1 // SPDX-License-Identifier: GPL-2.0
2 /* Marvell RVU Virtual Function ethernet driver
3 *
4 * Copyright (C) 2020 Marvell.
5 *
6 */
7
8 #include <linux/etherdevice.h>
9 #include <linux/module.h>
10 #include <linux/pci.h>
11 #include <linux/net_tstamp.h>
12
13 #include "otx2_common.h"
14 #include "otx2_reg.h"
15 #include "otx2_ptp.h"
16 #include "cn10k.h"
17
18 #define DRV_NAME "rvu_nicvf"
19 #define DRV_STRING "Marvell RVU NIC Virtual Function Driver"
20
21 static const struct pci_device_id otx2_vf_id_table[] = {
22 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_RVU_AFVF) },
23 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_RVU_VF) },
24 { }
25 };
26
27 MODULE_AUTHOR("Sunil Goutham <sgoutham@marvell.com>");
28 MODULE_DESCRIPTION(DRV_STRING);
29 MODULE_LICENSE("GPL v2");
30 MODULE_DEVICE_TABLE(pci, otx2_vf_id_table);
31
32 /* RVU VF Interrupt Vector Enumeration */
33 enum {
34 RVU_VF_INT_VEC_MBOX = 0x0,
35 };
36
otx2vf_process_vfaf_mbox_msg(struct otx2_nic * vf,struct mbox_msghdr * msg)37 static void otx2vf_process_vfaf_mbox_msg(struct otx2_nic *vf,
38 struct mbox_msghdr *msg)
39 {
40 if (msg->id >= MBOX_MSG_MAX) {
41 dev_err(vf->dev,
42 "Mbox msg with unknown ID %d\n", msg->id);
43 return;
44 }
45
46 if (msg->sig != OTX2_MBOX_RSP_SIG) {
47 dev_err(vf->dev,
48 "Mbox msg with wrong signature %x, ID %d\n",
49 msg->sig, msg->id);
50 return;
51 }
52
53 if (msg->rc == MBOX_MSG_INVALID) {
54 dev_err(vf->dev,
55 "PF/AF says the sent msg(s) %d were invalid\n",
56 msg->id);
57 return;
58 }
59
60 switch (msg->id) {
61 case MBOX_MSG_READY:
62 vf->pcifunc = msg->pcifunc;
63 break;
64 case MBOX_MSG_MSIX_OFFSET:
65 mbox_handler_msix_offset(vf, (struct msix_offset_rsp *)msg);
66 break;
67 case MBOX_MSG_NPA_LF_ALLOC:
68 mbox_handler_npa_lf_alloc(vf, (struct npa_lf_alloc_rsp *)msg);
69 break;
70 case MBOX_MSG_NIX_LF_ALLOC:
71 mbox_handler_nix_lf_alloc(vf, (struct nix_lf_alloc_rsp *)msg);
72 break;
73 case MBOX_MSG_NIX_BP_ENABLE:
74 mbox_handler_nix_bp_enable(vf, (struct nix_bp_cfg_rsp *)msg);
75 break;
76 default:
77 if (msg->rc)
78 dev_err(vf->dev,
79 "Mbox msg response has err %d, ID %d\n",
80 msg->rc, msg->id);
81 }
82 }
83
otx2vf_vfaf_mbox_handler(struct work_struct * work)84 static void otx2vf_vfaf_mbox_handler(struct work_struct *work)
85 {
86 struct otx2_mbox_dev *mdev;
87 struct mbox_hdr *rsp_hdr;
88 struct mbox_msghdr *msg;
89 struct otx2_mbox *mbox;
90 struct mbox *af_mbox;
91 int offset, id;
92 u16 num_msgs;
93
94 af_mbox = container_of(work, struct mbox, mbox_wrk);
95 mbox = &af_mbox->mbox;
96 mdev = &mbox->dev[0];
97 rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
98 num_msgs = rsp_hdr->num_msgs;
99
100 if (num_msgs == 0)
101 return;
102
103 offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN);
104
105 for (id = 0; id < num_msgs; id++) {
106 msg = (struct mbox_msghdr *)(mdev->mbase + offset);
107 otx2vf_process_vfaf_mbox_msg(af_mbox->pfvf, msg);
108 offset = mbox->rx_start + msg->next_msgoff;
109 if (mdev->msgs_acked == (af_mbox->num_msgs - 1))
110 __otx2_mbox_reset(mbox, 0);
111 mdev->msgs_acked++;
112 }
113 }
114
otx2vf_process_mbox_msg_up(struct otx2_nic * vf,struct mbox_msghdr * req)115 static int otx2vf_process_mbox_msg_up(struct otx2_nic *vf,
116 struct mbox_msghdr *req)
117 {
118 struct msg_rsp *rsp;
119 int err;
120
121 /* Check if valid, if not reply with a invalid msg */
122 if (req->sig != OTX2_MBOX_REQ_SIG) {
123 otx2_reply_invalid_msg(&vf->mbox.mbox_up, 0, 0, req->id);
124 return -ENODEV;
125 }
126
127 switch (req->id) {
128 case MBOX_MSG_CGX_LINK_EVENT:
129 rsp = (struct msg_rsp *)otx2_mbox_alloc_msg(
130 &vf->mbox.mbox_up, 0,
131 sizeof(struct msg_rsp));
132 if (!rsp)
133 return -ENOMEM;
134
135 rsp->hdr.id = MBOX_MSG_CGX_LINK_EVENT;
136 rsp->hdr.sig = OTX2_MBOX_RSP_SIG;
137 rsp->hdr.pcifunc = 0;
138 rsp->hdr.rc = 0;
139 err = otx2_mbox_up_handler_cgx_link_event(
140 vf, (struct cgx_link_info_msg *)req, rsp);
141 return err;
142 default:
143 otx2_reply_invalid_msg(&vf->mbox.mbox_up, 0, 0, req->id);
144 return -ENODEV;
145 }
146 return 0;
147 }
148
otx2vf_vfaf_mbox_up_handler(struct work_struct * work)149 static void otx2vf_vfaf_mbox_up_handler(struct work_struct *work)
150 {
151 struct otx2_mbox_dev *mdev;
152 struct mbox_hdr *rsp_hdr;
153 struct mbox_msghdr *msg;
154 struct otx2_mbox *mbox;
155 struct mbox *vf_mbox;
156 struct otx2_nic *vf;
157 int offset, id;
158 u16 num_msgs;
159
160 vf_mbox = container_of(work, struct mbox, mbox_up_wrk);
161 vf = vf_mbox->pfvf;
162 mbox = &vf_mbox->mbox_up;
163 mdev = &mbox->dev[0];
164
165 rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
166 num_msgs = rsp_hdr->num_msgs;
167
168 if (num_msgs == 0)
169 return;
170
171 offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN);
172
173 for (id = 0; id < num_msgs; id++) {
174 msg = (struct mbox_msghdr *)(mdev->mbase + offset);
175 otx2vf_process_mbox_msg_up(vf, msg);
176 offset = mbox->rx_start + msg->next_msgoff;
177 }
178
179 otx2_mbox_msg_send(mbox, 0);
180 }
181
otx2vf_vfaf_mbox_intr_handler(int irq,void * vf_irq)182 static irqreturn_t otx2vf_vfaf_mbox_intr_handler(int irq, void *vf_irq)
183 {
184 struct otx2_nic *vf = (struct otx2_nic *)vf_irq;
185 struct otx2_mbox_dev *mdev;
186 struct otx2_mbox *mbox;
187 struct mbox_hdr *hdr;
188 u64 mbox_data;
189
190 /* Clear the IRQ */
191 otx2_write64(vf, RVU_VF_INT, BIT_ULL(0));
192
193 mbox_data = otx2_read64(vf, RVU_VF_VFPF_MBOX0);
194
195 /* Read latest mbox data */
196 smp_rmb();
197
198 if (mbox_data & MBOX_DOWN_MSG) {
199 mbox_data &= ~MBOX_DOWN_MSG;
200 otx2_write64(vf, RVU_VF_VFPF_MBOX0, mbox_data);
201
202 /* Check for PF => VF response messages */
203 mbox = &vf->mbox.mbox;
204 mdev = &mbox->dev[0];
205 otx2_sync_mbox_bbuf(mbox, 0);
206
207 hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
208 if (hdr->num_msgs)
209 queue_work(vf->mbox_wq, &vf->mbox.mbox_wrk);
210
211 trace_otx2_msg_interrupt(mbox->pdev, "DOWN reply from PF to VF",
212 BIT_ULL(0));
213 }
214
215 if (mbox_data & MBOX_UP_MSG) {
216 mbox_data &= ~MBOX_UP_MSG;
217 otx2_write64(vf, RVU_VF_VFPF_MBOX0, mbox_data);
218
219 /* Check for PF => VF notification messages */
220 mbox = &vf->mbox.mbox_up;
221 mdev = &mbox->dev[0];
222 otx2_sync_mbox_bbuf(mbox, 0);
223
224 hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start);
225 if (hdr->num_msgs)
226 queue_work(vf->mbox_wq, &vf->mbox.mbox_up_wrk);
227
228 trace_otx2_msg_interrupt(mbox->pdev, "UP message from PF to VF",
229 BIT_ULL(0));
230 }
231
232 return IRQ_HANDLED;
233 }
234
otx2vf_disable_mbox_intr(struct otx2_nic * vf)235 static void otx2vf_disable_mbox_intr(struct otx2_nic *vf)
236 {
237 int vector = pci_irq_vector(vf->pdev, RVU_VF_INT_VEC_MBOX);
238
239 /* Disable VF => PF mailbox IRQ */
240 otx2_write64(vf, RVU_VF_INT_ENA_W1C, BIT_ULL(0));
241 free_irq(vector, vf);
242 }
243
otx2vf_register_mbox_intr(struct otx2_nic * vf,bool probe_pf)244 static int otx2vf_register_mbox_intr(struct otx2_nic *vf, bool probe_pf)
245 {
246 struct otx2_hw *hw = &vf->hw;
247 struct msg_req *req;
248 char *irq_name;
249 int err;
250
251 /* Register mailbox interrupt handler */
252 irq_name = &hw->irq_name[RVU_VF_INT_VEC_MBOX * NAME_SIZE];
253 snprintf(irq_name, NAME_SIZE, "RVUVFAF Mbox");
254 err = request_irq(pci_irq_vector(vf->pdev, RVU_VF_INT_VEC_MBOX),
255 otx2vf_vfaf_mbox_intr_handler, 0, irq_name, vf);
256 if (err) {
257 dev_err(vf->dev,
258 "RVUPF: IRQ registration failed for VFAF mbox irq\n");
259 return err;
260 }
261
262 /* Enable mailbox interrupt for msgs coming from PF.
263 * First clear to avoid spurious interrupts, if any.
264 */
265 otx2_write64(vf, RVU_VF_INT, BIT_ULL(0));
266 otx2_write64(vf, RVU_VF_INT_ENA_W1S, BIT_ULL(0));
267
268 if (!probe_pf)
269 return 0;
270
271 /* Check mailbox communication with PF */
272 req = otx2_mbox_alloc_msg_ready(&vf->mbox);
273 if (!req) {
274 otx2vf_disable_mbox_intr(vf);
275 return -ENOMEM;
276 }
277
278 err = otx2_sync_mbox_msg(&vf->mbox);
279 if (err) {
280 dev_warn(vf->dev,
281 "AF not responding to mailbox, deferring probe\n");
282 otx2vf_disable_mbox_intr(vf);
283 return -EPROBE_DEFER;
284 }
285 return 0;
286 }
287
otx2vf_vfaf_mbox_destroy(struct otx2_nic * vf)288 static void otx2vf_vfaf_mbox_destroy(struct otx2_nic *vf)
289 {
290 struct mbox *mbox = &vf->mbox;
291
292 if (vf->mbox_wq) {
293 destroy_workqueue(vf->mbox_wq);
294 vf->mbox_wq = NULL;
295 }
296
297 if (mbox->mbox.hwbase && !test_bit(CN10K_MBOX, &vf->hw.cap_flag))
298 iounmap((void __iomem *)mbox->mbox.hwbase);
299
300 otx2_mbox_destroy(&mbox->mbox);
301 otx2_mbox_destroy(&mbox->mbox_up);
302 }
303
otx2vf_vfaf_mbox_init(struct otx2_nic * vf)304 static int otx2vf_vfaf_mbox_init(struct otx2_nic *vf)
305 {
306 struct mbox *mbox = &vf->mbox;
307 void __iomem *hwbase;
308 int err;
309
310 mbox->pfvf = vf;
311 vf->mbox_wq = alloc_ordered_workqueue("otx2_vfaf_mailbox",
312 WQ_HIGHPRI | WQ_MEM_RECLAIM);
313 if (!vf->mbox_wq)
314 return -ENOMEM;
315
316 if (test_bit(CN10K_MBOX, &vf->hw.cap_flag)) {
317 /* For cn10k platform, VF mailbox region is in its BAR2
318 * register space
319 */
320 hwbase = vf->reg_base + RVU_VF_MBOX_REGION;
321 } else {
322 /* Mailbox is a reserved memory (in RAM) region shared between
323 * admin function (i.e PF0) and this VF, shouldn't be mapped as
324 * device memory to allow unaligned accesses.
325 */
326 hwbase = ioremap_wc(pci_resource_start(vf->pdev,
327 PCI_MBOX_BAR_NUM),
328 pci_resource_len(vf->pdev,
329 PCI_MBOX_BAR_NUM));
330 if (!hwbase) {
331 dev_err(vf->dev, "Unable to map VFAF mailbox region\n");
332 err = -ENOMEM;
333 goto exit;
334 }
335 }
336
337 err = otx2_mbox_init(&mbox->mbox, hwbase, vf->pdev, vf->reg_base,
338 MBOX_DIR_VFPF, 1);
339 if (err)
340 goto exit;
341
342 err = otx2_mbox_init(&mbox->mbox_up, hwbase, vf->pdev, vf->reg_base,
343 MBOX_DIR_VFPF_UP, 1);
344 if (err)
345 goto exit;
346
347 err = otx2_mbox_bbuf_init(mbox, vf->pdev);
348 if (err)
349 goto exit;
350
351 INIT_WORK(&mbox->mbox_wrk, otx2vf_vfaf_mbox_handler);
352 INIT_WORK(&mbox->mbox_up_wrk, otx2vf_vfaf_mbox_up_handler);
353 mutex_init(&mbox->lock);
354
355 return 0;
356 exit:
357 if (hwbase && !test_bit(CN10K_MBOX, &vf->hw.cap_flag))
358 iounmap(hwbase);
359 destroy_workqueue(vf->mbox_wq);
360 return err;
361 }
362
otx2vf_open(struct net_device * netdev)363 static int otx2vf_open(struct net_device *netdev)
364 {
365 struct otx2_nic *vf;
366 int err;
367
368 err = otx2_open(netdev);
369 if (err)
370 return err;
371
372 /* LBKs do not receive link events so tell everyone we are up here */
373 vf = netdev_priv(netdev);
374 if (is_otx2_lbkvf(vf->pdev)) {
375 pr_info("%s NIC Link is UP\n", netdev->name);
376 netif_carrier_on(netdev);
377 netif_tx_start_all_queues(netdev);
378 }
379
380 return 0;
381 }
382
otx2vf_stop(struct net_device * netdev)383 static int otx2vf_stop(struct net_device *netdev)
384 {
385 return otx2_stop(netdev);
386 }
387
otx2vf_xmit(struct sk_buff * skb,struct net_device * netdev)388 static netdev_tx_t otx2vf_xmit(struct sk_buff *skb, struct net_device *netdev)
389 {
390 struct otx2_nic *vf = netdev_priv(netdev);
391 int qidx = skb_get_queue_mapping(skb);
392 struct otx2_snd_queue *sq;
393 struct netdev_queue *txq;
394
395 sq = &vf->qset.sq[qidx];
396 txq = netdev_get_tx_queue(netdev, qidx);
397
398 if (!otx2_sq_append_skb(netdev, sq, skb, qidx)) {
399 netif_tx_stop_queue(txq);
400
401 /* Check again, incase SQBs got freed up */
402 smp_mb();
403 if (((sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb)
404 > sq->sqe_thresh)
405 netif_tx_wake_queue(txq);
406
407 return NETDEV_TX_BUSY;
408 }
409
410 return NETDEV_TX_OK;
411 }
412
otx2vf_set_rx_mode(struct net_device * netdev)413 static void otx2vf_set_rx_mode(struct net_device *netdev)
414 {
415 struct otx2_nic *vf = netdev_priv(netdev);
416
417 queue_work(vf->otx2_wq, &vf->rx_mode_work);
418 }
419
otx2vf_do_set_rx_mode(struct work_struct * work)420 static void otx2vf_do_set_rx_mode(struct work_struct *work)
421 {
422 struct otx2_nic *vf = container_of(work, struct otx2_nic, rx_mode_work);
423 struct net_device *netdev = vf->netdev;
424 unsigned int flags = netdev->flags;
425 struct nix_rx_mode *req;
426
427 mutex_lock(&vf->mbox.lock);
428
429 req = otx2_mbox_alloc_msg_nix_set_rx_mode(&vf->mbox);
430 if (!req) {
431 mutex_unlock(&vf->mbox.lock);
432 return;
433 }
434
435 req->mode = NIX_RX_MODE_UCAST;
436
437 if (flags & IFF_PROMISC)
438 req->mode |= NIX_RX_MODE_PROMISC;
439 if (flags & (IFF_ALLMULTI | IFF_MULTICAST))
440 req->mode |= NIX_RX_MODE_ALLMULTI;
441
442 req->mode |= NIX_RX_MODE_USE_MCE;
443
444 otx2_sync_mbox_msg(&vf->mbox);
445
446 mutex_unlock(&vf->mbox.lock);
447 }
448
otx2vf_change_mtu(struct net_device * netdev,int new_mtu)449 static int otx2vf_change_mtu(struct net_device *netdev, int new_mtu)
450 {
451 bool if_up = netif_running(netdev);
452 int err = 0;
453
454 if (if_up)
455 otx2vf_stop(netdev);
456
457 netdev_info(netdev, "Changing MTU from %d to %d\n",
458 netdev->mtu, new_mtu);
459 WRITE_ONCE(netdev->mtu, new_mtu);
460
461 if (if_up)
462 err = otx2vf_open(netdev);
463
464 return err;
465 }
466
otx2vf_reset_task(struct work_struct * work)467 static void otx2vf_reset_task(struct work_struct *work)
468 {
469 struct otx2_nic *vf = container_of(work, struct otx2_nic, reset_task);
470
471 rtnl_lock();
472
473 if (netif_running(vf->netdev)) {
474 otx2vf_stop(vf->netdev);
475 vf->reset_count++;
476 otx2vf_open(vf->netdev);
477 }
478
479 rtnl_unlock();
480 }
481
otx2vf_set_features(struct net_device * netdev,netdev_features_t features)482 static int otx2vf_set_features(struct net_device *netdev,
483 netdev_features_t features)
484 {
485 return otx2_handle_ntuple_tc_features(netdev, features);
486 }
487
488 static const struct net_device_ops otx2vf_netdev_ops = {
489 .ndo_open = otx2vf_open,
490 .ndo_stop = otx2vf_stop,
491 .ndo_start_xmit = otx2vf_xmit,
492 .ndo_select_queue = otx2_select_queue,
493 .ndo_set_rx_mode = otx2vf_set_rx_mode,
494 .ndo_set_mac_address = otx2_set_mac_address,
495 .ndo_change_mtu = otx2vf_change_mtu,
496 .ndo_set_features = otx2vf_set_features,
497 .ndo_get_stats64 = otx2_get_stats64,
498 .ndo_tx_timeout = otx2_tx_timeout,
499 .ndo_eth_ioctl = otx2_ioctl,
500 .ndo_setup_tc = otx2_setup_tc,
501 };
502
otx2_wq_init(struct otx2_nic * vf)503 static int otx2_wq_init(struct otx2_nic *vf)
504 {
505 vf->otx2_wq = create_singlethread_workqueue("otx2vf_wq");
506 if (!vf->otx2_wq)
507 return -ENOMEM;
508
509 INIT_WORK(&vf->rx_mode_work, otx2vf_do_set_rx_mode);
510 INIT_WORK(&vf->reset_task, otx2vf_reset_task);
511 return 0;
512 }
513
otx2vf_realloc_msix_vectors(struct otx2_nic * vf)514 static int otx2vf_realloc_msix_vectors(struct otx2_nic *vf)
515 {
516 struct otx2_hw *hw = &vf->hw;
517 int num_vec, err;
518
519 num_vec = hw->nix_msixoff;
520 num_vec += NIX_LF_CINT_VEC_START + hw->max_queues;
521
522 otx2vf_disable_mbox_intr(vf);
523 pci_free_irq_vectors(hw->pdev);
524 err = pci_alloc_irq_vectors(hw->pdev, num_vec, num_vec, PCI_IRQ_MSIX);
525 if (err < 0) {
526 dev_err(vf->dev, "%s: Failed to realloc %d IRQ vectors\n",
527 __func__, num_vec);
528 return err;
529 }
530
531 return otx2vf_register_mbox_intr(vf, false);
532 }
533
otx2vf_probe(struct pci_dev * pdev,const struct pci_device_id * id)534 static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
535 {
536 int num_vec = pci_msix_vec_count(pdev);
537 struct device *dev = &pdev->dev;
538 int err, qcount, qos_txqs;
539 struct net_device *netdev;
540 struct otx2_nic *vf;
541 struct otx2_hw *hw;
542
543 err = pcim_enable_device(pdev);
544 if (err) {
545 dev_err(dev, "Failed to enable PCI device\n");
546 return err;
547 }
548
549 err = pci_request_regions(pdev, DRV_NAME);
550 if (err) {
551 dev_err(dev, "PCI request regions failed 0x%x\n", err);
552 return err;
553 }
554
555 err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48));
556 if (err) {
557 dev_err(dev, "DMA mask config failed, abort\n");
558 goto err_release_regions;
559 }
560
561 pci_set_master(pdev);
562
563 qcount = num_online_cpus();
564 qos_txqs = min_t(int, qcount, OTX2_QOS_MAX_LEAF_NODES);
565 netdev = alloc_etherdev_mqs(sizeof(*vf), qcount + qos_txqs, qcount);
566 if (!netdev) {
567 err = -ENOMEM;
568 goto err_release_regions;
569 }
570
571 pci_set_drvdata(pdev, netdev);
572 SET_NETDEV_DEV(netdev, &pdev->dev);
573 vf = netdev_priv(netdev);
574 vf->netdev = netdev;
575 vf->pdev = pdev;
576 vf->dev = dev;
577 vf->iommu_domain = iommu_get_domain_for_dev(dev);
578
579 vf->flags |= OTX2_FLAG_INTF_DOWN;
580 hw = &vf->hw;
581 hw->pdev = vf->pdev;
582 hw->rx_queues = qcount;
583 hw->tx_queues = qcount;
584 hw->max_queues = qcount;
585 hw->non_qos_queues = qcount;
586 hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN;
587 /* Use CQE of 128 byte descriptor size by default */
588 hw->xqe_size = 128;
589
590 hw->irq_name = devm_kmalloc_array(&hw->pdev->dev, num_vec, NAME_SIZE,
591 GFP_KERNEL);
592 if (!hw->irq_name) {
593 err = -ENOMEM;
594 goto err_free_netdev;
595 }
596
597 hw->affinity_mask = devm_kcalloc(&hw->pdev->dev, num_vec,
598 sizeof(cpumask_var_t), GFP_KERNEL);
599 if (!hw->affinity_mask) {
600 err = -ENOMEM;
601 goto err_free_netdev;
602 }
603
604 err = pci_alloc_irq_vectors(hw->pdev, num_vec, num_vec, PCI_IRQ_MSIX);
605 if (err < 0) {
606 dev_err(dev, "%s: Failed to alloc %d IRQ vectors\n",
607 __func__, num_vec);
608 goto err_free_netdev;
609 }
610
611 vf->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
612 if (!vf->reg_base) {
613 dev_err(dev, "Unable to map physical function CSRs, aborting\n");
614 err = -ENOMEM;
615 goto err_free_irq_vectors;
616 }
617
618 otx2_setup_dev_hw_settings(vf);
619 /* Init VF <=> PF mailbox stuff */
620 err = otx2vf_vfaf_mbox_init(vf);
621 if (err)
622 goto err_free_irq_vectors;
623
624 /* Register mailbox interrupt */
625 err = otx2vf_register_mbox_intr(vf, true);
626 if (err)
627 goto err_mbox_destroy;
628
629 /* Request AF to attach NPA and LIX LFs to this AF */
630 err = otx2_attach_npa_nix(vf);
631 if (err)
632 goto err_disable_mbox_intr;
633
634 err = otx2vf_realloc_msix_vectors(vf);
635 if (err)
636 goto err_detach_rsrc;
637
638 err = otx2_set_real_num_queues(netdev, qcount, qcount);
639 if (err)
640 goto err_detach_rsrc;
641
642 err = cn10k_lmtst_init(vf);
643 if (err)
644 goto err_detach_rsrc;
645
646 /* Don't check for error. Proceed without ptp */
647 otx2_ptp_init(vf);
648
649 /* Assign default mac address */
650 otx2_get_mac_from_af(netdev);
651
652 netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
653 NETIF_F_IPV6_CSUM | NETIF_F_RXHASH |
654 NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
655 NETIF_F_GSO_UDP_L4;
656 netdev->features = netdev->hw_features;
657 /* Support TSO on tag interface */
658 netdev->vlan_features |= netdev->features;
659 netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX |
660 NETIF_F_HW_VLAN_STAG_TX;
661 netdev->features |= netdev->hw_features;
662
663 netdev->hw_features |= NETIF_F_NTUPLE;
664 netdev->hw_features |= NETIF_F_RXALL;
665 netdev->hw_features |= NETIF_F_HW_TC;
666
667 netif_set_tso_max_segs(netdev, OTX2_MAX_GSO_SEGS);
668 netdev->watchdog_timeo = OTX2_TX_TIMEOUT;
669
670 netdev->netdev_ops = &otx2vf_netdev_ops;
671
672 netdev->min_mtu = OTX2_MIN_MTU;
673 netdev->max_mtu = otx2_get_max_mtu(vf);
674
675 /* To distinguish, for LBK VFs set netdev name explicitly */
676 if (is_otx2_lbkvf(vf->pdev)) {
677 int n;
678
679 n = (vf->pcifunc >> RVU_PFVF_FUNC_SHIFT) & RVU_PFVF_FUNC_MASK;
680 /* Need to subtract 1 to get proper VF number */
681 n -= 1;
682 snprintf(netdev->name, sizeof(netdev->name), "lbk%d", n);
683 }
684
685 err = register_netdev(netdev);
686 if (err) {
687 dev_err(dev, "Failed to register netdevice\n");
688 goto err_ptp_destroy;
689 }
690
691 err = otx2_wq_init(vf);
692 if (err)
693 goto err_unreg_netdev;
694
695 otx2vf_set_ethtool_ops(netdev);
696
697 err = otx2vf_mcam_flow_init(vf);
698 if (err)
699 goto err_unreg_netdev;
700
701 err = otx2_init_tc(vf);
702 if (err)
703 goto err_unreg_netdev;
704
705 err = otx2_register_dl(vf);
706 if (err)
707 goto err_shutdown_tc;
708
709 #ifdef CONFIG_DCB
710 err = otx2_dcbnl_set_ops(netdev);
711 if (err)
712 goto err_shutdown_tc;
713 #endif
714 otx2_qos_init(vf, qos_txqs);
715
716 return 0;
717
718 err_shutdown_tc:
719 otx2_shutdown_tc(vf);
720 err_unreg_netdev:
721 unregister_netdev(netdev);
722 err_ptp_destroy:
723 otx2_ptp_destroy(vf);
724 err_detach_rsrc:
725 free_percpu(vf->hw.lmt_info);
726 if (test_bit(CN10K_LMTST, &vf->hw.cap_flag))
727 qmem_free(vf->dev, vf->dync_lmt);
728 otx2_detach_resources(&vf->mbox);
729 err_disable_mbox_intr:
730 otx2vf_disable_mbox_intr(vf);
731 err_mbox_destroy:
732 otx2vf_vfaf_mbox_destroy(vf);
733 err_free_irq_vectors:
734 pci_free_irq_vectors(hw->pdev);
735 err_free_netdev:
736 pci_set_drvdata(pdev, NULL);
737 free_netdev(netdev);
738 err_release_regions:
739 pci_release_regions(pdev);
740 return err;
741 }
742
otx2vf_remove(struct pci_dev * pdev)743 static void otx2vf_remove(struct pci_dev *pdev)
744 {
745 struct net_device *netdev = pci_get_drvdata(pdev);
746 struct otx2_nic *vf;
747
748 if (!netdev)
749 return;
750
751 vf = netdev_priv(netdev);
752
753 /* Disable 802.3x pause frames */
754 if (vf->flags & OTX2_FLAG_RX_PAUSE_ENABLED ||
755 (vf->flags & OTX2_FLAG_TX_PAUSE_ENABLED)) {
756 vf->flags &= ~OTX2_FLAG_RX_PAUSE_ENABLED;
757 vf->flags &= ~OTX2_FLAG_TX_PAUSE_ENABLED;
758 otx2_config_pause_frm(vf);
759 }
760
761 #ifdef CONFIG_DCB
762 /* Disable PFC config */
763 if (vf->pfc_en) {
764 vf->pfc_en = 0;
765 otx2_config_priority_flow_ctrl(vf);
766 }
767 #endif
768
769 cancel_work_sync(&vf->reset_task);
770 otx2_unregister_dl(vf);
771 unregister_netdev(netdev);
772 if (vf->otx2_wq)
773 destroy_workqueue(vf->otx2_wq);
774 otx2_ptp_destroy(vf);
775 otx2_mcam_flow_del(vf);
776 otx2_shutdown_tc(vf);
777 otx2_shutdown_qos(vf);
778 otx2_detach_resources(&vf->mbox);
779 otx2vf_disable_mbox_intr(vf);
780 free_percpu(vf->hw.lmt_info);
781 if (test_bit(CN10K_LMTST, &vf->hw.cap_flag))
782 qmem_free(vf->dev, vf->dync_lmt);
783 otx2vf_vfaf_mbox_destroy(vf);
784 pci_free_irq_vectors(vf->pdev);
785 pci_set_drvdata(pdev, NULL);
786 free_netdev(netdev);
787
788 pci_release_regions(pdev);
789 }
790
791 static struct pci_driver otx2vf_driver = {
792 .name = DRV_NAME,
793 .id_table = otx2_vf_id_table,
794 .probe = otx2vf_probe,
795 .remove = otx2vf_remove,
796 .shutdown = otx2vf_remove,
797 };
798
otx2vf_init_module(void)799 static int __init otx2vf_init_module(void)
800 {
801 pr_info("%s: %s\n", DRV_NAME, DRV_STRING);
802
803 return pci_register_driver(&otx2vf_driver);
804 }
805
otx2vf_cleanup_module(void)806 static void __exit otx2vf_cleanup_module(void)
807 {
808 pci_unregister_driver(&otx2vf_driver);
809 }
810
811 module_init(otx2vf_init_module);
812 module_exit(otx2vf_cleanup_module);
813