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3184fb5b | 1 | // SPDX-License-Identifier: GPL-2.0 |
cb0e3ec4 SG |
2 | /* Marvell RVU Virtual Function ethernet driver |
3 | * | |
4 | * Copyright (C) 2020 Marvell. | |
5 | * | |
6 | */ | |
3184fb5b TD |
7 | |
8 | #include <linux/etherdevice.h> | |
9 | #include <linux/module.h> | |
10 | #include <linux/pci.h> | |
43510ef4 | 11 | #include <linux/net_tstamp.h> |
3184fb5b TD |
12 | |
13 | #include "otx2_common.h" | |
14 | #include "otx2_reg.h" | |
43510ef4 | 15 | #include "otx2_ptp.h" |
4c236d5d | 16 | #include "cn10k.h" |
3184fb5b | 17 | |
facede82 SS |
18 | #define DRV_NAME "rvu_nicvf" |
19 | #define DRV_STRING "Marvell RVU NIC Virtual Function Driver" | |
3184fb5b TD |
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 | ||
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_TXSCH_ALLOC: | |
74 | mbox_handler_nix_txsch_alloc(vf, | |
75 | (struct nix_txsch_alloc_rsp *)msg); | |
76 | break; | |
77 | case MBOX_MSG_NIX_BP_ENABLE: | |
78 | mbox_handler_nix_bp_enable(vf, (struct nix_bp_cfg_rsp *)msg); | |
79 | break; | |
80 | default: | |
81 | if (msg->rc) | |
82 | dev_err(vf->dev, | |
83 | "Mbox msg response has err %d, ID %d\n", | |
84 | msg->rc, msg->id); | |
85 | } | |
86 | } | |
87 | ||
88 | static void otx2vf_vfaf_mbox_handler(struct work_struct *work) | |
89 | { | |
90 | struct otx2_mbox_dev *mdev; | |
91 | struct mbox_hdr *rsp_hdr; | |
92 | struct mbox_msghdr *msg; | |
93 | struct otx2_mbox *mbox; | |
94 | struct mbox *af_mbox; | |
95 | int offset, id; | |
96 | ||
97 | af_mbox = container_of(work, struct mbox, mbox_wrk); | |
98 | mbox = &af_mbox->mbox; | |
99 | mdev = &mbox->dev[0]; | |
100 | rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); | |
101 | if (af_mbox->num_msgs == 0) | |
102 | return; | |
103 | offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN); | |
104 | ||
105 | for (id = 0; id < af_mbox->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; | |
66a5209b HK |
109 | if (mdev->msgs_acked == (af_mbox->num_msgs - 1)) |
110 | __otx2_mbox_reset(mbox, 0); | |
3184fb5b TD |
111 | mdev->msgs_acked++; |
112 | } | |
3184fb5b TD |
113 | } |
114 | ||
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 | ||
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 | ||
159 | vf_mbox = container_of(work, struct mbox, mbox_up_wrk); | |
160 | vf = vf_mbox->pfvf; | |
161 | mbox = &vf_mbox->mbox_up; | |
162 | mdev = &mbox->dev[0]; | |
163 | ||
164 | rsp_hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); | |
165 | if (vf_mbox->up_num_msgs == 0) | |
166 | return; | |
167 | ||
168 | offset = mbox->rx_start + ALIGN(sizeof(*rsp_hdr), MBOX_MSG_ALIGN); | |
169 | ||
170 | for (id = 0; id < vf_mbox->up_num_msgs; id++) { | |
171 | msg = (struct mbox_msghdr *)(mdev->mbase + offset); | |
172 | otx2vf_process_mbox_msg_up(vf, msg); | |
173 | offset = mbox->rx_start + msg->next_msgoff; | |
174 | } | |
175 | ||
176 | otx2_mbox_msg_send(mbox, 0); | |
177 | } | |
178 | ||
179 | static irqreturn_t otx2vf_vfaf_mbox_intr_handler(int irq, void *vf_irq) | |
180 | { | |
181 | struct otx2_nic *vf = (struct otx2_nic *)vf_irq; | |
182 | struct otx2_mbox_dev *mdev; | |
183 | struct otx2_mbox *mbox; | |
184 | struct mbox_hdr *hdr; | |
185 | ||
186 | /* Clear the IRQ */ | |
187 | otx2_write64(vf, RVU_VF_INT, BIT_ULL(0)); | |
188 | ||
189 | /* Read latest mbox data */ | |
190 | smp_rmb(); | |
191 | ||
192 | /* Check for PF => VF response messages */ | |
193 | mbox = &vf->mbox.mbox; | |
194 | mdev = &mbox->dev[0]; | |
195 | otx2_sync_mbox_bbuf(mbox, 0); | |
196 | ||
31a97460 SS |
197 | trace_otx2_msg_interrupt(mbox->pdev, "PF to VF", BIT_ULL(0)); |
198 | ||
3184fb5b TD |
199 | hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); |
200 | if (hdr->num_msgs) { | |
201 | vf->mbox.num_msgs = hdr->num_msgs; | |
202 | hdr->num_msgs = 0; | |
203 | memset(mbox->hwbase + mbox->rx_start, 0, | |
204 | ALIGN(sizeof(struct mbox_hdr), sizeof(u64))); | |
205 | queue_work(vf->mbox_wq, &vf->mbox.mbox_wrk); | |
206 | } | |
207 | /* Check for PF => VF notification messages */ | |
208 | mbox = &vf->mbox.mbox_up; | |
209 | mdev = &mbox->dev[0]; | |
210 | otx2_sync_mbox_bbuf(mbox, 0); | |
211 | ||
212 | hdr = (struct mbox_hdr *)(mdev->mbase + mbox->rx_start); | |
213 | if (hdr->num_msgs) { | |
214 | vf->mbox.up_num_msgs = hdr->num_msgs; | |
215 | hdr->num_msgs = 0; | |
216 | memset(mbox->hwbase + mbox->rx_start, 0, | |
217 | ALIGN(sizeof(struct mbox_hdr), sizeof(u64))); | |
218 | queue_work(vf->mbox_wq, &vf->mbox.mbox_up_wrk); | |
219 | } | |
220 | ||
221 | return IRQ_HANDLED; | |
222 | } | |
223 | ||
224 | static void otx2vf_disable_mbox_intr(struct otx2_nic *vf) | |
225 | { | |
226 | int vector = pci_irq_vector(vf->pdev, RVU_VF_INT_VEC_MBOX); | |
227 | ||
228 | /* Disable VF => PF mailbox IRQ */ | |
229 | otx2_write64(vf, RVU_VF_INT_ENA_W1C, BIT_ULL(0)); | |
230 | free_irq(vector, vf); | |
231 | } | |
232 | ||
233 | static int otx2vf_register_mbox_intr(struct otx2_nic *vf, bool probe_pf) | |
234 | { | |
235 | struct otx2_hw *hw = &vf->hw; | |
236 | struct msg_req *req; | |
237 | char *irq_name; | |
238 | int err; | |
239 | ||
240 | /* Register mailbox interrupt handler */ | |
241 | irq_name = &hw->irq_name[RVU_VF_INT_VEC_MBOX * NAME_SIZE]; | |
242 | snprintf(irq_name, NAME_SIZE, "RVUVFAF Mbox"); | |
243 | err = request_irq(pci_irq_vector(vf->pdev, RVU_VF_INT_VEC_MBOX), | |
244 | otx2vf_vfaf_mbox_intr_handler, 0, irq_name, vf); | |
245 | if (err) { | |
246 | dev_err(vf->dev, | |
247 | "RVUPF: IRQ registration failed for VFAF mbox irq\n"); | |
248 | return err; | |
249 | } | |
250 | ||
251 | /* Enable mailbox interrupt for msgs coming from PF. | |
252 | * First clear to avoid spurious interrupts, if any. | |
253 | */ | |
254 | otx2_write64(vf, RVU_VF_INT, BIT_ULL(0)); | |
255 | otx2_write64(vf, RVU_VF_INT_ENA_W1S, BIT_ULL(0)); | |
256 | ||
257 | if (!probe_pf) | |
258 | return 0; | |
259 | ||
260 | /* Check mailbox communication with PF */ | |
261 | req = otx2_mbox_alloc_msg_ready(&vf->mbox); | |
262 | if (!req) { | |
263 | otx2vf_disable_mbox_intr(vf); | |
264 | return -ENOMEM; | |
265 | } | |
266 | ||
267 | err = otx2_sync_mbox_msg(&vf->mbox); | |
268 | if (err) { | |
269 | dev_warn(vf->dev, | |
270 | "AF not responding to mailbox, deferring probe\n"); | |
271 | otx2vf_disable_mbox_intr(vf); | |
272 | return -EPROBE_DEFER; | |
273 | } | |
274 | return 0; | |
275 | } | |
276 | ||
277 | static void otx2vf_vfaf_mbox_destroy(struct otx2_nic *vf) | |
278 | { | |
279 | struct mbox *mbox = &vf->mbox; | |
280 | ||
281 | if (vf->mbox_wq) { | |
3184fb5b TD |
282 | destroy_workqueue(vf->mbox_wq); |
283 | vf->mbox_wq = NULL; | |
284 | } | |
285 | ||
facede82 | 286 | if (mbox->mbox.hwbase && !test_bit(CN10K_MBOX, &vf->hw.cap_flag)) |
3184fb5b TD |
287 | iounmap((void __iomem *)mbox->mbox.hwbase); |
288 | ||
289 | otx2_mbox_destroy(&mbox->mbox); | |
290 | otx2_mbox_destroy(&mbox->mbox_up); | |
291 | } | |
292 | ||
293 | static int otx2vf_vfaf_mbox_init(struct otx2_nic *vf) | |
294 | { | |
295 | struct mbox *mbox = &vf->mbox; | |
296 | void __iomem *hwbase; | |
297 | int err; | |
298 | ||
299 | mbox->pfvf = vf; | |
300 | vf->mbox_wq = alloc_workqueue("otx2_vfaf_mailbox", | |
301 | WQ_UNBOUND | WQ_HIGHPRI | | |
302 | WQ_MEM_RECLAIM, 1); | |
303 | if (!vf->mbox_wq) | |
304 | return -ENOMEM; | |
305 | ||
facede82 SS |
306 | if (test_bit(CN10K_MBOX, &vf->hw.cap_flag)) { |
307 | /* For cn10k platform, VF mailbox region is in its BAR2 | |
308 | * register space | |
309 | */ | |
310 | hwbase = vf->reg_base + RVU_VF_MBOX_REGION; | |
311 | } else { | |
312 | /* Mailbox is a reserved memory (in RAM) region shared between | |
313 | * admin function (i.e PF0) and this VF, shouldn't be mapped as | |
314 | * device memory to allow unaligned accesses. | |
315 | */ | |
316 | hwbase = ioremap_wc(pci_resource_start(vf->pdev, | |
317 | PCI_MBOX_BAR_NUM), | |
318 | pci_resource_len(vf->pdev, | |
319 | PCI_MBOX_BAR_NUM)); | |
320 | if (!hwbase) { | |
321 | dev_err(vf->dev, "Unable to map VFAF mailbox region\n"); | |
322 | err = -ENOMEM; | |
323 | goto exit; | |
324 | } | |
3184fb5b TD |
325 | } |
326 | ||
327 | err = otx2_mbox_init(&mbox->mbox, hwbase, vf->pdev, vf->reg_base, | |
328 | MBOX_DIR_VFPF, 1); | |
329 | if (err) | |
330 | goto exit; | |
331 | ||
332 | err = otx2_mbox_init(&mbox->mbox_up, hwbase, vf->pdev, vf->reg_base, | |
333 | MBOX_DIR_VFPF_UP, 1); | |
334 | if (err) | |
335 | goto exit; | |
336 | ||
337 | err = otx2_mbox_bbuf_init(mbox, vf->pdev); | |
338 | if (err) | |
339 | goto exit; | |
340 | ||
341 | INIT_WORK(&mbox->mbox_wrk, otx2vf_vfaf_mbox_handler); | |
342 | INIT_WORK(&mbox->mbox_up_wrk, otx2vf_vfaf_mbox_up_handler); | |
4c3212f5 | 343 | mutex_init(&mbox->lock); |
3184fb5b TD |
344 | |
345 | return 0; | |
346 | exit: | |
facede82 SS |
347 | if (hwbase && !test_bit(CN10K_MBOX, &vf->hw.cap_flag)) |
348 | iounmap(hwbase); | |
3184fb5b TD |
349 | destroy_workqueue(vf->mbox_wq); |
350 | return err; | |
351 | } | |
352 | ||
353 | static int otx2vf_open(struct net_device *netdev) | |
354 | { | |
355 | struct otx2_nic *vf; | |
356 | int err; | |
357 | ||
358 | err = otx2_open(netdev); | |
359 | if (err) | |
360 | return err; | |
361 | ||
362 | /* LBKs do not receive link events so tell everyone we are up here */ | |
363 | vf = netdev_priv(netdev); | |
364 | if (is_otx2_lbkvf(vf->pdev)) { | |
365 | pr_info("%s NIC Link is UP\n", netdev->name); | |
366 | netif_carrier_on(netdev); | |
367 | netif_tx_start_all_queues(netdev); | |
368 | } | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | static int otx2vf_stop(struct net_device *netdev) | |
374 | { | |
375 | return otx2_stop(netdev); | |
376 | } | |
377 | ||
378 | static netdev_tx_t otx2vf_xmit(struct sk_buff *skb, struct net_device *netdev) | |
379 | { | |
380 | struct otx2_nic *vf = netdev_priv(netdev); | |
381 | int qidx = skb_get_queue_mapping(skb); | |
382 | struct otx2_snd_queue *sq; | |
383 | struct netdev_queue *txq; | |
384 | ||
385 | sq = &vf->qset.sq[qidx]; | |
386 | txq = netdev_get_tx_queue(netdev, qidx); | |
387 | ||
388 | if (!otx2_sq_append_skb(netdev, sq, skb, qidx)) { | |
389 | netif_tx_stop_queue(txq); | |
390 | ||
391 | /* Check again, incase SQBs got freed up */ | |
392 | smp_mb(); | |
393 | if (((sq->num_sqbs - *sq->aura_fc_addr) * sq->sqe_per_sqb) | |
394 | > sq->sqe_thresh) | |
395 | netif_tx_wake_queue(txq); | |
396 | ||
397 | return NETDEV_TX_BUSY; | |
398 | } | |
399 | ||
400 | return NETDEV_TX_OK; | |
401 | } | |
402 | ||
cbc100aa NM |
403 | static void otx2vf_set_rx_mode(struct net_device *netdev) |
404 | { | |
405 | struct otx2_nic *vf = netdev_priv(netdev); | |
406 | ||
407 | queue_work(vf->otx2_wq, &vf->rx_mode_work); | |
408 | } | |
409 | ||
410 | static void otx2vf_do_set_rx_mode(struct work_struct *work) | |
411 | { | |
412 | struct otx2_nic *vf = container_of(work, struct otx2_nic, rx_mode_work); | |
413 | struct net_device *netdev = vf->netdev; | |
414 | unsigned int flags = netdev->flags; | |
415 | struct nix_rx_mode *req; | |
416 | ||
417 | mutex_lock(&vf->mbox.lock); | |
418 | ||
419 | req = otx2_mbox_alloc_msg_nix_set_rx_mode(&vf->mbox); | |
420 | if (!req) { | |
421 | mutex_unlock(&vf->mbox.lock); | |
422 | return; | |
423 | } | |
424 | ||
425 | req->mode = NIX_RX_MODE_UCAST; | |
426 | ||
427 | if (flags & IFF_PROMISC) | |
428 | req->mode |= NIX_RX_MODE_PROMISC; | |
429 | if (flags & (IFF_ALLMULTI | IFF_MULTICAST)) | |
430 | req->mode |= NIX_RX_MODE_ALLMULTI; | |
431 | ||
432 | req->mode |= NIX_RX_MODE_USE_MCE; | |
433 | ||
434 | otx2_sync_mbox_msg(&vf->mbox); | |
435 | ||
436 | mutex_unlock(&vf->mbox.lock); | |
437 | } | |
438 | ||
3184fb5b TD |
439 | static int otx2vf_change_mtu(struct net_device *netdev, int new_mtu) |
440 | { | |
441 | bool if_up = netif_running(netdev); | |
442 | int err = 0; | |
443 | ||
444 | if (if_up) | |
445 | otx2vf_stop(netdev); | |
446 | ||
447 | netdev_info(netdev, "Changing MTU from %d to %d\n", | |
448 | netdev->mtu, new_mtu); | |
449 | netdev->mtu = new_mtu; | |
450 | ||
451 | if (if_up) | |
452 | err = otx2vf_open(netdev); | |
453 | ||
454 | return err; | |
455 | } | |
456 | ||
457 | static void otx2vf_reset_task(struct work_struct *work) | |
458 | { | |
459 | struct otx2_nic *vf = container_of(work, struct otx2_nic, reset_task); | |
460 | ||
461 | rtnl_lock(); | |
462 | ||
463 | if (netif_running(vf->netdev)) { | |
464 | otx2vf_stop(vf->netdev); | |
465 | vf->reset_count++; | |
466 | otx2vf_open(vf->netdev); | |
467 | } | |
468 | ||
469 | rtnl_unlock(); | |
470 | } | |
471 | ||
3cffaed2 RB |
472 | static int otx2vf_set_features(struct net_device *netdev, |
473 | netdev_features_t features) | |
474 | { | |
4b0385bc | 475 | return otx2_handle_ntuple_tc_features(netdev, features); |
3cffaed2 RB |
476 | } |
477 | ||
3184fb5b TD |
478 | static const struct net_device_ops otx2vf_netdev_ops = { |
479 | .ndo_open = otx2vf_open, | |
480 | .ndo_stop = otx2vf_stop, | |
481 | .ndo_start_xmit = otx2vf_xmit, | |
cbc100aa | 482 | .ndo_set_rx_mode = otx2vf_set_rx_mode, |
3184fb5b TD |
483 | .ndo_set_mac_address = otx2_set_mac_address, |
484 | .ndo_change_mtu = otx2vf_change_mtu, | |
3cffaed2 | 485 | .ndo_set_features = otx2vf_set_features, |
3184fb5b TD |
486 | .ndo_get_stats64 = otx2_get_stats64, |
487 | .ndo_tx_timeout = otx2_tx_timeout, | |
a6785bd7 | 488 | .ndo_eth_ioctl = otx2_ioctl, |
4b0385bc | 489 | .ndo_setup_tc = otx2_setup_tc, |
3184fb5b TD |
490 | }; |
491 | ||
cbc100aa NM |
492 | static int otx2_wq_init(struct otx2_nic *vf) |
493 | { | |
494 | vf->otx2_wq = create_singlethread_workqueue("otx2vf_wq"); | |
495 | if (!vf->otx2_wq) | |
496 | return -ENOMEM; | |
497 | ||
498 | INIT_WORK(&vf->rx_mode_work, otx2vf_do_set_rx_mode); | |
499 | INIT_WORK(&vf->reset_task, otx2vf_reset_task); | |
500 | return 0; | |
501 | } | |
502 | ||
3184fb5b TD |
503 | static int otx2vf_realloc_msix_vectors(struct otx2_nic *vf) |
504 | { | |
505 | struct otx2_hw *hw = &vf->hw; | |
506 | int num_vec, err; | |
507 | ||
508 | num_vec = hw->nix_msixoff; | |
509 | num_vec += NIX_LF_CINT_VEC_START + hw->max_queues; | |
510 | ||
511 | otx2vf_disable_mbox_intr(vf); | |
512 | pci_free_irq_vectors(hw->pdev); | |
513 | err = pci_alloc_irq_vectors(hw->pdev, num_vec, num_vec, PCI_IRQ_MSIX); | |
514 | if (err < 0) { | |
515 | dev_err(vf->dev, "%s: Failed to realloc %d IRQ vectors\n", | |
516 | __func__, num_vec); | |
517 | return err; | |
518 | } | |
519 | ||
520 | return otx2vf_register_mbox_intr(vf, false); | |
521 | } | |
522 | ||
523 | static int otx2vf_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
524 | { | |
525 | int num_vec = pci_msix_vec_count(pdev); | |
526 | struct device *dev = &pdev->dev; | |
527 | struct net_device *netdev; | |
528 | struct otx2_nic *vf; | |
529 | struct otx2_hw *hw; | |
530 | int err, qcount; | |
531 | ||
532 | err = pcim_enable_device(pdev); | |
533 | if (err) { | |
534 | dev_err(dev, "Failed to enable PCI device\n"); | |
535 | return err; | |
536 | } | |
537 | ||
538 | err = pci_request_regions(pdev, DRV_NAME); | |
539 | if (err) { | |
540 | dev_err(dev, "PCI request regions failed 0x%x\n", err); | |
541 | return err; | |
542 | } | |
543 | ||
544 | err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(48)); | |
545 | if (err) { | |
546 | dev_err(dev, "DMA mask config failed, abort\n"); | |
547 | goto err_release_regions; | |
548 | } | |
549 | ||
550 | pci_set_master(pdev); | |
551 | ||
552 | qcount = num_online_cpus(); | |
553 | netdev = alloc_etherdev_mqs(sizeof(*vf), qcount, qcount); | |
554 | if (!netdev) { | |
555 | err = -ENOMEM; | |
556 | goto err_release_regions; | |
557 | } | |
558 | ||
559 | pci_set_drvdata(pdev, netdev); | |
560 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
561 | vf = netdev_priv(netdev); | |
562 | vf->netdev = netdev; | |
563 | vf->pdev = pdev; | |
564 | vf->dev = dev; | |
565 | vf->iommu_domain = iommu_get_domain_for_dev(dev); | |
566 | ||
567 | vf->flags |= OTX2_FLAG_INTF_DOWN; | |
568 | hw = &vf->hw; | |
569 | hw->pdev = vf->pdev; | |
570 | hw->rx_queues = qcount; | |
571 | hw->tx_queues = qcount; | |
572 | hw->max_queues = qcount; | |
06059a1a | 573 | hw->tot_tx_queues = qcount; |
a989eb66 | 574 | hw->rbuf_len = OTX2_DEFAULT_RBUF_LEN; |
68258596 SS |
575 | /* Use CQE of 128 byte descriptor size by default */ |
576 | hw->xqe_size = 128; | |
3184fb5b TD |
577 | |
578 | hw->irq_name = devm_kmalloc_array(&hw->pdev->dev, num_vec, NAME_SIZE, | |
579 | GFP_KERNEL); | |
9302bead WY |
580 | if (!hw->irq_name) { |
581 | err = -ENOMEM; | |
3184fb5b | 582 | goto err_free_netdev; |
9302bead | 583 | } |
3184fb5b TD |
584 | |
585 | hw->affinity_mask = devm_kcalloc(&hw->pdev->dev, num_vec, | |
586 | sizeof(cpumask_var_t), GFP_KERNEL); | |
9302bead WY |
587 | if (!hw->affinity_mask) { |
588 | err = -ENOMEM; | |
3184fb5b | 589 | goto err_free_netdev; |
9302bead | 590 | } |
3184fb5b TD |
591 | |
592 | err = pci_alloc_irq_vectors(hw->pdev, num_vec, num_vec, PCI_IRQ_MSIX); | |
593 | if (err < 0) { | |
594 | dev_err(dev, "%s: Failed to alloc %d IRQ vectors\n", | |
595 | __func__, num_vec); | |
596 | goto err_free_netdev; | |
597 | } | |
598 | ||
599 | vf->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0); | |
600 | if (!vf->reg_base) { | |
601 | dev_err(dev, "Unable to map physical function CSRs, aborting\n"); | |
602 | err = -ENOMEM; | |
603 | goto err_free_irq_vectors; | |
604 | } | |
605 | ||
6e8ad438 | 606 | otx2_setup_dev_hw_settings(vf); |
3184fb5b TD |
607 | /* Init VF <=> PF mailbox stuff */ |
608 | err = otx2vf_vfaf_mbox_init(vf); | |
609 | if (err) | |
610 | goto err_free_irq_vectors; | |
611 | ||
612 | /* Register mailbox interrupt */ | |
613 | err = otx2vf_register_mbox_intr(vf, true); | |
614 | if (err) | |
615 | goto err_mbox_destroy; | |
616 | ||
617 | /* Request AF to attach NPA and LIX LFs to this AF */ | |
618 | err = otx2_attach_npa_nix(vf); | |
619 | if (err) | |
620 | goto err_disable_mbox_intr; | |
621 | ||
622 | err = otx2vf_realloc_msix_vectors(vf); | |
623 | if (err) | |
624 | goto err_mbox_destroy; | |
625 | ||
626 | err = otx2_set_real_num_queues(netdev, qcount, qcount); | |
627 | if (err) | |
628 | goto err_detach_rsrc; | |
629 | ||
5c051207 | 630 | err = cn10k_lmtst_init(vf); |
6e8ad438 G |
631 | if (err) |
632 | goto err_detach_rsrc; | |
3184fb5b | 633 | |
43510ef4 NM |
634 | /* Don't check for error. Proceed without ptp */ |
635 | otx2_ptp_init(vf); | |
636 | ||
3184fb5b TD |
637 | /* Assign default mac address */ |
638 | otx2_get_mac_from_af(netdev); | |
639 | ||
640 | netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM | | |
641 | NETIF_F_IPV6_CSUM | NETIF_F_RXHASH | | |
dc1a9bf2 SG |
642 | NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | |
643 | NETIF_F_GSO_UDP_L4; | |
3184fb5b | 644 | netdev->features = netdev->hw_features; |
fd9d7859 HK |
645 | /* Support TSO on tag interface */ |
646 | netdev->vlan_features |= netdev->features; | |
647 | netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX | | |
648 | NETIF_F_HW_VLAN_STAG_TX; | |
649 | netdev->features |= netdev->hw_features; | |
3184fb5b | 650 | |
3cffaed2 | 651 | netdev->hw_features |= NETIF_F_NTUPLE; |
0b3834ae | 652 | netdev->hw_features |= NETIF_F_RXALL; |
4b0385bc | 653 | netdev->hw_features |= NETIF_F_HW_TC; |
0b3834ae | 654 | |
ee8b7a11 | 655 | netif_set_tso_max_segs(netdev, OTX2_MAX_GSO_SEGS); |
3184fb5b TD |
656 | netdev->watchdog_timeo = OTX2_TX_TIMEOUT; |
657 | ||
658 | netdev->netdev_ops = &otx2vf_netdev_ops; | |
659 | ||
3184fb5b | 660 | netdev->min_mtu = OTX2_MIN_MTU; |
ab58a416 | 661 | netdev->max_mtu = otx2_get_max_mtu(vf); |
3184fb5b | 662 | |
3184fb5b TD |
663 | /* To distinguish, for LBK VFs set netdev name explicitly */ |
664 | if (is_otx2_lbkvf(vf->pdev)) { | |
665 | int n; | |
666 | ||
667 | n = (vf->pcifunc >> RVU_PFVF_FUNC_SHIFT) & RVU_PFVF_FUNC_MASK; | |
668 | /* Need to subtract 1 to get proper VF number */ | |
669 | n -= 1; | |
670 | snprintf(netdev->name, sizeof(netdev->name), "lbk%d", n); | |
671 | } | |
672 | ||
673 | err = register_netdev(netdev); | |
674 | if (err) { | |
675 | dev_err(dev, "Failed to register netdevice\n"); | |
eabd0f88 | 676 | goto err_ptp_destroy; |
3184fb5b TD |
677 | } |
678 | ||
cbc100aa NM |
679 | err = otx2_wq_init(vf); |
680 | if (err) | |
681 | goto err_unreg_netdev; | |
682 | ||
05c22b54 TD |
683 | otx2vf_set_ethtool_ops(netdev); |
684 | ||
3cffaed2 RB |
685 | err = otx2vf_mcam_flow_init(vf); |
686 | if (err) | |
687 | goto err_unreg_netdev; | |
688 | ||
4b0385bc | 689 | err = otx2_init_tc(vf); |
2da48943 SG |
690 | if (err) |
691 | goto err_unreg_netdev; | |
692 | ||
4b0385bc SS |
693 | err = otx2_register_dl(vf); |
694 | if (err) | |
695 | goto err_shutdown_tc; | |
696 | ||
8e675581 HK |
697 | #ifdef CONFIG_DCB |
698 | err = otx2_dcbnl_set_ops(netdev); | |
699 | if (err) | |
4b0385bc | 700 | goto err_shutdown_tc; |
8e675581 HK |
701 | #endif |
702 | ||
3184fb5b TD |
703 | return 0; |
704 | ||
4b0385bc SS |
705 | err_shutdown_tc: |
706 | otx2_shutdown_tc(vf); | |
cbc100aa NM |
707 | err_unreg_netdev: |
708 | unregister_netdev(netdev); | |
eabd0f88 RBS |
709 | err_ptp_destroy: |
710 | otx2_ptp_destroy(vf); | |
3184fb5b | 711 | err_detach_rsrc: |
f038f391 | 712 | free_percpu(vf->hw.lmt_info); |
5c051207 G |
713 | if (test_bit(CN10K_LMTST, &vf->hw.cap_flag)) |
714 | qmem_free(vf->dev, vf->dync_lmt); | |
3184fb5b TD |
715 | otx2_detach_resources(&vf->mbox); |
716 | err_disable_mbox_intr: | |
717 | otx2vf_disable_mbox_intr(vf); | |
718 | err_mbox_destroy: | |
719 | otx2vf_vfaf_mbox_destroy(vf); | |
720 | err_free_irq_vectors: | |
721 | pci_free_irq_vectors(hw->pdev); | |
722 | err_free_netdev: | |
723 | pci_set_drvdata(pdev, NULL); | |
724 | free_netdev(netdev); | |
725 | err_release_regions: | |
726 | pci_release_regions(pdev); | |
727 | return err; | |
728 | } | |
729 | ||
730 | static void otx2vf_remove(struct pci_dev *pdev) | |
731 | { | |
732 | struct net_device *netdev = pci_get_drvdata(pdev); | |
733 | struct otx2_nic *vf; | |
734 | ||
735 | if (!netdev) | |
736 | return; | |
737 | ||
738 | vf = netdev_priv(netdev); | |
739 | ||
d957b51f HK |
740 | /* Disable 802.3x pause frames */ |
741 | if (vf->flags & OTX2_FLAG_RX_PAUSE_ENABLED || | |
742 | (vf->flags & OTX2_FLAG_TX_PAUSE_ENABLED)) { | |
743 | vf->flags &= ~OTX2_FLAG_RX_PAUSE_ENABLED; | |
744 | vf->flags &= ~OTX2_FLAG_TX_PAUSE_ENABLED; | |
745 | otx2_config_pause_frm(vf); | |
746 | } | |
747 | ||
8e675581 HK |
748 | #ifdef CONFIG_DCB |
749 | /* Disable PFC config */ | |
750 | if (vf->pfc_en) { | |
751 | vf->pfc_en = 0; | |
752 | otx2_config_priority_flow_ctrl(vf); | |
753 | } | |
754 | #endif | |
755 | ||
c0376f47 | 756 | cancel_work_sync(&vf->reset_task); |
2da48943 | 757 | otx2_unregister_dl(vf); |
ed543f5c | 758 | unregister_netdev(netdev); |
cbc100aa NM |
759 | if (vf->otx2_wq) |
760 | destroy_workqueue(vf->otx2_wq); | |
eabd0f88 | 761 | otx2_ptp_destroy(vf); |
53da7aec HK |
762 | otx2_mcam_flow_del(vf); |
763 | otx2_shutdown_tc(vf); | |
3184fb5b | 764 | otx2vf_disable_mbox_intr(vf); |
3184fb5b | 765 | otx2_detach_resources(&vf->mbox); |
f038f391 | 766 | free_percpu(vf->hw.lmt_info); |
5c051207 G |
767 | if (test_bit(CN10K_LMTST, &vf->hw.cap_flag)) |
768 | qmem_free(vf->dev, vf->dync_lmt); | |
3184fb5b TD |
769 | otx2vf_vfaf_mbox_destroy(vf); |
770 | pci_free_irq_vectors(vf->pdev); | |
771 | pci_set_drvdata(pdev, NULL); | |
772 | free_netdev(netdev); | |
773 | ||
774 | pci_release_regions(pdev); | |
775 | } | |
776 | ||
777 | static struct pci_driver otx2vf_driver = { | |
778 | .name = DRV_NAME, | |
779 | .id_table = otx2_vf_id_table, | |
780 | .probe = otx2vf_probe, | |
781 | .remove = otx2vf_remove, | |
782 | .shutdown = otx2vf_remove, | |
783 | }; | |
784 | ||
785 | static int __init otx2vf_init_module(void) | |
786 | { | |
787 | pr_info("%s: %s\n", DRV_NAME, DRV_STRING); | |
788 | ||
789 | return pci_register_driver(&otx2vf_driver); | |
790 | } | |
791 | ||
792 | static void __exit otx2vf_cleanup_module(void) | |
793 | { | |
794 | pci_unregister_driver(&otx2vf_driver); | |
795 | } | |
796 | ||
797 | module_init(otx2vf_init_module); | |
798 | module_exit(otx2vf_cleanup_module); |