2 * QLogic FCoE Offload Driver
3 * Copyright (c) 2016-2018 Cavium Inc.
5 * This software is available under the terms of the GNU General Public License
6 * (GPL) Version 2, available from the file COPYING in the main directory of
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/pci.h>
13 #include <linux/device.h>
14 #include <linux/highmem.h>
15 #include <linux/crc32.h>
16 #include <linux/interrupt.h>
17 #include <linux/list.h>
18 #include <linux/kthread.h>
19 #include <scsi/libfc.h>
20 #include <scsi/scsi_host.h>
21 #include <scsi/fc_frame.h>
22 #include <linux/if_ether.h>
23 #include <linux/if_vlan.h>
24 #include <linux/cpu.h>
27 #include <uapi/linux/pci_regs.h>
29 const struct qed_fcoe_ops *qed_ops;
31 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
32 static void qedf_remove(struct pci_dev *pdev);
35 * Driver module parameters.
37 static unsigned int qedf_dev_loss_tmo = 60;
38 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
39 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached "
40 "remote ports (default 60)");
42 uint qedf_debug = QEDF_LOG_INFO;
43 module_param_named(debug, qedf_debug, uint, S_IRUGO);
44 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
47 static uint qedf_fipvlan_retries = 60;
48 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
49 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
50 "before giving up (default 60)");
52 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
53 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
54 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
57 static int qedf_default_prio = -1;
58 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
59 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
60 " traffic (value between 0 and 7, default 3).");
62 uint qedf_dump_frames;
63 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
64 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
67 static uint qedf_queue_depth;
68 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
69 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
70 "by the qedf driver. Default is 0 (use OS default).");
73 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
74 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
75 "into trace buffer. (default off).");
77 static uint qedf_max_lun = MAX_FIBRE_LUNS;
78 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
79 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
80 "supports. (default 0xffffffff)");
82 uint qedf_link_down_tmo;
83 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
84 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
85 "link is down by N seconds.");
87 bool qedf_retry_delay;
88 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
89 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
90 "delay handling (default off).");
92 static bool qedf_dcbx_no_wait;
93 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
94 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
95 "sending FIP VLAN requests on link up (Default: off).");
97 static uint qedf_dp_module;
98 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
99 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
100 "qed module during probe.");
102 static uint qedf_dp_level = QED_LEVEL_NOTICE;
103 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
104 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module "
105 "during probe (0-3: 0 more verbose).");
107 struct workqueue_struct *qedf_io_wq;
109 static struct fcoe_percpu_s qedf_global;
110 static DEFINE_SPINLOCK(qedf_global_lock);
112 static struct kmem_cache *qedf_io_work_cache;
114 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
116 qedf->vlan_id = vlan_id;
117 qedf->vlan_id |= qedf->prio << VLAN_PRIO_SHIFT;
118 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x "
119 "prio=%d.\n", vlan_id, qedf->prio);
122 /* Returns true if we have a valid vlan, false otherwise */
123 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
127 while (qedf->fipvlan_retries--) {
128 /* This is to catch if link goes down during fipvlan retries */
129 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
130 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
134 if (qedf->vlan_id > 0)
137 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
138 "Retry %d.\n", qedf->fipvlan_retries);
139 init_completion(&qedf->fipvlan_compl);
140 qedf_fcoe_send_vlan_req(qedf);
141 rc = wait_for_completion_timeout(&qedf->fipvlan_compl,
144 (atomic_read(&qedf->link_state) == QEDF_LINK_UP)) {
145 fcoe_ctlr_link_up(&qedf->ctlr);
153 static void qedf_handle_link_update(struct work_struct *work)
155 struct qedf_ctx *qedf =
156 container_of(work, struct qedf_ctx, link_update.work);
159 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
160 atomic_read(&qedf->link_state));
162 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
163 rc = qedf_initiate_fipvlan_req(qedf);
167 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
173 * If we get here then we never received a repsonse to our
174 * fip vlan request so set the vlan_id to the default and
175 * tell FCoE that the link is up
177 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
178 "response, falling back to default VLAN %d.\n",
180 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
183 * Zero out data_src_addr so we'll update it with the new
186 eth_zero_addr(qedf->data_src_addr);
187 fcoe_ctlr_link_up(&qedf->ctlr);
188 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
190 * If we hit here and link_down_tmo_valid is still 1 it means
191 * that link_down_tmo timed out so set it to 0 to make sure any
192 * other readers have accurate state.
194 atomic_set(&qedf->link_down_tmo_valid, 0);
195 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
196 "Calling fcoe_ctlr_link_down().\n");
197 fcoe_ctlr_link_down(&qedf->ctlr);
198 if (qedf_wait_for_upload(qedf) == false)
199 QEDF_ERR(&qedf->dbg_ctx,
200 "Could not upload all sessions.\n");
201 /* Reset the number of FIP VLAN retries */
202 qedf->fipvlan_retries = qedf_fipvlan_retries;
206 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1
207 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2
208 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3
209 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
212 struct fc_frame_header *fh = fc_frame_header_get(fp);
216 /* Get granted MAC address from FIP FLOGI payload */
217 granted_mac = fr_cb(fp)->granted_mac;
220 * We set the source MAC for FCoE traffic based on the Granted MAC
221 * address from the switch.
223 * If granted_mac is non-zero, we used that.
224 * If the granted_mac is zeroed out, created the FCoE MAC based on
225 * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
226 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
227 * d_id of the FLOGI frame.
229 if (!is_zero_ether_addr(granted_mac)) {
230 ether_addr_copy(qedf->data_src_addr, granted_mac);
231 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
232 } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
233 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
234 qedf->data_src_addr[0] = fc_map[0];
235 qedf->data_src_addr[1] = fc_map[1];
236 qedf->data_src_addr[2] = fc_map[2];
237 qedf->data_src_addr[3] = fh->fh_d_id[0];
238 qedf->data_src_addr[4] = fh->fh_d_id[1];
239 qedf->data_src_addr[5] = fh->fh_d_id[2];
240 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
242 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
243 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
246 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
247 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
250 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
253 struct fc_exch *exch = fc_seq_exch(seq);
254 struct fc_lport *lport = exch->lp;
255 struct qedf_ctx *qedf = lport_priv(lport);
258 QEDF_ERR(NULL, "qedf is NULL.\n");
263 * If ERR_PTR is set then don't try to stat anything as it will cause
264 * a crash when we access fp.
267 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
268 "fp has IS_ERR() set.\n");
272 /* Log stats for FLOGI reject */
273 if (fc_frame_payload_op(fp) == ELS_LS_RJT)
274 qedf->flogi_failed++;
275 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
276 /* Set the source MAC we will use for FCoE traffic */
277 qedf_set_data_src_addr(qedf, fp);
280 /* Complete flogi_compl so we can proceed to sending ADISCs */
281 complete(&qedf->flogi_compl);
284 /* Report response to libfc */
285 fc_lport_flogi_resp(seq, fp, lport);
288 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
289 struct fc_frame *fp, unsigned int op,
290 void (*resp)(struct fc_seq *,
293 void *arg, u32 timeout)
295 struct qedf_ctx *qedf = lport_priv(lport);
298 * Intercept FLOGI for statistic purposes. Note we use the resp
299 * callback to tell if this is really a flogi.
301 if (resp == fc_lport_flogi_resp) {
303 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
307 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
310 int qedf_send_flogi(struct qedf_ctx *qedf)
312 struct fc_lport *lport;
317 if (!lport->tt.elsct_send)
320 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
322 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
326 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
327 "Sending FLOGI to reestablish session with switch.\n");
328 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
329 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
331 init_completion(&qedf->flogi_compl);
336 struct qedf_tmp_rdata_item {
337 struct fc_rport_priv *rdata;
338 struct list_head list;
342 * This function is called if link_down_tmo is in use. If we get a link up and
343 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
344 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up().
346 static void qedf_link_recovery(struct work_struct *work)
348 struct qedf_ctx *qedf =
349 container_of(work, struct qedf_ctx, link_recovery.work);
350 struct qedf_rport *fcport;
351 struct fc_rport_priv *rdata;
352 struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item;
356 struct list_head rdata_login_list;
358 INIT_LIST_HEAD(&rdata_login_list);
360 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
361 "Link down tmo did not expire.\n");
364 * Essentially reset the fcoe_ctlr here without affecting the state
365 * of the libfc structs.
367 qedf->ctlr.state = FIP_ST_LINK_WAIT;
368 fcoe_ctlr_link_down(&qedf->ctlr);
371 * Bring the link up before we send the fipvlan request so libfcoe
372 * can select a new fcf in parallel
374 fcoe_ctlr_link_up(&qedf->ctlr);
376 /* Since the link when down and up to verify which vlan we're on */
377 qedf->fipvlan_retries = qedf_fipvlan_retries;
378 rc = qedf_initiate_fipvlan_req(qedf);
379 /* If getting the VLAN fails, set the VLAN to the fallback one */
381 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
384 * We need to wait for an FCF to be selected due to the
385 * fcoe_ctlr_link_up other the FLOGI will be rejected.
387 while (retries > 0) {
388 if (qedf->ctlr.sel_fcf) {
389 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
390 "FCF reselected, proceeding with FLOGI.\n");
398 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
403 rval = qedf_send_flogi(qedf);
407 /* Wait for FLOGI completion before proceeding with sending ADISCs */
408 i = wait_for_completion_timeout(&qedf->flogi_compl,
409 qedf->lport->r_a_tov);
411 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
416 * Call lport->tt.rport_login which will cause libfc to send an
417 * ADISC since the rport is in state ready.
420 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
421 rdata = fcport->rdata;
424 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item),
428 if (kref_get_unless_zero(&rdata->kref)) {
429 rdata_item->rdata = rdata;
430 list_add(&rdata_item->list, &rdata_login_list);
436 * Do the fc_rport_login outside of the rcu lock so we don't take a
437 * mutex in an atomic context.
439 list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list,
441 list_del(&rdata_item->list);
442 fc_rport_login(rdata_item->rdata);
443 kref_put(&rdata_item->rdata->kref, fc_rport_destroy);
448 static void qedf_update_link_speed(struct qedf_ctx *qedf,
449 struct qed_link_output *link)
451 struct fc_lport *lport = qedf->lport;
453 lport->link_speed = FC_PORTSPEED_UNKNOWN;
454 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
456 /* Set fc_host link speed */
457 switch (link->speed) {
459 lport->link_speed = FC_PORTSPEED_10GBIT;
462 lport->link_speed = FC_PORTSPEED_25GBIT;
465 lport->link_speed = FC_PORTSPEED_40GBIT;
468 lport->link_speed = FC_PORTSPEED_50GBIT;
471 lport->link_speed = FC_PORTSPEED_100GBIT;
474 lport->link_speed = FC_PORTSPEED_UNKNOWN;
479 * Set supported link speed by querying the supported
480 * capabilities of the link.
482 if (link->supported_caps & SUPPORTED_10000baseKR_Full)
483 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
484 if (link->supported_caps & SUPPORTED_25000baseKR_Full)
485 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
486 if (link->supported_caps & SUPPORTED_40000baseLR4_Full)
487 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
488 if (link->supported_caps & SUPPORTED_50000baseKR2_Full)
489 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
490 if (link->supported_caps & SUPPORTED_100000baseKR4_Full)
491 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
492 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
495 static void qedf_link_update(void *dev, struct qed_link_output *link)
497 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
500 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
501 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
502 "Ignoring link up event as link is already up.\n");
505 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
508 /* Cancel any pending link down work */
509 cancel_delayed_work(&qedf->link_update);
511 atomic_set(&qedf->link_state, QEDF_LINK_UP);
512 qedf_update_link_speed(qedf, link);
514 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
516 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
518 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
519 queue_delayed_work(qedf->link_update_wq,
520 &qedf->link_recovery, 0);
522 queue_delayed_work(qedf->link_update_wq,
523 &qedf->link_update, 0);
524 atomic_set(&qedf->link_down_tmo_valid, 0);
528 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
530 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
531 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
533 * Flag that we're waiting for the link to come back up before
534 * informing the fcoe layer of the event.
536 if (qedf_link_down_tmo > 0) {
537 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
538 "Starting link down tmo.\n");
539 atomic_set(&qedf->link_down_tmo_valid, 1);
542 qedf_update_link_speed(qedf, link);
543 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
544 qedf_link_down_tmo * HZ);
549 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
551 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
554 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
555 "prio=%d.\n", get->operational.valid, get->operational.enabled,
556 get->operational.app_prio.fcoe);
558 if (get->operational.enabled && get->operational.valid) {
559 /* If DCBX was already negotiated on link up then just exit */
560 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
561 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
562 "DCBX already set on link up.\n");
566 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
569 * Set the 8021q priority in the following manner:
571 * 1. If a modparam is set use that
572 * 2. If the value is not between 0..7 use the default
573 * 3. Use the priority we get from the DCBX app tag
575 tmp_prio = get->operational.app_prio.fcoe;
576 if (qedf_default_prio > -1)
577 qedf->prio = qedf_default_prio;
578 else if (tmp_prio < 0 || tmp_prio > 7) {
579 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
580 "FIP/FCoE prio %d out of range, setting to %d.\n",
581 tmp_prio, QEDF_DEFAULT_PRIO);
582 qedf->prio = QEDF_DEFAULT_PRIO;
584 qedf->prio = tmp_prio;
586 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
587 !qedf_dcbx_no_wait) {
588 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
589 queue_delayed_work(qedf->link_update_wq,
590 &qedf->link_recovery, 0);
592 queue_delayed_work(qedf->link_update_wq,
593 &qedf->link_update, 0);
594 atomic_set(&qedf->link_down_tmo_valid, 0);
600 static u32 qedf_get_login_failures(void *cookie)
602 struct qedf_ctx *qedf;
604 qedf = (struct qedf_ctx *)cookie;
605 return qedf->flogi_failed;
608 static struct qed_fcoe_cb_ops qedf_cb_ops = {
610 .link_update = qedf_link_update,
611 .dcbx_aen = qedf_dcbx_handler,
612 .get_generic_tlv_data = qedf_get_generic_tlv_data,
613 .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
618 * Various transport templates.
621 static struct scsi_transport_template *qedf_fc_transport_template;
622 static struct scsi_transport_template *qedf_fc_vport_transport_template;
627 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
629 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
630 struct fc_lport *lport;
631 struct qedf_ctx *qedf;
632 struct qedf_ioreq *io_req;
633 struct fc_rport_libfc_priv *rp = rport->dd_data;
634 struct fc_rport_priv *rdata;
635 struct qedf_rport *fcport = NULL;
637 int wait_count = 100;
642 lport = shost_priv(sc_cmd->device->host);
643 qedf = (struct qedf_ctx *)lport_priv(lport);
645 /* rport and tgt are allocated together, so tgt should be non-NULL */
646 fcport = (struct qedf_rport *)&rp[1];
647 rdata = fcport->rdata;
648 if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
649 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
655 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
657 QEDF_ERR(&qedf->dbg_ctx,
658 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
659 sc_cmd, sc_cmd->cmnd[0],
662 goto drop_rdata_kref;
665 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
669 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
670 if (!rval || io_req->sc_cmd != sc_cmd) {
671 QEDF_ERR(&qedf->dbg_ctx,
672 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
673 io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
675 goto drop_rdata_kref;
678 if (fc_remote_port_chkready(rport)) {
679 refcount = kref_read(&io_req->refcount);
680 QEDF_ERR(&qedf->dbg_ctx,
681 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
682 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
683 refcount, rdata->ids.port_id);
685 goto drop_rdata_kref;
688 rc = fc_block_scsi_eh(sc_cmd);
690 goto drop_rdata_kref;
692 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
693 QEDF_ERR(&qedf->dbg_ctx,
694 "Connection uploading, xid=0x%x., port_id=%06x\n",
695 io_req->xid, rdata->ids.port_id);
696 while (io_req->sc_cmd && (wait_count != 0)) {
701 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
704 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
707 goto drop_rdata_kref;
710 if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
711 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
712 goto drop_rdata_kref;
715 QEDF_ERR(&qedf->dbg_ctx,
716 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
717 io_req, sc_cmd, io_req->xid, io_req->fp_idx,
720 if (qedf->stop_io_on_error) {
721 qedf_stop_all_io(qedf);
723 goto drop_rdata_kref;
726 init_completion(&io_req->abts_done);
727 rval = qedf_initiate_abts(io_req, true);
729 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
731 * If we fail to queue the ABTS then return this command to
732 * the SCSI layer as it will own and free the xid
735 qedf_scsi_done(qedf, io_req, DID_ERROR);
736 goto drop_rdata_kref;
739 wait_for_completion(&io_req->abts_done);
741 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
742 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
743 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
745 * If we get a reponse to the abort this is success from
746 * the perspective that all references to the command have
747 * been removed from the driver and firmware
751 /* If the abort and cleanup failed then return a failure */
756 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
759 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
763 kref_put(&rdata->kref, fc_rport_destroy);
766 kref_put(&io_req->refcount, qedf_release_cmd);
770 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
772 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
773 sc_cmd->device->host->host_no, sc_cmd->device->id,
774 sc_cmd->device->lun);
775 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
778 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
780 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
781 sc_cmd->device->host->host_no, sc_cmd->device->id,
782 sc_cmd->device->lun);
783 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
786 bool qedf_wait_for_upload(struct qedf_ctx *qedf)
788 struct qedf_rport *fcport = NULL;
792 if (atomic_read(&qedf->num_offloads))
793 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
794 "Waiting for all uploads to complete num_offloads = 0x%x.\n",
795 atomic_read(&qedf->num_offloads));
802 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
803 if (fcport && test_bit(QEDF_RPORT_SESSION_READY,
806 QEDF_ERR(&qedf->dbg_ctx,
807 "Waiting for fcport %p portid=%06x.\n",
808 fcport, fcport->rdata->ids.port_id);
810 QEDF_ERR(&qedf->dbg_ctx,
811 "Waiting for fcport %p.\n", fcport);
819 /* Performs soft reset of qedf_ctx by simulating a link down/up */
820 void qedf_ctx_soft_reset(struct fc_lport *lport)
822 struct qedf_ctx *qedf;
823 struct qed_link_output if_link;
826 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
830 qedf = lport_priv(lport);
832 /* For host reset, essentially do a soft link up/down */
833 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
834 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
835 "Queuing link down work.\n");
836 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
839 if (qedf_wait_for_upload(qedf) == false) {
840 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
841 WARN_ON(atomic_read(&qedf->num_offloads));
844 /* Before setting link up query physical link state */
845 qed_ops->common->get_link(qedf->cdev, &if_link);
846 /* Bail if the physical link is not up */
847 if (!if_link.link_up) {
848 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
849 "Physical link is not up.\n");
852 /* Flush and wait to make sure link down is processed */
853 flush_delayed_work(&qedf->link_update);
856 atomic_set(&qedf->link_state, QEDF_LINK_UP);
858 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
859 "Queue link up work.\n");
860 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
864 /* Reset the host by gracefully logging out and then logging back in */
865 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
867 struct fc_lport *lport;
868 struct qedf_ctx *qedf;
870 lport = shost_priv(sc_cmd->device->host);
871 qedf = lport_priv(lport);
873 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
874 test_bit(QEDF_UNLOADING, &qedf->flags))
877 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
879 qedf_ctx_soft_reset(lport);
884 static int qedf_slave_configure(struct scsi_device *sdev)
886 if (qedf_queue_depth) {
887 scsi_change_queue_depth(sdev, qedf_queue_depth);
893 static struct scsi_host_template qedf_host_template = {
894 .module = THIS_MODULE,
895 .name = QEDF_MODULE_NAME,
898 .max_sectors = 0xffff,
899 .queuecommand = qedf_queuecommand,
900 .shost_attrs = qedf_host_attrs,
901 .eh_abort_handler = qedf_eh_abort,
902 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
903 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
904 .eh_host_reset_handler = qedf_eh_host_reset,
905 .slave_configure = qedf_slave_configure,
906 .dma_boundary = QED_HW_DMA_BOUNDARY,
907 .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
908 .can_queue = FCOE_PARAMS_NUM_TASKS,
909 .change_queue_depth = scsi_change_queue_depth,
912 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
916 spin_lock(&qedf_global_lock);
917 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
918 spin_unlock(&qedf_global_lock);
923 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
925 struct qedf_rport *fcport;
926 struct fc_rport_priv *rdata;
929 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
930 rdata = fcport->rdata;
933 if (rdata->ids.port_id == port_id) {
940 /* Return NULL to caller to let them know fcport was not found */
944 /* Transmits an ELS frame over an offloaded session */
945 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
947 struct fc_frame_header *fh;
950 fh = fc_frame_header_get(fp);
951 if ((fh->fh_type == FC_TYPE_ELS) &&
952 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
953 switch (fc_frame_payload_op(fp)) {
955 qedf_send_adisc(fcport, fp);
965 * qedf_xmit - qedf FCoE frame transmit function
968 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
970 struct fc_lport *base_lport;
971 struct qedf_ctx *qedf;
973 struct fcoe_crc_eof *cp;
975 struct fc_frame_header *fh;
979 unsigned int hlen, tlen, elen;
981 struct fc_stats *stats;
982 struct fc_lport *tmp_lport;
983 struct fc_lport *vn_port = NULL;
984 struct qedf_rport *fcport;
988 qedf = (struct qedf_ctx *)lport_priv(lport);
990 fh = fc_frame_header_get(fp);
993 /* Filter out traffic to other NPIV ports on the same host */
995 base_lport = shost_priv(vport_to_shost(lport->vport));
999 /* Flag if the destination is the base port */
1000 if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
1001 vn_port = base_lport;
1003 /* Got through the list of vports attached to the base_lport
1004 * and see if we have a match with the destination address.
1006 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
1007 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
1008 vn_port = tmp_lport;
1013 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
1014 struct fc_rport_priv *rdata = NULL;
1016 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
1017 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
1019 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
1021 rdata->retries = lport->max_rport_retry_count;
1022 kref_put(&rdata->kref, fc_rport_destroy);
1026 /* End NPIV filtering */
1028 if (!qedf->ctlr.sel_fcf) {
1033 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
1034 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
1039 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
1040 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
1045 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1046 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
1050 /* Check to see if this needs to be sent on an offloaded session */
1051 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
1053 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1054 rc = qedf_xmit_l2_frame(fcport, fp);
1056 * If the frame was successfully sent over the middle path
1057 * then do not try to also send it over the LL2 path
1066 elen = sizeof(struct ethhdr);
1067 hlen = sizeof(struct fcoe_hdr);
1068 tlen = sizeof(struct fcoe_crc_eof);
1069 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
1071 skb->ip_summed = CHECKSUM_NONE;
1072 crc = fcoe_fc_crc(fp);
1074 /* copy port crc and eof to the skb buff */
1075 if (skb_is_nonlinear(skb)) {
1078 if (qedf_get_paged_crc_eof(skb, tlen)) {
1082 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
1083 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
1085 cp = skb_put(skb, tlen);
1088 memset(cp, 0, sizeof(*cp));
1090 cp->fcoe_crc32 = cpu_to_le32(~crc);
1091 if (skb_is_nonlinear(skb)) {
1097 /* adjust skb network/transport offsets to match mac/fcoe/port */
1098 skb_push(skb, elen + hlen);
1099 skb_reset_mac_header(skb);
1100 skb_reset_network_header(skb);
1101 skb->mac_len = elen;
1102 skb->protocol = htons(ETH_P_FCOE);
1105 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
1106 * for FIP/FCoE traffic.
1108 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
1110 /* fill up mac and fcoe headers */
1112 eh->h_proto = htons(ETH_P_FCOE);
1113 if (qedf->ctlr.map_dest)
1114 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1116 /* insert GW address */
1117 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1119 /* Set the source MAC address */
1120 ether_addr_copy(eh->h_source, qedf->data_src_addr);
1122 hp = (struct fcoe_hdr *)(eh + 1);
1123 memset(hp, 0, sizeof(*hp));
1125 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1128 /*update tx stats */
1129 stats = per_cpu_ptr(lport->stats, get_cpu());
1131 stats->TxWords += wlen;
1134 /* Get VLAN ID from skb for printing purposes */
1135 __vlan_hwaccel_get_tag(skb, &vlan_tci);
1137 /* send down to lld */
1139 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1140 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1141 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1143 if (qedf_dump_frames)
1144 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1145 1, skb->data, skb->len, false);
1146 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1148 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1156 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1163 /* Calculate appropriate queue and PBL sizes */
1164 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1165 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1166 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1168 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1170 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1171 &fcport->sq_dma, GFP_KERNEL);
1173 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1178 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1179 fcport->sq_pbl_size,
1180 &fcport->sq_pbl_dma, GFP_KERNEL);
1181 if (!fcport->sq_pbl) {
1182 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1188 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1189 page = fcport->sq_dma;
1190 pbl = (u32 *)fcport->sq_pbl;
1192 while (num_pages--) {
1193 *pbl = U64_LO(page);
1195 *pbl = U64_HI(page);
1197 page += QEDF_PAGE_SIZE;
1203 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1209 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1212 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1213 fcport->sq_pbl, fcport->sq_pbl_dma);
1215 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1216 fcport->sq, fcport->sq_dma);
1219 static int qedf_offload_connection(struct qedf_ctx *qedf,
1220 struct qedf_rport *fcport)
1222 struct qed_fcoe_params_offload conn_info;
1225 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1227 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1228 "portid=%06x.\n", fcport->rdata->ids.port_id);
1229 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1230 &fcport->fw_cid, &fcport->p_doorbell);
1232 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1233 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1234 rval = 1; /* For some reason qed returns 0 on failure here */
1238 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1239 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1240 fcport->fw_cid, fcport->handle);
1242 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1244 /* Fill in the offload connection info */
1245 conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1247 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1248 conn_info.sq_next_page_addr =
1249 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1251 /* Need to use our FCoE MAC for the offload session */
1252 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1254 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1256 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1257 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1258 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1259 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1262 conn_info.vlan_tag = qedf->vlan_id <<
1263 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1264 conn_info.vlan_tag |=
1265 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1266 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1267 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1269 /* Set host port source id */
1270 port_id = fc_host_port_id(qedf->lport->host);
1271 fcport->sid = port_id;
1272 conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1273 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1274 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1276 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1278 /* Set remote port destination id */
1279 port_id = fcport->rdata->rport->port_id;
1280 conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1281 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1282 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1284 conn_info.def_q_idx = 0; /* Default index for send queue? */
1286 /* Set FC-TAPE specific flags if needed */
1287 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1288 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1289 "Enable CONF, REC for portid=%06x.\n",
1290 fcport->rdata->ids.port_id);
1291 conn_info.flags |= 1 <<
1292 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1294 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1295 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1298 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1300 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1301 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1304 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1305 "succeeded portid=%06x total_sqe=%d.\n",
1306 fcport->rdata->ids.port_id, total_sqe);
1308 spin_lock_init(&fcport->rport_lock);
1309 atomic_set(&fcport->free_sqes, total_sqe);
1312 qed_ops->release_conn(qedf->cdev, fcport->handle);
1317 #define QEDF_TERM_BUFF_SIZE 10
1318 static void qedf_upload_connection(struct qedf_ctx *qedf,
1319 struct qedf_rport *fcport)
1322 dma_addr_t term_params_dma;
1324 /* Term params needs to be a DMA coherent buffer as qed shared the
1325 * physical DMA address with the firmware. The buffer may be used in
1326 * the receive path so we may eventually have to move this.
1328 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1329 &term_params_dma, GFP_KERNEL);
1331 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1332 "port_id=%06x.\n", fcport->rdata->ids.port_id);
1334 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1335 qed_ops->release_conn(qedf->cdev, fcport->handle);
1337 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1341 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1342 struct qedf_rport *fcport)
1344 struct fc_rport_priv *rdata = fcport->rdata;
1346 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1347 fcport->rdata->ids.port_id);
1349 /* Flush any remaining i/o's before we upload the connection */
1350 qedf_flush_active_ios(fcport, -1);
1352 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1353 qedf_upload_connection(qedf, fcport);
1354 qedf_free_sq(qedf, fcport);
1355 fcport->rdata = NULL;
1356 fcport->qedf = NULL;
1357 kref_put(&rdata->kref, fc_rport_destroy);
1361 * This event_callback is called after successful completion of libfc
1362 * initiated target login. qedf can proceed with initiating the session
1365 static void qedf_rport_event_handler(struct fc_lport *lport,
1366 struct fc_rport_priv *rdata,
1367 enum fc_rport_event event)
1369 struct qedf_ctx *qedf = lport_priv(lport);
1370 struct fc_rport *rport = rdata->rport;
1371 struct fc_rport_libfc_priv *rp;
1372 struct qedf_rport *fcport;
1375 unsigned long flags;
1377 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1378 "port_id = 0x%x\n", event, rdata->ids.port_id);
1381 case RPORT_EV_READY:
1383 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1387 rp = rport->dd_data;
1388 fcport = (struct qedf_rport *)&rp[1];
1389 fcport->qedf = qedf;
1391 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1392 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1393 "portid=0x%x as max number of offloaded sessions "
1394 "reached.\n", rdata->ids.port_id);
1399 * Don't try to offload the session again. Can happen when we
1402 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1403 QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1404 "offloaded, portid=0x%x.\n",
1405 rdata->ids.port_id);
1409 if (rport->port_id == FC_FID_DIR_SERV) {
1411 * qedf_rport structure doesn't exist for
1413 * We should not come here, as lport will
1414 * take care of fabric login
1416 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1417 "exist for dir server port_id=%x\n",
1418 rdata->ids.port_id);
1422 if (rdata->spp_type != FC_TYPE_FCP) {
1423 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1424 "Not offloading since spp type isn't FCP\n");
1427 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1428 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1429 "Not FCP target so not offloading\n");
1433 /* Initial reference held on entry, so this can't fail */
1434 kref_get(&rdata->kref);
1435 fcport->rdata = rdata;
1436 fcport->rport = rport;
1438 rval = qedf_alloc_sq(qedf, fcport);
1440 qedf_cleanup_fcport(qedf, fcport);
1444 /* Set device type */
1445 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1446 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1447 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1448 fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1449 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1450 "portid=%06x is a TAPE device.\n",
1451 rdata->ids.port_id);
1453 fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1456 rval = qedf_offload_connection(qedf, fcport);
1458 qedf_cleanup_fcport(qedf, fcport);
1462 /* Add fcport to list of qedf_ctx list of offloaded ports */
1463 spin_lock_irqsave(&qedf->hba_lock, flags);
1464 list_add_rcu(&fcport->peers, &qedf->fcports);
1465 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1468 * Set the session ready bit to let everyone know that this
1469 * connection is ready for I/O
1471 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1472 atomic_inc(&qedf->num_offloads);
1476 case RPORT_EV_FAILED:
1478 port_id = rdata->ids.port_id;
1479 if (port_id == FC_FID_DIR_SERV)
1483 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1484 "port_id=%x - rport notcreated Yet!!\n", port_id);
1487 rp = rport->dd_data;
1489 * Perform session upload. Note that rdata->peers is already
1490 * removed from disc->rports list before we get this event.
1492 fcport = (struct qedf_rport *)&rp[1];
1494 spin_lock_irqsave(&fcport->rport_lock, flags);
1495 /* Only free this fcport if it is offloaded already */
1496 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
1497 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1499 set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1501 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1502 qedf_cleanup_fcport(qedf, fcport);
1504 * Remove fcport to list of qedf_ctx list of offloaded
1507 spin_lock_irqsave(&qedf->hba_lock, flags);
1508 list_del_rcu(&fcport->peers);
1509 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1511 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1513 atomic_dec(&qedf->num_offloads);
1515 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1524 static void qedf_abort_io(struct fc_lport *lport)
1526 /* NO-OP but need to fill in the template */
1529 static void qedf_fcp_cleanup(struct fc_lport *lport)
1532 * NO-OP but need to fill in template to prevent a NULL
1533 * function pointer dereference during link down. I/Os
1534 * will be flushed when port is uploaded.
1538 static struct libfc_function_template qedf_lport_template = {
1539 .frame_send = qedf_xmit,
1540 .fcp_abort_io = qedf_abort_io,
1541 .fcp_cleanup = qedf_fcp_cleanup,
1542 .rport_event_callback = qedf_rport_event_handler,
1543 .elsct_send = qedf_elsct_send,
1546 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1548 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1550 qedf->ctlr.send = qedf_fip_send;
1551 qedf->ctlr.get_src_addr = qedf_get_src_mac;
1552 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1555 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1557 struct fc_lport *lport = qedf->lport;
1558 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1563 * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1565 lport->fdmi_enabled = 1;
1568 * Setup the necessary fc_host attributes to that will be used to fill
1569 * in the FDMI information.
1572 /* Get the PCI-e Device Serial Number Capability */
1573 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1576 for (i = 0; i < 8; i++)
1577 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1579 snprintf(fc_host->serial_number,
1580 sizeof(fc_host->serial_number),
1581 "%02X%02X%02X%02X%02X%02X%02X%02X",
1582 buf[7], buf[6], buf[5], buf[4],
1583 buf[3], buf[2], buf[1], buf[0]);
1585 snprintf(fc_host->serial_number,
1586 sizeof(fc_host->serial_number), "Unknown");
1588 snprintf(fc_host->manufacturer,
1589 sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1591 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1593 snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1594 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1597 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1598 "Rev %d", qedf->pdev->revision);
1600 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1601 "%s", QEDF_VERSION);
1603 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1604 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1605 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1608 static int qedf_lport_setup(struct qedf_ctx *qedf)
1610 struct fc_lport *lport = qedf->lport;
1613 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1614 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1615 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1616 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1617 lport->boot_time = jiffies;
1618 lport->e_d_tov = 2 * 1000;
1619 lport->r_a_tov = 10 * 1000;
1621 /* Set NPIV support */
1622 lport->does_npiv = 1;
1623 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1625 fc_set_wwnn(lport, qedf->wwnn);
1626 fc_set_wwpn(lport, qedf->wwpn);
1628 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
1629 QEDF_ERR(&qedf->dbg_ctx,
1630 "fcoe_libfc_config failed.\n");
1634 /* Allocate the exchange manager */
1635 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1638 if (fc_lport_init_stats(lport))
1641 /* Finish lport config */
1642 fc_lport_config(lport);
1644 /* Set max frame size */
1645 fc_set_mfs(lport, QEDF_MFS);
1646 fc_host_maxframe_size(lport->host) = lport->mfs;
1648 /* Set default dev_loss_tmo based on module parameter */
1649 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1651 /* Set symbolic node name */
1652 snprintf(fc_host_symbolic_name(lport->host), 256,
1653 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1655 qedf_setup_fdmi(qedf);
1664 static int qedf_vport_libfc_config(struct fc_vport *vport,
1665 struct fc_lport *lport)
1669 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1670 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1671 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1672 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1673 lport->boot_time = jiffies;
1674 lport->e_d_tov = 2 * 1000;
1675 lport->r_a_tov = 10 * 1000;
1676 lport->does_npiv = 1; /* Temporary until we add NPIV support */
1678 /* Allocate stats for vport */
1679 if (fc_lport_init_stats(lport))
1682 /* Finish lport config */
1683 fc_lport_config(lport);
1685 /* offload related configuration */
1686 lport->crc_offload = 0;
1687 lport->seq_offload = 0;
1688 lport->lro_enabled = 0;
1695 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1697 struct Scsi_Host *shost = vport_to_shost(vport);
1698 struct fc_lport *n_port = shost_priv(shost);
1699 struct fc_lport *vn_port;
1700 struct qedf_ctx *base_qedf = lport_priv(n_port);
1701 struct qedf_ctx *vport_qedf;
1706 rc = fcoe_validate_vport_create(vport);
1708 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1709 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1710 "WWPN (0x%s) already exists.\n", buf);
1714 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1715 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1716 "because link is not up.\n");
1721 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1723 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1729 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1730 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1733 /* Copy some fields from base_qedf */
1734 vport_qedf = lport_priv(vn_port);
1735 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1737 /* Set qedf data specific to this vport */
1738 vport_qedf->lport = vn_port;
1739 /* Use same hba_lock as base_qedf */
1740 vport_qedf->hba_lock = base_qedf->hba_lock;
1741 vport_qedf->pdev = base_qedf->pdev;
1742 vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1743 init_completion(&vport_qedf->flogi_compl);
1744 INIT_LIST_HEAD(&vport_qedf->fcports);
1746 rc = qedf_vport_libfc_config(vport, vn_port);
1748 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1749 "for lport stats.\n");
1753 fc_set_wwnn(vn_port, vport->node_name);
1754 fc_set_wwpn(vn_port, vport->port_name);
1755 vport_qedf->wwnn = vn_port->wwnn;
1756 vport_qedf->wwpn = vn_port->wwpn;
1758 vn_port->host->transportt = qedf_fc_vport_transport_template;
1759 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1760 vn_port->host->max_lun = qedf_max_lun;
1761 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1762 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1764 rc = scsi_add_host(vn_port->host, &vport->dev);
1766 QEDF_WARN(&base_qedf->dbg_ctx,
1767 "Error adding Scsi_Host rc=0x%x.\n", rc);
1771 /* Set default dev_loss_tmo based on module parameter */
1772 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1774 /* Init libfc stuffs */
1775 memcpy(&vn_port->tt, &qedf_lport_template,
1776 sizeof(qedf_lport_template));
1777 fc_exch_init(vn_port);
1778 fc_elsct_init(vn_port);
1779 fc_lport_init(vn_port);
1780 fc_disc_init(vn_port);
1781 fc_disc_config(vn_port, vn_port);
1784 /* Allocate the exchange manager */
1785 shost = vport_to_shost(vport);
1786 n_port = shost_priv(shost);
1787 fc_exch_mgr_list_clone(n_port, vn_port);
1789 /* Set max frame size */
1790 fc_set_mfs(vn_port, QEDF_MFS);
1792 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1795 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1797 vn_port->boot_time = jiffies;
1798 fc_fabric_login(vn_port);
1799 fc_vport_setlink(vn_port);
1802 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1805 /* Set up debug context for vport */
1806 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1807 vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1810 scsi_host_put(vn_port->host);
1815 static int qedf_vport_destroy(struct fc_vport *vport)
1817 struct Scsi_Host *shost = vport_to_shost(vport);
1818 struct fc_lport *n_port = shost_priv(shost);
1819 struct fc_lport *vn_port = vport->dd_data;
1820 struct qedf_ctx *qedf = lport_priv(vn_port);
1823 QEDF_ERR(NULL, "qedf is NULL.\n");
1827 /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1828 set_bit(QEDF_UNLOADING, &qedf->flags);
1830 mutex_lock(&n_port->lp_mutex);
1831 list_del(&vn_port->list);
1832 mutex_unlock(&n_port->lp_mutex);
1834 fc_fabric_logoff(vn_port);
1835 fc_lport_destroy(vn_port);
1837 /* Detach from scsi-ml */
1838 fc_remove_host(vn_port->host);
1839 scsi_remove_host(vn_port->host);
1842 * Only try to release the exchange manager if the vn_port
1843 * configuration is complete.
1845 if (vn_port->state == LPORT_ST_READY)
1846 fc_exch_mgr_free(vn_port);
1848 /* Free memory used by statistical counters */
1849 fc_lport_free_stats(vn_port);
1851 /* Release Scsi_Host */
1853 scsi_host_put(vn_port->host);
1859 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1861 struct fc_lport *lport = vport->dd_data;
1864 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1865 fc_fabric_logoff(lport);
1867 lport->boot_time = jiffies;
1868 fc_fabric_login(lport);
1869 fc_vport_setlink(lport);
1875 * During removal we need to wait for all the vports associated with a port
1876 * to be destroyed so we avoid a race condition where libfc is still trying
1877 * to reap vports while the driver remove function has already reaped the
1878 * driver contexts associated with the physical port.
1880 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1882 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1884 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1886 while (fc_host->npiv_vports_inuse > 0) {
1887 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1888 "Waiting for all vports to be reaped.\n");
1894 * qedf_fcoe_reset - Resets the fcoe
1896 * @shost: shost the reset is from
1900 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1902 struct fc_lport *lport = shost_priv(shost);
1904 qedf_ctx_soft_reset(lport);
1908 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1911 struct fc_host_statistics *qedf_stats;
1912 struct fc_lport *lport = shost_priv(shost);
1913 struct qedf_ctx *qedf = lport_priv(lport);
1914 struct qed_fcoe_stats *fw_fcoe_stats;
1916 qedf_stats = fc_get_host_stats(shost);
1918 /* We don't collect offload stats for specific NPIV ports */
1922 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1923 if (!fw_fcoe_stats) {
1924 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1925 "fw_fcoe_stats.\n");
1929 mutex_lock(&qedf->stats_mutex);
1931 /* Query firmware for offload stats */
1932 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1935 * The expectation is that we add our offload stats to the stats
1936 * being maintained by libfc each time the fc_get_host_status callback
1937 * is invoked. The additions are not carried over for each call to
1938 * the fc_get_host_stats callback.
1940 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1941 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1942 fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1943 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1944 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1945 fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1946 qedf_stats->fcp_input_megabytes +=
1947 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1948 qedf_stats->fcp_output_megabytes +=
1949 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1950 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1951 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1952 qedf_stats->invalid_crc_count +=
1953 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1954 qedf_stats->dumped_frames =
1955 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1956 qedf_stats->error_frames +=
1957 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1958 qedf_stats->fcp_input_requests += qedf->input_requests;
1959 qedf_stats->fcp_output_requests += qedf->output_requests;
1960 qedf_stats->fcp_control_requests += qedf->control_requests;
1961 qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1962 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1964 mutex_unlock(&qedf->stats_mutex);
1965 kfree(fw_fcoe_stats);
1970 static struct fc_function_template qedf_fc_transport_fn = {
1971 .show_host_node_name = 1,
1972 .show_host_port_name = 1,
1973 .show_host_supported_classes = 1,
1974 .show_host_supported_fc4s = 1,
1975 .show_host_active_fc4s = 1,
1976 .show_host_maxframe_size = 1,
1978 .show_host_port_id = 1,
1979 .show_host_supported_speeds = 1,
1980 .get_host_speed = fc_get_host_speed,
1981 .show_host_speed = 1,
1982 .show_host_port_type = 1,
1983 .get_host_port_state = fc_get_host_port_state,
1984 .show_host_port_state = 1,
1985 .show_host_symbolic_name = 1,
1988 * Tell FC transport to allocate enough space to store the backpointer
1989 * for the associate qedf_rport struct.
1991 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1992 sizeof(struct qedf_rport)),
1993 .show_rport_maxframe_size = 1,
1994 .show_rport_supported_classes = 1,
1995 .show_host_fabric_name = 1,
1996 .show_starget_node_name = 1,
1997 .show_starget_port_name = 1,
1998 .show_starget_port_id = 1,
1999 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2000 .show_rport_dev_loss_tmo = 1,
2001 .get_fc_host_stats = qedf_fc_get_host_stats,
2002 .issue_fc_host_lip = qedf_fcoe_reset,
2003 .vport_create = qedf_vport_create,
2004 .vport_delete = qedf_vport_destroy,
2005 .vport_disable = qedf_vport_disable,
2006 .bsg_request = fc_lport_bsg_request,
2009 static struct fc_function_template qedf_fc_vport_transport_fn = {
2010 .show_host_node_name = 1,
2011 .show_host_port_name = 1,
2012 .show_host_supported_classes = 1,
2013 .show_host_supported_fc4s = 1,
2014 .show_host_active_fc4s = 1,
2015 .show_host_maxframe_size = 1,
2016 .show_host_port_id = 1,
2017 .show_host_supported_speeds = 1,
2018 .get_host_speed = fc_get_host_speed,
2019 .show_host_speed = 1,
2020 .show_host_port_type = 1,
2021 .get_host_port_state = fc_get_host_port_state,
2022 .show_host_port_state = 1,
2023 .show_host_symbolic_name = 1,
2024 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2025 sizeof(struct qedf_rport)),
2026 .show_rport_maxframe_size = 1,
2027 .show_rport_supported_classes = 1,
2028 .show_host_fabric_name = 1,
2029 .show_starget_node_name = 1,
2030 .show_starget_port_name = 1,
2031 .show_starget_port_id = 1,
2032 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2033 .show_rport_dev_loss_tmo = 1,
2034 .get_fc_host_stats = fc_get_host_stats,
2035 .issue_fc_host_lip = qedf_fcoe_reset,
2036 .bsg_request = fc_lport_bsg_request,
2039 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2041 struct qedf_ctx *qedf = fp->qedf;
2042 struct global_queue *que;
2043 struct qed_sb_info *sb_info = fp->sb_info;
2044 struct status_block_e4 *sb = sb_info->sb_virt;
2047 /* Get the pointer to the global CQ this completion is on */
2048 que = qedf->global_queues[fp->sb_id];
2050 /* Be sure all responses have been written to PI */
2053 /* Get the current firmware producer index */
2054 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2056 return (que->cq_prod_idx != prod_idx);
2060 * Interrupt handler code.
2063 /* Process completion queue and copy CQE contents for deferred processesing
2065 * Return true if we should wake the I/O thread, false if not.
2067 static bool qedf_process_completions(struct qedf_fastpath *fp)
2069 struct qedf_ctx *qedf = fp->qedf;
2070 struct qed_sb_info *sb_info = fp->sb_info;
2071 struct status_block_e4 *sb = sb_info->sb_virt;
2072 struct global_queue *que;
2074 struct fcoe_cqe *cqe;
2075 struct qedf_io_work *io_work;
2076 int num_handled = 0;
2078 struct qedf_ioreq *io_req = NULL;
2083 /* Get the current firmware producer index */
2084 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2086 /* Get the pointer to the global CQ this completion is on */
2087 que = qedf->global_queues[fp->sb_id];
2089 /* Calculate the amount of new elements since last processing */
2090 new_cqes = (prod_idx >= que->cq_prod_idx) ?
2091 (prod_idx - que->cq_prod_idx) :
2092 0x10000 - que->cq_prod_idx + prod_idx;
2094 /* Save producer index */
2095 que->cq_prod_idx = prod_idx;
2100 cqe = &que->cq[que->cq_cons_idx];
2102 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2103 FCOE_CQE_CQE_TYPE_MASK;
2106 * Process unsolicited CQEs directly in the interrupt handler
2107 * sine we need the fastpath ID
2109 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2110 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2111 "Unsolicated CQE.\n");
2112 qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2114 * Don't add a work list item. Increment consumer
2115 * consumer index and move on.
2120 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2121 io_req = &qedf->cmd_mgr->cmds[xid];
2124 * Figure out which percpu thread we should queue this I/O
2128 /* If there is not io_req assocated with this CQE
2129 * just queue it on CPU 0
2134 io_req->int_cpu = smp_processor_id();
2137 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2139 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2140 "work for I/O completion.\n");
2143 memset(io_work, 0, sizeof(struct qedf_io_work));
2145 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2147 /* Copy contents of CQE for deferred processing */
2148 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2150 io_work->qedf = fp->qedf;
2151 io_work->fp = NULL; /* Only used for unsolicited frames */
2153 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2157 if (que->cq_cons_idx == fp->cq_num_entries)
2158 que->cq_cons_idx = 0;
2166 /* MSI-X fastpath handler code */
2167 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2169 struct qedf_fastpath *fp = dev_id;
2172 QEDF_ERR(NULL, "fp is null.\n");
2176 QEDF_ERR(NULL, "fp->sb_info in null.");
2181 * Disable interrupts for this status block while we process new
2184 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2187 qedf_process_completions(fp);
2189 if (qedf_fp_has_work(fp) == 0) {
2190 /* Update the sb information */
2191 qed_sb_update_sb_idx(fp->sb_info);
2193 /* Check for more work */
2196 if (qedf_fp_has_work(fp) == 0) {
2197 /* Re-enable interrupts */
2198 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2204 /* Do we ever want to break out of above loop? */
2208 /* simd handler for MSI/INTa */
2209 static void qedf_simd_int_handler(void *cookie)
2211 /* Cookie is qedf_ctx struct */
2212 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2214 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2217 #define QEDF_SIMD_HANDLER_NUM 0
2218 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2222 if (qedf->int_info.msix_cnt) {
2223 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2224 synchronize_irq(qedf->int_info.msix[i].vector);
2225 irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2227 irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
2229 free_irq(qedf->int_info.msix[i].vector,
2230 &qedf->fp_array[i]);
2233 qed_ops->common->simd_handler_clean(qedf->cdev,
2234 QEDF_SIMD_HANDLER_NUM);
2236 qedf->int_info.used_cnt = 0;
2237 qed_ops->common->set_fp_int(qedf->cdev, 0);
2240 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2244 cpu = cpumask_first(cpu_online_mask);
2245 for (i = 0; i < qedf->num_queues; i++) {
2246 rc = request_irq(qedf->int_info.msix[i].vector,
2247 qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
2250 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2251 qedf_sync_free_irqs(qedf);
2255 qedf->int_info.used_cnt++;
2256 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2258 cpu = cpumask_next(cpu, cpu_online_mask);
2264 static int qedf_setup_int(struct qedf_ctx *qedf)
2269 * Learn interrupt configuration
2271 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2275 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2279 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2280 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2283 if (qedf->int_info.msix_cnt)
2284 return qedf_request_msix_irq(qedf);
2286 qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2287 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2288 qedf->int_info.used_cnt = 1;
2290 QEDF_ERR(&qedf->dbg_ctx,
2291 "Cannot load driver due to a lack of MSI-X vectors.\n");
2295 /* Main function for libfc frame reception */
2296 static void qedf_recv_frame(struct qedf_ctx *qedf,
2297 struct sk_buff *skb)
2300 struct fc_lport *lport;
2301 struct fc_frame_header *fh;
2302 struct fcoe_crc_eof crc_eof;
2303 struct fc_frame *fp;
2305 u8 *dest_mac = NULL;
2306 struct fcoe_hdr *hp;
2307 struct qedf_rport *fcport;
2308 struct fc_lport *vn_port;
2311 lport = qedf->lport;
2312 if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2313 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2318 if (skb_is_nonlinear(skb))
2320 mac = eth_hdr(skb)->h_source;
2321 dest_mac = eth_hdr(skb)->h_dest;
2323 /* Pull the header */
2324 hp = (struct fcoe_hdr *)skb->data;
2325 fh = (struct fc_frame_header *) skb_transport_header(skb);
2326 skb_pull(skb, sizeof(struct fcoe_hdr));
2327 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2329 fp = (struct fc_frame *)skb;
2332 fr_sof(fp) = hp->fcoe_sof;
2333 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2337 fr_eof(fp) = crc_eof.fcoe_eof;
2338 fr_crc(fp) = crc_eof.fcoe_crc32;
2339 if (pskb_trim(skb, fr_len)) {
2344 fh = fc_frame_header_get(fp);
2347 * Invalid frame filters.
2350 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2351 fh->fh_type == FC_TYPE_FCP) {
2352 /* Drop FCP data. We dont this in L2 path */
2356 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2357 fh->fh_type == FC_TYPE_ELS) {
2358 switch (fc_frame_payload_op(fp)) {
2360 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2361 /* drop non-FIP LOGO */
2369 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2370 /* Drop incoming ABTS */
2375 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2376 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2377 "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2382 if (qedf->ctlr.state) {
2383 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2384 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2385 "Wrong source address: mac:%pM dest_addr:%pM.\n",
2386 mac, qedf->ctlr.dest_addr);
2392 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2395 * If the destination ID from the frame header does not match what we
2396 * have on record for lport and the search for a NPIV port came up
2397 * empty then this is not addressed to our port so simply drop it.
2399 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2400 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2401 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
2402 lport->port_id, ntoh24(fh->fh_d_id));
2407 f_ctl = ntoh24(fh->fh_f_ctl);
2408 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2409 (f_ctl & FC_FC_EX_CTX)) {
2410 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2416 * If a connection is uploading, drop incoming FCoE frames as there
2417 * is a small window where we could try to return a frame while libfc
2418 * is trying to clean things up.
2421 /* Get fcport associated with d_id if it exists */
2422 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2424 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2426 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2427 "Connection uploading, dropping fp=%p.\n", fp);
2432 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2433 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2434 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2436 if (qedf_dump_frames)
2437 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2438 1, skb->data, skb->len, false);
2439 fc_exch_recv(lport, fp);
2442 static void qedf_ll2_process_skb(struct work_struct *work)
2444 struct qedf_skb_work *skb_work =
2445 container_of(work, struct qedf_skb_work, work);
2446 struct qedf_ctx *qedf = skb_work->qedf;
2447 struct sk_buff *skb = skb_work->skb;
2451 QEDF_ERR(NULL, "qedf is NULL\n");
2455 eh = (struct ethhdr *)skb->data;
2457 /* Undo VLAN encapsulation */
2458 if (eh->h_proto == htons(ETH_P_8021Q)) {
2459 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2460 eh = skb_pull(skb, VLAN_HLEN);
2461 skb_reset_mac_header(skb);
2465 * Process either a FIP frame or FCoE frame based on the
2466 * protocol value. If it's not either just drop the
2469 if (eh->h_proto == htons(ETH_P_FIP)) {
2470 qedf_fip_recv(qedf, skb);
2472 } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2473 __skb_pull(skb, ETH_HLEN);
2474 qedf_recv_frame(qedf, skb);
2486 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2489 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2490 struct qedf_skb_work *skb_work;
2492 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2493 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2494 "Dropping frame as link state is down.\n");
2499 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2501 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2502 "dropping frame.\n");
2507 INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2508 skb_work->skb = skb;
2509 skb_work->qedf = qedf;
2510 queue_work(qedf->ll2_recv_wq, &skb_work->work);
2515 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2516 .rx_cb = qedf_ll2_rx,
2520 /* Main thread to process I/O completions */
2521 void qedf_fp_io_handler(struct work_struct *work)
2523 struct qedf_io_work *io_work =
2524 container_of(work, struct qedf_io_work, work);
2528 * Deferred part of unsolicited CQE sends
2531 comp_type = (io_work->cqe.cqe_data >>
2532 FCOE_CQE_CQE_TYPE_SHIFT) &
2533 FCOE_CQE_CQE_TYPE_MASK;
2534 if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2536 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2538 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2543 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2544 struct qed_sb_info *sb_info, u16 sb_id)
2546 struct status_block_e4 *sb_virt;
2550 sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2551 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);
2554 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2555 "for id = %d.\n", sb_id);
2559 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2560 sb_id, QED_SB_TYPE_STORAGE);
2563 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2564 "failed for id = %d.\n", sb_id);
2571 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2573 if (sb_info->sb_virt)
2574 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2575 (void *)sb_info->sb_virt, sb_info->sb_phys);
2578 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2581 struct qedf_fastpath *fp = NULL;
2583 for (id = 0; id < qedf->num_queues; id++) {
2584 fp = &(qedf->fp_array[id]);
2585 if (fp->sb_id == QEDF_SB_ID_NULL)
2587 qedf_free_sb(qedf, fp->sb_info);
2590 kfree(qedf->fp_array);
2593 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2596 struct qedf_fastpath *fp;
2600 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2603 if (!qedf->fp_array) {
2604 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2609 for (id = 0; id < qedf->num_queues; id++) {
2610 fp = &(qedf->fp_array[id]);
2611 fp->sb_id = QEDF_SB_ID_NULL;
2612 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2614 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2615 "allocation failed.\n");
2618 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2620 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2621 "initialization failed.\n");
2626 fp->cq_num_entries =
2627 qedf->global_queues[id]->cq_mem_size /
2628 sizeof(struct fcoe_cqe);
2634 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2637 struct qedf_ioreq *io_req;
2638 struct qedf_rport *fcport;
2641 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2642 FCOE_CQE_CQE_TYPE_MASK;
2644 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2645 io_req = &qedf->cmd_mgr->cmds[xid];
2647 /* Completion not for a valid I/O anymore so just return */
2651 fcport = io_req->fcport;
2653 if (fcport == NULL) {
2654 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2659 * Check that fcport is offloaded. If it isn't then the spinlock
2660 * isn't valid and shouldn't be taken. We should just return.
2662 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2663 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2668 switch (comp_type) {
2669 case FCOE_GOOD_COMPLETION_CQE_TYPE:
2670 atomic_inc(&fcport->free_sqes);
2671 switch (io_req->cmd_type) {
2673 qedf_scsi_completion(qedf, cqe, io_req);
2676 qedf_process_els_compl(qedf, cqe, io_req);
2678 case QEDF_TASK_MGMT_CMD:
2679 qedf_process_tmf_compl(qedf, cqe, io_req);
2681 case QEDF_SEQ_CLEANUP:
2682 qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2686 case FCOE_ERROR_DETECTION_CQE_TYPE:
2687 atomic_inc(&fcport->free_sqes);
2688 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2689 "Error detect CQE.\n");
2690 qedf_process_error_detect(qedf, cqe, io_req);
2692 case FCOE_EXCH_CLEANUP_CQE_TYPE:
2693 atomic_inc(&fcport->free_sqes);
2694 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2696 qedf_process_cleanup_compl(qedf, cqe, io_req);
2698 case FCOE_ABTS_CQE_TYPE:
2699 atomic_inc(&fcport->free_sqes);
2700 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2702 qedf_process_abts_compl(qedf, cqe, io_req);
2704 case FCOE_DUMMY_CQE_TYPE:
2705 atomic_inc(&fcport->free_sqes);
2706 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2709 case FCOE_LOCAL_COMP_CQE_TYPE:
2710 atomic_inc(&fcport->free_sqes);
2711 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2712 "Local completion CQE.\n");
2714 case FCOE_WARNING_CQE_TYPE:
2715 atomic_inc(&fcport->free_sqes);
2716 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2718 qedf_process_warning_compl(qedf, cqe, io_req);
2720 case MAX_FCOE_CQE_TYPE:
2721 atomic_inc(&fcport->free_sqes);
2722 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2726 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2732 static void qedf_free_bdq(struct qedf_ctx *qedf)
2736 if (qedf->bdq_pbl_list)
2737 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2738 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2741 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2742 qedf->bdq_pbl, qedf->bdq_pbl_dma);
2744 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2745 if (qedf->bdq[i].buf_addr) {
2746 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2747 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2752 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2755 struct global_queue **gl = qedf->global_queues;
2757 for (i = 0; i < qedf->num_queues; i++) {
2762 dma_free_coherent(&qedf->pdev->dev,
2763 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2765 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2766 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2771 qedf_free_bdq(qedf);
2774 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2777 struct scsi_bd *pbl;
2781 /* Alloc dma memory for BDQ buffers */
2782 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2783 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2784 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2785 if (!qedf->bdq[i].buf_addr) {
2786 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2792 /* Alloc dma memory for BDQ page buffer list */
2793 qedf->bdq_pbl_mem_size =
2794 QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2795 qedf->bdq_pbl_mem_size =
2796 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2798 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2799 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2800 if (!qedf->bdq_pbl) {
2801 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2805 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2806 "BDQ PBL addr=0x%p dma=%pad\n",
2807 qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2810 * Populate BDQ PBL with physical and virtual address of individual
2813 pbl = (struct scsi_bd *)qedf->bdq_pbl;
2814 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2815 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2816 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2817 pbl->opaque.fcoe_opaque.hi = 0;
2818 /* Opaque lo data is an index into the BDQ array */
2819 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2823 /* Allocate list of PBL pages */
2824 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
2826 &qedf->bdq_pbl_list_dma,
2828 if (!qedf->bdq_pbl_list) {
2829 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2834 * Now populate PBL list with pages that contain pointers to the
2835 * individual buffers.
2837 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2839 list = (u64 *)qedf->bdq_pbl_list;
2840 page = qedf->bdq_pbl_list_dma;
2841 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2842 *list = qedf->bdq_pbl_dma;
2844 page += QEDF_PAGE_SIZE;
2850 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2859 /* Allocate and map CQs, RQs */
2861 * Number of global queues (CQ / RQ). This should
2862 * be <= number of available MSIX vectors for the PF
2864 if (!qedf->num_queues) {
2865 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2870 * Make sure we allocated the PBL that will contain the physical
2871 * addresses of our queues
2873 if (!qedf->p_cpuq) {
2875 goto mem_alloc_failure;
2878 qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2879 * qedf->num_queues), GFP_KERNEL);
2880 if (!qedf->global_queues) {
2881 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2882 "queues array ptr memory\n");
2885 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2886 "qedf->global_queues=%p.\n", qedf->global_queues);
2888 /* Allocate DMA coherent buffers for BDQ */
2889 rc = qedf_alloc_bdq(qedf);
2891 goto mem_alloc_failure;
2893 /* Allocate a CQ and an associated PBL for each MSI-X vector */
2894 for (i = 0; i < qedf->num_queues; i++) {
2895 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2897 if (!qedf->global_queues[i]) {
2898 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2899 "global queue %d.\n", i);
2901 goto mem_alloc_failure;
2904 qedf->global_queues[i]->cq_mem_size =
2905 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2906 qedf->global_queues[i]->cq_mem_size =
2907 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2909 qedf->global_queues[i]->cq_pbl_size =
2910 (qedf->global_queues[i]->cq_mem_size /
2911 PAGE_SIZE) * sizeof(void *);
2912 qedf->global_queues[i]->cq_pbl_size =
2913 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2915 qedf->global_queues[i]->cq =
2916 dma_alloc_coherent(&qedf->pdev->dev,
2917 qedf->global_queues[i]->cq_mem_size,
2918 &qedf->global_queues[i]->cq_dma,
2921 if (!qedf->global_queues[i]->cq) {
2922 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2924 goto mem_alloc_failure;
2927 qedf->global_queues[i]->cq_pbl =
2928 dma_alloc_coherent(&qedf->pdev->dev,
2929 qedf->global_queues[i]->cq_pbl_size,
2930 &qedf->global_queues[i]->cq_pbl_dma,
2933 if (!qedf->global_queues[i]->cq_pbl) {
2934 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2936 goto mem_alloc_failure;
2940 num_pages = qedf->global_queues[i]->cq_mem_size /
2942 page = qedf->global_queues[i]->cq_dma;
2943 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2945 while (num_pages--) {
2946 *pbl = U64_LO(page);
2948 *pbl = U64_HI(page);
2950 page += QEDF_PAGE_SIZE;
2952 /* Set the initial consumer index for cq */
2953 qedf->global_queues[i]->cq_cons_idx = 0;
2956 list = (u32 *)qedf->p_cpuq;
2959 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2960 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
2961 * to the physical address which contains an array of pointers to
2962 * the physical addresses of the specific queue pages.
2964 for (i = 0; i < qedf->num_queues; i++) {
2965 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2967 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2978 qedf_free_global_queues(qedf);
2982 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2984 u8 sq_num_pbl_pages;
2991 * The number of completion queues/fastpath interrupts/status blocks
2992 * we allocation is the minimum off:
2995 * Number allocated by qed for our PCI function
2997 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
2999 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3002 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3003 qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3004 &qedf->hw_p_cpuq, GFP_KERNEL);
3006 if (!qedf->p_cpuq) {
3007 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3011 rval = qedf_alloc_global_queues(qedf);
3013 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3018 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3019 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3020 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3021 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3023 /* Calculate CQ num entries */
3024 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3025 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3026 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3028 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3030 /* Setup the value for fcoe PF */
3031 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3032 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3033 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3034 (u64)qedf->hw_p_cpuq;
3035 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3037 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3039 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3040 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3042 /* log_page_size: 12 for 4KB pages */
3043 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3045 qedf->pf_params.fcoe_pf_params.mtu = 9000;
3046 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3047 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3049 /* BDQ address and size */
3050 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3051 qedf->bdq_pbl_list_dma;
3052 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3053 qedf->bdq_pbl_list_num_entries;
3054 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3056 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3057 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3059 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3060 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3062 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3063 "cq_num_entries=%d.\n",
3064 qedf->pf_params.fcoe_pf_params.cq_num_entries);
3069 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3070 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3075 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3076 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3080 qedf_free_global_queues(qedf);
3082 kfree(qedf->global_queues);
3086 * PCI driver functions
3089 static const struct pci_device_id qedf_pci_tbl[] = {
3090 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3091 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3094 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3096 static struct pci_driver qedf_pci_driver = {
3097 .name = QEDF_MODULE_NAME,
3098 .id_table = qedf_pci_tbl,
3099 .probe = qedf_probe,
3100 .remove = qedf_remove,
3103 static int __qedf_probe(struct pci_dev *pdev, int mode)
3106 struct fc_lport *lport;
3107 struct qedf_ctx *qedf;
3108 struct Scsi_Host *host;
3110 struct qed_ll2_params params;
3112 struct qed_link_params link_params;
3114 void *task_start, *task_end;
3115 struct qed_slowpath_params slowpath_params;
3116 struct qed_probe_params qed_params;
3120 * When doing error recovery we didn't reap the lport so don't try
3123 if (mode != QEDF_MODE_RECOVERY) {
3124 lport = libfc_host_alloc(&qedf_host_template,
3125 sizeof(struct qedf_ctx));
3128 QEDF_ERR(NULL, "Could not allocate lport.\n");
3133 fc_disc_init(lport);
3135 /* Initialize qedf_ctx */
3136 qedf = lport_priv(lport);
3137 qedf->lport = lport;
3138 qedf->ctlr.lp = lport;
3140 qedf->dbg_ctx.pdev = pdev;
3141 qedf->dbg_ctx.host_no = lport->host->host_no;
3142 spin_lock_init(&qedf->hba_lock);
3143 INIT_LIST_HEAD(&qedf->fcports);
3144 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3145 atomic_set(&qedf->num_offloads, 0);
3146 qedf->stop_io_on_error = false;
3147 pci_set_drvdata(pdev, qedf);
3148 init_completion(&qedf->fipvlan_compl);
3149 mutex_init(&qedf->stats_mutex);
3150 mutex_init(&qedf->flush_mutex);
3152 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3153 "QLogic FastLinQ FCoE Module qedf %s, "
3154 "FW %d.%d.%d.%d\n", QEDF_VERSION,
3155 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3156 FW_ENGINEERING_VERSION);
3158 /* Init pointers during recovery */
3159 qedf = pci_get_drvdata(pdev);
3160 lport = qedf->lport;
3165 /* Allocate mempool for qedf_io_work structs */
3166 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3167 qedf_io_work_cache);
3168 if (qedf->io_mempool == NULL) {
3169 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3172 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3175 sprintf(host_buf, "qedf_%u_link",
3176 qedf->lport->host->host_no);
3177 qedf->link_update_wq = create_workqueue(host_buf);
3178 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3179 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3180 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3181 qedf->fipvlan_retries = qedf_fipvlan_retries;
3182 /* Set a default prio in case DCBX doesn't converge */
3183 if (qedf_default_prio > -1) {
3185 * This is the case where we pass a modparam in so we want to
3186 * honor it even if dcbx doesn't converge.
3188 qedf->prio = qedf_default_prio;
3190 qedf->prio = QEDF_DEFAULT_PRIO;
3193 * Common probe. Takes care of basic hardware init and pci_*
3196 memset(&qed_params, 0, sizeof(qed_params));
3197 qed_params.protocol = QED_PROTOCOL_FCOE;
3198 qed_params.dp_module = qedf_dp_module;
3199 qed_params.dp_level = qedf_dp_level;
3200 qed_params.is_vf = is_vf;
3201 qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3207 /* Learn information crucial for qedf to progress */
3208 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3210 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3214 /* queue allocation code should come here
3217 * status block allocation
3218 * interrupt registration (to get min number of queues)
3220 * qed_sp_fcoe_func_start
3222 rc = qedf_set_fcoe_pf_param(qedf);
3224 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3227 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3229 /* Record BDQ producer doorbell addresses */
3230 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3231 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3232 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3233 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3234 qedf->bdq_secondary_prod);
3236 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3238 rc = qedf_prepare_sb(qedf);
3241 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3245 /* Start the Slowpath-process */
3246 slowpath_params.int_mode = QED_INT_MODE_MSIX;
3247 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3248 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3249 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3250 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3251 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3252 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3254 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3259 * update_pf_params needs to be called before and after slowpath
3262 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3264 /* Setup interrupts */
3265 rc = qedf_setup_int(qedf);
3269 rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3271 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3274 task_start = qedf_get_task_mem(&qedf->tasks, 0);
3275 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3276 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3277 "end=%p block_size=%u.\n", task_start, task_end,
3281 * We need to write the number of BDs in the BDQ we've preallocated so
3282 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3285 qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3286 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3287 "Writing %d to primary and secondary BDQ doorbell registers.\n",
3288 qedf->bdq_prod_idx);
3289 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3290 tmp = readw(qedf->bdq_primary_prod);
3291 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3292 tmp = readw(qedf->bdq_secondary_prod);
3294 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3296 /* Now that the dev_info struct has been filled in set the MAC
3299 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3300 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3304 * Set the WWNN and WWPN in the following way:
3306 * If the info we get from qed is non-zero then use that to set the
3307 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3308 * on the MAC address.
3310 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3311 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3312 "Setting WWPN and WWNN from qed dev_info.\n");
3313 qedf->wwnn = qedf->dev_info.wwnn;
3314 qedf->wwpn = qedf->dev_info.wwpn;
3316 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3317 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3318 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3319 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3321 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx "
3322 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3324 sprintf(host_buf, "host_%d", host->host_no);
3325 qed_ops->common->set_name(qedf->cdev, host_buf);
3327 /* Allocate cmd mgr */
3328 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3329 if (!qedf->cmd_mgr) {
3330 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3335 if (mode != QEDF_MODE_RECOVERY) {
3336 host->transportt = qedf_fc_transport_template;
3337 host->max_lun = qedf_max_lun;
3338 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3339 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3340 rc = scsi_add_host(host, &pdev->dev);
3342 QEDF_WARN(&qedf->dbg_ctx,
3343 "Error adding Scsi_Host rc=0x%x.\n", rc);
3348 memset(¶ms, 0, sizeof(params));
3350 ether_addr_copy(params.ll2_mac_address, qedf->mac);
3352 /* Start LL2 processing thread */
3353 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3355 create_workqueue(host_buf);
3356 if (!qedf->ll2_recv_wq) {
3357 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3362 #ifdef CONFIG_DEBUG_FS
3363 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3368 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3369 rc = qed_ops->ll2->start(qedf->cdev, ¶ms);
3371 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3374 set_bit(QEDF_LL2_STARTED, &qedf->flags);
3376 /* Set initial FIP/FCoE VLAN to NULL */
3380 * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3381 * they were not reaped during the unload process.
3383 if (mode != QEDF_MODE_RECOVERY) {
3384 /* Setup imbedded fcoe controller */
3385 qedf_fcoe_ctlr_setup(qedf);
3388 rc = qedf_lport_setup(qedf);
3390 QEDF_ERR(&(qedf->dbg_ctx),
3391 "qedf_lport_setup failed.\n");
3396 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3397 qedf->timer_work_queue =
3398 create_workqueue(host_buf);
3399 if (!qedf->timer_work_queue) {
3400 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3406 /* DPC workqueue is not reaped during recovery unload */
3407 if (mode != QEDF_MODE_RECOVERY) {
3408 sprintf(host_buf, "qedf_%u_dpc",
3409 qedf->lport->host->host_no);
3410 qedf->dpc_wq = create_workqueue(host_buf);
3414 * GRC dump and sysfs parameters are not reaped during the recovery
3417 if (mode != QEDF_MODE_RECOVERY) {
3418 qedf->grcdump_size =
3419 qed_ops->common->dbg_all_data_size(qedf->cdev);
3420 if (qedf->grcdump_size) {
3421 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3422 qedf->grcdump_size);
3424 QEDF_ERR(&(qedf->dbg_ctx),
3425 "GRC Dump buffer alloc failed.\n");
3426 qedf->grcdump = NULL;
3429 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3430 "grcdump: addr=%p, size=%u.\n",
3431 qedf->grcdump, qedf->grcdump_size);
3433 qedf_create_sysfs_ctx_attr(qedf);
3435 /* Initialize I/O tracing for this adapter */
3436 spin_lock_init(&qedf->io_trace_lock);
3437 qedf->io_trace_idx = 0;
3440 init_completion(&qedf->flogi_compl);
3442 status = qed_ops->common->update_drv_state(qedf->cdev, true);
3444 QEDF_ERR(&(qedf->dbg_ctx),
3445 "Failed to send drv state to MFW.\n");
3447 memset(&link_params, 0, sizeof(struct qed_link_params));
3448 link_params.link_up = true;
3449 status = qed_ops->common->set_link(qedf->cdev, &link_params);
3451 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3453 /* Start/restart discovery */
3454 if (mode == QEDF_MODE_RECOVERY)
3455 fcoe_ctlr_link_up(&qedf->ctlr);
3457 fc_fabric_login(lport);
3463 if (qedf->ll2_recv_wq)
3464 destroy_workqueue(qedf->ll2_recv_wq);
3465 fc_remove_host(qedf->lport->host);
3466 scsi_remove_host(qedf->lport->host);
3467 #ifdef CONFIG_DEBUG_FS
3468 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3471 qedf_cmd_mgr_free(qedf->cmd_mgr);
3473 qed_ops->stop(qedf->cdev);
3475 qedf_free_fcoe_pf_param(qedf);
3476 qedf_sync_free_irqs(qedf);
3478 qed_ops->common->slowpath_stop(qedf->cdev);
3480 qed_ops->common->remove(qedf->cdev);
3482 scsi_host_put(lport->host);
3487 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3489 return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3492 static void __qedf_remove(struct pci_dev *pdev, int mode)
3494 struct qedf_ctx *qedf;
3498 QEDF_ERR(NULL, "pdev is NULL.\n");
3502 qedf = pci_get_drvdata(pdev);
3505 * Prevent race where we're in board disable work and then try to
3508 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3509 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3513 if (mode != QEDF_MODE_RECOVERY)
3514 set_bit(QEDF_UNLOADING, &qedf->flags);
3516 /* Logoff the fabric to upload all connections */
3517 if (mode == QEDF_MODE_RECOVERY)
3518 fcoe_ctlr_link_down(&qedf->ctlr);
3520 fc_fabric_logoff(qedf->lport);
3522 if (qedf_wait_for_upload(qedf) == false)
3523 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3525 #ifdef CONFIG_DEBUG_FS
3526 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3529 /* Stop any link update handling */
3530 cancel_delayed_work_sync(&qedf->link_update);
3531 destroy_workqueue(qedf->link_update_wq);
3532 qedf->link_update_wq = NULL;
3534 if (qedf->timer_work_queue)
3535 destroy_workqueue(qedf->timer_work_queue);
3538 clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3539 qed_ops->ll2->stop(qedf->cdev);
3540 if (qedf->ll2_recv_wq)
3541 destroy_workqueue(qedf->ll2_recv_wq);
3544 qedf_sync_free_irqs(qedf);
3545 qedf_destroy_sb(qedf);
3548 * During recovery don't destroy OS constructs that represent the
3551 if (mode != QEDF_MODE_RECOVERY) {
3552 qedf_free_grc_dump_buf(&qedf->grcdump);
3553 qedf_remove_sysfs_ctx_attr(qedf);
3555 /* Remove all SCSI/libfc/libfcoe structures */
3556 fcoe_ctlr_destroy(&qedf->ctlr);
3557 fc_lport_destroy(qedf->lport);
3558 fc_remove_host(qedf->lport->host);
3559 scsi_remove_host(qedf->lport->host);
3562 qedf_cmd_mgr_free(qedf->cmd_mgr);
3564 if (mode != QEDF_MODE_RECOVERY) {
3565 fc_exch_mgr_free(qedf->lport);
3566 fc_lport_free_stats(qedf->lport);
3568 /* Wait for all vports to be reaped */
3569 qedf_wait_for_vport_destroy(qedf);
3573 * Now that all connections have been uploaded we can stop the
3574 * rest of the qed operations
3576 qed_ops->stop(qedf->cdev);
3578 if (mode != QEDF_MODE_RECOVERY) {
3580 /* Stop general DPC handling */
3581 destroy_workqueue(qedf->dpc_wq);
3582 qedf->dpc_wq = NULL;
3586 /* Final shutdown for the board */
3587 qedf_free_fcoe_pf_param(qedf);
3588 if (mode != QEDF_MODE_RECOVERY) {
3589 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3590 pci_set_drvdata(pdev, NULL);
3593 rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3595 QEDF_ERR(&(qedf->dbg_ctx),
3596 "Failed to send drv state to MFW.\n");
3598 qed_ops->common->slowpath_stop(qedf->cdev);
3599 qed_ops->common->remove(qedf->cdev);
3601 mempool_destroy(qedf->io_mempool);
3603 /* Only reap the Scsi_host on a real removal */
3604 if (mode != QEDF_MODE_RECOVERY)
3605 scsi_host_put(qedf->lport->host);
3608 static void qedf_remove(struct pci_dev *pdev)
3610 /* Check to make sure this function wasn't already disabled */
3611 if (!atomic_read(&pdev->enable_cnt))
3614 __qedf_remove(pdev, QEDF_MODE_NORMAL);
3617 void qedf_wq_grcdump(struct work_struct *work)
3619 struct qedf_ctx *qedf =
3620 container_of(work, struct qedf_ctx, grcdump_work.work);
3622 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3623 qedf_capture_grc_dump(qedf);
3627 * Protocol TLV handler
3629 void qedf_get_protocol_tlv_data(void *dev, void *data)
3631 struct qedf_ctx *qedf = dev;
3632 struct qed_mfw_tlv_fcoe *fcoe = data;
3633 struct fc_lport *lport = qedf->lport;
3634 struct Scsi_Host *host = lport->host;
3635 struct fc_host_attrs *fc_host = shost_to_fc_host(host);
3636 struct fc_host_statistics *hst;
3638 /* Force a refresh of the fc_host stats including offload stats */
3639 hst = qedf_fc_get_host_stats(host);
3641 fcoe->qos_pri_set = true;
3642 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3644 fcoe->ra_tov_set = true;
3645 fcoe->ra_tov = lport->r_a_tov;
3647 fcoe->ed_tov_set = true;
3648 fcoe->ed_tov = lport->e_d_tov;
3650 fcoe->npiv_state_set = true;
3651 fcoe->npiv_state = 1; /* NPIV always enabled */
3653 fcoe->num_npiv_ids_set = true;
3654 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3656 /* Certain attributes we only want to set if we've selected an FCF */
3657 if (qedf->ctlr.sel_fcf) {
3658 fcoe->switch_name_set = true;
3659 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3662 fcoe->port_state_set = true;
3663 /* For qedf we're either link down or fabric attach */
3665 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3667 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3669 fcoe->link_failures_set = true;
3670 fcoe->link_failures = (u16)hst->link_failure_count;
3672 fcoe->fcoe_txq_depth_set = true;
3673 fcoe->fcoe_rxq_depth_set = true;
3674 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3675 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3677 fcoe->fcoe_rx_frames_set = true;
3678 fcoe->fcoe_rx_frames = hst->rx_frames;
3680 fcoe->fcoe_tx_frames_set = true;
3681 fcoe->fcoe_tx_frames = hst->tx_frames;
3683 fcoe->fcoe_rx_bytes_set = true;
3684 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3686 fcoe->fcoe_tx_bytes_set = true;
3687 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3689 fcoe->crc_count_set = true;
3690 fcoe->crc_count = hst->invalid_crc_count;
3692 fcoe->tx_abts_set = true;
3693 fcoe->tx_abts = hst->fcp_packet_aborts;
3695 fcoe->tx_lun_rst_set = true;
3696 fcoe->tx_lun_rst = qedf->lun_resets;
3698 fcoe->abort_task_sets_set = true;
3699 fcoe->abort_task_sets = qedf->packet_aborts;
3701 fcoe->scsi_busy_set = true;
3702 fcoe->scsi_busy = qedf->busy;
3704 fcoe->scsi_tsk_full_set = true;
3705 fcoe->scsi_tsk_full = qedf->task_set_fulls;
3708 /* Generic TLV data callback */
3709 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
3711 struct qedf_ctx *qedf;
3714 QEDF_INFO(NULL, QEDF_LOG_EVT,
3715 "dev is NULL so ignoring get_generic_tlv_data request.\n");
3718 qedf = (struct qedf_ctx *)dev;
3720 memset(data, 0, sizeof(struct qed_generic_tlvs));
3721 ether_addr_copy(data->mac[0], qedf->mac);
3725 * Module Init/Remove
3728 static int __init qedf_init(void)
3732 /* If debug=1 passed, set the default log mask */
3733 if (qedf_debug == QEDF_LOG_DEFAULT)
3734 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3737 * Check that default prio for FIP/FCoE traffic is between 0..7 if a
3738 * value has been set
3740 if (qedf_default_prio > -1)
3741 if (qedf_default_prio > 7) {
3742 qedf_default_prio = QEDF_DEFAULT_PRIO;
3743 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
3747 /* Print driver banner */
3748 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3751 /* Create kmem_cache for qedf_io_work structs */
3752 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3753 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3754 if (qedf_io_work_cache == NULL) {
3755 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3758 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3759 qedf_io_work_cache);
3761 qed_ops = qed_get_fcoe_ops();
3763 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3767 #ifdef CONFIG_DEBUG_FS
3768 qedf_dbg_init("qedf");
3771 qedf_fc_transport_template =
3772 fc_attach_transport(&qedf_fc_transport_fn);
3773 if (!qedf_fc_transport_template) {
3774 QEDF_ERR(NULL, "Could not register with FC transport\n");
3778 qedf_fc_vport_transport_template =
3779 fc_attach_transport(&qedf_fc_vport_transport_fn);
3780 if (!qedf_fc_vport_transport_template) {
3781 QEDF_ERR(NULL, "Could not register vport template with FC "
3786 qedf_io_wq = create_workqueue("qedf_io_wq");
3788 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3792 qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3794 ret = pci_register_driver(&qedf_pci_driver);
3796 QEDF_ERR(NULL, "Failed to register driver\n");
3803 destroy_workqueue(qedf_io_wq);
3805 fc_release_transport(qedf_fc_vport_transport_template);
3807 fc_release_transport(qedf_fc_transport_template);
3809 #ifdef CONFIG_DEBUG_FS
3817 static void __exit qedf_cleanup(void)
3819 pci_unregister_driver(&qedf_pci_driver);
3821 destroy_workqueue(qedf_io_wq);
3823 fc_release_transport(qedf_fc_vport_transport_template);
3824 fc_release_transport(qedf_fc_transport_template);
3825 #ifdef CONFIG_DEBUG_FS
3830 kmem_cache_destroy(qedf_io_work_cache);
3833 MODULE_LICENSE("GPL");
3834 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3835 MODULE_AUTHOR("QLogic Corporation");
3836 MODULE_VERSION(QEDF_VERSION);
3837 module_init(qedf_init);
3838 module_exit(qedf_cleanup);