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/pci.h>
19 #include <linux/if_vlan.h>
20 #include "liquidio_common.h"
21 #include "octeon_droq.h"
22 #include "octeon_iq.h"
23 #include "response_manager.h"
24 #include "octeon_device.h"
25 #include "octeon_nic.h"
26 #include "octeon_main.h"
27 #include "octeon_network.h"
28
29 /* OOM task polling interval */
30 #define LIO_OOM_POLL_INTERVAL_MS 250
31
32 #define OCTNIC_MAX_SG MAX_SKB_FRAGS
33
34 /**
35 * \brief Delete gather lists
36 * @param lio per-network private data
37 */
lio_delete_glists(struct lio * lio)38 void lio_delete_glists(struct lio *lio)
39 {
40 struct octnic_gather *g;
41 int i;
42
43 kfree(lio->glist_lock);
44 lio->glist_lock = NULL;
45
46 if (!lio->glist)
47 return;
48
49 for (i = 0; i < lio->oct_dev->num_iqs; i++) {
50 do {
51 g = (struct octnic_gather *)
52 lio_list_delete_head(&lio->glist[i]);
53 kfree(g);
54 } while (g);
55
56 if (lio->glists_virt_base && lio->glists_virt_base[i] &&
57 lio->glists_dma_base && lio->glists_dma_base[i]) {
58 lio_dma_free(lio->oct_dev,
59 lio->glist_entry_size * lio->tx_qsize,
60 lio->glists_virt_base[i],
61 lio->glists_dma_base[i]);
62 }
63 }
64
65 kfree(lio->glists_virt_base);
66 lio->glists_virt_base = NULL;
67
68 kfree(lio->glists_dma_base);
69 lio->glists_dma_base = NULL;
70
71 kfree(lio->glist);
72 lio->glist = NULL;
73 }
74
75 /**
76 * \brief Setup gather lists
77 * @param lio per-network private data
78 */
lio_setup_glists(struct octeon_device * oct,struct lio * lio,int num_iqs)79 int lio_setup_glists(struct octeon_device *oct, struct lio *lio, int num_iqs)
80 {
81 struct octnic_gather *g;
82 int i, j;
83
84 lio->glist_lock =
85 kcalloc(num_iqs, sizeof(*lio->glist_lock), GFP_KERNEL);
86 if (!lio->glist_lock)
87 return -ENOMEM;
88
89 lio->glist =
90 kcalloc(num_iqs, sizeof(*lio->glist), GFP_KERNEL);
91 if (!lio->glist) {
92 kfree(lio->glist_lock);
93 lio->glist_lock = NULL;
94 return -ENOMEM;
95 }
96
97 lio->glist_entry_size =
98 ROUNDUP8((ROUNDUP4(OCTNIC_MAX_SG) >> 2) * OCT_SG_ENTRY_SIZE);
99
100 /* allocate memory to store virtual and dma base address of
101 * per glist consistent memory
102 */
103 lio->glists_virt_base = kcalloc(num_iqs, sizeof(*lio->glists_virt_base),
104 GFP_KERNEL);
105 lio->glists_dma_base = kcalloc(num_iqs, sizeof(*lio->glists_dma_base),
106 GFP_KERNEL);
107
108 if (!lio->glists_virt_base || !lio->glists_dma_base) {
109 lio_delete_glists(lio);
110 return -ENOMEM;
111 }
112
113 for (i = 0; i < num_iqs; i++) {
114 int numa_node = dev_to_node(&oct->pci_dev->dev);
115
116 spin_lock_init(&lio->glist_lock[i]);
117
118 INIT_LIST_HEAD(&lio->glist[i]);
119
120 lio->glists_virt_base[i] =
121 lio_dma_alloc(oct,
122 lio->glist_entry_size * lio->tx_qsize,
123 &lio->glists_dma_base[i]);
124
125 if (!lio->glists_virt_base[i]) {
126 lio_delete_glists(lio);
127 return -ENOMEM;
128 }
129
130 for (j = 0; j < lio->tx_qsize; j++) {
131 g = kzalloc_node(sizeof(*g), GFP_KERNEL,
132 numa_node);
133 if (!g)
134 g = kzalloc(sizeof(*g), GFP_KERNEL);
135 if (!g)
136 break;
137
138 g->sg = lio->glists_virt_base[i] +
139 (j * lio->glist_entry_size);
140
141 g->sg_dma_ptr = lio->glists_dma_base[i] +
142 (j * lio->glist_entry_size);
143
144 list_add_tail(&g->list, &lio->glist[i]);
145 }
146
147 if (j != lio->tx_qsize) {
148 lio_delete_glists(lio);
149 return -ENOMEM;
150 }
151 }
152
153 return 0;
154 }
155
liquidio_set_feature(struct net_device * netdev,int cmd,u16 param1)156 int liquidio_set_feature(struct net_device *netdev, int cmd, u16 param1)
157 {
158 struct lio *lio = GET_LIO(netdev);
159 struct octeon_device *oct = lio->oct_dev;
160 struct octnic_ctrl_pkt nctrl;
161 int ret = 0;
162
163 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
164
165 nctrl.ncmd.u64 = 0;
166 nctrl.ncmd.s.cmd = cmd;
167 nctrl.ncmd.s.param1 = param1;
168 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
169 nctrl.netpndev = (u64)netdev;
170 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
171
172 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
173 if (ret) {
174 dev_err(&oct->pci_dev->dev, "Feature change failed in core (ret: 0x%x)\n",
175 ret);
176 if (ret > 0)
177 ret = -EIO;
178 }
179 return ret;
180 }
181
octeon_report_tx_completion_to_bql(void * txq,unsigned int pkts_compl,unsigned int bytes_compl)182 void octeon_report_tx_completion_to_bql(void *txq, unsigned int pkts_compl,
183 unsigned int bytes_compl)
184 {
185 struct netdev_queue *netdev_queue = txq;
186
187 netdev_tx_completed_queue(netdev_queue, pkts_compl, bytes_compl);
188 }
189
octeon_update_tx_completion_counters(void * buf,int reqtype,unsigned int * pkts_compl,unsigned int * bytes_compl)190 void octeon_update_tx_completion_counters(void *buf, int reqtype,
191 unsigned int *pkts_compl,
192 unsigned int *bytes_compl)
193 {
194 struct octnet_buf_free_info *finfo;
195 struct sk_buff *skb = NULL;
196 struct octeon_soft_command *sc;
197
198 switch (reqtype) {
199 case REQTYPE_NORESP_NET:
200 case REQTYPE_NORESP_NET_SG:
201 finfo = buf;
202 skb = finfo->skb;
203 break;
204
205 case REQTYPE_RESP_NET_SG:
206 case REQTYPE_RESP_NET:
207 sc = buf;
208 skb = sc->callback_arg;
209 break;
210
211 default:
212 return;
213 }
214
215 (*pkts_compl)++;
216 *bytes_compl += skb->len;
217 }
218
octeon_report_sent_bytes_to_bql(void * buf,int reqtype)219 int octeon_report_sent_bytes_to_bql(void *buf, int reqtype)
220 {
221 struct octnet_buf_free_info *finfo;
222 struct sk_buff *skb;
223 struct octeon_soft_command *sc;
224 struct netdev_queue *txq;
225
226 switch (reqtype) {
227 case REQTYPE_NORESP_NET:
228 case REQTYPE_NORESP_NET_SG:
229 finfo = buf;
230 skb = finfo->skb;
231 break;
232
233 case REQTYPE_RESP_NET_SG:
234 case REQTYPE_RESP_NET:
235 sc = buf;
236 skb = sc->callback_arg;
237 break;
238
239 default:
240 return 0;
241 }
242
243 txq = netdev_get_tx_queue(skb->dev, skb_get_queue_mapping(skb));
244 netdev_tx_sent_queue(txq, skb->len);
245
246 return netif_xmit_stopped(txq);
247 }
248
liquidio_link_ctrl_cmd_completion(void * nctrl_ptr)249 void liquidio_link_ctrl_cmd_completion(void *nctrl_ptr)
250 {
251 struct octnic_ctrl_pkt *nctrl = (struct octnic_ctrl_pkt *)nctrl_ptr;
252 struct net_device *netdev = (struct net_device *)nctrl->netpndev;
253 struct lio *lio = GET_LIO(netdev);
254 struct octeon_device *oct = lio->oct_dev;
255 u8 *mac;
256
257 if (nctrl->sc_status)
258 return;
259
260 switch (nctrl->ncmd.s.cmd) {
261 case OCTNET_CMD_CHANGE_DEVFLAGS:
262 case OCTNET_CMD_SET_MULTI_LIST:
263 case OCTNET_CMD_SET_UC_LIST:
264 break;
265
266 case OCTNET_CMD_CHANGE_MACADDR:
267 mac = ((u8 *)&nctrl->udd[0]) + 2;
268 if (nctrl->ncmd.s.param1) {
269 /* vfidx is 0 based, but vf_num (param1) is 1 based */
270 int vfidx = nctrl->ncmd.s.param1 - 1;
271 bool mac_is_admin_assigned = nctrl->ncmd.s.param2;
272
273 if (mac_is_admin_assigned)
274 netif_info(lio, probe, lio->netdev,
275 "MAC Address %pM is configured for VF %d\n",
276 mac, vfidx);
277 } else {
278 netif_info(lio, probe, lio->netdev,
279 " MACAddr changed to %pM\n",
280 mac);
281 }
282 break;
283
284 case OCTNET_CMD_GPIO_ACCESS:
285 netif_info(lio, probe, lio->netdev, "LED Flashing visual identification\n");
286
287 break;
288
289 case OCTNET_CMD_ID_ACTIVE:
290 netif_info(lio, probe, lio->netdev, "LED Flashing visual identification\n");
291
292 break;
293
294 case OCTNET_CMD_LRO_ENABLE:
295 dev_info(&oct->pci_dev->dev, "%s LRO Enabled\n", netdev->name);
296 break;
297
298 case OCTNET_CMD_LRO_DISABLE:
299 dev_info(&oct->pci_dev->dev, "%s LRO Disabled\n",
300 netdev->name);
301 break;
302
303 case OCTNET_CMD_VERBOSE_ENABLE:
304 dev_info(&oct->pci_dev->dev, "%s Firmware debug enabled\n",
305 netdev->name);
306 break;
307
308 case OCTNET_CMD_VERBOSE_DISABLE:
309 dev_info(&oct->pci_dev->dev, "%s Firmware debug disabled\n",
310 netdev->name);
311 break;
312
313 case OCTNET_CMD_VLAN_FILTER_CTL:
314 if (nctrl->ncmd.s.param1)
315 dev_info(&oct->pci_dev->dev,
316 "%s VLAN filter enabled\n", netdev->name);
317 else
318 dev_info(&oct->pci_dev->dev,
319 "%s VLAN filter disabled\n", netdev->name);
320 break;
321
322 case OCTNET_CMD_ADD_VLAN_FILTER:
323 dev_info(&oct->pci_dev->dev, "%s VLAN filter %d added\n",
324 netdev->name, nctrl->ncmd.s.param1);
325 break;
326
327 case OCTNET_CMD_DEL_VLAN_FILTER:
328 dev_info(&oct->pci_dev->dev, "%s VLAN filter %d removed\n",
329 netdev->name, nctrl->ncmd.s.param1);
330 break;
331
332 case OCTNET_CMD_SET_SETTINGS:
333 dev_info(&oct->pci_dev->dev, "%s settings changed\n",
334 netdev->name);
335
336 break;
337
338 /* Case to handle "OCTNET_CMD_TNL_RX_CSUM_CTL"
339 * Command passed by NIC driver
340 */
341 case OCTNET_CMD_TNL_RX_CSUM_CTL:
342 if (nctrl->ncmd.s.param1 == OCTNET_CMD_RXCSUM_ENABLE) {
343 netif_info(lio, probe, lio->netdev,
344 "RX Checksum Offload Enabled\n");
345 } else if (nctrl->ncmd.s.param1 ==
346 OCTNET_CMD_RXCSUM_DISABLE) {
347 netif_info(lio, probe, lio->netdev,
348 "RX Checksum Offload Disabled\n");
349 }
350 break;
351
352 /* Case to handle "OCTNET_CMD_TNL_TX_CSUM_CTL"
353 * Command passed by NIC driver
354 */
355 case OCTNET_CMD_TNL_TX_CSUM_CTL:
356 if (nctrl->ncmd.s.param1 == OCTNET_CMD_TXCSUM_ENABLE) {
357 netif_info(lio, probe, lio->netdev,
358 "TX Checksum Offload Enabled\n");
359 } else if (nctrl->ncmd.s.param1 ==
360 OCTNET_CMD_TXCSUM_DISABLE) {
361 netif_info(lio, probe, lio->netdev,
362 "TX Checksum Offload Disabled\n");
363 }
364 break;
365
366 /* Case to handle "OCTNET_CMD_VXLAN_PORT_CONFIG"
367 * Command passed by NIC driver
368 */
369 case OCTNET_CMD_VXLAN_PORT_CONFIG:
370 if (nctrl->ncmd.s.more == OCTNET_CMD_VXLAN_PORT_ADD) {
371 netif_info(lio, probe, lio->netdev,
372 "VxLAN Destination UDP PORT:%d ADDED\n",
373 nctrl->ncmd.s.param1);
374 } else if (nctrl->ncmd.s.more ==
375 OCTNET_CMD_VXLAN_PORT_DEL) {
376 netif_info(lio, probe, lio->netdev,
377 "VxLAN Destination UDP PORT:%d DELETED\n",
378 nctrl->ncmd.s.param1);
379 }
380 break;
381
382 case OCTNET_CMD_SET_FLOW_CTL:
383 netif_info(lio, probe, lio->netdev, "Set RX/TX flow control parameters\n");
384 break;
385
386 case OCTNET_CMD_QUEUE_COUNT_CTL:
387 netif_info(lio, probe, lio->netdev, "Queue count updated to %d\n",
388 nctrl->ncmd.s.param1);
389 break;
390
391 default:
392 dev_err(&oct->pci_dev->dev, "%s Unknown cmd %d\n", __func__,
393 nctrl->ncmd.s.cmd);
394 }
395 }
396
octeon_pf_changed_vf_macaddr(struct octeon_device * oct,u8 * mac)397 void octeon_pf_changed_vf_macaddr(struct octeon_device *oct, u8 *mac)
398 {
399 bool macaddr_changed = false;
400 struct net_device *netdev;
401 struct lio *lio;
402
403 rtnl_lock();
404
405 netdev = oct->props[0].netdev;
406 lio = GET_LIO(netdev);
407
408 lio->linfo.macaddr_is_admin_asgnd = true;
409
410 if (!ether_addr_equal(netdev->dev_addr, mac)) {
411 macaddr_changed = true;
412 ether_addr_copy(netdev->dev_addr, mac);
413 ether_addr_copy(((u8 *)&lio->linfo.hw_addr) + 2, mac);
414 call_netdevice_notifiers(NETDEV_CHANGEADDR, netdev);
415 }
416
417 rtnl_unlock();
418
419 if (macaddr_changed)
420 dev_info(&oct->pci_dev->dev,
421 "PF changed VF's MAC address to %pM\n", mac);
422
423 /* no need to notify the firmware of the macaddr change because
424 * the PF did that already
425 */
426 }
427
octeon_schedule_rxq_oom_work(struct octeon_device * oct,struct octeon_droq * droq)428 void octeon_schedule_rxq_oom_work(struct octeon_device *oct,
429 struct octeon_droq *droq)
430 {
431 struct net_device *netdev = oct->props[0].netdev;
432 struct lio *lio = GET_LIO(netdev);
433 struct cavium_wq *wq = &lio->rxq_status_wq[droq->q_no];
434
435 queue_delayed_work(wq->wq, &wq->wk.work,
436 msecs_to_jiffies(LIO_OOM_POLL_INTERVAL_MS));
437 }
438
octnet_poll_check_rxq_oom_status(struct work_struct * work)439 static void octnet_poll_check_rxq_oom_status(struct work_struct *work)
440 {
441 struct cavium_wk *wk = (struct cavium_wk *)work;
442 struct lio *lio = (struct lio *)wk->ctxptr;
443 struct octeon_device *oct = lio->oct_dev;
444 int q_no = wk->ctxul;
445 struct octeon_droq *droq = oct->droq[q_no];
446
447 if (!ifstate_check(lio, LIO_IFSTATE_RUNNING) || !droq)
448 return;
449
450 if (octeon_retry_droq_refill(droq))
451 octeon_schedule_rxq_oom_work(oct, droq);
452 }
453
setup_rx_oom_poll_fn(struct net_device * netdev)454 int setup_rx_oom_poll_fn(struct net_device *netdev)
455 {
456 struct lio *lio = GET_LIO(netdev);
457 struct octeon_device *oct = lio->oct_dev;
458 struct cavium_wq *wq;
459 int q, q_no;
460
461 for (q = 0; q < oct->num_oqs; q++) {
462 q_no = lio->linfo.rxpciq[q].s.q_no;
463 wq = &lio->rxq_status_wq[q_no];
464 wq->wq = alloc_workqueue("rxq-oom-status",
465 WQ_MEM_RECLAIM, 0);
466 if (!wq->wq) {
467 dev_err(&oct->pci_dev->dev, "unable to create cavium rxq oom status wq\n");
468 return -ENOMEM;
469 }
470
471 INIT_DELAYED_WORK(&wq->wk.work,
472 octnet_poll_check_rxq_oom_status);
473 wq->wk.ctxptr = lio;
474 wq->wk.ctxul = q_no;
475 }
476
477 return 0;
478 }
479
cleanup_rx_oom_poll_fn(struct net_device * netdev)480 void cleanup_rx_oom_poll_fn(struct net_device *netdev)
481 {
482 struct lio *lio = GET_LIO(netdev);
483 struct octeon_device *oct = lio->oct_dev;
484 struct cavium_wq *wq;
485 int q_no;
486
487 for (q_no = 0; q_no < oct->num_oqs; q_no++) {
488 wq = &lio->rxq_status_wq[q_no];
489 if (wq->wq) {
490 cancel_delayed_work_sync(&wq->wk.work);
491 flush_workqueue(wq->wq);
492 destroy_workqueue(wq->wq);
493 wq->wq = NULL;
494 }
495 }
496 }
497
498 /* Runs in interrupt context. */
lio_update_txq_status(struct octeon_device * oct,int iq_num)499 static void lio_update_txq_status(struct octeon_device *oct, int iq_num)
500 {
501 struct octeon_instr_queue *iq = oct->instr_queue[iq_num];
502 struct net_device *netdev;
503 struct lio *lio;
504
505 netdev = oct->props[iq->ifidx].netdev;
506
507 /* This is needed because the first IQ does not have
508 * a netdev associated with it.
509 */
510 if (!netdev)
511 return;
512
513 lio = GET_LIO(netdev);
514 if (__netif_subqueue_stopped(netdev, iq->q_index) &&
515 lio->linfo.link.s.link_up &&
516 (!octnet_iq_is_full(oct, iq_num))) {
517 netif_wake_subqueue(netdev, iq->q_index);
518 INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, iq_num,
519 tx_restart, 1);
520 }
521 }
522
523 /**
524 * \brief Setup output queue
525 * @param oct octeon device
526 * @param q_no which queue
527 * @param num_descs how many descriptors
528 * @param desc_size size of each descriptor
529 * @param app_ctx application context
530 */
octeon_setup_droq(struct octeon_device * oct,int q_no,int num_descs,int desc_size,void * app_ctx)531 static int octeon_setup_droq(struct octeon_device *oct, int q_no, int num_descs,
532 int desc_size, void *app_ctx)
533 {
534 int ret_val;
535
536 dev_dbg(&oct->pci_dev->dev, "Creating Droq: %d\n", q_no);
537 /* droq creation and local register settings. */
538 ret_val = octeon_create_droq(oct, q_no, num_descs, desc_size, app_ctx);
539 if (ret_val < 0)
540 return ret_val;
541
542 if (ret_val == 1) {
543 dev_dbg(&oct->pci_dev->dev, "Using default droq %d\n", q_no);
544 return 0;
545 }
546
547 /* Enable the droq queues */
548 octeon_set_droq_pkt_op(oct, q_no, 1);
549
550 /* Send Credit for Octeon Output queues. Credits are always
551 * sent after the output queue is enabled.
552 */
553 writel(oct->droq[q_no]->max_count, oct->droq[q_no]->pkts_credit_reg);
554
555 return ret_val;
556 }
557
558 /** Routine to push packets arriving on Octeon interface upto network layer.
559 * @param oct_id - octeon device id.
560 * @param skbuff - skbuff struct to be passed to network layer.
561 * @param len - size of total data received.
562 * @param rh - Control header associated with the packet
563 * @param param - additional control data with the packet
564 * @param arg - farg registered in droq_ops
565 */
566 static void
liquidio_push_packet(u32 octeon_id,void * skbuff,u32 len,union octeon_rh * rh,void * param,void * arg)567 liquidio_push_packet(u32 octeon_id __attribute__((unused)),
568 void *skbuff,
569 u32 len,
570 union octeon_rh *rh,
571 void *param,
572 void *arg)
573 {
574 struct net_device *netdev = (struct net_device *)arg;
575 struct octeon_droq *droq =
576 container_of(param, struct octeon_droq, napi);
577 struct sk_buff *skb = (struct sk_buff *)skbuff;
578 struct skb_shared_hwtstamps *shhwtstamps;
579 struct napi_struct *napi = param;
580 u16 vtag = 0;
581 u32 r_dh_off;
582 u64 ns;
583
584 if (netdev) {
585 struct lio *lio = GET_LIO(netdev);
586 struct octeon_device *oct = lio->oct_dev;
587
588 /* Do not proceed if the interface is not in RUNNING state. */
589 if (!ifstate_check(lio, LIO_IFSTATE_RUNNING)) {
590 recv_buffer_free(skb);
591 droq->stats.rx_dropped++;
592 return;
593 }
594
595 skb->dev = netdev;
596
597 skb_record_rx_queue(skb, droq->q_no);
598 if (likely(len > MIN_SKB_SIZE)) {
599 struct octeon_skb_page_info *pg_info;
600 unsigned char *va;
601
602 pg_info = ((struct octeon_skb_page_info *)(skb->cb));
603 if (pg_info->page) {
604 /* For Paged allocation use the frags */
605 va = page_address(pg_info->page) +
606 pg_info->page_offset;
607 memcpy(skb->data, va, MIN_SKB_SIZE);
608 skb_put(skb, MIN_SKB_SIZE);
609 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
610 pg_info->page,
611 pg_info->page_offset +
612 MIN_SKB_SIZE,
613 len - MIN_SKB_SIZE,
614 LIO_RXBUFFER_SZ);
615 }
616 } else {
617 struct octeon_skb_page_info *pg_info =
618 ((struct octeon_skb_page_info *)(skb->cb));
619 skb_copy_to_linear_data(skb, page_address(pg_info->page)
620 + pg_info->page_offset, len);
621 skb_put(skb, len);
622 put_page(pg_info->page);
623 }
624
625 r_dh_off = (rh->r_dh.len - 1) * BYTES_PER_DHLEN_UNIT;
626
627 if (oct->ptp_enable) {
628 if (rh->r_dh.has_hwtstamp) {
629 /* timestamp is included from the hardware at
630 * the beginning of the packet.
631 */
632 if (ifstate_check
633 (lio,
634 LIO_IFSTATE_RX_TIMESTAMP_ENABLED)) {
635 /* Nanoseconds are in the first 64-bits
636 * of the packet.
637 */
638 memcpy(&ns, (skb->data + r_dh_off),
639 sizeof(ns));
640 r_dh_off -= BYTES_PER_DHLEN_UNIT;
641 shhwtstamps = skb_hwtstamps(skb);
642 shhwtstamps->hwtstamp =
643 ns_to_ktime(ns +
644 lio->ptp_adjust);
645 }
646 }
647 }
648
649 if (rh->r_dh.has_hash) {
650 __be32 *hash_be = (__be32 *)(skb->data + r_dh_off);
651 u32 hash = be32_to_cpu(*hash_be);
652
653 skb_set_hash(skb, hash, PKT_HASH_TYPE_L4);
654 r_dh_off -= BYTES_PER_DHLEN_UNIT;
655 }
656
657 skb_pull(skb, rh->r_dh.len * BYTES_PER_DHLEN_UNIT);
658 skb->protocol = eth_type_trans(skb, skb->dev);
659
660 if ((netdev->features & NETIF_F_RXCSUM) &&
661 (((rh->r_dh.encap_on) &&
662 (rh->r_dh.csum_verified & CNNIC_TUN_CSUM_VERIFIED)) ||
663 (!(rh->r_dh.encap_on) &&
664 ((rh->r_dh.csum_verified & CNNIC_CSUM_VERIFIED) ==
665 CNNIC_CSUM_VERIFIED))))
666 /* checksum has already been verified */
667 skb->ip_summed = CHECKSUM_UNNECESSARY;
668 else
669 skb->ip_summed = CHECKSUM_NONE;
670
671 /* Setting Encapsulation field on basis of status received
672 * from the firmware
673 */
674 if (rh->r_dh.encap_on) {
675 skb->encapsulation = 1;
676 skb->csum_level = 1;
677 droq->stats.rx_vxlan++;
678 }
679
680 /* inbound VLAN tag */
681 if ((netdev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
682 rh->r_dh.vlan) {
683 u16 priority = rh->r_dh.priority;
684 u16 vid = rh->r_dh.vlan;
685
686 vtag = (priority << VLAN_PRIO_SHIFT) | vid;
687 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vtag);
688 }
689
690 napi_gro_receive(napi, skb);
691
692 droq->stats.rx_bytes_received += len -
693 rh->r_dh.len * BYTES_PER_DHLEN_UNIT;
694 droq->stats.rx_pkts_received++;
695 } else {
696 recv_buffer_free(skb);
697 }
698 }
699
700 /**
701 * \brief wrapper for calling napi_schedule
702 * @param param parameters to pass to napi_schedule
703 *
704 * Used when scheduling on different CPUs
705 */
napi_schedule_wrapper(void * param)706 static void napi_schedule_wrapper(void *param)
707 {
708 struct napi_struct *napi = param;
709
710 napi_schedule(napi);
711 }
712
713 /**
714 * \brief callback when receive interrupt occurs and we are in NAPI mode
715 * @param arg pointer to octeon output queue
716 */
liquidio_napi_drv_callback(void * arg)717 static void liquidio_napi_drv_callback(void *arg)
718 {
719 struct octeon_device *oct;
720 struct octeon_droq *droq = arg;
721 int this_cpu = smp_processor_id();
722
723 oct = droq->oct_dev;
724
725 if (OCTEON_CN23XX_PF(oct) || OCTEON_CN23XX_VF(oct) ||
726 droq->cpu_id == this_cpu) {
727 napi_schedule_irqoff(&droq->napi);
728 } else {
729 call_single_data_t *csd = &droq->csd;
730
731 csd->func = napi_schedule_wrapper;
732 csd->info = &droq->napi;
733 csd->flags = 0;
734
735 smp_call_function_single_async(droq->cpu_id, csd);
736 }
737 }
738
739 /**
740 * \brief Entry point for NAPI polling
741 * @param napi NAPI structure
742 * @param budget maximum number of items to process
743 */
liquidio_napi_poll(struct napi_struct * napi,int budget)744 static int liquidio_napi_poll(struct napi_struct *napi, int budget)
745 {
746 struct octeon_instr_queue *iq;
747 struct octeon_device *oct;
748 struct octeon_droq *droq;
749 int tx_done = 0, iq_no;
750 int work_done;
751
752 droq = container_of(napi, struct octeon_droq, napi);
753 oct = droq->oct_dev;
754 iq_no = droq->q_no;
755
756 /* Handle Droq descriptors */
757 work_done = octeon_droq_process_poll_pkts(oct, droq, budget);
758
759 /* Flush the instruction queue */
760 iq = oct->instr_queue[iq_no];
761 if (iq) {
762 /* TODO: move this check to inside octeon_flush_iq,
763 * once check_db_timeout is removed
764 */
765 if (atomic_read(&iq->instr_pending))
766 /* Process iq buffers with in the budget limits */
767 tx_done = octeon_flush_iq(oct, iq, budget);
768 else
769 tx_done = 1;
770 /* Update iq read-index rather than waiting for next interrupt.
771 * Return back if tx_done is false.
772 */
773 /* sub-queue status update */
774 lio_update_txq_status(oct, iq_no);
775 } else {
776 dev_err(&oct->pci_dev->dev, "%s: iq (%d) num invalid\n",
777 __func__, iq_no);
778 }
779
780 #define MAX_REG_CNT 2000000U
781 /* force enable interrupt if reg cnts are high to avoid wraparound */
782 if ((work_done < budget && tx_done) ||
783 (iq && iq->pkt_in_done >= MAX_REG_CNT) ||
784 (droq->pkt_count >= MAX_REG_CNT)) {
785 tx_done = 1;
786 napi_complete_done(napi, work_done);
787
788 octeon_enable_irq(droq->oct_dev, droq->q_no);
789 return 0;
790 }
791
792 return (!tx_done) ? (budget) : (work_done);
793 }
794
795 /**
796 * \brief Setup input and output queues
797 * @param octeon_dev octeon device
798 * @param ifidx Interface index
799 *
800 * Note: Queues are with respect to the octeon device. Thus
801 * an input queue is for egress packets, and output queues
802 * are for ingress packets.
803 */
liquidio_setup_io_queues(struct octeon_device * octeon_dev,int ifidx,u32 num_iqs,u32 num_oqs)804 int liquidio_setup_io_queues(struct octeon_device *octeon_dev, int ifidx,
805 u32 num_iqs, u32 num_oqs)
806 {
807 struct octeon_droq_ops droq_ops;
808 struct net_device *netdev;
809 struct octeon_droq *droq;
810 struct napi_struct *napi;
811 int cpu_id_modulus;
812 int num_tx_descs;
813 struct lio *lio;
814 int retval = 0;
815 int q, q_no;
816 int cpu_id;
817
818 netdev = octeon_dev->props[ifidx].netdev;
819
820 lio = GET_LIO(netdev);
821
822 memset(&droq_ops, 0, sizeof(struct octeon_droq_ops));
823
824 droq_ops.fptr = liquidio_push_packet;
825 droq_ops.farg = netdev;
826
827 droq_ops.poll_mode = 1;
828 droq_ops.napi_fn = liquidio_napi_drv_callback;
829 cpu_id = 0;
830 cpu_id_modulus = num_present_cpus();
831
832 /* set up DROQs. */
833 for (q = 0; q < num_oqs; q++) {
834 q_no = lio->linfo.rxpciq[q].s.q_no;
835 dev_dbg(&octeon_dev->pci_dev->dev,
836 "%s index:%d linfo.rxpciq.s.q_no:%d\n",
837 __func__, q, q_no);
838 retval = octeon_setup_droq(
839 octeon_dev, q_no,
840 CFG_GET_NUM_RX_DESCS_NIC_IF(octeon_get_conf(octeon_dev),
841 lio->ifidx),
842 CFG_GET_NUM_RX_BUF_SIZE_NIC_IF(octeon_get_conf(octeon_dev),
843 lio->ifidx),
844 NULL);
845 if (retval) {
846 dev_err(&octeon_dev->pci_dev->dev,
847 "%s : Runtime DROQ(RxQ) creation failed.\n",
848 __func__);
849 return 1;
850 }
851
852 droq = octeon_dev->droq[q_no];
853 napi = &droq->napi;
854 dev_dbg(&octeon_dev->pci_dev->dev, "netif_napi_add netdev:%llx oct:%llx\n",
855 (u64)netdev, (u64)octeon_dev);
856 netif_napi_add(netdev, napi, liquidio_napi_poll, 64);
857
858 /* designate a CPU for this droq */
859 droq->cpu_id = cpu_id;
860 cpu_id++;
861 if (cpu_id >= cpu_id_modulus)
862 cpu_id = 0;
863
864 octeon_register_droq_ops(octeon_dev, q_no, &droq_ops);
865 }
866
867 if (OCTEON_CN23XX_PF(octeon_dev) || OCTEON_CN23XX_VF(octeon_dev)) {
868 /* 23XX PF/VF can send/recv control messages (via the first
869 * PF/VF-owned droq) from the firmware even if the ethX
870 * interface is down, so that's why poll_mode must be off
871 * for the first droq.
872 */
873 octeon_dev->droq[0]->ops.poll_mode = 0;
874 }
875
876 /* set up IQs. */
877 for (q = 0; q < num_iqs; q++) {
878 num_tx_descs = CFG_GET_NUM_TX_DESCS_NIC_IF(
879 octeon_get_conf(octeon_dev), lio->ifidx);
880 retval = octeon_setup_iq(octeon_dev, ifidx, q,
881 lio->linfo.txpciq[q], num_tx_descs,
882 netdev_get_tx_queue(netdev, q));
883 if (retval) {
884 dev_err(&octeon_dev->pci_dev->dev,
885 " %s : Runtime IQ(TxQ) creation failed.\n",
886 __func__);
887 return 1;
888 }
889
890 /* XPS */
891 if (!OCTEON_CN23XX_VF(octeon_dev) && octeon_dev->msix_on &&
892 octeon_dev->ioq_vector) {
893 struct octeon_ioq_vector *ioq_vector;
894
895 ioq_vector = &octeon_dev->ioq_vector[q];
896 netif_set_xps_queue(netdev,
897 &ioq_vector->affinity_mask,
898 ioq_vector->iq_index);
899 }
900 }
901
902 return 0;
903 }
904
905 static
liquidio_schedule_msix_droq_pkt_handler(struct octeon_droq * droq,u64 ret)906 int liquidio_schedule_msix_droq_pkt_handler(struct octeon_droq *droq, u64 ret)
907 {
908 struct octeon_device *oct = droq->oct_dev;
909 struct octeon_device_priv *oct_priv =
910 (struct octeon_device_priv *)oct->priv;
911
912 if (droq->ops.poll_mode) {
913 droq->ops.napi_fn(droq);
914 } else {
915 if (ret & MSIX_PO_INT) {
916 if (OCTEON_CN23XX_VF(oct))
917 dev_err(&oct->pci_dev->dev,
918 "should not come here should not get rx when poll mode = 0 for vf\n");
919 tasklet_schedule(&oct_priv->droq_tasklet);
920 return 1;
921 }
922 /* this will be flushed periodically by check iq db */
923 if (ret & MSIX_PI_INT)
924 return 0;
925 }
926
927 return 0;
928 }
929
930 irqreturn_t
liquidio_msix_intr_handler(int irq,void * dev)931 liquidio_msix_intr_handler(int irq __attribute__((unused)), void *dev)
932 {
933 struct octeon_ioq_vector *ioq_vector = (struct octeon_ioq_vector *)dev;
934 struct octeon_device *oct = ioq_vector->oct_dev;
935 struct octeon_droq *droq = oct->droq[ioq_vector->droq_index];
936 u64 ret;
937
938 ret = oct->fn_list.msix_interrupt_handler(ioq_vector);
939
940 if (ret & MSIX_PO_INT || ret & MSIX_PI_INT)
941 liquidio_schedule_msix_droq_pkt_handler(droq, ret);
942
943 return IRQ_HANDLED;
944 }
945
946 /**
947 * \brief Droq packet processor sceduler
948 * @param oct octeon device
949 */
liquidio_schedule_droq_pkt_handlers(struct octeon_device * oct)950 static void liquidio_schedule_droq_pkt_handlers(struct octeon_device *oct)
951 {
952 struct octeon_device_priv *oct_priv =
953 (struct octeon_device_priv *)oct->priv;
954 struct octeon_droq *droq;
955 u64 oq_no;
956
957 if (oct->int_status & OCT_DEV_INTR_PKT_DATA) {
958 for (oq_no = 0; oq_no < MAX_OCTEON_OUTPUT_QUEUES(oct);
959 oq_no++) {
960 if (!(oct->droq_intr & BIT_ULL(oq_no)))
961 continue;
962
963 droq = oct->droq[oq_no];
964
965 if (droq->ops.poll_mode) {
966 droq->ops.napi_fn(droq);
967 oct_priv->napi_mask |= BIT_ULL(oq_no);
968 } else {
969 tasklet_schedule(&oct_priv->droq_tasklet);
970 }
971 }
972 }
973 }
974
975 /**
976 * \brief Interrupt handler for octeon
977 * @param irq unused
978 * @param dev octeon device
979 */
980 static
liquidio_legacy_intr_handler(int irq,void * dev)981 irqreturn_t liquidio_legacy_intr_handler(int irq __attribute__((unused)),
982 void *dev)
983 {
984 struct octeon_device *oct = (struct octeon_device *)dev;
985 irqreturn_t ret;
986
987 /* Disable our interrupts for the duration of ISR */
988 oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
989
990 ret = oct->fn_list.process_interrupt_regs(oct);
991
992 if (ret == IRQ_HANDLED)
993 liquidio_schedule_droq_pkt_handlers(oct);
994
995 /* Re-enable our interrupts */
996 if (!(atomic_read(&oct->status) == OCT_DEV_IN_RESET))
997 oct->fn_list.enable_interrupt(oct, OCTEON_ALL_INTR);
998
999 return ret;
1000 }
1001
1002 /**
1003 * \brief Setup interrupt for octeon device
1004 * @param oct octeon device
1005 *
1006 * Enable interrupt in Octeon device as given in the PCI interrupt mask.
1007 */
octeon_setup_interrupt(struct octeon_device * oct,u32 num_ioqs)1008 int octeon_setup_interrupt(struct octeon_device *oct, u32 num_ioqs)
1009 {
1010 struct msix_entry *msix_entries;
1011 char *queue_irq_names = NULL;
1012 int i, num_interrupts = 0;
1013 int num_alloc_ioq_vectors;
1014 char *aux_irq_name = NULL;
1015 int num_ioq_vectors;
1016 int irqret, err;
1017
1018 if (oct->msix_on) {
1019 oct->num_msix_irqs = num_ioqs;
1020 if (OCTEON_CN23XX_PF(oct)) {
1021 num_interrupts = MAX_IOQ_INTERRUPTS_PER_PF + 1;
1022
1023 /* one non ioq interrupt for handling
1024 * sli_mac_pf_int_sum
1025 */
1026 oct->num_msix_irqs += 1;
1027 } else if (OCTEON_CN23XX_VF(oct)) {
1028 num_interrupts = MAX_IOQ_INTERRUPTS_PER_VF;
1029 }
1030
1031 /* allocate storage for the names assigned to each irq */
1032 oct->irq_name_storage =
1033 kcalloc(num_interrupts, INTRNAMSIZ, GFP_KERNEL);
1034 if (!oct->irq_name_storage) {
1035 dev_err(&oct->pci_dev->dev, "Irq name storage alloc failed...\n");
1036 return -ENOMEM;
1037 }
1038
1039 queue_irq_names = oct->irq_name_storage;
1040
1041 if (OCTEON_CN23XX_PF(oct))
1042 aux_irq_name = &queue_irq_names
1043 [IRQ_NAME_OFF(MAX_IOQ_INTERRUPTS_PER_PF)];
1044
1045 oct->msix_entries = kcalloc(oct->num_msix_irqs,
1046 sizeof(struct msix_entry),
1047 GFP_KERNEL);
1048 if (!oct->msix_entries) {
1049 dev_err(&oct->pci_dev->dev, "Memory Alloc failed...\n");
1050 kfree(oct->irq_name_storage);
1051 oct->irq_name_storage = NULL;
1052 return -ENOMEM;
1053 }
1054
1055 msix_entries = (struct msix_entry *)oct->msix_entries;
1056
1057 /*Assumption is that pf msix vectors start from pf srn to pf to
1058 * trs and not from 0. if not change this code
1059 */
1060 if (OCTEON_CN23XX_PF(oct)) {
1061 for (i = 0; i < oct->num_msix_irqs - 1; i++)
1062 msix_entries[i].entry =
1063 oct->sriov_info.pf_srn + i;
1064
1065 msix_entries[oct->num_msix_irqs - 1].entry =
1066 oct->sriov_info.trs;
1067 } else if (OCTEON_CN23XX_VF(oct)) {
1068 for (i = 0; i < oct->num_msix_irqs; i++)
1069 msix_entries[i].entry = i;
1070 }
1071 num_alloc_ioq_vectors = pci_enable_msix_range(
1072 oct->pci_dev, msix_entries,
1073 oct->num_msix_irqs,
1074 oct->num_msix_irqs);
1075 if (num_alloc_ioq_vectors < 0) {
1076 dev_err(&oct->pci_dev->dev, "unable to Allocate MSI-X interrupts\n");
1077 kfree(oct->msix_entries);
1078 oct->msix_entries = NULL;
1079 kfree(oct->irq_name_storage);
1080 oct->irq_name_storage = NULL;
1081 return num_alloc_ioq_vectors;
1082 }
1083
1084 dev_dbg(&oct->pci_dev->dev, "OCTEON: Enough MSI-X interrupts are allocated...\n");
1085
1086 num_ioq_vectors = oct->num_msix_irqs;
1087 /** For PF, there is one non-ioq interrupt handler */
1088 if (OCTEON_CN23XX_PF(oct)) {
1089 num_ioq_vectors -= 1;
1090
1091 snprintf(aux_irq_name, INTRNAMSIZ,
1092 "LiquidIO%u-pf%u-aux", oct->octeon_id,
1093 oct->pf_num);
1094 irqret = request_irq(
1095 msix_entries[num_ioq_vectors].vector,
1096 liquidio_legacy_intr_handler, 0,
1097 aux_irq_name, oct);
1098 if (irqret) {
1099 dev_err(&oct->pci_dev->dev,
1100 "Request_irq failed for MSIX interrupt Error: %d\n",
1101 irqret);
1102 pci_disable_msix(oct->pci_dev);
1103 kfree(oct->msix_entries);
1104 kfree(oct->irq_name_storage);
1105 oct->irq_name_storage = NULL;
1106 oct->msix_entries = NULL;
1107 return irqret;
1108 }
1109 }
1110 for (i = 0 ; i < num_ioq_vectors ; i++) {
1111 if (OCTEON_CN23XX_PF(oct))
1112 snprintf(&queue_irq_names[IRQ_NAME_OFF(i)],
1113 INTRNAMSIZ, "LiquidIO%u-pf%u-rxtx-%u",
1114 oct->octeon_id, oct->pf_num, i);
1115
1116 if (OCTEON_CN23XX_VF(oct))
1117 snprintf(&queue_irq_names[IRQ_NAME_OFF(i)],
1118 INTRNAMSIZ, "LiquidIO%u-vf%u-rxtx-%u",
1119 oct->octeon_id, oct->vf_num, i);
1120
1121 irqret = request_irq(msix_entries[i].vector,
1122 liquidio_msix_intr_handler, 0,
1123 &queue_irq_names[IRQ_NAME_OFF(i)],
1124 &oct->ioq_vector[i]);
1125
1126 if (irqret) {
1127 dev_err(&oct->pci_dev->dev,
1128 "Request_irq failed for MSIX interrupt Error: %d\n",
1129 irqret);
1130 /** Freeing the non-ioq irq vector here . */
1131 free_irq(msix_entries[num_ioq_vectors].vector,
1132 oct);
1133
1134 while (i) {
1135 i--;
1136 /** clearing affinity mask. */
1137 irq_set_affinity_hint(
1138 msix_entries[i].vector,
1139 NULL);
1140 free_irq(msix_entries[i].vector,
1141 &oct->ioq_vector[i]);
1142 }
1143 pci_disable_msix(oct->pci_dev);
1144 kfree(oct->msix_entries);
1145 kfree(oct->irq_name_storage);
1146 oct->irq_name_storage = NULL;
1147 oct->msix_entries = NULL;
1148 return irqret;
1149 }
1150 oct->ioq_vector[i].vector = msix_entries[i].vector;
1151 /* assign the cpu mask for this msix interrupt vector */
1152 irq_set_affinity_hint(msix_entries[i].vector,
1153 &oct->ioq_vector[i].affinity_mask
1154 );
1155 }
1156 dev_dbg(&oct->pci_dev->dev, "OCTEON[%d]: MSI-X enabled\n",
1157 oct->octeon_id);
1158 } else {
1159 err = pci_enable_msi(oct->pci_dev);
1160 if (err)
1161 dev_warn(&oct->pci_dev->dev, "Reverting to legacy interrupts. Error: %d\n",
1162 err);
1163 else
1164 oct->flags |= LIO_FLAG_MSI_ENABLED;
1165
1166 /* allocate storage for the names assigned to the irq */
1167 oct->irq_name_storage = kcalloc(1, INTRNAMSIZ, GFP_KERNEL);
1168 if (!oct->irq_name_storage)
1169 return -ENOMEM;
1170
1171 queue_irq_names = oct->irq_name_storage;
1172
1173 if (OCTEON_CN23XX_PF(oct))
1174 snprintf(&queue_irq_names[IRQ_NAME_OFF(0)], INTRNAMSIZ,
1175 "LiquidIO%u-pf%u-rxtx-%u",
1176 oct->octeon_id, oct->pf_num, 0);
1177
1178 if (OCTEON_CN23XX_VF(oct))
1179 snprintf(&queue_irq_names[IRQ_NAME_OFF(0)], INTRNAMSIZ,
1180 "LiquidIO%u-vf%u-rxtx-%u",
1181 oct->octeon_id, oct->vf_num, 0);
1182
1183 irqret = request_irq(oct->pci_dev->irq,
1184 liquidio_legacy_intr_handler,
1185 IRQF_SHARED,
1186 &queue_irq_names[IRQ_NAME_OFF(0)], oct);
1187 if (irqret) {
1188 if (oct->flags & LIO_FLAG_MSI_ENABLED)
1189 pci_disable_msi(oct->pci_dev);
1190 dev_err(&oct->pci_dev->dev, "Request IRQ failed with code: %d\n",
1191 irqret);
1192 kfree(oct->irq_name_storage);
1193 oct->irq_name_storage = NULL;
1194 return irqret;
1195 }
1196 }
1197 return 0;
1198 }
1199
1200 /**
1201 * \brief Net device change_mtu
1202 * @param netdev network device
1203 */
liquidio_change_mtu(struct net_device * netdev,int new_mtu)1204 int liquidio_change_mtu(struct net_device *netdev, int new_mtu)
1205 {
1206 struct lio *lio = GET_LIO(netdev);
1207 struct octeon_device *oct = lio->oct_dev;
1208 struct octeon_soft_command *sc;
1209 union octnet_cmd *ncmd;
1210 int ret = 0;
1211
1212 sc = (struct octeon_soft_command *)
1213 octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE, 16, 0);
1214 if (!sc) {
1215 netif_info(lio, rx_err, lio->netdev,
1216 "Failed to allocate soft command\n");
1217 return -ENOMEM;
1218 }
1219
1220 ncmd = (union octnet_cmd *)sc->virtdptr;
1221
1222 init_completion(&sc->complete);
1223 sc->sc_status = OCTEON_REQUEST_PENDING;
1224
1225 ncmd->u64 = 0;
1226 ncmd->s.cmd = OCTNET_CMD_CHANGE_MTU;
1227 ncmd->s.param1 = new_mtu;
1228
1229 octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3));
1230
1231 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
1232
1233 octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
1234 OPCODE_NIC_CMD, 0, 0, 0);
1235
1236 ret = octeon_send_soft_command(oct, sc);
1237 if (ret == IQ_SEND_FAILED) {
1238 netif_info(lio, rx_err, lio->netdev, "Failed to change MTU\n");
1239 octeon_free_soft_command(oct, sc);
1240 return -EINVAL;
1241 }
1242 /* Sleep on a wait queue till the cond flag indicates that the
1243 * response arrived or timed-out.
1244 */
1245 ret = wait_for_sc_completion_timeout(oct, sc, 0);
1246 if (ret)
1247 return ret;
1248
1249 if (sc->sc_status) {
1250 WRITE_ONCE(sc->caller_is_done, true);
1251 return -EINVAL;
1252 }
1253
1254 netdev->mtu = new_mtu;
1255 lio->mtu = new_mtu;
1256
1257 WRITE_ONCE(sc->caller_is_done, true);
1258 return 0;
1259 }
1260
lio_wait_for_clean_oq(struct octeon_device * oct)1261 int lio_wait_for_clean_oq(struct octeon_device *oct)
1262 {
1263 int retry = 100, pending_pkts = 0;
1264 int idx;
1265
1266 do {
1267 pending_pkts = 0;
1268
1269 for (idx = 0; idx < MAX_OCTEON_OUTPUT_QUEUES(oct); idx++) {
1270 if (!(oct->io_qmask.oq & BIT_ULL(idx)))
1271 continue;
1272 pending_pkts +=
1273 atomic_read(&oct->droq[idx]->pkts_pending);
1274 }
1275
1276 if (pending_pkts > 0)
1277 schedule_timeout_uninterruptible(1);
1278
1279 } while (retry-- && pending_pkts);
1280
1281 return pending_pkts;
1282 }
1283
1284 static void
octnet_nic_stats_callback(struct octeon_device * oct_dev,u32 status,void * ptr)1285 octnet_nic_stats_callback(struct octeon_device *oct_dev,
1286 u32 status, void *ptr)
1287 {
1288 struct octeon_soft_command *sc = (struct octeon_soft_command *)ptr;
1289 struct oct_nic_stats_resp *resp =
1290 (struct oct_nic_stats_resp *)sc->virtrptr;
1291 struct nic_rx_stats *rsp_rstats = &resp->stats.fromwire;
1292 struct nic_tx_stats *rsp_tstats = &resp->stats.fromhost;
1293 struct nic_rx_stats *rstats = &oct_dev->link_stats.fromwire;
1294 struct nic_tx_stats *tstats = &oct_dev->link_stats.fromhost;
1295
1296 if (status != OCTEON_REQUEST_TIMEOUT && !resp->status) {
1297 octeon_swap_8B_data((u64 *)&resp->stats,
1298 (sizeof(struct oct_link_stats)) >> 3);
1299
1300 /* RX link-level stats */
1301 rstats->total_rcvd = rsp_rstats->total_rcvd;
1302 rstats->bytes_rcvd = rsp_rstats->bytes_rcvd;
1303 rstats->total_bcst = rsp_rstats->total_bcst;
1304 rstats->total_mcst = rsp_rstats->total_mcst;
1305 rstats->runts = rsp_rstats->runts;
1306 rstats->ctl_rcvd = rsp_rstats->ctl_rcvd;
1307 /* Accounts for over/under-run of buffers */
1308 rstats->fifo_err = rsp_rstats->fifo_err;
1309 rstats->dmac_drop = rsp_rstats->dmac_drop;
1310 rstats->fcs_err = rsp_rstats->fcs_err;
1311 rstats->jabber_err = rsp_rstats->jabber_err;
1312 rstats->l2_err = rsp_rstats->l2_err;
1313 rstats->frame_err = rsp_rstats->frame_err;
1314 rstats->red_drops = rsp_rstats->red_drops;
1315
1316 /* RX firmware stats */
1317 rstats->fw_total_rcvd = rsp_rstats->fw_total_rcvd;
1318 rstats->fw_total_fwd = rsp_rstats->fw_total_fwd;
1319 rstats->fw_total_mcast = rsp_rstats->fw_total_mcast;
1320 rstats->fw_total_bcast = rsp_rstats->fw_total_bcast;
1321 rstats->fw_err_pko = rsp_rstats->fw_err_pko;
1322 rstats->fw_err_link = rsp_rstats->fw_err_link;
1323 rstats->fw_err_drop = rsp_rstats->fw_err_drop;
1324 rstats->fw_rx_vxlan = rsp_rstats->fw_rx_vxlan;
1325 rstats->fw_rx_vxlan_err = rsp_rstats->fw_rx_vxlan_err;
1326
1327 /* Number of packets that are LROed */
1328 rstats->fw_lro_pkts = rsp_rstats->fw_lro_pkts;
1329 /* Number of octets that are LROed */
1330 rstats->fw_lro_octs = rsp_rstats->fw_lro_octs;
1331 /* Number of LRO packets formed */
1332 rstats->fw_total_lro = rsp_rstats->fw_total_lro;
1333 /* Number of times lRO of packet aborted */
1334 rstats->fw_lro_aborts = rsp_rstats->fw_lro_aborts;
1335 rstats->fw_lro_aborts_port = rsp_rstats->fw_lro_aborts_port;
1336 rstats->fw_lro_aborts_seq = rsp_rstats->fw_lro_aborts_seq;
1337 rstats->fw_lro_aborts_tsval = rsp_rstats->fw_lro_aborts_tsval;
1338 rstats->fw_lro_aborts_timer = rsp_rstats->fw_lro_aborts_timer;
1339 /* intrmod: packet forward rate */
1340 rstats->fwd_rate = rsp_rstats->fwd_rate;
1341
1342 /* TX link-level stats */
1343 tstats->total_pkts_sent = rsp_tstats->total_pkts_sent;
1344 tstats->total_bytes_sent = rsp_tstats->total_bytes_sent;
1345 tstats->mcast_pkts_sent = rsp_tstats->mcast_pkts_sent;
1346 tstats->bcast_pkts_sent = rsp_tstats->bcast_pkts_sent;
1347 tstats->ctl_sent = rsp_tstats->ctl_sent;
1348 /* Packets sent after one collision*/
1349 tstats->one_collision_sent = rsp_tstats->one_collision_sent;
1350 /* Packets sent after multiple collision*/
1351 tstats->multi_collision_sent = rsp_tstats->multi_collision_sent;
1352 /* Packets not sent due to max collisions */
1353 tstats->max_collision_fail = rsp_tstats->max_collision_fail;
1354 /* Packets not sent due to max deferrals */
1355 tstats->max_deferral_fail = rsp_tstats->max_deferral_fail;
1356 /* Accounts for over/under-run of buffers */
1357 tstats->fifo_err = rsp_tstats->fifo_err;
1358 tstats->runts = rsp_tstats->runts;
1359 /* Total number of collisions detected */
1360 tstats->total_collisions = rsp_tstats->total_collisions;
1361
1362 /* firmware stats */
1363 tstats->fw_total_sent = rsp_tstats->fw_total_sent;
1364 tstats->fw_total_fwd = rsp_tstats->fw_total_fwd;
1365 tstats->fw_total_mcast_sent = rsp_tstats->fw_total_mcast_sent;
1366 tstats->fw_total_bcast_sent = rsp_tstats->fw_total_bcast_sent;
1367 tstats->fw_err_pko = rsp_tstats->fw_err_pko;
1368 tstats->fw_err_pki = rsp_tstats->fw_err_pki;
1369 tstats->fw_err_link = rsp_tstats->fw_err_link;
1370 tstats->fw_err_drop = rsp_tstats->fw_err_drop;
1371 tstats->fw_tso = rsp_tstats->fw_tso;
1372 tstats->fw_tso_fwd = rsp_tstats->fw_tso_fwd;
1373 tstats->fw_err_tso = rsp_tstats->fw_err_tso;
1374 tstats->fw_tx_vxlan = rsp_tstats->fw_tx_vxlan;
1375
1376 resp->status = 1;
1377 } else {
1378 dev_err(&oct_dev->pci_dev->dev, "sc OPCODE_NIC_PORT_STATS command failed\n");
1379 resp->status = -1;
1380 }
1381 }
1382
lio_fetch_vf_stats(struct lio * lio)1383 static int lio_fetch_vf_stats(struct lio *lio)
1384 {
1385 struct octeon_device *oct_dev = lio->oct_dev;
1386 struct octeon_soft_command *sc;
1387 struct oct_nic_vf_stats_resp *resp;
1388
1389 int retval;
1390
1391 /* Alloc soft command */
1392 sc = (struct octeon_soft_command *)
1393 octeon_alloc_soft_command(oct_dev,
1394 0,
1395 sizeof(struct oct_nic_vf_stats_resp),
1396 0);
1397
1398 if (!sc) {
1399 dev_err(&oct_dev->pci_dev->dev, "Soft command allocation failed\n");
1400 retval = -ENOMEM;
1401 goto lio_fetch_vf_stats_exit;
1402 }
1403
1404 resp = (struct oct_nic_vf_stats_resp *)sc->virtrptr;
1405 memset(resp, 0, sizeof(struct oct_nic_vf_stats_resp));
1406
1407 init_completion(&sc->complete);
1408 sc->sc_status = OCTEON_REQUEST_PENDING;
1409
1410 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
1411
1412 octeon_prepare_soft_command(oct_dev, sc, OPCODE_NIC,
1413 OPCODE_NIC_VF_PORT_STATS, 0, 0, 0);
1414
1415 retval = octeon_send_soft_command(oct_dev, sc);
1416 if (retval == IQ_SEND_FAILED) {
1417 octeon_free_soft_command(oct_dev, sc);
1418 goto lio_fetch_vf_stats_exit;
1419 }
1420
1421 retval =
1422 wait_for_sc_completion_timeout(oct_dev, sc,
1423 (2 * LIO_SC_MAX_TMO_MS));
1424 if (retval) {
1425 dev_err(&oct_dev->pci_dev->dev,
1426 "sc OPCODE_NIC_VF_PORT_STATS command failed\n");
1427 goto lio_fetch_vf_stats_exit;
1428 }
1429
1430 if (sc->sc_status != OCTEON_REQUEST_TIMEOUT && !resp->status) {
1431 octeon_swap_8B_data((u64 *)&resp->spoofmac_cnt,
1432 (sizeof(u64)) >> 3);
1433
1434 if (resp->spoofmac_cnt != 0) {
1435 dev_warn(&oct_dev->pci_dev->dev,
1436 "%llu Spoofed packets detected\n",
1437 resp->spoofmac_cnt);
1438 }
1439 }
1440 WRITE_ONCE(sc->caller_is_done, 1);
1441
1442 lio_fetch_vf_stats_exit:
1443 return retval;
1444 }
1445
lio_fetch_stats(struct work_struct * work)1446 void lio_fetch_stats(struct work_struct *work)
1447 {
1448 struct cavium_wk *wk = (struct cavium_wk *)work;
1449 struct lio *lio = wk->ctxptr;
1450 struct octeon_device *oct_dev = lio->oct_dev;
1451 struct octeon_soft_command *sc;
1452 struct oct_nic_stats_resp *resp;
1453 unsigned long time_in_jiffies;
1454 int retval;
1455
1456 if (OCTEON_CN23XX_PF(oct_dev)) {
1457 /* report spoofchk every 2 seconds */
1458 if (!(oct_dev->vfstats_poll % LIO_VFSTATS_POLL) &&
1459 (oct_dev->fw_info.app_cap_flags & LIQUIDIO_SPOOFCHK_CAP) &&
1460 oct_dev->sriov_info.num_vfs_alloced) {
1461 lio_fetch_vf_stats(lio);
1462 }
1463
1464 oct_dev->vfstats_poll++;
1465 }
1466
1467 /* Alloc soft command */
1468 sc = (struct octeon_soft_command *)
1469 octeon_alloc_soft_command(oct_dev,
1470 0,
1471 sizeof(struct oct_nic_stats_resp),
1472 0);
1473
1474 if (!sc) {
1475 dev_err(&oct_dev->pci_dev->dev, "Soft command allocation failed\n");
1476 goto lio_fetch_stats_exit;
1477 }
1478
1479 resp = (struct oct_nic_stats_resp *)sc->virtrptr;
1480 memset(resp, 0, sizeof(struct oct_nic_stats_resp));
1481
1482 init_completion(&sc->complete);
1483 sc->sc_status = OCTEON_REQUEST_PENDING;
1484
1485 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
1486
1487 octeon_prepare_soft_command(oct_dev, sc, OPCODE_NIC,
1488 OPCODE_NIC_PORT_STATS, 0, 0, 0);
1489
1490 retval = octeon_send_soft_command(oct_dev, sc);
1491 if (retval == IQ_SEND_FAILED) {
1492 octeon_free_soft_command(oct_dev, sc);
1493 goto lio_fetch_stats_exit;
1494 }
1495
1496 retval = wait_for_sc_completion_timeout(oct_dev, sc,
1497 (2 * LIO_SC_MAX_TMO_MS));
1498 if (retval) {
1499 dev_err(&oct_dev->pci_dev->dev, "sc OPCODE_NIC_PORT_STATS command failed\n");
1500 goto lio_fetch_stats_exit;
1501 }
1502
1503 octnet_nic_stats_callback(oct_dev, sc->sc_status, sc);
1504 WRITE_ONCE(sc->caller_is_done, true);
1505
1506 lio_fetch_stats_exit:
1507 time_in_jiffies = msecs_to_jiffies(LIQUIDIO_NDEV_STATS_POLL_TIME_MS);
1508 if (ifstate_check(lio, LIO_IFSTATE_RUNNING))
1509 schedule_delayed_work(&lio->stats_wk.work, time_in_jiffies);
1510
1511 return;
1512 }
1513
liquidio_set_speed(struct lio * lio,int speed)1514 int liquidio_set_speed(struct lio *lio, int speed)
1515 {
1516 struct octeon_device *oct = lio->oct_dev;
1517 struct oct_nic_seapi_resp *resp;
1518 struct octeon_soft_command *sc;
1519 union octnet_cmd *ncmd;
1520 int retval;
1521 u32 var;
1522
1523 if (oct->speed_setting == speed)
1524 return 0;
1525
1526 if (!OCTEON_CN23XX_PF(oct)) {
1527 dev_err(&oct->pci_dev->dev, "%s: SET SPEED only for PF\n",
1528 __func__);
1529 return -EOPNOTSUPP;
1530 }
1531
1532 sc = octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE,
1533 sizeof(struct oct_nic_seapi_resp),
1534 0);
1535 if (!sc)
1536 return -ENOMEM;
1537
1538 ncmd = sc->virtdptr;
1539 resp = sc->virtrptr;
1540 memset(resp, 0, sizeof(struct oct_nic_seapi_resp));
1541
1542 init_completion(&sc->complete);
1543 sc->sc_status = OCTEON_REQUEST_PENDING;
1544
1545 ncmd->u64 = 0;
1546 ncmd->s.cmd = SEAPI_CMD_SPEED_SET;
1547 ncmd->s.param1 = speed;
1548
1549 octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3));
1550
1551 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
1552
1553 octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
1554 OPCODE_NIC_UBOOT_CTL, 0, 0, 0);
1555
1556 retval = octeon_send_soft_command(oct, sc);
1557 if (retval == IQ_SEND_FAILED) {
1558 dev_info(&oct->pci_dev->dev, "Failed to send soft command\n");
1559 octeon_free_soft_command(oct, sc);
1560 retval = -EBUSY;
1561 } else {
1562 /* Wait for response or timeout */
1563 retval = wait_for_sc_completion_timeout(oct, sc, 0);
1564 if (retval)
1565 return retval;
1566
1567 retval = resp->status;
1568
1569 if (retval) {
1570 dev_err(&oct->pci_dev->dev, "%s failed, retval=%d\n",
1571 __func__, retval);
1572 WRITE_ONCE(sc->caller_is_done, true);
1573
1574 return -EIO;
1575 }
1576
1577 var = be32_to_cpu((__force __be32)resp->speed);
1578 if (var != speed) {
1579 dev_err(&oct->pci_dev->dev,
1580 "%s: setting failed speed= %x, expect %x\n",
1581 __func__, var, speed);
1582 }
1583
1584 oct->speed_setting = var;
1585 WRITE_ONCE(sc->caller_is_done, true);
1586 }
1587
1588 return retval;
1589 }
1590
liquidio_get_speed(struct lio * lio)1591 int liquidio_get_speed(struct lio *lio)
1592 {
1593 struct octeon_device *oct = lio->oct_dev;
1594 struct oct_nic_seapi_resp *resp;
1595 struct octeon_soft_command *sc;
1596 union octnet_cmd *ncmd;
1597 int retval;
1598
1599 sc = octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE,
1600 sizeof(struct oct_nic_seapi_resp),
1601 0);
1602 if (!sc)
1603 return -ENOMEM;
1604
1605 ncmd = sc->virtdptr;
1606 resp = sc->virtrptr;
1607 memset(resp, 0, sizeof(struct oct_nic_seapi_resp));
1608
1609 init_completion(&sc->complete);
1610 sc->sc_status = OCTEON_REQUEST_PENDING;
1611
1612 ncmd->u64 = 0;
1613 ncmd->s.cmd = SEAPI_CMD_SPEED_GET;
1614
1615 octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3));
1616
1617 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
1618
1619 octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
1620 OPCODE_NIC_UBOOT_CTL, 0, 0, 0);
1621
1622 retval = octeon_send_soft_command(oct, sc);
1623 if (retval == IQ_SEND_FAILED) {
1624 dev_info(&oct->pci_dev->dev, "Failed to send soft command\n");
1625 octeon_free_soft_command(oct, sc);
1626 retval = -EIO;
1627 } else {
1628 retval = wait_for_sc_completion_timeout(oct, sc, 0);
1629 if (retval)
1630 return retval;
1631
1632 retval = resp->status;
1633 if (retval) {
1634 dev_err(&oct->pci_dev->dev,
1635 "%s failed retval=%d\n", __func__, retval);
1636 retval = -EIO;
1637 } else {
1638 u32 var;
1639
1640 var = be32_to_cpu((__force __be32)resp->speed);
1641 oct->speed_setting = var;
1642 if (var == 0xffff) {
1643 /* unable to access boot variables
1644 * get the default value based on the NIC type
1645 */
1646 if (oct->subsystem_id ==
1647 OCTEON_CN2350_25GB_SUBSYS_ID ||
1648 oct->subsystem_id ==
1649 OCTEON_CN2360_25GB_SUBSYS_ID) {
1650 oct->no_speed_setting = 1;
1651 oct->speed_setting = 25;
1652 } else {
1653 oct->speed_setting = 10;
1654 }
1655 }
1656
1657 }
1658 WRITE_ONCE(sc->caller_is_done, true);
1659 }
1660
1661 return retval;
1662 }
1663
liquidio_set_fec(struct lio * lio,int on_off)1664 int liquidio_set_fec(struct lio *lio, int on_off)
1665 {
1666 struct oct_nic_seapi_resp *resp;
1667 struct octeon_soft_command *sc;
1668 struct octeon_device *oct;
1669 union octnet_cmd *ncmd;
1670 int retval;
1671 u32 var;
1672
1673 oct = lio->oct_dev;
1674
1675 if (oct->props[lio->ifidx].fec == on_off)
1676 return 0;
1677
1678 if (!OCTEON_CN23XX_PF(oct)) {
1679 dev_err(&oct->pci_dev->dev, "%s: SET FEC only for PF\n",
1680 __func__);
1681 return -1;
1682 }
1683
1684 if (oct->speed_boot != 25) {
1685 dev_err(&oct->pci_dev->dev,
1686 "Set FEC only when link speed is 25G during insmod\n");
1687 return -1;
1688 }
1689
1690 sc = octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE,
1691 sizeof(struct oct_nic_seapi_resp), 0);
1692 if (!sc) {
1693 dev_err(&oct->pci_dev->dev,
1694 "Failed to allocate soft command\n");
1695 return -ENOMEM;
1696 }
1697
1698 ncmd = sc->virtdptr;
1699 resp = sc->virtrptr;
1700 memset(resp, 0, sizeof(struct oct_nic_seapi_resp));
1701
1702 init_completion(&sc->complete);
1703 sc->sc_status = OCTEON_REQUEST_PENDING;
1704
1705 ncmd->u64 = 0;
1706 ncmd->s.cmd = SEAPI_CMD_FEC_SET;
1707 ncmd->s.param1 = on_off;
1708 /* SEAPI_CMD_FEC_DISABLE(0) or SEAPI_CMD_FEC_RS(1) */
1709
1710 octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3));
1711
1712 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
1713
1714 octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
1715 OPCODE_NIC_UBOOT_CTL, 0, 0, 0);
1716
1717 retval = octeon_send_soft_command(oct, sc);
1718 if (retval == IQ_SEND_FAILED) {
1719 dev_info(&oct->pci_dev->dev, "Failed to send soft command\n");
1720 octeon_free_soft_command(oct, sc);
1721 return -EIO;
1722 }
1723
1724 retval = wait_for_sc_completion_timeout(oct, sc, 0);
1725 if (retval)
1726 return (-EIO);
1727
1728 var = be32_to_cpu(resp->fec_setting);
1729 resp->fec_setting = var;
1730 if (var != on_off) {
1731 dev_err(&oct->pci_dev->dev,
1732 "Setting failed fec= %x, expect %x\n",
1733 var, on_off);
1734 oct->props[lio->ifidx].fec = var;
1735 if (resp->fec_setting == SEAPI_CMD_FEC_SET_RS)
1736 oct->props[lio->ifidx].fec = 1;
1737 else
1738 oct->props[lio->ifidx].fec = 0;
1739 }
1740
1741 WRITE_ONCE(sc->caller_is_done, true);
1742
1743 if (oct->props[lio->ifidx].fec !=
1744 oct->props[lio->ifidx].fec_boot) {
1745 dev_dbg(&oct->pci_dev->dev,
1746 "Reload driver to change fec to %s\n",
1747 oct->props[lio->ifidx].fec ? "on" : "off");
1748 }
1749
1750 return retval;
1751 }
1752
liquidio_get_fec(struct lio * lio)1753 int liquidio_get_fec(struct lio *lio)
1754 {
1755 struct oct_nic_seapi_resp *resp;
1756 struct octeon_soft_command *sc;
1757 struct octeon_device *oct;
1758 union octnet_cmd *ncmd;
1759 int retval;
1760 u32 var;
1761
1762 oct = lio->oct_dev;
1763
1764 sc = octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE,
1765 sizeof(struct oct_nic_seapi_resp), 0);
1766 if (!sc)
1767 return -ENOMEM;
1768
1769 ncmd = sc->virtdptr;
1770 resp = sc->virtrptr;
1771 memset(resp, 0, sizeof(struct oct_nic_seapi_resp));
1772
1773 init_completion(&sc->complete);
1774 sc->sc_status = OCTEON_REQUEST_PENDING;
1775
1776 ncmd->u64 = 0;
1777 ncmd->s.cmd = SEAPI_CMD_FEC_GET;
1778
1779 octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3));
1780
1781 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
1782
1783 octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
1784 OPCODE_NIC_UBOOT_CTL, 0, 0, 0);
1785
1786 retval = octeon_send_soft_command(oct, sc);
1787 if (retval == IQ_SEND_FAILED) {
1788 dev_info(&oct->pci_dev->dev,
1789 "%s: Failed to send soft command\n", __func__);
1790 octeon_free_soft_command(oct, sc);
1791 return -EIO;
1792 }
1793
1794 retval = wait_for_sc_completion_timeout(oct, sc, 0);
1795 if (retval)
1796 return retval;
1797
1798 var = be32_to_cpu(resp->fec_setting);
1799 resp->fec_setting = var;
1800 if (resp->fec_setting == SEAPI_CMD_FEC_SET_RS)
1801 oct->props[lio->ifidx].fec = 1;
1802 else
1803 oct->props[lio->ifidx].fec = 0;
1804
1805 WRITE_ONCE(sc->caller_is_done, true);
1806
1807 if (oct->props[lio->ifidx].fec !=
1808 oct->props[lio->ifidx].fec_boot) {
1809 dev_dbg(&oct->pci_dev->dev,
1810 "Reload driver to change fec to %s\n",
1811 oct->props[lio->ifidx].fec ? "on" : "off");
1812 }
1813
1814 return retval;
1815 }
1816
