215	rmb();
2216
2217	/* Get the current firmware producer index */
2218	prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2219
2220	return (que->cq_prod_idx != prod_idx);
2221}
2222
2223/*
2224 * Interrupt handler code.
2225 */
2226
2227/* Process completion queue and copy CQE contents for deferred processesing
2228 *
2229 * Return true if we should wake the I/O thread, false if not.
2230 */
2231static bool qedf_process_completions(struct qedf_fastpath *fp)
2232{
2233	struct qedf_ctx *qedf = fp->qedf;
2234	struct qed_sb_info *sb_info = fp->sb_info;
2235	struct status_block *sb = sb_info->sb_virt;
2236	struct global_queue *que;
2237	u16 prod_idx;
2238	struct fcoe_cqe *cqe;
2239	struct qedf_io_work *io_work;
2240	unsigned int cpu;
2241	struct qedf_ioreq *io_req = NULL;
2242	u16 xid;
2243	u16 new_cqes;
2244	u32 comp_type;
2245
2246	/* Get the current firmware producer index */
2247	prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2248
2249	/* Get the pointer to the global CQ this completion is on */
2250	que = qedf->global_queues[fp->sb_id];
2251
2252	/* Calculate the amount of new elements since last processing */
2253	new_cqes = (prod_idx >= que->cq_prod_idx) ?
2254	    (prod_idx - que->cq_prod_idx) :
2255	    0x10000 - que->cq_prod_idx + prod_idx;
2256
2257	/* Save producer index */
2258	que->cq_prod_idx = prod_idx;
2259
2260	while (new_cqes) {
2261		fp->completions++;
2262		cqe = &que->cq[que->cq_cons_idx];
2263
2264		comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2265		    FCOE_CQE_CQE_TYPE_MASK;
2266
2267		/*
2268		 * Process unsolicited CQEs directly in the interrupt handler
2269		 * sine we need the fastpath ID
2270		 */
2271		if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2272			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2273			   "Unsolicated CQE.\n");
2274			qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2275			/*
2276			 * Don't add a work list item.  Increment consumer
2277			 * consumer index and move on.
2278			 */
2279			goto inc_idx;
2280		}
2281
2282		xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2283		io_req = &qedf->cmd_mgr->cmds[xid];
2284
2285		/*
2286		 * Figure out which percpu thread we should queue this I/O
2287		 * on.
2288		 */
2289		if (!io_req)
2290			/* If there is not io_req associated with this CQE
2291			 * just queue it on CPU 0
2292			 */
2293			cpu = 0;
2294		else {
2295			cpu = io_req->cpu;
2296			io_req->int_cpu = smp_processor_id();
2297		}
2298
2299		io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2300		if (!io_work) {
2301			QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2302				   "work for I/O completion.\n");
2303			continue;
2304		}
2305		memset(io_work, 0, sizeof(struct qedf_io_work));
2306
2307		INIT_WORK(&io_work->work, qedf_fp_io_handler);
2308
2309		/* Copy contents of CQE for deferred processing */
2310		memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2311
2312		io_work->qedf = fp->qedf;
2313		io_work->fp = NULL; /* Only used for unsolicited frames */
2314
2315		queue_work_on(cpu, qedf_io_wq, &io_work->work);
2316
2317inc_idx:
2318		que->cq_cons_idx++;
2319		if (que->cq_cons_idx == fp->cq_num_entries)
2320			que->cq_cons_idx = 0;
2321		new_cqes--;
2322	}
2323
2324	return true;
2325}
2326
2327
2328/* MSI-X fastpath handler code */
2329static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2330{
2331	struct qedf_fastpath *fp = dev_id;
2332
2333	if (!fp) {
2334		QEDF_ERR(NULL, "fp is null.\n");
2335		return IRQ_HANDLED;
2336	}
2337	if (!fp->sb_info) {
2338		QEDF_ERR(NULL, "fp->sb_info in null.");
2339		return IRQ_HANDLED;
2340	}
2341
2342	/*
2343	 * Disable interrupts for this status block while we process new
2344	 * completions
2345	 */
2346	qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2347
2348	while (1) {
2349		qedf_process_completions(fp);
2350
2351		if (qedf_fp_has_work(fp) == 0) {
2352			/* Update the sb information */
2353			qed_sb_update_sb_idx(fp->sb_info);
2354
2355			/* Check for more work */
2356			rmb();
2357
2358			if (qedf_fp_has_work(fp) == 0) {
2359				/* Re-enable interrupts */
2360				qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2361				return IRQ_HANDLED;
2362			}
2363		}
2364	}
2365
2366	/* Do we ever want to break out of above loop? */
2367	return IRQ_HANDLED;
2368}
2369
2370/* simd handler for MSI/INTa */
2371static void qedf_simd_int_handler(void *cookie)
2372{
2373	/* Cookie is qedf_ctx struct */
2374	struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2375
2376	QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2377}
2378
2379#define QEDF_SIMD_HANDLER_NUM		0
2380static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2381{
2382	int i;
2383	u16 vector_idx = 0;
2384	u32 vector;
2385
2386	if (qedf->int_info.msix_cnt) {
2387		for (i = 0; i < qedf->int_info.used_cnt; i++) {
2388			vector_idx = i * qedf->dev_info.common.num_hwfns +
2389				qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2390			QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2391				  "Freeing IRQ #%d vector_idx=%d.\n",
2392				  i, vector_idx);
2393			vector = qedf->int_info.msix[vector_idx].vector;
2394			synchronize_irq(vector);
2395			irq_set_affinity_hint(vector, NULL);
2396			irq_set_affinity_notifier(vector, NULL);
2397			free_irq(vector, &qedf->fp_array[i]);
2398		}
2399	} else
2400		qed_ops->common->simd_handler_clean(qedf->cdev,
2401		    QEDF_SIMD_HANDLER_NUM);
2402
2403	qedf->int_info.used_cnt = 0;
2404	qed_ops->common->set_fp_int(qedf->cdev, 0);
2405}
2406
2407static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2408{
2409	int i, rc, cpu;
2410	u16 vector_idx = 0;
2411	u32 vector;
2412
2413	cpu = cpumask_first(cpu_online_mask);
2414	for (i = 0; i < qedf->num_queues; i++) {
2415		vector_idx = i * qedf->dev_info.common.num_hwfns +
2416			qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2417		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2418			  "Requesting IRQ #%d vector_idx=%d.\n",
2419			  i, vector_idx);
2420		vector = qedf->int_info.msix[vector_idx].vector;
2421		rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
2422				 &qedf->fp_array[i]);
2423
2424		if (rc) {
2425			QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2426			qedf_sync_free_irqs(qedf);
2427			return rc;
2428		}
2429
2430		qedf->int_info.used_cnt++;
2431		rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
2432		cpu = cpumask_next(cpu, cpu_online_mask);
2433	}
2434
2435	return 0;
2436}
2437
2438static int qedf_setup_int(struct qedf_ctx *qedf)
2439{
2440	int rc = 0;
2441
2442	/*
2443	 * Learn interrupt configuration
2444	 */
2445	rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2446	if (rc <= 0)
2447		return 0;
2448
2449	rc  = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2450	if (rc)
2451		return 0;
2452
2453	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2454		   "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2455		   num_online_cpus());
2456
2457	if (qedf->int_info.msix_cnt)
2458		return qedf_request_msix_irq(qedf);
2459
2460	qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2461	    QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2462	qedf->int_info.used_cnt = 1;
2463
2464	QEDF_ERR(&qedf->dbg_ctx,
2465		 "Cannot load driver due to a lack of MSI-X vectors.\n");
2466	return -EINVAL;
2467}
2468
2469/* Main function for libfc frame reception */
2470static void qedf_recv_frame(struct qedf_ctx *qedf,
2471	struct sk_buff *skb)
2472{
2473	u32 fr_len;
2474	struct fc_lport *lport;
2475	struct fc_frame_header *fh;
2476	struct fcoe_crc_eof crc_eof;
2477	struct fc_frame *fp;
2478	u8 *mac = NULL;
2479	u8 *dest_mac = NULL;
2480	struct fcoe_hdr *hp;
2481	struct qedf_rport *fcport;
2482	struct fc_lport *vn_port;
2483	u32 f_ctl;
2484
2485	lport = qedf->lport;
2486	if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2487		QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2488		kfree_skb(skb);
2489		return;
2490	}
2491
2492	if (skb_is_nonlinear(skb))
2493		skb_linearize(skb);
2494	mac = eth_hdr(skb)->h_source;
2495	dest_mac = eth_hdr(skb)->h_dest;
2496
2497	/* Pull the header */
2498	hp = (struct fcoe_hdr *)skb->data;
2499	fh = (struct fc_frame_header *) skb_transport_header(skb);
2500	skb_pull(skb, sizeof(struct fcoe_hdr));
2501	fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2502
2503	fp = (struct fc_frame *)skb;
2504	fc_frame_init(fp);
2505	fr_dev(fp) = lport;
2506	fr_sof(fp) = hp->fcoe_sof;
2507	if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2508		QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
2509		kfree_skb(skb);
2510		return;
2511	}
2512	fr_eof(fp) = crc_eof.fcoe_eof;
2513	fr_crc(fp) = crc_eof.fcoe_crc32;
2514	if (pskb_trim(skb, fr_len)) {
2515		QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
2516		kfree_skb(skb);
2517		return;
2518	}
2519
2520	fh = fc_frame_header_get(fp);
2521
2522	/*
2523	 * Invalid frame filters.
2524	 */
2525
2526	if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2527	    fh->fh_type == FC_TYPE_FCP) {
2528		/* Drop FCP data. We dont this in L2 path */
2529		kfree_skb(skb);
2530		return;
2531	}
2532	if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2533	    fh->fh_type == FC_TYPE_ELS) {
2534		switch (fc_frame_payload_op(fp)) {
2535		case ELS_LOGO:
2536			if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2537				/* drop non-FIP LOGO */
2538				kfree_skb(skb);
2539				return;
2540			}
2541			break;
2542		}
2543	}
2544
2545	if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2546		/* Drop incoming ABTS */
2547		kfree_skb(skb);
2548		return;
2549	}
2550
2551	if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2552		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2553		    "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2554		kfree_skb(skb);
2555		return;
2556	}
2557
2558	if (qedf->ctlr.state) {
2559		if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2560			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2561			    "Wrong source address: mac:%pM dest_addr:%pM.\n",
2562			    mac, qedf->ctlr.dest_addr);
2563			kfree_skb(skb);
2564			return;
2565		}
2566	}
2567
2568	vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2569
2570	/*
2571	 * If the destination ID from the frame header does not match what we
2572	 * have on record for lport and the search for a NPIV port came up
2573	 * empty then this is not addressed to our port so simply drop it.
2574	 */
2575	if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2576		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2577			  "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
2578			  lport->port_id, ntoh24(fh->fh_d_id));
2579		kfree_skb(skb);
2580		return;
2581	}
2582
2583	f_ctl = ntoh24(fh->fh_f_ctl);
2584	if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2585	    (f_ctl & FC_FC_EX_CTX)) {
2586		/* Drop incoming ABTS response that has both SEQ/EX CTX set */
2587		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2588			  "Dropping ABTS response as both SEQ/EX CTX set.\n");
2589		kfree_skb(skb);
2590		return;
2591	}
2592
2593	/*
2594	 * If a connection is uploading, drop incoming FCoE frames as there
2595	 * is a small window where we could try to return a frame while libfc
2596	 * is trying to clean things up.
2597	 */
2598
2599	/* Get fcport associated with d_id if it exists */
2600	fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2601
2602	if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2603	    &fcport->flags)) {
2604		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2605		    "Connection uploading, dropping fp=%p.\n", fp);
2606		kfree_skb(skb);
2607		return;
2608	}
2609
2610	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2611	    "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2612	    ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2613	    fh->fh_type);
2614	if (qedf_dump_frames)
2615		print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2616		    1, skb->data, skb->len, false);
2617	fc_exch_recv(lport, fp);
2618}
2619
2620static void qedf_ll2_process_skb(struct work_struct *work)
2621{
2622	struct qedf_skb_work *skb_work =
2623	    container_of(work, struct qedf_skb_work, work);
2624	struct qedf_ctx *qedf = skb_work->qedf;
2625	struct sk_buff *skb = skb_work->skb;
2626	struct ethhdr *eh;
2627
2628	if (!qedf) {
2629		QEDF_ERR(NULL, "qedf is NULL\n");
2630		goto err_out;
2631	}
2632
2633	eh = (struct ethhdr *)skb->data;
2634
2635	/* Undo VLAN encapsulation */
2636	if (eh->h_proto == htons(ETH_P_8021Q)) {
2637		memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2638		eh = skb_pull(skb, VLAN_HLEN);
2639		skb_reset_mac_header(skb);
2640	}
2641
2642	/*
2643	 * Process either a FIP frame or FCoE frame based on the
2644	 * protocol value.  If it's not either just drop the
2645	 * frame.
2646	 */
2647	if (eh->h_proto == htons(ETH_P_FIP)) {
2648		qedf_fip_recv(qedf, skb);
2649		goto out;
2650	} else if (eh->h_proto == htons(ETH_P_FCOE)) {
2651		__skb_pull(skb, ETH_HLEN);
2652		qedf_recv_frame(qedf, skb);
2653		goto out;
2654	} else
2655		goto err_out;
2656
2657err_out:
2658	kfree_skb(skb);
2659out:
2660	kfree(skb_work);
2661	return;
2662}
2663
2664static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2665	u32 arg1, u32 arg2)
2666{
2667	struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2668	struct qedf_skb_work *skb_work;
2669
2670	if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2671		QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2672			  "Dropping frame as link state is down.\n");
2673		kfree_skb(skb);
2674		return 0;
2675	}
2676
2677	skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2678	if (!skb_work) {
2679		QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2680			   "dropping frame.\n");
2681		kfree_skb(skb);
2682		return 0;
2683	}
2684
2685	INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2686	skb_work->skb = skb;
2687	skb_work->qedf = qedf;
2688	queue_work(qedf->ll2_recv_wq, &skb_work->work);
2689
2690	return 0;
2691}
2692
2693static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2694	.rx_cb = qedf_ll2_rx,
2695	.tx_cb = NULL,
2696};
2697
2698/* Main thread to process I/O completions */
2699void qedf_fp_io_handler(struct work_struct *work)
2700{
2701	struct qedf_io_work *io_work =
2702	    container_of(work, struct qedf_io_work, work);
2703	u32 comp_type;
2704
2705	/*
2706	 * Deferred part of unsolicited CQE sends
2707	 * frame to libfc.
2708	 */
2709	comp_type = (io_work->cqe.cqe_data >>
2710	    FCOE_CQE_CQE_TYPE_SHIFT) &
2711	    FCOE_CQE_CQE_TYPE_MASK;
2712	if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2713	    io_work->fp)
2714		fc_exch_recv(io_work->qedf->lport, io_work->fp);
2715	else
2716		qedf_process_cqe(io_work->qedf, &io_work->cqe);
2717
2718	kfree(io_work);
2719}
2720
2721static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2722	struct qed_sb_info *sb_info, u16 sb_id)
2723{
2724	struct status_block *sb_virt;
2725	dma_addr_t sb_phys;
2726	int ret;
2727
2728	sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2729	    sizeof(struct status_block), &sb_phys, GFP_KERNEL);
2730
2731	if (!sb_virt) {
2732		QEDF_ERR(&qedf->dbg_ctx,
2733			 "Status block allocation failed for id = %d.\n",
2734			 sb_id);
2735		return -ENOMEM;
2736	}
2737
2738	ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2739	    sb_id, QED_SB_TYPE_STORAGE);
2740
2741	if (ret) {
2742		dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_virt), sb_virt, sb_phys);
2743		QEDF_ERR(&qedf->dbg_ctx,
2744			 "Status block initialization failed (0x%x) for id = %d.\n",
2745			 ret, sb_id);
2746		return ret;
2747	}
2748
2749	return 0;
2750}
2751
2752static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2753{
2754	if (sb_info->sb_virt)
2755		dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2756		    (void *)sb_info->sb_virt, sb_info->sb_phys);
2757}
2758
2759static void qedf_destroy_sb(struct qedf_ctx *qedf)
2760{
2761	int id;
2762	struct qedf_fastpath *fp = NULL;
2763
2764	for (id = 0; id < qedf->num_queues; id++) {
2765		fp = &(qedf->fp_array[id]);
2766		if (fp->sb_id == QEDF_SB_ID_NULL)
2767			break;
2768		qedf_free_sb(qedf, fp->sb_info);
2769		kfree(fp->sb_info);
2770	}
2771	kfree(qedf->fp_array);
2772}
2773
2774static int qedf_prepare_sb(struct qedf_ctx *qedf)
2775{
2776	int id;
2777	struct qedf_fastpath *fp;
2778	int ret;
2779
2780	qedf->fp_array =
2781	    kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2782		GFP_KERNEL);
2783
2784	if (!qedf->fp_array) {
2785		QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2786			  "failed.\n");
2787		return -ENOMEM;
2788	}
2789
2790	for (id = 0; id < qedf->num_queues; id++) {
2791		fp = &(qedf->fp_array[id]);
2792		fp->sb_id = QEDF_SB_ID_NULL;
2793		fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2794		if (!fp->sb_info) {
2795			QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2796				  "allocation failed.\n");
2797			goto err;
2798		}
2799		ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2800		if (ret) {
2801			QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2802				  "initialization failed.\n");
2803			goto err;
2804		}
2805		fp->sb_id = id;
2806		fp->qedf = qedf;
2807		fp->cq_num_entries =
2808		    qedf->global_queues[id]->cq_mem_size /
2809		    sizeof(struct fcoe_cqe);
2810	}
2811err:
2812	return 0;
2813}
2814
2815void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2816{
2817	u16 xid;
2818	struct qedf_ioreq *io_req;
2819	struct qedf_rport *fcport;
2820	u32 comp_type;
2821	u8 io_comp_type;
2822	unsigned long flags;
2823
2824	comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2825	    FCOE_CQE_CQE_TYPE_MASK;
2826
2827	xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2828	io_req = &qedf->cmd_mgr->cmds[xid];
2829
2830	/* Completion not for a valid I/O anymore so just return */
2831	if (!io_req) {
2832		QEDF_ERR(&qedf->dbg_ctx,
2833			 "io_req is NULL for xid=0x%x.\n", xid);
2834		return;
2835	}
2836
2837	fcport = io_req->fcport;
2838
2839	if (fcport == NULL) {
2840		QEDF_ERR(&qedf->dbg_ctx,
2841			 "fcport is NULL for xid=0x%x io_req=%p.\n",
2842			 xid, io_req);
2843		return;
2844	}
2845
2846	/*
2847	 * Check that fcport is offloaded.  If it isn't then the spinlock
2848	 * isn't valid and shouldn't be taken. We should just return.
2849	 */
2850	if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2851		QEDF_ERR(&qedf->dbg_ctx,
2852			 "Session not offloaded yet, fcport = %p.\n", fcport);
2853		return;
2854	}
2855
2856	spin_lock_irqsave(&fcport->rport_lock, flags);
2857	io_comp_type = io_req->cmd_type;
2858	spin_unlock_irqrestore(&fcport->rport_lock, flags);
2859
2860	switch (comp_type) {
2861	case FCOE_GOOD_COMPLETION_CQE_TYPE:
2862		atomic_inc(&fcport->free_sqes);
2863		switch (io_comp_type) {
2864		case QEDF_SCSI_CMD:
2865			qedf_scsi_completion(qedf, cqe, io_req);
2866			break;
2867		case QEDF_ELS:
2868			qedf_process_els_compl(qedf, cqe, io_req);
2869			break;
2870		case QEDF_TASK_MGMT_CMD:
2871			qedf_process_tmf_compl(qedf, cqe, io_req);
2872			break;
2873		case QEDF_SEQ_CLEANUP:
2874			qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2875			break;
2876		}
2877		break;
2878	case FCOE_ERROR_DETECTION_CQE_TYPE:
2879		atomic_inc(&fcport->free_sqes);
2880		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2881		    "Error detect CQE.\n");
2882		qedf_process_error_detect(qedf, cqe, io_req);
2883		break;
2884	case FCOE_EXCH_CLEANUP_CQE_TYPE:
2885		atomic_inc(&fcport->free_sqes);
2886		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2887		    "Cleanup CQE.\n");
2888		qedf_process_cleanup_compl(qedf, cqe, io_req);
2889		break;
2890	case FCOE_ABTS_CQE_TYPE:
2891		atomic_inc(&fcport->free_sqes);
2892		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2893		    "Abort CQE.\n");
2894		qedf_process_abts_compl(qedf, cqe, io_req);
2895		break;
2896	case FCOE_DUMMY_CQE_TYPE:
2897		atomic_inc(&fcport->free_sqes);
2898		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2899		    "Dummy CQE.\n");
2900		break;
2901	case FCOE_LOCAL_COMP_CQE_TYPE:
2902		atomic_inc(&fcport->free_sqes);
2903		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2904		    "Local completion CQE.\n");
2905		break;
2906	case FCOE_WARNING_CQE_TYPE:
2907		atomic_inc(&fcport->free_sqes);
2908		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2909		    "Warning CQE.\n");
2910		qedf_process_warning_compl(qedf, cqe, io_req);
2911		break;
2912	case MAX_FCOE_CQE_TYPE:
2913		atomic_inc(&fcport->free_sqes);
2914		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2915		    "Max FCoE CQE.\n");
2916		break;
2917	default:
2918		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2919		    "Default CQE.\n");
2920		break;
2921	}
2922}
2923
2924static void qedf_free_bdq(struct qedf_ctx *qedf)
2925{
2926	int i;
2927
2928	if (qedf->bdq_pbl_list)
2929		dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2930		    qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2931
2932	if (qedf->bdq_pbl)
2933		dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2934		    qedf->bdq_pbl, qedf->bdq_pbl_dma);
2935
2936	for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2937		if (qedf->bdq[i].buf_addr) {
2938			dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2939			    qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2940		}
2941	}
2942}
2943
2944static void qedf_free_global_queues(struct qedf_ctx *qedf)
2945{
2946	int i;
2947	struct global_queue **gl = qedf->global_queues;
2948
2949	for (i = 0; i < qedf->num_queues; i++) {
2950		if (!gl[i])
2951			continue;
2952
2953		if (gl[i]->cq)
2954			dma_free_coherent(&qedf->pdev->dev,
2955			    gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2956		if (gl[i]->cq_pbl)
2957			dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2958			    gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2959
2960		kfree(gl[i]);
2961	}
2962
2963	qedf_free_bdq(qedf);
2964}
2965
2966static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2967{
2968	int i;
2969	struct scsi_bd *pbl;
2970	u64 *list;
2971
2972	/* Alloc dma memory for BDQ buffers */
2973	for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2974		qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2975		    QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2976		if (!qedf->bdq[i].buf_addr) {
2977			QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2978			    "buffer %d.\n", i);
2979			return -ENOMEM;
2980		}
2981	}
2982
2983	/* Alloc dma memory for BDQ page buffer list */
2984	qedf->bdq_pbl_mem_size =
2985	    QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2986	qedf->bdq_pbl_mem_size =
2987	    ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2988
2989	qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2990	    qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2991	if (!qedf->bdq_pbl) {
2992		QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2993		return -ENOMEM;
2994	}
2995
2996	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2997		  "BDQ PBL addr=0x%p dma=%pad\n",
2998		  qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2999
3000	/*
3001	 * Populate BDQ PBL with physical and virtual address of individual
3002	 * BDQ buffers
3003	 */
3004	pbl = (struct scsi_bd *)qedf->bdq_pbl;
3005	for (i = 0; i < QEDF_BDQ_SIZE; i++) {
3006		pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
3007		pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
3008		pbl->opaque.fcoe_opaque.hi = 0;
3009		/* Opaque lo data is an index into the BDQ array */
3010		pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
3011		pbl++;
3012	}
3013
3014	/* Allocate list of PBL pages */
3015	qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
3016						QEDF_PAGE_SIZE,
3017						&qedf->bdq_pbl_list_dma,
3018						GFP_KERNEL);
3019	if (!qedf->bdq_pbl_list) {
3020		QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
3021		return -ENOMEM;
3022	}
3023
3024	/*
3025	 * Now populate PBL list with pages that contain pointers to the
3026	 * individual buffers.
3027	 */
3028	qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
3029	    QEDF_PAGE_SIZE;
3030	list = (u64 *)qedf->bdq_pbl_list;
3031	for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
3032		*list = qedf->bdq_pbl_dma;
3033		list++;
3034	}
3035
3036	return 0;
3037}
3038
3039static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
3040{
3041	u32 *list;
3042	int i;
3043	int status;
3044	u32 *pbl;
3045	dma_addr_t page;
3046	int num_pages;
3047
3048	/* Allocate and map CQs, RQs */
3049	/*
3050	 * Number of global queues (CQ / RQ). This should
3051	 * be <= number of available MSIX vectors for the PF
3052	 */
3053	if (!qedf->num_queues) {
3054		QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
3055		return -ENOMEM;
3056	}
3057
3058	/*
3059	 * Make sure we allocated the PBL that will contain the physical
3060	 * addresses of our queues
3061	 */
3062	if (!qedf->p_cpuq) {
3063		QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
3064		return -EINVAL;
3065	}
3066
3067	qedf->global_queues = kzalloc((sizeof(struct global_queue *)
3068	    * qedf->num_queues), GFP_KERNEL);
3069	if (!qedf->global_queues) {
3070		QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
3071			  "queues array ptr memory\n");
3072		return -ENOMEM;
3073	}
3074	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3075		   "qedf->global_queues=%p.\n", qedf->global_queues);
3076
3077	/* Allocate DMA coherent buffers for BDQ */
3078	status = qedf_alloc_bdq(qedf);
3079	if (status) {
3080		QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
3081		goto mem_alloc_failure;
3082	}
3083
3084	/* Allocate a CQ and an associated PBL for each MSI-X vector */
3085	for (i = 0; i < qedf->num_queues; i++) {
3086		qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
3087		    GFP_KERNEL);
3088		if (!qedf->global_queues[i]) {
3089			QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
3090				   "global queue %d.\n", i);
3091			status = -ENOMEM;
3092			goto mem_alloc_failure;
3093		}
3094
3095		qedf->global_queues[i]->cq_mem_size =
3096		    FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3097		qedf->global_queues[i]->cq_mem_size =
3098		    ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
3099
3100		qedf->global_queues[i]->cq_pbl_size =
3101		    (qedf->global_queues[i]->cq_mem_size /
3102		    PAGE_SIZE) * sizeof(void *);
3103		qedf->global_queues[i]->cq_pbl_size =
3104		    ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
3105
3106		qedf->global_queues[i]->cq =
3107		    dma_alloc_coherent(&qedf->pdev->dev,
3108				       qedf->global_queues[i]->cq_mem_size,
3109				       &qedf->global_queues[i]->cq_dma,
3110				       GFP_KERNEL);
3111
3112		if (!qedf->global_queues[i]->cq) {
3113			QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
3114			status = -ENOMEM;
3115			goto mem_alloc_failure;
3116		}
3117
3118		qedf->global_queues[i]->cq_pbl =
3119		    dma_alloc_coherent(&qedf->pdev->dev,
3120				       qedf->global_queues[i]->cq_pbl_size,
3121				       &qedf->global_queues[i]->cq_pbl_dma,
3122				       GFP_KERNEL);
3123
3124		if (!qedf->global_queues[i]->cq_pbl) {
3125			QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
3126			status = -ENOMEM;
3127			goto mem_alloc_failure;
3128		}
3129
3130		/* Create PBL */
3131		num_pages = qedf->global_queues[i]->cq_mem_size /
3132		    QEDF_PAGE_SIZE;
3133		page = qedf->global_queues[i]->cq_dma;
3134		pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
3135
3136		while (num_pages--) {
3137			*pbl = U64_LO(page);
3138			pbl++;
3139			*pbl = U64_HI(page);
3140			pbl++;
3141			page += QEDF_PAGE_SIZE;
3142		}
3143		/* Set the initial consumer index for cq */
3144		qedf->global_queues[i]->cq_cons_idx = 0;
3145	}
3146
3147	list = (u32 *)qedf->p_cpuq;
3148
3149	/*
3150	 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
3151	 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
3152	 * to the physical address which contains an array of pointers to
3153	 * the physical addresses of the specific queue pages.
3154	 */
3155	for (i = 0; i < qedf->num_queues; i++) {
3156		*list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
3157		list++;
3158		*list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
3159		list++;
3160		*list = U64_LO(0);
3161		list++;
3162		*list = U64_HI(0);
3163		list++;
3164	}
3165
3166	return 0;
3167
3168mem_alloc_failure:
3169	qedf_free_global_queues(qedf);
3170	return status;
3171}
3172
3173static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
3174{
3175	u8 sq_num_pbl_pages;
3176	u32 sq_mem_size;
3177	u32 cq_mem_size;
3178	u32 cq_num_entries;
3179	int rval;
3180
3181	/*
3182	 * The number of completion queues/fastpath interrupts/status blocks
3183	 * we allocation is the minimum off:
3184	 *
3185	 * Number of CPUs
3186	 * Number allocated by qed for our PCI function
3187	 */
3188	qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
3189
3190	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3191		   qedf->num_queues);
3192
3193	qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3194	    qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3195	    &qedf->hw_p_cpuq, GFP_KERNEL);
3196
3197	if (!qedf->p_cpuq) {
3198		QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3199		return 1;
3200	}
3201
3202	rval = qedf_alloc_global_queues(qedf);
3203	if (rval) {
3204		QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3205			  "failed.\n");
3206		return 1;
3207	}
3208
3209	/* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3210	sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3211	sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3212	sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3213
3214	/* Calculate CQ num entries */
3215	cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3216	cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3217	cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3218
3219	memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3220
3221	/* Setup the value for fcoe PF */
3222	qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3223	qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3224	qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3225	    (u64)qedf->hw_p_cpuq;
3226	qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3227
3228	qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3229
3230	qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3231	qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3232
3233	/* log_page_size: 12 for 4KB pages */
3234	qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3235
3236	qedf->pf_params.fcoe_pf_params.mtu = 9000;
3237	qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3238	qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3239
3240	/* BDQ address and size */
3241	qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3242	    qedf->bdq_pbl_list_dma;
3243	qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3244	    qedf->bdq_pbl_list_num_entries;
3245	qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3246
3247	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3248	    "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3249	    qedf->bdq_pbl_list,
3250	    qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3251	    qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3252
3253	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3254	    "cq_num_entries=%d.\n",
3255	    qedf->pf_params.fcoe_pf_params.cq_num_entries);
3256
3257	return 0;
3258}
3259
3260/* Free DMA coherent memory for array of queue pointers we pass to qed */
3261static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3262{
3263	size_t size = 0;
3264
3265	if (qedf->p_cpuq) {
3266		size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3267		dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3268		    qedf->hw_p_cpuq);
3269	}
3270
3271	qedf_free_global_queues(qedf);
3272
3273	kfree(qedf->global_queues);
3274}
3275
3276/*
3277 * PCI driver functions
3278 */
3279
3280static const struct pci_device_id qedf_pci_tbl[] = {
3281	{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3282	{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3283	{0}
3284};
3285MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3286
3287static struct pci_driver qedf_pci_driver = {
3288	.name = QEDF_MODULE_NAME,
3289	.id_table = qedf_pci_tbl,
3290	.probe = qedf_probe,
3291	.remove = qedf_remove,
3292	.shutdown = qedf_shutdown,
3293	.suspend = qedf_suspend,
3294};
3295
3296static int __qedf_probe(struct pci_dev *pdev, int mode)
3297{
3298	int rc = -EINVAL;
3299	struct fc_lport *lport;
3300	struct qedf_ctx *qedf = NULL;
3301	struct Scsi_Host *host;
3302	bool is_vf = false;
3303	struct qed_ll2_params params;
3304	char host_buf[20];
3305	struct qed_link_params link_params;
3306	int status;
3307	void *task_start, *task_end;
3308	struct qed_slowpath_params slowpath_params;
3309	struct qed_probe_params qed_params;
3310	u16 retry_cnt = 10;
3311
3312	/*
3313	 * When doing error recovery we didn't reap the lport so don't try
3314	 * to reallocate it.
3315	 */
3316retry_probe:
3317	if (mode == QEDF_MODE_RECOVERY)
3318		msleep(2000);
3319
3320	if (mode != QEDF_MODE_RECOVERY) {
3321		lport = libfc_host_alloc(&qedf_host_template,
3322		    sizeof(struct qedf_ctx));
3323
3324		if (!lport) {
3325			QEDF_ERR(NULL, "Could not allocate lport.\n");
3326			rc = -ENOMEM;
3327			goto err0;
3328		}
3329
3330		fc_disc_init(lport);
3331
3332		/* Initialize qedf_ctx */
3333		qedf = lport_priv(lport);
3334		set_bit(QEDF_PROBING, &qedf->flags);
3335		qedf->lport = lport;
3336		qedf->ctlr.lp = lport;
3337		qedf->pdev = pdev;
3338		qedf->dbg_ctx.pdev = pdev;
3339		qedf->dbg_ctx.host_no = lport->host->host_no;
3340		spin_lock_init(&qedf->hba_lock);
3341		INIT_LIST_HEAD(&qedf->fcports);
3342		qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3343		atomic_set(&qedf->num_offloads, 0);
3344		qedf->stop_io_on_error = false;
3345		pci_set_drvdata(pdev, qedf);
3346		init_completion(&qedf->fipvlan_compl);
3347		mutex_init(&qedf->stats_mutex);
3348		mutex_init(&qedf->flush_mutex);
3349		qedf->flogi_pending = 0;
3350
3351		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3352		   "QLogic FastLinQ FCoE Module qedf %s, "
3353		   "FW %d.%d.%d.%d\n", QEDF_VERSION,
3354		   FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3355		   FW_ENGINEERING_VERSION);
3356	} else {
3357		/* Init pointers during recovery */
3358		qedf = pci_get_drvdata(pdev);
3359		set_bit(QEDF_PROBING, &qedf->flags);
3360		lport = qedf->lport;
3361	}
3362
3363	QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
3364
3365	host = lport->host;
3366
3367	/* Allocate mempool for qedf_io_work structs */
3368	qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3369	    qedf_io_work_cache);
3370	if (qedf->io_mempool == NULL) {
3371		QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3372		goto err1;
3373	}
3374	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3375	    qedf->io_mempool);
3376
3377	qedf->link_update_wq = alloc_workqueue("qedf_%u_link",
3378					       WQ_MEM_RECLAIM | WQ_PERCPU,
3379					       1, qedf->lport->host->host_no);
3380	INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3381	INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3382	INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3383	INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
3384	qedf->fipvlan_retries = qedf_fipvlan_retries;
3385	/* Set a default prio in case DCBX doesn't converge */
3386	if (qedf_default_prio > -1) {
3387		/*
3388		 * This is the case where we pass a modparam in so we want to
3389		 * honor it even if dcbx doesn't converge.
3390		 */
3391		qedf->prio = qedf_default_prio;
3392	} else
3393		qedf->prio = QEDF_DEFAULT_PRIO;
3394
3395	/*
3396	 * Common probe. Takes care of basic hardware init and pci_*
3397	 * functions.
3398	 */
3399	memset(&qed_params, 0, sizeof(qed_params));
3400	qed_params.protocol = QED_PROTOCOL_FCOE;
3401	qed_params.dp_module = qedf_dp_module;
3402	qed_params.dp_level = qedf_dp_level;
3403	qed_params.is_vf = is_vf;
3404	qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3405	if (!qedf->cdev) {
3406		if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
3407			QEDF_ERR(&qedf->dbg_ctx,
3408				"Retry %d initialize hardware\n", retry_cnt);
3409			retry_cnt--;
3410			goto retry_probe;
3411		}
3412		QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
3413		rc = -ENODEV;
3414		goto err1;
3415	}
3416
3417	/* Learn information crucial for qedf to progress */
3418	rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3419	if (rc) {
3420		QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3421		goto err1;
3422	}
3423
3424	QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
3425		  "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
3426		  qedf->dev_info.common.num_hwfns,
3427		  qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
3428
3429	/* queue allocation code should come here
3430	 * order should be
3431	 * 	slowpath_start
3432	 * 	status block allocation
3433	 *	interrupt registration (to get min number of queues)
3434	 *	set_fcoe_pf_param
3435	 *	qed_sp_fcoe_func_start
3436	 */
3437	rc = qedf_set_fcoe_pf_param(qedf);
3438	if (rc) {
3439		QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3440		goto err2;
3441	}
3442	qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3443
3444	/* Learn information crucial for qedf to progress */
3445	rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3446	if (rc) {
3447		QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
3448		goto err2;
3449	}
3450
3451	if (mode != QEDF_MODE_RECOVERY) {
3452		qedf->devlink = qed_ops->common->devlink_register(qedf->cdev);
3453		if (IS_ERR(qedf->devlink)) {
3454			QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n");
3455			rc = PTR_ERR(qedf->devlink);
3456			qedf->devlink = NULL;
3457			goto err2;
3458		}
3459	}
3460
3461	/* Record BDQ producer doorbell addresses */
3462	qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3463	qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3464	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3465	    "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3466	    qedf->bdq_secondary_prod);
3467
3468	qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3469
3470	rc = qedf_prepare_sb(qedf);
3471	if (rc) {
3472
3473		QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3474		goto err2;
3475	}
3476
3477	/* Start the Slowpath-process */
3478	memset(&slowpath_params, 0, sizeof(struct qed_slowpath_params));
3479	slowpath_params.int_mode = QED_INT_MODE_MSIX;
3480	slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3481	slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3482	slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3483	slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3484	strscpy(slowpath_params.name, "qedf", sizeof(slowpath_params.name));
3485	rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3486	if (rc) {
3487		QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3488		goto err2;
3489	}
3490
3491	/*
3492	 * update_pf_params needs to be called before and after slowpath
3493	 * start
3494	 */
3495	qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3496
3497	/* Setup interrupts */
3498	rc = qedf_setup_int(qedf);
3499	if (rc) {
3500		QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
3501		goto err3;
3502	}
3503
3504	rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3505	if (rc) {
3506		QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3507		goto err4;
3508	}
3509	task_start = qedf_get_task_mem(&qedf->tasks, 0);
3510	task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3511	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3512		   "end=%p block_size=%u.\n", task_start, task_end,
3513		   qedf->tasks.size);
3514
3515	/*
3516	 * We need to write the number of BDs in the BDQ we've preallocated so
3517	 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3518	 * packet arrives.
3519	 */
3520	qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3521	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3522	    "Writing %d to primary and secondary BDQ doorbell registers.\n",
3523	    qedf->bdq_prod_idx);
3524	writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3525	readw(qedf->bdq_primary_prod);
3526	writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3527	readw(qedf->bdq_secondary_prod);
3528
3529	qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3530
3531	/* Now that the dev_info struct has been filled in set the MAC
3532	 * address
3533	 */
3534	ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3535	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3536		   qedf->mac);
3537
3538	/*
3539	 * Set the WWNN and WWPN in the following way:
3540	 *
3541	 * If the info we get from qed is non-zero then use that to set the
3542	 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3543	 * on the MAC address.
3544	 */
3545	if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3546		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3547		    "Setting WWPN and WWNN from qed dev_info.\n");
3548		qedf->wwnn = qedf->dev_info.wwnn;
3549		qedf->wwpn = qedf->dev_info.wwpn;
3550	} else {
3551		QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3552		    "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3553		qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3554		qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3555	}
3556	QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,  "WWNN=%016llx "
3557		   "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3558
3559	sprintf(host_buf, "host_%d", host->host_no);
3560	qed_ops->common->set_name(qedf->cdev, host_buf);
3561
3562	/* Allocate cmd mgr */
3563	qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3564	if (!qedf->cmd_mgr) {
3565		QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3566		rc = -ENOMEM;
3567		goto err5;
3568	}
3569
3570	if (mode != QEDF_MODE_RECOVERY) {
3571		host->transportt = qedf_fc_transport_template;
3572		host->max_lun = qedf_max_lun;
3573		host->max_cmd_len = QEDF_MAX_CDB_LEN;
3574		host->max_id = QEDF_MAX_SESSIONS;
3575		host->can_queue = FCOE_PARAMS_NUM_TASKS;
3576		rc = scsi_add_host(host, &pdev->dev);
3577		if (rc) {
3578			QEDF_WARN(&qedf->dbg_ctx,
3579				  "Error adding Scsi_Host rc=0x%x.\n", rc);
3580			goto err6;
3581		}
3582	}
3583
3584	memset(&params, 0, sizeof(params));
3585	params.mtu = QEDF_LL2_BUF_SIZE;
3586	ether_addr_copy(params.ll2_mac_address, qedf->mac);
3587
3588	/* Start LL2 processing thread */
3589	qedf->ll2_recv_wq = alloc_workqueue("qedf_%d_ll2",
3590					    WQ_MEM_RECLAIM | WQ_PERCPU, 1,
3591					    host->host_no);
3592	if (!qedf->ll2_recv_wq) {
3593		QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3594		rc = -ENOMEM;
3595		goto err7;
3596	}
3597
3598#ifdef CONFIG_DEBUG_FS
3599	qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3600			    qedf_dbg_fops);
3601#endif
3602
3603	/* Start LL2 */
3604	qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3605	rc = qed_ops->ll2->start(qedf->cdev, &params);
3606	if (rc) {
3607		QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3608		goto err7;
3609	}
3610	set_bit(QEDF_LL2_STARTED, &qedf->flags);
3611
3612	/* Set initial FIP/FCoE VLAN to NULL */
3613	qedf->vlan_id = 0;
3614
3615	/*
3616	 * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3617	 * they were not reaped during the unload process.
3618	 */
3619	if (mode != QEDF_MODE_RECOVERY) {
3620		/* Setup imbedded fcoe controller */
3621		qedf_fcoe_ctlr_setup(qedf);
3622
3623		/* Setup lport */
3624		rc = qedf_lport_setup(qedf);
3625		if (rc) {
3626			QEDF_ERR(&(qedf->dbg_ctx),
3627			    "qedf_lport_setup failed.\n");
3628			goto err7;
3629		}
3630	}
3631
3632	qedf->timer_work_queue = alloc_workqueue("qedf_%u_timer",
3633				WQ_MEM_RECLAIM | WQ_PERCPU, 1,
3634				qedf->lport->host->host_no);
3635	if (!qedf->timer_work_queue) {
3636		QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3637			  "workqueue.\n");
3638		rc = -ENOMEM;
3639		goto err7;
3640	}
3641
3642	/* DPC workqueue is not reaped during recovery unload */
3643	if (mode != QEDF_MODE_RECOVERY) {
3644		sprintf(host_buf, "qedf_%u_dpc",
3645		    qedf->lport->host->host_no);
3646		qedf->dpc_wq =
3647			alloc_workqueue("%s", WQ_MEM_RECLAIM | WQ_PERCPU, 1,
3648					host_buf);
3649	}
3650	INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
3651
3652	/*
3653	 * GRC dump and sysfs parameters are not reaped during the recovery
3654	 * unload process.
3655	 */
3656	if (mode != QEDF_MODE_RECOVERY) {
3657		qedf->grcdump_size =
3658		    qed_ops->common->dbg_all_data_size(qedf->cdev);
3659		if (qedf->grcdump_size) {
3660			rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3661			    qedf->grcdump_size);
3662			if (rc) {
3663				QEDF_ERR(&(qedf->dbg_ctx),
3664				    "GRC Dump buffer alloc failed.\n");
3665				qedf->grcdump = NULL;
3666			}
3667
3668			QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3669			    "grcdump: addr=%p, size=%u.\n",
3670			    qedf->grcdump, qedf->grcdump_size);
3671		}
3672		qedf_create_sysfs_ctx_attr(qedf);
3673
3674		/* Initialize I/O tracing for this adapter */
3675		spin_lock_init(&qedf->io_trace_lock);
3676		qedf->io_trace_idx = 0;
3677	}
3678
3679	init_completion(&qedf->flogi_compl);
3680
3681	status = qed_ops->common->update_drv_state(qedf->cdev, true);
3682	if (status)
3683		QEDF_ERR(&(qedf->dbg_ctx),
3684			"Failed to send drv state to MFW.\n");
3685
3686	memset(&link_params, 0, sizeof(struct qed_link_params));
3687	link_params.link_up = true;
3688	status = qed_ops->common->set_link(qedf->cdev, &link_params);
3689	if (status)
3690		QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3691
3692	/* Start/restart discovery */
3693	if (mode == QEDF_MODE_RECOVERY)
3694		fcoe_ctlr_link_up(&qedf->ctlr);
3695	else
3696		fc_fabric_login(lport);
3697
3698	QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3699
3700	clear_bit(QEDF_PROBING, &qedf->flags);
3701
3702	/* All good */
3703	return 0;
3704
3705err7:
3706	if (qedf->ll2_recv_wq)
3707		destroy_workqueue(qedf->ll2_recv_wq);
3708	fc_remove_host(qedf->lport->host);
3709	scsi_remove_host(qedf->lport->host);
3710#ifdef CONFIG_DEBUG_FS
3711	qedf_dbg_host_exit(&(qedf->dbg_ctx));
3712#endif
3713err6:
3714	qedf_cmd_mgr_free(qedf->cmd_mgr);
3715err5:
3716	qed_ops->stop(qedf->cdev);
3717err4:
3718	qedf_free_fcoe_pf_param(qedf);
3719	qedf_sync_free_irqs(qedf);
3720err3:
3721	qed_ops->common->slowpath_stop(qedf->cdev);
3722err2:
3723	qed_ops->common->remove(qedf->cdev);
3724err1:
3725	scsi_host_put(lport->host);
3726err0:
3727	return rc;
3728}
3729
3730static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3731{
3732	return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3733}
3734
3735static void __qedf_remove(struct pci_dev *pdev, int mode)
3736{
3737	struct qedf_ctx *qedf;
3738	int rc;
3739	int cnt = 0;
3740
3741	if (!pdev) {
3742		QEDF_ERR(NULL, "pdev is NULL.\n");
3743		return;
3744	}
3745
3746	qedf = pci_get_drvdata(pdev);
3747
3748	/*
3749	 * Prevent race where we're in board disable work and then try to
3750	 * rmmod the module.
3751	 */
3752	if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3753		QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3754		return;
3755	}
3756
3757stag_in_prog:
3758	if (test_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags)) {
3759		QEDF_ERR(&qedf->dbg_ctx, "Stag in progress, cnt=%d.\n", cnt);
3760		cnt++;
3761
3762		if (cnt < 5) {
3763			msleep(500);
3764			goto stag_in_prog;
3765		}
3766	}
3767
3768	if (mode != QEDF_MODE_RECOVERY)
3769		set_bit(QEDF_UNLOADING, &qedf->flags);
3770
3771	/* Logoff the fabric to upload all connections */
3772	if (mode == QEDF_MODE_RECOVERY)
3773		fcoe_ctlr_link_down(&qedf->ctlr);
3774	else
3775		fc_fabric_logoff(qedf->lport);
3776
3777	if (!qedf_wait_for_upload(qedf))
3778		QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3779
3780#ifdef CONFIG_DEBUG_FS
3781	qedf_dbg_host_exit(&(qedf->dbg_ctx));
3782#endif
3783
3784	/* Stop any link update handling */
3785	cancel_delayed_work_sync(&qedf->link_update);
3786	destroy_workqueue(qedf->link_update_wq);
3787	qedf->link_update_wq = NULL;
3788
3789	if (qedf->timer_work_queue)
3790		destroy_workqueue(qedf->timer_work_queue);
3791
3792	/* Stop Light L2 */
3793	clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3794	qed_ops->ll2->stop(qedf->cdev);
3795	if (qedf->ll2_recv_wq)
3796		destroy_workqueue(qedf->ll2_recv_wq);
3797
3798	/* Stop fastpath */
3799	qedf_sync_free_irqs(qedf);
3800	qedf_destroy_sb(qedf);
3801
3802	/*
3803	 * During recovery don't destroy OS constructs that represent the
3804	 * physical port.
3805	 */
3806	if (mode != QEDF_MODE_RECOVERY) {
3807		qedf_free_grc_dump_buf(&qedf->grcdump);
3808		qedf_remove_sysfs_ctx_attr(qedf);
3809
3810		/* Remove all SCSI/libfc/libfcoe structures */
3811		fcoe_ctlr_destroy(&qedf->ctlr);
3812		fc_lport_destroy(qedf->lport);
3813		fc_remove_host(qedf->lport->host);
3814		scsi_remove_host(qedf->lport->host);
3815	}
3816
3817	qedf_cmd_mgr_free(qedf->cmd_mgr);
3818
3819	if (mode != QEDF_MODE_RECOVERY) {
3820		fc_exch_mgr_free(qedf->lport);
3821		fc_lport_free_stats(qedf->lport);
3822
3823		/* Wait for all vports to be reaped */
3824		qedf_wait_for_vport_destroy(qedf);
3825	}
3826
3827	/*
3828	 * Now that all connections have been uploaded we can stop the
3829	 * rest of the qed operations
3830	 */
3831	qed_ops->stop(qedf->cdev);
3832
3833	if (mode != QEDF_MODE_RECOVERY) {
3834		if (qedf->dpc_wq) {
3835			/* Stop general DPC handling */
3836			destroy_workqueue(qedf->dpc_wq);
3837			qedf->dpc_wq = NULL;
3838		}
3839	}
3840
3841	/* Final shutdown for the board */
3842	qedf_free_fcoe_pf_param(qedf);
3843	if (mode != QEDF_MODE_RECOVERY) {
3844		qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3845		pci_set_drvdata(pdev, NULL);
3846	}
3847
3848	rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3849	if (rc)
3850		QEDF_ERR(&(qedf->dbg_ctx),
3851			"Failed to send drv state to MFW.\n");
3852
3853	if (mode != QEDF_MODE_RECOVERY && qedf->devlink) {
3854		qed_ops->common->devlink_unregister(qedf->devlink);
3855		qedf->devlink = NULL;
3856	}
3857
3858	qed_ops->common->slowpath_stop(qedf->cdev);
3859	qed_ops->common->remove(qedf->cdev);
3860
3861	mempool_destroy(qedf->io_mempool);
3862
3863	/* Only reap the Scsi_host on a real removal */
3864	if (mode != QEDF_MODE_RECOVERY)
3865		scsi_host_put(qedf->lport->host);
3866}
3867
3868static void qedf_remove(struct pci_dev *pdev)
3869{
3870	/* Check to make sure this function wasn't already disabled */
3871	if (!atomic_read(&pdev->enable_cnt))
3872		return;
3873
3874	__qedf_remove(pdev, QEDF_MODE_NORMAL);
3875}
3876
3877void qedf_wq_grcdump(struct work_struct *work)
3878{
3879	struct qedf_ctx *qedf =
3880	    container_of(work, struct qedf_ctx, grcdump_work.work);
3881
3882	QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3883	qedf_capture_grc_dump(qedf);
3884}
3885
3886void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
3887{
3888	struct qedf_ctx *qedf = dev;
3889
3890	QEDF_ERR(&(qedf->dbg_ctx),
3891			"Hardware error handler scheduled, event=%d.\n",
3892			err_type);
3893
3894	if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
3895		QEDF_ERR(&(qedf->dbg_ctx),
3896				"Already in recovery, not scheduling board disable work.\n");
3897		return;
3898	}
3899
3900	switch (err_type) {
3901	case QED_HW_ERR_FAN_FAIL:
3902		schedule_delayed_work(&qedf->board_disable_work, 0);
3903		break;
3904	case QED_HW_ERR_MFW_RESP_FAIL:
3905	case QED_HW_ERR_HW_ATTN:
3906	case QED_HW_ERR_DMAE_FAIL:
3907	case QED_HW_ERR_FW_ASSERT:
3908		/* Prevent HW attentions from being reasserted */
3909		qed_ops->common->attn_clr_enable(qedf->cdev, true);
3910		break;
3911	case QED_HW_ERR_RAMROD_FAIL:
3912		/* Prevent HW attentions from being reasserted */
3913		qed_ops->common->attn_clr_enable(qedf->cdev, true);
3914
3915		if (qedf_enable_recovery && qedf->devlink)
3916			qed_ops->common->report_fatal_error(qedf->devlink,
3917				err_type);
3918
3919		break;
3920	default:
3921		break;
3922	}
3923}
3924
3925/*
3926 * Protocol TLV handler
3927 */
3928void qedf_get_protocol_tlv_data(void *dev, void *data)
3929{
3930	struct qedf_ctx *qedf = dev;
3931	struct qed_mfw_tlv_fcoe *fcoe = data;
3932	struct fc_lport *lport;
3933	struct Scsi_Host *host;
3934	struct fc_host_attrs *fc_host;
3935	struct fc_host_statistics *hst;
3936
3937	if (!qedf) {
3938		QEDF_ERR(NULL, "qedf is null.\n");
3939		return;
3940	}
3941
3942	if (test_bit(QEDF_PROBING, &qedf->flags)) {
3943		QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
3944		return;
3945	}
3946
3947	lport = qedf->lport;
3948	host = lport->host;
3949	fc_host = shost_to_fc_host(host);
3950
3951	/* Force a refresh of the fc_host stats including offload stats */
3952	hst = qedf_fc_get_host_stats(host);
3953
3954	fcoe->qos_pri_set = true;
3955	fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3956
3957	fcoe->ra_tov_set = true;
3958	fcoe->ra_tov = lport->r_a_tov;
3959
3960	fcoe->ed_tov_set = true;
3961	fcoe->ed_tov = lport->e_d_tov;
3962
3963	fcoe->npiv_state_set = true;
3964	fcoe->npiv_state = 1; /* NPIV always enabled */
3965
3966	fcoe->num_npiv_ids_set = true;
3967	fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3968
3969	/* Certain attributes we only want to set if we've selected an FCF */
3970	if (qedf->ctlr.sel_fcf) {
3971		fcoe->switch_name_set = true;
3972		u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3973	}
3974
3975	fcoe->port_state_set = true;
3976	/* For qedf we're either link down or fabric attach */
3977	if (lport->link_up)
3978		fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3979	else
3980		fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3981
3982	fcoe->link_failures_set = true;
3983	fcoe->link_failures = (u16)hst->link_failure_count;
3984
3985	fcoe->fcoe_txq_depth_set = true;
3986	fcoe->fcoe_rxq_depth_set = true;
3987	fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3988	fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3989
3990	fcoe->fcoe_rx_frames_set = true;
3991	fcoe->fcoe_rx_frames = hst->rx_frames;
3992
3993	fcoe->fcoe_tx_frames_set = true;
3994	fcoe->fcoe_tx_frames = hst->tx_frames;
3995
3996	fcoe->fcoe_rx_bytes_set = true;
3997	fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3998
3999	fcoe->fcoe_tx_bytes_set = true;
4000	fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
4001
4002	fcoe->crc_count_set = true;
4003	fcoe->crc_count = hst->invalid_crc_count;
4004
4005	fcoe->tx_abts_set = true;
4006	fcoe->tx_abts = hst->fcp_packet_aborts;
4007
4008	fcoe->tx_lun_rst_set = true;
4009	fcoe->tx_lun_rst = qedf->lun_resets;
4010
4011	fcoe->abort_task_sets_set = true;
4012	fcoe->abort_task_sets = qedf->packet_aborts;
4013
4014	fcoe->scsi_busy_set = true;
4015	fcoe->scsi_busy = qedf->busy;
4016
4017	fcoe->scsi_tsk_full_set = true;
4018	fcoe->scsi_tsk_full = qedf->task_set_fulls;
4019}
4020
4021/* Deferred work function to perform soft context reset on STAG change */
4022void qedf_stag_change_work(struct work_struct *work)
4023{
4024	struct qedf_ctx *qedf =
4025	    container_of(work, struct qedf_ctx, stag_work.work);
4026
4027	if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
4028		QEDF_ERR(&qedf->dbg_ctx,
4029			 "Already is in recovery, hence not calling software context reset.\n");
4030		return;
4031	}
4032
4033	if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
4034		QEDF_ERR(&qedf->dbg_ctx, "Driver unloading\n");
4035		return;
4036	}
4037
4038	set_bit(QEDF_STAG_IN_PROGRESS, &qedf->flags);
4039
4040	printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset.",
4041			dev_name(&qedf->pdev->dev), __func__, __LINE__,
4042			qedf->dbg_ctx.host_no);
4043	qedf_ctx_soft_reset(qedf->lport);
4044}
4045
4046static void qedf_shutdown(struct pci_dev *pdev)
4047{
4048	__qedf_remove(pdev, QEDF_MODE_NORMAL);
4049}
4050
4051static int qedf_suspend(struct pci_dev *pdev, pm_message_t state)
4052{
4053	struct qedf_ctx *qedf;
4054
4055	if (!pdev) {
4056		QEDF_ERR(NULL, "pdev is NULL.\n");
4057		return -ENODEV;
4058	}
4059
4060	qedf = pci_get_drvdata(pdev);
4061
4062	QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n", __func__);
4063
4064	return -EPERM;
4065}
4066
4067/*
4068 * Recovery handler code
4069 */
4070static void qedf_schedule_recovery_handler(void *dev)
4071{
4072	struct qedf_ctx *qedf = dev;
4073
4074	QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
4075	schedule_delayed_work(&qedf->recovery_work, 0);
4076}
4077
4078static void qedf_recovery_handler(struct work_struct *work)
4079{
4080	struct qedf_ctx *qedf =
4081	    container_of(work, struct qedf_ctx, recovery_work.work);
4082
4083	if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
4084		return;
4085
4086	/*
4087	 * Call common_ops->recovery_prolog to allow the MFW to quiesce
4088	 * any PCI transactions.
4089	 */
4090	qed_ops->common->recovery_prolog(qedf->cdev);
4091
4092	QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
4093	__qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
4094	/*
4095	 * Reset link and dcbx to down state since we will not get a link down
4096	 * event from the MFW but calling __qedf_remove will essentially be a
4097	 * link down event.
4098	 */
4099	atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
4100	atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
4101	__qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
4102	clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
4103	QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
4104}
4105
4106/* Generic TLV data callback */
4107void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
4108{
4109	struct qedf_ctx *qedf;
4110
4111	if (!dev) {
4112		QEDF_INFO(NULL, QEDF_LOG_EVT,
4113			  "dev is NULL so ignoring get_generic_tlv_data request.\n");
4114		return;
4115	}
4116	qedf = (struct qedf_ctx *)dev;
4117
4118	memset(data, 0, sizeof(struct qed_generic_tlvs));
4119	ether_addr_copy(data->mac[0], qedf->mac);
4120}
4121
4122/*
4123 * Module Init/Remove
4124 */
4125
4126static int __init qedf_init(void)
4127{
4128	int ret;
4129
4130	/* If debug=1 passed, set the default log mask */
4131	if (qedf_debug == QEDF_LOG_DEFAULT)
4132		qedf_debug = QEDF_DEFAULT_LOG_MASK;
4133
4134	/*
4135	 * Check that default prio for FIP/FCoE traffic is between 0..7 if a
4136	 * value has been set
4137	 */
4138	if (qedf_default_prio > -1)
4139		if (qedf_default_prio > 7) {
4140			qedf_default_prio = QEDF_DEFAULT_PRIO;
4141			QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
4142			    QEDF_DEFAULT_PRIO);
4143		}
4144
4145	/* Print driver banner */
4146	QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
4147		   QEDF_VERSION);
4148
4149	/* Create kmem_cache for qedf_io_work structs */
4150	qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
4151	    sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
4152	if (qedf_io_work_cache == NULL) {
4153		QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
4154		goto err1;
4155	}
4156	QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
4157	    qedf_io_work_cache);
4158
4159	qed_ops = qed_get_fcoe_ops();
4160	if (!qed_ops) {
4161		QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
4162		goto err1;
4163	}
4164
4165#ifdef CONFIG_DEBUG_FS
4166	qedf_dbg_init("qedf");
4167#endif
4168
4169	qedf_fc_transport_template =
4170	    fc_attach_transport(&qedf_fc_transport_fn);
4171	if (!qedf_fc_transport_template) {
4172		QEDF_ERR(NULL, "Could not register with FC transport\n");
4173		goto err2;
4174	}
4175
4176	qedf_fc_vport_transport_template =
4177		fc_attach_transport(&qedf_fc_vport_transport_fn);
4178	if (!qedf_fc_vport_transport_template) {
4179		QEDF_ERR(NULL, "Could not register vport template with FC "
4180			  "transport\n");
4181		goto err3;
4182	}
4183
4184	qedf_io_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM | WQ_PERCPU, 1,
4185				     "qedf_io_wq");
4186	if (!qedf_io_wq) {
4187		QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
4188		goto err4;
4189	}
4190
4191	qedf_cb_ops.get_login_failures = qedf_get_login_failures;
4192
4193	ret = pci_register_driver(&qedf_pci_driver);
4194	if (ret) {
4195		QEDF_ERR(NULL, "Failed to register driver\n");
4196		goto err5;
4197	}
4198
4199	return 0;
4200
4201err5:
4202	destroy_workqueue(qedf_io_wq);
4203err4:
4204	fc_release_transport(qedf_fc_vport_transport_template);
4205err3:
4206	fc_release_transport(qedf_fc_transport_template);
4207err2:
4208#ifdef CONFIG_DEBUG_FS
4209	qedf_dbg_exit();
4210#endif
4211	qed_put_fcoe_ops();
4212err1:
4213	return -EINVAL;
4214}
4215
4216static void __exit qedf_cleanup(void)
4217{
4218	pci_unregister_driver(&qedf_pci_driver);
4219
4220	destroy_workqueue(qedf_io_wq);
4221
4222	fc_release_transport(qedf_fc_vport_transport_template);
4223	fc_release_transport(qedf_fc_transport_template);
4224#ifdef CONFIG_DEBUG_FS
4225	qedf_dbg_exit();
4226#endif
4227	qed_put_fcoe_ops();
4228
4229	kmem_cache_destroy(qedf_io_work_cache);
4230}
4231
4232MODULE_LICENSE("GPL");
4233MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
4234MODULE_AUTHOR("QLogic Corporation");
4235MODULE_VERSION(QEDF_VERSION);
4236module_init(qedf_init);
4237module_exit(qedf_cleanup);