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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / net / ethernet / cavium / liquidio / lio_main.c
blobeab05b5534ea09586a27acc46616cc785cc1df46
1 /**********************************************************************
2 * Author: Cavium, Inc.
3 *
4 * Contact: support@cavium.com
5 * Please include "LiquidIO" in the subject.
6 *
7 * Copyright (c) 2003-2016 Cavium, Inc.
8 *
9 * This file is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License, Version 2, as
11 * published by the Free Software Foundation.
12 *
13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT. See the GNU General Public License for more details.
17 ***********************************************************************/
18 #include <linux/module.h>
19 #include <linux/interrupt.h>
20 #include <linux/pci.h>
21 #include <linux/firmware.h>
22 #include <net/vxlan.h>
23 #include <linux/kthread.h>
24 #include "liquidio_common.h"
25 #include "octeon_droq.h"
26 #include "octeon_iq.h"
27 #include "response_manager.h"
28 #include "octeon_device.h"
29 #include "octeon_nic.h"
30 #include "octeon_main.h"
31 #include "octeon_network.h"
32 #include "cn66xx_regs.h"
33 #include "cn66xx_device.h"
34 #include "cn68xx_device.h"
35 #include "cn23xx_pf_device.h"
36 #include "liquidio_image.h"
37 #include "lio_vf_rep.h"
38
39 MODULE_AUTHOR("Cavium Networks, <support@cavium.com>");
40 MODULE_DESCRIPTION("Cavium LiquidIO Intelligent Server Adapter Driver");
41 MODULE_LICENSE("GPL");
42 MODULE_VERSION(LIQUIDIO_VERSION);
43 MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_210SV_NAME
44 "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX);
45 MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_210NV_NAME
46 "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX);
47 MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_410NV_NAME
48 "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX);
49 MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_23XX_NAME
50 "_" LIO_FW_NAME_TYPE_NIC LIO_FW_NAME_SUFFIX);
51
52 static int ddr_timeout = 10000;
53 module_param(ddr_timeout, int, 0644);
54 MODULE_PARM_DESC(ddr_timeout,
55 "Number of milliseconds to wait for DDR initialization. 0 waits for ddr_timeout to be set to non-zero value before starting to check");
56
57 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
58
59 static int debug = -1;
60 module_param(debug, int, 0644);
61 MODULE_PARM_DESC(debug, "NETIF_MSG debug bits");
62
63 static char fw_type[LIO_MAX_FW_TYPE_LEN] = LIO_FW_NAME_TYPE_AUTO;
64 module_param_string(fw_type, fw_type, sizeof(fw_type), 0444);
65 MODULE_PARM_DESC(fw_type, "Type of firmware to be loaded (default is \"auto\"), which uses firmware in flash, if present, else loads \"nic\".");
66
67 static u32 console_bitmask;
68 module_param(console_bitmask, int, 0644);
69 MODULE_PARM_DESC(console_bitmask,
70 "Bitmask indicating which consoles have debug output redirected to syslog.");
71
72 /**
73 * \brief determines if a given console has debug enabled.
74 * @param console console to check
75 * @returns 1 = enabled. 0 otherwise
76 */
77 static int octeon_console_debug_enabled(u32 console)
78 {
79 return (console_bitmask >> (console)) & 0x1;
80 }
81
82 /* Polling interval for determining when NIC application is alive */
83 #define LIQUIDIO_STARTER_POLL_INTERVAL_MS 100
84
85 /* runtime link query interval */
86 #define LIQUIDIO_LINK_QUERY_INTERVAL_MS 1000
87 /* update localtime to octeon firmware every 60 seconds.
88 * make firmware to use same time reference, so that it will be easy to
89 * correlate firmware logged events/errors with host events, for debugging.
90 */
91 #define LIO_SYNC_OCTEON_TIME_INTERVAL_MS 60000
92
93 /* time to wait for possible in-flight requests in milliseconds */
94 #define WAIT_INFLIGHT_REQUEST msecs_to_jiffies(1000)
95
96 struct lio_trusted_vf_ctx {
97 struct completion complete;
98 int status;
99 };
100
101 struct oct_link_status_resp {
102 u64 rh;
103 struct oct_link_info link_info;
104 u64 status;
105 };
106
107 struct oct_timestamp_resp {
108 u64 rh;
109 u64 timestamp;
110 u64 status;
111 };
112
113 #define OCT_TIMESTAMP_RESP_SIZE (sizeof(struct oct_timestamp_resp))
114
115 union tx_info {
116 u64 u64;
117 struct {
118 #ifdef __BIG_ENDIAN_BITFIELD
119 u16 gso_size;
120 u16 gso_segs;
121 u32 reserved;
122 #else
123 u32 reserved;
124 u16 gso_segs;
125 u16 gso_size;
126 #endif
127 } s;
128 };
129
130 /** Octeon device properties to be used by the NIC module.
131 * Each octeon device in the system will be represented
132 * by this structure in the NIC module.
133 */
134
135 #define OCTNIC_GSO_MAX_HEADER_SIZE 128
136 #define OCTNIC_GSO_MAX_SIZE \
137 (CN23XX_DEFAULT_INPUT_JABBER - OCTNIC_GSO_MAX_HEADER_SIZE)
138
139 struct handshake {
140 struct completion init;
141 struct completion started;
142 struct pci_dev *pci_dev;
143 int init_ok;
144 int started_ok;
145 };
146
147 #ifdef CONFIG_PCI_IOV
148 static int liquidio_enable_sriov(struct pci_dev *dev, int num_vfs);
149 #endif
150
151 static int octeon_dbg_console_print(struct octeon_device *oct, u32 console_num,
152 char *prefix, char *suffix);
153
154 static int octeon_device_init(struct octeon_device *);
155 static int liquidio_stop(struct net_device *netdev);
156 static void liquidio_remove(struct pci_dev *pdev);
157 static int liquidio_probe(struct pci_dev *pdev,
158 const struct pci_device_id *ent);
159 static int liquidio_set_vf_link_state(struct net_device *netdev, int vfidx,
160 int linkstate);
161
162 static struct handshake handshake[MAX_OCTEON_DEVICES];
163 static struct completion first_stage;
164
165 static void octeon_droq_bh(unsigned long pdev)
166 {
167 int q_no;
168 int reschedule = 0;
169 struct octeon_device *oct = (struct octeon_device *)pdev;
170 struct octeon_device_priv *oct_priv =
171 (struct octeon_device_priv *)oct->priv;
172
173 for (q_no = 0; q_no < MAX_OCTEON_OUTPUT_QUEUES(oct); q_no++) {
174 if (!(oct->io_qmask.oq & BIT_ULL(q_no)))
175 continue;
176 reschedule |= octeon_droq_process_packets(oct, oct->droq[q_no],
177 MAX_PACKET_BUDGET);
178 lio_enable_irq(oct->droq[q_no], NULL);
179
180 if (OCTEON_CN23XX_PF(oct) && oct->msix_on) {
181 /* set time and cnt interrupt thresholds for this DROQ
182 * for NAPI
183 */
184 int adjusted_q_no = q_no + oct->sriov_info.pf_srn;
185
186 octeon_write_csr64(
187 oct, CN23XX_SLI_OQ_PKT_INT_LEVELS(adjusted_q_no),
188 0x5700000040ULL);
189 octeon_write_csr64(
190 oct, CN23XX_SLI_OQ_PKTS_SENT(adjusted_q_no), 0);
191 }
192 }
193
194 if (reschedule)
195 tasklet_schedule(&oct_priv->droq_tasklet);
196 }
197
198 static int lio_wait_for_oq_pkts(struct octeon_device *oct)
199 {
200 struct octeon_device_priv *oct_priv =
201 (struct octeon_device_priv *)oct->priv;
202 int retry = 100, pkt_cnt = 0, pending_pkts = 0;
203 int i;
204
205 do {
206 pending_pkts = 0;
207
208 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
209 if (!(oct->io_qmask.oq & BIT_ULL(i)))
210 continue;
211 pkt_cnt += octeon_droq_check_hw_for_pkts(oct->droq[i]);
212 }
213 if (pkt_cnt > 0) {
214 pending_pkts += pkt_cnt;
215 tasklet_schedule(&oct_priv->droq_tasklet);
216 }
217 pkt_cnt = 0;
218 schedule_timeout_uninterruptible(1);
219
220 } while (retry-- && pending_pkts);
221
222 return pkt_cnt;
223 }
224
225 /**
226 * \brief Forces all IO queues off on a given device
227 * @param oct Pointer to Octeon device
228 */
229 static void force_io_queues_off(struct octeon_device *oct)
230 {
231 if ((oct->chip_id == OCTEON_CN66XX) ||
232 (oct->chip_id == OCTEON_CN68XX)) {
233 /* Reset the Enable bits for Input Queues. */
234 octeon_write_csr(oct, CN6XXX_SLI_PKT_INSTR_ENB, 0);
235
236 /* Reset the Enable bits for Output Queues. */
237 octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_ENB, 0);
238 }
239 }
240
241 /**
242 * \brief Cause device to go quiet so it can be safely removed/reset/etc
243 * @param oct Pointer to Octeon device
244 */
245 static inline void pcierror_quiesce_device(struct octeon_device *oct)
246 {
247 int i;
248
249 /* Disable the input and output queues now. No more packets will
250 * arrive from Octeon, but we should wait for all packet processing
251 * to finish.
252 */
253 force_io_queues_off(oct);
254
255 /* To allow for in-flight requests */
256 schedule_timeout_uninterruptible(WAIT_INFLIGHT_REQUEST);
257
258 if (wait_for_pending_requests(oct))
259 dev_err(&oct->pci_dev->dev, "There were pending requests\n");
260
261 /* Force all requests waiting to be fetched by OCTEON to complete. */
262 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
263 struct octeon_instr_queue *iq;
264
265 if (!(oct->io_qmask.iq & BIT_ULL(i)))
266 continue;
267 iq = oct->instr_queue[i];
268
269 if (atomic_read(&iq->instr_pending)) {
270 spin_lock_bh(&iq->lock);
271 iq->fill_cnt = 0;
272 iq->octeon_read_index = iq->host_write_index;
273 iq->stats.instr_processed +=
274 atomic_read(&iq->instr_pending);
275 lio_process_iq_request_list(oct, iq, 0);
276 spin_unlock_bh(&iq->lock);
277 }
278 }
279
280 /* Force all pending ordered list requests to time out. */
281 lio_process_ordered_list(oct, 1);
282
283 /* We do not need to wait for output queue packets to be processed. */
284 }
285
286 /**
287 * \brief Cleanup PCI AER uncorrectable error status
288 * @param dev Pointer to PCI device
289 */
290 static void cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
291 {
292 int pos = 0x100;
293 u32 status, mask;
294
295 pr_info("%s :\n", __func__);
296
297 pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
298 pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask);
299 if (dev->error_state == pci_channel_io_normal)
300 status &= ~mask; /* Clear corresponding nonfatal bits */
301 else
302 status &= mask; /* Clear corresponding fatal bits */
303 pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
304 }
305
306 /**
307 * \brief Stop all PCI IO to a given device
308 * @param dev Pointer to Octeon device
309 */
310 static void stop_pci_io(struct octeon_device *oct)
311 {
312 /* No more instructions will be forwarded. */
313 atomic_set(&oct->status, OCT_DEV_IN_RESET);
314
315 pci_disable_device(oct->pci_dev);
316
317 /* Disable interrupts */
318 oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
319
320 pcierror_quiesce_device(oct);
321
322 /* Release the interrupt line */
323 free_irq(oct->pci_dev->irq, oct);
324
325 if (oct->flags & LIO_FLAG_MSI_ENABLED)
326 pci_disable_msi(oct->pci_dev);
327
328 dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n",
329 lio_get_state_string(&oct->status));
330
331 /* making it a common function for all OCTEON models */
332 cleanup_aer_uncorrect_error_status(oct->pci_dev);
333 }
334
335 /**
336 * \brief called when PCI error is detected
337 * @param pdev Pointer to PCI device
338 * @param state The current pci connection state
339 *
340 * This function is called after a PCI bus error affecting
341 * this device has been detected.
342 */
343 static pci_ers_result_t liquidio_pcie_error_detected(struct pci_dev *pdev,
344 pci_channel_state_t state)
345 {
346 struct octeon_device *oct = pci_get_drvdata(pdev);
347
348 /* Non-correctable Non-fatal errors */
349 if (state == pci_channel_io_normal) {
350 dev_err(&oct->pci_dev->dev, "Non-correctable non-fatal error reported:\n");
351 cleanup_aer_uncorrect_error_status(oct->pci_dev);
352 return PCI_ERS_RESULT_CAN_RECOVER;
353 }
354
355 /* Non-correctable Fatal errors */
356 dev_err(&oct->pci_dev->dev, "Non-correctable FATAL reported by PCI AER driver\n");
357 stop_pci_io(oct);
358
359 /* Always return a DISCONNECT. There is no support for recovery but only
360 * for a clean shutdown.
361 */
362 return PCI_ERS_RESULT_DISCONNECT;
363 }
364
365 /**
366 * \brief mmio handler
367 * @param pdev Pointer to PCI device
368 */
369 static pci_ers_result_t liquidio_pcie_mmio_enabled(
370 struct pci_dev *pdev __attribute__((unused)))
371 {
372 /* We should never hit this since we never ask for a reset for a Fatal
373 * Error. We always return DISCONNECT in io_error above.
374 * But play safe and return RECOVERED for now.
375 */
376 return PCI_ERS_RESULT_RECOVERED;
377 }
378
379 /**
380 * \brief called after the pci bus has been reset.
381 * @param pdev Pointer to PCI device
382 *
383 * Restart the card from scratch, as if from a cold-boot. Implementation
384 * resembles the first-half of the octeon_resume routine.
385 */
386 static pci_ers_result_t liquidio_pcie_slot_reset(
387 struct pci_dev *pdev __attribute__((unused)))
388 {
389 /* We should never hit this since we never ask for a reset for a Fatal
390 * Error. We always return DISCONNECT in io_error above.
391 * But play safe and return RECOVERED for now.
392 */
393 return PCI_ERS_RESULT_RECOVERED;
394 }
395
396 /**
397 * \brief called when traffic can start flowing again.
398 * @param pdev Pointer to PCI device
399 *
400 * This callback is called when the error recovery driver tells us that
401 * its OK to resume normal operation. Implementation resembles the
402 * second-half of the octeon_resume routine.
403 */
404 static void liquidio_pcie_resume(struct pci_dev *pdev __attribute__((unused)))
405 {
406 /* Nothing to be done here. */
407 }
408
409 #ifdef CONFIG_PM
410 /**
411 * \brief called when suspending
412 * @param pdev Pointer to PCI device
413 * @param state state to suspend to
414 */
415 static int liquidio_suspend(struct pci_dev *pdev __attribute__((unused)),
416 pm_message_t state __attribute__((unused)))
417 {
418 return 0;
419 }
420
421 /**
422 * \brief called when resuming
423 * @param pdev Pointer to PCI device
424 */
425 static int liquidio_resume(struct pci_dev *pdev __attribute__((unused)))
426 {
427 return 0;
428 }
429 #endif
430
431 /* For PCI-E Advanced Error Recovery (AER) Interface */
432 static const struct pci_error_handlers liquidio_err_handler = {
433 .error_detected = liquidio_pcie_error_detected,
434 .mmio_enabled = liquidio_pcie_mmio_enabled,
435 .slot_reset = liquidio_pcie_slot_reset,
436 .resume = liquidio_pcie_resume,
437 };
438
439 static const struct pci_device_id liquidio_pci_tbl[] = {
440 { /* 68xx */
441 PCI_VENDOR_ID_CAVIUM, 0x91, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0
442 },
443 { /* 66xx */
444 PCI_VENDOR_ID_CAVIUM, 0x92, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0
445 },
446 { /* 23xx pf */
447 PCI_VENDOR_ID_CAVIUM, 0x9702, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0
448 },
449 {
450 0, 0, 0, 0, 0, 0, 0
451 }
452 };
453 MODULE_DEVICE_TABLE(pci, liquidio_pci_tbl);
454
455 static struct pci_driver liquidio_pci_driver = {
456 .name = "LiquidIO",
457 .id_table = liquidio_pci_tbl,
458 .probe = liquidio_probe,
459 .remove = liquidio_remove,
460 .err_handler = &liquidio_err_handler, /* For AER */
461
462 #ifdef CONFIG_PM
463 .suspend = liquidio_suspend,
464 .resume = liquidio_resume,
465 #endif
466 #ifdef CONFIG_PCI_IOV
467 .sriov_configure = liquidio_enable_sriov,
468 #endif
469 };
470
471 /**
472 * \brief register PCI driver
473 */
474 static int liquidio_init_pci(void)
475 {
476 return pci_register_driver(&liquidio_pci_driver);
477 }
478
479 /**
480 * \brief unregister PCI driver
481 */
482 static void liquidio_deinit_pci(void)
483 {
484 pci_unregister_driver(&liquidio_pci_driver);
485 }
486
487 /**
488 * \brief Check Tx queue status, and take appropriate action
489 * @param lio per-network private data
490 * @returns 0 if full, number of queues woken up otherwise
491 */
492 static inline int check_txq_status(struct lio *lio)
493 {
494 int numqs = lio->netdev->real_num_tx_queues;
495 int ret_val = 0;
496 int q, iq;
497
498 /* check each sub-queue state */
499 for (q = 0; q < numqs; q++) {
500 iq = lio->linfo.txpciq[q %
501 lio->oct_dev->num_iqs].s.q_no;
502 if (octnet_iq_is_full(lio->oct_dev, iq))
503 continue;
504 if (__netif_subqueue_stopped(lio->netdev, q)) {
505 netif_wake_subqueue(lio->netdev, q);
506 INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, iq,
507 tx_restart, 1);
508 ret_val++;
509 }
510 }
511
512 return ret_val;
513 }
514
515 /**
516 * \brief Print link information
517 * @param netdev network device
518 */
519 static void print_link_info(struct net_device *netdev)
520 {
521 struct lio *lio = GET_LIO(netdev);
522
523 if (!ifstate_check(lio, LIO_IFSTATE_RESETTING) &&
524 ifstate_check(lio, LIO_IFSTATE_REGISTERED)) {
525 struct oct_link_info *linfo = &lio->linfo;
526
527 if (linfo->link.s.link_up) {
528 netif_info(lio, link, lio->netdev, "%d Mbps %s Duplex UP\n",
529 linfo->link.s.speed,
530 (linfo->link.s.duplex) ? "Full" : "Half");
531 } else {
532 netif_info(lio, link, lio->netdev, "Link Down\n");
533 }
534 }
535 }
536
537 /**
538 * \brief Routine to notify MTU change
539 * @param work work_struct data structure
540 */
541 static void octnet_link_status_change(struct work_struct *work)
542 {
543 struct cavium_wk *wk = (struct cavium_wk *)work;
544 struct lio *lio = (struct lio *)wk->ctxptr;
545
546 /* lio->linfo.link.s.mtu always contains max MTU of the lio interface.
547 * this API is invoked only when new max-MTU of the interface is
548 * less than current MTU.
549 */
550 rtnl_lock();
551 dev_set_mtu(lio->netdev, lio->linfo.link.s.mtu);
552 rtnl_unlock();
553 }
554
555 /**
556 * \brief Sets up the mtu status change work
557 * @param netdev network device
558 */
559 static inline int setup_link_status_change_wq(struct net_device *netdev)
560 {
561 struct lio *lio = GET_LIO(netdev);
562 struct octeon_device *oct = lio->oct_dev;
563
564 lio->link_status_wq.wq = alloc_workqueue("link-status",
565 WQ_MEM_RECLAIM, 0);
566 if (!lio->link_status_wq.wq) {
567 dev_err(&oct->pci_dev->dev, "unable to create cavium link status wq\n");
568 return -1;
569 }
570 INIT_DELAYED_WORK(&lio->link_status_wq.wk.work,
571 octnet_link_status_change);
572 lio->link_status_wq.wk.ctxptr = lio;
573
574 return 0;
575 }
576
577 static inline void cleanup_link_status_change_wq(struct net_device *netdev)
578 {
579 struct lio *lio = GET_LIO(netdev);
580
581 if (lio->link_status_wq.wq) {
582 cancel_delayed_work_sync(&lio->link_status_wq.wk.work);
583 destroy_workqueue(lio->link_status_wq.wq);
584 }
585 }
586
587 /**
588 * \brief Update link status
589 * @param netdev network device
590 * @param ls link status structure
591 *
592 * Called on receipt of a link status response from the core application to
593 * update each interface's link status.
594 */
595 static inline void update_link_status(struct net_device *netdev,
596 union oct_link_status *ls)
597 {
598 struct lio *lio = GET_LIO(netdev);
599 int changed = (lio->linfo.link.u64 != ls->u64);
600 int current_max_mtu = lio->linfo.link.s.mtu;
601 struct octeon_device *oct = lio->oct_dev;
602
603 dev_dbg(&oct->pci_dev->dev, "%s: lio->linfo.link.u64=%llx, ls->u64=%llx\n",
604 __func__, lio->linfo.link.u64, ls->u64);
605 lio->linfo.link.u64 = ls->u64;
606
607 if ((lio->intf_open) && (changed)) {
608 print_link_info(netdev);
609 lio->link_changes++;
610
611 if (lio->linfo.link.s.link_up) {
612 dev_dbg(&oct->pci_dev->dev, "%s: link_up", __func__);
613 netif_carrier_on(netdev);
614 wake_txqs(netdev);
615 } else {
616 dev_dbg(&oct->pci_dev->dev, "%s: link_off", __func__);
617 netif_carrier_off(netdev);
618 stop_txqs(netdev);
619 }
620 if (lio->linfo.link.s.mtu != current_max_mtu) {
621 netif_info(lio, probe, lio->netdev, "Max MTU changed from %d to %d\n",
622 current_max_mtu, lio->linfo.link.s.mtu);
623 netdev->max_mtu = lio->linfo.link.s.mtu;
624 }
625 if (lio->linfo.link.s.mtu < netdev->mtu) {
626 dev_warn(&oct->pci_dev->dev,
627 "Current MTU is higher than new max MTU; Reducing the current mtu from %d to %d\n",
628 netdev->mtu, lio->linfo.link.s.mtu);
629 queue_delayed_work(lio->link_status_wq.wq,
630 &lio->link_status_wq.wk.work, 0);
631 }
632 }
633 }
634
635 /**
636 * lio_sync_octeon_time - send latest localtime to octeon firmware so that
637 * firmware will correct it's time, in case there is a time skew
638 *
639 * @work: work scheduled to send time update to octeon firmware
640 **/
641 static void lio_sync_octeon_time(struct work_struct *work)
642 {
643 struct cavium_wk *wk = (struct cavium_wk *)work;
644 struct lio *lio = (struct lio *)wk->ctxptr;
645 struct octeon_device *oct = lio->oct_dev;
646 struct octeon_soft_command *sc;
647 struct timespec64 ts;
648 struct lio_time *lt;
649 int ret;
650
651 sc = octeon_alloc_soft_command(oct, sizeof(struct lio_time), 16, 0);
652 if (!sc) {
653 dev_err(&oct->pci_dev->dev,
654 "Failed to sync time to octeon: soft command allocation failed\n");
655 return;
656 }
657
658 lt = (struct lio_time *)sc->virtdptr;
659
660 /* Get time of the day */
661 ktime_get_real_ts64(&ts);
662 lt->sec = ts.tv_sec;
663 lt->nsec = ts.tv_nsec;
664 octeon_swap_8B_data((u64 *)lt, (sizeof(struct lio_time)) / 8);
665
666 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
667 octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
668 OPCODE_NIC_SYNC_OCTEON_TIME, 0, 0, 0);
669
670 init_completion(&sc->complete);
671 sc->sc_status = OCTEON_REQUEST_PENDING;
672
673 ret = octeon_send_soft_command(oct, sc);
674 if (ret == IQ_SEND_FAILED) {
675 dev_err(&oct->pci_dev->dev,
676 "Failed to sync time to octeon: failed to send soft command\n");
677 octeon_free_soft_command(oct, sc);
678 } else {
679 WRITE_ONCE(sc->caller_is_done, true);
680 }
681
682 queue_delayed_work(lio->sync_octeon_time_wq.wq,
683 &lio->sync_octeon_time_wq.wk.work,
684 msecs_to_jiffies(LIO_SYNC_OCTEON_TIME_INTERVAL_MS));
685 }
686
687 /**
688 * setup_sync_octeon_time_wq - Sets up the work to periodically update
689 * local time to octeon firmware
690 *
691 * @netdev - network device which should send time update to firmware
692 **/
693 static inline int setup_sync_octeon_time_wq(struct net_device *netdev)
694 {
695 struct lio *lio = GET_LIO(netdev);
696 struct octeon_device *oct = lio->oct_dev;
697
698 lio->sync_octeon_time_wq.wq =
699 alloc_workqueue("update-octeon-time", WQ_MEM_RECLAIM, 0);
700 if (!lio->sync_octeon_time_wq.wq) {
701 dev_err(&oct->pci_dev->dev, "Unable to create wq to update octeon time\n");
702 return -1;
703 }
704 INIT_DELAYED_WORK(&lio->sync_octeon_time_wq.wk.work,
705 lio_sync_octeon_time);
706 lio->sync_octeon_time_wq.wk.ctxptr = lio;
707 queue_delayed_work(lio->sync_octeon_time_wq.wq,
708 &lio->sync_octeon_time_wq.wk.work,
709 msecs_to_jiffies(LIO_SYNC_OCTEON_TIME_INTERVAL_MS));
710
711 return 0;
712 }
713
714 /**
715 * cleanup_sync_octeon_time_wq - stop scheduling and destroy the work created
716 * to periodically update local time to octeon firmware
717 *
718 * @netdev - network device which should send time update to firmware
719 **/
720 static inline void cleanup_sync_octeon_time_wq(struct net_device *netdev)
721 {
722 struct lio *lio = GET_LIO(netdev);
723 struct cavium_wq *time_wq = &lio->sync_octeon_time_wq;
724
725 if (time_wq->wq) {
726 cancel_delayed_work_sync(&time_wq->wk.work);
727 destroy_workqueue(time_wq->wq);
728 }
729 }
730
731 static struct octeon_device *get_other_octeon_device(struct octeon_device *oct)
732 {
733 struct octeon_device *other_oct;
734
735 other_oct = lio_get_device(oct->octeon_id + 1);
736
737 if (other_oct && other_oct->pci_dev) {
738 int oct_busnum, other_oct_busnum;
739
740 oct_busnum = oct->pci_dev->bus->number;
741 other_oct_busnum = other_oct->pci_dev->bus->number;
742
743 if (oct_busnum == other_oct_busnum) {
744 int oct_slot, other_oct_slot;
745
746 oct_slot = PCI_SLOT(oct->pci_dev->devfn);
747 other_oct_slot = PCI_SLOT(other_oct->pci_dev->devfn);
748
749 if (oct_slot == other_oct_slot)
750 return other_oct;
751 }
752 }
753
754 return NULL;
755 }
756
757 static void disable_all_vf_links(struct octeon_device *oct)
758 {
759 struct net_device *netdev;
760 int max_vfs, vf, i;
761
762 if (!oct)
763 return;
764
765 max_vfs = oct->sriov_info.max_vfs;
766
767 for (i = 0; i < oct->ifcount; i++) {
768 netdev = oct->props[i].netdev;
769 if (!netdev)
770 continue;
771
772 for (vf = 0; vf < max_vfs; vf++)
773 liquidio_set_vf_link_state(netdev, vf,
774 IFLA_VF_LINK_STATE_DISABLE);
775 }
776 }
777
778 static int liquidio_watchdog(void *param)
779 {
780 bool err_msg_was_printed[LIO_MAX_CORES];
781 u16 mask_of_crashed_or_stuck_cores = 0;
782 bool all_vf_links_are_disabled = false;
783 struct octeon_device *oct = param;
784 struct octeon_device *other_oct;
785 #ifdef CONFIG_MODULE_UNLOAD
786 long refcount, vfs_referencing_pf;
787 u64 vfs_mask1, vfs_mask2;
788 #endif
789 int core;
790
791 memset(err_msg_was_printed, 0, sizeof(err_msg_was_printed));
792
793 while (!kthread_should_stop()) {
794 /* sleep for a couple of seconds so that we don't hog the CPU */
795 set_current_state(TASK_INTERRUPTIBLE);
796 schedule_timeout(msecs_to_jiffies(2000));
797
798 mask_of_crashed_or_stuck_cores =
799 (u16)octeon_read_csr64(oct, CN23XX_SLI_SCRATCH2);
800
801 if (!mask_of_crashed_or_stuck_cores)
802 continue;
803
804 WRITE_ONCE(oct->cores_crashed, true);
805 other_oct = get_other_octeon_device(oct);
806 if (other_oct)
807 WRITE_ONCE(other_oct->cores_crashed, true);
808
809 for (core = 0; core < LIO_MAX_CORES; core++) {
810 bool core_crashed_or_got_stuck;
811
812 core_crashed_or_got_stuck =
813 (mask_of_crashed_or_stuck_cores
814 >> core) & 1;
815
816 if (core_crashed_or_got_stuck &&
817 !err_msg_was_printed[core]) {
818 dev_err(&oct->pci_dev->dev,
819 "ERROR: Octeon core %d crashed or got stuck! See oct-fwdump for details.\n",
820 core);
821 err_msg_was_printed[core] = true;
822 }
823 }
824
825 if (all_vf_links_are_disabled)
826 continue;
827
828 disable_all_vf_links(oct);
829 disable_all_vf_links(other_oct);
830 all_vf_links_are_disabled = true;
831
832 #ifdef CONFIG_MODULE_UNLOAD
833 vfs_mask1 = READ_ONCE(oct->sriov_info.vf_drv_loaded_mask);
834 vfs_mask2 = READ_ONCE(other_oct->sriov_info.vf_drv_loaded_mask);
835
836 vfs_referencing_pf = hweight64(vfs_mask1);
837 vfs_referencing_pf += hweight64(vfs_mask2);
838
839 refcount = module_refcount(THIS_MODULE);
840 if (refcount >= vfs_referencing_pf) {
841 while (vfs_referencing_pf) {
842 module_put(THIS_MODULE);
843 vfs_referencing_pf--;
844 }
845 }
846 #endif
847 }
848
849 return 0;
850 }
851
852 /**
853 * \brief PCI probe handler
854 * @param pdev PCI device structure
855 * @param ent unused
856 */
857 static int
858 liquidio_probe(struct pci_dev *pdev,
859 const struct pci_device_id *ent __attribute__((unused)))
860 {
861 struct octeon_device *oct_dev = NULL;
862 struct handshake *hs;
863
864 oct_dev = octeon_allocate_device(pdev->device,
865 sizeof(struct octeon_device_priv));
866 if (!oct_dev) {
867 dev_err(&pdev->dev, "Unable to allocate device\n");
868 return -ENOMEM;
869 }
870
871 if (pdev->device == OCTEON_CN23XX_PF_VID)
872 oct_dev->msix_on = LIO_FLAG_MSIX_ENABLED;
873
874 /* Enable PTP for 6XXX Device */
875 if (((pdev->device == OCTEON_CN66XX) ||
876 (pdev->device == OCTEON_CN68XX)))
877 oct_dev->ptp_enable = true;
878 else
879 oct_dev->ptp_enable = false;
880
881 dev_info(&pdev->dev, "Initializing device %x:%x.\n",
882 (u32)pdev->vendor, (u32)pdev->device);
883
884 /* Assign octeon_device for this device to the private data area. */
885 pci_set_drvdata(pdev, oct_dev);
886
887 /* set linux specific device pointer */
888 oct_dev->pci_dev = (void *)pdev;
889
890 oct_dev->subsystem_id = pdev->subsystem_vendor |
891 (pdev->subsystem_device << 16);
892
893 hs = &handshake[oct_dev->octeon_id];
894 init_completion(&hs->init);
895 init_completion(&hs->started);
896 hs->pci_dev = pdev;
897
898 if (oct_dev->octeon_id == 0)
899 /* first LiquidIO NIC is detected */
900 complete(&first_stage);
901
902 if (octeon_device_init(oct_dev)) {
903 complete(&hs->init);
904 liquidio_remove(pdev);
905 return -ENOMEM;
906 }
907
908 if (OCTEON_CN23XX_PF(oct_dev)) {
909 u8 bus, device, function;
910
911 if (atomic_read(oct_dev->adapter_refcount) == 1) {
912 /* Each NIC gets one watchdog kernel thread. The first
913 * PF (of each NIC) that gets pci_driver->probe()'d
914 * creates that thread.
915 */
916 bus = pdev->bus->number;
917 device = PCI_SLOT(pdev->devfn);
918 function = PCI_FUNC(pdev->devfn);
919 oct_dev->watchdog_task = kthread_create(
920 liquidio_watchdog, oct_dev,
921 "liowd/%02hhx:%02hhx.%hhx", bus, device, function);
922 if (!IS_ERR(oct_dev->watchdog_task)) {
923 wake_up_process(oct_dev->watchdog_task);
924 } else {
925 oct_dev->watchdog_task = NULL;
926 dev_err(&oct_dev->pci_dev->dev,
927 "failed to create kernel_thread\n");
928 liquidio_remove(pdev);
929 return -1;
930 }
931 }
932 }
933
934 oct_dev->rx_pause = 1;
935 oct_dev->tx_pause = 1;
936
937 dev_dbg(&oct_dev->pci_dev->dev, "Device is ready\n");
938
939 return 0;
940 }
941
942 static bool fw_type_is_auto(void)
943 {
944 return strncmp(fw_type, LIO_FW_NAME_TYPE_AUTO,
945 sizeof(LIO_FW_NAME_TYPE_AUTO)) == 0;
946 }
947
948 /**
949 * \brief PCI FLR for each Octeon device.
950 * @param oct octeon device
951 */
952 static void octeon_pci_flr(struct octeon_device *oct)
953 {
954 int rc;
955
956 pci_save_state(oct->pci_dev);
957
958 pci_cfg_access_lock(oct->pci_dev);
959
960 /* Quiesce the device completely */
961 pci_write_config_word(oct->pci_dev, PCI_COMMAND,
962 PCI_COMMAND_INTX_DISABLE);
963
964 rc = __pci_reset_function_locked(oct->pci_dev);
965
966 if (rc != 0)
967 dev_err(&oct->pci_dev->dev, "Error %d resetting PCI function %d\n",
968 rc, oct->pf_num);
969
970 pci_cfg_access_unlock(oct->pci_dev);
971
972 pci_restore_state(oct->pci_dev);
973 }
974
975 /**
976 *\brief Destroy resources associated with octeon device
977 * @param pdev PCI device structure
978 * @param ent unused
979 */
980 static void octeon_destroy_resources(struct octeon_device *oct)
981 {
982 int i, refcount;
983 struct msix_entry *msix_entries;
984 struct octeon_device_priv *oct_priv =
985 (struct octeon_device_priv *)oct->priv;
986
987 struct handshake *hs;
988
989 switch (atomic_read(&oct->status)) {
990 case OCT_DEV_RUNNING:
991 case OCT_DEV_CORE_OK:
992
993 /* No more instructions will be forwarded. */
994 atomic_set(&oct->status, OCT_DEV_IN_RESET);
995
996 oct->app_mode = CVM_DRV_INVALID_APP;
997 dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n",
998 lio_get_state_string(&oct->status));
999
1000 schedule_timeout_uninterruptible(HZ / 10);
1001
1002 /* fallthrough */
1003 case OCT_DEV_HOST_OK:
1004
1005 /* fallthrough */
1006 case OCT_DEV_CONSOLE_INIT_DONE:
1007 /* Remove any consoles */
1008 octeon_remove_consoles(oct);
1009
1010 /* fallthrough */
1011 case OCT_DEV_IO_QUEUES_DONE:
1012 if (lio_wait_for_instr_fetch(oct))
1013 dev_err(&oct->pci_dev->dev, "IQ had pending instructions\n");
1014
1015 if (wait_for_pending_requests(oct))
1016 dev_err(&oct->pci_dev->dev, "There were pending requests\n");
1017
1018 /* Disable the input and output queues now. No more packets will
1019 * arrive from Octeon, but we should wait for all packet
1020 * processing to finish.
1021 */
1022 oct->fn_list.disable_io_queues(oct);
1023
1024 if (lio_wait_for_oq_pkts(oct))
1025 dev_err(&oct->pci_dev->dev, "OQ had pending packets\n");
1026
1027 /* Force all requests waiting to be fetched by OCTEON to
1028 * complete.
1029 */
1030 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
1031 struct octeon_instr_queue *iq;
1032
1033 if (!(oct->io_qmask.iq & BIT_ULL(i)))
1034 continue;
1035 iq = oct->instr_queue[i];
1036
1037 if (atomic_read(&iq->instr_pending)) {
1038 spin_lock_bh(&iq->lock);
1039 iq->fill_cnt = 0;
1040 iq->octeon_read_index = iq->host_write_index;
1041 iq->stats.instr_processed +=
1042 atomic_read(&iq->instr_pending);
1043 lio_process_iq_request_list(oct, iq, 0);
1044 spin_unlock_bh(&iq->lock);
1045 }
1046 }
1047
1048 lio_process_ordered_list(oct, 1);
1049 octeon_free_sc_done_list(oct);
1050 octeon_free_sc_zombie_list(oct);
1051
1052 /* fallthrough */
1053 case OCT_DEV_INTR_SET_DONE:
1054 /* Disable interrupts */
1055 oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
1056
1057 if (oct->msix_on) {
1058 msix_entries = (struct msix_entry *)oct->msix_entries;
1059 for (i = 0; i < oct->num_msix_irqs - 1; i++) {
1060 if (oct->ioq_vector[i].vector) {
1061 /* clear the affinity_cpumask */
1062 irq_set_affinity_hint(
1063 msix_entries[i].vector,
1064 NULL);
1065 free_irq(msix_entries[i].vector,
1066 &oct->ioq_vector[i]);
1067 oct->ioq_vector[i].vector = 0;
1068 }
1069 }
1070 /* non-iov vector's argument is oct struct */
1071 free_irq(msix_entries[i].vector, oct);
1072
1073 pci_disable_msix(oct->pci_dev);
1074 kfree(oct->msix_entries);
1075 oct->msix_entries = NULL;
1076 } else {
1077 /* Release the interrupt line */
1078 free_irq(oct->pci_dev->irq, oct);
1079
1080 if (oct->flags & LIO_FLAG_MSI_ENABLED)
1081 pci_disable_msi(oct->pci_dev);
1082 }
1083
1084 kfree(oct->irq_name_storage);
1085 oct->irq_name_storage = NULL;
1086
1087 /* fallthrough */
1088 case OCT_DEV_MSIX_ALLOC_VECTOR_DONE:
1089 if (OCTEON_CN23XX_PF(oct))
1090 octeon_free_ioq_vector(oct);
1091
1092 /* fallthrough */
1093 case OCT_DEV_MBOX_SETUP_DONE:
1094 if (OCTEON_CN23XX_PF(oct))
1095 oct->fn_list.free_mbox(oct);
1096
1097 /* fallthrough */
1098 case OCT_DEV_IN_RESET:
1099 case OCT_DEV_DROQ_INIT_DONE:
1100 /* Wait for any pending operations */
1101 mdelay(100);
1102 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
1103 if (!(oct->io_qmask.oq & BIT_ULL(i)))
1104 continue;
1105 octeon_delete_droq(oct, i);
1106 }
1107
1108 /* Force any pending handshakes to complete */
1109 for (i = 0; i < MAX_OCTEON_DEVICES; i++) {
1110 hs = &handshake[i];
1111
1112 if (hs->pci_dev) {
1113 handshake[oct->octeon_id].init_ok = 0;
1114 complete(&handshake[oct->octeon_id].init);
1115 handshake[oct->octeon_id].started_ok = 0;
1116 complete(&handshake[oct->octeon_id].started);
1117 }
1118 }
1119
1120 /* fallthrough */
1121 case OCT_DEV_RESP_LIST_INIT_DONE:
1122 octeon_delete_response_list(oct);
1123
1124 /* fallthrough */
1125 case OCT_DEV_INSTR_QUEUE_INIT_DONE:
1126 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
1127 if (!(oct->io_qmask.iq & BIT_ULL(i)))
1128 continue;
1129 octeon_delete_instr_queue(oct, i);
1130 }
1131 #ifdef CONFIG_PCI_IOV
1132 if (oct->sriov_info.sriov_enabled)
1133 pci_disable_sriov(oct->pci_dev);
1134 #endif
1135 /* fallthrough */
1136 case OCT_DEV_SC_BUFF_POOL_INIT_DONE:
1137 octeon_free_sc_buffer_pool(oct);
1138
1139 /* fallthrough */
1140 case OCT_DEV_DISPATCH_INIT_DONE:
1141 octeon_delete_dispatch_list(oct);
1142 cancel_delayed_work_sync(&oct->nic_poll_work.work);
1143
1144 /* fallthrough */
1145 case OCT_DEV_PCI_MAP_DONE:
1146 refcount = octeon_deregister_device(oct);
1147
1148 /* Soft reset the octeon device before exiting.
1149 * However, if fw was loaded from card (i.e. autoboot),
1150 * perform an FLR instead.
1151 * Implementation note: only soft-reset the device
1152 * if it is a CN6XXX OR the LAST CN23XX device.
1153 */
1154 if (atomic_read(oct->adapter_fw_state) == FW_IS_PRELOADED)
1155 octeon_pci_flr(oct);
1156 else if (OCTEON_CN6XXX(oct) || !refcount)
1157 oct->fn_list.soft_reset(oct);
1158
1159 octeon_unmap_pci_barx(oct, 0);
1160 octeon_unmap_pci_barx(oct, 1);
1161
1162 /* fallthrough */
1163 case OCT_DEV_PCI_ENABLE_DONE:
1164 pci_clear_master(oct->pci_dev);
1165 /* Disable the device, releasing the PCI INT */
1166 pci_disable_device(oct->pci_dev);
1167
1168 /* fallthrough */
1169 case OCT_DEV_BEGIN_STATE:
1170 /* Nothing to be done here either */
1171 break;
1172 } /* end switch (oct->status) */
1173
1174 tasklet_kill(&oct_priv->droq_tasklet);
1175 }
1176
1177 /**
1178 * \brief Send Rx control command
1179 * @param lio per-network private data
1180 * @param start_stop whether to start or stop
1181 */
1182 static void send_rx_ctrl_cmd(struct lio *lio, int start_stop)
1183 {
1184 struct octeon_soft_command *sc;
1185 union octnet_cmd *ncmd;
1186 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
1187 int retval;
1188
1189 if (oct->props[lio->ifidx].rx_on == start_stop)
1190 return;
1191
1192 sc = (struct octeon_soft_command *)
1193 octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE,
1194 16, 0);
1195 if (!sc) {
1196 netif_info(lio, rx_err, lio->netdev,
1197 "Failed to allocate octeon_soft_command\n");
1198 return;
1199 }
1200
1201 ncmd = (union octnet_cmd *)sc->virtdptr;
1202
1203 ncmd->u64 = 0;
1204 ncmd->s.cmd = OCTNET_CMD_RX_CTL;
1205 ncmd->s.param1 = start_stop;
1206
1207 octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3));
1208
1209 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
1210
1211 octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
1212 OPCODE_NIC_CMD, 0, 0, 0);
1213
1214 init_completion(&sc->complete);
1215 sc->sc_status = OCTEON_REQUEST_PENDING;
1216
1217 retval = octeon_send_soft_command(oct, sc);
1218 if (retval == IQ_SEND_FAILED) {
1219 netif_info(lio, rx_err, lio->netdev, "Failed to send RX Control message\n");
1220 octeon_free_soft_command(oct, sc);
1221 return;
1222 } else {
1223 /* Sleep on a wait queue till the cond flag indicates that the
1224 * response arrived or timed-out.
1225 */
1226 retval = wait_for_sc_completion_timeout(oct, sc, 0);
1227 if (retval)
1228 return;
1229
1230 oct->props[lio->ifidx].rx_on = start_stop;
1231 WRITE_ONCE(sc->caller_is_done, true);
1232 }
1233 }
1234
1235 /**
1236 * \brief Destroy NIC device interface
1237 * @param oct octeon device
1238 * @param ifidx which interface to destroy
1239 *
1240 * Cleanup associated with each interface for an Octeon device when NIC
1241 * module is being unloaded or if initialization fails during load.
1242 */
1243 static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx)
1244 {
1245 struct net_device *netdev = oct->props[ifidx].netdev;
1246 struct octeon_device_priv *oct_priv =
1247 (struct octeon_device_priv *)oct->priv;
1248 struct napi_struct *napi, *n;
1249 struct lio *lio;
1250
1251 if (!netdev) {
1252 dev_err(&oct->pci_dev->dev, "%s No netdevice ptr for index %d\n",
1253 __func__, ifidx);
1254 return;
1255 }
1256
1257 lio = GET_LIO(netdev);
1258
1259 dev_dbg(&oct->pci_dev->dev, "NIC device cleanup\n");
1260
1261 if (atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING)
1262 liquidio_stop(netdev);
1263
1264 if (oct->props[lio->ifidx].napi_enabled == 1) {
1265 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
1266 napi_disable(napi);
1267
1268 oct->props[lio->ifidx].napi_enabled = 0;
1269
1270 if (OCTEON_CN23XX_PF(oct))
1271 oct->droq[0]->ops.poll_mode = 0;
1272 }
1273
1274 /* Delete NAPI */
1275 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
1276 netif_napi_del(napi);
1277
1278 tasklet_enable(&oct_priv->droq_tasklet);
1279
1280 if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED)
1281 unregister_netdev(netdev);
1282
1283 cleanup_sync_octeon_time_wq(netdev);
1284 cleanup_link_status_change_wq(netdev);
1285
1286 cleanup_rx_oom_poll_fn(netdev);
1287
1288 lio_delete_glists(lio);
1289
1290 free_netdev(netdev);
1291
1292 oct->props[ifidx].gmxport = -1;
1293
1294 oct->props[ifidx].netdev = NULL;
1295 }
1296
1297 /**
1298 * \brief Stop complete NIC functionality
1299 * @param oct octeon device
1300 */
1301 static int liquidio_stop_nic_module(struct octeon_device *oct)
1302 {
1303 int i, j;
1304 struct lio *lio;
1305
1306 dev_dbg(&oct->pci_dev->dev, "Stopping network interfaces\n");
1307 if (!oct->ifcount) {
1308 dev_err(&oct->pci_dev->dev, "Init for Octeon was not completed\n");
1309 return 1;
1310 }
1311
1312 spin_lock_bh(&oct->cmd_resp_wqlock);
1313 oct->cmd_resp_state = OCT_DRV_OFFLINE;
1314 spin_unlock_bh(&oct->cmd_resp_wqlock);
1315
1316 lio_vf_rep_destroy(oct);
1317
1318 for (i = 0; i < oct->ifcount; i++) {
1319 lio = GET_LIO(oct->props[i].netdev);
1320 for (j = 0; j < oct->num_oqs; j++)
1321 octeon_unregister_droq_ops(oct,
1322 lio->linfo.rxpciq[j].s.q_no);
1323 }
1324
1325 for (i = 0; i < oct->ifcount; i++)
1326 liquidio_destroy_nic_device(oct, i);
1327
1328 if (oct->devlink) {
1329 devlink_unregister(oct->devlink);
1330 devlink_free(oct->devlink);
1331 oct->devlink = NULL;
1332 }
1333
1334 dev_dbg(&oct->pci_dev->dev, "Network interfaces stopped\n");
1335 return 0;
1336 }
1337
1338 /**
1339 * \brief Cleans up resources at unload time
1340 * @param pdev PCI device structure
1341 */
1342 static void liquidio_remove(struct pci_dev *pdev)
1343 {
1344 struct octeon_device *oct_dev = pci_get_drvdata(pdev);
1345
1346 dev_dbg(&oct_dev->pci_dev->dev, "Stopping device\n");
1347
1348 if (oct_dev->watchdog_task)
1349 kthread_stop(oct_dev->watchdog_task);
1350
1351 if (!oct_dev->octeon_id &&
1352 oct_dev->fw_info.app_cap_flags & LIQUIDIO_SWITCHDEV_CAP)
1353 lio_vf_rep_modexit();
1354
1355 if (oct_dev->app_mode && (oct_dev->app_mode == CVM_DRV_NIC_APP))
1356 liquidio_stop_nic_module(oct_dev);
1357
1358 /* Reset the octeon device and cleanup all memory allocated for
1359 * the octeon device by driver.
1360 */
1361 octeon_destroy_resources(oct_dev);
1362
1363 dev_info(&oct_dev->pci_dev->dev, "Device removed\n");
1364
1365 /* This octeon device has been removed. Update the global
1366 * data structure to reflect this. Free the device structure.
1367 */
1368 octeon_free_device_mem(oct_dev);
1369 }
1370
1371 /**
1372 * \brief Identify the Octeon device and to map the BAR address space
1373 * @param oct octeon device
1374 */
1375 static int octeon_chip_specific_setup(struct octeon_device *oct)
1376 {
1377 u32 dev_id, rev_id;
1378 int ret = 1;
1379 char *s;
1380
1381 pci_read_config_dword(oct->pci_dev, 0, &dev_id);
1382 pci_read_config_dword(oct->pci_dev, 8, &rev_id);
1383 oct->rev_id = rev_id & 0xff;
1384
1385 switch (dev_id) {
1386 case OCTEON_CN68XX_PCIID:
1387 oct->chip_id = OCTEON_CN68XX;
1388 ret = lio_setup_cn68xx_octeon_device(oct);
1389 s = "CN68XX";
1390 break;
1391
1392 case OCTEON_CN66XX_PCIID:
1393 oct->chip_id = OCTEON_CN66XX;
1394 ret = lio_setup_cn66xx_octeon_device(oct);
1395 s = "CN66XX";
1396 break;
1397
1398 case OCTEON_CN23XX_PCIID_PF:
1399 oct->chip_id = OCTEON_CN23XX_PF_VID;
1400 ret = setup_cn23xx_octeon_pf_device(oct);
1401 if (ret)
1402 break;
1403 #ifdef CONFIG_PCI_IOV
1404 if (!ret)
1405 pci_sriov_set_totalvfs(oct->pci_dev,
1406 oct->sriov_info.max_vfs);
1407 #endif
1408 s = "CN23XX";
1409 break;
1410
1411 default:
1412 s = "?";
1413 dev_err(&oct->pci_dev->dev, "Unknown device found (dev_id: %x)\n",
1414 dev_id);
1415 }
1416
1417 if (!ret)
1418 dev_info(&oct->pci_dev->dev, "%s PASS%d.%d %s Version: %s\n", s,
1419 OCTEON_MAJOR_REV(oct),
1420 OCTEON_MINOR_REV(oct),
1421 octeon_get_conf(oct)->card_name,
1422 LIQUIDIO_VERSION);
1423
1424 return ret;
1425 }
1426
1427 /**
1428 * \brief PCI initialization for each Octeon device.
1429 * @param oct octeon device
1430 */
1431 static int octeon_pci_os_setup(struct octeon_device *oct)
1432 {
1433 /* setup PCI stuff first */
1434 if (pci_enable_device(oct->pci_dev)) {
1435 dev_err(&oct->pci_dev->dev, "pci_enable_device failed\n");
1436 return 1;
1437 }
1438
1439 if (dma_set_mask_and_coherent(&oct->pci_dev->dev, DMA_BIT_MASK(64))) {
1440 dev_err(&oct->pci_dev->dev, "Unexpected DMA device capability\n");
1441 pci_disable_device(oct->pci_dev);
1442 return 1;
1443 }
1444
1445 /* Enable PCI DMA Master. */
1446 pci_set_master(oct->pci_dev);
1447
1448 return 0;
1449 }
1450
1451 /**
1452 * \brief Unmap and free network buffer
1453 * @param buf buffer
1454 */
1455 static void free_netbuf(void *buf)
1456 {
1457 struct sk_buff *skb;
1458 struct octnet_buf_free_info *finfo;
1459 struct lio *lio;
1460
1461 finfo = (struct octnet_buf_free_info *)buf;
1462 skb = finfo->skb;
1463 lio = finfo->lio;
1464
1465 dma_unmap_single(&lio->oct_dev->pci_dev->dev, finfo->dptr, skb->len,
1466 DMA_TO_DEVICE);
1467
1468 tx_buffer_free(skb);
1469 }
1470
1471 /**
1472 * \brief Unmap and free gather buffer
1473 * @param buf buffer
1474 */
1475 static void free_netsgbuf(void *buf)
1476 {
1477 struct octnet_buf_free_info *finfo;
1478 struct sk_buff *skb;
1479 struct lio *lio;
1480 struct octnic_gather *g;
1481 int i, frags, iq;
1482
1483 finfo = (struct octnet_buf_free_info *)buf;
1484 skb = finfo->skb;
1485 lio = finfo->lio;
1486 g = finfo->g;
1487 frags = skb_shinfo(skb)->nr_frags;
1488
1489 dma_unmap_single(&lio->oct_dev->pci_dev->dev,
1490 g->sg[0].ptr[0], (skb->len - skb->data_len),
1491 DMA_TO_DEVICE);
1492
1493 i = 1;
1494 while (frags--) {
1495 skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
1496
1497 pci_unmap_page((lio->oct_dev)->pci_dev,
1498 g->sg[(i >> 2)].ptr[(i & 3)],
1499 skb_frag_size(frag), DMA_TO_DEVICE);
1500 i++;
1501 }
1502
1503 iq = skb_iq(lio->oct_dev, skb);
1504 spin_lock(&lio->glist_lock[iq]);
1505 list_add_tail(&g->list, &lio->glist[iq]);
1506 spin_unlock(&lio->glist_lock[iq]);
1507
1508 tx_buffer_free(skb);
1509 }
1510
1511 /**
1512 * \brief Unmap and free gather buffer with response
1513 * @param buf buffer
1514 */
1515 static void free_netsgbuf_with_resp(void *buf)
1516 {
1517 struct octeon_soft_command *sc;
1518 struct octnet_buf_free_info *finfo;
1519 struct sk_buff *skb;
1520 struct lio *lio;
1521 struct octnic_gather *g;
1522 int i, frags, iq;
1523
1524 sc = (struct octeon_soft_command *)buf;
1525 skb = (struct sk_buff *)sc->callback_arg;
1526 finfo = (struct octnet_buf_free_info *)&skb->cb;
1527
1528 lio = finfo->lio;
1529 g = finfo->g;
1530 frags = skb_shinfo(skb)->nr_frags;
1531
1532 dma_unmap_single(&lio->oct_dev->pci_dev->dev,
1533 g->sg[0].ptr[0], (skb->len - skb->data_len),
1534 DMA_TO_DEVICE);
1535
1536 i = 1;
1537 while (frags--) {
1538 skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1];
1539
1540 pci_unmap_page((lio->oct_dev)->pci_dev,
1541 g->sg[(i >> 2)].ptr[(i & 3)],
1542 skb_frag_size(frag), DMA_TO_DEVICE);
1543 i++;
1544 }
1545
1546 iq = skb_iq(lio->oct_dev, skb);
1547
1548 spin_lock(&lio->glist_lock[iq]);
1549 list_add_tail(&g->list, &lio->glist[iq]);
1550 spin_unlock(&lio->glist_lock[iq]);
1551
1552 /* Don't free the skb yet */
1553 }
1554
1555 /**
1556 * \brief Adjust ptp frequency
1557 * @param ptp PTP clock info
1558 * @param ppb how much to adjust by, in parts-per-billion
1559 */
1560 static int liquidio_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
1561 {
1562 struct lio *lio = container_of(ptp, struct lio, ptp_info);
1563 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
1564 u64 comp, delta;
1565 unsigned long flags;
1566 bool neg_adj = false;
1567
1568 if (ppb < 0) {
1569 neg_adj = true;
1570 ppb = -ppb;
1571 }
1572
1573 /* The hardware adds the clock compensation value to the
1574 * PTP clock on every coprocessor clock cycle, so we
1575 * compute the delta in terms of coprocessor clocks.
1576 */
1577 delta = (u64)ppb << 32;
1578 do_div(delta, oct->coproc_clock_rate);
1579
1580 spin_lock_irqsave(&lio->ptp_lock, flags);
1581 comp = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_COMP);
1582 if (neg_adj)
1583 comp -= delta;
1584 else
1585 comp += delta;
1586 lio_pci_writeq(oct, comp, CN6XXX_MIO_PTP_CLOCK_COMP);
1587 spin_unlock_irqrestore(&lio->ptp_lock, flags);
1588
1589 return 0;
1590 }
1591
1592 /**
1593 * \brief Adjust ptp time
1594 * @param ptp PTP clock info
1595 * @param delta how much to adjust by, in nanosecs
1596 */
1597 static int liquidio_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
1598 {
1599 unsigned long flags;
1600 struct lio *lio = container_of(ptp, struct lio, ptp_info);
1601
1602 spin_lock_irqsave(&lio->ptp_lock, flags);
1603 lio->ptp_adjust += delta;
1604 spin_unlock_irqrestore(&lio->ptp_lock, flags);
1605
1606 return 0;
1607 }
1608
1609 /**
1610 * \brief Get hardware clock time, including any adjustment
1611 * @param ptp PTP clock info
1612 * @param ts timespec
1613 */
1614 static int liquidio_ptp_gettime(struct ptp_clock_info *ptp,
1615 struct timespec64 *ts)
1616 {
1617 u64 ns;
1618 unsigned long flags;
1619 struct lio *lio = container_of(ptp, struct lio, ptp_info);
1620 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
1621
1622 spin_lock_irqsave(&lio->ptp_lock, flags);
1623 ns = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_HI);
1624 ns += lio->ptp_adjust;
1625 spin_unlock_irqrestore(&lio->ptp_lock, flags);
1626
1627 *ts = ns_to_timespec64(ns);
1628
1629 return 0;
1630 }
1631
1632 /**
1633 * \brief Set hardware clock time. Reset adjustment
1634 * @param ptp PTP clock info
1635 * @param ts timespec
1636 */
1637 static int liquidio_ptp_settime(struct ptp_clock_info *ptp,
1638 const struct timespec64 *ts)
1639 {
1640 u64 ns;
1641 unsigned long flags;
1642 struct lio *lio = container_of(ptp, struct lio, ptp_info);
1643 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
1644
1645 ns = timespec64_to_ns(ts);
1646
1647 spin_lock_irqsave(&lio->ptp_lock, flags);
1648 lio_pci_writeq(oct, ns, CN6XXX_MIO_PTP_CLOCK_HI);
1649 lio->ptp_adjust = 0;
1650 spin_unlock_irqrestore(&lio->ptp_lock, flags);
1651
1652 return 0;
1653 }
1654
1655 /**
1656 * \brief Check if PTP is enabled
1657 * @param ptp PTP clock info
1658 * @param rq request
1659 * @param on is it on
1660 */
1661 static int
1662 liquidio_ptp_enable(struct ptp_clock_info *ptp __attribute__((unused)),
1663 struct ptp_clock_request *rq __attribute__((unused)),
1664 int on __attribute__((unused)))
1665 {
1666 return -EOPNOTSUPP;
1667 }
1668
1669 /**
1670 * \brief Open PTP clock source
1671 * @param netdev network device
1672 */
1673 static void oct_ptp_open(struct net_device *netdev)
1674 {
1675 struct lio *lio = GET_LIO(netdev);
1676 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
1677
1678 spin_lock_init(&lio->ptp_lock);
1679
1680 snprintf(lio->ptp_info.name, 16, "%s", netdev->name);
1681 lio->ptp_info.owner = THIS_MODULE;
1682 lio->ptp_info.max_adj = 250000000;
1683 lio->ptp_info.n_alarm = 0;
1684 lio->ptp_info.n_ext_ts = 0;
1685 lio->ptp_info.n_per_out = 0;
1686 lio->ptp_info.pps = 0;
1687 lio->ptp_info.adjfreq = liquidio_ptp_adjfreq;
1688 lio->ptp_info.adjtime = liquidio_ptp_adjtime;
1689 lio->ptp_info.gettime64 = liquidio_ptp_gettime;
1690 lio->ptp_info.settime64 = liquidio_ptp_settime;
1691 lio->ptp_info.enable = liquidio_ptp_enable;
1692
1693 lio->ptp_adjust = 0;
1694
1695 lio->ptp_clock = ptp_clock_register(&lio->ptp_info,
1696 &oct->pci_dev->dev);
1697
1698 if (IS_ERR(lio->ptp_clock))
1699 lio->ptp_clock = NULL;
1700 }
1701
1702 /**
1703 * \brief Init PTP clock
1704 * @param oct octeon device
1705 */
1706 static void liquidio_ptp_init(struct octeon_device *oct)
1707 {
1708 u64 clock_comp, cfg;
1709
1710 clock_comp = (u64)NSEC_PER_SEC << 32;
1711 do_div(clock_comp, oct->coproc_clock_rate);
1712 lio_pci_writeq(oct, clock_comp, CN6XXX_MIO_PTP_CLOCK_COMP);
1713
1714 /* Enable */
1715 cfg = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_CFG);
1716 lio_pci_writeq(oct, cfg | 0x01, CN6XXX_MIO_PTP_CLOCK_CFG);
1717 }
1718
1719 /**
1720 * \brief Load firmware to device
1721 * @param oct octeon device
1722 *
1723 * Maps device to firmware filename, requests firmware, and downloads it
1724 */
1725 static int load_firmware(struct octeon_device *oct)
1726 {
1727 int ret = 0;
1728 const struct firmware *fw;
1729 char fw_name[LIO_MAX_FW_FILENAME_LEN];
1730 char *tmp_fw_type;
1731
1732 if (fw_type_is_auto()) {
1733 tmp_fw_type = LIO_FW_NAME_TYPE_NIC;
1734 strncpy(fw_type, tmp_fw_type, sizeof(fw_type));
1735 } else {
1736 tmp_fw_type = fw_type;
1737 }
1738
1739 sprintf(fw_name, "%s%s%s_%s%s", LIO_FW_DIR, LIO_FW_BASE_NAME,
1740 octeon_get_conf(oct)->card_name, tmp_fw_type,
1741 LIO_FW_NAME_SUFFIX);
1742
1743 ret = request_firmware(&fw, fw_name, &oct->pci_dev->dev);
1744 if (ret) {
1745 dev_err(&oct->pci_dev->dev, "Request firmware failed. Could not find file %s.\n",
1746 fw_name);
1747 release_firmware(fw);
1748 return ret;
1749 }
1750
1751 ret = octeon_download_firmware(oct, fw->data, fw->size);
1752
1753 release_firmware(fw);
1754
1755 return ret;
1756 }
1757
1758 /**
1759 * \brief Poll routine for checking transmit queue status
1760 * @param work work_struct data structure
1761 */
1762 static void octnet_poll_check_txq_status(struct work_struct *work)
1763 {
1764 struct cavium_wk *wk = (struct cavium_wk *)work;
1765 struct lio *lio = (struct lio *)wk->ctxptr;
1766
1767 if (!ifstate_check(lio, LIO_IFSTATE_RUNNING))
1768 return;
1769
1770 check_txq_status(lio);
1771 queue_delayed_work(lio->txq_status_wq.wq,
1772 &lio->txq_status_wq.wk.work, msecs_to_jiffies(1));
1773 }
1774
1775 /**
1776 * \brief Sets up the txq poll check
1777 * @param netdev network device
1778 */
1779 static inline int setup_tx_poll_fn(struct net_device *netdev)
1780 {
1781 struct lio *lio = GET_LIO(netdev);
1782 struct octeon_device *oct = lio->oct_dev;
1783
1784 lio->txq_status_wq.wq = alloc_workqueue("txq-status",
1785 WQ_MEM_RECLAIM, 0);
1786 if (!lio->txq_status_wq.wq) {
1787 dev_err(&oct->pci_dev->dev, "unable to create cavium txq status wq\n");
1788 return -1;
1789 }
1790 INIT_DELAYED_WORK(&lio->txq_status_wq.wk.work,
1791 octnet_poll_check_txq_status);
1792 lio->txq_status_wq.wk.ctxptr = lio;
1793 queue_delayed_work(lio->txq_status_wq.wq,
1794 &lio->txq_status_wq.wk.work, msecs_to_jiffies(1));
1795 return 0;
1796 }
1797
1798 static inline void cleanup_tx_poll_fn(struct net_device *netdev)
1799 {
1800 struct lio *lio = GET_LIO(netdev);
1801
1802 if (lio->txq_status_wq.wq) {
1803 cancel_delayed_work_sync(&lio->txq_status_wq.wk.work);
1804 destroy_workqueue(lio->txq_status_wq.wq);
1805 }
1806 }
1807
1808 /**
1809 * \brief Net device open for LiquidIO
1810 * @param netdev network device
1811 */
1812 static int liquidio_open(struct net_device *netdev)
1813 {
1814 struct lio *lio = GET_LIO(netdev);
1815 struct octeon_device *oct = lio->oct_dev;
1816 struct octeon_device_priv *oct_priv =
1817 (struct octeon_device_priv *)oct->priv;
1818 struct napi_struct *napi, *n;
1819
1820 if (oct->props[lio->ifidx].napi_enabled == 0) {
1821 tasklet_disable(&oct_priv->droq_tasklet);
1822
1823 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
1824 napi_enable(napi);
1825
1826 oct->props[lio->ifidx].napi_enabled = 1;
1827
1828 if (OCTEON_CN23XX_PF(oct))
1829 oct->droq[0]->ops.poll_mode = 1;
1830 }
1831
1832 if (oct->ptp_enable)
1833 oct_ptp_open(netdev);
1834
1835 ifstate_set(lio, LIO_IFSTATE_RUNNING);
1836
1837 if (OCTEON_CN23XX_PF(oct)) {
1838 if (!oct->msix_on)
1839 if (setup_tx_poll_fn(netdev))
1840 return -1;
1841 } else {
1842 if (setup_tx_poll_fn(netdev))
1843 return -1;
1844 }
1845
1846 netif_tx_start_all_queues(netdev);
1847
1848 /* Ready for link status updates */
1849 lio->intf_open = 1;
1850
1851 netif_info(lio, ifup, lio->netdev, "Interface Open, ready for traffic\n");
1852
1853 /* tell Octeon to start forwarding packets to host */
1854 send_rx_ctrl_cmd(lio, 1);
1855
1856 /* start periodical statistics fetch */
1857 INIT_DELAYED_WORK(&lio->stats_wk.work, lio_fetch_stats);
1858 lio->stats_wk.ctxptr = lio;
1859 schedule_delayed_work(&lio->stats_wk.work, msecs_to_jiffies
1860 (LIQUIDIO_NDEV_STATS_POLL_TIME_MS));
1861
1862 dev_info(&oct->pci_dev->dev, "%s interface is opened\n",
1863 netdev->name);
1864
1865 return 0;
1866 }
1867
1868 /**
1869 * \brief Net device stop for LiquidIO
1870 * @param netdev network device
1871 */
1872 static int liquidio_stop(struct net_device *netdev)
1873 {
1874 struct lio *lio = GET_LIO(netdev);
1875 struct octeon_device *oct = lio->oct_dev;
1876 struct octeon_device_priv *oct_priv =
1877 (struct octeon_device_priv *)oct->priv;
1878 struct napi_struct *napi, *n;
1879
1880 ifstate_reset(lio, LIO_IFSTATE_RUNNING);
1881
1882 /* Stop any link updates */
1883 lio->intf_open = 0;
1884
1885 stop_txqs(netdev);
1886
1887 /* Inform that netif carrier is down */
1888 netif_carrier_off(netdev);
1889 netif_tx_disable(netdev);
1890
1891 lio->linfo.link.s.link_up = 0;
1892 lio->link_changes++;
1893
1894 /* Tell Octeon that nic interface is down. */
1895 send_rx_ctrl_cmd(lio, 0);
1896
1897 if (OCTEON_CN23XX_PF(oct)) {
1898 if (!oct->msix_on)
1899 cleanup_tx_poll_fn(netdev);
1900 } else {
1901 cleanup_tx_poll_fn(netdev);
1902 }
1903
1904 cancel_delayed_work_sync(&lio->stats_wk.work);
1905
1906 if (lio->ptp_clock) {
1907 ptp_clock_unregister(lio->ptp_clock);
1908 lio->ptp_clock = NULL;
1909 }
1910
1911 /* Wait for any pending Rx descriptors */
1912 if (lio_wait_for_clean_oq(oct))
1913 netif_info(lio, rx_err, lio->netdev,
1914 "Proceeding with stop interface after partial RX desc processing\n");
1915
1916 if (oct->props[lio->ifidx].napi_enabled == 1) {
1917 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
1918 napi_disable(napi);
1919
1920 oct->props[lio->ifidx].napi_enabled = 0;
1921
1922 if (OCTEON_CN23XX_PF(oct))
1923 oct->droq[0]->ops.poll_mode = 0;
1924
1925 tasklet_enable(&oct_priv->droq_tasklet);
1926 }
1927
1928 dev_info(&oct->pci_dev->dev, "%s interface is stopped\n", netdev->name);
1929
1930 return 0;
1931 }
1932
1933 /**
1934 * \brief Converts a mask based on net device flags
1935 * @param netdev network device
1936 *
1937 * This routine generates a octnet_ifflags mask from the net device flags
1938 * received from the OS.
1939 */
1940 static inline enum octnet_ifflags get_new_flags(struct net_device *netdev)
1941 {
1942 enum octnet_ifflags f = OCTNET_IFFLAG_UNICAST;
1943
1944 if (netdev->flags & IFF_PROMISC)
1945 f |= OCTNET_IFFLAG_PROMISC;
1946
1947 if (netdev->flags & IFF_ALLMULTI)
1948 f |= OCTNET_IFFLAG_ALLMULTI;
1949
1950 if (netdev->flags & IFF_MULTICAST) {
1951 f |= OCTNET_IFFLAG_MULTICAST;
1952
1953 /* Accept all multicast addresses if there are more than we
1954 * can handle
1955 */
1956 if (netdev_mc_count(netdev) > MAX_OCTEON_MULTICAST_ADDR)
1957 f |= OCTNET_IFFLAG_ALLMULTI;
1958 }
1959
1960 if (netdev->flags & IFF_BROADCAST)
1961 f |= OCTNET_IFFLAG_BROADCAST;
1962
1963 return f;
1964 }
1965
1966 /**
1967 * \brief Net device set_multicast_list
1968 * @param netdev network device
1969 */
1970 static void liquidio_set_mcast_list(struct net_device *netdev)
1971 {
1972 struct lio *lio = GET_LIO(netdev);
1973 struct octeon_device *oct = lio->oct_dev;
1974 struct octnic_ctrl_pkt nctrl;
1975 struct netdev_hw_addr *ha;
1976 u64 *mc;
1977 int ret;
1978 int mc_count = min(netdev_mc_count(netdev), MAX_OCTEON_MULTICAST_ADDR);
1979
1980 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
1981
1982 /* Create a ctrl pkt command to be sent to core app. */
1983 nctrl.ncmd.u64 = 0;
1984 nctrl.ncmd.s.cmd = OCTNET_CMD_SET_MULTI_LIST;
1985 nctrl.ncmd.s.param1 = get_new_flags(netdev);
1986 nctrl.ncmd.s.param2 = mc_count;
1987 nctrl.ncmd.s.more = mc_count;
1988 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
1989 nctrl.netpndev = (u64)netdev;
1990 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
1991
1992 /* copy all the addresses into the udd */
1993 mc = &nctrl.udd[0];
1994 netdev_for_each_mc_addr(ha, netdev) {
1995 *mc = 0;
1996 memcpy(((u8 *)mc) + 2, ha->addr, ETH_ALEN);
1997 /* no need to swap bytes */
1998
1999 if (++mc > &nctrl.udd[mc_count])
2000 break;
2001 }
2002
2003 /* Apparently, any activity in this call from the kernel has to
2004 * be atomic. So we won't wait for response.
2005 */
2006
2007 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
2008 if (ret) {
2009 dev_err(&oct->pci_dev->dev, "DEVFLAGS change failed in core (ret: 0x%x)\n",
2010 ret);
2011 }
2012 }
2013
2014 /**
2015 * \brief Net device set_mac_address
2016 * @param netdev network device
2017 */
2018 static int liquidio_set_mac(struct net_device *netdev, void *p)
2019 {
2020 int ret = 0;
2021 struct lio *lio = GET_LIO(netdev);
2022 struct octeon_device *oct = lio->oct_dev;
2023 struct sockaddr *addr = (struct sockaddr *)p;
2024 struct octnic_ctrl_pkt nctrl;
2025
2026 if (!is_valid_ether_addr(addr->sa_data))
2027 return -EADDRNOTAVAIL;
2028
2029 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2030
2031 nctrl.ncmd.u64 = 0;
2032 nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR;
2033 nctrl.ncmd.s.param1 = 0;
2034 nctrl.ncmd.s.more = 1;
2035 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
2036 nctrl.netpndev = (u64)netdev;
2037
2038 nctrl.udd[0] = 0;
2039 /* The MAC Address is presented in network byte order. */
2040 memcpy((u8 *)&nctrl.udd[0] + 2, addr->sa_data, ETH_ALEN);
2041
2042 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
2043 if (ret < 0) {
2044 dev_err(&oct->pci_dev->dev, "MAC Address change failed\n");
2045 return -ENOMEM;
2046 }
2047
2048 if (nctrl.sc_status) {
2049 dev_err(&oct->pci_dev->dev,
2050 "%s: MAC Address change failed. sc return=%x\n",
2051 __func__, nctrl.sc_status);
2052 return -EIO;
2053 }
2054
2055 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2056 memcpy(((u8 *)&lio->linfo.hw_addr) + 2, addr->sa_data, ETH_ALEN);
2057
2058 return 0;
2059 }
2060
2061 static void
2062 liquidio_get_stats64(struct net_device *netdev,
2063 struct rtnl_link_stats64 *lstats)
2064 {
2065 struct lio *lio = GET_LIO(netdev);
2066 struct octeon_device *oct;
2067 u64 pkts = 0, drop = 0, bytes = 0;
2068 struct oct_droq_stats *oq_stats;
2069 struct oct_iq_stats *iq_stats;
2070 int i, iq_no, oq_no;
2071
2072 oct = lio->oct_dev;
2073
2074 if (ifstate_check(lio, LIO_IFSTATE_RESETTING))
2075 return;
2076
2077 for (i = 0; i < oct->num_iqs; i++) {
2078 iq_no = lio->linfo.txpciq[i].s.q_no;
2079 iq_stats = &oct->instr_queue[iq_no]->stats;
2080 pkts += iq_stats->tx_done;
2081 drop += iq_stats->tx_dropped;
2082 bytes += iq_stats->tx_tot_bytes;
2083 }
2084
2085 lstats->tx_packets = pkts;
2086 lstats->tx_bytes = bytes;
2087 lstats->tx_dropped = drop;
2088
2089 pkts = 0;
2090 drop = 0;
2091 bytes = 0;
2092
2093 for (i = 0; i < oct->num_oqs; i++) {
2094 oq_no = lio->linfo.rxpciq[i].s.q_no;
2095 oq_stats = &oct->droq[oq_no]->stats;
2096 pkts += oq_stats->rx_pkts_received;
2097 drop += (oq_stats->rx_dropped +
2098 oq_stats->dropped_nodispatch +
2099 oq_stats->dropped_toomany +
2100 oq_stats->dropped_nomem);
2101 bytes += oq_stats->rx_bytes_received;
2102 }
2103
2104 lstats->rx_bytes = bytes;
2105 lstats->rx_packets = pkts;
2106 lstats->rx_dropped = drop;
2107
2108 lstats->multicast = oct->link_stats.fromwire.fw_total_mcast;
2109 lstats->collisions = oct->link_stats.fromhost.total_collisions;
2110
2111 /* detailed rx_errors: */
2112 lstats->rx_length_errors = oct->link_stats.fromwire.l2_err;
2113 /* recved pkt with crc error */
2114 lstats->rx_crc_errors = oct->link_stats.fromwire.fcs_err;
2115 /* recv'd frame alignment error */
2116 lstats->rx_frame_errors = oct->link_stats.fromwire.frame_err;
2117 /* recv'r fifo overrun */
2118 lstats->rx_fifo_errors = oct->link_stats.fromwire.fifo_err;
2119
2120 lstats->rx_errors = lstats->rx_length_errors + lstats->rx_crc_errors +
2121 lstats->rx_frame_errors + lstats->rx_fifo_errors;
2122
2123 /* detailed tx_errors */
2124 lstats->tx_aborted_errors = oct->link_stats.fromhost.fw_err_pko;
2125 lstats->tx_carrier_errors = oct->link_stats.fromhost.fw_err_link;
2126 lstats->tx_fifo_errors = oct->link_stats.fromhost.fifo_err;
2127
2128 lstats->tx_errors = lstats->tx_aborted_errors +
2129 lstats->tx_carrier_errors +
2130 lstats->tx_fifo_errors;
2131 }
2132
2133 /**
2134 * \brief Handler for SIOCSHWTSTAMP ioctl
2135 * @param netdev network device
2136 * @param ifr interface request
2137 * @param cmd command
2138 */
2139 static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr)
2140 {
2141 struct hwtstamp_config conf;
2142 struct lio *lio = GET_LIO(netdev);
2143
2144 if (copy_from_user(&conf, ifr->ifr_data, sizeof(conf)))
2145 return -EFAULT;
2146
2147 if (conf.flags)
2148 return -EINVAL;
2149
2150 switch (conf.tx_type) {
2151 case HWTSTAMP_TX_ON:
2152 case HWTSTAMP_TX_OFF:
2153 break;
2154 default:
2155 return -ERANGE;
2156 }
2157
2158 switch (conf.rx_filter) {
2159 case HWTSTAMP_FILTER_NONE:
2160 break;
2161 case HWTSTAMP_FILTER_ALL:
2162 case HWTSTAMP_FILTER_SOME:
2163 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2164 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2165 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2166 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2167 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2168 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2169 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2170 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2171 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2172 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2173 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2174 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2175 case HWTSTAMP_FILTER_NTP_ALL:
2176 conf.rx_filter = HWTSTAMP_FILTER_ALL;
2177 break;
2178 default:
2179 return -ERANGE;
2180 }
2181
2182 if (conf.rx_filter == HWTSTAMP_FILTER_ALL)
2183 ifstate_set(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
2184
2185 else
2186 ifstate_reset(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
2187
2188 return copy_to_user(ifr->ifr_data, &conf, sizeof(conf)) ? -EFAULT : 0;
2189 }
2190
2191 /**
2192 * \brief ioctl handler
2193 * @param netdev network device
2194 * @param ifr interface request
2195 * @param cmd command
2196 */
2197 static int liquidio_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2198 {
2199 struct lio *lio = GET_LIO(netdev);
2200
2201 switch (cmd) {
2202 case SIOCSHWTSTAMP:
2203 if (lio->oct_dev->ptp_enable)
2204 return hwtstamp_ioctl(netdev, ifr);
2205 /* fall through */
2206 default:
2207 return -EOPNOTSUPP;
2208 }
2209 }
2210
2211 /**
2212 * \brief handle a Tx timestamp response
2213 * @param status response status
2214 * @param buf pointer to skb
2215 */
2216 static void handle_timestamp(struct octeon_device *oct,
2217 u32 status,
2218 void *buf)
2219 {
2220 struct octnet_buf_free_info *finfo;
2221 struct octeon_soft_command *sc;
2222 struct oct_timestamp_resp *resp;
2223 struct lio *lio;
2224 struct sk_buff *skb = (struct sk_buff *)buf;
2225
2226 finfo = (struct octnet_buf_free_info *)skb->cb;
2227 lio = finfo->lio;
2228 sc = finfo->sc;
2229 oct = lio->oct_dev;
2230 resp = (struct oct_timestamp_resp *)sc->virtrptr;
2231
2232 if (status != OCTEON_REQUEST_DONE) {
2233 dev_err(&oct->pci_dev->dev, "Tx timestamp instruction failed. Status: %llx\n",
2234 CVM_CAST64(status));
2235 resp->timestamp = 0;
2236 }
2237
2238 octeon_swap_8B_data(&resp->timestamp, 1);
2239
2240 if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS) != 0)) {
2241 struct skb_shared_hwtstamps ts;
2242 u64 ns = resp->timestamp;
2243
2244 netif_info(lio, tx_done, lio->netdev,
2245 "Got resulting SKBTX_HW_TSTAMP skb=%p ns=%016llu\n",
2246 skb, (unsigned long long)ns);
2247 ts.hwtstamp = ns_to_ktime(ns + lio->ptp_adjust);
2248 skb_tstamp_tx(skb, &ts);
2249 }
2250
2251 octeon_free_soft_command(oct, sc);
2252 tx_buffer_free(skb);
2253 }
2254
2255 /* \brief Send a data packet that will be timestamped
2256 * @param oct octeon device
2257 * @param ndata pointer to network data
2258 * @param finfo pointer to private network data
2259 */
2260 static inline int send_nic_timestamp_pkt(struct octeon_device *oct,
2261 struct octnic_data_pkt *ndata,
2262 struct octnet_buf_free_info *finfo,
2263 int xmit_more)
2264 {
2265 int retval;
2266 struct octeon_soft_command *sc;
2267 struct lio *lio;
2268 int ring_doorbell;
2269 u32 len;
2270
2271 lio = finfo->lio;
2272
2273 sc = octeon_alloc_soft_command_resp(oct, &ndata->cmd,
2274 sizeof(struct oct_timestamp_resp));
2275 finfo->sc = sc;
2276
2277 if (!sc) {
2278 dev_err(&oct->pci_dev->dev, "No memory for timestamped data packet\n");
2279 return IQ_SEND_FAILED;
2280 }
2281
2282 if (ndata->reqtype == REQTYPE_NORESP_NET)
2283 ndata->reqtype = REQTYPE_RESP_NET;
2284 else if (ndata->reqtype == REQTYPE_NORESP_NET_SG)
2285 ndata->reqtype = REQTYPE_RESP_NET_SG;
2286
2287 sc->callback = handle_timestamp;
2288 sc->callback_arg = finfo->skb;
2289 sc->iq_no = ndata->q_no;
2290
2291 if (OCTEON_CN23XX_PF(oct))
2292 len = (u32)((struct octeon_instr_ih3 *)
2293 (&sc->cmd.cmd3.ih3))->dlengsz;
2294 else
2295 len = (u32)((struct octeon_instr_ih2 *)
2296 (&sc->cmd.cmd2.ih2))->dlengsz;
2297
2298 ring_doorbell = !xmit_more;
2299
2300 retval = octeon_send_command(oct, sc->iq_no, ring_doorbell, &sc->cmd,
2301 sc, len, ndata->reqtype);
2302
2303 if (retval == IQ_SEND_FAILED) {
2304 dev_err(&oct->pci_dev->dev, "timestamp data packet failed status: %x\n",
2305 retval);
2306 octeon_free_soft_command(oct, sc);
2307 } else {
2308 netif_info(lio, tx_queued, lio->netdev, "Queued timestamp packet\n");
2309 }
2310
2311 return retval;
2312 }
2313
2314 /** \brief Transmit networks packets to the Octeon interface
2315 * @param skbuff skbuff struct to be passed to network layer.
2316 * @param netdev pointer to network device
2317 * @returns whether the packet was transmitted to the device okay or not
2318 * (NETDEV_TX_OK or NETDEV_TX_BUSY)
2319 */
2320 static netdev_tx_t liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
2321 {
2322 struct lio *lio;
2323 struct octnet_buf_free_info *finfo;
2324 union octnic_cmd_setup cmdsetup;
2325 struct octnic_data_pkt ndata;
2326 struct octeon_device *oct;
2327 struct oct_iq_stats *stats;
2328 struct octeon_instr_irh *irh;
2329 union tx_info *tx_info;
2330 int status = 0;
2331 int q_idx = 0, iq_no = 0;
2332 int j, xmit_more = 0;
2333 u64 dptr = 0;
2334 u32 tag = 0;
2335
2336 lio = GET_LIO(netdev);
2337 oct = lio->oct_dev;
2338
2339 q_idx = skb_iq(oct, skb);
2340 tag = q_idx;
2341 iq_no = lio->linfo.txpciq[q_idx].s.q_no;
2342
2343 stats = &oct->instr_queue[iq_no]->stats;
2344
2345 /* Check for all conditions in which the current packet cannot be
2346 * transmitted.
2347 */
2348 if (!(atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING) ||
2349 (!lio->linfo.link.s.link_up) ||
2350 (skb->len <= 0)) {
2351 netif_info(lio, tx_err, lio->netdev,
2352 "Transmit failed link_status : %d\n",
2353 lio->linfo.link.s.link_up);
2354 goto lio_xmit_failed;
2355 }
2356
2357 /* Use space in skb->cb to store info used to unmap and
2358 * free the buffers.
2359 */
2360 finfo = (struct octnet_buf_free_info *)skb->cb;
2361 finfo->lio = lio;
2362 finfo->skb = skb;
2363 finfo->sc = NULL;
2364
2365 /* Prepare the attributes for the data to be passed to OSI. */
2366 memset(&ndata, 0, sizeof(struct octnic_data_pkt));
2367
2368 ndata.buf = (void *)finfo;
2369
2370 ndata.q_no = iq_no;
2371
2372 if (octnet_iq_is_full(oct, ndata.q_no)) {
2373 /* defer sending if queue is full */
2374 netif_info(lio, tx_err, lio->netdev, "Transmit failed iq:%d full\n",
2375 ndata.q_no);
2376 stats->tx_iq_busy++;
2377 return NETDEV_TX_BUSY;
2378 }
2379
2380 /* pr_info(" XMIT - valid Qs: %d, 1st Q no: %d, cpu: %d, q_no:%d\n",
2381 * lio->linfo.num_txpciq, lio->txq, cpu, ndata.q_no);
2382 */
2383
2384 ndata.datasize = skb->len;
2385
2386 cmdsetup.u64 = 0;
2387 cmdsetup.s.iq_no = iq_no;
2388
2389 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2390 if (skb->encapsulation) {
2391 cmdsetup.s.tnl_csum = 1;
2392 stats->tx_vxlan++;
2393 } else {
2394 cmdsetup.s.transport_csum = 1;
2395 }
2396 }
2397 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
2398 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
2399 cmdsetup.s.timestamp = 1;
2400 }
2401
2402 if (skb_shinfo(skb)->nr_frags == 0) {
2403 cmdsetup.s.u.datasize = skb->len;
2404 octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag);
2405
2406 /* Offload checksum calculation for TCP/UDP packets */
2407 dptr = dma_map_single(&oct->pci_dev->dev,
2408 skb->data,
2409 skb->len,
2410 DMA_TO_DEVICE);
2411 if (dma_mapping_error(&oct->pci_dev->dev, dptr)) {
2412 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 1\n",
2413 __func__);
2414 stats->tx_dmamap_fail++;
2415 return NETDEV_TX_BUSY;
2416 }
2417
2418 if (OCTEON_CN23XX_PF(oct))
2419 ndata.cmd.cmd3.dptr = dptr;
2420 else
2421 ndata.cmd.cmd2.dptr = dptr;
2422 finfo->dptr = dptr;
2423 ndata.reqtype = REQTYPE_NORESP_NET;
2424
2425 } else {
2426 int i, frags;
2427 skb_frag_t *frag;
2428 struct octnic_gather *g;
2429
2430 spin_lock(&lio->glist_lock[q_idx]);
2431 g = (struct octnic_gather *)
2432 lio_list_delete_head(&lio->glist[q_idx]);
2433 spin_unlock(&lio->glist_lock[q_idx]);
2434
2435 if (!g) {
2436 netif_info(lio, tx_err, lio->netdev,
2437 "Transmit scatter gather: glist null!\n");
2438 goto lio_xmit_failed;
2439 }
2440
2441 cmdsetup.s.gather = 1;
2442 cmdsetup.s.u.gatherptrs = (skb_shinfo(skb)->nr_frags + 1);
2443 octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag);
2444
2445 memset(g->sg, 0, g->sg_size);
2446
2447 g->sg[0].ptr[0] = dma_map_single(&oct->pci_dev->dev,
2448 skb->data,
2449 (skb->len - skb->data_len),
2450 DMA_TO_DEVICE);
2451 if (dma_mapping_error(&oct->pci_dev->dev, g->sg[0].ptr[0])) {
2452 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 2\n",
2453 __func__);
2454 stats->tx_dmamap_fail++;
2455 return NETDEV_TX_BUSY;
2456 }
2457 add_sg_size(&g->sg[0], (skb->len - skb->data_len), 0);
2458
2459 frags = skb_shinfo(skb)->nr_frags;
2460 i = 1;
2461 while (frags--) {
2462 frag = &skb_shinfo(skb)->frags[i - 1];
2463
2464 g->sg[(i >> 2)].ptr[(i & 3)] =
2465 skb_frag_dma_map(&oct->pci_dev->dev,
2466 frag, 0, skb_frag_size(frag),
2467 DMA_TO_DEVICE);
2468
2469 if (dma_mapping_error(&oct->pci_dev->dev,
2470 g->sg[i >> 2].ptr[i & 3])) {
2471 dma_unmap_single(&oct->pci_dev->dev,
2472 g->sg[0].ptr[0],
2473 skb->len - skb->data_len,
2474 DMA_TO_DEVICE);
2475 for (j = 1; j < i; j++) {
2476 frag = &skb_shinfo(skb)->frags[j - 1];
2477 dma_unmap_page(&oct->pci_dev->dev,
2478 g->sg[j >> 2].ptr[j & 3],
2479 skb_frag_size(frag),
2480 DMA_TO_DEVICE);
2481 }
2482 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 3\n",
2483 __func__);
2484 return NETDEV_TX_BUSY;
2485 }
2486
2487 add_sg_size(&g->sg[(i >> 2)], skb_frag_size(frag),
2488 (i & 3));
2489 i++;
2490 }
2491
2492 dptr = g->sg_dma_ptr;
2493
2494 if (OCTEON_CN23XX_PF(oct))
2495 ndata.cmd.cmd3.dptr = dptr;
2496 else
2497 ndata.cmd.cmd2.dptr = dptr;
2498 finfo->dptr = dptr;
2499 finfo->g = g;
2500
2501 ndata.reqtype = REQTYPE_NORESP_NET_SG;
2502 }
2503
2504 if (OCTEON_CN23XX_PF(oct)) {
2505 irh = (struct octeon_instr_irh *)&ndata.cmd.cmd3.irh;
2506 tx_info = (union tx_info *)&ndata.cmd.cmd3.ossp[0];
2507 } else {
2508 irh = (struct octeon_instr_irh *)&ndata.cmd.cmd2.irh;
2509 tx_info = (union tx_info *)&ndata.cmd.cmd2.ossp[0];
2510 }
2511
2512 if (skb_shinfo(skb)->gso_size) {
2513 tx_info->s.gso_size = skb_shinfo(skb)->gso_size;
2514 tx_info->s.gso_segs = skb_shinfo(skb)->gso_segs;
2515 stats->tx_gso++;
2516 }
2517
2518 /* HW insert VLAN tag */
2519 if (skb_vlan_tag_present(skb)) {
2520 irh->priority = skb_vlan_tag_get(skb) >> 13;
2521 irh->vlan = skb_vlan_tag_get(skb) & 0xfff;
2522 }
2523
2524 xmit_more = netdev_xmit_more();
2525
2526 if (unlikely(cmdsetup.s.timestamp))
2527 status = send_nic_timestamp_pkt(oct, &ndata, finfo, xmit_more);
2528 else
2529 status = octnet_send_nic_data_pkt(oct, &ndata, xmit_more);
2530 if (status == IQ_SEND_FAILED)
2531 goto lio_xmit_failed;
2532
2533 netif_info(lio, tx_queued, lio->netdev, "Transmit queued successfully\n");
2534
2535 if (status == IQ_SEND_STOP)
2536 netif_stop_subqueue(netdev, q_idx);
2537
2538 netif_trans_update(netdev);
2539
2540 if (tx_info->s.gso_segs)
2541 stats->tx_done += tx_info->s.gso_segs;
2542 else
2543 stats->tx_done++;
2544 stats->tx_tot_bytes += ndata.datasize;
2545
2546 return NETDEV_TX_OK;
2547
2548 lio_xmit_failed:
2549 stats->tx_dropped++;
2550 netif_info(lio, tx_err, lio->netdev, "IQ%d Transmit dropped:%llu\n",
2551 iq_no, stats->tx_dropped);
2552 if (dptr)
2553 dma_unmap_single(&oct->pci_dev->dev, dptr,
2554 ndata.datasize, DMA_TO_DEVICE);
2555
2556 octeon_ring_doorbell_locked(oct, iq_no);
2557
2558 tx_buffer_free(skb);
2559 return NETDEV_TX_OK;
2560 }
2561
2562 /** \brief Network device Tx timeout
2563 * @param netdev pointer to network device
2564 */
2565 static void liquidio_tx_timeout(struct net_device *netdev, unsigned int txqueue)
2566 {
2567 struct lio *lio;
2568
2569 lio = GET_LIO(netdev);
2570
2571 netif_info(lio, tx_err, lio->netdev,
2572 "Transmit timeout tx_dropped:%ld, waking up queues now!!\n",
2573 netdev->stats.tx_dropped);
2574 netif_trans_update(netdev);
2575 wake_txqs(netdev);
2576 }
2577
2578 static int liquidio_vlan_rx_add_vid(struct net_device *netdev,
2579 __be16 proto __attribute__((unused)),
2580 u16 vid)
2581 {
2582 struct lio *lio = GET_LIO(netdev);
2583 struct octeon_device *oct = lio->oct_dev;
2584 struct octnic_ctrl_pkt nctrl;
2585 int ret = 0;
2586
2587 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2588
2589 nctrl.ncmd.u64 = 0;
2590 nctrl.ncmd.s.cmd = OCTNET_CMD_ADD_VLAN_FILTER;
2591 nctrl.ncmd.s.param1 = vid;
2592 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
2593 nctrl.netpndev = (u64)netdev;
2594 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
2595
2596 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
2597 if (ret) {
2598 dev_err(&oct->pci_dev->dev, "Add VLAN filter failed in core (ret: 0x%x)\n",
2599 ret);
2600 if (ret > 0)
2601 ret = -EIO;
2602 }
2603
2604 return ret;
2605 }
2606
2607 static int liquidio_vlan_rx_kill_vid(struct net_device *netdev,
2608 __be16 proto __attribute__((unused)),
2609 u16 vid)
2610 {
2611 struct lio *lio = GET_LIO(netdev);
2612 struct octeon_device *oct = lio->oct_dev;
2613 struct octnic_ctrl_pkt nctrl;
2614 int ret = 0;
2615
2616 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2617
2618 nctrl.ncmd.u64 = 0;
2619 nctrl.ncmd.s.cmd = OCTNET_CMD_DEL_VLAN_FILTER;
2620 nctrl.ncmd.s.param1 = vid;
2621 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
2622 nctrl.netpndev = (u64)netdev;
2623 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
2624
2625 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
2626 if (ret) {
2627 dev_err(&oct->pci_dev->dev, "Del VLAN filter failed in core (ret: 0x%x)\n",
2628 ret);
2629 if (ret > 0)
2630 ret = -EIO;
2631 }
2632 return ret;
2633 }
2634
2635 /** Sending command to enable/disable RX checksum offload
2636 * @param netdev pointer to network device
2637 * @param command OCTNET_CMD_TNL_RX_CSUM_CTL
2638 * @param rx_cmd_bit OCTNET_CMD_RXCSUM_ENABLE/
2639 * OCTNET_CMD_RXCSUM_DISABLE
2640 * @returns SUCCESS or FAILURE
2641 */
2642 static int liquidio_set_rxcsum_command(struct net_device *netdev, int command,
2643 u8 rx_cmd)
2644 {
2645 struct lio *lio = GET_LIO(netdev);
2646 struct octeon_device *oct = lio->oct_dev;
2647 struct octnic_ctrl_pkt nctrl;
2648 int ret = 0;
2649
2650 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2651
2652 nctrl.ncmd.u64 = 0;
2653 nctrl.ncmd.s.cmd = command;
2654 nctrl.ncmd.s.param1 = rx_cmd;
2655 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
2656 nctrl.netpndev = (u64)netdev;
2657 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
2658
2659 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
2660 if (ret) {
2661 dev_err(&oct->pci_dev->dev,
2662 "DEVFLAGS RXCSUM change failed in core(ret:0x%x)\n",
2663 ret);
2664 if (ret > 0)
2665 ret = -EIO;
2666 }
2667 return ret;
2668 }
2669
2670 /** Sending command to add/delete VxLAN UDP port to firmware
2671 * @param netdev pointer to network device
2672 * @param command OCTNET_CMD_VXLAN_PORT_CONFIG
2673 * @param vxlan_port VxLAN port to be added or deleted
2674 * @param vxlan_cmd_bit OCTNET_CMD_VXLAN_PORT_ADD,
2675 * OCTNET_CMD_VXLAN_PORT_DEL
2676 * @returns SUCCESS or FAILURE
2677 */
2678 static int liquidio_vxlan_port_command(struct net_device *netdev, int command,
2679 u16 vxlan_port, u8 vxlan_cmd_bit)
2680 {
2681 struct lio *lio = GET_LIO(netdev);
2682 struct octeon_device *oct = lio->oct_dev;
2683 struct octnic_ctrl_pkt nctrl;
2684 int ret = 0;
2685
2686 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2687
2688 nctrl.ncmd.u64 = 0;
2689 nctrl.ncmd.s.cmd = command;
2690 nctrl.ncmd.s.more = vxlan_cmd_bit;
2691 nctrl.ncmd.s.param1 = vxlan_port;
2692 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
2693 nctrl.netpndev = (u64)netdev;
2694 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
2695
2696 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
2697 if (ret) {
2698 dev_err(&oct->pci_dev->dev,
2699 "VxLAN port add/delete failed in core (ret:0x%x)\n",
2700 ret);
2701 if (ret > 0)
2702 ret = -EIO;
2703 }
2704 return ret;
2705 }
2706
2707 /** \brief Net device fix features
2708 * @param netdev pointer to network device
2709 * @param request features requested
2710 * @returns updated features list
2711 */
2712 static netdev_features_t liquidio_fix_features(struct net_device *netdev,
2713 netdev_features_t request)
2714 {
2715 struct lio *lio = netdev_priv(netdev);
2716
2717 if ((request & NETIF_F_RXCSUM) &&
2718 !(lio->dev_capability & NETIF_F_RXCSUM))
2719 request &= ~NETIF_F_RXCSUM;
2720
2721 if ((request & NETIF_F_HW_CSUM) &&
2722 !(lio->dev_capability & NETIF_F_HW_CSUM))
2723 request &= ~NETIF_F_HW_CSUM;
2724
2725 if ((request & NETIF_F_TSO) && !(lio->dev_capability & NETIF_F_TSO))
2726 request &= ~NETIF_F_TSO;
2727
2728 if ((request & NETIF_F_TSO6) && !(lio->dev_capability & NETIF_F_TSO6))
2729 request &= ~NETIF_F_TSO6;
2730
2731 if ((request & NETIF_F_LRO) && !(lio->dev_capability & NETIF_F_LRO))
2732 request &= ~NETIF_F_LRO;
2733
2734 /*Disable LRO if RXCSUM is off */
2735 if (!(request & NETIF_F_RXCSUM) && (netdev->features & NETIF_F_LRO) &&
2736 (lio->dev_capability & NETIF_F_LRO))
2737 request &= ~NETIF_F_LRO;
2738
2739 if ((request & NETIF_F_HW_VLAN_CTAG_FILTER) &&
2740 !(lio->dev_capability & NETIF_F_HW_VLAN_CTAG_FILTER))
2741 request &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
2742
2743 return request;
2744 }
2745
2746 /** \brief Net device set features
2747 * @param netdev pointer to network device
2748 * @param features features to enable/disable
2749 */
2750 static int liquidio_set_features(struct net_device *netdev,
2751 netdev_features_t features)
2752 {
2753 struct lio *lio = netdev_priv(netdev);
2754
2755 if ((features & NETIF_F_LRO) &&
2756 (lio->dev_capability & NETIF_F_LRO) &&
2757 !(netdev->features & NETIF_F_LRO))
2758 liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE,
2759 OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
2760 else if (!(features & NETIF_F_LRO) &&
2761 (lio->dev_capability & NETIF_F_LRO) &&
2762 (netdev->features & NETIF_F_LRO))
2763 liquidio_set_feature(netdev, OCTNET_CMD_LRO_DISABLE,
2764 OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
2765
2766 /* Sending command to firmware to enable/disable RX checksum
2767 * offload settings using ethtool
2768 */
2769 if (!(netdev->features & NETIF_F_RXCSUM) &&
2770 (lio->enc_dev_capability & NETIF_F_RXCSUM) &&
2771 (features & NETIF_F_RXCSUM))
2772 liquidio_set_rxcsum_command(netdev,
2773 OCTNET_CMD_TNL_RX_CSUM_CTL,
2774 OCTNET_CMD_RXCSUM_ENABLE);
2775 else if ((netdev->features & NETIF_F_RXCSUM) &&
2776 (lio->enc_dev_capability & NETIF_F_RXCSUM) &&
2777 !(features & NETIF_F_RXCSUM))
2778 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
2779 OCTNET_CMD_RXCSUM_DISABLE);
2780
2781 if ((features & NETIF_F_HW_VLAN_CTAG_FILTER) &&
2782 (lio->dev_capability & NETIF_F_HW_VLAN_CTAG_FILTER) &&
2783 !(netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER))
2784 liquidio_set_feature(netdev, OCTNET_CMD_VLAN_FILTER_CTL,
2785 OCTNET_CMD_VLAN_FILTER_ENABLE);
2786 else if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER) &&
2787 (lio->dev_capability & NETIF_F_HW_VLAN_CTAG_FILTER) &&
2788 (netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER))
2789 liquidio_set_feature(netdev, OCTNET_CMD_VLAN_FILTER_CTL,
2790 OCTNET_CMD_VLAN_FILTER_DISABLE);
2791
2792 return 0;
2793 }
2794
2795 static void liquidio_add_vxlan_port(struct net_device *netdev,
2796 struct udp_tunnel_info *ti)
2797 {
2798 if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2799 return;
2800
2801 liquidio_vxlan_port_command(netdev,
2802 OCTNET_CMD_VXLAN_PORT_CONFIG,
2803 htons(ti->port),
2804 OCTNET_CMD_VXLAN_PORT_ADD);
2805 }
2806
2807 static void liquidio_del_vxlan_port(struct net_device *netdev,
2808 struct udp_tunnel_info *ti)
2809 {
2810 if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2811 return;
2812
2813 liquidio_vxlan_port_command(netdev,
2814 OCTNET_CMD_VXLAN_PORT_CONFIG,
2815 htons(ti->port),
2816 OCTNET_CMD_VXLAN_PORT_DEL);
2817 }
2818
2819 static int __liquidio_set_vf_mac(struct net_device *netdev, int vfidx,
2820 u8 *mac, bool is_admin_assigned)
2821 {
2822 struct lio *lio = GET_LIO(netdev);
2823 struct octeon_device *oct = lio->oct_dev;
2824 struct octnic_ctrl_pkt nctrl;
2825 int ret = 0;
2826
2827 if (!is_valid_ether_addr(mac))
2828 return -EINVAL;
2829
2830 if (vfidx < 0 || vfidx >= oct->sriov_info.max_vfs)
2831 return -EINVAL;
2832
2833 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2834
2835 nctrl.ncmd.u64 = 0;
2836 nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR;
2837 /* vfidx is 0 based, but vf_num (param1) is 1 based */
2838 nctrl.ncmd.s.param1 = vfidx + 1;
2839 nctrl.ncmd.s.more = 1;
2840 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
2841 nctrl.netpndev = (u64)netdev;
2842 if (is_admin_assigned) {
2843 nctrl.ncmd.s.param2 = true;
2844 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
2845 }
2846
2847 nctrl.udd[0] = 0;
2848 /* The MAC Address is presented in network byte order. */
2849 ether_addr_copy((u8 *)&nctrl.udd[0] + 2, mac);
2850
2851 oct->sriov_info.vf_macaddr[vfidx] = nctrl.udd[0];
2852
2853 ret = octnet_send_nic_ctrl_pkt(oct, &nctrl);
2854 if (ret > 0)
2855 ret = -EIO;
2856
2857 return ret;
2858 }
2859
2860 static int liquidio_set_vf_mac(struct net_device *netdev, int vfidx, u8 *mac)
2861 {
2862 struct lio *lio = GET_LIO(netdev);
2863 struct octeon_device *oct = lio->oct_dev;
2864 int retval;
2865
2866 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced)
2867 return -EINVAL;
2868
2869 retval = __liquidio_set_vf_mac(netdev, vfidx, mac, true);
2870 if (!retval)
2871 cn23xx_tell_vf_its_macaddr_changed(oct, vfidx, mac);
2872
2873 return retval;
2874 }
2875
2876 static int liquidio_set_vf_spoofchk(struct net_device *netdev, int vfidx,
2877 bool enable)
2878 {
2879 struct lio *lio = GET_LIO(netdev);
2880 struct octeon_device *oct = lio->oct_dev;
2881 struct octnic_ctrl_pkt nctrl;
2882 int retval;
2883
2884 if (!(oct->fw_info.app_cap_flags & LIQUIDIO_SPOOFCHK_CAP)) {
2885 netif_info(lio, drv, lio->netdev,
2886 "firmware does not support spoofchk\n");
2887 return -EOPNOTSUPP;
2888 }
2889
2890 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) {
2891 netif_info(lio, drv, lio->netdev, "Invalid vfidx %d\n", vfidx);
2892 return -EINVAL;
2893 }
2894
2895 if (enable) {
2896 if (oct->sriov_info.vf_spoofchk[vfidx])
2897 return 0;
2898 } else {
2899 /* Clear */
2900 if (!oct->sriov_info.vf_spoofchk[vfidx])
2901 return 0;
2902 }
2903
2904 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2905 nctrl.ncmd.s.cmdgroup = OCTNET_CMD_GROUP1;
2906 nctrl.ncmd.s.cmd = OCTNET_CMD_SET_VF_SPOOFCHK;
2907 nctrl.ncmd.s.param1 =
2908 vfidx + 1; /* vfidx is 0 based,
2909 * but vf_num (param1) is 1 based
2910 */
2911 nctrl.ncmd.s.param2 = enable;
2912 nctrl.ncmd.s.more = 0;
2913 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
2914 nctrl.cb_fn = NULL;
2915
2916 retval = octnet_send_nic_ctrl_pkt(oct, &nctrl);
2917
2918 if (retval) {
2919 netif_info(lio, drv, lio->netdev,
2920 "Failed to set VF %d spoofchk %s\n", vfidx,
2921 enable ? "on" : "off");
2922 return -1;
2923 }
2924
2925 oct->sriov_info.vf_spoofchk[vfidx] = enable;
2926 netif_info(lio, drv, lio->netdev, "VF %u spoofchk is %s\n", vfidx,
2927 enable ? "on" : "off");
2928
2929 return 0;
2930 }
2931
2932 static int liquidio_set_vf_vlan(struct net_device *netdev, int vfidx,
2933 u16 vlan, u8 qos, __be16 vlan_proto)
2934 {
2935 struct lio *lio = GET_LIO(netdev);
2936 struct octeon_device *oct = lio->oct_dev;
2937 struct octnic_ctrl_pkt nctrl;
2938 u16 vlantci;
2939 int ret = 0;
2940
2941 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced)
2942 return -EINVAL;
2943
2944 if (vlan_proto != htons(ETH_P_8021Q))
2945 return -EPROTONOSUPPORT;
2946
2947 if (vlan >= VLAN_N_VID || qos > 7)
2948 return -EINVAL;
2949
2950 if (vlan)
2951 vlantci = vlan | (u16)qos << VLAN_PRIO_SHIFT;
2952 else
2953 vlantci = 0;
2954
2955 if (oct->sriov_info.vf_vlantci[vfidx] == vlantci)
2956 return 0;
2957
2958 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2959
2960 if (vlan)
2961 nctrl.ncmd.s.cmd = OCTNET_CMD_ADD_VLAN_FILTER;
2962 else
2963 nctrl.ncmd.s.cmd = OCTNET_CMD_DEL_VLAN_FILTER;
2964
2965 nctrl.ncmd.s.param1 = vlantci;
2966 nctrl.ncmd.s.param2 =
2967 vfidx + 1; /* vfidx is 0 based, but vf_num (param2) is 1 based */
2968 nctrl.ncmd.s.more = 0;
2969 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
2970 nctrl.cb_fn = NULL;
2971
2972 ret = octnet_send_nic_ctrl_pkt(oct, &nctrl);
2973 if (ret) {
2974 if (ret > 0)
2975 ret = -EIO;
2976 return ret;
2977 }
2978
2979 oct->sriov_info.vf_vlantci[vfidx] = vlantci;
2980
2981 return ret;
2982 }
2983
2984 static int liquidio_get_vf_config(struct net_device *netdev, int vfidx,
2985 struct ifla_vf_info *ivi)
2986 {
2987 struct lio *lio = GET_LIO(netdev);
2988 struct octeon_device *oct = lio->oct_dev;
2989 u8 *macaddr;
2990
2991 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced)
2992 return -EINVAL;
2993
2994 memset(ivi, 0, sizeof(struct ifla_vf_info));
2995
2996 ivi->vf = vfidx;
2997 macaddr = 2 + (u8 *)&oct->sriov_info.vf_macaddr[vfidx];
2998 ether_addr_copy(&ivi->mac[0], macaddr);
2999 ivi->vlan = oct->sriov_info.vf_vlantci[vfidx] & VLAN_VID_MASK;
3000 ivi->qos = oct->sriov_info.vf_vlantci[vfidx] >> VLAN_PRIO_SHIFT;
3001 if (oct->sriov_info.trusted_vf.active &&
3002 oct->sriov_info.trusted_vf.id == vfidx)
3003 ivi->trusted = true;
3004 else
3005 ivi->trusted = false;
3006 ivi->linkstate = oct->sriov_info.vf_linkstate[vfidx];
3007 ivi->spoofchk = oct->sriov_info.vf_spoofchk[vfidx];
3008 ivi->max_tx_rate = lio->linfo.link.s.speed;
3009 ivi->min_tx_rate = 0;
3010
3011 return 0;
3012 }
3013
3014 static int liquidio_send_vf_trust_cmd(struct lio *lio, int vfidx, bool trusted)
3015 {
3016 struct octeon_device *oct = lio->oct_dev;
3017 struct octeon_soft_command *sc;
3018 int retval;
3019
3020 sc = octeon_alloc_soft_command(oct, 0, 16, 0);
3021 if (!sc)
3022 return -ENOMEM;
3023
3024 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
3025
3026 /* vfidx is 0 based, but vf_num (param1) is 1 based */
3027 octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
3028 OPCODE_NIC_SET_TRUSTED_VF, 0, vfidx + 1,
3029 trusted);
3030
3031 init_completion(&sc->complete);
3032 sc->sc_status = OCTEON_REQUEST_PENDING;
3033
3034 retval = octeon_send_soft_command(oct, sc);
3035 if (retval == IQ_SEND_FAILED) {
3036 octeon_free_soft_command(oct, sc);
3037 retval = -1;
3038 } else {
3039 /* Wait for response or timeout */
3040 retval = wait_for_sc_completion_timeout(oct, sc, 0);
3041 if (retval)
3042 return (retval);
3043
3044 WRITE_ONCE(sc->caller_is_done, true);
3045 }
3046
3047 return retval;
3048 }
3049
3050 static int liquidio_set_vf_trust(struct net_device *netdev, int vfidx,
3051 bool setting)
3052 {
3053 struct lio *lio = GET_LIO(netdev);
3054 struct octeon_device *oct = lio->oct_dev;
3055
3056 if (strcmp(oct->fw_info.liquidio_firmware_version, "1.7.1") < 0) {
3057 /* trusted vf is not supported by firmware older than 1.7.1 */
3058 return -EOPNOTSUPP;
3059 }
3060
3061 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced) {
3062 netif_info(lio, drv, lio->netdev, "Invalid vfidx %d\n", vfidx);
3063 return -EINVAL;
3064 }
3065
3066 if (setting) {
3067 /* Set */
3068
3069 if (oct->sriov_info.trusted_vf.active &&
3070 oct->sriov_info.trusted_vf.id == vfidx)
3071 return 0;
3072
3073 if (oct->sriov_info.trusted_vf.active) {
3074 netif_info(lio, drv, lio->netdev, "More than one trusted VF is not allowed\n");
3075 return -EPERM;
3076 }
3077 } else {
3078 /* Clear */
3079
3080 if (!oct->sriov_info.trusted_vf.active)
3081 return 0;
3082 }
3083
3084 if (!liquidio_send_vf_trust_cmd(lio, vfidx, setting)) {
3085 if (setting) {
3086 oct->sriov_info.trusted_vf.id = vfidx;
3087 oct->sriov_info.trusted_vf.active = true;
3088 } else {
3089 oct->sriov_info.trusted_vf.active = false;
3090 }
3091
3092 netif_info(lio, drv, lio->netdev, "VF %u is %strusted\n", vfidx,
3093 setting ? "" : "not ");
3094 } else {
3095 netif_info(lio, drv, lio->netdev, "Failed to set VF trusted\n");
3096 return -1;
3097 }
3098
3099 return 0;
3100 }
3101
3102 static int liquidio_set_vf_link_state(struct net_device *netdev, int vfidx,
3103 int linkstate)
3104 {
3105 struct lio *lio = GET_LIO(netdev);
3106 struct octeon_device *oct = lio->oct_dev;
3107 struct octnic_ctrl_pkt nctrl;
3108 int ret = 0;
3109
3110 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced)
3111 return -EINVAL;
3112
3113 if (oct->sriov_info.vf_linkstate[vfidx] == linkstate)
3114 return 0;
3115
3116 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
3117 nctrl.ncmd.s.cmd = OCTNET_CMD_SET_VF_LINKSTATE;
3118 nctrl.ncmd.s.param1 =
3119 vfidx + 1; /* vfidx is 0 based, but vf_num (param1) is 1 based */
3120 nctrl.ncmd.s.param2 = linkstate;
3121 nctrl.ncmd.s.more = 0;
3122 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
3123 nctrl.cb_fn = NULL;
3124
3125 ret = octnet_send_nic_ctrl_pkt(oct, &nctrl);
3126
3127 if (!ret)
3128 oct->sriov_info.vf_linkstate[vfidx] = linkstate;
3129 else if (ret > 0)
3130 ret = -EIO;
3131
3132 return ret;
3133 }
3134
3135 static int
3136 liquidio_eswitch_mode_get(struct devlink *devlink, u16 *mode)
3137 {
3138 struct lio_devlink_priv *priv;
3139 struct octeon_device *oct;
3140
3141 priv = devlink_priv(devlink);
3142 oct = priv->oct;
3143
3144 *mode = oct->eswitch_mode;
3145
3146 return 0;
3147 }
3148
3149 static int
3150 liquidio_eswitch_mode_set(struct devlink *devlink, u16 mode,
3151 struct netlink_ext_ack *extack)
3152 {
3153 struct lio_devlink_priv *priv;
3154 struct octeon_device *oct;
3155 int ret = 0;
3156
3157 priv = devlink_priv(devlink);
3158 oct = priv->oct;
3159
3160 if (!(oct->fw_info.app_cap_flags & LIQUIDIO_SWITCHDEV_CAP))
3161 return -EINVAL;
3162
3163 if (oct->eswitch_mode == mode)
3164 return 0;
3165
3166 switch (mode) {
3167 case DEVLINK_ESWITCH_MODE_SWITCHDEV:
3168 oct->eswitch_mode = mode;
3169 ret = lio_vf_rep_create(oct);
3170 break;
3171
3172 case DEVLINK_ESWITCH_MODE_LEGACY:
3173 lio_vf_rep_destroy(oct);
3174 oct->eswitch_mode = mode;
3175 break;
3176
3177 default:
3178 ret = -EINVAL;
3179 }
3180
3181 return ret;
3182 }
3183
3184 static const struct devlink_ops liquidio_devlink_ops = {
3185 .eswitch_mode_get = liquidio_eswitch_mode_get,
3186 .eswitch_mode_set = liquidio_eswitch_mode_set,
3187 };
3188
3189 static int
3190 liquidio_get_port_parent_id(struct net_device *dev,
3191 struct netdev_phys_item_id *ppid)
3192 {
3193 struct lio *lio = GET_LIO(dev);
3194 struct octeon_device *oct = lio->oct_dev;
3195
3196 if (oct->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV)
3197 return -EOPNOTSUPP;
3198
3199 ppid->id_len = ETH_ALEN;
3200 ether_addr_copy(ppid->id, (void *)&lio->linfo.hw_addr + 2);
3201
3202 return 0;
3203 }
3204
3205 static int liquidio_get_vf_stats(struct net_device *netdev, int vfidx,
3206 struct ifla_vf_stats *vf_stats)
3207 {
3208 struct lio *lio = GET_LIO(netdev);
3209 struct octeon_device *oct = lio->oct_dev;
3210 struct oct_vf_stats stats;
3211 int ret;
3212
3213 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced)
3214 return -EINVAL;
3215
3216 memset(&stats, 0, sizeof(struct oct_vf_stats));
3217 ret = cn23xx_get_vf_stats(oct, vfidx, &stats);
3218 if (!ret) {
3219 vf_stats->rx_packets = stats.rx_packets;
3220 vf_stats->tx_packets = stats.tx_packets;
3221 vf_stats->rx_bytes = stats.rx_bytes;
3222 vf_stats->tx_bytes = stats.tx_bytes;
3223 vf_stats->broadcast = stats.broadcast;
3224 vf_stats->multicast = stats.multicast;
3225 }
3226
3227 return ret;
3228 }
3229
3230 static const struct net_device_ops lionetdevops = {
3231 .ndo_open = liquidio_open,
3232 .ndo_stop = liquidio_stop,
3233 .ndo_start_xmit = liquidio_xmit,
3234 .ndo_get_stats64 = liquidio_get_stats64,
3235 .ndo_set_mac_address = liquidio_set_mac,
3236 .ndo_set_rx_mode = liquidio_set_mcast_list,
3237 .ndo_tx_timeout = liquidio_tx_timeout,
3238
3239 .ndo_vlan_rx_add_vid = liquidio_vlan_rx_add_vid,
3240 .ndo_vlan_rx_kill_vid = liquidio_vlan_rx_kill_vid,
3241 .ndo_change_mtu = liquidio_change_mtu,
3242 .ndo_do_ioctl = liquidio_ioctl,
3243 .ndo_fix_features = liquidio_fix_features,
3244 .ndo_set_features = liquidio_set_features,
3245 .ndo_udp_tunnel_add = liquidio_add_vxlan_port,
3246 .ndo_udp_tunnel_del = liquidio_del_vxlan_port,
3247 .ndo_set_vf_mac = liquidio_set_vf_mac,
3248 .ndo_set_vf_vlan = liquidio_set_vf_vlan,
3249 .ndo_get_vf_config = liquidio_get_vf_config,
3250 .ndo_set_vf_spoofchk = liquidio_set_vf_spoofchk,
3251 .ndo_set_vf_trust = liquidio_set_vf_trust,
3252 .ndo_set_vf_link_state = liquidio_set_vf_link_state,
3253 .ndo_get_vf_stats = liquidio_get_vf_stats,
3254 .ndo_get_port_parent_id = liquidio_get_port_parent_id,
3255 };
3256
3257 /** \brief Entry point for the liquidio module
3258 */
3259 static int __init liquidio_init(void)
3260 {
3261 int i;
3262 struct handshake *hs;
3263
3264 init_completion(&first_stage);
3265
3266 octeon_init_device_list(OCTEON_CONFIG_TYPE_DEFAULT);
3267
3268 if (liquidio_init_pci())
3269 return -EINVAL;
3270
3271 wait_for_completion_timeout(&first_stage, msecs_to_jiffies(1000));
3272
3273 for (i = 0; i < MAX_OCTEON_DEVICES; i++) {
3274 hs = &handshake[i];
3275 if (hs->pci_dev) {
3276 wait_for_completion(&hs->init);
3277 if (!hs->init_ok) {
3278 /* init handshake failed */
3279 dev_err(&hs->pci_dev->dev,
3280 "Failed to init device\n");
3281 liquidio_deinit_pci();
3282 return -EIO;
3283 }
3284 }
3285 }
3286
3287 for (i = 0; i < MAX_OCTEON_DEVICES; i++) {
3288 hs = &handshake[i];
3289 if (hs->pci_dev) {
3290 wait_for_completion_timeout(&hs->started,
3291 msecs_to_jiffies(30000));
3292 if (!hs->started_ok) {
3293 /* starter handshake failed */
3294 dev_err(&hs->pci_dev->dev,
3295 "Firmware failed to start\n");
3296 liquidio_deinit_pci();
3297 return -EIO;
3298 }
3299 }
3300 }
3301
3302 return 0;
3303 }
3304
3305 static int lio_nic_info(struct octeon_recv_info *recv_info, void *buf)
3306 {
3307 struct octeon_device *oct = (struct octeon_device *)buf;
3308 struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt;
3309 int gmxport = 0;
3310 union oct_link_status *ls;
3311 int i;
3312
3313 if (recv_pkt->buffer_size[0] != (sizeof(*ls) + OCT_DROQ_INFO_SIZE)) {
3314 dev_err(&oct->pci_dev->dev, "Malformed NIC_INFO, len=%d, ifidx=%d\n",
3315 recv_pkt->buffer_size[0],
3316 recv_pkt->rh.r_nic_info.gmxport);
3317 goto nic_info_err;
3318 }
3319
3320 gmxport = recv_pkt->rh.r_nic_info.gmxport;
3321 ls = (union oct_link_status *)(get_rbd(recv_pkt->buffer_ptr[0]) +
3322 OCT_DROQ_INFO_SIZE);
3323
3324 octeon_swap_8B_data((u64 *)ls, (sizeof(union oct_link_status)) >> 3);
3325 for (i = 0; i < oct->ifcount; i++) {
3326 if (oct->props[i].gmxport == gmxport) {
3327 update_link_status(oct->props[i].netdev, ls);
3328 break;
3329 }
3330 }
3331
3332 nic_info_err:
3333 for (i = 0; i < recv_pkt->buffer_count; i++)
3334 recv_buffer_free(recv_pkt->buffer_ptr[i]);
3335 octeon_free_recv_info(recv_info);
3336 return 0;
3337 }
3338
3339 /**
3340 * \brief Setup network interfaces
3341 * @param octeon_dev octeon device
3342 *
3343 * Called during init time for each device. It assumes the NIC
3344 * is already up and running. The link information for each
3345 * interface is passed in link_info.
3346 */
3347 static int setup_nic_devices(struct octeon_device *octeon_dev)
3348 {
3349 struct lio *lio = NULL;
3350 struct net_device *netdev;
3351 u8 mac[6], i, j, *fw_ver, *micro_ver;
3352 unsigned long micro;
3353 u32 cur_ver;
3354 struct octeon_soft_command *sc;
3355 struct liquidio_if_cfg_resp *resp;
3356 struct octdev_props *props;
3357 int retval, num_iqueues, num_oqueues;
3358 int max_num_queues = 0;
3359 union oct_nic_if_cfg if_cfg;
3360 unsigned int base_queue;
3361 unsigned int gmx_port_id;
3362 u32 resp_size, data_size;
3363 u32 ifidx_or_pfnum;
3364 struct lio_version *vdata;
3365 struct devlink *devlink;
3366 struct lio_devlink_priv *lio_devlink;
3367
3368 /* This is to handle link status changes */
3369 octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC,
3370 OPCODE_NIC_INFO,
3371 lio_nic_info, octeon_dev);
3372
3373 /* REQTYPE_RESP_NET and REQTYPE_SOFT_COMMAND do not have free functions.
3374 * They are handled directly.
3375 */
3376 octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET,
3377 free_netbuf);
3378
3379 octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET_SG,
3380 free_netsgbuf);
3381
3382 octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_RESP_NET_SG,
3383 free_netsgbuf_with_resp);
3384
3385 for (i = 0; i < octeon_dev->ifcount; i++) {
3386 resp_size = sizeof(struct liquidio_if_cfg_resp);
3387 data_size = sizeof(struct lio_version);
3388 sc = (struct octeon_soft_command *)
3389 octeon_alloc_soft_command(octeon_dev, data_size,
3390 resp_size, 0);
3391 resp = (struct liquidio_if_cfg_resp *)sc->virtrptr;
3392 vdata = (struct lio_version *)sc->virtdptr;
3393
3394 *((u64 *)vdata) = 0;
3395 vdata->major = cpu_to_be16(LIQUIDIO_BASE_MAJOR_VERSION);
3396 vdata->minor = cpu_to_be16(LIQUIDIO_BASE_MINOR_VERSION);
3397 vdata->micro = cpu_to_be16(LIQUIDIO_BASE_MICRO_VERSION);
3398
3399 if (OCTEON_CN23XX_PF(octeon_dev)) {
3400 num_iqueues = octeon_dev->sriov_info.num_pf_rings;
3401 num_oqueues = octeon_dev->sriov_info.num_pf_rings;
3402 base_queue = octeon_dev->sriov_info.pf_srn;
3403
3404 gmx_port_id = octeon_dev->pf_num;
3405 ifidx_or_pfnum = octeon_dev->pf_num;
3406 } else {
3407 num_iqueues = CFG_GET_NUM_TXQS_NIC_IF(
3408 octeon_get_conf(octeon_dev), i);
3409 num_oqueues = CFG_GET_NUM_RXQS_NIC_IF(
3410 octeon_get_conf(octeon_dev), i);
3411 base_queue = CFG_GET_BASE_QUE_NIC_IF(
3412 octeon_get_conf(octeon_dev), i);
3413 gmx_port_id = CFG_GET_GMXID_NIC_IF(
3414 octeon_get_conf(octeon_dev), i);
3415 ifidx_or_pfnum = i;
3416 }
3417
3418 dev_dbg(&octeon_dev->pci_dev->dev,
3419 "requesting config for interface %d, iqs %d, oqs %d\n",
3420 ifidx_or_pfnum, num_iqueues, num_oqueues);
3421
3422 if_cfg.u64 = 0;
3423 if_cfg.s.num_iqueues = num_iqueues;
3424 if_cfg.s.num_oqueues = num_oqueues;
3425 if_cfg.s.base_queue = base_queue;
3426 if_cfg.s.gmx_port_id = gmx_port_id;
3427
3428 sc->iq_no = 0;
3429
3430 octeon_prepare_soft_command(octeon_dev, sc, OPCODE_NIC,
3431 OPCODE_NIC_IF_CFG, 0,
3432 if_cfg.u64, 0);
3433
3434 init_completion(&sc->complete);
3435 sc->sc_status = OCTEON_REQUEST_PENDING;
3436
3437 retval = octeon_send_soft_command(octeon_dev, sc);
3438 if (retval == IQ_SEND_FAILED) {
3439 dev_err(&octeon_dev->pci_dev->dev,
3440 "iq/oq config failed status: %x\n",
3441 retval);
3442 /* Soft instr is freed by driver in case of failure. */
3443 octeon_free_soft_command(octeon_dev, sc);
3444 return(-EIO);
3445 }
3446
3447 /* Sleep on a wait queue till the cond flag indicates that the
3448 * response arrived or timed-out.
3449 */
3450 retval = wait_for_sc_completion_timeout(octeon_dev, sc, 0);
3451 if (retval)
3452 return retval;
3453
3454 retval = resp->status;
3455 if (retval) {
3456 dev_err(&octeon_dev->pci_dev->dev, "iq/oq config failed\n");
3457 WRITE_ONCE(sc->caller_is_done, true);
3458 goto setup_nic_dev_done;
3459 }
3460 snprintf(octeon_dev->fw_info.liquidio_firmware_version,
3461 32, "%s",
3462 resp->cfg_info.liquidio_firmware_version);
3463
3464 /* Verify f/w version (in case of 'auto' loading from flash) */
3465 fw_ver = octeon_dev->fw_info.liquidio_firmware_version;
3466 if (memcmp(LIQUIDIO_BASE_VERSION,
3467 fw_ver,
3468 strlen(LIQUIDIO_BASE_VERSION))) {
3469 dev_err(&octeon_dev->pci_dev->dev,
3470 "Unmatched firmware version. Expected %s.x, got %s.\n",
3471 LIQUIDIO_BASE_VERSION, fw_ver);
3472 WRITE_ONCE(sc->caller_is_done, true);
3473 goto setup_nic_dev_done;
3474 } else if (atomic_read(octeon_dev->adapter_fw_state) ==
3475 FW_IS_PRELOADED) {
3476 dev_info(&octeon_dev->pci_dev->dev,
3477 "Using auto-loaded firmware version %s.\n",
3478 fw_ver);
3479 }
3480
3481 /* extract micro version field; point past '<maj>.<min>.' */
3482 micro_ver = fw_ver + strlen(LIQUIDIO_BASE_VERSION) + 1;
3483 if (kstrtoul(micro_ver, 10, &micro) != 0)
3484 micro = 0;
3485 octeon_dev->fw_info.ver.maj = LIQUIDIO_BASE_MAJOR_VERSION;
3486 octeon_dev->fw_info.ver.min = LIQUIDIO_BASE_MINOR_VERSION;
3487 octeon_dev->fw_info.ver.rev = micro;
3488
3489 octeon_swap_8B_data((u64 *)(&resp->cfg_info),
3490 (sizeof(struct liquidio_if_cfg_info)) >> 3);
3491
3492 num_iqueues = hweight64(resp->cfg_info.iqmask);
3493 num_oqueues = hweight64(resp->cfg_info.oqmask);
3494
3495 if (!(num_iqueues) || !(num_oqueues)) {
3496 dev_err(&octeon_dev->pci_dev->dev,
3497 "Got bad iqueues (%016llx) or oqueues (%016llx) from firmware.\n",
3498 resp->cfg_info.iqmask,
3499 resp->cfg_info.oqmask);
3500 WRITE_ONCE(sc->caller_is_done, true);
3501 goto setup_nic_dev_done;
3502 }
3503
3504 if (OCTEON_CN6XXX(octeon_dev)) {
3505 max_num_queues = CFG_GET_IQ_MAX_Q(CHIP_CONF(octeon_dev,
3506 cn6xxx));
3507 } else if (OCTEON_CN23XX_PF(octeon_dev)) {
3508 max_num_queues = CFG_GET_IQ_MAX_Q(CHIP_CONF(octeon_dev,
3509 cn23xx_pf));
3510 }
3511
3512 dev_dbg(&octeon_dev->pci_dev->dev,
3513 "interface %d, iqmask %016llx, oqmask %016llx, numiqueues %d, numoqueues %d max_num_queues: %d\n",
3514 i, resp->cfg_info.iqmask, resp->cfg_info.oqmask,
3515 num_iqueues, num_oqueues, max_num_queues);
3516 netdev = alloc_etherdev_mq(LIO_SIZE, max_num_queues);
3517
3518 if (!netdev) {
3519 dev_err(&octeon_dev->pci_dev->dev, "Device allocation failed\n");
3520 WRITE_ONCE(sc->caller_is_done, true);
3521 goto setup_nic_dev_done;
3522 }
3523
3524 SET_NETDEV_DEV(netdev, &octeon_dev->pci_dev->dev);
3525
3526 /* Associate the routines that will handle different
3527 * netdev tasks.
3528 */
3529 netdev->netdev_ops = &lionetdevops;
3530
3531 retval = netif_set_real_num_rx_queues(netdev, num_oqueues);
3532 if (retval) {
3533 dev_err(&octeon_dev->pci_dev->dev,
3534 "setting real number rx failed\n");
3535 WRITE_ONCE(sc->caller_is_done, true);
3536 goto setup_nic_dev_free;
3537 }
3538
3539 retval = netif_set_real_num_tx_queues(netdev, num_iqueues);
3540 if (retval) {
3541 dev_err(&octeon_dev->pci_dev->dev,
3542 "setting real number tx failed\n");
3543 WRITE_ONCE(sc->caller_is_done, true);
3544 goto setup_nic_dev_free;
3545 }
3546
3547 lio = GET_LIO(netdev);
3548
3549 memset(lio, 0, sizeof(struct lio));
3550
3551 lio->ifidx = ifidx_or_pfnum;
3552
3553 props = &octeon_dev->props[i];
3554 props->gmxport = resp->cfg_info.linfo.gmxport;
3555 props->netdev = netdev;
3556
3557 lio->linfo.num_rxpciq = num_oqueues;
3558 lio->linfo.num_txpciq = num_iqueues;
3559 for (j = 0; j < num_oqueues; j++) {
3560 lio->linfo.rxpciq[j].u64 =
3561 resp->cfg_info.linfo.rxpciq[j].u64;
3562 }
3563 for (j = 0; j < num_iqueues; j++) {
3564 lio->linfo.txpciq[j].u64 =
3565 resp->cfg_info.linfo.txpciq[j].u64;
3566 }
3567 lio->linfo.hw_addr = resp->cfg_info.linfo.hw_addr;
3568 lio->linfo.gmxport = resp->cfg_info.linfo.gmxport;
3569 lio->linfo.link.u64 = resp->cfg_info.linfo.link.u64;
3570
3571 WRITE_ONCE(sc->caller_is_done, true);
3572
3573 lio->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
3574
3575 if (OCTEON_CN23XX_PF(octeon_dev) ||
3576 OCTEON_CN6XXX(octeon_dev)) {
3577 lio->dev_capability = NETIF_F_HIGHDMA
3578 | NETIF_F_IP_CSUM
3579 | NETIF_F_IPV6_CSUM
3580 | NETIF_F_SG | NETIF_F_RXCSUM
3581 | NETIF_F_GRO
3582 | NETIF_F_TSO | NETIF_F_TSO6
3583 | NETIF_F_LRO;
3584 }
3585 netif_set_gso_max_size(netdev, OCTNIC_GSO_MAX_SIZE);
3586
3587 /* Copy of transmit encapsulation capabilities:
3588 * TSO, TSO6, Checksums for this device
3589 */
3590 lio->enc_dev_capability = NETIF_F_IP_CSUM
3591 | NETIF_F_IPV6_CSUM
3592 | NETIF_F_GSO_UDP_TUNNEL
3593 | NETIF_F_HW_CSUM | NETIF_F_SG
3594 | NETIF_F_RXCSUM
3595 | NETIF_F_TSO | NETIF_F_TSO6
3596 | NETIF_F_LRO;
3597
3598 netdev->hw_enc_features = (lio->enc_dev_capability &
3599 ~NETIF_F_LRO);
3600
3601 lio->dev_capability |= NETIF_F_GSO_UDP_TUNNEL;
3602
3603 netdev->vlan_features = lio->dev_capability;
3604 /* Add any unchangeable hw features */
3605 lio->dev_capability |= NETIF_F_HW_VLAN_CTAG_FILTER |
3606 NETIF_F_HW_VLAN_CTAG_RX |
3607 NETIF_F_HW_VLAN_CTAG_TX;
3608
3609 netdev->features = (lio->dev_capability & ~NETIF_F_LRO);
3610
3611 netdev->hw_features = lio->dev_capability;
3612 /*HW_VLAN_RX and HW_VLAN_FILTER is always on*/
3613 netdev->hw_features = netdev->hw_features &
3614 ~NETIF_F_HW_VLAN_CTAG_RX;
3615
3616 /* MTU range: 68 - 16000 */
3617 netdev->min_mtu = LIO_MIN_MTU_SIZE;
3618 netdev->max_mtu = LIO_MAX_MTU_SIZE;
3619
3620 /* Point to the properties for octeon device to which this
3621 * interface belongs.
3622 */
3623 lio->oct_dev = octeon_dev;
3624 lio->octprops = props;
3625 lio->netdev = netdev;
3626
3627 dev_dbg(&octeon_dev->pci_dev->dev,
3628 "if%d gmx: %d hw_addr: 0x%llx\n", i,
3629 lio->linfo.gmxport, CVM_CAST64(lio->linfo.hw_addr));
3630
3631 for (j = 0; j < octeon_dev->sriov_info.max_vfs; j++) {
3632 u8 vfmac[ETH_ALEN];
3633
3634 eth_random_addr(vfmac);
3635 if (__liquidio_set_vf_mac(netdev, j, vfmac, false)) {
3636 dev_err(&octeon_dev->pci_dev->dev,
3637 "Error setting VF%d MAC address\n",
3638 j);
3639 goto setup_nic_dev_free;
3640 }
3641 }
3642
3643 /* 64-bit swap required on LE machines */
3644 octeon_swap_8B_data(&lio->linfo.hw_addr, 1);
3645 for (j = 0; j < 6; j++)
3646 mac[j] = *((u8 *)(((u8 *)&lio->linfo.hw_addr) + 2 + j));
3647
3648 /* Copy MAC Address to OS network device structure */
3649
3650 ether_addr_copy(netdev->dev_addr, mac);
3651
3652 /* By default all interfaces on a single Octeon uses the same
3653 * tx and rx queues
3654 */
3655 lio->txq = lio->linfo.txpciq[0].s.q_no;
3656 lio->rxq = lio->linfo.rxpciq[0].s.q_no;
3657 if (liquidio_setup_io_queues(octeon_dev, i,
3658 lio->linfo.num_txpciq,
3659 lio->linfo.num_rxpciq)) {
3660 dev_err(&octeon_dev->pci_dev->dev, "I/O queues creation failed\n");
3661 goto setup_nic_dev_free;
3662 }
3663
3664 ifstate_set(lio, LIO_IFSTATE_DROQ_OPS);
3665
3666 lio->tx_qsize = octeon_get_tx_qsize(octeon_dev, lio->txq);
3667 lio->rx_qsize = octeon_get_rx_qsize(octeon_dev, lio->rxq);
3668
3669 if (lio_setup_glists(octeon_dev, lio, num_iqueues)) {
3670 dev_err(&octeon_dev->pci_dev->dev,
3671 "Gather list allocation failed\n");
3672 goto setup_nic_dev_free;
3673 }
3674
3675 /* Register ethtool support */
3676 liquidio_set_ethtool_ops(netdev);
3677 if (lio->oct_dev->chip_id == OCTEON_CN23XX_PF_VID)
3678 octeon_dev->priv_flags = OCT_PRIV_FLAG_DEFAULT;
3679 else
3680 octeon_dev->priv_flags = 0x0;
3681
3682 if (netdev->features & NETIF_F_LRO)
3683 liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE,
3684 OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
3685
3686 liquidio_set_feature(netdev, OCTNET_CMD_VLAN_FILTER_CTL,
3687 OCTNET_CMD_VLAN_FILTER_ENABLE);
3688
3689 if ((debug != -1) && (debug & NETIF_MSG_HW))
3690 liquidio_set_feature(netdev,
3691 OCTNET_CMD_VERBOSE_ENABLE, 0);
3692
3693 if (setup_link_status_change_wq(netdev))
3694 goto setup_nic_dev_free;
3695
3696 if ((octeon_dev->fw_info.app_cap_flags &
3697 LIQUIDIO_TIME_SYNC_CAP) &&
3698 setup_sync_octeon_time_wq(netdev))
3699 goto setup_nic_dev_free;
3700
3701 if (setup_rx_oom_poll_fn(netdev))
3702 goto setup_nic_dev_free;
3703
3704 /* Register the network device with the OS */
3705 if (register_netdev(netdev)) {
3706 dev_err(&octeon_dev->pci_dev->dev, "Device registration failed\n");
3707 goto setup_nic_dev_free;
3708 }
3709
3710 dev_dbg(&octeon_dev->pci_dev->dev,
3711 "Setup NIC ifidx:%d mac:%02x%02x%02x%02x%02x%02x\n",
3712 i, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
3713 netif_carrier_off(netdev);
3714 lio->link_changes++;
3715
3716 ifstate_set(lio, LIO_IFSTATE_REGISTERED);
3717
3718 /* Sending command to firmware to enable Rx checksum offload
3719 * by default at the time of setup of Liquidio driver for
3720 * this device
3721 */
3722 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
3723 OCTNET_CMD_RXCSUM_ENABLE);
3724 liquidio_set_feature(netdev, OCTNET_CMD_TNL_TX_CSUM_CTL,
3725 OCTNET_CMD_TXCSUM_ENABLE);
3726
3727 dev_dbg(&octeon_dev->pci_dev->dev,
3728 "NIC ifidx:%d Setup successful\n", i);
3729
3730 if (octeon_dev->subsystem_id ==
3731 OCTEON_CN2350_25GB_SUBSYS_ID ||
3732 octeon_dev->subsystem_id ==
3733 OCTEON_CN2360_25GB_SUBSYS_ID) {
3734 cur_ver = OCT_FW_VER(octeon_dev->fw_info.ver.maj,
3735 octeon_dev->fw_info.ver.min,
3736 octeon_dev->fw_info.ver.rev);
3737
3738 /* speed control unsupported in f/w older than 1.7.2 */
3739 if (cur_ver < OCT_FW_VER(1, 7, 2)) {
3740 dev_info(&octeon_dev->pci_dev->dev,
3741 "speed setting not supported by f/w.");
3742 octeon_dev->speed_setting = 25;
3743 octeon_dev->no_speed_setting = 1;
3744 } else {
3745 liquidio_get_speed(lio);
3746 }
3747
3748 if (octeon_dev->speed_setting == 0) {
3749 octeon_dev->speed_setting = 25;
3750 octeon_dev->no_speed_setting = 1;
3751 }
3752 } else {
3753 octeon_dev->no_speed_setting = 1;
3754 octeon_dev->speed_setting = 10;
3755 }
3756 octeon_dev->speed_boot = octeon_dev->speed_setting;
3757
3758 /* don't read FEC setting if unsupported by f/w (see above) */
3759 if (octeon_dev->speed_boot == 25 &&
3760 !octeon_dev->no_speed_setting) {
3761 liquidio_get_fec(lio);
3762 octeon_dev->props[lio->ifidx].fec_boot =
3763 octeon_dev->props[lio->ifidx].fec;
3764 }
3765 }
3766
3767 devlink = devlink_alloc(&liquidio_devlink_ops,
3768 sizeof(struct lio_devlink_priv));
3769 if (!devlink) {
3770 dev_err(&octeon_dev->pci_dev->dev, "devlink alloc failed\n");
3771 goto setup_nic_dev_free;
3772 }
3773
3774 lio_devlink = devlink_priv(devlink);
3775 lio_devlink->oct = octeon_dev;
3776
3777 if (devlink_register(devlink, &octeon_dev->pci_dev->dev)) {
3778 devlink_free(devlink);
3779 dev_err(&octeon_dev->pci_dev->dev,
3780 "devlink registration failed\n");
3781 goto setup_nic_dev_free;
3782 }
3783
3784 octeon_dev->devlink = devlink;
3785 octeon_dev->eswitch_mode = DEVLINK_ESWITCH_MODE_LEGACY;
3786
3787 return 0;
3788
3789 setup_nic_dev_free:
3790
3791 while (i--) {
3792 dev_err(&octeon_dev->pci_dev->dev,
3793 "NIC ifidx:%d Setup failed\n", i);
3794 liquidio_destroy_nic_device(octeon_dev, i);
3795 }
3796
3797 setup_nic_dev_done:
3798
3799 return -ENODEV;
3800 }
3801
3802 #ifdef CONFIG_PCI_IOV
3803 static int octeon_enable_sriov(struct octeon_device *oct)
3804 {
3805 unsigned int num_vfs_alloced = oct->sriov_info.num_vfs_alloced;
3806 struct pci_dev *vfdev;
3807 int err;
3808 u32 u;
3809
3810 if (OCTEON_CN23XX_PF(oct) && num_vfs_alloced) {
3811 err = pci_enable_sriov(oct->pci_dev,
3812 oct->sriov_info.num_vfs_alloced);
3813 if (err) {
3814 dev_err(&oct->pci_dev->dev,
3815 "OCTEON: Failed to enable PCI sriov: %d\n",
3816 err);
3817 oct->sriov_info.num_vfs_alloced = 0;
3818 return err;
3819 }
3820 oct->sriov_info.sriov_enabled = 1;
3821
3822 /* init lookup table that maps DPI ring number to VF pci_dev
3823 * struct pointer
3824 */
3825 u = 0;
3826 vfdev = pci_get_device(PCI_VENDOR_ID_CAVIUM,
3827 OCTEON_CN23XX_VF_VID, NULL);
3828 while (vfdev) {
3829 if (vfdev->is_virtfn &&
3830 (vfdev->physfn == oct->pci_dev)) {
3831 oct->sriov_info.dpiring_to_vfpcidev_lut[u] =
3832 vfdev;
3833 u += oct->sriov_info.rings_per_vf;
3834 }
3835 vfdev = pci_get_device(PCI_VENDOR_ID_CAVIUM,
3836 OCTEON_CN23XX_VF_VID, vfdev);
3837 }
3838 }
3839
3840 return num_vfs_alloced;
3841 }
3842
3843 static int lio_pci_sriov_disable(struct octeon_device *oct)
3844 {
3845 int u;
3846
3847 if (pci_vfs_assigned(oct->pci_dev)) {
3848 dev_err(&oct->pci_dev->dev, "VFs are still assigned to VMs.\n");
3849 return -EPERM;
3850 }
3851
3852 pci_disable_sriov(oct->pci_dev);
3853
3854 u = 0;
3855 while (u < MAX_POSSIBLE_VFS) {
3856 oct->sriov_info.dpiring_to_vfpcidev_lut[u] = NULL;
3857 u += oct->sriov_info.rings_per_vf;
3858 }
3859
3860 oct->sriov_info.num_vfs_alloced = 0;
3861 dev_info(&oct->pci_dev->dev, "oct->pf_num:%d disabled VFs\n",
3862 oct->pf_num);
3863
3864 return 0;
3865 }
3866
3867 static int liquidio_enable_sriov(struct pci_dev *dev, int num_vfs)
3868 {
3869 struct octeon_device *oct = pci_get_drvdata(dev);
3870 int ret = 0;
3871
3872 if ((num_vfs == oct->sriov_info.num_vfs_alloced) &&
3873 (oct->sriov_info.sriov_enabled)) {
3874 dev_info(&oct->pci_dev->dev, "oct->pf_num:%d already enabled num_vfs:%d\n",
3875 oct->pf_num, num_vfs);
3876 return 0;
3877 }
3878
3879 if (!num_vfs) {
3880 lio_vf_rep_destroy(oct);
3881 ret = lio_pci_sriov_disable(oct);
3882 } else if (num_vfs > oct->sriov_info.max_vfs) {
3883 dev_err(&oct->pci_dev->dev,
3884 "OCTEON: Max allowed VFs:%d user requested:%d",
3885 oct->sriov_info.max_vfs, num_vfs);
3886 ret = -EPERM;
3887 } else {
3888 oct->sriov_info.num_vfs_alloced = num_vfs;
3889 ret = octeon_enable_sriov(oct);
3890 dev_info(&oct->pci_dev->dev, "oct->pf_num:%d num_vfs:%d\n",
3891 oct->pf_num, num_vfs);
3892 ret = lio_vf_rep_create(oct);
3893 if (ret)
3894 dev_info(&oct->pci_dev->dev,
3895 "vf representor create failed");
3896 }
3897
3898 return ret;
3899 }
3900 #endif
3901
3902 /**
3903 * \brief initialize the NIC
3904 * @param oct octeon device
3905 *
3906 * This initialization routine is called once the Octeon device application is
3907 * up and running
3908 */
3909 static int liquidio_init_nic_module(struct octeon_device *oct)
3910 {
3911 int i, retval = 0;
3912 int num_nic_ports = CFG_GET_NUM_NIC_PORTS(octeon_get_conf(oct));
3913
3914 dev_dbg(&oct->pci_dev->dev, "Initializing network interfaces\n");
3915
3916 /* only default iq and oq were initialized
3917 * initialize the rest as well
3918 */
3919 /* run port_config command for each port */
3920 oct->ifcount = num_nic_ports;
3921
3922 memset(oct->props, 0, sizeof(struct octdev_props) * num_nic_ports);
3923
3924 for (i = 0; i < MAX_OCTEON_LINKS; i++)
3925 oct->props[i].gmxport = -1;
3926
3927 retval = setup_nic_devices(oct);
3928 if (retval) {
3929 dev_err(&oct->pci_dev->dev, "Setup NIC devices failed\n");
3930 goto octnet_init_failure;
3931 }
3932
3933 /* Call vf_rep_modinit if the firmware is switchdev capable
3934 * and do it from the first liquidio function probed.
3935 */
3936 if (!oct->octeon_id &&
3937 oct->fw_info.app_cap_flags & LIQUIDIO_SWITCHDEV_CAP) {
3938 retval = lio_vf_rep_modinit();
3939 if (retval) {
3940 liquidio_stop_nic_module(oct);
3941 goto octnet_init_failure;
3942 }
3943 }
3944
3945 liquidio_ptp_init(oct);
3946
3947 dev_dbg(&oct->pci_dev->dev, "Network interfaces ready\n");
3948
3949 return retval;
3950
3951 octnet_init_failure:
3952
3953 oct->ifcount = 0;
3954
3955 return retval;
3956 }
3957
3958 /**
3959 * \brief starter callback that invokes the remaining initialization work after
3960 * the NIC is up and running.
3961 * @param octptr work struct work_struct
3962 */
3963 static void nic_starter(struct work_struct *work)
3964 {
3965 struct octeon_device *oct;
3966 struct cavium_wk *wk = (struct cavium_wk *)work;
3967
3968 oct = (struct octeon_device *)wk->ctxptr;
3969
3970 if (atomic_read(&oct->status) == OCT_DEV_RUNNING)
3971 return;
3972
3973 /* If the status of the device is CORE_OK, the core
3974 * application has reported its application type. Call
3975 * any registered handlers now and move to the RUNNING
3976 * state.
3977 */
3978 if (atomic_read(&oct->status) != OCT_DEV_CORE_OK) {
3979 schedule_delayed_work(&oct->nic_poll_work.work,
3980 LIQUIDIO_STARTER_POLL_INTERVAL_MS);
3981 return;
3982 }
3983
3984 atomic_set(&oct->status, OCT_DEV_RUNNING);
3985
3986 if (oct->app_mode && oct->app_mode == CVM_DRV_NIC_APP) {
3987 dev_dbg(&oct->pci_dev->dev, "Starting NIC module\n");
3988
3989 if (liquidio_init_nic_module(oct))
3990 dev_err(&oct->pci_dev->dev, "NIC initialization failed\n");
3991 else
3992 handshake[oct->octeon_id].started_ok = 1;
3993 } else {
3994 dev_err(&oct->pci_dev->dev,
3995 "Unexpected application running on NIC (%d). Check firmware.\n",
3996 oct->app_mode);
3997 }
3998
3999 complete(&handshake[oct->octeon_id].started);
4000 }
4001
4002 static int
4003 octeon_recv_vf_drv_notice(struct octeon_recv_info *recv_info, void *buf)
4004 {
4005 struct octeon_device *oct = (struct octeon_device *)buf;
4006 struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt;
4007 int i, notice, vf_idx;
4008 bool cores_crashed;
4009 u64 *data, vf_num;
4010
4011 notice = recv_pkt->rh.r.ossp;
4012 data = (u64 *)(get_rbd(recv_pkt->buffer_ptr[0]) + OCT_DROQ_INFO_SIZE);
4013
4014 /* the first 64-bit word of data is the vf_num */
4015 vf_num = data[0];
4016 octeon_swap_8B_data(&vf_num, 1);
4017 vf_idx = (int)vf_num - 1;
4018
4019 cores_crashed = READ_ONCE(oct->cores_crashed);
4020
4021 if (notice == VF_DRV_LOADED) {
4022 if (!(oct->sriov_info.vf_drv_loaded_mask & BIT_ULL(vf_idx))) {
4023 oct->sriov_info.vf_drv_loaded_mask |= BIT_ULL(vf_idx);
4024 dev_info(&oct->pci_dev->dev,
4025 "driver for VF%d was loaded\n", vf_idx);
4026 if (!cores_crashed)
4027 try_module_get(THIS_MODULE);
4028 }
4029 } else if (notice == VF_DRV_REMOVED) {
4030 if (oct->sriov_info.vf_drv_loaded_mask & BIT_ULL(vf_idx)) {
4031 oct->sriov_info.vf_drv_loaded_mask &= ~BIT_ULL(vf_idx);
4032 dev_info(&oct->pci_dev->dev,
4033 "driver for VF%d was removed\n", vf_idx);
4034 if (!cores_crashed)
4035 module_put(THIS_MODULE);
4036 }
4037 } else if (notice == VF_DRV_MACADDR_CHANGED) {
4038 u8 *b = (u8 *)&data[1];
4039
4040 oct->sriov_info.vf_macaddr[vf_idx] = data[1];
4041 dev_info(&oct->pci_dev->dev,
4042 "VF driver changed VF%d's MAC address to %pM\n",
4043 vf_idx, b + 2);
4044 }
4045
4046 for (i = 0; i < recv_pkt->buffer_count; i++)
4047 recv_buffer_free(recv_pkt->buffer_ptr[i]);
4048 octeon_free_recv_info(recv_info);
4049
4050 return 0;
4051 }
4052
4053 /**
4054 * \brief Device initialization for each Octeon device that is probed
4055 * @param octeon_dev octeon device
4056 */
4057 static int octeon_device_init(struct octeon_device *octeon_dev)
4058 {
4059 int j, ret;
4060 char bootcmd[] = "\n";
4061 char *dbg_enb = NULL;
4062 enum lio_fw_state fw_state;
4063 struct octeon_device_priv *oct_priv =
4064 (struct octeon_device_priv *)octeon_dev->priv;
4065 atomic_set(&octeon_dev->status, OCT_DEV_BEGIN_STATE);
4066
4067 /* Enable access to the octeon device and make its DMA capability
4068 * known to the OS.
4069 */
4070 if (octeon_pci_os_setup(octeon_dev))
4071 return 1;
4072
4073 atomic_set(&octeon_dev->status, OCT_DEV_PCI_ENABLE_DONE);
4074
4075 /* Identify the Octeon type and map the BAR address space. */
4076 if (octeon_chip_specific_setup(octeon_dev)) {
4077 dev_err(&octeon_dev->pci_dev->dev, "Chip specific setup failed\n");
4078 return 1;
4079 }
4080
4081 atomic_set(&octeon_dev->status, OCT_DEV_PCI_MAP_DONE);
4082
4083 /* Only add a reference after setting status 'OCT_DEV_PCI_MAP_DONE',
4084 * since that is what is required for the reference to be removed
4085 * during de-initialization (see 'octeon_destroy_resources').
4086 */
4087 octeon_register_device(octeon_dev, octeon_dev->pci_dev->bus->number,
4088 PCI_SLOT(octeon_dev->pci_dev->devfn),
4089 PCI_FUNC(octeon_dev->pci_dev->devfn),
4090 true);
4091
4092 octeon_dev->app_mode = CVM_DRV_INVALID_APP;
4093
4094 /* CN23XX supports preloaded firmware if the following is true:
4095 *
4096 * The adapter indicates that firmware is currently running AND
4097 * 'fw_type' is 'auto'.
4098 *
4099 * (default state is NEEDS_TO_BE_LOADED, override it if appropriate).
4100 */
4101 if (OCTEON_CN23XX_PF(octeon_dev) &&
4102 cn23xx_fw_loaded(octeon_dev) && fw_type_is_auto()) {
4103 atomic_cmpxchg(octeon_dev->adapter_fw_state,
4104 FW_NEEDS_TO_BE_LOADED, FW_IS_PRELOADED);
4105 }
4106
4107 /* If loading firmware, only first device of adapter needs to do so. */
4108 fw_state = atomic_cmpxchg(octeon_dev->adapter_fw_state,
4109 FW_NEEDS_TO_BE_LOADED,
4110 FW_IS_BEING_LOADED);
4111
4112 /* Here, [local variable] 'fw_state' is set to one of:
4113 *
4114 * FW_IS_PRELOADED: No firmware is to be loaded (see above)
4115 * FW_NEEDS_TO_BE_LOADED: The driver's first instance will load
4116 * firmware to the adapter.
4117 * FW_IS_BEING_LOADED: The driver's second instance will not load
4118 * firmware to the adapter.
4119 */
4120
4121 /* Prior to f/w load, perform a soft reset of the Octeon device;
4122 * if error resetting, return w/error.
4123 */
4124 if (fw_state == FW_NEEDS_TO_BE_LOADED)
4125 if (octeon_dev->fn_list.soft_reset(octeon_dev))
4126 return 1;
4127
4128 /* Initialize the dispatch mechanism used to push packets arriving on
4129 * Octeon Output queues.
4130 */
4131 if (octeon_init_dispatch_list(octeon_dev))
4132 return 1;
4133
4134 octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC,
4135 OPCODE_NIC_CORE_DRV_ACTIVE,
4136 octeon_core_drv_init,
4137 octeon_dev);
4138
4139 octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC,
4140 OPCODE_NIC_VF_DRV_NOTICE,
4141 octeon_recv_vf_drv_notice, octeon_dev);
4142 INIT_DELAYED_WORK(&octeon_dev->nic_poll_work.work, nic_starter);
4143 octeon_dev->nic_poll_work.ctxptr = (void *)octeon_dev;
4144 schedule_delayed_work(&octeon_dev->nic_poll_work.work,
4145 LIQUIDIO_STARTER_POLL_INTERVAL_MS);
4146
4147 atomic_set(&octeon_dev->status, OCT_DEV_DISPATCH_INIT_DONE);
4148
4149 if (octeon_set_io_queues_off(octeon_dev)) {
4150 dev_err(&octeon_dev->pci_dev->dev, "setting io queues off failed\n");
4151 return 1;
4152 }
4153
4154 if (OCTEON_CN23XX_PF(octeon_dev)) {
4155 ret = octeon_dev->fn_list.setup_device_regs(octeon_dev);
4156 if (ret) {
4157 dev_err(&octeon_dev->pci_dev->dev, "OCTEON: Failed to configure device registers\n");
4158 return ret;
4159 }
4160 }
4161
4162 /* Initialize soft command buffer pool
4163 */
4164 if (octeon_setup_sc_buffer_pool(octeon_dev)) {
4165 dev_err(&octeon_dev->pci_dev->dev, "sc buffer pool allocation failed\n");
4166 return 1;
4167 }
4168 atomic_set(&octeon_dev->status, OCT_DEV_SC_BUFF_POOL_INIT_DONE);
4169
4170 /* Setup the data structures that manage this Octeon's Input queues. */
4171 if (octeon_setup_instr_queues(octeon_dev)) {
4172 dev_err(&octeon_dev->pci_dev->dev,
4173 "instruction queue initialization failed\n");
4174 return 1;
4175 }
4176 atomic_set(&octeon_dev->status, OCT_DEV_INSTR_QUEUE_INIT_DONE);
4177
4178 /* Initialize lists to manage the requests of different types that
4179 * arrive from user & kernel applications for this octeon device.
4180 */
4181 if (octeon_setup_response_list(octeon_dev)) {
4182 dev_err(&octeon_dev->pci_dev->dev, "Response list allocation failed\n");
4183 return 1;
4184 }
4185 atomic_set(&octeon_dev->status, OCT_DEV_RESP_LIST_INIT_DONE);
4186
4187 if (octeon_setup_output_queues(octeon_dev)) {
4188 dev_err(&octeon_dev->pci_dev->dev, "Output queue initialization failed\n");
4189 return 1;
4190 }
4191
4192 atomic_set(&octeon_dev->status, OCT_DEV_DROQ_INIT_DONE);
4193
4194 if (OCTEON_CN23XX_PF(octeon_dev)) {
4195 if (octeon_dev->fn_list.setup_mbox(octeon_dev)) {
4196 dev_err(&octeon_dev->pci_dev->dev, "OCTEON: Mailbox setup failed\n");
4197 return 1;
4198 }
4199 atomic_set(&octeon_dev->status, OCT_DEV_MBOX_SETUP_DONE);
4200
4201 if (octeon_allocate_ioq_vector
4202 (octeon_dev,
4203 octeon_dev->sriov_info.num_pf_rings)) {
4204 dev_err(&octeon_dev->pci_dev->dev, "OCTEON: ioq vector allocation failed\n");
4205 return 1;
4206 }
4207 atomic_set(&octeon_dev->status, OCT_DEV_MSIX_ALLOC_VECTOR_DONE);
4208
4209 } else {
4210 /* The input and output queue registers were setup earlier (the
4211 * queues were not enabled). Any additional registers
4212 * that need to be programmed should be done now.
4213 */
4214 ret = octeon_dev->fn_list.setup_device_regs(octeon_dev);
4215 if (ret) {
4216 dev_err(&octeon_dev->pci_dev->dev,
4217 "Failed to configure device registers\n");
4218 return ret;
4219 }
4220 }
4221
4222 /* Initialize the tasklet that handles output queue packet processing.*/
4223 dev_dbg(&octeon_dev->pci_dev->dev, "Initializing droq tasklet\n");
4224 tasklet_init(&oct_priv->droq_tasklet, octeon_droq_bh,
4225 (unsigned long)octeon_dev);
4226
4227 /* Setup the interrupt handler and record the INT SUM register address
4228 */
4229 if (octeon_setup_interrupt(octeon_dev,
4230 octeon_dev->sriov_info.num_pf_rings))
4231 return 1;
4232
4233 /* Enable Octeon device interrupts */
4234 octeon_dev->fn_list.enable_interrupt(octeon_dev, OCTEON_ALL_INTR);
4235
4236 atomic_set(&octeon_dev->status, OCT_DEV_INTR_SET_DONE);
4237
4238 /* Send Credit for Octeon Output queues. Credits are always sent BEFORE
4239 * the output queue is enabled.
4240 * This ensures that we'll receive the f/w CORE DRV_ACTIVE message in
4241 * case we've configured CN23XX_SLI_GBL_CONTROL[NOPTR_D] = 0.
4242 * Otherwise, it is possible that the DRV_ACTIVE message will be sent
4243 * before any credits have been issued, causing the ring to be reset
4244 * (and the f/w appear to never have started).
4245 */
4246 for (j = 0; j < octeon_dev->num_oqs; j++)
4247 writel(octeon_dev->droq[j]->max_count,
4248 octeon_dev->droq[j]->pkts_credit_reg);
4249
4250 /* Enable the input and output queues for this Octeon device */
4251 ret = octeon_dev->fn_list.enable_io_queues(octeon_dev);
4252 if (ret) {
4253 dev_err(&octeon_dev->pci_dev->dev, "Failed to enable input/output queues");
4254 return ret;
4255 }
4256
4257 atomic_set(&octeon_dev->status, OCT_DEV_IO_QUEUES_DONE);
4258
4259 if (fw_state == FW_NEEDS_TO_BE_LOADED) {
4260 dev_dbg(&octeon_dev->pci_dev->dev, "Waiting for DDR initialization...\n");
4261 if (!ddr_timeout) {
4262 dev_info(&octeon_dev->pci_dev->dev,
4263 "WAITING. Set ddr_timeout to non-zero value to proceed with initialization.\n");
4264 }
4265
4266 schedule_timeout_uninterruptible(HZ * LIO_RESET_SECS);
4267
4268 /* Wait for the octeon to initialize DDR after the soft-reset.*/
4269 while (!ddr_timeout) {
4270 set_current_state(TASK_INTERRUPTIBLE);
4271 if (schedule_timeout(HZ / 10)) {
4272 /* user probably pressed Control-C */
4273 return 1;
4274 }
4275 }
4276 ret = octeon_wait_for_ddr_init(octeon_dev, &ddr_timeout);
4277 if (ret) {
4278 dev_err(&octeon_dev->pci_dev->dev,
4279 "DDR not initialized. Please confirm that board is configured to boot from Flash, ret: %d\n",
4280 ret);
4281 return 1;
4282 }
4283
4284 if (octeon_wait_for_bootloader(octeon_dev, 1000)) {
4285 dev_err(&octeon_dev->pci_dev->dev, "Board not responding\n");
4286 return 1;
4287 }
4288
4289 /* Divert uboot to take commands from host instead. */
4290 ret = octeon_console_send_cmd(octeon_dev, bootcmd, 50);
4291
4292 dev_dbg(&octeon_dev->pci_dev->dev, "Initializing consoles\n");
4293 ret = octeon_init_consoles(octeon_dev);
4294 if (ret) {
4295 dev_err(&octeon_dev->pci_dev->dev, "Could not access board consoles\n");
4296 return 1;
4297 }
4298 /* If console debug enabled, specify empty string to use default
4299 * enablement ELSE specify NULL string for 'disabled'.
4300 */
4301 dbg_enb = octeon_console_debug_enabled(0) ? "" : NULL;
4302 ret = octeon_add_console(octeon_dev, 0, dbg_enb);
4303 if (ret) {
4304 dev_err(&octeon_dev->pci_dev->dev, "Could not access board console\n");
4305 return 1;
4306 } else if (octeon_console_debug_enabled(0)) {
4307 /* If console was added AND we're logging console output
4308 * then set our console print function.
4309 */
4310 octeon_dev->console[0].print = octeon_dbg_console_print;
4311 }
4312
4313 atomic_set(&octeon_dev->status, OCT_DEV_CONSOLE_INIT_DONE);
4314
4315 dev_dbg(&octeon_dev->pci_dev->dev, "Loading firmware\n");
4316 ret = load_firmware(octeon_dev);
4317 if (ret) {
4318 dev_err(&octeon_dev->pci_dev->dev, "Could not load firmware to board\n");
4319 return 1;
4320 }
4321
4322 atomic_set(octeon_dev->adapter_fw_state, FW_HAS_BEEN_LOADED);
4323 }
4324
4325 handshake[octeon_dev->octeon_id].init_ok = 1;
4326 complete(&handshake[octeon_dev->octeon_id].init);
4327
4328 atomic_set(&octeon_dev->status, OCT_DEV_HOST_OK);
4329
4330 return 0;
4331 }
4332
4333 /**
4334 * \brief Debug console print function
4335 * @param octeon_dev octeon device
4336 * @param console_num console number
4337 * @param prefix first portion of line to display
4338 * @param suffix second portion of line to display
4339 *
4340 * The OCTEON debug console outputs entire lines (excluding '\n').
4341 * Normally, the line will be passed in the 'prefix' parameter.
4342 * However, due to buffering, it is possible for a line to be split into two
4343 * parts, in which case they will be passed as the 'prefix' parameter and
4344 * 'suffix' parameter.
4345 */
4346 static int octeon_dbg_console_print(struct octeon_device *oct, u32 console_num,
4347 char *prefix, char *suffix)
4348 {
4349 if (prefix && suffix)
4350 dev_info(&oct->pci_dev->dev, "%u: %s%s\n", console_num, prefix,
4351 suffix);
4352 else if (prefix)
4353 dev_info(&oct->pci_dev->dev, "%u: %s\n", console_num, prefix);
4354 else if (suffix)
4355 dev_info(&oct->pci_dev->dev, "%u: %s\n", console_num, suffix);
4356
4357 return 0;
4358 }
4359
4360 /**
4361 * \brief Exits the module
4362 */
4363 static void __exit liquidio_exit(void)
4364 {
4365 liquidio_deinit_pci();
4366
4367 pr_info("LiquidIO network module is now unloaded\n");
4368 }
4369
4370 module_init(liquidio_init);
4371 module_exit(liquidio_exit);
Linux with added FPC-III support