1 // SPDX-License-Identifier: GPL-2.0-only
3 * QLogic FCoE Offload Driver
4 * Copyright (c) 2016-2018 Cavium Inc.
6 #include <linux/init.h>
7 #include <linux/kernel.h>
8 #include <linux/module.h>
10 #include <linux/device.h>
11 #include <linux/highmem.h>
12 #include <linux/crc32.h>
13 #include <linux/interrupt.h>
14 #include <linux/list.h>
15 #include <linux/kthread.h>
16 #include <scsi/libfc.h>
17 #include <scsi/scsi_host.h>
18 #include <scsi/fc_frame.h>
19 #include <linux/if_ether.h>
20 #include <linux/if_vlan.h>
21 #include <linux/cpu.h>
24 #include <uapi/linux/pci_regs.h>
26 const struct qed_fcoe_ops *qed_ops;
28 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
29 static void qedf_remove(struct pci_dev *pdev);
32 * Driver module parameters.
34 static unsigned int qedf_dev_loss_tmo = 60;
35 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
36 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached "
37 "remote ports (default 60)");
39 uint qedf_debug = QEDF_LOG_INFO;
40 module_param_named(debug, qedf_debug, uint, S_IRUGO);
41 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
44 static uint qedf_fipvlan_retries = 60;
45 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
46 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
47 "before giving up (default 60)");
49 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
50 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
51 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
54 static int qedf_default_prio = -1;
55 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
56 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
57 " traffic (value between 0 and 7, default 3).");
59 uint qedf_dump_frames;
60 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
61 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
64 static uint qedf_queue_depth;
65 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
66 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
67 "by the qedf driver. Default is 0 (use OS default).");
70 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
71 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
72 "into trace buffer. (default off).");
74 static uint qedf_max_lun = MAX_FIBRE_LUNS;
75 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
76 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
77 "supports. (default 0xffffffff)");
79 uint qedf_link_down_tmo;
80 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
81 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
82 "link is down by N seconds.");
84 bool qedf_retry_delay;
85 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
86 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
87 "delay handling (default off).");
89 static bool qedf_dcbx_no_wait;
90 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
91 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
92 "sending FIP VLAN requests on link up (Default: off).");
94 static uint qedf_dp_module;
95 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
96 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
97 "qed module during probe.");
99 static uint qedf_dp_level = QED_LEVEL_NOTICE;
100 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
101 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module "
102 "during probe (0-3: 0 more verbose).");
104 struct workqueue_struct *qedf_io_wq;
106 static struct fcoe_percpu_s qedf_global;
107 static DEFINE_SPINLOCK(qedf_global_lock);
109 static struct kmem_cache *qedf_io_work_cache;
111 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
113 qedf->vlan_id = vlan_id;
114 qedf->vlan_id |= qedf->prio << VLAN_PRIO_SHIFT;
115 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x "
116 "prio=%d.\n", vlan_id, qedf->prio);
119 /* Returns true if we have a valid vlan, false otherwise */
120 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
124 while (qedf->fipvlan_retries--) {
125 /* This is to catch if link goes down during fipvlan retries */
126 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
127 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
131 if (qedf->vlan_id > 0)
134 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
135 "Retry %d.\n", qedf->fipvlan_retries);
136 init_completion(&qedf->fipvlan_compl);
137 qedf_fcoe_send_vlan_req(qedf);
138 rc = wait_for_completion_timeout(&qedf->fipvlan_compl,
141 (atomic_read(&qedf->link_state) == QEDF_LINK_UP)) {
142 fcoe_ctlr_link_up(&qedf->ctlr);
150 static void qedf_handle_link_update(struct work_struct *work)
152 struct qedf_ctx *qedf =
153 container_of(work, struct qedf_ctx, link_update.work);
156 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
157 atomic_read(&qedf->link_state));
159 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
160 rc = qedf_initiate_fipvlan_req(qedf);
164 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
170 * If we get here then we never received a repsonse to our
171 * fip vlan request so set the vlan_id to the default and
172 * tell FCoE that the link is up
174 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
175 "response, falling back to default VLAN %d.\n",
177 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
180 * Zero out data_src_addr so we'll update it with the new
183 eth_zero_addr(qedf->data_src_addr);
184 fcoe_ctlr_link_up(&qedf->ctlr);
185 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
187 * If we hit here and link_down_tmo_valid is still 1 it means
188 * that link_down_tmo timed out so set it to 0 to make sure any
189 * other readers have accurate state.
191 atomic_set(&qedf->link_down_tmo_valid, 0);
192 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
193 "Calling fcoe_ctlr_link_down().\n");
194 fcoe_ctlr_link_down(&qedf->ctlr);
195 if (qedf_wait_for_upload(qedf) == false)
196 QEDF_ERR(&qedf->dbg_ctx,
197 "Could not upload all sessions.\n");
198 /* Reset the number of FIP VLAN retries */
199 qedf->fipvlan_retries = qedf_fipvlan_retries;
203 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1
204 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2
205 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3
206 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
209 struct fc_frame_header *fh = fc_frame_header_get(fp);
213 /* Get granted MAC address from FIP FLOGI payload */
214 granted_mac = fr_cb(fp)->granted_mac;
217 * We set the source MAC for FCoE traffic based on the Granted MAC
218 * address from the switch.
220 * If granted_mac is non-zero, we used that.
221 * If the granted_mac is zeroed out, created the FCoE MAC based on
222 * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
223 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
224 * d_id of the FLOGI frame.
226 if (!is_zero_ether_addr(granted_mac)) {
227 ether_addr_copy(qedf->data_src_addr, granted_mac);
228 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
229 } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
230 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
231 qedf->data_src_addr[0] = fc_map[0];
232 qedf->data_src_addr[1] = fc_map[1];
233 qedf->data_src_addr[2] = fc_map[2];
234 qedf->data_src_addr[3] = fh->fh_d_id[0];
235 qedf->data_src_addr[4] = fh->fh_d_id[1];
236 qedf->data_src_addr[5] = fh->fh_d_id[2];
237 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
239 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
240 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
243 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
244 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
247 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
250 struct fc_exch *exch = fc_seq_exch(seq);
251 struct fc_lport *lport = exch->lp;
252 struct qedf_ctx *qedf = lport_priv(lport);
255 QEDF_ERR(NULL, "qedf is NULL.\n");
260 * If ERR_PTR is set then don't try to stat anything as it will cause
261 * a crash when we access fp.
264 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
265 "fp has IS_ERR() set.\n");
269 /* Log stats for FLOGI reject */
270 if (fc_frame_payload_op(fp) == ELS_LS_RJT)
271 qedf->flogi_failed++;
272 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
273 /* Set the source MAC we will use for FCoE traffic */
274 qedf_set_data_src_addr(qedf, fp);
277 /* Complete flogi_compl so we can proceed to sending ADISCs */
278 complete(&qedf->flogi_compl);
281 /* Report response to libfc */
282 fc_lport_flogi_resp(seq, fp, lport);
285 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
286 struct fc_frame *fp, unsigned int op,
287 void (*resp)(struct fc_seq *,
290 void *arg, u32 timeout)
292 struct qedf_ctx *qedf = lport_priv(lport);
295 * Intercept FLOGI for statistic purposes. Note we use the resp
296 * callback to tell if this is really a flogi.
298 if (resp == fc_lport_flogi_resp) {
300 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
304 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
307 int qedf_send_flogi(struct qedf_ctx *qedf)
309 struct fc_lport *lport;
314 if (!lport->tt.elsct_send)
317 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
319 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
323 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
324 "Sending FLOGI to reestablish session with switch.\n");
325 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
326 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
328 init_completion(&qedf->flogi_compl);
333 struct qedf_tmp_rdata_item {
334 struct fc_rport_priv *rdata;
335 struct list_head list;
339 * This function is called if link_down_tmo is in use. If we get a link up and
340 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
341 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up().
343 static void qedf_link_recovery(struct work_struct *work)
345 struct qedf_ctx *qedf =
346 container_of(work, struct qedf_ctx, link_recovery.work);
347 struct qedf_rport *fcport;
348 struct fc_rport_priv *rdata;
349 struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item;
353 struct list_head rdata_login_list;
355 INIT_LIST_HEAD(&rdata_login_list);
357 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
358 "Link down tmo did not expire.\n");
361 * Essentially reset the fcoe_ctlr here without affecting the state
362 * of the libfc structs.
364 qedf->ctlr.state = FIP_ST_LINK_WAIT;
365 fcoe_ctlr_link_down(&qedf->ctlr);
368 * Bring the link up before we send the fipvlan request so libfcoe
369 * can select a new fcf in parallel
371 fcoe_ctlr_link_up(&qedf->ctlr);
373 /* Since the link when down and up to verify which vlan we're on */
374 qedf->fipvlan_retries = qedf_fipvlan_retries;
375 rc = qedf_initiate_fipvlan_req(qedf);
376 /* If getting the VLAN fails, set the VLAN to the fallback one */
378 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
381 * We need to wait for an FCF to be selected due to the
382 * fcoe_ctlr_link_up other the FLOGI will be rejected.
384 while (retries > 0) {
385 if (qedf->ctlr.sel_fcf) {
386 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
387 "FCF reselected, proceeding with FLOGI.\n");
395 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
400 rval = qedf_send_flogi(qedf);
404 /* Wait for FLOGI completion before proceeding with sending ADISCs */
405 i = wait_for_completion_timeout(&qedf->flogi_compl,
406 qedf->lport->r_a_tov);
408 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
413 * Call lport->tt.rport_login which will cause libfc to send an
414 * ADISC since the rport is in state ready.
417 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
418 rdata = fcport->rdata;
421 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item),
425 if (kref_get_unless_zero(&rdata->kref)) {
426 rdata_item->rdata = rdata;
427 list_add(&rdata_item->list, &rdata_login_list);
433 * Do the fc_rport_login outside of the rcu lock so we don't take a
434 * mutex in an atomic context.
436 list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list,
438 list_del(&rdata_item->list);
439 fc_rport_login(rdata_item->rdata);
440 kref_put(&rdata_item->rdata->kref, fc_rport_destroy);
445 static void qedf_update_link_speed(struct qedf_ctx *qedf,
446 struct qed_link_output *link)
448 struct fc_lport *lport = qedf->lport;
450 lport->link_speed = FC_PORTSPEED_UNKNOWN;
451 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
453 /* Set fc_host link speed */
454 switch (link->speed) {
456 lport->link_speed = FC_PORTSPEED_10GBIT;
459 lport->link_speed = FC_PORTSPEED_25GBIT;
462 lport->link_speed = FC_PORTSPEED_40GBIT;
465 lport->link_speed = FC_PORTSPEED_50GBIT;
468 lport->link_speed = FC_PORTSPEED_100GBIT;
471 lport->link_speed = FC_PORTSPEED_UNKNOWN;
476 * Set supported link speed by querying the supported
477 * capabilities of the link.
479 if (link->supported_caps & SUPPORTED_10000baseKR_Full)
480 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
481 if (link->supported_caps & SUPPORTED_25000baseKR_Full)
482 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
483 if (link->supported_caps & SUPPORTED_40000baseLR4_Full)
484 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
485 if (link->supported_caps & SUPPORTED_50000baseKR2_Full)
486 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
487 if (link->supported_caps & SUPPORTED_100000baseKR4_Full)
488 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
489 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
492 static void qedf_link_update(void *dev, struct qed_link_output *link)
494 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
497 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
498 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
499 "Ignoring link up event as link is already up.\n");
502 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
505 /* Cancel any pending link down work */
506 cancel_delayed_work(&qedf->link_update);
508 atomic_set(&qedf->link_state, QEDF_LINK_UP);
509 qedf_update_link_speed(qedf, link);
511 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
513 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
515 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
516 queue_delayed_work(qedf->link_update_wq,
517 &qedf->link_recovery, 0);
519 queue_delayed_work(qedf->link_update_wq,
520 &qedf->link_update, 0);
521 atomic_set(&qedf->link_down_tmo_valid, 0);
525 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
527 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
528 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
530 * Flag that we're waiting for the link to come back up before
531 * informing the fcoe layer of the event.
533 if (qedf_link_down_tmo > 0) {
534 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
535 "Starting link down tmo.\n");
536 atomic_set(&qedf->link_down_tmo_valid, 1);
539 qedf_update_link_speed(qedf, link);
540 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
541 qedf_link_down_tmo * HZ);
546 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
548 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
551 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
552 "prio=%d.\n", get->operational.valid, get->operational.enabled,
553 get->operational.app_prio.fcoe);
555 if (get->operational.enabled && get->operational.valid) {
556 /* If DCBX was already negotiated on link up then just exit */
557 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
558 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
559 "DCBX already set on link up.\n");
563 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
566 * Set the 8021q priority in the following manner:
568 * 1. If a modparam is set use that
569 * 2. If the value is not between 0..7 use the default
570 * 3. Use the priority we get from the DCBX app tag
572 tmp_prio = get->operational.app_prio.fcoe;
573 if (qedf_default_prio > -1)
574 qedf->prio = qedf_default_prio;
575 else if (tmp_prio < 0 || tmp_prio > 7) {
576 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
577 "FIP/FCoE prio %d out of range, setting to %d.\n",
578 tmp_prio, QEDF_DEFAULT_PRIO);
579 qedf->prio = QEDF_DEFAULT_PRIO;
581 qedf->prio = tmp_prio;
583 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
584 !qedf_dcbx_no_wait) {
585 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
586 queue_delayed_work(qedf->link_update_wq,
587 &qedf->link_recovery, 0);
589 queue_delayed_work(qedf->link_update_wq,
590 &qedf->link_update, 0);
591 atomic_set(&qedf->link_down_tmo_valid, 0);
597 static u32 qedf_get_login_failures(void *cookie)
599 struct qedf_ctx *qedf;
601 qedf = (struct qedf_ctx *)cookie;
602 return qedf->flogi_failed;
605 static struct qed_fcoe_cb_ops qedf_cb_ops = {
607 .link_update = qedf_link_update,
608 .dcbx_aen = qedf_dcbx_handler,
609 .get_generic_tlv_data = qedf_get_generic_tlv_data,
610 .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
615 * Various transport templates.
618 static struct scsi_transport_template *qedf_fc_transport_template;
619 static struct scsi_transport_template *qedf_fc_vport_transport_template;
624 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
626 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
627 struct fc_lport *lport;
628 struct qedf_ctx *qedf;
629 struct qedf_ioreq *io_req;
630 struct fc_rport_libfc_priv *rp = rport->dd_data;
631 struct fc_rport_priv *rdata;
632 struct qedf_rport *fcport = NULL;
634 int wait_count = 100;
639 lport = shost_priv(sc_cmd->device->host);
640 qedf = (struct qedf_ctx *)lport_priv(lport);
642 /* rport and tgt are allocated together, so tgt should be non-NULL */
643 fcport = (struct qedf_rport *)&rp[1];
644 rdata = fcport->rdata;
645 if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
646 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
652 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
654 QEDF_ERR(&qedf->dbg_ctx,
655 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
656 sc_cmd, sc_cmd->cmnd[0],
659 goto drop_rdata_kref;
662 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
666 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
667 if (!rval || io_req->sc_cmd != sc_cmd) {
668 QEDF_ERR(&qedf->dbg_ctx,
669 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
670 io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
672 goto drop_rdata_kref;
675 if (fc_remote_port_chkready(rport)) {
676 refcount = kref_read(&io_req->refcount);
677 QEDF_ERR(&qedf->dbg_ctx,
678 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
679 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
680 refcount, rdata->ids.port_id);
682 goto drop_rdata_kref;
685 rc = fc_block_scsi_eh(sc_cmd);
687 goto drop_rdata_kref;
689 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
690 QEDF_ERR(&qedf->dbg_ctx,
691 "Connection uploading, xid=0x%x., port_id=%06x\n",
692 io_req->xid, rdata->ids.port_id);
693 while (io_req->sc_cmd && (wait_count != 0)) {
698 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
701 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
704 goto drop_rdata_kref;
707 if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
708 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
709 goto drop_rdata_kref;
712 QEDF_ERR(&qedf->dbg_ctx,
713 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
714 io_req, sc_cmd, io_req->xid, io_req->fp_idx,
717 if (qedf->stop_io_on_error) {
718 qedf_stop_all_io(qedf);
720 goto drop_rdata_kref;
723 init_completion(&io_req->abts_done);
724 rval = qedf_initiate_abts(io_req, true);
726 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
728 * If we fail to queue the ABTS then return this command to
729 * the SCSI layer as it will own and free the xid
732 qedf_scsi_done(qedf, io_req, DID_ERROR);
733 goto drop_rdata_kref;
736 wait_for_completion(&io_req->abts_done);
738 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
739 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
740 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
742 * If we get a reponse to the abort this is success from
743 * the perspective that all references to the command have
744 * been removed from the driver and firmware
748 /* If the abort and cleanup failed then return a failure */
753 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
756 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
760 kref_put(&rdata->kref, fc_rport_destroy);
763 kref_put(&io_req->refcount, qedf_release_cmd);
767 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
769 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
770 sc_cmd->device->host->host_no, sc_cmd->device->id,
771 sc_cmd->device->lun);
772 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
775 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
777 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
778 sc_cmd->device->host->host_no, sc_cmd->device->id,
779 sc_cmd->device->lun);
780 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
783 bool qedf_wait_for_upload(struct qedf_ctx *qedf)
785 struct qedf_rport *fcport = NULL;
789 if (atomic_read(&qedf->num_offloads))
790 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
791 "Waiting for all uploads to complete num_offloads = 0x%x.\n",
792 atomic_read(&qedf->num_offloads));
799 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
800 if (fcport && test_bit(QEDF_RPORT_SESSION_READY,
803 QEDF_ERR(&qedf->dbg_ctx,
804 "Waiting for fcport %p portid=%06x.\n",
805 fcport, fcport->rdata->ids.port_id);
807 QEDF_ERR(&qedf->dbg_ctx,
808 "Waiting for fcport %p.\n", fcport);
816 /* Performs soft reset of qedf_ctx by simulating a link down/up */
817 void qedf_ctx_soft_reset(struct fc_lport *lport)
819 struct qedf_ctx *qedf;
820 struct qed_link_output if_link;
823 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
827 qedf = lport_priv(lport);
829 /* For host reset, essentially do a soft link up/down */
830 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
831 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
832 "Queuing link down work.\n");
833 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
836 if (qedf_wait_for_upload(qedf) == false) {
837 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
838 WARN_ON(atomic_read(&qedf->num_offloads));
841 /* Before setting link up query physical link state */
842 qed_ops->common->get_link(qedf->cdev, &if_link);
843 /* Bail if the physical link is not up */
844 if (!if_link.link_up) {
845 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
846 "Physical link is not up.\n");
849 /* Flush and wait to make sure link down is processed */
850 flush_delayed_work(&qedf->link_update);
853 atomic_set(&qedf->link_state, QEDF_LINK_UP);
855 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
856 "Queue link up work.\n");
857 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
861 /* Reset the host by gracefully logging out and then logging back in */
862 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
864 struct fc_lport *lport;
865 struct qedf_ctx *qedf;
867 lport = shost_priv(sc_cmd->device->host);
868 qedf = lport_priv(lport);
870 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
871 test_bit(QEDF_UNLOADING, &qedf->flags))
874 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
876 qedf_ctx_soft_reset(lport);
881 static int qedf_slave_configure(struct scsi_device *sdev)
883 if (qedf_queue_depth) {
884 scsi_change_queue_depth(sdev, qedf_queue_depth);
890 static struct scsi_host_template qedf_host_template = {
891 .module = THIS_MODULE,
892 .name = QEDF_MODULE_NAME,
895 .max_sectors = 0xffff,
896 .queuecommand = qedf_queuecommand,
897 .shost_attrs = qedf_host_attrs,
898 .eh_abort_handler = qedf_eh_abort,
899 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
900 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
901 .eh_host_reset_handler = qedf_eh_host_reset,
902 .slave_configure = qedf_slave_configure,
903 .dma_boundary = QED_HW_DMA_BOUNDARY,
904 .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
905 .can_queue = FCOE_PARAMS_NUM_TASKS,
906 .change_queue_depth = scsi_change_queue_depth,
909 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
913 spin_lock(&qedf_global_lock);
914 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
915 spin_unlock(&qedf_global_lock);
920 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
922 struct qedf_rport *fcport;
923 struct fc_rport_priv *rdata;
926 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
927 rdata = fcport->rdata;
930 if (rdata->ids.port_id == port_id) {
937 /* Return NULL to caller to let them know fcport was not found */
941 /* Transmits an ELS frame over an offloaded session */
942 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
944 struct fc_frame_header *fh;
947 fh = fc_frame_header_get(fp);
948 if ((fh->fh_type == FC_TYPE_ELS) &&
949 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
950 switch (fc_frame_payload_op(fp)) {
952 qedf_send_adisc(fcport, fp);
962 * qedf_xmit - qedf FCoE frame transmit function
965 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
967 struct fc_lport *base_lport;
968 struct qedf_ctx *qedf;
970 struct fcoe_crc_eof *cp;
972 struct fc_frame_header *fh;
976 unsigned int hlen, tlen, elen;
978 struct fc_stats *stats;
979 struct fc_lport *tmp_lport;
980 struct fc_lport *vn_port = NULL;
981 struct qedf_rport *fcport;
985 qedf = (struct qedf_ctx *)lport_priv(lport);
987 fh = fc_frame_header_get(fp);
990 /* Filter out traffic to other NPIV ports on the same host */
992 base_lport = shost_priv(vport_to_shost(lport->vport));
996 /* Flag if the destination is the base port */
997 if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
998 vn_port = base_lport;
1000 /* Got through the list of vports attached to the base_lport
1001 * and see if we have a match with the destination address.
1003 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
1004 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
1005 vn_port = tmp_lport;
1010 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
1011 struct fc_rport_priv *rdata = NULL;
1013 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
1014 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
1016 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
1018 rdata->retries = lport->max_rport_retry_count;
1019 kref_put(&rdata->kref, fc_rport_destroy);
1023 /* End NPIV filtering */
1025 if (!qedf->ctlr.sel_fcf) {
1030 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
1031 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
1036 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
1037 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
1042 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1043 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
1047 /* Check to see if this needs to be sent on an offloaded session */
1048 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
1050 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1051 rc = qedf_xmit_l2_frame(fcport, fp);
1053 * If the frame was successfully sent over the middle path
1054 * then do not try to also send it over the LL2 path
1063 elen = sizeof(struct ethhdr);
1064 hlen = sizeof(struct fcoe_hdr);
1065 tlen = sizeof(struct fcoe_crc_eof);
1066 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
1068 skb->ip_summed = CHECKSUM_NONE;
1069 crc = fcoe_fc_crc(fp);
1071 /* copy port crc and eof to the skb buff */
1072 if (skb_is_nonlinear(skb)) {
1075 if (qedf_get_paged_crc_eof(skb, tlen)) {
1079 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
1080 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
1082 cp = skb_put(skb, tlen);
1085 memset(cp, 0, sizeof(*cp));
1087 cp->fcoe_crc32 = cpu_to_le32(~crc);
1088 if (skb_is_nonlinear(skb)) {
1094 /* adjust skb network/transport offsets to match mac/fcoe/port */
1095 skb_push(skb, elen + hlen);
1096 skb_reset_mac_header(skb);
1097 skb_reset_network_header(skb);
1098 skb->mac_len = elen;
1099 skb->protocol = htons(ETH_P_FCOE);
1102 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
1103 * for FIP/FCoE traffic.
1105 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
1107 /* fill up mac and fcoe headers */
1109 eh->h_proto = htons(ETH_P_FCOE);
1110 if (qedf->ctlr.map_dest)
1111 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1113 /* insert GW address */
1114 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1116 /* Set the source MAC address */
1117 ether_addr_copy(eh->h_source, qedf->data_src_addr);
1119 hp = (struct fcoe_hdr *)(eh + 1);
1120 memset(hp, 0, sizeof(*hp));
1122 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1125 /*update tx stats */
1126 stats = per_cpu_ptr(lport->stats, get_cpu());
1128 stats->TxWords += wlen;
1131 /* Get VLAN ID from skb for printing purposes */
1132 __vlan_hwaccel_get_tag(skb, &vlan_tci);
1134 /* send down to lld */
1136 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1137 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1138 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1140 if (qedf_dump_frames)
1141 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1142 1, skb->data, skb->len, false);
1143 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1145 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1153 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1160 /* Calculate appropriate queue and PBL sizes */
1161 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1162 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1163 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1165 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1167 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1168 &fcport->sq_dma, GFP_KERNEL);
1170 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1175 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1176 fcport->sq_pbl_size,
1177 &fcport->sq_pbl_dma, GFP_KERNEL);
1178 if (!fcport->sq_pbl) {
1179 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1185 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1186 page = fcport->sq_dma;
1187 pbl = (u32 *)fcport->sq_pbl;
1189 while (num_pages--) {
1190 *pbl = U64_LO(page);
1192 *pbl = U64_HI(page);
1194 page += QEDF_PAGE_SIZE;
1200 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1206 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1209 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1210 fcport->sq_pbl, fcport->sq_pbl_dma);
1212 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1213 fcport->sq, fcport->sq_dma);
1216 static int qedf_offload_connection(struct qedf_ctx *qedf,
1217 struct qedf_rport *fcport)
1219 struct qed_fcoe_params_offload conn_info;
1222 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1224 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1225 "portid=%06x.\n", fcport->rdata->ids.port_id);
1226 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1227 &fcport->fw_cid, &fcport->p_doorbell);
1229 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1230 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1231 rval = 1; /* For some reason qed returns 0 on failure here */
1235 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1236 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1237 fcport->fw_cid, fcport->handle);
1239 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1241 /* Fill in the offload connection info */
1242 conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1244 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1245 conn_info.sq_next_page_addr =
1246 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1248 /* Need to use our FCoE MAC for the offload session */
1249 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1251 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1253 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1254 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1255 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1256 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1259 conn_info.vlan_tag = qedf->vlan_id <<
1260 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1261 conn_info.vlan_tag |=
1262 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1263 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1264 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1266 /* Set host port source id */
1267 port_id = fc_host_port_id(qedf->lport->host);
1268 fcport->sid = port_id;
1269 conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1270 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1271 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1273 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1275 /* Set remote port destination id */
1276 port_id = fcport->rdata->rport->port_id;
1277 conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1278 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1279 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1281 conn_info.def_q_idx = 0; /* Default index for send queue? */
1283 /* Set FC-TAPE specific flags if needed */
1284 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1285 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1286 "Enable CONF, REC for portid=%06x.\n",
1287 fcport->rdata->ids.port_id);
1288 conn_info.flags |= 1 <<
1289 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1291 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1292 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1295 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1297 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1298 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1301 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1302 "succeeded portid=%06x total_sqe=%d.\n",
1303 fcport->rdata->ids.port_id, total_sqe);
1305 spin_lock_init(&fcport->rport_lock);
1306 atomic_set(&fcport->free_sqes, total_sqe);
1309 qed_ops->release_conn(qedf->cdev, fcport->handle);
1314 #define QEDF_TERM_BUFF_SIZE 10
1315 static void qedf_upload_connection(struct qedf_ctx *qedf,
1316 struct qedf_rport *fcport)
1319 dma_addr_t term_params_dma;
1321 /* Term params needs to be a DMA coherent buffer as qed shared the
1322 * physical DMA address with the firmware. The buffer may be used in
1323 * the receive path so we may eventually have to move this.
1325 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1326 &term_params_dma, GFP_KERNEL);
1328 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1329 "port_id=%06x.\n", fcport->rdata->ids.port_id);
1331 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1332 qed_ops->release_conn(qedf->cdev, fcport->handle);
1334 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1338 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1339 struct qedf_rport *fcport)
1341 struct fc_rport_priv *rdata = fcport->rdata;
1343 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1344 fcport->rdata->ids.port_id);
1346 /* Flush any remaining i/o's before we upload the connection */
1347 qedf_flush_active_ios(fcport, -1);
1349 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1350 qedf_upload_connection(qedf, fcport);
1351 qedf_free_sq(qedf, fcport);
1352 fcport->rdata = NULL;
1353 fcport->qedf = NULL;
1354 kref_put(&rdata->kref, fc_rport_destroy);
1358 * This event_callback is called after successful completion of libfc
1359 * initiated target login. qedf can proceed with initiating the session
1362 static void qedf_rport_event_handler(struct fc_lport *lport,
1363 struct fc_rport_priv *rdata,
1364 enum fc_rport_event event)
1366 struct qedf_ctx *qedf = lport_priv(lport);
1367 struct fc_rport *rport = rdata->rport;
1368 struct fc_rport_libfc_priv *rp;
1369 struct qedf_rport *fcport;
1372 unsigned long flags;
1374 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1375 "port_id = 0x%x\n", event, rdata->ids.port_id);
1378 case RPORT_EV_READY:
1380 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1384 rp = rport->dd_data;
1385 fcport = (struct qedf_rport *)&rp[1];
1386 fcport->qedf = qedf;
1388 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1389 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1390 "portid=0x%x as max number of offloaded sessions "
1391 "reached.\n", rdata->ids.port_id);
1396 * Don't try to offload the session again. Can happen when we
1399 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1400 QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1401 "offloaded, portid=0x%x.\n",
1402 rdata->ids.port_id);
1406 if (rport->port_id == FC_FID_DIR_SERV) {
1408 * qedf_rport structure doesn't exist for
1410 * We should not come here, as lport will
1411 * take care of fabric login
1413 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1414 "exist for dir server port_id=%x\n",
1415 rdata->ids.port_id);
1419 if (rdata->spp_type != FC_TYPE_FCP) {
1420 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1421 "Not offloading since spp type isn't FCP\n");
1424 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1425 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1426 "Not FCP target so not offloading\n");
1430 /* Initial reference held on entry, so this can't fail */
1431 kref_get(&rdata->kref);
1432 fcport->rdata = rdata;
1433 fcport->rport = rport;
1435 rval = qedf_alloc_sq(qedf, fcport);
1437 qedf_cleanup_fcport(qedf, fcport);
1441 /* Set device type */
1442 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1443 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1444 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1445 fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1446 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1447 "portid=%06x is a TAPE device.\n",
1448 rdata->ids.port_id);
1450 fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1453 rval = qedf_offload_connection(qedf, fcport);
1455 qedf_cleanup_fcport(qedf, fcport);
1459 /* Add fcport to list of qedf_ctx list of offloaded ports */
1460 spin_lock_irqsave(&qedf->hba_lock, flags);
1461 list_add_rcu(&fcport->peers, &qedf->fcports);
1462 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1465 * Set the session ready bit to let everyone know that this
1466 * connection is ready for I/O
1468 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1469 atomic_inc(&qedf->num_offloads);
1473 case RPORT_EV_FAILED:
1475 port_id = rdata->ids.port_id;
1476 if (port_id == FC_FID_DIR_SERV)
1480 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1481 "port_id=%x - rport notcreated Yet!!\n", port_id);
1484 rp = rport->dd_data;
1486 * Perform session upload. Note that rdata->peers is already
1487 * removed from disc->rports list before we get this event.
1489 fcport = (struct qedf_rport *)&rp[1];
1491 spin_lock_irqsave(&fcport->rport_lock, flags);
1492 /* Only free this fcport if it is offloaded already */
1493 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
1494 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1496 set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1498 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1499 qedf_cleanup_fcport(qedf, fcport);
1501 * Remove fcport to list of qedf_ctx list of offloaded
1504 spin_lock_irqsave(&qedf->hba_lock, flags);
1505 list_del_rcu(&fcport->peers);
1506 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1508 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1510 atomic_dec(&qedf->num_offloads);
1512 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1521 static void qedf_abort_io(struct fc_lport *lport)
1523 /* NO-OP but need to fill in the template */
1526 static void qedf_fcp_cleanup(struct fc_lport *lport)
1529 * NO-OP but need to fill in template to prevent a NULL
1530 * function pointer dereference during link down. I/Os
1531 * will be flushed when port is uploaded.
1535 static struct libfc_function_template qedf_lport_template = {
1536 .frame_send = qedf_xmit,
1537 .fcp_abort_io = qedf_abort_io,
1538 .fcp_cleanup = qedf_fcp_cleanup,
1539 .rport_event_callback = qedf_rport_event_handler,
1540 .elsct_send = qedf_elsct_send,
1543 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1545 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1547 qedf->ctlr.send = qedf_fip_send;
1548 qedf->ctlr.get_src_addr = qedf_get_src_mac;
1549 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1552 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1554 struct fc_lport *lport = qedf->lport;
1555 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1560 * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1562 lport->fdmi_enabled = 1;
1565 * Setup the necessary fc_host attributes to that will be used to fill
1566 * in the FDMI information.
1569 /* Get the PCI-e Device Serial Number Capability */
1570 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1573 for (i = 0; i < 8; i++)
1574 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1576 snprintf(fc_host->serial_number,
1577 sizeof(fc_host->serial_number),
1578 "%02X%02X%02X%02X%02X%02X%02X%02X",
1579 buf[7], buf[6], buf[5], buf[4],
1580 buf[3], buf[2], buf[1], buf[0]);
1582 snprintf(fc_host->serial_number,
1583 sizeof(fc_host->serial_number), "Unknown");
1585 snprintf(fc_host->manufacturer,
1586 sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1588 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1590 snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1591 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1594 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1595 "Rev %d", qedf->pdev->revision);
1597 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1598 "%s", QEDF_VERSION);
1600 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1601 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1602 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1605 static int qedf_lport_setup(struct qedf_ctx *qedf)
1607 struct fc_lport *lport = qedf->lport;
1610 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1611 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1612 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1613 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1614 lport->boot_time = jiffies;
1615 lport->e_d_tov = 2 * 1000;
1616 lport->r_a_tov = 10 * 1000;
1618 /* Set NPIV support */
1619 lport->does_npiv = 1;
1620 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1622 fc_set_wwnn(lport, qedf->wwnn);
1623 fc_set_wwpn(lport, qedf->wwpn);
1625 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
1626 QEDF_ERR(&qedf->dbg_ctx,
1627 "fcoe_libfc_config failed.\n");
1631 /* Allocate the exchange manager */
1632 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1635 if (fc_lport_init_stats(lport))
1638 /* Finish lport config */
1639 fc_lport_config(lport);
1641 /* Set max frame size */
1642 fc_set_mfs(lport, QEDF_MFS);
1643 fc_host_maxframe_size(lport->host) = lport->mfs;
1645 /* Set default dev_loss_tmo based on module parameter */
1646 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1648 /* Set symbolic node name */
1649 snprintf(fc_host_symbolic_name(lport->host), 256,
1650 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1652 qedf_setup_fdmi(qedf);
1661 static int qedf_vport_libfc_config(struct fc_vport *vport,
1662 struct fc_lport *lport)
1666 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1667 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1668 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1669 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1670 lport->boot_time = jiffies;
1671 lport->e_d_tov = 2 * 1000;
1672 lport->r_a_tov = 10 * 1000;
1673 lport->does_npiv = 1; /* Temporary until we add NPIV support */
1675 /* Allocate stats for vport */
1676 if (fc_lport_init_stats(lport))
1679 /* Finish lport config */
1680 fc_lport_config(lport);
1682 /* offload related configuration */
1683 lport->crc_offload = 0;
1684 lport->seq_offload = 0;
1685 lport->lro_enabled = 0;
1692 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1694 struct Scsi_Host *shost = vport_to_shost(vport);
1695 struct fc_lport *n_port = shost_priv(shost);
1696 struct fc_lport *vn_port;
1697 struct qedf_ctx *base_qedf = lport_priv(n_port);
1698 struct qedf_ctx *vport_qedf;
1703 rc = fcoe_validate_vport_create(vport);
1705 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1706 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1707 "WWPN (0x%s) already exists.\n", buf);
1711 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1712 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1713 "because link is not up.\n");
1718 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1720 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1726 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1727 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1730 /* Copy some fields from base_qedf */
1731 vport_qedf = lport_priv(vn_port);
1732 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1734 /* Set qedf data specific to this vport */
1735 vport_qedf->lport = vn_port;
1736 /* Use same hba_lock as base_qedf */
1737 vport_qedf->hba_lock = base_qedf->hba_lock;
1738 vport_qedf->pdev = base_qedf->pdev;
1739 vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1740 init_completion(&vport_qedf->flogi_compl);
1741 INIT_LIST_HEAD(&vport_qedf->fcports);
1743 rc = qedf_vport_libfc_config(vport, vn_port);
1745 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1746 "for lport stats.\n");
1750 fc_set_wwnn(vn_port, vport->node_name);
1751 fc_set_wwpn(vn_port, vport->port_name);
1752 vport_qedf->wwnn = vn_port->wwnn;
1753 vport_qedf->wwpn = vn_port->wwpn;
1755 vn_port->host->transportt = qedf_fc_vport_transport_template;
1756 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1757 vn_port->host->max_lun = qedf_max_lun;
1758 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1759 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1761 rc = scsi_add_host(vn_port->host, &vport->dev);
1763 QEDF_WARN(&base_qedf->dbg_ctx,
1764 "Error adding Scsi_Host rc=0x%x.\n", rc);
1768 /* Set default dev_loss_tmo based on module parameter */
1769 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1771 /* Init libfc stuffs */
1772 memcpy(&vn_port->tt, &qedf_lport_template,
1773 sizeof(qedf_lport_template));
1774 fc_exch_init(vn_port);
1775 fc_elsct_init(vn_port);
1776 fc_lport_init(vn_port);
1777 fc_disc_init(vn_port);
1778 fc_disc_config(vn_port, vn_port);
1781 /* Allocate the exchange manager */
1782 shost = vport_to_shost(vport);
1783 n_port = shost_priv(shost);
1784 fc_exch_mgr_list_clone(n_port, vn_port);
1786 /* Set max frame size */
1787 fc_set_mfs(vn_port, QEDF_MFS);
1789 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1792 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1794 vn_port->boot_time = jiffies;
1795 fc_fabric_login(vn_port);
1796 fc_vport_setlink(vn_port);
1799 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1802 /* Set up debug context for vport */
1803 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1804 vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1807 scsi_host_put(vn_port->host);
1812 static int qedf_vport_destroy(struct fc_vport *vport)
1814 struct Scsi_Host *shost = vport_to_shost(vport);
1815 struct fc_lport *n_port = shost_priv(shost);
1816 struct fc_lport *vn_port = vport->dd_data;
1817 struct qedf_ctx *qedf = lport_priv(vn_port);
1820 QEDF_ERR(NULL, "qedf is NULL.\n");
1824 /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1825 set_bit(QEDF_UNLOADING, &qedf->flags);
1827 mutex_lock(&n_port->lp_mutex);
1828 list_del(&vn_port->list);
1829 mutex_unlock(&n_port->lp_mutex);
1831 fc_fabric_logoff(vn_port);
1832 fc_lport_destroy(vn_port);
1834 /* Detach from scsi-ml */
1835 fc_remove_host(vn_port->host);
1836 scsi_remove_host(vn_port->host);
1839 * Only try to release the exchange manager if the vn_port
1840 * configuration is complete.
1842 if (vn_port->state == LPORT_ST_READY)
1843 fc_exch_mgr_free(vn_port);
1845 /* Free memory used by statistical counters */
1846 fc_lport_free_stats(vn_port);
1848 /* Release Scsi_Host */
1850 scsi_host_put(vn_port->host);
1856 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1858 struct fc_lport *lport = vport->dd_data;
1861 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1862 fc_fabric_logoff(lport);
1864 lport->boot_time = jiffies;
1865 fc_fabric_login(lport);
1866 fc_vport_setlink(lport);
1872 * During removal we need to wait for all the vports associated with a port
1873 * to be destroyed so we avoid a race condition where libfc is still trying
1874 * to reap vports while the driver remove function has already reaped the
1875 * driver contexts associated with the physical port.
1877 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1879 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1881 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1883 while (fc_host->npiv_vports_inuse > 0) {
1884 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1885 "Waiting for all vports to be reaped.\n");
1891 * qedf_fcoe_reset - Resets the fcoe
1893 * @shost: shost the reset is from
1897 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1899 struct fc_lport *lport = shost_priv(shost);
1901 qedf_ctx_soft_reset(lport);
1905 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1908 struct fc_host_statistics *qedf_stats;
1909 struct fc_lport *lport = shost_priv(shost);
1910 struct qedf_ctx *qedf = lport_priv(lport);
1911 struct qed_fcoe_stats *fw_fcoe_stats;
1913 qedf_stats = fc_get_host_stats(shost);
1915 /* We don't collect offload stats for specific NPIV ports */
1919 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1920 if (!fw_fcoe_stats) {
1921 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1922 "fw_fcoe_stats.\n");
1926 mutex_lock(&qedf->stats_mutex);
1928 /* Query firmware for offload stats */
1929 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1932 * The expectation is that we add our offload stats to the stats
1933 * being maintained by libfc each time the fc_get_host_status callback
1934 * is invoked. The additions are not carried over for each call to
1935 * the fc_get_host_stats callback.
1937 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1938 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1939 fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1940 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1941 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1942 fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1943 qedf_stats->fcp_input_megabytes +=
1944 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1945 qedf_stats->fcp_output_megabytes +=
1946 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1947 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1948 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1949 qedf_stats->invalid_crc_count +=
1950 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1951 qedf_stats->dumped_frames =
1952 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1953 qedf_stats->error_frames +=
1954 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1955 qedf_stats->fcp_input_requests += qedf->input_requests;
1956 qedf_stats->fcp_output_requests += qedf->output_requests;
1957 qedf_stats->fcp_control_requests += qedf->control_requests;
1958 qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1959 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1961 mutex_unlock(&qedf->stats_mutex);
1962 kfree(fw_fcoe_stats);
1967 static struct fc_function_template qedf_fc_transport_fn = {
1968 .show_host_node_name = 1,
1969 .show_host_port_name = 1,
1970 .show_host_supported_classes = 1,
1971 .show_host_supported_fc4s = 1,
1972 .show_host_active_fc4s = 1,
1973 .show_host_maxframe_size = 1,
1975 .show_host_port_id = 1,
1976 .show_host_supported_speeds = 1,
1977 .get_host_speed = fc_get_host_speed,
1978 .show_host_speed = 1,
1979 .show_host_port_type = 1,
1980 .get_host_port_state = fc_get_host_port_state,
1981 .show_host_port_state = 1,
1982 .show_host_symbolic_name = 1,
1985 * Tell FC transport to allocate enough space to store the backpointer
1986 * for the associate qedf_rport struct.
1988 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1989 sizeof(struct qedf_rport)),
1990 .show_rport_maxframe_size = 1,
1991 .show_rport_supported_classes = 1,
1992 .show_host_fabric_name = 1,
1993 .show_starget_node_name = 1,
1994 .show_starget_port_name = 1,
1995 .show_starget_port_id = 1,
1996 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1997 .show_rport_dev_loss_tmo = 1,
1998 .get_fc_host_stats = qedf_fc_get_host_stats,
1999 .issue_fc_host_lip = qedf_fcoe_reset,
2000 .vport_create = qedf_vport_create,
2001 .vport_delete = qedf_vport_destroy,
2002 .vport_disable = qedf_vport_disable,
2003 .bsg_request = fc_lport_bsg_request,
2006 static struct fc_function_template qedf_fc_vport_transport_fn = {
2007 .show_host_node_name = 1,
2008 .show_host_port_name = 1,
2009 .show_host_supported_classes = 1,
2010 .show_host_supported_fc4s = 1,
2011 .show_host_active_fc4s = 1,
2012 .show_host_maxframe_size = 1,
2013 .show_host_port_id = 1,
2014 .show_host_supported_speeds = 1,
2015 .get_host_speed = fc_get_host_speed,
2016 .show_host_speed = 1,
2017 .show_host_port_type = 1,
2018 .get_host_port_state = fc_get_host_port_state,
2019 .show_host_port_state = 1,
2020 .show_host_symbolic_name = 1,
2021 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2022 sizeof(struct qedf_rport)),
2023 .show_rport_maxframe_size = 1,
2024 .show_rport_supported_classes = 1,
2025 .show_host_fabric_name = 1,
2026 .show_starget_node_name = 1,
2027 .show_starget_port_name = 1,
2028 .show_starget_port_id = 1,
2029 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2030 .show_rport_dev_loss_tmo = 1,
2031 .get_fc_host_stats = fc_get_host_stats,
2032 .issue_fc_host_lip = qedf_fcoe_reset,
2033 .bsg_request = fc_lport_bsg_request,
2036 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2038 struct qedf_ctx *qedf = fp->qedf;
2039 struct global_queue *que;
2040 struct qed_sb_info *sb_info = fp->sb_info;
2041 struct status_block_e4 *sb = sb_info->sb_virt;
2044 /* Get the pointer to the global CQ this completion is on */
2045 que = qedf->global_queues[fp->sb_id];
2047 /* Be sure all responses have been written to PI */
2050 /* Get the current firmware producer index */
2051 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2053 return (que->cq_prod_idx != prod_idx);
2057 * Interrupt handler code.
2060 /* Process completion queue and copy CQE contents for deferred processesing
2062 * Return true if we should wake the I/O thread, false if not.
2064 static bool qedf_process_completions(struct qedf_fastpath *fp)
2066 struct qedf_ctx *qedf = fp->qedf;
2067 struct qed_sb_info *sb_info = fp->sb_info;
2068 struct status_block_e4 *sb = sb_info->sb_virt;
2069 struct global_queue *que;
2071 struct fcoe_cqe *cqe;
2072 struct qedf_io_work *io_work;
2073 int num_handled = 0;
2075 struct qedf_ioreq *io_req = NULL;
2080 /* Get the current firmware producer index */
2081 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2083 /* Get the pointer to the global CQ this completion is on */
2084 que = qedf->global_queues[fp->sb_id];
2086 /* Calculate the amount of new elements since last processing */
2087 new_cqes = (prod_idx >= que->cq_prod_idx) ?
2088 (prod_idx - que->cq_prod_idx) :
2089 0x10000 - que->cq_prod_idx + prod_idx;
2091 /* Save producer index */
2092 que->cq_prod_idx = prod_idx;
2097 cqe = &que->cq[que->cq_cons_idx];
2099 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2100 FCOE_CQE_CQE_TYPE_MASK;
2103 * Process unsolicited CQEs directly in the interrupt handler
2104 * sine we need the fastpath ID
2106 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2107 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2108 "Unsolicated CQE.\n");
2109 qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2111 * Don't add a work list item. Increment consumer
2112 * consumer index and move on.
2117 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2118 io_req = &qedf->cmd_mgr->cmds[xid];
2121 * Figure out which percpu thread we should queue this I/O
2125 /* If there is not io_req assocated with this CQE
2126 * just queue it on CPU 0
2131 io_req->int_cpu = smp_processor_id();
2134 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2136 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2137 "work for I/O completion.\n");
2140 memset(io_work, 0, sizeof(struct qedf_io_work));
2142 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2144 /* Copy contents of CQE for deferred processing */
2145 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2147 io_work->qedf = fp->qedf;
2148 io_work->fp = NULL; /* Only used for unsolicited frames */
2150 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2154 if (que->cq_cons_idx == fp->cq_num_entries)
2155 que->cq_cons_idx = 0;
2163 /* MSI-X fastpath handler code */
2164 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2166 struct qedf_fastpath *fp = dev_id;
2169 QEDF_ERR(NULL, "fp is null.\n");
2173 QEDF_ERR(NULL, "fp->sb_info in null.");
2178 * Disable interrupts for this status block while we process new
2181 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2184 qedf_process_completions(fp);
2186 if (qedf_fp_has_work(fp) == 0) {
2187 /* Update the sb information */
2188 qed_sb_update_sb_idx(fp->sb_info);
2190 /* Check for more work */
2193 if (qedf_fp_has_work(fp) == 0) {
2194 /* Re-enable interrupts */
2195 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2201 /* Do we ever want to break out of above loop? */
2205 /* simd handler for MSI/INTa */
2206 static void qedf_simd_int_handler(void *cookie)
2208 /* Cookie is qedf_ctx struct */
2209 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2211 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2214 #define QEDF_SIMD_HANDLER_NUM 0
2215 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2221 if (qedf->int_info.msix_cnt) {
2222 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2223 vector_idx = i * qedf->dev_info.common.num_hwfns +
2224 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2225 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2226 "Freeing IRQ #%d vector_idx=%d.\n",
2228 vector = qedf->int_info.msix[vector_idx].vector;
2229 synchronize_irq(vector);
2230 irq_set_affinity_hint(vector, NULL);
2231 irq_set_affinity_notifier(vector, NULL);
2232 free_irq(vector, &qedf->fp_array[i]);
2235 qed_ops->common->simd_handler_clean(qedf->cdev,
2236 QEDF_SIMD_HANDLER_NUM);
2238 qedf->int_info.used_cnt = 0;
2239 qed_ops->common->set_fp_int(qedf->cdev, 0);
2242 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2248 cpu = cpumask_first(cpu_online_mask);
2249 for (i = 0; i < qedf->num_queues; i++) {
2250 vector_idx = i * qedf->dev_info.common.num_hwfns +
2251 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2252 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2253 "Requesting IRQ #%d vector_idx=%d.\n",
2255 vector = qedf->int_info.msix[vector_idx].vector;
2256 rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
2257 &qedf->fp_array[i]);
2260 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2261 qedf_sync_free_irqs(qedf);
2265 qedf->int_info.used_cnt++;
2266 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
2267 cpu = cpumask_next(cpu, cpu_online_mask);
2273 static int qedf_setup_int(struct qedf_ctx *qedf)
2278 * Learn interrupt configuration
2280 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2284 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2288 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2289 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2292 if (qedf->int_info.msix_cnt)
2293 return qedf_request_msix_irq(qedf);
2295 qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2296 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2297 qedf->int_info.used_cnt = 1;
2299 QEDF_ERR(&qedf->dbg_ctx,
2300 "Cannot load driver due to a lack of MSI-X vectors.\n");
2304 /* Main function for libfc frame reception */
2305 static void qedf_recv_frame(struct qedf_ctx *qedf,
2306 struct sk_buff *skb)
2309 struct fc_lport *lport;
2310 struct fc_frame_header *fh;
2311 struct fcoe_crc_eof crc_eof;
2312 struct fc_frame *fp;
2314 u8 *dest_mac = NULL;
2315 struct fcoe_hdr *hp;
2316 struct qedf_rport *fcport;
2317 struct fc_lport *vn_port;
2320 lport = qedf->lport;
2321 if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2322 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2327 if (skb_is_nonlinear(skb))
2329 mac = eth_hdr(skb)->h_source;
2330 dest_mac = eth_hdr(skb)->h_dest;
2332 /* Pull the header */
2333 hp = (struct fcoe_hdr *)skb->data;
2334 fh = (struct fc_frame_header *) skb_transport_header(skb);
2335 skb_pull(skb, sizeof(struct fcoe_hdr));
2336 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2338 fp = (struct fc_frame *)skb;
2341 fr_sof(fp) = hp->fcoe_sof;
2342 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2346 fr_eof(fp) = crc_eof.fcoe_eof;
2347 fr_crc(fp) = crc_eof.fcoe_crc32;
2348 if (pskb_trim(skb, fr_len)) {
2353 fh = fc_frame_header_get(fp);
2356 * Invalid frame filters.
2359 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2360 fh->fh_type == FC_TYPE_FCP) {
2361 /* Drop FCP data. We dont this in L2 path */
2365 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2366 fh->fh_type == FC_TYPE_ELS) {
2367 switch (fc_frame_payload_op(fp)) {
2369 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2370 /* drop non-FIP LOGO */
2378 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2379 /* Drop incoming ABTS */
2384 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2385 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2386 "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2391 if (qedf->ctlr.state) {
2392 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2393 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2394 "Wrong source address: mac:%pM dest_addr:%pM.\n",
2395 mac, qedf->ctlr.dest_addr);
2401 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2404 * If the destination ID from the frame header does not match what we
2405 * have on record for lport and the search for a NPIV port came up
2406 * empty then this is not addressed to our port so simply drop it.
2408 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2409 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2410 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
2411 lport->port_id, ntoh24(fh->fh_d_id));
2416 f_ctl = ntoh24(fh->fh_f_ctl);
2417 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2418 (f_ctl & FC_FC_EX_CTX)) {
2419 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2425 * If a connection is uploading, drop incoming FCoE frames as there
2426 * is a small window where we could try to return a frame while libfc
2427 * is trying to clean things up.
2430 /* Get fcport associated with d_id if it exists */
2431 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2433 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2435 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2436 "Connection uploading, dropping fp=%p.\n", fp);
2441 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2442 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2443 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2445 if (qedf_dump_frames)
2446 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2447 1, skb->data, skb->len, false);
2448 fc_exch_recv(lport, fp);
2451 static void qedf_ll2_process_skb(struct work_struct *work)
2453 struct qedf_skb_work *skb_work =
2454 container_of(work, struct qedf_skb_work, work);
2455 struct qedf_ctx *qedf = skb_work->qedf;
2456 struct sk_buff *skb = skb_work->skb;
2460 QEDF_ERR(NULL, "qedf is NULL\n");
2464 eh = (struct ethhdr *)skb->data;
2466 /* Undo VLAN encapsulation */
2467 if (eh->h_proto == htons(ETH_P_8021Q)) {
2468 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2469 eh = skb_pull(skb, VLAN_HLEN);
2470 skb_reset_mac_header(skb);
2474 * Process either a FIP frame or FCoE frame based on the
2475 * protocol value. If it's not either just drop the
2478 if (eh->h_proto == htons(ETH_P_FIP)) {
2479 qedf_fip_recv(qedf, skb);
2481 } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2482 __skb_pull(skb, ETH_HLEN);
2483 qedf_recv_frame(qedf, skb);
2495 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2498 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2499 struct qedf_skb_work *skb_work;
2501 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2502 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2503 "Dropping frame as link state is down.\n");
2508 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2510 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2511 "dropping frame.\n");
2516 INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2517 skb_work->skb = skb;
2518 skb_work->qedf = qedf;
2519 queue_work(qedf->ll2_recv_wq, &skb_work->work);
2524 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2525 .rx_cb = qedf_ll2_rx,
2529 /* Main thread to process I/O completions */
2530 void qedf_fp_io_handler(struct work_struct *work)
2532 struct qedf_io_work *io_work =
2533 container_of(work, struct qedf_io_work, work);
2537 * Deferred part of unsolicited CQE sends
2540 comp_type = (io_work->cqe.cqe_data >>
2541 FCOE_CQE_CQE_TYPE_SHIFT) &
2542 FCOE_CQE_CQE_TYPE_MASK;
2543 if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2545 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2547 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2552 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2553 struct qed_sb_info *sb_info, u16 sb_id)
2555 struct status_block_e4 *sb_virt;
2559 sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2560 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);
2563 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2564 "for id = %d.\n", sb_id);
2568 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2569 sb_id, QED_SB_TYPE_STORAGE);
2572 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2573 "failed for id = %d.\n", sb_id);
2580 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2582 if (sb_info->sb_virt)
2583 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2584 (void *)sb_info->sb_virt, sb_info->sb_phys);
2587 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2590 struct qedf_fastpath *fp = NULL;
2592 for (id = 0; id < qedf->num_queues; id++) {
2593 fp = &(qedf->fp_array[id]);
2594 if (fp->sb_id == QEDF_SB_ID_NULL)
2596 qedf_free_sb(qedf, fp->sb_info);
2599 kfree(qedf->fp_array);
2602 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2605 struct qedf_fastpath *fp;
2609 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2612 if (!qedf->fp_array) {
2613 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2618 for (id = 0; id < qedf->num_queues; id++) {
2619 fp = &(qedf->fp_array[id]);
2620 fp->sb_id = QEDF_SB_ID_NULL;
2621 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2623 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2624 "allocation failed.\n");
2627 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2629 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2630 "initialization failed.\n");
2635 fp->cq_num_entries =
2636 qedf->global_queues[id]->cq_mem_size /
2637 sizeof(struct fcoe_cqe);
2643 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2646 struct qedf_ioreq *io_req;
2647 struct qedf_rport *fcport;
2650 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2651 FCOE_CQE_CQE_TYPE_MASK;
2653 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2654 io_req = &qedf->cmd_mgr->cmds[xid];
2656 /* Completion not for a valid I/O anymore so just return */
2660 fcport = io_req->fcport;
2662 if (fcport == NULL) {
2663 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2668 * Check that fcport is offloaded. If it isn't then the spinlock
2669 * isn't valid and shouldn't be taken. We should just return.
2671 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2672 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2677 switch (comp_type) {
2678 case FCOE_GOOD_COMPLETION_CQE_TYPE:
2679 atomic_inc(&fcport->free_sqes);
2680 switch (io_req->cmd_type) {
2682 qedf_scsi_completion(qedf, cqe, io_req);
2685 qedf_process_els_compl(qedf, cqe, io_req);
2687 case QEDF_TASK_MGMT_CMD:
2688 qedf_process_tmf_compl(qedf, cqe, io_req);
2690 case QEDF_SEQ_CLEANUP:
2691 qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2695 case FCOE_ERROR_DETECTION_CQE_TYPE:
2696 atomic_inc(&fcport->free_sqes);
2697 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2698 "Error detect CQE.\n");
2699 qedf_process_error_detect(qedf, cqe, io_req);
2701 case FCOE_EXCH_CLEANUP_CQE_TYPE:
2702 atomic_inc(&fcport->free_sqes);
2703 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2705 qedf_process_cleanup_compl(qedf, cqe, io_req);
2707 case FCOE_ABTS_CQE_TYPE:
2708 atomic_inc(&fcport->free_sqes);
2709 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2711 qedf_process_abts_compl(qedf, cqe, io_req);
2713 case FCOE_DUMMY_CQE_TYPE:
2714 atomic_inc(&fcport->free_sqes);
2715 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2718 case FCOE_LOCAL_COMP_CQE_TYPE:
2719 atomic_inc(&fcport->free_sqes);
2720 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2721 "Local completion CQE.\n");
2723 case FCOE_WARNING_CQE_TYPE:
2724 atomic_inc(&fcport->free_sqes);
2725 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2727 qedf_process_warning_compl(qedf, cqe, io_req);
2729 case MAX_FCOE_CQE_TYPE:
2730 atomic_inc(&fcport->free_sqes);
2731 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2735 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2741 static void qedf_free_bdq(struct qedf_ctx *qedf)
2745 if (qedf->bdq_pbl_list)
2746 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2747 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2750 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2751 qedf->bdq_pbl, qedf->bdq_pbl_dma);
2753 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2754 if (qedf->bdq[i].buf_addr) {
2755 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2756 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2761 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2764 struct global_queue **gl = qedf->global_queues;
2766 for (i = 0; i < qedf->num_queues; i++) {
2771 dma_free_coherent(&qedf->pdev->dev,
2772 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2774 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2775 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2780 qedf_free_bdq(qedf);
2783 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2786 struct scsi_bd *pbl;
2790 /* Alloc dma memory for BDQ buffers */
2791 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2792 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2793 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2794 if (!qedf->bdq[i].buf_addr) {
2795 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2801 /* Alloc dma memory for BDQ page buffer list */
2802 qedf->bdq_pbl_mem_size =
2803 QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2804 qedf->bdq_pbl_mem_size =
2805 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2807 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2808 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2809 if (!qedf->bdq_pbl) {
2810 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2814 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2815 "BDQ PBL addr=0x%p dma=%pad\n",
2816 qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2819 * Populate BDQ PBL with physical and virtual address of individual
2822 pbl = (struct scsi_bd *)qedf->bdq_pbl;
2823 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2824 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2825 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2826 pbl->opaque.fcoe_opaque.hi = 0;
2827 /* Opaque lo data is an index into the BDQ array */
2828 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2832 /* Allocate list of PBL pages */
2833 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
2835 &qedf->bdq_pbl_list_dma,
2837 if (!qedf->bdq_pbl_list) {
2838 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2843 * Now populate PBL list with pages that contain pointers to the
2844 * individual buffers.
2846 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2848 list = (u64 *)qedf->bdq_pbl_list;
2849 page = qedf->bdq_pbl_list_dma;
2850 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2851 *list = qedf->bdq_pbl_dma;
2853 page += QEDF_PAGE_SIZE;
2859 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2868 /* Allocate and map CQs, RQs */
2870 * Number of global queues (CQ / RQ). This should
2871 * be <= number of available MSIX vectors for the PF
2873 if (!qedf->num_queues) {
2874 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2879 * Make sure we allocated the PBL that will contain the physical
2880 * addresses of our queues
2882 if (!qedf->p_cpuq) {
2884 goto mem_alloc_failure;
2887 qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2888 * qedf->num_queues), GFP_KERNEL);
2889 if (!qedf->global_queues) {
2890 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2891 "queues array ptr memory\n");
2894 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2895 "qedf->global_queues=%p.\n", qedf->global_queues);
2897 /* Allocate DMA coherent buffers for BDQ */
2898 rc = qedf_alloc_bdq(qedf);
2900 goto mem_alloc_failure;
2902 /* Allocate a CQ and an associated PBL for each MSI-X vector */
2903 for (i = 0; i < qedf->num_queues; i++) {
2904 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2906 if (!qedf->global_queues[i]) {
2907 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2908 "global queue %d.\n", i);
2910 goto mem_alloc_failure;
2913 qedf->global_queues[i]->cq_mem_size =
2914 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2915 qedf->global_queues[i]->cq_mem_size =
2916 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2918 qedf->global_queues[i]->cq_pbl_size =
2919 (qedf->global_queues[i]->cq_mem_size /
2920 PAGE_SIZE) * sizeof(void *);
2921 qedf->global_queues[i]->cq_pbl_size =
2922 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2924 qedf->global_queues[i]->cq =
2925 dma_alloc_coherent(&qedf->pdev->dev,
2926 qedf->global_queues[i]->cq_mem_size,
2927 &qedf->global_queues[i]->cq_dma,
2930 if (!qedf->global_queues[i]->cq) {
2931 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2933 goto mem_alloc_failure;
2936 qedf->global_queues[i]->cq_pbl =
2937 dma_alloc_coherent(&qedf->pdev->dev,
2938 qedf->global_queues[i]->cq_pbl_size,
2939 &qedf->global_queues[i]->cq_pbl_dma,
2942 if (!qedf->global_queues[i]->cq_pbl) {
2943 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2945 goto mem_alloc_failure;
2949 num_pages = qedf->global_queues[i]->cq_mem_size /
2951 page = qedf->global_queues[i]->cq_dma;
2952 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2954 while (num_pages--) {
2955 *pbl = U64_LO(page);
2957 *pbl = U64_HI(page);
2959 page += QEDF_PAGE_SIZE;
2961 /* Set the initial consumer index for cq */
2962 qedf->global_queues[i]->cq_cons_idx = 0;
2965 list = (u32 *)qedf->p_cpuq;
2968 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2969 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
2970 * to the physical address which contains an array of pointers to
2971 * the physical addresses of the specific queue pages.
2973 for (i = 0; i < qedf->num_queues; i++) {
2974 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2976 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2987 qedf_free_global_queues(qedf);
2991 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2993 u8 sq_num_pbl_pages;
3000 * The number of completion queues/fastpath interrupts/status blocks
3001 * we allocation is the minimum off:
3004 * Number allocated by qed for our PCI function
3006 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
3008 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3011 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3012 qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3013 &qedf->hw_p_cpuq, GFP_KERNEL);
3015 if (!qedf->p_cpuq) {
3016 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3020 rval = qedf_alloc_global_queues(qedf);
3022 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3027 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3028 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3029 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3030 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3032 /* Calculate CQ num entries */
3033 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3034 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3035 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3037 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3039 /* Setup the value for fcoe PF */
3040 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3041 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3042 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3043 (u64)qedf->hw_p_cpuq;
3044 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3046 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3048 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3049 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3051 /* log_page_size: 12 for 4KB pages */
3052 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3054 qedf->pf_params.fcoe_pf_params.mtu = 9000;
3055 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3056 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3058 /* BDQ address and size */
3059 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3060 qedf->bdq_pbl_list_dma;
3061 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3062 qedf->bdq_pbl_list_num_entries;
3063 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3065 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3066 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3068 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3069 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3071 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3072 "cq_num_entries=%d.\n",
3073 qedf->pf_params.fcoe_pf_params.cq_num_entries);
3078 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3079 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3084 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3085 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3089 qedf_free_global_queues(qedf);
3091 kfree(qedf->global_queues);
3095 * PCI driver functions
3098 static const struct pci_device_id qedf_pci_tbl[] = {
3099 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3100 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3103 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3105 static struct pci_driver qedf_pci_driver = {
3106 .name = QEDF_MODULE_NAME,
3107 .id_table = qedf_pci_tbl,
3108 .probe = qedf_probe,
3109 .remove = qedf_remove,
3112 static int __qedf_probe(struct pci_dev *pdev, int mode)
3115 struct fc_lport *lport;
3116 struct qedf_ctx *qedf;
3117 struct Scsi_Host *host;
3119 struct qed_ll2_params params;
3121 struct qed_link_params link_params;
3123 void *task_start, *task_end;
3124 struct qed_slowpath_params slowpath_params;
3125 struct qed_probe_params qed_params;
3129 * When doing error recovery we didn't reap the lport so don't try
3132 if (mode != QEDF_MODE_RECOVERY) {
3133 lport = libfc_host_alloc(&qedf_host_template,
3134 sizeof(struct qedf_ctx));
3137 QEDF_ERR(NULL, "Could not allocate lport.\n");
3142 fc_disc_init(lport);
3144 /* Initialize qedf_ctx */
3145 qedf = lport_priv(lport);
3146 qedf->lport = lport;
3147 qedf->ctlr.lp = lport;
3149 qedf->dbg_ctx.pdev = pdev;
3150 qedf->dbg_ctx.host_no = lport->host->host_no;
3151 spin_lock_init(&qedf->hba_lock);
3152 INIT_LIST_HEAD(&qedf->fcports);
3153 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3154 atomic_set(&qedf->num_offloads, 0);
3155 qedf->stop_io_on_error = false;
3156 pci_set_drvdata(pdev, qedf);
3157 init_completion(&qedf->fipvlan_compl);
3158 mutex_init(&qedf->stats_mutex);
3159 mutex_init(&qedf->flush_mutex);
3161 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3162 "QLogic FastLinQ FCoE Module qedf %s, "
3163 "FW %d.%d.%d.%d\n", QEDF_VERSION,
3164 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3165 FW_ENGINEERING_VERSION);
3167 /* Init pointers during recovery */
3168 qedf = pci_get_drvdata(pdev);
3169 lport = qedf->lport;
3174 /* Allocate mempool for qedf_io_work structs */
3175 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3176 qedf_io_work_cache);
3177 if (qedf->io_mempool == NULL) {
3178 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3181 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3184 sprintf(host_buf, "qedf_%u_link",
3185 qedf->lport->host->host_no);
3186 qedf->link_update_wq = create_workqueue(host_buf);
3187 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3188 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3189 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3190 qedf->fipvlan_retries = qedf_fipvlan_retries;
3191 /* Set a default prio in case DCBX doesn't converge */
3192 if (qedf_default_prio > -1) {
3194 * This is the case where we pass a modparam in so we want to
3195 * honor it even if dcbx doesn't converge.
3197 qedf->prio = qedf_default_prio;
3199 qedf->prio = QEDF_DEFAULT_PRIO;
3202 * Common probe. Takes care of basic hardware init and pci_*
3205 memset(&qed_params, 0, sizeof(qed_params));
3206 qed_params.protocol = QED_PROTOCOL_FCOE;
3207 qed_params.dp_module = qedf_dp_module;
3208 qed_params.dp_level = qedf_dp_level;
3209 qed_params.is_vf = is_vf;
3210 qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3216 /* Learn information crucial for qedf to progress */
3217 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3219 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3223 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
3224 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
3225 qedf->dev_info.common.num_hwfns,
3226 qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
3228 /* queue allocation code should come here
3231 * status block allocation
3232 * interrupt registration (to get min number of queues)
3234 * qed_sp_fcoe_func_start
3236 rc = qedf_set_fcoe_pf_param(qedf);
3238 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3241 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3243 /* Record BDQ producer doorbell addresses */
3244 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3245 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3246 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3247 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3248 qedf->bdq_secondary_prod);
3250 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3252 rc = qedf_prepare_sb(qedf);
3255 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3259 /* Start the Slowpath-process */
3260 slowpath_params.int_mode = QED_INT_MODE_MSIX;
3261 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3262 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3263 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3264 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3265 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3266 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3268 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3273 * update_pf_params needs to be called before and after slowpath
3276 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3278 /* Setup interrupts */
3279 rc = qedf_setup_int(qedf);
3283 rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3285 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3288 task_start = qedf_get_task_mem(&qedf->tasks, 0);
3289 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3290 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3291 "end=%p block_size=%u.\n", task_start, task_end,
3295 * We need to write the number of BDs in the BDQ we've preallocated so
3296 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3299 qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3300 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3301 "Writing %d to primary and secondary BDQ doorbell registers.\n",
3302 qedf->bdq_prod_idx);
3303 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3304 tmp = readw(qedf->bdq_primary_prod);
3305 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3306 tmp = readw(qedf->bdq_secondary_prod);
3308 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3310 /* Now that the dev_info struct has been filled in set the MAC
3313 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3314 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3318 * Set the WWNN and WWPN in the following way:
3320 * If the info we get from qed is non-zero then use that to set the
3321 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3322 * on the MAC address.
3324 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3325 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3326 "Setting WWPN and WWNN from qed dev_info.\n");
3327 qedf->wwnn = qedf->dev_info.wwnn;
3328 qedf->wwpn = qedf->dev_info.wwpn;
3330 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3331 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3332 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3333 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3335 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx "
3336 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3338 sprintf(host_buf, "host_%d", host->host_no);
3339 qed_ops->common->set_name(qedf->cdev, host_buf);
3341 /* Allocate cmd mgr */
3342 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3343 if (!qedf->cmd_mgr) {
3344 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3349 if (mode != QEDF_MODE_RECOVERY) {
3350 host->transportt = qedf_fc_transport_template;
3351 host->max_lun = qedf_max_lun;
3352 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3353 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3354 rc = scsi_add_host(host, &pdev->dev);
3356 QEDF_WARN(&qedf->dbg_ctx,
3357 "Error adding Scsi_Host rc=0x%x.\n", rc);
3362 memset(¶ms, 0, sizeof(params));
3364 ether_addr_copy(params.ll2_mac_address, qedf->mac);
3366 /* Start LL2 processing thread */
3367 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3369 create_workqueue(host_buf);
3370 if (!qedf->ll2_recv_wq) {
3371 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3376 #ifdef CONFIG_DEBUG_FS
3377 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3382 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3383 rc = qed_ops->ll2->start(qedf->cdev, ¶ms);
3385 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3388 set_bit(QEDF_LL2_STARTED, &qedf->flags);
3390 /* Set initial FIP/FCoE VLAN to NULL */
3394 * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3395 * they were not reaped during the unload process.
3397 if (mode != QEDF_MODE_RECOVERY) {
3398 /* Setup imbedded fcoe controller */
3399 qedf_fcoe_ctlr_setup(qedf);
3402 rc = qedf_lport_setup(qedf);
3404 QEDF_ERR(&(qedf->dbg_ctx),
3405 "qedf_lport_setup failed.\n");
3410 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3411 qedf->timer_work_queue =
3412 create_workqueue(host_buf);
3413 if (!qedf->timer_work_queue) {
3414 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3420 /* DPC workqueue is not reaped during recovery unload */
3421 if (mode != QEDF_MODE_RECOVERY) {
3422 sprintf(host_buf, "qedf_%u_dpc",
3423 qedf->lport->host->host_no);
3424 qedf->dpc_wq = create_workqueue(host_buf);
3428 * GRC dump and sysfs parameters are not reaped during the recovery
3431 if (mode != QEDF_MODE_RECOVERY) {
3432 qedf->grcdump_size =
3433 qed_ops->common->dbg_all_data_size(qedf->cdev);
3434 if (qedf->grcdump_size) {
3435 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3436 qedf->grcdump_size);
3438 QEDF_ERR(&(qedf->dbg_ctx),
3439 "GRC Dump buffer alloc failed.\n");
3440 qedf->grcdump = NULL;
3443 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3444 "grcdump: addr=%p, size=%u.\n",
3445 qedf->grcdump, qedf->grcdump_size);
3447 qedf_create_sysfs_ctx_attr(qedf);
3449 /* Initialize I/O tracing for this adapter */
3450 spin_lock_init(&qedf->io_trace_lock);
3451 qedf->io_trace_idx = 0;
3454 init_completion(&qedf->flogi_compl);
3456 status = qed_ops->common->update_drv_state(qedf->cdev, true);
3458 QEDF_ERR(&(qedf->dbg_ctx),
3459 "Failed to send drv state to MFW.\n");
3461 memset(&link_params, 0, sizeof(struct qed_link_params));
3462 link_params.link_up = true;
3463 status = qed_ops->common->set_link(qedf->cdev, &link_params);
3465 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3467 /* Start/restart discovery */
3468 if (mode == QEDF_MODE_RECOVERY)
3469 fcoe_ctlr_link_up(&qedf->ctlr);
3471 fc_fabric_login(lport);
3477 if (qedf->ll2_recv_wq)
3478 destroy_workqueue(qedf->ll2_recv_wq);
3479 fc_remove_host(qedf->lport->host);
3480 scsi_remove_host(qedf->lport->host);
3481 #ifdef CONFIG_DEBUG_FS
3482 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3485 qedf_cmd_mgr_free(qedf->cmd_mgr);
3487 qed_ops->stop(qedf->cdev);
3489 qedf_free_fcoe_pf_param(qedf);
3490 qedf_sync_free_irqs(qedf);
3492 qed_ops->common->slowpath_stop(qedf->cdev);
3494 qed_ops->common->remove(qedf->cdev);
3496 scsi_host_put(lport->host);
3501 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3503 return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3506 static void __qedf_remove(struct pci_dev *pdev, int mode)
3508 struct qedf_ctx *qedf;
3512 QEDF_ERR(NULL, "pdev is NULL.\n");
3516 qedf = pci_get_drvdata(pdev);
3519 * Prevent race where we're in board disable work and then try to
3522 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3523 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3527 if (mode != QEDF_MODE_RECOVERY)
3528 set_bit(QEDF_UNLOADING, &qedf->flags);
3530 /* Logoff the fabric to upload all connections */
3531 if (mode == QEDF_MODE_RECOVERY)
3532 fcoe_ctlr_link_down(&qedf->ctlr);
3534 fc_fabric_logoff(qedf->lport);
3536 if (qedf_wait_for_upload(qedf) == false)
3537 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3539 #ifdef CONFIG_DEBUG_FS
3540 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3543 /* Stop any link update handling */
3544 cancel_delayed_work_sync(&qedf->link_update);
3545 destroy_workqueue(qedf->link_update_wq);
3546 qedf->link_update_wq = NULL;
3548 if (qedf->timer_work_queue)
3549 destroy_workqueue(qedf->timer_work_queue);
3552 clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3553 qed_ops->ll2->stop(qedf->cdev);
3554 if (qedf->ll2_recv_wq)
3555 destroy_workqueue(qedf->ll2_recv_wq);
3558 qedf_sync_free_irqs(qedf);
3559 qedf_destroy_sb(qedf);
3562 * During recovery don't destroy OS constructs that represent the
3565 if (mode != QEDF_MODE_RECOVERY) {
3566 qedf_free_grc_dump_buf(&qedf->grcdump);
3567 qedf_remove_sysfs_ctx_attr(qedf);
3569 /* Remove all SCSI/libfc/libfcoe structures */
3570 fcoe_ctlr_destroy(&qedf->ctlr);
3571 fc_lport_destroy(qedf->lport);
3572 fc_remove_host(qedf->lport->host);
3573 scsi_remove_host(qedf->lport->host);
3576 qedf_cmd_mgr_free(qedf->cmd_mgr);
3578 if (mode != QEDF_MODE_RECOVERY) {
3579 fc_exch_mgr_free(qedf->lport);
3580 fc_lport_free_stats(qedf->lport);
3582 /* Wait for all vports to be reaped */
3583 qedf_wait_for_vport_destroy(qedf);
3587 * Now that all connections have been uploaded we can stop the
3588 * rest of the qed operations
3590 qed_ops->stop(qedf->cdev);
3592 if (mode != QEDF_MODE_RECOVERY) {
3594 /* Stop general DPC handling */
3595 destroy_workqueue(qedf->dpc_wq);
3596 qedf->dpc_wq = NULL;
3600 /* Final shutdown for the board */
3601 qedf_free_fcoe_pf_param(qedf);
3602 if (mode != QEDF_MODE_RECOVERY) {
3603 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3604 pci_set_drvdata(pdev, NULL);
3607 rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3609 QEDF_ERR(&(qedf->dbg_ctx),
3610 "Failed to send drv state to MFW.\n");
3612 qed_ops->common->slowpath_stop(qedf->cdev);
3613 qed_ops->common->remove(qedf->cdev);
3615 mempool_destroy(qedf->io_mempool);
3617 /* Only reap the Scsi_host on a real removal */
3618 if (mode != QEDF_MODE_RECOVERY)
3619 scsi_host_put(qedf->lport->host);
3622 static void qedf_remove(struct pci_dev *pdev)
3624 /* Check to make sure this function wasn't already disabled */
3625 if (!atomic_read(&pdev->enable_cnt))
3628 __qedf_remove(pdev, QEDF_MODE_NORMAL);
3631 void qedf_wq_grcdump(struct work_struct *work)
3633 struct qedf_ctx *qedf =
3634 container_of(work, struct qedf_ctx, grcdump_work.work);
3636 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3637 qedf_capture_grc_dump(qedf);
3641 * Protocol TLV handler
3643 void qedf_get_protocol_tlv_data(void *dev, void *data)
3645 struct qedf_ctx *qedf = dev;
3646 struct qed_mfw_tlv_fcoe *fcoe = data;
3647 struct fc_lport *lport = qedf->lport;
3648 struct Scsi_Host *host = lport->host;
3649 struct fc_host_attrs *fc_host = shost_to_fc_host(host);
3650 struct fc_host_statistics *hst;
3652 /* Force a refresh of the fc_host stats including offload stats */
3653 hst = qedf_fc_get_host_stats(host);
3655 fcoe->qos_pri_set = true;
3656 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3658 fcoe->ra_tov_set = true;
3659 fcoe->ra_tov = lport->r_a_tov;
3661 fcoe->ed_tov_set = true;
3662 fcoe->ed_tov = lport->e_d_tov;
3664 fcoe->npiv_state_set = true;
3665 fcoe->npiv_state = 1; /* NPIV always enabled */
3667 fcoe->num_npiv_ids_set = true;
3668 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3670 /* Certain attributes we only want to set if we've selected an FCF */
3671 if (qedf->ctlr.sel_fcf) {
3672 fcoe->switch_name_set = true;
3673 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3676 fcoe->port_state_set = true;
3677 /* For qedf we're either link down or fabric attach */
3679 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3681 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3683 fcoe->link_failures_set = true;
3684 fcoe->link_failures = (u16)hst->link_failure_count;
3686 fcoe->fcoe_txq_depth_set = true;
3687 fcoe->fcoe_rxq_depth_set = true;
3688 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3689 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3691 fcoe->fcoe_rx_frames_set = true;
3692 fcoe->fcoe_rx_frames = hst->rx_frames;
3694 fcoe->fcoe_tx_frames_set = true;
3695 fcoe->fcoe_tx_frames = hst->tx_frames;
3697 fcoe->fcoe_rx_bytes_set = true;
3698 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3700 fcoe->fcoe_tx_bytes_set = true;
3701 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3703 fcoe->crc_count_set = true;
3704 fcoe->crc_count = hst->invalid_crc_count;
3706 fcoe->tx_abts_set = true;
3707 fcoe->tx_abts = hst->fcp_packet_aborts;
3709 fcoe->tx_lun_rst_set = true;
3710 fcoe->tx_lun_rst = qedf->lun_resets;
3712 fcoe->abort_task_sets_set = true;
3713 fcoe->abort_task_sets = qedf->packet_aborts;
3715 fcoe->scsi_busy_set = true;
3716 fcoe->scsi_busy = qedf->busy;
3718 fcoe->scsi_tsk_full_set = true;
3719 fcoe->scsi_tsk_full = qedf->task_set_fulls;
3722 /* Generic TLV data callback */
3723 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
3725 struct qedf_ctx *qedf;
3728 QEDF_INFO(NULL, QEDF_LOG_EVT,
3729 "dev is NULL so ignoring get_generic_tlv_data request.\n");
3732 qedf = (struct qedf_ctx *)dev;
3734 memset(data, 0, sizeof(struct qed_generic_tlvs));
3735 ether_addr_copy(data->mac[0], qedf->mac);
3739 * Module Init/Remove
3742 static int __init qedf_init(void)
3746 /* If debug=1 passed, set the default log mask */
3747 if (qedf_debug == QEDF_LOG_DEFAULT)
3748 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3751 * Check that default prio for FIP/FCoE traffic is between 0..7 if a
3752 * value has been set
3754 if (qedf_default_prio > -1)
3755 if (qedf_default_prio > 7) {
3756 qedf_default_prio = QEDF_DEFAULT_PRIO;
3757 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
3761 /* Print driver banner */
3762 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3765 /* Create kmem_cache for qedf_io_work structs */
3766 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3767 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3768 if (qedf_io_work_cache == NULL) {
3769 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3772 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3773 qedf_io_work_cache);
3775 qed_ops = qed_get_fcoe_ops();
3777 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3781 #ifdef CONFIG_DEBUG_FS
3782 qedf_dbg_init("qedf");
3785 qedf_fc_transport_template =
3786 fc_attach_transport(&qedf_fc_transport_fn);
3787 if (!qedf_fc_transport_template) {
3788 QEDF_ERR(NULL, "Could not register with FC transport\n");
3792 qedf_fc_vport_transport_template =
3793 fc_attach_transport(&qedf_fc_vport_transport_fn);
3794 if (!qedf_fc_vport_transport_template) {
3795 QEDF_ERR(NULL, "Could not register vport template with FC "
3800 qedf_io_wq = create_workqueue("qedf_io_wq");
3802 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3806 qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3808 ret = pci_register_driver(&qedf_pci_driver);
3810 QEDF_ERR(NULL, "Failed to register driver\n");
3817 destroy_workqueue(qedf_io_wq);
3819 fc_release_transport(qedf_fc_vport_transport_template);
3821 fc_release_transport(qedf_fc_transport_template);
3823 #ifdef CONFIG_DEBUG_FS
3831 static void __exit qedf_cleanup(void)
3833 pci_unregister_driver(&qedf_pci_driver);
3835 destroy_workqueue(qedf_io_wq);
3837 fc_release_transport(qedf_fc_vport_transport_template);
3838 fc_release_transport(qedf_fc_transport_template);
3839 #ifdef CONFIG_DEBUG_FS
3844 kmem_cache_destroy(qedf_io_work_cache);
3847 MODULE_LICENSE("GPL");
3848 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3849 MODULE_AUTHOR("QLogic Corporation");
3850 MODULE_VERSION(QEDF_VERSION);
3851 module_init(qedf_init);
3852 module_exit(qedf_cleanup);