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[mirror_ubuntu-hirsute-kernel.git] / drivers / net / ethernet / sfc / ef10_sriov.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /****************************************************************************
3 * Driver for Solarflare network controllers and boards
4 * Copyright 2015 Solarflare Communications Inc.
5 */
6 #include <linux/etherdevice.h>
7 #include <linux/pci.h>
8 #include <linux/module.h>
9 #include "net_driver.h"
10 #include "ef10_sriov.h"
11 #include "efx.h"
12 #include "nic.h"
13 #include "mcdi_pcol.h"
14
15 static int efx_ef10_evb_port_assign(struct efx_nic *efx, unsigned int port_id,
16 unsigned int vf_fn)
17 {
18 MCDI_DECLARE_BUF(inbuf, MC_CMD_EVB_PORT_ASSIGN_IN_LEN);
19 struct efx_ef10_nic_data *nic_data = efx->nic_data;
20
21 MCDI_SET_DWORD(inbuf, EVB_PORT_ASSIGN_IN_PORT_ID, port_id);
22 MCDI_POPULATE_DWORD_2(inbuf, EVB_PORT_ASSIGN_IN_FUNCTION,
23 EVB_PORT_ASSIGN_IN_PF, nic_data->pf_index,
24 EVB_PORT_ASSIGN_IN_VF, vf_fn);
25
26 return efx_mcdi_rpc(efx, MC_CMD_EVB_PORT_ASSIGN, inbuf, sizeof(inbuf),
27 NULL, 0, NULL);
28 }
29
30 static int efx_ef10_vswitch_alloc(struct efx_nic *efx, unsigned int port_id,
31 unsigned int vswitch_type)
32 {
33 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_ALLOC_IN_LEN);
34 int rc;
35
36 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_UPSTREAM_PORT_ID, port_id);
37 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_TYPE, vswitch_type);
38 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 2);
39 MCDI_POPULATE_DWORD_1(inbuf, VSWITCH_ALLOC_IN_FLAGS,
40 VSWITCH_ALLOC_IN_FLAG_AUTO_PORT, 0);
41
42 /* Quietly try to allocate 2 VLAN tags */
43 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VSWITCH_ALLOC, inbuf, sizeof(inbuf),
44 NULL, 0, NULL);
45
46 /* If 2 VLAN tags is too many, revert to trying with 1 VLAN tags */
47 if (rc == -EPROTO) {
48 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 1);
49 rc = efx_mcdi_rpc(efx, MC_CMD_VSWITCH_ALLOC, inbuf,
50 sizeof(inbuf), NULL, 0, NULL);
51 } else if (rc) {
52 efx_mcdi_display_error(efx, MC_CMD_VSWITCH_ALLOC,
53 MC_CMD_VSWITCH_ALLOC_IN_LEN,
54 NULL, 0, rc);
55 }
56 return rc;
57 }
58
59 static int efx_ef10_vswitch_free(struct efx_nic *efx, unsigned int port_id)
60 {
61 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_FREE_IN_LEN);
62
63 MCDI_SET_DWORD(inbuf, VSWITCH_FREE_IN_UPSTREAM_PORT_ID, port_id);
64
65 return efx_mcdi_rpc(efx, MC_CMD_VSWITCH_FREE, inbuf, sizeof(inbuf),
66 NULL, 0, NULL);
67 }
68
69 static int efx_ef10_vport_alloc(struct efx_nic *efx,
70 unsigned int port_id_in,
71 unsigned int vport_type,
72 u16 vlan,
73 unsigned int *port_id_out)
74 {
75 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_ALLOC_IN_LEN);
76 MCDI_DECLARE_BUF(outbuf, MC_CMD_VPORT_ALLOC_OUT_LEN);
77 size_t outlen;
78 int rc;
79
80 EFX_WARN_ON_PARANOID(!port_id_out);
81
82 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_UPSTREAM_PORT_ID, port_id_in);
83 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_TYPE, vport_type);
84 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_NUM_VLAN_TAGS,
85 (vlan != EFX_EF10_NO_VLAN));
86 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_FLAGS,
87 VPORT_ALLOC_IN_FLAG_AUTO_PORT, 0);
88 if (vlan != EFX_EF10_NO_VLAN)
89 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_VLAN_TAGS,
90 VPORT_ALLOC_IN_VLAN_TAG_0, vlan);
91
92 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_ALLOC, inbuf, sizeof(inbuf),
93 outbuf, sizeof(outbuf), &outlen);
94 if (rc)
95 return rc;
96 if (outlen < MC_CMD_VPORT_ALLOC_OUT_LEN)
97 return -EIO;
98
99 *port_id_out = MCDI_DWORD(outbuf, VPORT_ALLOC_OUT_VPORT_ID);
100 return 0;
101 }
102
103 static int efx_ef10_vport_free(struct efx_nic *efx, unsigned int port_id)
104 {
105 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_FREE_IN_LEN);
106
107 MCDI_SET_DWORD(inbuf, VPORT_FREE_IN_VPORT_ID, port_id);
108
109 return efx_mcdi_rpc(efx, MC_CMD_VPORT_FREE, inbuf, sizeof(inbuf),
110 NULL, 0, NULL);
111 }
112
113 static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx)
114 {
115 struct efx_ef10_nic_data *nic_data = efx->nic_data;
116 int i;
117
118 if (!nic_data->vf)
119 return;
120
121 for (i = 0; i < efx->vf_count; i++) {
122 struct ef10_vf *vf = nic_data->vf + i;
123
124 /* If VF is assigned, do not free the vport */
125 if (vf->pci_dev &&
126 vf->pci_dev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
127 continue;
128
129 if (vf->vport_assigned) {
130 efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, i);
131 vf->vport_assigned = 0;
132 }
133
134 if (!is_zero_ether_addr(vf->mac)) {
135 efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
136 eth_zero_addr(vf->mac);
137 }
138
139 if (vf->vport_id) {
140 efx_ef10_vport_free(efx, vf->vport_id);
141 vf->vport_id = 0;
142 }
143
144 vf->efx = NULL;
145 }
146 }
147
148 static void efx_ef10_sriov_free_vf_vswitching(struct efx_nic *efx)
149 {
150 struct efx_ef10_nic_data *nic_data = efx->nic_data;
151
152 efx_ef10_sriov_free_vf_vports(efx);
153 kfree(nic_data->vf);
154 nic_data->vf = NULL;
155 }
156
157 static int efx_ef10_sriov_assign_vf_vport(struct efx_nic *efx,
158 unsigned int vf_i)
159 {
160 struct efx_ef10_nic_data *nic_data = efx->nic_data;
161 struct ef10_vf *vf = nic_data->vf + vf_i;
162 int rc;
163
164 if (WARN_ON_ONCE(!nic_data->vf))
165 return -EOPNOTSUPP;
166
167 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
168 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
169 vf->vlan, &vf->vport_id);
170 if (rc)
171 return rc;
172
173 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
174 if (rc) {
175 eth_zero_addr(vf->mac);
176 return rc;
177 }
178
179 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
180 if (rc)
181 return rc;
182
183 vf->vport_assigned = 1;
184 return 0;
185 }
186
187 static int efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic *efx)
188 {
189 struct efx_ef10_nic_data *nic_data = efx->nic_data;
190 unsigned int i;
191 int rc;
192
193 nic_data->vf = kcalloc(efx->vf_count, sizeof(struct ef10_vf),
194 GFP_KERNEL);
195 if (!nic_data->vf)
196 return -ENOMEM;
197
198 for (i = 0; i < efx->vf_count; i++) {
199 eth_random_addr(nic_data->vf[i].mac);
200 nic_data->vf[i].efx = NULL;
201 nic_data->vf[i].vlan = EFX_EF10_NO_VLAN;
202
203 rc = efx_ef10_sriov_assign_vf_vport(efx, i);
204 if (rc)
205 goto fail;
206 }
207
208 return 0;
209 fail:
210 efx_ef10_sriov_free_vf_vports(efx);
211 kfree(nic_data->vf);
212 nic_data->vf = NULL;
213 return rc;
214 }
215
216 static int efx_ef10_sriov_restore_vf_vswitching(struct efx_nic *efx)
217 {
218 unsigned int i;
219 int rc;
220
221 for (i = 0; i < efx->vf_count; i++) {
222 rc = efx_ef10_sriov_assign_vf_vport(efx, i);
223 if (rc)
224 goto fail;
225 }
226
227 return 0;
228 fail:
229 efx_ef10_sriov_free_vf_vswitching(efx);
230 return rc;
231 }
232
233 static int efx_ef10_vadaptor_alloc_set_features(struct efx_nic *efx)
234 {
235 struct efx_ef10_nic_data *nic_data = efx->nic_data;
236 u32 port_flags;
237 int rc;
238
239 rc = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
240 if (rc)
241 goto fail_vadaptor_alloc;
242
243 rc = efx_ef10_vadaptor_query(efx, nic_data->vport_id,
244 &port_flags, NULL, NULL);
245 if (rc)
246 goto fail_vadaptor_query;
247
248 if (port_flags &
249 (1 << MC_CMD_VPORT_ALLOC_IN_FLAG_VLAN_RESTRICT_LBN))
250 efx->fixed_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
251 else
252 efx->fixed_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
253
254 return 0;
255
256 fail_vadaptor_query:
257 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
258 fail_vadaptor_alloc:
259 return rc;
260 }
261
262 /* On top of the default firmware vswitch setup, create a VEB vswitch and
263 * expansion vport for use by this function.
264 */
265 int efx_ef10_vswitching_probe_pf(struct efx_nic *efx)
266 {
267 struct efx_ef10_nic_data *nic_data = efx->nic_data;
268 struct net_device *net_dev = efx->net_dev;
269 int rc;
270
271 if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) {
272 /* vswitch not needed as we have no VFs */
273 efx_ef10_vadaptor_alloc_set_features(efx);
274 return 0;
275 }
276
277 rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED,
278 MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB);
279 if (rc)
280 goto fail1;
281
282 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
283 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
284 EFX_EF10_NO_VLAN, &nic_data->vport_id);
285 if (rc)
286 goto fail2;
287
288 rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id, net_dev->dev_addr);
289 if (rc)
290 goto fail3;
291 ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr);
292
293 rc = efx_ef10_vadaptor_alloc_set_features(efx);
294 if (rc)
295 goto fail4;
296
297 return 0;
298 fail4:
299 efx_ef10_vport_del_mac(efx, nic_data->vport_id, nic_data->vport_mac);
300 eth_zero_addr(nic_data->vport_mac);
301 fail3:
302 efx_ef10_vport_free(efx, nic_data->vport_id);
303 nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
304 fail2:
305 efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED);
306 fail1:
307 return rc;
308 }
309
310 int efx_ef10_vswitching_probe_vf(struct efx_nic *efx)
311 {
312 return efx_ef10_vadaptor_alloc_set_features(efx);
313 }
314
315 int efx_ef10_vswitching_restore_pf(struct efx_nic *efx)
316 {
317 struct efx_ef10_nic_data *nic_data = efx->nic_data;
318 int rc;
319
320 if (!nic_data->must_probe_vswitching)
321 return 0;
322
323 rc = efx_ef10_vswitching_probe_pf(efx);
324 if (rc)
325 goto fail;
326
327 rc = efx_ef10_sriov_restore_vf_vswitching(efx);
328 if (rc)
329 goto fail;
330
331 nic_data->must_probe_vswitching = false;
332 fail:
333 return rc;
334 }
335
336 int efx_ef10_vswitching_restore_vf(struct efx_nic *efx)
337 {
338 struct efx_ef10_nic_data *nic_data = efx->nic_data;
339 int rc;
340
341 if (!nic_data->must_probe_vswitching)
342 return 0;
343
344 rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
345 if (rc)
346 return rc;
347
348 nic_data->must_probe_vswitching = false;
349 return 0;
350 }
351
352 void efx_ef10_vswitching_remove_pf(struct efx_nic *efx)
353 {
354 struct efx_ef10_nic_data *nic_data = efx->nic_data;
355
356 efx_ef10_sriov_free_vf_vswitching(efx);
357
358 efx_ef10_vadaptor_free(efx, nic_data->vport_id);
359
360 if (nic_data->vport_id == EVB_PORT_ID_ASSIGNED)
361 return; /* No vswitch was ever created */
362
363 if (!is_zero_ether_addr(nic_data->vport_mac)) {
364 efx_ef10_vport_del_mac(efx, nic_data->vport_id,
365 efx->net_dev->dev_addr);
366 eth_zero_addr(nic_data->vport_mac);
367 }
368 efx_ef10_vport_free(efx, nic_data->vport_id);
369 nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
370
371 /* Only free the vswitch if no VFs are assigned */
372 if (!pci_vfs_assigned(efx->pci_dev))
373 efx_ef10_vswitch_free(efx, nic_data->vport_id);
374 }
375
376 void efx_ef10_vswitching_remove_vf(struct efx_nic *efx)
377 {
378 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
379 }
380
381 static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs)
382 {
383 int rc = 0;
384 struct pci_dev *dev = efx->pci_dev;
385
386 efx->vf_count = num_vfs;
387
388 rc = efx_ef10_sriov_alloc_vf_vswitching(efx);
389 if (rc)
390 goto fail1;
391
392 rc = pci_enable_sriov(dev, num_vfs);
393 if (rc)
394 goto fail2;
395
396 return 0;
397 fail2:
398 efx_ef10_sriov_free_vf_vswitching(efx);
399 fail1:
400 efx->vf_count = 0;
401 netif_err(efx, probe, efx->net_dev,
402 "Failed to enable SRIOV VFs\n");
403 return rc;
404 }
405
406 static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force)
407 {
408 struct pci_dev *dev = efx->pci_dev;
409 unsigned int vfs_assigned = 0;
410
411 vfs_assigned = pci_vfs_assigned(dev);
412
413 if (vfs_assigned && !force) {
414 netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; "
415 "please detach them before disabling SR-IOV\n");
416 return -EBUSY;
417 }
418
419 if (!vfs_assigned)
420 pci_disable_sriov(dev);
421
422 efx_ef10_sriov_free_vf_vswitching(efx);
423 efx->vf_count = 0;
424 return 0;
425 }
426
427 int efx_ef10_sriov_configure(struct efx_nic *efx, int num_vfs)
428 {
429 if (num_vfs == 0)
430 return efx_ef10_pci_sriov_disable(efx, false);
431 else
432 return efx_ef10_pci_sriov_enable(efx, num_vfs);
433 }
434
435 int efx_ef10_sriov_init(struct efx_nic *efx)
436 {
437 return 0;
438 }
439
440 void efx_ef10_sriov_fini(struct efx_nic *efx)
441 {
442 struct efx_ef10_nic_data *nic_data = efx->nic_data;
443 unsigned int i;
444 int rc;
445
446 if (!nic_data->vf) {
447 /* Remove any un-assigned orphaned VFs */
448 if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev))
449 pci_disable_sriov(efx->pci_dev);
450 return;
451 }
452
453 /* Remove any VFs in the host */
454 for (i = 0; i < efx->vf_count; ++i) {
455 struct efx_nic *vf_efx = nic_data->vf[i].efx;
456
457 if (vf_efx)
458 vf_efx->pci_dev->driver->remove(vf_efx->pci_dev);
459 }
460
461 rc = efx_ef10_pci_sriov_disable(efx, true);
462 if (rc)
463 netif_dbg(efx, drv, efx->net_dev,
464 "Disabling SRIOV was not successful rc=%d\n", rc);
465 else
466 netif_dbg(efx, drv, efx->net_dev, "SRIOV disabled\n");
467 }
468
469 static int efx_ef10_vport_del_vf_mac(struct efx_nic *efx, unsigned int port_id,
470 u8 *mac)
471 {
472 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN);
473 MCDI_DECLARE_BUF_ERR(outbuf);
474 size_t outlen;
475 int rc;
476
477 MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id);
478 ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac);
479
480 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf,
481 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
482
483 return rc;
484 }
485
486 int efx_ef10_sriov_set_vf_mac(struct efx_nic *efx, int vf_i, u8 *mac)
487 {
488 struct efx_ef10_nic_data *nic_data = efx->nic_data;
489 struct ef10_vf *vf;
490 int rc;
491
492 if (!nic_data->vf)
493 return -EOPNOTSUPP;
494
495 if (vf_i >= efx->vf_count)
496 return -EINVAL;
497 vf = nic_data->vf + vf_i;
498
499 if (vf->efx) {
500 efx_device_detach_sync(vf->efx);
501 efx_net_stop(vf->efx->net_dev);
502
503 down_write(&vf->efx->filter_sem);
504 vf->efx->type->filter_table_remove(vf->efx);
505
506 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
507 if (rc) {
508 up_write(&vf->efx->filter_sem);
509 return rc;
510 }
511 }
512
513 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
514 if (rc)
515 return rc;
516
517 if (!is_zero_ether_addr(vf->mac)) {
518 rc = efx_ef10_vport_del_vf_mac(efx, vf->vport_id, vf->mac);
519 if (rc)
520 return rc;
521 }
522
523 if (!is_zero_ether_addr(mac)) {
524 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac);
525 if (rc) {
526 eth_zero_addr(vf->mac);
527 goto fail;
528 }
529 if (vf->efx)
530 ether_addr_copy(vf->efx->net_dev->dev_addr, mac);
531 }
532
533 ether_addr_copy(vf->mac, mac);
534
535 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
536 if (rc)
537 goto fail;
538
539 if (vf->efx) {
540 /* VF cannot use the vport_id that the PF created */
541 rc = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
542 if (rc) {
543 up_write(&vf->efx->filter_sem);
544 return rc;
545 }
546 vf->efx->type->filter_table_probe(vf->efx);
547 up_write(&vf->efx->filter_sem);
548 efx_net_open(vf->efx->net_dev);
549 efx_device_attach_if_not_resetting(vf->efx);
550 }
551
552 return 0;
553
554 fail:
555 eth_zero_addr(vf->mac);
556 return rc;
557 }
558
559 int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan,
560 u8 qos)
561 {
562 struct efx_ef10_nic_data *nic_data = efx->nic_data;
563 struct ef10_vf *vf;
564 u16 new_vlan;
565 int rc = 0, rc2 = 0;
566
567 if (vf_i >= efx->vf_count)
568 return -EINVAL;
569 if (qos != 0)
570 return -EINVAL;
571
572 vf = nic_data->vf + vf_i;
573
574 new_vlan = (vlan == 0) ? EFX_EF10_NO_VLAN : vlan;
575 if (new_vlan == vf->vlan)
576 return 0;
577
578 if (vf->efx) {
579 efx_device_detach_sync(vf->efx);
580 efx_net_stop(vf->efx->net_dev);
581
582 mutex_lock(&vf->efx->mac_lock);
583 down_write(&vf->efx->filter_sem);
584 vf->efx->type->filter_table_remove(vf->efx);
585
586 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
587 if (rc)
588 goto restore_filters;
589 }
590
591 if (vf->vport_assigned) {
592 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
593 if (rc) {
594 netif_warn(efx, drv, efx->net_dev,
595 "Failed to change vlan on VF %d.\n", vf_i);
596 netif_warn(efx, drv, efx->net_dev,
597 "This is likely because the VF is bound to a driver in a VM.\n");
598 netif_warn(efx, drv, efx->net_dev,
599 "Please unload the driver in the VM.\n");
600 goto restore_vadaptor;
601 }
602 vf->vport_assigned = 0;
603 }
604
605 if (!is_zero_ether_addr(vf->mac)) {
606 rc = efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
607 if (rc)
608 goto restore_evb_port;
609 }
610
611 if (vf->vport_id) {
612 rc = efx_ef10_vport_free(efx, vf->vport_id);
613 if (rc)
614 goto restore_mac;
615 vf->vport_id = 0;
616 }
617
618 /* Do the actual vlan change */
619 vf->vlan = new_vlan;
620
621 /* Restore everything in reverse order */
622 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
623 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
624 vf->vlan, &vf->vport_id);
625 if (rc)
626 goto reset_nic_up_write;
627
628 restore_mac:
629 if (!is_zero_ether_addr(vf->mac)) {
630 rc2 = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
631 if (rc2) {
632 eth_zero_addr(vf->mac);
633 goto reset_nic_up_write;
634 }
635 }
636
637 restore_evb_port:
638 rc2 = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
639 if (rc2)
640 goto reset_nic_up_write;
641 else
642 vf->vport_assigned = 1;
643
644 restore_vadaptor:
645 if (vf->efx) {
646 rc2 = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
647 if (rc2)
648 goto reset_nic_up_write;
649 }
650
651 restore_filters:
652 if (vf->efx) {
653 rc2 = vf->efx->type->filter_table_probe(vf->efx);
654 if (rc2)
655 goto reset_nic_up_write;
656
657 up_write(&vf->efx->filter_sem);
658 mutex_unlock(&vf->efx->mac_lock);
659
660 rc2 = efx_net_open(vf->efx->net_dev);
661 if (rc2)
662 goto reset_nic;
663
664 efx_device_attach_if_not_resetting(vf->efx);
665 }
666 return rc;
667
668 reset_nic_up_write:
669 if (vf->efx) {
670 up_write(&vf->efx->filter_sem);
671 mutex_unlock(&vf->efx->mac_lock);
672 }
673 reset_nic:
674 if (vf->efx) {
675 netif_err(efx, drv, efx->net_dev,
676 "Failed to restore VF - scheduling reset.\n");
677 efx_schedule_reset(vf->efx, RESET_TYPE_DATAPATH);
678 } else {
679 netif_err(efx, drv, efx->net_dev,
680 "Failed to restore the VF and cannot reset the VF "
681 "- VF is not functional.\n");
682 netif_err(efx, drv, efx->net_dev,
683 "Please reload the driver attached to the VF.\n");
684 }
685
686 return rc ? rc : rc2;
687 }
688
689 int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i,
690 bool spoofchk)
691 {
692 return spoofchk ? -EOPNOTSUPP : 0;
693 }
694
695 int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i,
696 int link_state)
697 {
698 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
699 struct efx_ef10_nic_data *nic_data = efx->nic_data;
700
701 BUILD_BUG_ON(IFLA_VF_LINK_STATE_AUTO !=
702 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_AUTO);
703 BUILD_BUG_ON(IFLA_VF_LINK_STATE_ENABLE !=
704 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_UP);
705 BUILD_BUG_ON(IFLA_VF_LINK_STATE_DISABLE !=
706 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_DOWN);
707 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
708 LINK_STATE_MODE_IN_FUNCTION_PF,
709 nic_data->pf_index,
710 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
711 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, link_state);
712 return efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
713 NULL, 0, NULL); /* don't care what old mode was */
714 }
715
716 int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf_i,
717 struct ifla_vf_info *ivf)
718 {
719 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
720 MCDI_DECLARE_BUF(outbuf, MC_CMD_LINK_STATE_MODE_OUT_LEN);
721
722 struct efx_ef10_nic_data *nic_data = efx->nic_data;
723 struct ef10_vf *vf;
724 size_t outlen;
725 int rc;
726
727 if (vf_i >= efx->vf_count)
728 return -EINVAL;
729
730 if (!nic_data->vf)
731 return -EOPNOTSUPP;
732
733 vf = nic_data->vf + vf_i;
734
735 ivf->vf = vf_i;
736 ivf->min_tx_rate = 0;
737 ivf->max_tx_rate = 0;
738 ether_addr_copy(ivf->mac, vf->mac);
739 ivf->vlan = (vf->vlan == EFX_EF10_NO_VLAN) ? 0 : vf->vlan;
740 ivf->qos = 0;
741
742 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
743 LINK_STATE_MODE_IN_FUNCTION_PF,
744 nic_data->pf_index,
745 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
746 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE,
747 MC_CMD_LINK_STATE_MODE_IN_DO_NOT_CHANGE);
748 rc = efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
749 outbuf, sizeof(outbuf), &outlen);
750 if (rc)
751 return rc;
752 if (outlen < MC_CMD_LINK_STATE_MODE_OUT_LEN)
753 return -EIO;
754 ivf->linkstate = MCDI_DWORD(outbuf, LINK_STATE_MODE_OUT_OLD_MODE);
755
756 return 0;
757 }
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