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 static int qedf_eh_bus_reset(struct scsi_cmnd *sc_cmd)
684 QEDF_ERR(NULL, "BUS RESET Issued...\n");
686 * Essentially a no-op but return SUCCESS to prevent
687 * unnecessary escalation to the host reset handler.
692 void qedf_wait_for_upload(struct qedf_ctx *qedf)
695 if (atomic_read(&qedf->num_offloads))
696 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
697 "Waiting for all uploads to complete.\n");
704 /* Performs soft reset of qedf_ctx by simulating a link down/up */
705 static void qedf_ctx_soft_reset(struct fc_lport *lport)
707 struct qedf_ctx *qedf;
710 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
714 qedf = lport_priv(lport);
716 /* For host reset, essentially do a soft link up/down */
717 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
718 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
719 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
721 qedf_wait_for_upload(qedf);
722 atomic_set(&qedf->link_state, QEDF_LINK_UP);
724 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
728 /* Reset the host by gracefully logging out and then logging back in */
729 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
731 struct fc_lport *lport;
732 struct qedf_ctx *qedf;
734 lport = shost_priv(sc_cmd->device->host);
735 qedf = lport_priv(lport);
737 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
738 test_bit(QEDF_UNLOADING, &qedf->flags))
741 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
743 qedf_ctx_soft_reset(lport);
748 static int qedf_slave_configure(struct scsi_device *sdev)
750 if (qedf_queue_depth) {
751 scsi_change_queue_depth(sdev, qedf_queue_depth);
757 static struct scsi_host_template qedf_host_template = {
758 .module = THIS_MODULE,
759 .name = QEDF_MODULE_NAME,
762 .use_clustering = ENABLE_CLUSTERING,
763 .max_sectors = 0xffff,
764 .queuecommand = qedf_queuecommand,
765 .shost_attrs = qedf_host_attrs,
766 .eh_abort_handler = qedf_eh_abort,
767 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
768 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
769 .eh_bus_reset_handler = qedf_eh_bus_reset,
770 .eh_host_reset_handler = qedf_eh_host_reset,
771 .slave_configure = qedf_slave_configure,
772 .dma_boundary = QED_HW_DMA_BOUNDARY,
773 .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
774 .can_queue = FCOE_PARAMS_NUM_TASKS,
775 .change_queue_depth = scsi_change_queue_depth,
778 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
782 spin_lock(&qedf_global_lock);
783 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
784 spin_unlock(&qedf_global_lock);
789 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
791 struct qedf_rport *fcport;
792 struct fc_rport_priv *rdata;
795 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
796 rdata = fcport->rdata;
799 if (rdata->ids.port_id == port_id) {
806 /* Return NULL to caller to let them know fcport was not found */
810 /* Transmits an ELS frame over an offloaded session */
811 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
813 struct fc_frame_header *fh;
816 fh = fc_frame_header_get(fp);
817 if ((fh->fh_type == FC_TYPE_ELS) &&
818 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
819 switch (fc_frame_payload_op(fp)) {
821 qedf_send_adisc(fcport, fp);
831 * qedf_xmit - qedf FCoE frame transmit function
834 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
836 struct fc_lport *base_lport;
837 struct qedf_ctx *qedf;
839 struct fcoe_crc_eof *cp;
841 struct fc_frame_header *fh;
845 unsigned int hlen, tlen, elen;
847 struct fc_stats *stats;
848 struct fc_lport *tmp_lport;
849 struct fc_lport *vn_port = NULL;
850 struct qedf_rport *fcport;
854 qedf = (struct qedf_ctx *)lport_priv(lport);
856 fh = fc_frame_header_get(fp);
859 /* Filter out traffic to other NPIV ports on the same host */
861 base_lport = shost_priv(vport_to_shost(lport->vport));
865 /* Flag if the destination is the base port */
866 if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
867 vn_port = base_lport;
869 /* Got through the list of vports attached to the base_lport
870 * and see if we have a match with the destination address.
872 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
873 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
879 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
880 struct fc_rport_priv *rdata = NULL;
882 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
883 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
885 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
887 rdata->retries = lport->max_rport_retry_count;
890 /* End NPIV filtering */
892 if (!qedf->ctlr.sel_fcf) {
897 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
898 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
903 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
904 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
909 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
910 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
914 /* Check to see if this needs to be sent on an offloaded session */
915 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
917 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
918 rc = qedf_xmit_l2_frame(fcport, fp);
920 * If the frame was successfully sent over the middle path
921 * then do not try to also send it over the LL2 path
930 elen = sizeof(struct ethhdr);
931 hlen = sizeof(struct fcoe_hdr);
932 tlen = sizeof(struct fcoe_crc_eof);
933 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
935 skb->ip_summed = CHECKSUM_NONE;
936 crc = fcoe_fc_crc(fp);
938 /* copy port crc and eof to the skb buff */
939 if (skb_is_nonlinear(skb)) {
942 if (qedf_get_paged_crc_eof(skb, tlen)) {
946 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
947 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
949 cp = skb_put(skb, tlen);
952 memset(cp, 0, sizeof(*cp));
954 cp->fcoe_crc32 = cpu_to_le32(~crc);
955 if (skb_is_nonlinear(skb)) {
961 /* adjust skb network/transport offsets to match mac/fcoe/port */
962 skb_push(skb, elen + hlen);
963 skb_reset_mac_header(skb);
964 skb_reset_network_header(skb);
966 skb->protocol = htons(ETH_P_FCOE);
969 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
970 * for FIP/FCoE traffic.
972 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
974 /* fill up mac and fcoe headers */
976 eh->h_proto = htons(ETH_P_FCOE);
977 if (qedf->ctlr.map_dest)
978 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
980 /* insert GW address */
981 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
983 /* Set the source MAC address */
984 ether_addr_copy(eh->h_source, qedf->data_src_addr);
986 hp = (struct fcoe_hdr *)(eh + 1);
987 memset(hp, 0, sizeof(*hp));
989 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
993 stats = per_cpu_ptr(lport->stats, get_cpu());
995 stats->TxWords += wlen;
998 /* Get VLAN ID from skb for printing purposes */
999 __vlan_hwaccel_get_tag(skb, &vlan_tci);
1001 /* send down to lld */
1003 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1004 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1005 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1007 if (qedf_dump_frames)
1008 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1009 1, skb->data, skb->len, false);
1010 qed_ops->ll2->start_xmit(qedf->cdev, skb);
1015 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1022 /* Calculate appropriate queue and PBL sizes */
1023 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1024 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1025 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1027 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1029 fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev,
1030 fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL);
1032 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1037 fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev,
1038 fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL);
1039 if (!fcport->sq_pbl) {
1040 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1046 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1047 page = fcport->sq_dma;
1048 pbl = (u32 *)fcport->sq_pbl;
1050 while (num_pages--) {
1051 *pbl = U64_LO(page);
1053 *pbl = U64_HI(page);
1055 page += QEDF_PAGE_SIZE;
1061 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1067 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1070 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1071 fcport->sq_pbl, fcport->sq_pbl_dma);
1073 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1074 fcport->sq, fcport->sq_dma);
1077 static int qedf_offload_connection(struct qedf_ctx *qedf,
1078 struct qedf_rport *fcport)
1080 struct qed_fcoe_params_offload conn_info;
1083 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1085 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1086 "portid=%06x.\n", fcport->rdata->ids.port_id);
1087 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1088 &fcport->fw_cid, &fcport->p_doorbell);
1090 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1091 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1092 rval = 1; /* For some reason qed returns 0 on failure here */
1096 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1097 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1098 fcport->fw_cid, fcport->handle);
1100 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1102 /* Fill in the offload connection info */
1103 conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1105 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1106 conn_info.sq_next_page_addr =
1107 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1109 /* Need to use our FCoE MAC for the offload session */
1110 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1112 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1114 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1115 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1116 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1117 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1120 conn_info.vlan_tag = qedf->vlan_id <<
1121 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1122 conn_info.vlan_tag |=
1123 qedf_default_prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1124 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1125 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1127 /* Set host port source id */
1128 port_id = fc_host_port_id(qedf->lport->host);
1129 fcport->sid = port_id;
1130 conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1131 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1132 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1134 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1136 /* Set remote port destination id */
1137 port_id = fcport->rdata->rport->port_id;
1138 conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1139 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1140 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1142 conn_info.def_q_idx = 0; /* Default index for send queue? */
1144 /* Set FC-TAPE specific flags if needed */
1145 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1146 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1147 "Enable CONF, REC for portid=%06x.\n",
1148 fcport->rdata->ids.port_id);
1149 conn_info.flags |= 1 <<
1150 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1152 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1153 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1156 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1158 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1159 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1162 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1163 "succeeded portid=%06x total_sqe=%d.\n",
1164 fcport->rdata->ids.port_id, total_sqe);
1166 spin_lock_init(&fcport->rport_lock);
1167 atomic_set(&fcport->free_sqes, total_sqe);
1170 qed_ops->release_conn(qedf->cdev, fcport->handle);
1175 #define QEDF_TERM_BUFF_SIZE 10
1176 static void qedf_upload_connection(struct qedf_ctx *qedf,
1177 struct qedf_rport *fcport)
1180 dma_addr_t term_params_dma;
1182 /* Term params needs to be a DMA coherent buffer as qed shared the
1183 * physical DMA address with the firmware. The buffer may be used in
1184 * the receive path so we may eventually have to move this.
1186 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1187 &term_params_dma, GFP_KERNEL);
1189 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1190 "port_id=%06x.\n", fcport->rdata->ids.port_id);
1192 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1193 qed_ops->release_conn(qedf->cdev, fcport->handle);
1195 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1199 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1200 struct qedf_rport *fcport)
1202 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1203 fcport->rdata->ids.port_id);
1205 /* Flush any remaining i/o's before we upload the connection */
1206 qedf_flush_active_ios(fcport, -1);
1208 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1209 qedf_upload_connection(qedf, fcport);
1210 qedf_free_sq(qedf, fcport);
1211 fcport->rdata = NULL;
1212 fcport->qedf = NULL;
1216 * This event_callback is called after successful completion of libfc
1217 * initiated target login. qedf can proceed with initiating the session
1220 static void qedf_rport_event_handler(struct fc_lport *lport,
1221 struct fc_rport_priv *rdata,
1222 enum fc_rport_event event)
1224 struct qedf_ctx *qedf = lport_priv(lport);
1225 struct fc_rport *rport = rdata->rport;
1226 struct fc_rport_libfc_priv *rp;
1227 struct qedf_rport *fcport;
1230 unsigned long flags;
1232 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1233 "port_id = 0x%x\n", event, rdata->ids.port_id);
1236 case RPORT_EV_READY:
1238 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1242 rp = rport->dd_data;
1243 fcport = (struct qedf_rport *)&rp[1];
1244 fcport->qedf = qedf;
1246 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1247 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1248 "portid=0x%x as max number of offloaded sessions "
1249 "reached.\n", rdata->ids.port_id);
1254 * Don't try to offload the session again. Can happen when we
1257 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1258 QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1259 "offloaded, portid=0x%x.\n",
1260 rdata->ids.port_id);
1264 if (rport->port_id == FC_FID_DIR_SERV) {
1266 * qedf_rport structure doesn't exist for
1268 * We should not come here, as lport will
1269 * take care of fabric login
1271 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1272 "exist for dir server port_id=%x\n",
1273 rdata->ids.port_id);
1277 if (rdata->spp_type != FC_TYPE_FCP) {
1278 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1279 "Not offloading since spp type isn't FCP\n");
1282 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1283 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1284 "Not FCP target so not offloading\n");
1288 fcport->rdata = rdata;
1289 fcport->rport = rport;
1291 rval = qedf_alloc_sq(qedf, fcport);
1293 qedf_cleanup_fcport(qedf, fcport);
1297 /* Set device type */
1298 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1299 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1300 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1301 fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1302 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1303 "portid=%06x is a TAPE device.\n",
1304 rdata->ids.port_id);
1306 fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1309 rval = qedf_offload_connection(qedf, fcport);
1311 qedf_cleanup_fcport(qedf, fcport);
1315 /* Add fcport to list of qedf_ctx list of offloaded ports */
1316 spin_lock_irqsave(&qedf->hba_lock, flags);
1317 list_add_rcu(&fcport->peers, &qedf->fcports);
1318 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1321 * Set the session ready bit to let everyone know that this
1322 * connection is ready for I/O
1324 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1325 atomic_inc(&qedf->num_offloads);
1329 case RPORT_EV_FAILED:
1331 port_id = rdata->ids.port_id;
1332 if (port_id == FC_FID_DIR_SERV)
1336 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1337 "port_id=%x - rport notcreated Yet!!\n", port_id);
1340 rp = rport->dd_data;
1342 * Perform session upload. Note that rdata->peers is already
1343 * removed from disc->rports list before we get this event.
1345 fcport = (struct qedf_rport *)&rp[1];
1347 /* Only free this fcport if it is offloaded already */
1348 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1349 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags);
1350 qedf_cleanup_fcport(qedf, fcport);
1353 * Remove fcport to list of qedf_ctx list of offloaded
1356 spin_lock_irqsave(&qedf->hba_lock, flags);
1357 list_del_rcu(&fcport->peers);
1358 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1360 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1362 atomic_dec(&qedf->num_offloads);
1372 static void qedf_abort_io(struct fc_lport *lport)
1374 /* NO-OP but need to fill in the template */
1377 static void qedf_fcp_cleanup(struct fc_lport *lport)
1380 * NO-OP but need to fill in template to prevent a NULL
1381 * function pointer dereference during link down. I/Os
1382 * will be flushed when port is uploaded.
1386 static struct libfc_function_template qedf_lport_template = {
1387 .frame_send = qedf_xmit,
1388 .fcp_abort_io = qedf_abort_io,
1389 .fcp_cleanup = qedf_fcp_cleanup,
1390 .rport_event_callback = qedf_rport_event_handler,
1391 .elsct_send = qedf_elsct_send,
1394 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1396 fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO);
1398 qedf->ctlr.send = qedf_fip_send;
1399 qedf->ctlr.get_src_addr = qedf_get_src_mac;
1400 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1403 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1405 struct fc_lport *lport = qedf->lport;
1406 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1411 * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1413 lport->fdmi_enabled = 1;
1416 * Setup the necessary fc_host attributes to that will be used to fill
1417 * in the FDMI information.
1420 /* Get the PCI-e Device Serial Number Capability */
1421 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1424 for (i = 0; i < 8; i++)
1425 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1427 snprintf(fc_host->serial_number,
1428 sizeof(fc_host->serial_number),
1429 "%02X%02X%02X%02X%02X%02X%02X%02X",
1430 buf[7], buf[6], buf[5], buf[4],
1431 buf[3], buf[2], buf[1], buf[0]);
1433 snprintf(fc_host->serial_number,
1434 sizeof(fc_host->serial_number), "Unknown");
1436 snprintf(fc_host->manufacturer,
1437 sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1439 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1441 snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1442 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1445 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1446 "Rev %d", qedf->pdev->revision);
1448 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1449 "%s", QEDF_VERSION);
1451 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1452 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1453 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1456 static int qedf_lport_setup(struct qedf_ctx *qedf)
1458 struct fc_lport *lport = qedf->lport;
1461 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1462 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1463 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1464 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1465 lport->boot_time = jiffies;
1466 lport->e_d_tov = 2 * 1000;
1467 lport->r_a_tov = 10 * 1000;
1469 /* Set NPIV support */
1470 lport->does_npiv = 1;
1471 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1473 fc_set_wwnn(lport, qedf->wwnn);
1474 fc_set_wwpn(lport, qedf->wwpn);
1476 fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0);
1478 /* Allocate the exchange manager */
1479 fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1,
1480 qedf->max_els_xid, NULL);
1482 if (fc_lport_init_stats(lport))
1485 /* Finish lport config */
1486 fc_lport_config(lport);
1488 /* Set max frame size */
1489 fc_set_mfs(lport, QEDF_MFS);
1490 fc_host_maxframe_size(lport->host) = lport->mfs;
1492 /* Set default dev_loss_tmo based on module parameter */
1493 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1495 /* Set symbolic node name */
1496 snprintf(fc_host_symbolic_name(lport->host), 256,
1497 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1499 qedf_setup_fdmi(qedf);
1508 static int qedf_vport_libfc_config(struct fc_vport *vport,
1509 struct fc_lport *lport)
1513 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1514 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1515 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1516 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1517 lport->boot_time = jiffies;
1518 lport->e_d_tov = 2 * 1000;
1519 lport->r_a_tov = 10 * 1000;
1520 lport->does_npiv = 1; /* Temporary until we add NPIV support */
1522 /* Allocate stats for vport */
1523 if (fc_lport_init_stats(lport))
1526 /* Finish lport config */
1527 fc_lport_config(lport);
1529 /* offload related configuration */
1530 lport->crc_offload = 0;
1531 lport->seq_offload = 0;
1532 lport->lro_enabled = 0;
1539 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1541 struct Scsi_Host *shost = vport_to_shost(vport);
1542 struct fc_lport *n_port = shost_priv(shost);
1543 struct fc_lport *vn_port;
1544 struct qedf_ctx *base_qedf = lport_priv(n_port);
1545 struct qedf_ctx *vport_qedf;
1550 rc = fcoe_validate_vport_create(vport);
1552 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1553 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1554 "WWPN (0x%s) already exists.\n", buf);
1558 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1559 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1560 "because link is not up.\n");
1565 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1567 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1573 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1574 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1577 /* Copy some fields from base_qedf */
1578 vport_qedf = lport_priv(vn_port);
1579 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1581 /* Set qedf data specific to this vport */
1582 vport_qedf->lport = vn_port;
1583 /* Use same hba_lock as base_qedf */
1584 vport_qedf->hba_lock = base_qedf->hba_lock;
1585 vport_qedf->pdev = base_qedf->pdev;
1586 vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1587 init_completion(&vport_qedf->flogi_compl);
1588 INIT_LIST_HEAD(&vport_qedf->fcports);
1590 rc = qedf_vport_libfc_config(vport, vn_port);
1592 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1593 "for lport stats.\n");
1597 fc_set_wwnn(vn_port, vport->node_name);
1598 fc_set_wwpn(vn_port, vport->port_name);
1599 vport_qedf->wwnn = vn_port->wwnn;
1600 vport_qedf->wwpn = vn_port->wwpn;
1602 vn_port->host->transportt = qedf_fc_vport_transport_template;
1603 vn_port->host->can_queue = QEDF_MAX_ELS_XID;
1604 vn_port->host->max_lun = qedf_max_lun;
1605 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1606 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1608 rc = scsi_add_host(vn_port->host, &vport->dev);
1610 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n");
1614 /* Set default dev_loss_tmo based on module parameter */
1615 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1617 /* Init libfc stuffs */
1618 memcpy(&vn_port->tt, &qedf_lport_template,
1619 sizeof(qedf_lport_template));
1620 fc_exch_init(vn_port);
1621 fc_elsct_init(vn_port);
1622 fc_lport_init(vn_port);
1623 fc_disc_init(vn_port);
1624 fc_disc_config(vn_port, vn_port);
1627 /* Allocate the exchange manager */
1628 shost = vport_to_shost(vport);
1629 n_port = shost_priv(shost);
1630 fc_exch_mgr_list_clone(n_port, vn_port);
1632 /* Set max frame size */
1633 fc_set_mfs(vn_port, QEDF_MFS);
1635 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1638 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1640 vn_port->boot_time = jiffies;
1641 fc_fabric_login(vn_port);
1642 fc_vport_setlink(vn_port);
1645 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1648 /* Set up debug context for vport */
1649 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1650 vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1653 scsi_host_put(vn_port->host);
1658 static int qedf_vport_destroy(struct fc_vport *vport)
1660 struct Scsi_Host *shost = vport_to_shost(vport);
1661 struct fc_lport *n_port = shost_priv(shost);
1662 struct fc_lport *vn_port = vport->dd_data;
1664 mutex_lock(&n_port->lp_mutex);
1665 list_del(&vn_port->list);
1666 mutex_unlock(&n_port->lp_mutex);
1668 fc_fabric_logoff(vn_port);
1669 fc_lport_destroy(vn_port);
1671 /* Detach from scsi-ml */
1672 fc_remove_host(vn_port->host);
1673 scsi_remove_host(vn_port->host);
1676 * Only try to release the exchange manager if the vn_port
1677 * configuration is complete.
1679 if (vn_port->state == LPORT_ST_READY)
1680 fc_exch_mgr_free(vn_port);
1682 /* Free memory used by statistical counters */
1683 fc_lport_free_stats(vn_port);
1685 /* Release Scsi_Host */
1687 scsi_host_put(vn_port->host);
1692 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1694 struct fc_lport *lport = vport->dd_data;
1697 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1698 fc_fabric_logoff(lport);
1700 lport->boot_time = jiffies;
1701 fc_fabric_login(lport);
1702 fc_vport_setlink(lport);
1708 * During removal we need to wait for all the vports associated with a port
1709 * to be destroyed so we avoid a race condition where libfc is still trying
1710 * to reap vports while the driver remove function has already reaped the
1711 * driver contexts associated with the physical port.
1713 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1715 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1717 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1719 while (fc_host->npiv_vports_inuse > 0) {
1720 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1721 "Waiting for all vports to be reaped.\n");
1727 * qedf_fcoe_reset - Resets the fcoe
1729 * @shost: shost the reset is from
1733 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1735 struct fc_lport *lport = shost_priv(shost);
1737 qedf_ctx_soft_reset(lport);
1741 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1744 struct fc_host_statistics *qedf_stats;
1745 struct fc_lport *lport = shost_priv(shost);
1746 struct qedf_ctx *qedf = lport_priv(lport);
1747 struct qed_fcoe_stats *fw_fcoe_stats;
1749 qedf_stats = fc_get_host_stats(shost);
1751 /* We don't collect offload stats for specific NPIV ports */
1755 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1756 if (!fw_fcoe_stats) {
1757 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1758 "fw_fcoe_stats.\n");
1762 /* Query firmware for offload stats */
1763 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1766 * The expectation is that we add our offload stats to the stats
1767 * being maintained by libfc each time the fc_get_host_status callback
1768 * is invoked. The additions are not carried over for each call to
1769 * the fc_get_host_stats callback.
1771 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1772 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1773 fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1774 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1775 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1776 fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1777 qedf_stats->fcp_input_megabytes +=
1778 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1779 qedf_stats->fcp_output_megabytes +=
1780 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1781 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1782 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1783 qedf_stats->invalid_crc_count +=
1784 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1785 qedf_stats->dumped_frames =
1786 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1787 qedf_stats->error_frames +=
1788 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1789 qedf_stats->fcp_input_requests += qedf->input_requests;
1790 qedf_stats->fcp_output_requests += qedf->output_requests;
1791 qedf_stats->fcp_control_requests += qedf->control_requests;
1792 qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1793 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1795 kfree(fw_fcoe_stats);
1800 static struct fc_function_template qedf_fc_transport_fn = {
1801 .show_host_node_name = 1,
1802 .show_host_port_name = 1,
1803 .show_host_supported_classes = 1,
1804 .show_host_supported_fc4s = 1,
1805 .show_host_active_fc4s = 1,
1806 .show_host_maxframe_size = 1,
1808 .show_host_port_id = 1,
1809 .show_host_supported_speeds = 1,
1810 .get_host_speed = fc_get_host_speed,
1811 .show_host_speed = 1,
1812 .show_host_port_type = 1,
1813 .get_host_port_state = fc_get_host_port_state,
1814 .show_host_port_state = 1,
1815 .show_host_symbolic_name = 1,
1818 * Tell FC transport to allocate enough space to store the backpointer
1819 * for the associate qedf_rport struct.
1821 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1822 sizeof(struct qedf_rport)),
1823 .show_rport_maxframe_size = 1,
1824 .show_rport_supported_classes = 1,
1825 .show_host_fabric_name = 1,
1826 .show_starget_node_name = 1,
1827 .show_starget_port_name = 1,
1828 .show_starget_port_id = 1,
1829 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1830 .show_rport_dev_loss_tmo = 1,
1831 .get_fc_host_stats = qedf_fc_get_host_stats,
1832 .issue_fc_host_lip = qedf_fcoe_reset,
1833 .vport_create = qedf_vport_create,
1834 .vport_delete = qedf_vport_destroy,
1835 .vport_disable = qedf_vport_disable,
1836 .bsg_request = fc_lport_bsg_request,
1839 static struct fc_function_template qedf_fc_vport_transport_fn = {
1840 .show_host_node_name = 1,
1841 .show_host_port_name = 1,
1842 .show_host_supported_classes = 1,
1843 .show_host_supported_fc4s = 1,
1844 .show_host_active_fc4s = 1,
1845 .show_host_maxframe_size = 1,
1846 .show_host_port_id = 1,
1847 .show_host_supported_speeds = 1,
1848 .get_host_speed = fc_get_host_speed,
1849 .show_host_speed = 1,
1850 .show_host_port_type = 1,
1851 .get_host_port_state = fc_get_host_port_state,
1852 .show_host_port_state = 1,
1853 .show_host_symbolic_name = 1,
1854 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1855 sizeof(struct qedf_rport)),
1856 .show_rport_maxframe_size = 1,
1857 .show_rport_supported_classes = 1,
1858 .show_host_fabric_name = 1,
1859 .show_starget_node_name = 1,
1860 .show_starget_port_name = 1,
1861 .show_starget_port_id = 1,
1862 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1863 .show_rport_dev_loss_tmo = 1,
1864 .get_fc_host_stats = fc_get_host_stats,
1865 .issue_fc_host_lip = qedf_fcoe_reset,
1866 .bsg_request = fc_lport_bsg_request,
1869 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
1871 struct qedf_ctx *qedf = fp->qedf;
1872 struct global_queue *que;
1873 struct qed_sb_info *sb_info = fp->sb_info;
1874 struct status_block *sb = sb_info->sb_virt;
1877 /* Get the pointer to the global CQ this completion is on */
1878 que = qedf->global_queues[fp->sb_id];
1880 /* Be sure all responses have been written to PI */
1883 /* Get the current firmware producer index */
1884 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1886 return (que->cq_prod_idx != prod_idx);
1890 * Interrupt handler code.
1893 /* Process completion queue and copy CQE contents for deferred processesing
1895 * Return true if we should wake the I/O thread, false if not.
1897 static bool qedf_process_completions(struct qedf_fastpath *fp)
1899 struct qedf_ctx *qedf = fp->qedf;
1900 struct qed_sb_info *sb_info = fp->sb_info;
1901 struct status_block *sb = sb_info->sb_virt;
1902 struct global_queue *que;
1904 struct fcoe_cqe *cqe;
1905 struct qedf_io_work *io_work;
1906 int num_handled = 0;
1908 struct qedf_ioreq *io_req = NULL;
1913 /* Get the current firmware producer index */
1914 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1916 /* Get the pointer to the global CQ this completion is on */
1917 que = qedf->global_queues[fp->sb_id];
1919 /* Calculate the amount of new elements since last processing */
1920 new_cqes = (prod_idx >= que->cq_prod_idx) ?
1921 (prod_idx - que->cq_prod_idx) :
1922 0x10000 - que->cq_prod_idx + prod_idx;
1924 /* Save producer index */
1925 que->cq_prod_idx = prod_idx;
1930 cqe = &que->cq[que->cq_cons_idx];
1932 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
1933 FCOE_CQE_CQE_TYPE_MASK;
1936 * Process unsolicited CQEs directly in the interrupt handler
1937 * sine we need the fastpath ID
1939 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
1940 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
1941 "Unsolicated CQE.\n");
1942 qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
1944 * Don't add a work list item. Increment consumer
1945 * consumer index and move on.
1950 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
1951 io_req = &qedf->cmd_mgr->cmds[xid];
1954 * Figure out which percpu thread we should queue this I/O
1958 /* If there is not io_req assocated with this CQE
1959 * just queue it on CPU 0
1964 io_req->int_cpu = smp_processor_id();
1967 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
1969 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
1970 "work for I/O completion.\n");
1973 memset(io_work, 0, sizeof(struct qedf_io_work));
1975 INIT_WORK(&io_work->work, qedf_fp_io_handler);
1977 /* Copy contents of CQE for deferred processing */
1978 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
1980 io_work->qedf = fp->qedf;
1981 io_work->fp = NULL; /* Only used for unsolicited frames */
1983 queue_work_on(cpu, qedf_io_wq, &io_work->work);
1987 if (que->cq_cons_idx == fp->cq_num_entries)
1988 que->cq_cons_idx = 0;
1996 /* MSI-X fastpath handler code */
1997 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
1999 struct qedf_fastpath *fp = dev_id;
2002 QEDF_ERR(NULL, "fp is null.\n");
2006 QEDF_ERR(NULL, "fp->sb_info in null.");
2011 * Disable interrupts for this status block while we process new
2014 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2017 qedf_process_completions(fp);
2019 if (qedf_fp_has_work(fp) == 0) {
2020 /* Update the sb information */
2021 qed_sb_update_sb_idx(fp->sb_info);
2023 /* Check for more work */
2026 if (qedf_fp_has_work(fp) == 0) {
2027 /* Re-enable interrupts */
2028 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2034 /* Do we ever want to break out of above loop? */
2038 /* simd handler for MSI/INTa */
2039 static void qedf_simd_int_handler(void *cookie)
2041 /* Cookie is qedf_ctx struct */
2042 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2044 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2047 #define QEDF_SIMD_HANDLER_NUM 0
2048 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2052 if (qedf->int_info.msix_cnt) {
2053 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2054 synchronize_irq(qedf->int_info.msix[i].vector);
2055 irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2057 irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
2059 free_irq(qedf->int_info.msix[i].vector,
2060 &qedf->fp_array[i]);
2063 qed_ops->common->simd_handler_clean(qedf->cdev,
2064 QEDF_SIMD_HANDLER_NUM);
2066 qedf->int_info.used_cnt = 0;
2067 qed_ops->common->set_fp_int(qedf->cdev, 0);
2070 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2074 cpu = cpumask_first(cpu_online_mask);
2075 for (i = 0; i < qedf->num_queues; i++) {
2076 rc = request_irq(qedf->int_info.msix[i].vector,
2077 qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
2080 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2081 qedf_sync_free_irqs(qedf);
2085 qedf->int_info.used_cnt++;
2086 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2088 cpu = cpumask_next(cpu, cpu_online_mask);
2094 static int qedf_setup_int(struct qedf_ctx *qedf)
2099 * Learn interrupt configuration
2101 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2105 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2109 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2110 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2113 if (qedf->int_info.msix_cnt)
2114 return qedf_request_msix_irq(qedf);
2116 qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2117 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2118 qedf->int_info.used_cnt = 1;
2123 /* Main function for libfc frame reception */
2124 static void qedf_recv_frame(struct qedf_ctx *qedf,
2125 struct sk_buff *skb)
2128 struct fc_lport *lport;
2129 struct fc_frame_header *fh;
2130 struct fcoe_crc_eof crc_eof;
2131 struct fc_frame *fp;
2133 u8 *dest_mac = NULL;
2134 struct fcoe_hdr *hp;
2135 struct qedf_rport *fcport;
2136 struct fc_lport *vn_port;
2139 lport = qedf->lport;
2140 if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2141 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2146 if (skb_is_nonlinear(skb))
2148 mac = eth_hdr(skb)->h_source;
2149 dest_mac = eth_hdr(skb)->h_dest;
2151 /* Pull the header */
2152 hp = (struct fcoe_hdr *)skb->data;
2153 fh = (struct fc_frame_header *) skb_transport_header(skb);
2154 skb_pull(skb, sizeof(struct fcoe_hdr));
2155 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2157 fp = (struct fc_frame *)skb;
2160 fr_sof(fp) = hp->fcoe_sof;
2161 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2165 fr_eof(fp) = crc_eof.fcoe_eof;
2166 fr_crc(fp) = crc_eof.fcoe_crc32;
2167 if (pskb_trim(skb, fr_len)) {
2172 fh = fc_frame_header_get(fp);
2175 * Invalid frame filters.
2178 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2179 fh->fh_type == FC_TYPE_FCP) {
2180 /* Drop FCP data. We dont this in L2 path */
2184 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2185 fh->fh_type == FC_TYPE_ELS) {
2186 switch (fc_frame_payload_op(fp)) {
2188 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2189 /* drop non-FIP LOGO */
2197 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2198 /* Drop incoming ABTS */
2203 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2204 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2205 "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2209 if (qedf->ctlr.state) {
2210 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2211 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2212 "Wrong source address: mac:%pM dest_addr:%pM.\n",
2213 mac, qedf->ctlr.dest_addr);
2219 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2222 * If the destination ID from the frame header does not match what we
2223 * have on record for lport and the search for a NPIV port came up
2224 * empty then this is not addressed to our port so simply drop it.
2226 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2227 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2228 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
2229 lport->port_id, ntoh24(fh->fh_d_id));
2234 f_ctl = ntoh24(fh->fh_f_ctl);
2235 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2236 (f_ctl & FC_FC_EX_CTX)) {
2237 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2243 * If a connection is uploading, drop incoming FCoE frames as there
2244 * is a small window where we could try to return a frame while libfc
2245 * is trying to clean things up.
2248 /* Get fcport associated with d_id if it exists */
2249 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2251 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2253 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2254 "Connection uploading, dropping fp=%p.\n", fp);
2259 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2260 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2261 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2263 if (qedf_dump_frames)
2264 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2265 1, skb->data, skb->len, false);
2266 fc_exch_recv(lport, fp);
2269 static void qedf_ll2_process_skb(struct work_struct *work)
2271 struct qedf_skb_work *skb_work =
2272 container_of(work, struct qedf_skb_work, work);
2273 struct qedf_ctx *qedf = skb_work->qedf;
2274 struct sk_buff *skb = skb_work->skb;
2278 QEDF_ERR(NULL, "qedf is NULL\n");
2282 eh = (struct ethhdr *)skb->data;
2284 /* Undo VLAN encapsulation */
2285 if (eh->h_proto == htons(ETH_P_8021Q)) {
2286 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2287 eh = skb_pull(skb, VLAN_HLEN);
2288 skb_reset_mac_header(skb);
2292 * Process either a FIP frame or FCoE frame based on the
2293 * protocol value. If it's not either just drop the
2296 if (eh->h_proto == htons(ETH_P_FIP)) {
2297 qedf_fip_recv(qedf, skb);
2299 } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2300 __skb_pull(skb, ETH_HLEN);
2301 qedf_recv_frame(qedf, skb);
2313 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2316 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2317 struct qedf_skb_work *skb_work;
2319 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2321 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2322 "dropping frame.\n");
2327 INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2328 skb_work->skb = skb;
2329 skb_work->qedf = qedf;
2330 queue_work(qedf->ll2_recv_wq, &skb_work->work);
2335 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2336 .rx_cb = qedf_ll2_rx,
2340 /* Main thread to process I/O completions */
2341 void qedf_fp_io_handler(struct work_struct *work)
2343 struct qedf_io_work *io_work =
2344 container_of(work, struct qedf_io_work, work);
2348 * Deferred part of unsolicited CQE sends
2351 comp_type = (io_work->cqe.cqe_data >>
2352 FCOE_CQE_CQE_TYPE_SHIFT) &
2353 FCOE_CQE_CQE_TYPE_MASK;
2354 if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2356 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2358 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2363 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2364 struct qed_sb_info *sb_info, u16 sb_id)
2366 struct status_block *sb_virt;
2370 sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2371 sizeof(struct status_block), &sb_phys, GFP_KERNEL);
2374 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2375 "for id = %d.\n", sb_id);
2379 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2380 sb_id, QED_SB_TYPE_STORAGE);
2383 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2384 "failed for id = %d.\n", sb_id);
2391 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2393 if (sb_info->sb_virt)
2394 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2395 (void *)sb_info->sb_virt, sb_info->sb_phys);
2398 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2401 struct qedf_fastpath *fp = NULL;
2403 for (id = 0; id < qedf->num_queues; id++) {
2404 fp = &(qedf->fp_array[id]);
2405 if (fp->sb_id == QEDF_SB_ID_NULL)
2407 qedf_free_sb(qedf, fp->sb_info);
2410 kfree(qedf->fp_array);
2413 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2416 struct qedf_fastpath *fp;
2420 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2423 if (!qedf->fp_array) {
2424 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2429 for (id = 0; id < qedf->num_queues; id++) {
2430 fp = &(qedf->fp_array[id]);
2431 fp->sb_id = QEDF_SB_ID_NULL;
2432 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2434 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2435 "allocation failed.\n");
2438 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2440 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2441 "initialization failed.\n");
2446 fp->cq_num_entries =
2447 qedf->global_queues[id]->cq_mem_size /
2448 sizeof(struct fcoe_cqe);
2454 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2457 struct qedf_ioreq *io_req;
2458 struct qedf_rport *fcport;
2461 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2462 FCOE_CQE_CQE_TYPE_MASK;
2464 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2465 io_req = &qedf->cmd_mgr->cmds[xid];
2467 /* Completion not for a valid I/O anymore so just return */
2471 fcport = io_req->fcport;
2473 if (fcport == NULL) {
2474 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2479 * Check that fcport is offloaded. If it isn't then the spinlock
2480 * isn't valid and shouldn't be taken. We should just return.
2482 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2483 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2488 switch (comp_type) {
2489 case FCOE_GOOD_COMPLETION_CQE_TYPE:
2490 atomic_inc(&fcport->free_sqes);
2491 switch (io_req->cmd_type) {
2493 qedf_scsi_completion(qedf, cqe, io_req);
2496 qedf_process_els_compl(qedf, cqe, io_req);
2498 case QEDF_TASK_MGMT_CMD:
2499 qedf_process_tmf_compl(qedf, cqe, io_req);
2501 case QEDF_SEQ_CLEANUP:
2502 qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2506 case FCOE_ERROR_DETECTION_CQE_TYPE:
2507 atomic_inc(&fcport->free_sqes);
2508 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2509 "Error detect CQE.\n");
2510 qedf_process_error_detect(qedf, cqe, io_req);
2512 case FCOE_EXCH_CLEANUP_CQE_TYPE:
2513 atomic_inc(&fcport->free_sqes);
2514 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2516 qedf_process_cleanup_compl(qedf, cqe, io_req);
2518 case FCOE_ABTS_CQE_TYPE:
2519 atomic_inc(&fcport->free_sqes);
2520 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2522 qedf_process_abts_compl(qedf, cqe, io_req);
2524 case FCOE_DUMMY_CQE_TYPE:
2525 atomic_inc(&fcport->free_sqes);
2526 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2529 case FCOE_LOCAL_COMP_CQE_TYPE:
2530 atomic_inc(&fcport->free_sqes);
2531 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2532 "Local completion CQE.\n");
2534 case FCOE_WARNING_CQE_TYPE:
2535 atomic_inc(&fcport->free_sqes);
2536 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2538 qedf_process_warning_compl(qedf, cqe, io_req);
2540 case MAX_FCOE_CQE_TYPE:
2541 atomic_inc(&fcport->free_sqes);
2542 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2546 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2552 static void qedf_free_bdq(struct qedf_ctx *qedf)
2556 if (qedf->bdq_pbl_list)
2557 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2558 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2561 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2562 qedf->bdq_pbl, qedf->bdq_pbl_dma);
2564 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2565 if (qedf->bdq[i].buf_addr) {
2566 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2567 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2572 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2575 struct global_queue **gl = qedf->global_queues;
2577 for (i = 0; i < qedf->num_queues; i++) {
2582 dma_free_coherent(&qedf->pdev->dev,
2583 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2585 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2586 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2591 qedf_free_bdq(qedf);
2594 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2597 struct scsi_bd *pbl;
2601 /* Alloc dma memory for BDQ buffers */
2602 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2603 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2604 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2605 if (!qedf->bdq[i].buf_addr) {
2606 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2612 /* Alloc dma memory for BDQ page buffer list */
2613 qedf->bdq_pbl_mem_size =
2614 QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2615 qedf->bdq_pbl_mem_size =
2616 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2618 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2619 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2620 if (!qedf->bdq_pbl) {
2621 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2625 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2626 "BDQ PBL addr=0x%p dma=%pad\n",
2627 qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2630 * Populate BDQ PBL with physical and virtual address of individual
2633 pbl = (struct scsi_bd *)qedf->bdq_pbl;
2634 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2635 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2636 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2638 /* Opaque lo data is an index into the BDQ array */
2639 pbl->opaque.lo = cpu_to_le32(i);
2643 /* Allocate list of PBL pages */
2644 qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev,
2645 QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL);
2646 if (!qedf->bdq_pbl_list) {
2647 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2652 * Now populate PBL list with pages that contain pointers to the
2653 * individual buffers.
2655 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2657 list = (u64 *)qedf->bdq_pbl_list;
2658 page = qedf->bdq_pbl_list_dma;
2659 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2660 *list = qedf->bdq_pbl_dma;
2662 page += QEDF_PAGE_SIZE;
2668 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2677 /* Allocate and map CQs, RQs */
2679 * Number of global queues (CQ / RQ). This should
2680 * be <= number of available MSIX vectors for the PF
2682 if (!qedf->num_queues) {
2683 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2688 * Make sure we allocated the PBL that will contain the physical
2689 * addresses of our queues
2691 if (!qedf->p_cpuq) {
2693 goto mem_alloc_failure;
2696 qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2697 * qedf->num_queues), GFP_KERNEL);
2698 if (!qedf->global_queues) {
2699 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2700 "queues array ptr memory\n");
2703 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2704 "qedf->global_queues=%p.\n", qedf->global_queues);
2706 /* Allocate DMA coherent buffers for BDQ */
2707 rc = qedf_alloc_bdq(qedf);
2709 goto mem_alloc_failure;
2711 /* Allocate a CQ and an associated PBL for each MSI-X vector */
2712 for (i = 0; i < qedf->num_queues; i++) {
2713 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2715 if (!qedf->global_queues[i]) {
2716 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2717 "global queue %d.\n", i);
2719 goto mem_alloc_failure;
2722 qedf->global_queues[i]->cq_mem_size =
2723 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2724 qedf->global_queues[i]->cq_mem_size =
2725 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2727 qedf->global_queues[i]->cq_pbl_size =
2728 (qedf->global_queues[i]->cq_mem_size /
2729 PAGE_SIZE) * sizeof(void *);
2730 qedf->global_queues[i]->cq_pbl_size =
2731 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2733 qedf->global_queues[i]->cq =
2734 dma_zalloc_coherent(&qedf->pdev->dev,
2735 qedf->global_queues[i]->cq_mem_size,
2736 &qedf->global_queues[i]->cq_dma, GFP_KERNEL);
2738 if (!qedf->global_queues[i]->cq) {
2739 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2741 goto mem_alloc_failure;
2744 qedf->global_queues[i]->cq_pbl =
2745 dma_zalloc_coherent(&qedf->pdev->dev,
2746 qedf->global_queues[i]->cq_pbl_size,
2747 &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL);
2749 if (!qedf->global_queues[i]->cq_pbl) {
2750 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2752 goto mem_alloc_failure;
2756 num_pages = qedf->global_queues[i]->cq_mem_size /
2758 page = qedf->global_queues[i]->cq_dma;
2759 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2761 while (num_pages--) {
2762 *pbl = U64_LO(page);
2764 *pbl = U64_HI(page);
2766 page += QEDF_PAGE_SIZE;
2768 /* Set the initial consumer index for cq */
2769 qedf->global_queues[i]->cq_cons_idx = 0;
2772 list = (u32 *)qedf->p_cpuq;
2775 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2776 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
2777 * to the physical address which contains an array of pointers to
2778 * the physical addresses of the specific queue pages.
2780 for (i = 0; i < qedf->num_queues; i++) {
2781 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2783 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2794 qedf_free_global_queues(qedf);
2798 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2800 u8 sq_num_pbl_pages;
2807 * The number of completion queues/fastpath interrupts/status blocks
2808 * we allocation is the minimum off:
2811 * Number of MSI-X vectors
2812 * Max number allocated in hardware (QEDF_MAX_NUM_CQS)
2814 qedf->num_queues = min((unsigned int)QEDF_MAX_NUM_CQS,
2817 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
2820 qedf->p_cpuq = pci_alloc_consistent(qedf->pdev,
2821 qedf->num_queues * sizeof(struct qedf_glbl_q_params),
2824 if (!qedf->p_cpuq) {
2825 QEDF_ERR(&(qedf->dbg_ctx), "pci_alloc_consistent failed.\n");
2829 rval = qedf_alloc_global_queues(qedf);
2831 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
2836 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
2837 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
2838 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
2839 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
2841 /* Calculate CQ num entries */
2842 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2843 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
2844 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
2846 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
2848 /* Setup the value for fcoe PF */
2849 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
2850 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
2851 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
2852 (u64)qedf->hw_p_cpuq;
2853 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
2855 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
2857 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
2858 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
2860 /* log_page_size: 12 for 4KB pages */
2861 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
2863 qedf->pf_params.fcoe_pf_params.mtu = 9000;
2864 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
2865 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
2867 /* BDQ address and size */
2868 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
2869 qedf->bdq_pbl_list_dma;
2870 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
2871 qedf->bdq_pbl_list_num_entries;
2872 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
2874 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2875 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
2877 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
2878 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
2880 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2881 "cq_num_entries=%d.\n",
2882 qedf->pf_params.fcoe_pf_params.cq_num_entries);
2887 /* Free DMA coherent memory for array of queue pointers we pass to qed */
2888 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
2893 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
2894 pci_free_consistent(qedf->pdev, size, qedf->p_cpuq,
2898 qedf_free_global_queues(qedf);
2900 if (qedf->global_queues)
2901 kfree(qedf->global_queues);
2905 * PCI driver functions
2908 static const struct pci_device_id qedf_pci_tbl[] = {
2909 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
2910 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
2913 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
2915 static struct pci_driver qedf_pci_driver = {
2916 .name = QEDF_MODULE_NAME,
2917 .id_table = qedf_pci_tbl,
2918 .probe = qedf_probe,
2919 .remove = qedf_remove,
2922 static int __qedf_probe(struct pci_dev *pdev, int mode)
2925 struct fc_lport *lport;
2926 struct qedf_ctx *qedf;
2927 struct Scsi_Host *host;
2929 struct qed_ll2_params params;
2931 struct qed_link_params link_params;
2933 void *task_start, *task_end;
2934 struct qed_slowpath_params slowpath_params;
2935 struct qed_probe_params qed_params;
2939 * When doing error recovery we didn't reap the lport so don't try
2942 if (mode != QEDF_MODE_RECOVERY) {
2943 lport = libfc_host_alloc(&qedf_host_template,
2944 sizeof(struct qedf_ctx));
2947 QEDF_ERR(NULL, "Could not allocate lport.\n");
2952 /* Initialize qedf_ctx */
2953 qedf = lport_priv(lport);
2954 qedf->lport = lport;
2955 qedf->ctlr.lp = lport;
2957 qedf->dbg_ctx.pdev = pdev;
2958 qedf->dbg_ctx.host_no = lport->host->host_no;
2959 spin_lock_init(&qedf->hba_lock);
2960 INIT_LIST_HEAD(&qedf->fcports);
2961 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
2962 atomic_set(&qedf->num_offloads, 0);
2963 qedf->stop_io_on_error = false;
2964 pci_set_drvdata(pdev, qedf);
2965 init_completion(&qedf->fipvlan_compl);
2967 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
2968 "QLogic FastLinQ FCoE Module qedf %s, "
2969 "FW %d.%d.%d.%d\n", QEDF_VERSION,
2970 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
2971 FW_ENGINEERING_VERSION);
2973 /* Init pointers during recovery */
2974 qedf = pci_get_drvdata(pdev);
2975 lport = qedf->lport;
2980 /* Allocate mempool for qedf_io_work structs */
2981 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
2982 qedf_io_work_cache);
2983 if (qedf->io_mempool == NULL) {
2984 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
2987 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
2990 sprintf(host_buf, "qedf_%u_link",
2991 qedf->lport->host->host_no);
2992 qedf->link_update_wq = create_workqueue(host_buf);
2993 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
2994 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
2996 qedf->fipvlan_retries = qedf_fipvlan_retries;
2999 * Common probe. Takes care of basic hardware init and pci_*
3002 memset(&qed_params, 0, sizeof(qed_params));
3003 qed_params.protocol = QED_PROTOCOL_FCOE;
3004 qed_params.dp_module = qedf_dp_module;
3005 qed_params.dp_level = qedf_dp_level;
3006 qed_params.is_vf = is_vf;
3007 qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3013 /* queue allocation code should come here
3016 * status block allocation
3017 * interrupt registration (to get min number of queues)
3019 * qed_sp_fcoe_func_start
3021 rc = qedf_set_fcoe_pf_param(qedf);
3023 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3026 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3028 /* Learn information crucial for qedf to progress */
3029 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3031 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3035 /* Record BDQ producer doorbell addresses */
3036 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3037 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3038 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3039 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3040 qedf->bdq_secondary_prod);
3042 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3044 rc = qedf_prepare_sb(qedf);
3047 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3051 /* Start the Slowpath-process */
3052 slowpath_params.int_mode = QED_INT_MODE_MSIX;
3053 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3054 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3055 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3056 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3057 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3058 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3060 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3065 * update_pf_params needs to be called before and after slowpath
3068 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3070 /* Setup interrupts */
3071 rc = qedf_setup_int(qedf);
3075 rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3077 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3080 task_start = qedf_get_task_mem(&qedf->tasks, 0);
3081 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3082 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3083 "end=%p block_size=%u.\n", task_start, task_end,
3087 * We need to write the number of BDs in the BDQ we've preallocated so
3088 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3091 qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3092 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3093 "Writing %d to primary and secondary BDQ doorbell registers.\n",
3094 qedf->bdq_prod_idx);
3095 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3096 tmp = readw(qedf->bdq_primary_prod);
3097 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3098 tmp = readw(qedf->bdq_secondary_prod);
3100 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3102 /* Now that the dev_info struct has been filled in set the MAC
3105 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3106 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3110 * Set the WWNN and WWPN in the following way:
3112 * If the info we get from qed is non-zero then use that to set the
3113 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3114 * on the MAC address.
3116 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3117 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3118 "Setting WWPN and WWNN from qed dev_info.\n");
3119 qedf->wwnn = qedf->dev_info.wwnn;
3120 qedf->wwpn = qedf->dev_info.wwpn;
3122 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3123 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3124 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3125 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3127 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx "
3128 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3130 sprintf(host_buf, "host_%d", host->host_no);
3131 qed_ops->common->set_name(qedf->cdev, host_buf);
3134 /* Set xid max values */
3135 qedf->max_scsi_xid = QEDF_MAX_SCSI_XID;
3136 qedf->max_els_xid = QEDF_MAX_ELS_XID;
3138 /* Allocate cmd mgr */
3139 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3140 if (!qedf->cmd_mgr) {
3141 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3145 if (mode != QEDF_MODE_RECOVERY) {
3146 host->transportt = qedf_fc_transport_template;
3147 host->can_queue = QEDF_MAX_ELS_XID;
3148 host->max_lun = qedf_max_lun;
3149 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3150 rc = scsi_add_host(host, &pdev->dev);
3155 memset(¶ms, 0, sizeof(params));
3157 ether_addr_copy(params.ll2_mac_address, qedf->mac);
3159 /* Start LL2 processing thread */
3160 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3162 create_workqueue(host_buf);
3163 if (!qedf->ll2_recv_wq) {
3164 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3168 #ifdef CONFIG_DEBUG_FS
3169 qedf_dbg_host_init(&(qedf->dbg_ctx), &qedf_debugfs_ops,
3174 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3175 rc = qed_ops->ll2->start(qedf->cdev, ¶ms);
3177 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3180 set_bit(QEDF_LL2_STARTED, &qedf->flags);
3182 /* Set initial FIP/FCoE VLAN to NULL */
3186 * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3187 * they were not reaped during the unload process.
3189 if (mode != QEDF_MODE_RECOVERY) {
3190 /* Setup imbedded fcoe controller */
3191 qedf_fcoe_ctlr_setup(qedf);
3194 rc = qedf_lport_setup(qedf);
3196 QEDF_ERR(&(qedf->dbg_ctx),
3197 "qedf_lport_setup failed.\n");
3202 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3203 qedf->timer_work_queue =
3204 create_workqueue(host_buf);
3205 if (!qedf->timer_work_queue) {
3206 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3211 /* DPC workqueue is not reaped during recovery unload */
3212 if (mode != QEDF_MODE_RECOVERY) {
3213 sprintf(host_buf, "qedf_%u_dpc",
3214 qedf->lport->host->host_no);
3215 qedf->dpc_wq = create_workqueue(host_buf);
3219 * GRC dump and sysfs parameters are not reaped during the recovery
3222 if (mode != QEDF_MODE_RECOVERY) {
3223 qedf->grcdump_size = qed_ops->common->dbg_grc_size(qedf->cdev);
3224 if (qedf->grcdump_size) {
3225 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3226 qedf->grcdump_size);
3228 QEDF_ERR(&(qedf->dbg_ctx),
3229 "GRC Dump buffer alloc failed.\n");
3230 qedf->grcdump = NULL;
3233 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3234 "grcdump: addr=%p, size=%u.\n",
3235 qedf->grcdump, qedf->grcdump_size);
3237 qedf_create_sysfs_ctx_attr(qedf);
3239 /* Initialize I/O tracing for this adapter */
3240 spin_lock_init(&qedf->io_trace_lock);
3241 qedf->io_trace_idx = 0;
3244 init_completion(&qedf->flogi_compl);
3246 memset(&link_params, 0, sizeof(struct qed_link_params));
3247 link_params.link_up = true;
3248 status = qed_ops->common->set_link(qedf->cdev, &link_params);
3250 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3252 /* Start/restart discovery */
3253 if (mode == QEDF_MODE_RECOVERY)
3254 fcoe_ctlr_link_up(&qedf->ctlr);
3256 fc_fabric_login(lport);
3262 if (qedf->ll2_recv_wq)
3263 destroy_workqueue(qedf->ll2_recv_wq);
3264 fc_remove_host(qedf->lport->host);
3265 scsi_remove_host(qedf->lport->host);
3266 #ifdef CONFIG_DEBUG_FS
3267 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3270 qedf_cmd_mgr_free(qedf->cmd_mgr);
3272 qed_ops->stop(qedf->cdev);
3274 qedf_free_fcoe_pf_param(qedf);
3275 qedf_sync_free_irqs(qedf);
3277 qed_ops->common->slowpath_stop(qedf->cdev);
3279 qed_ops->common->remove(qedf->cdev);
3281 scsi_host_put(lport->host);
3286 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3288 return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3291 static void __qedf_remove(struct pci_dev *pdev, int mode)
3293 struct qedf_ctx *qedf;
3296 QEDF_ERR(NULL, "pdev is NULL.\n");
3300 qedf = pci_get_drvdata(pdev);
3303 * Prevent race where we're in board disable work and then try to
3306 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3307 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3311 if (mode != QEDF_MODE_RECOVERY)
3312 set_bit(QEDF_UNLOADING, &qedf->flags);
3314 /* Logoff the fabric to upload all connections */
3315 if (mode == QEDF_MODE_RECOVERY)
3316 fcoe_ctlr_link_down(&qedf->ctlr);
3318 fc_fabric_logoff(qedf->lport);
3319 qedf_wait_for_upload(qedf);
3321 #ifdef CONFIG_DEBUG_FS
3322 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3325 /* Stop any link update handling */
3326 cancel_delayed_work_sync(&qedf->link_update);
3327 destroy_workqueue(qedf->link_update_wq);
3328 qedf->link_update_wq = NULL;
3330 if (qedf->timer_work_queue)
3331 destroy_workqueue(qedf->timer_work_queue);
3334 clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3335 qed_ops->ll2->stop(qedf->cdev);
3336 if (qedf->ll2_recv_wq)
3337 destroy_workqueue(qedf->ll2_recv_wq);
3340 qedf_sync_free_irqs(qedf);
3341 qedf_destroy_sb(qedf);
3344 * During recovery don't destroy OS constructs that represent the
3347 if (mode != QEDF_MODE_RECOVERY) {
3348 qedf_free_grc_dump_buf(&qedf->grcdump);
3349 qedf_remove_sysfs_ctx_attr(qedf);
3351 /* Remove all SCSI/libfc/libfcoe structures */
3352 fcoe_ctlr_destroy(&qedf->ctlr);
3353 fc_lport_destroy(qedf->lport);
3354 fc_remove_host(qedf->lport->host);
3355 scsi_remove_host(qedf->lport->host);
3358 qedf_cmd_mgr_free(qedf->cmd_mgr);
3360 if (mode != QEDF_MODE_RECOVERY) {
3361 fc_exch_mgr_free(qedf->lport);
3362 fc_lport_free_stats(qedf->lport);
3364 /* Wait for all vports to be reaped */
3365 qedf_wait_for_vport_destroy(qedf);
3369 * Now that all connections have been uploaded we can stop the
3370 * rest of the qed operations
3372 qed_ops->stop(qedf->cdev);
3374 if (mode != QEDF_MODE_RECOVERY) {
3376 /* Stop general DPC handling */
3377 destroy_workqueue(qedf->dpc_wq);
3378 qedf->dpc_wq = NULL;
3382 /* Final shutdown for the board */
3383 qedf_free_fcoe_pf_param(qedf);
3384 if (mode != QEDF_MODE_RECOVERY) {
3385 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3386 pci_set_drvdata(pdev, NULL);
3388 qed_ops->common->slowpath_stop(qedf->cdev);
3389 qed_ops->common->remove(qedf->cdev);
3391 mempool_destroy(qedf->io_mempool);
3393 /* Only reap the Scsi_host on a real removal */
3394 if (mode != QEDF_MODE_RECOVERY)
3395 scsi_host_put(qedf->lport->host);
3398 static void qedf_remove(struct pci_dev *pdev)
3400 /* Check to make sure this function wasn't already disabled */
3401 if (!atomic_read(&pdev->enable_cnt))
3404 __qedf_remove(pdev, QEDF_MODE_NORMAL);
3408 * Module Init/Remove
3411 static int __init qedf_init(void)
3415 /* If debug=1 passed, set the default log mask */
3416 if (qedf_debug == QEDF_LOG_DEFAULT)
3417 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3419 /* Print driver banner */
3420 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3423 /* Create kmem_cache for qedf_io_work structs */
3424 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3425 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3426 if (qedf_io_work_cache == NULL) {
3427 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3430 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3431 qedf_io_work_cache);
3433 qed_ops = qed_get_fcoe_ops();
3435 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3439 #ifdef CONFIG_DEBUG_FS
3440 qedf_dbg_init("qedf");
3443 qedf_fc_transport_template =
3444 fc_attach_transport(&qedf_fc_transport_fn);
3445 if (!qedf_fc_transport_template) {
3446 QEDF_ERR(NULL, "Could not register with FC transport\n");
3450 qedf_fc_vport_transport_template =
3451 fc_attach_transport(&qedf_fc_vport_transport_fn);
3452 if (!qedf_fc_vport_transport_template) {
3453 QEDF_ERR(NULL, "Could not register vport template with FC "
3458 qedf_io_wq = create_workqueue("qedf_io_wq");
3460 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3464 qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3466 ret = pci_register_driver(&qedf_pci_driver);
3468 QEDF_ERR(NULL, "Failed to register driver\n");
3475 destroy_workqueue(qedf_io_wq);
3477 fc_release_transport(qedf_fc_vport_transport_template);
3479 fc_release_transport(qedf_fc_transport_template);
3481 #ifdef CONFIG_DEBUG_FS
3489 static void __exit qedf_cleanup(void)
3491 pci_unregister_driver(&qedf_pci_driver);
3493 destroy_workqueue(qedf_io_wq);
3495 fc_release_transport(qedf_fc_vport_transport_template);
3496 fc_release_transport(qedf_fc_transport_template);
3497 #ifdef CONFIG_DEBUG_FS
3502 kmem_cache_destroy(qedf_io_work_cache);
3505 MODULE_LICENSE("GPL");
3506 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3507 MODULE_AUTHOR("QLogic Corporation");
3508 MODULE_VERSION(QEDF_VERSION);
3509 module_init(qedf_init);
3510 module_exit(qedf_cleanup);