2 * QLogic FCoE Offload Driver
3 * Copyright (c) 2016-2017 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>
26 #include <uapi/linux/pci_regs.h>
28 const struct qed_fcoe_ops *qed_ops;
30 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
31 static void qedf_remove(struct pci_dev *pdev);
33 extern struct qedf_debugfs_ops qedf_debugfs_ops;
34 extern struct file_operations qedf_dbg_fops;
37 * Driver module parameters.
39 static unsigned int qedf_dev_loss_tmo = 60;
40 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
41 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached "
42 "remote ports (default 60)");
44 uint qedf_debug = QEDF_LOG_INFO;
45 module_param_named(debug, qedf_debug, uint, S_IRUGO);
46 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
49 static uint qedf_fipvlan_retries = 30;
50 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
51 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
52 "before giving up (default 30)");
54 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
55 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
56 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
59 static uint qedf_default_prio = QEDF_DEFAULT_PRIO;
60 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
61 MODULE_PARM_DESC(default_prio, " Default 802.1q priority for FIP and FCoE"
62 " traffic (default 3).");
64 uint qedf_dump_frames;
65 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
66 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
69 static uint qedf_queue_depth;
70 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
71 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
72 "by the qedf driver. Default is 0 (use OS default).");
75 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
76 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
77 "into trace buffer. (default off).");
79 static uint qedf_max_lun = MAX_FIBRE_LUNS;
80 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
81 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
82 "supports. (default 0xffffffff)");
84 uint qedf_link_down_tmo;
85 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
86 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
87 "link is down by N seconds.");
89 bool qedf_retry_delay;
90 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
91 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
92 "delay handling (default off).");
94 static uint qedf_dp_module;
95 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
96 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
97 "qed module during probe.");
99 static uint qedf_dp_level = QED_LEVEL_NOTICE;
100 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
101 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module "
102 "during probe (0-3: 0 more verbose).");
104 struct workqueue_struct *qedf_io_wq;
106 static struct fcoe_percpu_s qedf_global;
107 static DEFINE_SPINLOCK(qedf_global_lock);
109 static struct kmem_cache *qedf_io_work_cache;
111 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
113 qedf->vlan_id = vlan_id;
114 qedf->vlan_id |= qedf_default_prio << VLAN_PRIO_SHIFT;
115 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x "
116 "prio=%d.\n", vlan_id, qedf_default_prio);
119 /* Returns true if we have a valid vlan, false otherwise */
120 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
124 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
125 QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n");
129 while (qedf->fipvlan_retries--) {
130 if (qedf->vlan_id > 0)
132 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
133 "Retry %d.\n", qedf->fipvlan_retries);
134 init_completion(&qedf->fipvlan_compl);
135 qedf_fcoe_send_vlan_req(qedf);
136 rc = wait_for_completion_timeout(&qedf->fipvlan_compl,
139 fcoe_ctlr_link_up(&qedf->ctlr);
147 static void qedf_handle_link_update(struct work_struct *work)
149 struct qedf_ctx *qedf =
150 container_of(work, struct qedf_ctx, link_update.work);
153 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n");
155 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
156 rc = qedf_initiate_fipvlan_req(qedf);
160 * If we get here then we never received a repsonse to our
161 * fip vlan request so set the vlan_id to the default and
162 * tell FCoE that the link is up
164 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
165 "response, falling back to default VLAN %d.\n",
167 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
170 * Zero out data_src_addr so we'll update it with the new
173 eth_zero_addr(qedf->data_src_addr);
174 fcoe_ctlr_link_up(&qedf->ctlr);
175 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
177 * If we hit here and link_down_tmo_valid is still 1 it means
178 * that link_down_tmo timed out so set it to 0 to make sure any
179 * other readers have accurate state.
181 atomic_set(&qedf->link_down_tmo_valid, 0);
182 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
183 "Calling fcoe_ctlr_link_down().\n");
184 fcoe_ctlr_link_down(&qedf->ctlr);
185 qedf_wait_for_upload(qedf);
186 /* Reset the number of FIP VLAN retries */
187 qedf->fipvlan_retries = qedf_fipvlan_retries;
191 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1
192 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2
193 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3
194 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
197 struct fc_frame_header *fh = fc_frame_header_get(fp);
201 /* Get granted MAC address from FIP FLOGI payload */
202 granted_mac = fr_cb(fp)->granted_mac;
205 * We set the source MAC for FCoE traffic based on the Granted MAC
206 * address from the switch.
208 * If granted_mac is non-zero, we used that.
209 * If the granted_mac is zeroed out, created the FCoE MAC based on
210 * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
211 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
212 * d_id of the FLOGI frame.
214 if (!is_zero_ether_addr(granted_mac)) {
215 ether_addr_copy(qedf->data_src_addr, granted_mac);
216 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
217 } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
218 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
219 qedf->data_src_addr[0] = fc_map[0];
220 qedf->data_src_addr[1] = fc_map[1];
221 qedf->data_src_addr[2] = fc_map[2];
222 qedf->data_src_addr[3] = fh->fh_d_id[0];
223 qedf->data_src_addr[4] = fh->fh_d_id[1];
224 qedf->data_src_addr[5] = fh->fh_d_id[2];
225 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
227 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
228 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
231 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
232 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
235 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
238 struct fc_exch *exch = fc_seq_exch(seq);
239 struct fc_lport *lport = exch->lp;
240 struct qedf_ctx *qedf = lport_priv(lport);
243 QEDF_ERR(NULL, "qedf is NULL.\n");
248 * If ERR_PTR is set then don't try to stat anything as it will cause
249 * a crash when we access fp.
252 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
253 "fp has IS_ERR() set.\n");
257 /* Log stats for FLOGI reject */
258 if (fc_frame_payload_op(fp) == ELS_LS_RJT)
259 qedf->flogi_failed++;
260 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
261 /* Set the source MAC we will use for FCoE traffic */
262 qedf_set_data_src_addr(qedf, fp);
265 /* Complete flogi_compl so we can proceed to sending ADISCs */
266 complete(&qedf->flogi_compl);
269 /* Report response to libfc */
270 fc_lport_flogi_resp(seq, fp, lport);
273 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
274 struct fc_frame *fp, unsigned int op,
275 void (*resp)(struct fc_seq *,
278 void *arg, u32 timeout)
280 struct qedf_ctx *qedf = lport_priv(lport);
283 * Intercept FLOGI for statistic purposes. Note we use the resp
284 * callback to tell if this is really a flogi.
286 if (resp == fc_lport_flogi_resp) {
288 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
292 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
295 int qedf_send_flogi(struct qedf_ctx *qedf)
297 struct fc_lport *lport;
302 if (!lport->tt.elsct_send)
305 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
307 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
311 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
312 "Sending FLOGI to reestablish session with switch.\n");
313 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
314 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
316 init_completion(&qedf->flogi_compl);
321 struct qedf_tmp_rdata_item {
322 struct fc_rport_priv *rdata;
323 struct list_head list;
327 * This function is called if link_down_tmo is in use. If we get a link up and
328 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
329 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up().
331 static void qedf_link_recovery(struct work_struct *work)
333 struct qedf_ctx *qedf =
334 container_of(work, struct qedf_ctx, link_recovery.work);
335 struct qedf_rport *fcport;
336 struct fc_rport_priv *rdata;
337 struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item;
341 struct list_head rdata_login_list;
343 INIT_LIST_HEAD(&rdata_login_list);
345 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
346 "Link down tmo did not expire.\n");
349 * Essentially reset the fcoe_ctlr here without affecting the state
350 * of the libfc structs.
352 qedf->ctlr.state = FIP_ST_LINK_WAIT;
353 fcoe_ctlr_link_down(&qedf->ctlr);
356 * Bring the link up before we send the fipvlan request so libfcoe
357 * can select a new fcf in parallel
359 fcoe_ctlr_link_up(&qedf->ctlr);
361 /* Since the link when down and up to verify which vlan we're on */
362 qedf->fipvlan_retries = qedf_fipvlan_retries;
363 rc = qedf_initiate_fipvlan_req(qedf);
364 /* If getting the VLAN fails, set the VLAN to the fallback one */
366 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
369 * We need to wait for an FCF to be selected due to the
370 * fcoe_ctlr_link_up other the FLOGI will be rejected.
372 while (retries > 0) {
373 if (qedf->ctlr.sel_fcf) {
374 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
375 "FCF reselected, proceeding with FLOGI.\n");
383 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
388 rval = qedf_send_flogi(qedf);
392 /* Wait for FLOGI completion before proceeding with sending ADISCs */
393 i = wait_for_completion_timeout(&qedf->flogi_compl,
394 qedf->lport->r_a_tov);
396 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
401 * Call lport->tt.rport_login which will cause libfc to send an
402 * ADISC since the rport is in state ready.
405 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
406 rdata = fcport->rdata;
409 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item),
413 if (kref_get_unless_zero(&rdata->kref)) {
414 rdata_item->rdata = rdata;
415 list_add(&rdata_item->list, &rdata_login_list);
421 * Do the fc_rport_login outside of the rcu lock so we don't take a
422 * mutex in an atomic context.
424 list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list,
426 list_del(&rdata_item->list);
427 fc_rport_login(rdata_item->rdata);
428 kref_put(&rdata_item->rdata->kref, fc_rport_destroy);
433 static void qedf_update_link_speed(struct qedf_ctx *qedf,
434 struct qed_link_output *link)
436 struct fc_lport *lport = qedf->lport;
438 lport->link_speed = FC_PORTSPEED_UNKNOWN;
439 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
441 /* Set fc_host link speed */
442 switch (link->speed) {
444 lport->link_speed = FC_PORTSPEED_10GBIT;
447 lport->link_speed = FC_PORTSPEED_25GBIT;
450 lport->link_speed = FC_PORTSPEED_40GBIT;
453 lport->link_speed = FC_PORTSPEED_50GBIT;
456 lport->link_speed = FC_PORTSPEED_100GBIT;
459 lport->link_speed = FC_PORTSPEED_UNKNOWN;
464 * Set supported link speed by querying the supported
465 * capabilities of the link.
467 if (link->supported_caps & SUPPORTED_10000baseKR_Full)
468 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
469 if (link->supported_caps & SUPPORTED_25000baseKR_Full)
470 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
471 if (link->supported_caps & SUPPORTED_40000baseLR4_Full)
472 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
473 if (link->supported_caps & SUPPORTED_50000baseKR2_Full)
474 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
475 if (link->supported_caps & SUPPORTED_100000baseKR4_Full)
476 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
477 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
480 static void qedf_link_update(void *dev, struct qed_link_output *link)
482 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
485 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
488 /* Cancel any pending link down work */
489 cancel_delayed_work(&qedf->link_update);
491 atomic_set(&qedf->link_state, QEDF_LINK_UP);
492 qedf_update_link_speed(qedf, link);
494 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
495 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
497 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
498 queue_delayed_work(qedf->link_update_wq,
499 &qedf->link_recovery, 0);
501 queue_delayed_work(qedf->link_update_wq,
502 &qedf->link_update, 0);
503 atomic_set(&qedf->link_down_tmo_valid, 0);
507 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
509 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
510 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
512 * Flag that we're waiting for the link to come back up before
513 * informing the fcoe layer of the event.
515 if (qedf_link_down_tmo > 0) {
516 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
517 "Starting link down tmo.\n");
518 atomic_set(&qedf->link_down_tmo_valid, 1);
521 qedf_update_link_speed(qedf, link);
522 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
523 qedf_link_down_tmo * HZ);
528 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
530 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
532 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
533 "prio=%d.\n", get->operational.valid, get->operational.enabled,
534 get->operational.app_prio.fcoe);
536 if (get->operational.enabled && get->operational.valid) {
537 /* If DCBX was already negotiated on link up then just exit */
538 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
539 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
540 "DCBX already set on link up.\n");
544 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
546 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
547 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
548 queue_delayed_work(qedf->link_update_wq,
549 &qedf->link_recovery, 0);
551 queue_delayed_work(qedf->link_update_wq,
552 &qedf->link_update, 0);
553 atomic_set(&qedf->link_down_tmo_valid, 0);
559 static u32 qedf_get_login_failures(void *cookie)
561 struct qedf_ctx *qedf;
563 qedf = (struct qedf_ctx *)cookie;
564 return qedf->flogi_failed;
567 static struct qed_fcoe_cb_ops qedf_cb_ops = {
569 .link_update = qedf_link_update,
570 .dcbx_aen = qedf_dcbx_handler,
575 * Various transport templates.
578 static struct scsi_transport_template *qedf_fc_transport_template;
579 static struct scsi_transport_template *qedf_fc_vport_transport_template;
584 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
586 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
587 struct fc_rport_libfc_priv *rp = rport->dd_data;
588 struct qedf_rport *fcport;
589 struct fc_lport *lport;
590 struct qedf_ctx *qedf;
591 struct qedf_ioreq *io_req;
595 if (fc_remote_port_chkready(rport)) {
596 QEDF_ERR(NULL, "rport not ready\n");
600 lport = shost_priv(sc_cmd->device->host);
601 qedf = (struct qedf_ctx *)lport_priv(lport);
603 if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
604 QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n");
608 fcport = (struct qedf_rport *)&rp[1];
610 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
612 QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n");
617 if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags) ||
618 test_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags) ||
619 test_bit(QEDF_CMD_IN_ABORT, &io_req->flags)) {
620 QEDF_ERR(&(qedf->dbg_ctx), "io_req xid=0x%x already in "
621 "cleanup or abort processing or already "
622 "completed.\n", io_req->xid);
627 QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x "
628 "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx);
630 if (qedf->stop_io_on_error) {
631 qedf_stop_all_io(qedf);
636 init_completion(&io_req->abts_done);
637 rval = qedf_initiate_abts(io_req, true);
639 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
643 wait_for_completion(&io_req->abts_done);
645 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
646 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
647 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
649 * If we get a reponse to the abort this is success from
650 * the perspective that all references to the command have
651 * been removed from the driver and firmware
655 /* If the abort and cleanup failed then return a failure */
660 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
663 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
670 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
672 QEDF_ERR(NULL, "TARGET RESET Issued...");
673 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
676 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
678 QEDF_ERR(NULL, "LUN RESET Issued...\n");
679 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
682 void qedf_wait_for_upload(struct qedf_ctx *qedf)
685 if (atomic_read(&qedf->num_offloads))
686 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
687 "Waiting for all uploads to complete.\n");
694 /* Performs soft reset of qedf_ctx by simulating a link down/up */
695 static void qedf_ctx_soft_reset(struct fc_lport *lport)
697 struct qedf_ctx *qedf;
700 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
704 qedf = lport_priv(lport);
706 /* For host reset, essentially do a soft link up/down */
707 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
708 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
709 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
711 qedf_wait_for_upload(qedf);
712 atomic_set(&qedf->link_state, QEDF_LINK_UP);
714 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
718 /* Reset the host by gracefully logging out and then logging back in */
719 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
721 struct fc_lport *lport;
722 struct qedf_ctx *qedf;
724 lport = shost_priv(sc_cmd->device->host);
725 qedf = lport_priv(lport);
727 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
728 test_bit(QEDF_UNLOADING, &qedf->flags))
731 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
733 qedf_ctx_soft_reset(lport);
738 static int qedf_slave_configure(struct scsi_device *sdev)
740 if (qedf_queue_depth) {
741 scsi_change_queue_depth(sdev, qedf_queue_depth);
747 static struct scsi_host_template qedf_host_template = {
748 .module = THIS_MODULE,
749 .name = QEDF_MODULE_NAME,
752 .use_clustering = ENABLE_CLUSTERING,
753 .max_sectors = 0xffff,
754 .queuecommand = qedf_queuecommand,
755 .shost_attrs = qedf_host_attrs,
756 .eh_abort_handler = qedf_eh_abort,
757 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
758 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
759 .eh_host_reset_handler = qedf_eh_host_reset,
760 .slave_configure = qedf_slave_configure,
761 .dma_boundary = QED_HW_DMA_BOUNDARY,
762 .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
763 .can_queue = FCOE_PARAMS_NUM_TASKS,
764 .change_queue_depth = scsi_change_queue_depth,
767 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
771 spin_lock(&qedf_global_lock);
772 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
773 spin_unlock(&qedf_global_lock);
778 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
780 struct qedf_rport *fcport;
781 struct fc_rport_priv *rdata;
784 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
785 rdata = fcport->rdata;
788 if (rdata->ids.port_id == port_id) {
795 /* Return NULL to caller to let them know fcport was not found */
799 /* Transmits an ELS frame over an offloaded session */
800 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
802 struct fc_frame_header *fh;
805 fh = fc_frame_header_get(fp);
806 if ((fh->fh_type == FC_TYPE_ELS) &&
807 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
808 switch (fc_frame_payload_op(fp)) {
810 qedf_send_adisc(fcport, fp);
820 * qedf_xmit - qedf FCoE frame transmit function
823 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
825 struct fc_lport *base_lport;
826 struct qedf_ctx *qedf;
828 struct fcoe_crc_eof *cp;
830 struct fc_frame_header *fh;
834 unsigned int hlen, tlen, elen;
836 struct fc_stats *stats;
837 struct fc_lport *tmp_lport;
838 struct fc_lport *vn_port = NULL;
839 struct qedf_rport *fcport;
843 qedf = (struct qedf_ctx *)lport_priv(lport);
845 fh = fc_frame_header_get(fp);
848 /* Filter out traffic to other NPIV ports on the same host */
850 base_lport = shost_priv(vport_to_shost(lport->vport));
854 /* Flag if the destination is the base port */
855 if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
856 vn_port = base_lport;
858 /* Got through the list of vports attached to the base_lport
859 * and see if we have a match with the destination address.
861 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
862 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
868 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
869 struct fc_rport_priv *rdata = NULL;
871 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
872 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
874 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
876 rdata->retries = lport->max_rport_retry_count;
879 /* End NPIV filtering */
881 if (!qedf->ctlr.sel_fcf) {
886 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
887 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
892 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
893 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
898 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
899 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
903 /* Check to see if this needs to be sent on an offloaded session */
904 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
906 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
907 rc = qedf_xmit_l2_frame(fcport, fp);
909 * If the frame was successfully sent over the middle path
910 * then do not try to also send it over the LL2 path
919 elen = sizeof(struct ethhdr);
920 hlen = sizeof(struct fcoe_hdr);
921 tlen = sizeof(struct fcoe_crc_eof);
922 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
924 skb->ip_summed = CHECKSUM_NONE;
925 crc = fcoe_fc_crc(fp);
927 /* copy port crc and eof to the skb buff */
928 if (skb_is_nonlinear(skb)) {
931 if (qedf_get_paged_crc_eof(skb, tlen)) {
935 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
936 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
938 cp = skb_put(skb, tlen);
941 memset(cp, 0, sizeof(*cp));
943 cp->fcoe_crc32 = cpu_to_le32(~crc);
944 if (skb_is_nonlinear(skb)) {
950 /* adjust skb network/transport offsets to match mac/fcoe/port */
951 skb_push(skb, elen + hlen);
952 skb_reset_mac_header(skb);
953 skb_reset_network_header(skb);
955 skb->protocol = htons(ETH_P_FCOE);
958 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
959 * for FIP/FCoE traffic.
961 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
963 /* fill up mac and fcoe headers */
965 eh->h_proto = htons(ETH_P_FCOE);
966 if (qedf->ctlr.map_dest)
967 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
969 /* insert GW address */
970 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
972 /* Set the source MAC address */
973 ether_addr_copy(eh->h_source, qedf->data_src_addr);
975 hp = (struct fcoe_hdr *)(eh + 1);
976 memset(hp, 0, sizeof(*hp));
978 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
982 stats = per_cpu_ptr(lport->stats, get_cpu());
984 stats->TxWords += wlen;
987 /* Get VLAN ID from skb for printing purposes */
988 __vlan_hwaccel_get_tag(skb, &vlan_tci);
990 /* send down to lld */
992 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
993 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
994 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
996 if (qedf_dump_frames)
997 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
998 1, skb->data, skb->len, false);
999 qed_ops->ll2->start_xmit(qedf->cdev, skb);
1004 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1011 /* Calculate appropriate queue and PBL sizes */
1012 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1013 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1014 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1016 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1018 fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev,
1019 fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL);
1021 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1026 fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev,
1027 fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL);
1028 if (!fcport->sq_pbl) {
1029 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1035 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1036 page = fcport->sq_dma;
1037 pbl = (u32 *)fcport->sq_pbl;
1039 while (num_pages--) {
1040 *pbl = U64_LO(page);
1042 *pbl = U64_HI(page);
1044 page += QEDF_PAGE_SIZE;
1050 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1056 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1059 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1060 fcport->sq_pbl, fcport->sq_pbl_dma);
1062 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1063 fcport->sq, fcport->sq_dma);
1066 static int qedf_offload_connection(struct qedf_ctx *qedf,
1067 struct qedf_rport *fcport)
1069 struct qed_fcoe_params_offload conn_info;
1072 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1074 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1075 "portid=%06x.\n", fcport->rdata->ids.port_id);
1076 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1077 &fcport->fw_cid, &fcport->p_doorbell);
1079 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1080 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1081 rval = 1; /* For some reason qed returns 0 on failure here */
1085 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1086 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1087 fcport->fw_cid, fcport->handle);
1089 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1091 /* Fill in the offload connection info */
1092 conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1094 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1095 conn_info.sq_next_page_addr =
1096 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1098 /* Need to use our FCoE MAC for the offload session */
1099 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1101 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1103 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1104 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1105 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1106 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1109 conn_info.vlan_tag = qedf->vlan_id <<
1110 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1111 conn_info.vlan_tag |=
1112 qedf_default_prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1113 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1114 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1116 /* Set host port source id */
1117 port_id = fc_host_port_id(qedf->lport->host);
1118 fcport->sid = port_id;
1119 conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1120 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1121 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1123 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1125 /* Set remote port destination id */
1126 port_id = fcport->rdata->rport->port_id;
1127 conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1128 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1129 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1131 conn_info.def_q_idx = 0; /* Default index for send queue? */
1133 /* Set FC-TAPE specific flags if needed */
1134 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1135 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1136 "Enable CONF, REC for portid=%06x.\n",
1137 fcport->rdata->ids.port_id);
1138 conn_info.flags |= 1 <<
1139 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1141 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1142 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1145 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1147 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1148 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1151 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1152 "succeeded portid=%06x total_sqe=%d.\n",
1153 fcport->rdata->ids.port_id, total_sqe);
1155 spin_lock_init(&fcport->rport_lock);
1156 atomic_set(&fcport->free_sqes, total_sqe);
1159 qed_ops->release_conn(qedf->cdev, fcport->handle);
1164 #define QEDF_TERM_BUFF_SIZE 10
1165 static void qedf_upload_connection(struct qedf_ctx *qedf,
1166 struct qedf_rport *fcport)
1169 dma_addr_t term_params_dma;
1171 /* Term params needs to be a DMA coherent buffer as qed shared the
1172 * physical DMA address with the firmware. The buffer may be used in
1173 * the receive path so we may eventually have to move this.
1175 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1176 &term_params_dma, GFP_KERNEL);
1178 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1179 "port_id=%06x.\n", fcport->rdata->ids.port_id);
1181 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1182 qed_ops->release_conn(qedf->cdev, fcport->handle);
1184 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1188 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1189 struct qedf_rport *fcport)
1191 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1192 fcport->rdata->ids.port_id);
1194 /* Flush any remaining i/o's before we upload the connection */
1195 qedf_flush_active_ios(fcport, -1);
1197 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1198 qedf_upload_connection(qedf, fcport);
1199 qedf_free_sq(qedf, fcport);
1200 fcport->rdata = NULL;
1201 fcport->qedf = NULL;
1205 * This event_callback is called after successful completion of libfc
1206 * initiated target login. qedf can proceed with initiating the session
1209 static void qedf_rport_event_handler(struct fc_lport *lport,
1210 struct fc_rport_priv *rdata,
1211 enum fc_rport_event event)
1213 struct qedf_ctx *qedf = lport_priv(lport);
1214 struct fc_rport *rport = rdata->rport;
1215 struct fc_rport_libfc_priv *rp;
1216 struct qedf_rport *fcport;
1219 unsigned long flags;
1221 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1222 "port_id = 0x%x\n", event, rdata->ids.port_id);
1225 case RPORT_EV_READY:
1227 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1231 rp = rport->dd_data;
1232 fcport = (struct qedf_rport *)&rp[1];
1233 fcport->qedf = qedf;
1235 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1236 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1237 "portid=0x%x as max number of offloaded sessions "
1238 "reached.\n", rdata->ids.port_id);
1243 * Don't try to offload the session again. Can happen when we
1246 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1247 QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1248 "offloaded, portid=0x%x.\n",
1249 rdata->ids.port_id);
1253 if (rport->port_id == FC_FID_DIR_SERV) {
1255 * qedf_rport structure doesn't exist for
1257 * We should not come here, as lport will
1258 * take care of fabric login
1260 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1261 "exist for dir server port_id=%x\n",
1262 rdata->ids.port_id);
1266 if (rdata->spp_type != FC_TYPE_FCP) {
1267 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1268 "Not offloading since spp type isn't FCP\n");
1271 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1272 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1273 "Not FCP target so not offloading\n");
1277 fcport->rdata = rdata;
1278 fcport->rport = rport;
1280 rval = qedf_alloc_sq(qedf, fcport);
1282 qedf_cleanup_fcport(qedf, fcport);
1286 /* Set device type */
1287 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1288 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1289 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1290 fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1291 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1292 "portid=%06x is a TAPE device.\n",
1293 rdata->ids.port_id);
1295 fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1298 rval = qedf_offload_connection(qedf, fcport);
1300 qedf_cleanup_fcport(qedf, fcport);
1304 /* Add fcport to list of qedf_ctx list of offloaded ports */
1305 spin_lock_irqsave(&qedf->hba_lock, flags);
1306 list_add_rcu(&fcport->peers, &qedf->fcports);
1307 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1310 * Set the session ready bit to let everyone know that this
1311 * connection is ready for I/O
1313 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1314 atomic_inc(&qedf->num_offloads);
1318 case RPORT_EV_FAILED:
1320 port_id = rdata->ids.port_id;
1321 if (port_id == FC_FID_DIR_SERV)
1325 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1326 "port_id=%x - rport notcreated Yet!!\n", port_id);
1329 rp = rport->dd_data;
1331 * Perform session upload. Note that rdata->peers is already
1332 * removed from disc->rports list before we get this event.
1334 fcport = (struct qedf_rport *)&rp[1];
1336 /* Only free this fcport if it is offloaded already */
1337 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1338 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags);
1339 qedf_cleanup_fcport(qedf, fcport);
1342 * Remove fcport to list of qedf_ctx list of offloaded
1345 spin_lock_irqsave(&qedf->hba_lock, flags);
1346 list_del_rcu(&fcport->peers);
1347 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1349 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1351 atomic_dec(&qedf->num_offloads);
1361 static void qedf_abort_io(struct fc_lport *lport)
1363 /* NO-OP but need to fill in the template */
1366 static void qedf_fcp_cleanup(struct fc_lport *lport)
1369 * NO-OP but need to fill in template to prevent a NULL
1370 * function pointer dereference during link down. I/Os
1371 * will be flushed when port is uploaded.
1375 static struct libfc_function_template qedf_lport_template = {
1376 .frame_send = qedf_xmit,
1377 .fcp_abort_io = qedf_abort_io,
1378 .fcp_cleanup = qedf_fcp_cleanup,
1379 .rport_event_callback = qedf_rport_event_handler,
1380 .elsct_send = qedf_elsct_send,
1383 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1385 fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO);
1387 qedf->ctlr.send = qedf_fip_send;
1388 qedf->ctlr.get_src_addr = qedf_get_src_mac;
1389 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1392 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1394 struct fc_lport *lport = qedf->lport;
1395 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1400 * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1402 lport->fdmi_enabled = 1;
1405 * Setup the necessary fc_host attributes to that will be used to fill
1406 * in the FDMI information.
1409 /* Get the PCI-e Device Serial Number Capability */
1410 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1413 for (i = 0; i < 8; i++)
1414 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1416 snprintf(fc_host->serial_number,
1417 sizeof(fc_host->serial_number),
1418 "%02X%02X%02X%02X%02X%02X%02X%02X",
1419 buf[7], buf[6], buf[5], buf[4],
1420 buf[3], buf[2], buf[1], buf[0]);
1422 snprintf(fc_host->serial_number,
1423 sizeof(fc_host->serial_number), "Unknown");
1425 snprintf(fc_host->manufacturer,
1426 sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1428 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1430 snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1431 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1434 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1435 "Rev %d", qedf->pdev->revision);
1437 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1438 "%s", QEDF_VERSION);
1440 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1441 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1442 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1445 static int qedf_lport_setup(struct qedf_ctx *qedf)
1447 struct fc_lport *lport = qedf->lport;
1450 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1451 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1452 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1453 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1454 lport->boot_time = jiffies;
1455 lport->e_d_tov = 2 * 1000;
1456 lport->r_a_tov = 10 * 1000;
1458 /* Set NPIV support */
1459 lport->does_npiv = 1;
1460 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1462 fc_set_wwnn(lport, qedf->wwnn);
1463 fc_set_wwpn(lport, qedf->wwpn);
1465 fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0);
1467 /* Allocate the exchange manager */
1468 fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1,
1469 qedf->max_els_xid, NULL);
1471 if (fc_lport_init_stats(lport))
1474 /* Finish lport config */
1475 fc_lport_config(lport);
1477 /* Set max frame size */
1478 fc_set_mfs(lport, QEDF_MFS);
1479 fc_host_maxframe_size(lport->host) = lport->mfs;
1481 /* Set default dev_loss_tmo based on module parameter */
1482 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1484 /* Set symbolic node name */
1485 snprintf(fc_host_symbolic_name(lport->host), 256,
1486 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1488 qedf_setup_fdmi(qedf);
1497 static int qedf_vport_libfc_config(struct fc_vport *vport,
1498 struct fc_lport *lport)
1502 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1503 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1504 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1505 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1506 lport->boot_time = jiffies;
1507 lport->e_d_tov = 2 * 1000;
1508 lport->r_a_tov = 10 * 1000;
1509 lport->does_npiv = 1; /* Temporary until we add NPIV support */
1511 /* Allocate stats for vport */
1512 if (fc_lport_init_stats(lport))
1515 /* Finish lport config */
1516 fc_lport_config(lport);
1518 /* offload related configuration */
1519 lport->crc_offload = 0;
1520 lport->seq_offload = 0;
1521 lport->lro_enabled = 0;
1528 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1530 struct Scsi_Host *shost = vport_to_shost(vport);
1531 struct fc_lport *n_port = shost_priv(shost);
1532 struct fc_lport *vn_port;
1533 struct qedf_ctx *base_qedf = lport_priv(n_port);
1534 struct qedf_ctx *vport_qedf;
1539 rc = fcoe_validate_vport_create(vport);
1541 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1542 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1543 "WWPN (0x%s) already exists.\n", buf);
1547 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1548 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1549 "because link is not up.\n");
1554 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1556 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1562 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1563 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1566 /* Copy some fields from base_qedf */
1567 vport_qedf = lport_priv(vn_port);
1568 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1570 /* Set qedf data specific to this vport */
1571 vport_qedf->lport = vn_port;
1572 /* Use same hba_lock as base_qedf */
1573 vport_qedf->hba_lock = base_qedf->hba_lock;
1574 vport_qedf->pdev = base_qedf->pdev;
1575 vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1576 init_completion(&vport_qedf->flogi_compl);
1577 INIT_LIST_HEAD(&vport_qedf->fcports);
1579 rc = qedf_vport_libfc_config(vport, vn_port);
1581 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1582 "for lport stats.\n");
1586 fc_set_wwnn(vn_port, vport->node_name);
1587 fc_set_wwpn(vn_port, vport->port_name);
1588 vport_qedf->wwnn = vn_port->wwnn;
1589 vport_qedf->wwpn = vn_port->wwpn;
1591 vn_port->host->transportt = qedf_fc_vport_transport_template;
1592 vn_port->host->can_queue = QEDF_MAX_ELS_XID;
1593 vn_port->host->max_lun = qedf_max_lun;
1594 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1595 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1597 rc = scsi_add_host(vn_port->host, &vport->dev);
1599 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n");
1603 /* Set default dev_loss_tmo based on module parameter */
1604 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1606 /* Init libfc stuffs */
1607 memcpy(&vn_port->tt, &qedf_lport_template,
1608 sizeof(qedf_lport_template));
1609 fc_exch_init(vn_port);
1610 fc_elsct_init(vn_port);
1611 fc_lport_init(vn_port);
1612 fc_disc_init(vn_port);
1613 fc_disc_config(vn_port, vn_port);
1616 /* Allocate the exchange manager */
1617 shost = vport_to_shost(vport);
1618 n_port = shost_priv(shost);
1619 fc_exch_mgr_list_clone(n_port, vn_port);
1621 /* Set max frame size */
1622 fc_set_mfs(vn_port, QEDF_MFS);
1624 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1627 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1629 vn_port->boot_time = jiffies;
1630 fc_fabric_login(vn_port);
1631 fc_vport_setlink(vn_port);
1634 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1637 /* Set up debug context for vport */
1638 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1639 vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1642 scsi_host_put(vn_port->host);
1647 static int qedf_vport_destroy(struct fc_vport *vport)
1649 struct Scsi_Host *shost = vport_to_shost(vport);
1650 struct fc_lport *n_port = shost_priv(shost);
1651 struct fc_lport *vn_port = vport->dd_data;
1652 struct qedf_ctx *qedf = lport_priv(vn_port);
1655 QEDF_ERR(NULL, "qedf is NULL.\n");
1659 /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1660 set_bit(QEDF_UNLOADING, &qedf->flags);
1662 mutex_lock(&n_port->lp_mutex);
1663 list_del(&vn_port->list);
1664 mutex_unlock(&n_port->lp_mutex);
1666 fc_fabric_logoff(vn_port);
1667 fc_lport_destroy(vn_port);
1669 /* Detach from scsi-ml */
1670 fc_remove_host(vn_port->host);
1671 scsi_remove_host(vn_port->host);
1674 * Only try to release the exchange manager if the vn_port
1675 * configuration is complete.
1677 if (vn_port->state == LPORT_ST_READY)
1678 fc_exch_mgr_free(vn_port);
1680 /* Free memory used by statistical counters */
1681 fc_lport_free_stats(vn_port);
1683 /* Release Scsi_Host */
1685 scsi_host_put(vn_port->host);
1691 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1693 struct fc_lport *lport = vport->dd_data;
1696 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1697 fc_fabric_logoff(lport);
1699 lport->boot_time = jiffies;
1700 fc_fabric_login(lport);
1701 fc_vport_setlink(lport);
1707 * During removal we need to wait for all the vports associated with a port
1708 * to be destroyed so we avoid a race condition where libfc is still trying
1709 * to reap vports while the driver remove function has already reaped the
1710 * driver contexts associated with the physical port.
1712 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1714 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1716 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1718 while (fc_host->npiv_vports_inuse > 0) {
1719 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1720 "Waiting for all vports to be reaped.\n");
1726 * qedf_fcoe_reset - Resets the fcoe
1728 * @shost: shost the reset is from
1732 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1734 struct fc_lport *lport = shost_priv(shost);
1736 qedf_ctx_soft_reset(lport);
1740 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1743 struct fc_host_statistics *qedf_stats;
1744 struct fc_lport *lport = shost_priv(shost);
1745 struct qedf_ctx *qedf = lport_priv(lport);
1746 struct qed_fcoe_stats *fw_fcoe_stats;
1748 qedf_stats = fc_get_host_stats(shost);
1750 /* We don't collect offload stats for specific NPIV ports */
1754 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1755 if (!fw_fcoe_stats) {
1756 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1757 "fw_fcoe_stats.\n");
1761 /* Query firmware for offload stats */
1762 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1765 * The expectation is that we add our offload stats to the stats
1766 * being maintained by libfc each time the fc_get_host_status callback
1767 * is invoked. The additions are not carried over for each call to
1768 * the fc_get_host_stats callback.
1770 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1771 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1772 fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1773 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1774 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1775 fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1776 qedf_stats->fcp_input_megabytes +=
1777 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1778 qedf_stats->fcp_output_megabytes +=
1779 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1780 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1781 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1782 qedf_stats->invalid_crc_count +=
1783 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1784 qedf_stats->dumped_frames =
1785 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1786 qedf_stats->error_frames +=
1787 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1788 qedf_stats->fcp_input_requests += qedf->input_requests;
1789 qedf_stats->fcp_output_requests += qedf->output_requests;
1790 qedf_stats->fcp_control_requests += qedf->control_requests;
1791 qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1792 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1794 kfree(fw_fcoe_stats);
1799 static struct fc_function_template qedf_fc_transport_fn = {
1800 .show_host_node_name = 1,
1801 .show_host_port_name = 1,
1802 .show_host_supported_classes = 1,
1803 .show_host_supported_fc4s = 1,
1804 .show_host_active_fc4s = 1,
1805 .show_host_maxframe_size = 1,
1807 .show_host_port_id = 1,
1808 .show_host_supported_speeds = 1,
1809 .get_host_speed = fc_get_host_speed,
1810 .show_host_speed = 1,
1811 .show_host_port_type = 1,
1812 .get_host_port_state = fc_get_host_port_state,
1813 .show_host_port_state = 1,
1814 .show_host_symbolic_name = 1,
1817 * Tell FC transport to allocate enough space to store the backpointer
1818 * for the associate qedf_rport struct.
1820 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1821 sizeof(struct qedf_rport)),
1822 .show_rport_maxframe_size = 1,
1823 .show_rport_supported_classes = 1,
1824 .show_host_fabric_name = 1,
1825 .show_starget_node_name = 1,
1826 .show_starget_port_name = 1,
1827 .show_starget_port_id = 1,
1828 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1829 .show_rport_dev_loss_tmo = 1,
1830 .get_fc_host_stats = qedf_fc_get_host_stats,
1831 .issue_fc_host_lip = qedf_fcoe_reset,
1832 .vport_create = qedf_vport_create,
1833 .vport_delete = qedf_vport_destroy,
1834 .vport_disable = qedf_vport_disable,
1835 .bsg_request = fc_lport_bsg_request,
1838 static struct fc_function_template qedf_fc_vport_transport_fn = {
1839 .show_host_node_name = 1,
1840 .show_host_port_name = 1,
1841 .show_host_supported_classes = 1,
1842 .show_host_supported_fc4s = 1,
1843 .show_host_active_fc4s = 1,
1844 .show_host_maxframe_size = 1,
1845 .show_host_port_id = 1,
1846 .show_host_supported_speeds = 1,
1847 .get_host_speed = fc_get_host_speed,
1848 .show_host_speed = 1,
1849 .show_host_port_type = 1,
1850 .get_host_port_state = fc_get_host_port_state,
1851 .show_host_port_state = 1,
1852 .show_host_symbolic_name = 1,
1853 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1854 sizeof(struct qedf_rport)),
1855 .show_rport_maxframe_size = 1,
1856 .show_rport_supported_classes = 1,
1857 .show_host_fabric_name = 1,
1858 .show_starget_node_name = 1,
1859 .show_starget_port_name = 1,
1860 .show_starget_port_id = 1,
1861 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1862 .show_rport_dev_loss_tmo = 1,
1863 .get_fc_host_stats = fc_get_host_stats,
1864 .issue_fc_host_lip = qedf_fcoe_reset,
1865 .bsg_request = fc_lport_bsg_request,
1868 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
1870 struct qedf_ctx *qedf = fp->qedf;
1871 struct global_queue *que;
1872 struct qed_sb_info *sb_info = fp->sb_info;
1873 struct status_block *sb = sb_info->sb_virt;
1876 /* Get the pointer to the global CQ this completion is on */
1877 que = qedf->global_queues[fp->sb_id];
1879 /* Be sure all responses have been written to PI */
1882 /* Get the current firmware producer index */
1883 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1885 return (que->cq_prod_idx != prod_idx);
1889 * Interrupt handler code.
1892 /* Process completion queue and copy CQE contents for deferred processesing
1894 * Return true if we should wake the I/O thread, false if not.
1896 static bool qedf_process_completions(struct qedf_fastpath *fp)
1898 struct qedf_ctx *qedf = fp->qedf;
1899 struct qed_sb_info *sb_info = fp->sb_info;
1900 struct status_block *sb = sb_info->sb_virt;
1901 struct global_queue *que;
1903 struct fcoe_cqe *cqe;
1904 struct qedf_io_work *io_work;
1905 int num_handled = 0;
1907 struct qedf_ioreq *io_req = NULL;
1912 /* Get the current firmware producer index */
1913 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1915 /* Get the pointer to the global CQ this completion is on */
1916 que = qedf->global_queues[fp->sb_id];
1918 /* Calculate the amount of new elements since last processing */
1919 new_cqes = (prod_idx >= que->cq_prod_idx) ?
1920 (prod_idx - que->cq_prod_idx) :
1921 0x10000 - que->cq_prod_idx + prod_idx;
1923 /* Save producer index */
1924 que->cq_prod_idx = prod_idx;
1929 cqe = &que->cq[que->cq_cons_idx];
1931 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
1932 FCOE_CQE_CQE_TYPE_MASK;
1935 * Process unsolicited CQEs directly in the interrupt handler
1936 * sine we need the fastpath ID
1938 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
1939 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
1940 "Unsolicated CQE.\n");
1941 qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
1943 * Don't add a work list item. Increment consumer
1944 * consumer index and move on.
1949 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
1950 io_req = &qedf->cmd_mgr->cmds[xid];
1953 * Figure out which percpu thread we should queue this I/O
1957 /* If there is not io_req assocated with this CQE
1958 * just queue it on CPU 0
1963 io_req->int_cpu = smp_processor_id();
1966 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
1968 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
1969 "work for I/O completion.\n");
1972 memset(io_work, 0, sizeof(struct qedf_io_work));
1974 INIT_WORK(&io_work->work, qedf_fp_io_handler);
1976 /* Copy contents of CQE for deferred processing */
1977 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
1979 io_work->qedf = fp->qedf;
1980 io_work->fp = NULL; /* Only used for unsolicited frames */
1982 queue_work_on(cpu, qedf_io_wq, &io_work->work);
1986 if (que->cq_cons_idx == fp->cq_num_entries)
1987 que->cq_cons_idx = 0;
1995 /* MSI-X fastpath handler code */
1996 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
1998 struct qedf_fastpath *fp = dev_id;
2001 QEDF_ERR(NULL, "fp is null.\n");
2005 QEDF_ERR(NULL, "fp->sb_info in null.");
2010 * Disable interrupts for this status block while we process new
2013 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2016 qedf_process_completions(fp);
2018 if (qedf_fp_has_work(fp) == 0) {
2019 /* Update the sb information */
2020 qed_sb_update_sb_idx(fp->sb_info);
2022 /* Check for more work */
2025 if (qedf_fp_has_work(fp) == 0) {
2026 /* Re-enable interrupts */
2027 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2033 /* Do we ever want to break out of above loop? */
2037 /* simd handler for MSI/INTa */
2038 static void qedf_simd_int_handler(void *cookie)
2040 /* Cookie is qedf_ctx struct */
2041 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2043 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2046 #define QEDF_SIMD_HANDLER_NUM 0
2047 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2051 if (qedf->int_info.msix_cnt) {
2052 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2053 synchronize_irq(qedf->int_info.msix[i].vector);
2054 irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2056 irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
2058 free_irq(qedf->int_info.msix[i].vector,
2059 &qedf->fp_array[i]);
2062 qed_ops->common->simd_handler_clean(qedf->cdev,
2063 QEDF_SIMD_HANDLER_NUM);
2065 qedf->int_info.used_cnt = 0;
2066 qed_ops->common->set_fp_int(qedf->cdev, 0);
2069 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2073 cpu = cpumask_first(cpu_online_mask);
2074 for (i = 0; i < qedf->num_queues; i++) {
2075 rc = request_irq(qedf->int_info.msix[i].vector,
2076 qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
2079 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2080 qedf_sync_free_irqs(qedf);
2084 qedf->int_info.used_cnt++;
2085 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2087 cpu = cpumask_next(cpu, cpu_online_mask);
2093 static int qedf_setup_int(struct qedf_ctx *qedf)
2098 * Learn interrupt configuration
2100 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2104 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2108 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2109 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2112 if (qedf->int_info.msix_cnt)
2113 return qedf_request_msix_irq(qedf);
2115 qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2116 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2117 qedf->int_info.used_cnt = 1;
2122 /* Main function for libfc frame reception */
2123 static void qedf_recv_frame(struct qedf_ctx *qedf,
2124 struct sk_buff *skb)
2127 struct fc_lport *lport;
2128 struct fc_frame_header *fh;
2129 struct fcoe_crc_eof crc_eof;
2130 struct fc_frame *fp;
2132 u8 *dest_mac = NULL;
2133 struct fcoe_hdr *hp;
2134 struct qedf_rport *fcport;
2135 struct fc_lport *vn_port;
2138 lport = qedf->lport;
2139 if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2140 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2145 if (skb_is_nonlinear(skb))
2147 mac = eth_hdr(skb)->h_source;
2148 dest_mac = eth_hdr(skb)->h_dest;
2150 /* Pull the header */
2151 hp = (struct fcoe_hdr *)skb->data;
2152 fh = (struct fc_frame_header *) skb_transport_header(skb);
2153 skb_pull(skb, sizeof(struct fcoe_hdr));
2154 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2156 fp = (struct fc_frame *)skb;
2159 fr_sof(fp) = hp->fcoe_sof;
2160 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2164 fr_eof(fp) = crc_eof.fcoe_eof;
2165 fr_crc(fp) = crc_eof.fcoe_crc32;
2166 if (pskb_trim(skb, fr_len)) {
2171 fh = fc_frame_header_get(fp);
2174 * Invalid frame filters.
2177 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2178 fh->fh_type == FC_TYPE_FCP) {
2179 /* Drop FCP data. We dont this in L2 path */
2183 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2184 fh->fh_type == FC_TYPE_ELS) {
2185 switch (fc_frame_payload_op(fp)) {
2187 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2188 /* drop non-FIP LOGO */
2196 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2197 /* Drop incoming ABTS */
2202 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2203 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2204 "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2208 if (qedf->ctlr.state) {
2209 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2210 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2211 "Wrong source address: mac:%pM dest_addr:%pM.\n",
2212 mac, qedf->ctlr.dest_addr);
2218 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2221 * If the destination ID from the frame header does not match what we
2222 * have on record for lport and the search for a NPIV port came up
2223 * empty then this is not addressed to our port so simply drop it.
2225 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2226 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2227 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
2228 lport->port_id, ntoh24(fh->fh_d_id));
2233 f_ctl = ntoh24(fh->fh_f_ctl);
2234 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2235 (f_ctl & FC_FC_EX_CTX)) {
2236 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2242 * If a connection is uploading, drop incoming FCoE frames as there
2243 * is a small window where we could try to return a frame while libfc
2244 * is trying to clean things up.
2247 /* Get fcport associated with d_id if it exists */
2248 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2250 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2252 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2253 "Connection uploading, dropping fp=%p.\n", fp);
2258 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2259 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2260 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2262 if (qedf_dump_frames)
2263 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2264 1, skb->data, skb->len, false);
2265 fc_exch_recv(lport, fp);
2268 static void qedf_ll2_process_skb(struct work_struct *work)
2270 struct qedf_skb_work *skb_work =
2271 container_of(work, struct qedf_skb_work, work);
2272 struct qedf_ctx *qedf = skb_work->qedf;
2273 struct sk_buff *skb = skb_work->skb;
2277 QEDF_ERR(NULL, "qedf is NULL\n");
2281 eh = (struct ethhdr *)skb->data;
2283 /* Undo VLAN encapsulation */
2284 if (eh->h_proto == htons(ETH_P_8021Q)) {
2285 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2286 eh = skb_pull(skb, VLAN_HLEN);
2287 skb_reset_mac_header(skb);
2291 * Process either a FIP frame or FCoE frame based on the
2292 * protocol value. If it's not either just drop the
2295 if (eh->h_proto == htons(ETH_P_FIP)) {
2296 qedf_fip_recv(qedf, skb);
2298 } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2299 __skb_pull(skb, ETH_HLEN);
2300 qedf_recv_frame(qedf, skb);
2312 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2315 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2316 struct qedf_skb_work *skb_work;
2318 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2320 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2321 "dropping frame.\n");
2326 INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2327 skb_work->skb = skb;
2328 skb_work->qedf = qedf;
2329 queue_work(qedf->ll2_recv_wq, &skb_work->work);
2334 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2335 .rx_cb = qedf_ll2_rx,
2339 /* Main thread to process I/O completions */
2340 void qedf_fp_io_handler(struct work_struct *work)
2342 struct qedf_io_work *io_work =
2343 container_of(work, struct qedf_io_work, work);
2347 * Deferred part of unsolicited CQE sends
2350 comp_type = (io_work->cqe.cqe_data >>
2351 FCOE_CQE_CQE_TYPE_SHIFT) &
2352 FCOE_CQE_CQE_TYPE_MASK;
2353 if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2355 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2357 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2362 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2363 struct qed_sb_info *sb_info, u16 sb_id)
2365 struct status_block *sb_virt;
2369 sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2370 sizeof(struct status_block), &sb_phys, GFP_KERNEL);
2373 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2374 "for id = %d.\n", sb_id);
2378 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2379 sb_id, QED_SB_TYPE_STORAGE);
2382 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2383 "failed for id = %d.\n", sb_id);
2390 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2392 if (sb_info->sb_virt)
2393 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2394 (void *)sb_info->sb_virt, sb_info->sb_phys);
2397 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2400 struct qedf_fastpath *fp = NULL;
2402 for (id = 0; id < qedf->num_queues; id++) {
2403 fp = &(qedf->fp_array[id]);
2404 if (fp->sb_id == QEDF_SB_ID_NULL)
2406 qedf_free_sb(qedf, fp->sb_info);
2409 kfree(qedf->fp_array);
2412 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2415 struct qedf_fastpath *fp;
2419 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2422 if (!qedf->fp_array) {
2423 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2428 for (id = 0; id < qedf->num_queues; id++) {
2429 fp = &(qedf->fp_array[id]);
2430 fp->sb_id = QEDF_SB_ID_NULL;
2431 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2433 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2434 "allocation failed.\n");
2437 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2439 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2440 "initialization failed.\n");
2445 fp->cq_num_entries =
2446 qedf->global_queues[id]->cq_mem_size /
2447 sizeof(struct fcoe_cqe);
2453 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2456 struct qedf_ioreq *io_req;
2457 struct qedf_rport *fcport;
2460 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2461 FCOE_CQE_CQE_TYPE_MASK;
2463 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2464 io_req = &qedf->cmd_mgr->cmds[xid];
2466 /* Completion not for a valid I/O anymore so just return */
2470 fcport = io_req->fcport;
2472 if (fcport == NULL) {
2473 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2478 * Check that fcport is offloaded. If it isn't then the spinlock
2479 * isn't valid and shouldn't be taken. We should just return.
2481 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2482 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2487 switch (comp_type) {
2488 case FCOE_GOOD_COMPLETION_CQE_TYPE:
2489 atomic_inc(&fcport->free_sqes);
2490 switch (io_req->cmd_type) {
2492 qedf_scsi_completion(qedf, cqe, io_req);
2495 qedf_process_els_compl(qedf, cqe, io_req);
2497 case QEDF_TASK_MGMT_CMD:
2498 qedf_process_tmf_compl(qedf, cqe, io_req);
2500 case QEDF_SEQ_CLEANUP:
2501 qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2505 case FCOE_ERROR_DETECTION_CQE_TYPE:
2506 atomic_inc(&fcport->free_sqes);
2507 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2508 "Error detect CQE.\n");
2509 qedf_process_error_detect(qedf, cqe, io_req);
2511 case FCOE_EXCH_CLEANUP_CQE_TYPE:
2512 atomic_inc(&fcport->free_sqes);
2513 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2515 qedf_process_cleanup_compl(qedf, cqe, io_req);
2517 case FCOE_ABTS_CQE_TYPE:
2518 atomic_inc(&fcport->free_sqes);
2519 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2521 qedf_process_abts_compl(qedf, cqe, io_req);
2523 case FCOE_DUMMY_CQE_TYPE:
2524 atomic_inc(&fcport->free_sqes);
2525 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2528 case FCOE_LOCAL_COMP_CQE_TYPE:
2529 atomic_inc(&fcport->free_sqes);
2530 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2531 "Local completion CQE.\n");
2533 case FCOE_WARNING_CQE_TYPE:
2534 atomic_inc(&fcport->free_sqes);
2535 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2537 qedf_process_warning_compl(qedf, cqe, io_req);
2539 case MAX_FCOE_CQE_TYPE:
2540 atomic_inc(&fcport->free_sqes);
2541 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2545 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2551 static void qedf_free_bdq(struct qedf_ctx *qedf)
2555 if (qedf->bdq_pbl_list)
2556 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2557 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2560 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2561 qedf->bdq_pbl, qedf->bdq_pbl_dma);
2563 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2564 if (qedf->bdq[i].buf_addr) {
2565 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2566 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2571 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2574 struct global_queue **gl = qedf->global_queues;
2576 for (i = 0; i < qedf->num_queues; i++) {
2581 dma_free_coherent(&qedf->pdev->dev,
2582 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2584 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2585 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2590 qedf_free_bdq(qedf);
2593 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2596 struct scsi_bd *pbl;
2600 /* Alloc dma memory for BDQ buffers */
2601 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2602 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2603 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2604 if (!qedf->bdq[i].buf_addr) {
2605 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2611 /* Alloc dma memory for BDQ page buffer list */
2612 qedf->bdq_pbl_mem_size =
2613 QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2614 qedf->bdq_pbl_mem_size =
2615 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2617 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2618 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2619 if (!qedf->bdq_pbl) {
2620 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2624 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2625 "BDQ PBL addr=0x%p dma=%pad\n",
2626 qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2629 * Populate BDQ PBL with physical and virtual address of individual
2632 pbl = (struct scsi_bd *)qedf->bdq_pbl;
2633 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2634 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2635 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2637 /* Opaque lo data is an index into the BDQ array */
2638 pbl->opaque.lo = cpu_to_le32(i);
2642 /* Allocate list of PBL pages */
2643 qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev,
2644 QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL);
2645 if (!qedf->bdq_pbl_list) {
2646 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2651 * Now populate PBL list with pages that contain pointers to the
2652 * individual buffers.
2654 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2656 list = (u64 *)qedf->bdq_pbl_list;
2657 page = qedf->bdq_pbl_list_dma;
2658 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2659 *list = qedf->bdq_pbl_dma;
2661 page += QEDF_PAGE_SIZE;
2667 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2676 /* Allocate and map CQs, RQs */
2678 * Number of global queues (CQ / RQ). This should
2679 * be <= number of available MSIX vectors for the PF
2681 if (!qedf->num_queues) {
2682 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2687 * Make sure we allocated the PBL that will contain the physical
2688 * addresses of our queues
2690 if (!qedf->p_cpuq) {
2692 goto mem_alloc_failure;
2695 qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2696 * qedf->num_queues), GFP_KERNEL);
2697 if (!qedf->global_queues) {
2698 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2699 "queues array ptr memory\n");
2702 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2703 "qedf->global_queues=%p.\n", qedf->global_queues);
2705 /* Allocate DMA coherent buffers for BDQ */
2706 rc = qedf_alloc_bdq(qedf);
2708 goto mem_alloc_failure;
2710 /* Allocate a CQ and an associated PBL for each MSI-X vector */
2711 for (i = 0; i < qedf->num_queues; i++) {
2712 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2714 if (!qedf->global_queues[i]) {
2715 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2716 "global queue %d.\n", i);
2718 goto mem_alloc_failure;
2721 qedf->global_queues[i]->cq_mem_size =
2722 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2723 qedf->global_queues[i]->cq_mem_size =
2724 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2726 qedf->global_queues[i]->cq_pbl_size =
2727 (qedf->global_queues[i]->cq_mem_size /
2728 PAGE_SIZE) * sizeof(void *);
2729 qedf->global_queues[i]->cq_pbl_size =
2730 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2732 qedf->global_queues[i]->cq =
2733 dma_zalloc_coherent(&qedf->pdev->dev,
2734 qedf->global_queues[i]->cq_mem_size,
2735 &qedf->global_queues[i]->cq_dma, GFP_KERNEL);
2737 if (!qedf->global_queues[i]->cq) {
2738 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2740 goto mem_alloc_failure;
2743 qedf->global_queues[i]->cq_pbl =
2744 dma_zalloc_coherent(&qedf->pdev->dev,
2745 qedf->global_queues[i]->cq_pbl_size,
2746 &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL);
2748 if (!qedf->global_queues[i]->cq_pbl) {
2749 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2751 goto mem_alloc_failure;
2755 num_pages = qedf->global_queues[i]->cq_mem_size /
2757 page = qedf->global_queues[i]->cq_dma;
2758 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2760 while (num_pages--) {
2761 *pbl = U64_LO(page);
2763 *pbl = U64_HI(page);
2765 page += QEDF_PAGE_SIZE;
2767 /* Set the initial consumer index for cq */
2768 qedf->global_queues[i]->cq_cons_idx = 0;
2771 list = (u32 *)qedf->p_cpuq;
2774 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2775 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
2776 * to the physical address which contains an array of pointers to
2777 * the physical addresses of the specific queue pages.
2779 for (i = 0; i < qedf->num_queues; i++) {
2780 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2782 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2793 qedf_free_global_queues(qedf);
2797 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2799 u8 sq_num_pbl_pages;
2806 * The number of completion queues/fastpath interrupts/status blocks
2807 * we allocation is the minimum off:
2810 * Number allocated by qed for our PCI function
2812 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
2814 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
2817 qedf->p_cpuq = pci_alloc_consistent(qedf->pdev,
2818 qedf->num_queues * sizeof(struct qedf_glbl_q_params),
2821 if (!qedf->p_cpuq) {
2822 QEDF_ERR(&(qedf->dbg_ctx), "pci_alloc_consistent failed.\n");
2826 rval = qedf_alloc_global_queues(qedf);
2828 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
2833 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
2834 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
2835 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
2836 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
2838 /* Calculate CQ num entries */
2839 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2840 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
2841 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
2843 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
2845 /* Setup the value for fcoe PF */
2846 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
2847 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
2848 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
2849 (u64)qedf->hw_p_cpuq;
2850 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
2852 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
2854 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
2855 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
2857 /* log_page_size: 12 for 4KB pages */
2858 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
2860 qedf->pf_params.fcoe_pf_params.mtu = 9000;
2861 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
2862 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
2864 /* BDQ address and size */
2865 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
2866 qedf->bdq_pbl_list_dma;
2867 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
2868 qedf->bdq_pbl_list_num_entries;
2869 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
2871 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2872 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
2874 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
2875 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
2877 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2878 "cq_num_entries=%d.\n",
2879 qedf->pf_params.fcoe_pf_params.cq_num_entries);
2884 /* Free DMA coherent memory for array of queue pointers we pass to qed */
2885 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
2890 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
2891 pci_free_consistent(qedf->pdev, size, qedf->p_cpuq,
2895 qedf_free_global_queues(qedf);
2897 if (qedf->global_queues)
2898 kfree(qedf->global_queues);
2902 * PCI driver functions
2905 static const struct pci_device_id qedf_pci_tbl[] = {
2906 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
2907 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
2910 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
2912 static struct pci_driver qedf_pci_driver = {
2913 .name = QEDF_MODULE_NAME,
2914 .id_table = qedf_pci_tbl,
2915 .probe = qedf_probe,
2916 .remove = qedf_remove,
2919 static int __qedf_probe(struct pci_dev *pdev, int mode)
2922 struct fc_lport *lport;
2923 struct qedf_ctx *qedf;
2924 struct Scsi_Host *host;
2926 struct qed_ll2_params params;
2928 struct qed_link_params link_params;
2930 void *task_start, *task_end;
2931 struct qed_slowpath_params slowpath_params;
2932 struct qed_probe_params qed_params;
2936 * When doing error recovery we didn't reap the lport so don't try
2939 if (mode != QEDF_MODE_RECOVERY) {
2940 lport = libfc_host_alloc(&qedf_host_template,
2941 sizeof(struct qedf_ctx));
2944 QEDF_ERR(NULL, "Could not allocate lport.\n");
2949 /* Initialize qedf_ctx */
2950 qedf = lport_priv(lport);
2951 qedf->lport = lport;
2952 qedf->ctlr.lp = lport;
2954 qedf->dbg_ctx.pdev = pdev;
2955 qedf->dbg_ctx.host_no = lport->host->host_no;
2956 spin_lock_init(&qedf->hba_lock);
2957 INIT_LIST_HEAD(&qedf->fcports);
2958 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
2959 atomic_set(&qedf->num_offloads, 0);
2960 qedf->stop_io_on_error = false;
2961 pci_set_drvdata(pdev, qedf);
2962 init_completion(&qedf->fipvlan_compl);
2964 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
2965 "QLogic FastLinQ FCoE Module qedf %s, "
2966 "FW %d.%d.%d.%d\n", QEDF_VERSION,
2967 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
2968 FW_ENGINEERING_VERSION);
2970 /* Init pointers during recovery */
2971 qedf = pci_get_drvdata(pdev);
2972 lport = qedf->lport;
2977 /* Allocate mempool for qedf_io_work structs */
2978 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
2979 qedf_io_work_cache);
2980 if (qedf->io_mempool == NULL) {
2981 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
2984 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
2987 sprintf(host_buf, "qedf_%u_link",
2988 qedf->lport->host->host_no);
2989 qedf->link_update_wq = create_workqueue(host_buf);
2990 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
2991 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
2993 qedf->fipvlan_retries = qedf_fipvlan_retries;
2996 * Common probe. Takes care of basic hardware init and pci_*
2999 memset(&qed_params, 0, sizeof(qed_params));
3000 qed_params.protocol = QED_PROTOCOL_FCOE;
3001 qed_params.dp_module = qedf_dp_module;
3002 qed_params.dp_level = qedf_dp_level;
3003 qed_params.is_vf = is_vf;
3004 qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3010 /* Learn information crucial for qedf to progress */
3011 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3013 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3017 /* queue allocation code should come here
3020 * status block allocation
3021 * interrupt registration (to get min number of queues)
3023 * qed_sp_fcoe_func_start
3025 rc = qedf_set_fcoe_pf_param(qedf);
3027 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3030 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3032 /* Record BDQ producer doorbell addresses */
3033 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3034 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3035 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3036 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3037 qedf->bdq_secondary_prod);
3039 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3041 rc = qedf_prepare_sb(qedf);
3044 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3048 /* Start the Slowpath-process */
3049 slowpath_params.int_mode = QED_INT_MODE_MSIX;
3050 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3051 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3052 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3053 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3054 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3055 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3057 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3062 * update_pf_params needs to be called before and after slowpath
3065 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3067 /* Setup interrupts */
3068 rc = qedf_setup_int(qedf);
3072 rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3074 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3077 task_start = qedf_get_task_mem(&qedf->tasks, 0);
3078 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3079 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3080 "end=%p block_size=%u.\n", task_start, task_end,
3084 * We need to write the number of BDs in the BDQ we've preallocated so
3085 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3088 qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3089 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3090 "Writing %d to primary and secondary BDQ doorbell registers.\n",
3091 qedf->bdq_prod_idx);
3092 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3093 tmp = readw(qedf->bdq_primary_prod);
3094 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3095 tmp = readw(qedf->bdq_secondary_prod);
3097 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3099 /* Now that the dev_info struct has been filled in set the MAC
3102 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3103 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3107 * Set the WWNN and WWPN in the following way:
3109 * If the info we get from qed is non-zero then use that to set the
3110 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3111 * on the MAC address.
3113 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3114 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3115 "Setting WWPN and WWNN from qed dev_info.\n");
3116 qedf->wwnn = qedf->dev_info.wwnn;
3117 qedf->wwpn = qedf->dev_info.wwpn;
3119 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3120 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3121 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3122 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3124 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx "
3125 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3127 sprintf(host_buf, "host_%d", host->host_no);
3128 qed_ops->common->set_name(qedf->cdev, host_buf);
3131 /* Set xid max values */
3132 qedf->max_scsi_xid = QEDF_MAX_SCSI_XID;
3133 qedf->max_els_xid = QEDF_MAX_ELS_XID;
3135 /* Allocate cmd mgr */
3136 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3137 if (!qedf->cmd_mgr) {
3138 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3142 if (mode != QEDF_MODE_RECOVERY) {
3143 host->transportt = qedf_fc_transport_template;
3144 host->can_queue = QEDF_MAX_ELS_XID;
3145 host->max_lun = qedf_max_lun;
3146 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3147 rc = scsi_add_host(host, &pdev->dev);
3152 memset(¶ms, 0, sizeof(params));
3154 ether_addr_copy(params.ll2_mac_address, qedf->mac);
3156 /* Start LL2 processing thread */
3157 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3159 create_workqueue(host_buf);
3160 if (!qedf->ll2_recv_wq) {
3161 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3165 #ifdef CONFIG_DEBUG_FS
3166 qedf_dbg_host_init(&(qedf->dbg_ctx), &qedf_debugfs_ops,
3171 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3172 rc = qed_ops->ll2->start(qedf->cdev, ¶ms);
3174 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3177 set_bit(QEDF_LL2_STARTED, &qedf->flags);
3179 /* Set initial FIP/FCoE VLAN to NULL */
3183 * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3184 * they were not reaped during the unload process.
3186 if (mode != QEDF_MODE_RECOVERY) {
3187 /* Setup imbedded fcoe controller */
3188 qedf_fcoe_ctlr_setup(qedf);
3191 rc = qedf_lport_setup(qedf);
3193 QEDF_ERR(&(qedf->dbg_ctx),
3194 "qedf_lport_setup failed.\n");
3199 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3200 qedf->timer_work_queue =
3201 create_workqueue(host_buf);
3202 if (!qedf->timer_work_queue) {
3203 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3208 /* DPC workqueue is not reaped during recovery unload */
3209 if (mode != QEDF_MODE_RECOVERY) {
3210 sprintf(host_buf, "qedf_%u_dpc",
3211 qedf->lport->host->host_no);
3212 qedf->dpc_wq = create_workqueue(host_buf);
3216 * GRC dump and sysfs parameters are not reaped during the recovery
3219 if (mode != QEDF_MODE_RECOVERY) {
3220 qedf->grcdump_size = qed_ops->common->dbg_grc_size(qedf->cdev);
3221 if (qedf->grcdump_size) {
3222 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3223 qedf->grcdump_size);
3225 QEDF_ERR(&(qedf->dbg_ctx),
3226 "GRC Dump buffer alloc failed.\n");
3227 qedf->grcdump = NULL;
3230 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3231 "grcdump: addr=%p, size=%u.\n",
3232 qedf->grcdump, qedf->grcdump_size);
3234 qedf_create_sysfs_ctx_attr(qedf);
3236 /* Initialize I/O tracing for this adapter */
3237 spin_lock_init(&qedf->io_trace_lock);
3238 qedf->io_trace_idx = 0;
3241 init_completion(&qedf->flogi_compl);
3243 status = qed_ops->common->update_drv_state(qedf->cdev, true);
3245 QEDF_ERR(&(qedf->dbg_ctx),
3246 "Failed to send drv state to MFW.\n");
3248 memset(&link_params, 0, sizeof(struct qed_link_params));
3249 link_params.link_up = true;
3250 status = qed_ops->common->set_link(qedf->cdev, &link_params);
3252 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3254 /* Start/restart discovery */
3255 if (mode == QEDF_MODE_RECOVERY)
3256 fcoe_ctlr_link_up(&qedf->ctlr);
3258 fc_fabric_login(lport);
3264 if (qedf->ll2_recv_wq)
3265 destroy_workqueue(qedf->ll2_recv_wq);
3266 fc_remove_host(qedf->lport->host);
3267 scsi_remove_host(qedf->lport->host);
3268 #ifdef CONFIG_DEBUG_FS
3269 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3272 qedf_cmd_mgr_free(qedf->cmd_mgr);
3274 qed_ops->stop(qedf->cdev);
3276 qedf_free_fcoe_pf_param(qedf);
3277 qedf_sync_free_irqs(qedf);
3279 qed_ops->common->slowpath_stop(qedf->cdev);
3281 qed_ops->common->remove(qedf->cdev);
3283 scsi_host_put(lport->host);
3288 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3290 return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3293 static void __qedf_remove(struct pci_dev *pdev, int mode)
3295 struct qedf_ctx *qedf;
3299 QEDF_ERR(NULL, "pdev is NULL.\n");
3303 qedf = pci_get_drvdata(pdev);
3306 * Prevent race where we're in board disable work and then try to
3309 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3310 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3314 if (mode != QEDF_MODE_RECOVERY)
3315 set_bit(QEDF_UNLOADING, &qedf->flags);
3317 /* Logoff the fabric to upload all connections */
3318 if (mode == QEDF_MODE_RECOVERY)
3319 fcoe_ctlr_link_down(&qedf->ctlr);
3321 fc_fabric_logoff(qedf->lport);
3322 qedf_wait_for_upload(qedf);
3324 #ifdef CONFIG_DEBUG_FS
3325 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3328 /* Stop any link update handling */
3329 cancel_delayed_work_sync(&qedf->link_update);
3330 destroy_workqueue(qedf->link_update_wq);
3331 qedf->link_update_wq = NULL;
3333 if (qedf->timer_work_queue)
3334 destroy_workqueue(qedf->timer_work_queue);
3337 clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3338 qed_ops->ll2->stop(qedf->cdev);
3339 if (qedf->ll2_recv_wq)
3340 destroy_workqueue(qedf->ll2_recv_wq);
3343 qedf_sync_free_irqs(qedf);
3344 qedf_destroy_sb(qedf);
3347 * During recovery don't destroy OS constructs that represent the
3350 if (mode != QEDF_MODE_RECOVERY) {
3351 qedf_free_grc_dump_buf(&qedf->grcdump);
3352 qedf_remove_sysfs_ctx_attr(qedf);
3354 /* Remove all SCSI/libfc/libfcoe structures */
3355 fcoe_ctlr_destroy(&qedf->ctlr);
3356 fc_lport_destroy(qedf->lport);
3357 fc_remove_host(qedf->lport->host);
3358 scsi_remove_host(qedf->lport->host);
3361 qedf_cmd_mgr_free(qedf->cmd_mgr);
3363 if (mode != QEDF_MODE_RECOVERY) {
3364 fc_exch_mgr_free(qedf->lport);
3365 fc_lport_free_stats(qedf->lport);
3367 /* Wait for all vports to be reaped */
3368 qedf_wait_for_vport_destroy(qedf);
3372 * Now that all connections have been uploaded we can stop the
3373 * rest of the qed operations
3375 qed_ops->stop(qedf->cdev);
3377 if (mode != QEDF_MODE_RECOVERY) {
3379 /* Stop general DPC handling */
3380 destroy_workqueue(qedf->dpc_wq);
3381 qedf->dpc_wq = NULL;
3385 /* Final shutdown for the board */
3386 qedf_free_fcoe_pf_param(qedf);
3387 if (mode != QEDF_MODE_RECOVERY) {
3388 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3389 pci_set_drvdata(pdev, NULL);
3392 rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3394 QEDF_ERR(&(qedf->dbg_ctx),
3395 "Failed to send drv state to MFW.\n");
3397 qed_ops->common->slowpath_stop(qedf->cdev);
3398 qed_ops->common->remove(qedf->cdev);
3400 mempool_destroy(qedf->io_mempool);
3402 /* Only reap the Scsi_host on a real removal */
3403 if (mode != QEDF_MODE_RECOVERY)
3404 scsi_host_put(qedf->lport->host);
3407 static void qedf_remove(struct pci_dev *pdev)
3409 /* Check to make sure this function wasn't already disabled */
3410 if (!atomic_read(&pdev->enable_cnt))
3413 __qedf_remove(pdev, QEDF_MODE_NORMAL);
3417 * Module Init/Remove
3420 static int __init qedf_init(void)
3424 /* If debug=1 passed, set the default log mask */
3425 if (qedf_debug == QEDF_LOG_DEFAULT)
3426 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3428 /* Print driver banner */
3429 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3432 /* Create kmem_cache for qedf_io_work structs */
3433 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3434 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3435 if (qedf_io_work_cache == NULL) {
3436 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3439 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3440 qedf_io_work_cache);
3442 qed_ops = qed_get_fcoe_ops();
3444 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3448 #ifdef CONFIG_DEBUG_FS
3449 qedf_dbg_init("qedf");
3452 qedf_fc_transport_template =
3453 fc_attach_transport(&qedf_fc_transport_fn);
3454 if (!qedf_fc_transport_template) {
3455 QEDF_ERR(NULL, "Could not register with FC transport\n");
3459 qedf_fc_vport_transport_template =
3460 fc_attach_transport(&qedf_fc_vport_transport_fn);
3461 if (!qedf_fc_vport_transport_template) {
3462 QEDF_ERR(NULL, "Could not register vport template with FC "
3467 qedf_io_wq = create_workqueue("qedf_io_wq");
3469 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3473 qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3475 ret = pci_register_driver(&qedf_pci_driver);
3477 QEDF_ERR(NULL, "Failed to register driver\n");
3484 destroy_workqueue(qedf_io_wq);
3486 fc_release_transport(qedf_fc_vport_transport_template);
3488 fc_release_transport(qedf_fc_transport_template);
3490 #ifdef CONFIG_DEBUG_FS
3498 static void __exit qedf_cleanup(void)
3500 pci_unregister_driver(&qedf_pci_driver);
3502 destroy_workqueue(qedf_io_wq);
3504 fc_release_transport(qedf_fc_vport_transport_template);
3505 fc_release_transport(qedf_fc_transport_template);
3506 #ifdef CONFIG_DEBUG_FS
3511 kmem_cache_destroy(qedf_io_work_cache);
3514 MODULE_LICENSE("GPL");
3515 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3516 MODULE_AUTHOR("QLogic Corporation");
3517 MODULE_VERSION(QEDF_VERSION);
3518 module_init(qedf_init);
3519 module_exit(qedf_cleanup);