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1/****************************************************************************
2 * Driver for Solarflare network controllers and boards
3 * Copyright 2015 Solarflare Communications Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation, incorporated herein by reference.
8 */
9#include <linux/etherdevice.h>
10#include <linux/pci.h>
11#include <linux/module.h>
12#include "net_driver.h"
13#include "ef10_sriov.h"
14#include "efx.h"
15#include "nic.h"
16#include "mcdi_pcol.h"
17
18static int efx_ef10_evb_port_assign(struct efx_nic *efx, unsigned int port_id,
19 unsigned int vf_fn)
20{
21 MCDI_DECLARE_BUF(inbuf, MC_CMD_EVB_PORT_ASSIGN_IN_LEN);
22 struct efx_ef10_nic_data *nic_data = efx->nic_data;
23
24 MCDI_SET_DWORD(inbuf, EVB_PORT_ASSIGN_IN_PORT_ID, port_id);
25 MCDI_POPULATE_DWORD_2(inbuf, EVB_PORT_ASSIGN_IN_FUNCTION,
26 EVB_PORT_ASSIGN_IN_PF, nic_data->pf_index,
27 EVB_PORT_ASSIGN_IN_VF, vf_fn);
28
29 return efx_mcdi_rpc(efx, MC_CMD_EVB_PORT_ASSIGN, inbuf, sizeof(inbuf),
30 NULL, 0, NULL);
31}
32
33static int efx_ef10_vswitch_alloc(struct efx_nic *efx, unsigned int port_id,
34 unsigned int vswitch_type)
35{
36 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_ALLOC_IN_LEN);
37 int rc;
38
39 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_UPSTREAM_PORT_ID, port_id);
40 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_TYPE, vswitch_type);
41 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 2);
42 MCDI_POPULATE_DWORD_1(inbuf, VSWITCH_ALLOC_IN_FLAGS,
43 VSWITCH_ALLOC_IN_FLAG_AUTO_PORT, 0);
44
45 /* Quietly try to allocate 2 VLAN tags */
46 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VSWITCH_ALLOC, inbuf, sizeof(inbuf),
47 NULL, 0, NULL);
48
49 /* If 2 VLAN tags is too many, revert to trying with 1 VLAN tags */
50 if (rc == -EPROTO) {
51 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 1);
52 rc = efx_mcdi_rpc(efx, MC_CMD_VSWITCH_ALLOC, inbuf,
53 sizeof(inbuf), NULL, 0, NULL);
54 } else if (rc) {
55 efx_mcdi_display_error(efx, MC_CMD_VSWITCH_ALLOC,
56 MC_CMD_VSWITCH_ALLOC_IN_LEN,
57 NULL, 0, rc);
58 }
59 return rc;
60}
61
62static int efx_ef10_vswitch_free(struct efx_nic *efx, unsigned int port_id)
63{
64 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_FREE_IN_LEN);
65
66 MCDI_SET_DWORD(inbuf, VSWITCH_FREE_IN_UPSTREAM_PORT_ID, port_id);
67
68 return efx_mcdi_rpc(efx, MC_CMD_VSWITCH_FREE, inbuf, sizeof(inbuf),
69 NULL, 0, NULL);
70}
71
72static int efx_ef10_vport_alloc(struct efx_nic *efx,
73 unsigned int port_id_in,
74 unsigned int vport_type,
75 u16 vlan,
76 unsigned int *port_id_out)
77{
78 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_ALLOC_IN_LEN);
79 MCDI_DECLARE_BUF(outbuf, MC_CMD_VPORT_ALLOC_OUT_LEN);
80 size_t outlen;
81 int rc;
82
83 EFX_WARN_ON_PARANOID(!port_id_out);
84
85 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_UPSTREAM_PORT_ID, port_id_in);
86 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_TYPE, vport_type);
87 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_NUM_VLAN_TAGS,
88 (vlan != EFX_EF10_NO_VLAN));
89 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_FLAGS,
90 VPORT_ALLOC_IN_FLAG_AUTO_PORT, 0);
91 if (vlan != EFX_EF10_NO_VLAN)
92 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_VLAN_TAGS,
93 VPORT_ALLOC_IN_VLAN_TAG_0, vlan);
94
95 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_ALLOC, inbuf, sizeof(inbuf),
96 outbuf, sizeof(outbuf), &outlen);
97 if (rc)
98 return rc;
99 if (outlen < MC_CMD_VPORT_ALLOC_OUT_LEN)
100 return -EIO;
101
102 *port_id_out = MCDI_DWORD(outbuf, VPORT_ALLOC_OUT_VPORT_ID);
103 return 0;
104}
105
106static int efx_ef10_vport_free(struct efx_nic *efx, unsigned int port_id)
107{
108 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_FREE_IN_LEN);
109
110 MCDI_SET_DWORD(inbuf, VPORT_FREE_IN_VPORT_ID, port_id);
111
112 return efx_mcdi_rpc(efx, MC_CMD_VPORT_FREE, inbuf, sizeof(inbuf),
113 NULL, 0, NULL);
114}
115
116static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx)
117{
118 struct efx_ef10_nic_data *nic_data = efx->nic_data;
119 int i;
120
121 if (!nic_data->vf)
122 return;
123
124 for (i = 0; i < efx->vf_count; i++) {
125 struct ef10_vf *vf = nic_data->vf + i;
126
127 /* If VF is assigned, do not free the vport */
128 if (vf->pci_dev &&
129 vf->pci_dev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
130 continue;
131
132 if (vf->vport_assigned) {
133 efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, i);
134 vf->vport_assigned = 0;
135 }
136
137 if (!is_zero_ether_addr(vf->mac)) {
138 efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
139 eth_zero_addr(vf->mac);
140 }
141
142 if (vf->vport_id) {
143 efx_ef10_vport_free(efx, vf->vport_id);
144 vf->vport_id = 0;
145 }
146
147 vf->efx = NULL;
148 }
149}
150
151static void efx_ef10_sriov_free_vf_vswitching(struct efx_nic *efx)
152{
153 struct efx_ef10_nic_data *nic_data = efx->nic_data;
154
155 efx_ef10_sriov_free_vf_vports(efx);
156 kfree(nic_data->vf);
157 nic_data->vf = NULL;
158}
159
160static int efx_ef10_sriov_assign_vf_vport(struct efx_nic *efx,
161 unsigned int vf_i)
162{
163 struct efx_ef10_nic_data *nic_data = efx->nic_data;
164 struct ef10_vf *vf = nic_data->vf + vf_i;
165 int rc;
166
167 if (WARN_ON_ONCE(!nic_data->vf))
168 return -EOPNOTSUPP;
169
170 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
171 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
172 vf->vlan, &vf->vport_id);
173 if (rc)
174 return rc;
175
176 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
177 if (rc) {
178 eth_zero_addr(vf->mac);
179 return rc;
180 }
181
182 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
183 if (rc)
184 return rc;
185
186 vf->vport_assigned = 1;
187 return 0;
188}
189
190static int efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic *efx)
191{
192 struct efx_ef10_nic_data *nic_data = efx->nic_data;
193 unsigned int i;
194 int rc;
195
196 nic_data->vf = kcalloc(efx->vf_count, sizeof(struct ef10_vf),
197 GFP_KERNEL);
198 if (!nic_data->vf)
199 return -ENOMEM;
200
201 for (i = 0; i < efx->vf_count; i++) {
202 random_ether_addr(nic_data->vf[i].mac);
203 nic_data->vf[i].efx = NULL;
204 nic_data->vf[i].vlan = EFX_EF10_NO_VLAN;
205
206 rc = efx_ef10_sriov_assign_vf_vport(efx, i);
207 if (rc)
208 goto fail;
209 }
210
211 return 0;
212fail:
213 efx_ef10_sriov_free_vf_vports(efx);
214 kfree(nic_data->vf);
215 nic_data->vf = NULL;
216 return rc;
217}
218
219static int efx_ef10_sriov_restore_vf_vswitching(struct efx_nic *efx)
220{
221 unsigned int i;
222 int rc;
223
224 for (i = 0; i < efx->vf_count; i++) {
225 rc = efx_ef10_sriov_assign_vf_vport(efx, i);
226 if (rc)
227 goto fail;
228 }
229
230 return 0;
231fail:
232 efx_ef10_sriov_free_vf_vswitching(efx);
233 return rc;
234}
235
236static int efx_ef10_vadaptor_alloc_set_features(struct efx_nic *efx)
237{
238 struct efx_ef10_nic_data *nic_data = efx->nic_data;
239 u32 port_flags;
240 int rc;
241
242 rc = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
243 if (rc)
244 goto fail_vadaptor_alloc;
245
246 rc = efx_ef10_vadaptor_query(efx, nic_data->vport_id,
247 &port_flags, NULL, NULL);
248 if (rc)
249 goto fail_vadaptor_query;
250
251 if (port_flags &
252 (1 << MC_CMD_VPORT_ALLOC_IN_FLAG_VLAN_RESTRICT_LBN))
253 efx->fixed_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
254 else
255 efx->fixed_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
256
257 return 0;
258
259fail_vadaptor_query:
260 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
261fail_vadaptor_alloc:
262 return rc;
263}
264
265/* On top of the default firmware vswitch setup, create a VEB vswitch and
266 * expansion vport for use by this function.
267 */
268int efx_ef10_vswitching_probe_pf(struct efx_nic *efx)
269{
270 struct efx_ef10_nic_data *nic_data = efx->nic_data;
271 struct net_device *net_dev = efx->net_dev;
272 int rc;
273
274 if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) {
275 /* vswitch not needed as we have no VFs */
276 efx_ef10_vadaptor_alloc_set_features(efx);
277 return 0;
278 }
279
280 rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED,
281 MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB);
282 if (rc)
283 goto fail1;
284
285 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
286 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
287 EFX_EF10_NO_VLAN, &nic_data->vport_id);
288 if (rc)
289 goto fail2;
290
291 rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id, net_dev->dev_addr);
292 if (rc)
293 goto fail3;
294 ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr);
295
296 rc = efx_ef10_vadaptor_alloc_set_features(efx);
297 if (rc)
298 goto fail4;
299
300 return 0;
301fail4:
302 efx_ef10_vport_del_mac(efx, nic_data->vport_id, nic_data->vport_mac);
303 eth_zero_addr(nic_data->vport_mac);
304fail3:
305 efx_ef10_vport_free(efx, nic_data->vport_id);
306 nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
307fail2:
308 efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED);
309fail1:
310 return rc;
311}
312
313int efx_ef10_vswitching_probe_vf(struct efx_nic *efx)
314{
315 return efx_ef10_vadaptor_alloc_set_features(efx);
316}
317
318int efx_ef10_vswitching_restore_pf(struct efx_nic *efx)
319{
320 struct efx_ef10_nic_data *nic_data = efx->nic_data;
321 int rc;
322
323 if (!nic_data->must_probe_vswitching)
324 return 0;
325
326 rc = efx_ef10_vswitching_probe_pf(efx);
327 if (rc)
328 goto fail;
329
330 rc = efx_ef10_sriov_restore_vf_vswitching(efx);
331 if (rc)
332 goto fail;
333
334 nic_data->must_probe_vswitching = false;
335fail:
336 return rc;
337}
338
339int efx_ef10_vswitching_restore_vf(struct efx_nic *efx)
340{
341 struct efx_ef10_nic_data *nic_data = efx->nic_data;
342 int rc;
343
344 if (!nic_data->must_probe_vswitching)
345 return 0;
346
347 rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
348 if (rc)
349 return rc;
350
351 nic_data->must_probe_vswitching = false;
352 return 0;
353}
354
355void efx_ef10_vswitching_remove_pf(struct efx_nic *efx)
356{
357 struct efx_ef10_nic_data *nic_data = efx->nic_data;
358
359 efx_ef10_sriov_free_vf_vswitching(efx);
360
361 efx_ef10_vadaptor_free(efx, nic_data->vport_id);
362
363 if (nic_data->vport_id == EVB_PORT_ID_ASSIGNED)
364 return; /* No vswitch was ever created */
365
366 if (!is_zero_ether_addr(nic_data->vport_mac)) {
367 efx_ef10_vport_del_mac(efx, nic_data->vport_id,
368 efx->net_dev->dev_addr);
369 eth_zero_addr(nic_data->vport_mac);
370 }
371 efx_ef10_vport_free(efx, nic_data->vport_id);
372 nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
373
374 /* Only free the vswitch if no VFs are assigned */
375 if (!pci_vfs_assigned(efx->pci_dev))
376 efx_ef10_vswitch_free(efx, nic_data->vport_id);
377}
378
379void efx_ef10_vswitching_remove_vf(struct efx_nic *efx)
380{
381 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
382}
383
384static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs)
385{
386 int rc = 0;
387 struct pci_dev *dev = efx->pci_dev;
388
389 efx->vf_count = num_vfs;
390
391 rc = efx_ef10_sriov_alloc_vf_vswitching(efx);
392 if (rc)
393 goto fail1;
394
395 rc = pci_enable_sriov(dev, num_vfs);
396 if (rc)
397 goto fail2;
398
399 return 0;
400fail2:
401 efx_ef10_sriov_free_vf_vswitching(efx);
402fail1:
403 efx->vf_count = 0;
404 netif_err(efx, probe, efx->net_dev,
405 "Failed to enable SRIOV VFs\n");
406 return rc;
407}
408
409static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force)
410{
411 struct pci_dev *dev = efx->pci_dev;
412 unsigned int vfs_assigned = 0;
413
414 vfs_assigned = pci_vfs_assigned(dev);
415
416 if (vfs_assigned && !force) {
417 netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; "
418 "please detach them before disabling SR-IOV\n");
419 return -EBUSY;
420 }
421
422 if (!vfs_assigned)
423 pci_disable_sriov(dev);
424
425 efx_ef10_sriov_free_vf_vswitching(efx);
426 efx->vf_count = 0;
427 return 0;
428}
429
430int efx_ef10_sriov_configure(struct efx_nic *efx, int num_vfs)
431{
432 if (num_vfs == 0)
433 return efx_ef10_pci_sriov_disable(efx, false);
434 else
435 return efx_ef10_pci_sriov_enable(efx, num_vfs);
436}
437
438int efx_ef10_sriov_init(struct efx_nic *efx)
439{
440 return 0;
441}
442
443void efx_ef10_sriov_fini(struct efx_nic *efx)
444{
445 struct efx_ef10_nic_data *nic_data = efx->nic_data;
446 unsigned int i;
447 int rc;
448
449 if (!nic_data->vf) {
450 /* Remove any un-assigned orphaned VFs */
451 if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev))
452 pci_disable_sriov(efx->pci_dev);
453 return;
454 }
455
456 /* Remove any VFs in the host */
457 for (i = 0; i < efx->vf_count; ++i) {
458 struct efx_nic *vf_efx = nic_data->vf[i].efx;
459
460 if (vf_efx)
461 vf_efx->pci_dev->driver->remove(vf_efx->pci_dev);
462 }
463
464 rc = efx_ef10_pci_sriov_disable(efx, true);
465 if (rc)
466 netif_dbg(efx, drv, efx->net_dev,
467 "Disabling SRIOV was not successful rc=%d\n", rc);
468 else
469 netif_dbg(efx, drv, efx->net_dev, "SRIOV disabled\n");
470}
471
472static int efx_ef10_vport_del_vf_mac(struct efx_nic *efx, unsigned int port_id,
473 u8 *mac)
474{
475 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN);
476 MCDI_DECLARE_BUF_ERR(outbuf);
477 size_t outlen;
478 int rc;
479
480 MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id);
481 ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac);
482
483 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf,
484 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
485
486 return rc;
487}
488
489int efx_ef10_sriov_set_vf_mac(struct efx_nic *efx, int vf_i, u8 *mac)
490{
491 struct efx_ef10_nic_data *nic_data = efx->nic_data;
492 struct ef10_vf *vf;
493 int rc;
494
495 if (!nic_data->vf)
496 return -EOPNOTSUPP;
497
498 if (vf_i >= efx->vf_count)
499 return -EINVAL;
500 vf = nic_data->vf + vf_i;
501
502 if (vf->efx) {
503 efx_device_detach_sync(vf->efx);
504 efx_net_stop(vf->efx->net_dev);
505
506 down_write(&vf->efx->filter_sem);
507 vf->efx->type->filter_table_remove(vf->efx);
508
509 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
510 if (rc) {
511 up_write(&vf->efx->filter_sem);
512 return rc;
513 }
514 }
515
516 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
517 if (rc)
518 return rc;
519
520 if (!is_zero_ether_addr(vf->mac)) {
521 rc = efx_ef10_vport_del_vf_mac(efx, vf->vport_id, vf->mac);
522 if (rc)
523 return rc;
524 }
525
526 if (!is_zero_ether_addr(mac)) {
527 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac);
528 if (rc) {
529 eth_zero_addr(vf->mac);
530 goto fail;
531 }
532 if (vf->efx)
533 ether_addr_copy(vf->efx->net_dev->dev_addr, mac);
534 }
535
536 ether_addr_copy(vf->mac, mac);
537
538 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
539 if (rc)
540 goto fail;
541
542 if (vf->efx) {
543 /* VF cannot use the vport_id that the PF created */
544 rc = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
545 if (rc) {
546 up_write(&vf->efx->filter_sem);
547 return rc;
548 }
549 vf->efx->type->filter_table_probe(vf->efx);
550 up_write(&vf->efx->filter_sem);
551 efx_net_open(vf->efx->net_dev);
552 efx_device_attach_if_not_resetting(vf->efx);
553 }
554
555 return 0;
556
557fail:
558 eth_zero_addr(vf->mac);
559 return rc;
560}
561
562int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan,
563 u8 qos)
564{
565 struct efx_ef10_nic_data *nic_data = efx->nic_data;
566 struct ef10_vf *vf;
567 u16 old_vlan, new_vlan;
568 int rc = 0, rc2 = 0;
569
570 if (vf_i >= efx->vf_count)
571 return -EINVAL;
572 if (qos != 0)
573 return -EINVAL;
574
575 vf = nic_data->vf + vf_i;
576
577 new_vlan = (vlan == 0) ? EFX_EF10_NO_VLAN : vlan;
578 if (new_vlan == vf->vlan)
579 return 0;
580
581 if (vf->efx) {
582 efx_device_detach_sync(vf->efx);
583 efx_net_stop(vf->efx->net_dev);
584
585 mutex_lock(&vf->efx->mac_lock);
586 down_write(&vf->efx->filter_sem);
587 vf->efx->type->filter_table_remove(vf->efx);
588
589 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
590 if (rc)
591 goto restore_filters;
592 }
593
594 if (vf->vport_assigned) {
595 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
596 if (rc) {
597 netif_warn(efx, drv, efx->net_dev,
598 "Failed to change vlan on VF %d.\n", vf_i);
599 netif_warn(efx, drv, efx->net_dev,
600 "This is likely because the VF is bound to a driver in a VM.\n");
601 netif_warn(efx, drv, efx->net_dev,
602 "Please unload the driver in the VM.\n");
603 goto restore_vadaptor;
604 }
605 vf->vport_assigned = 0;
606 }
607
608 if (!is_zero_ether_addr(vf->mac)) {
609 rc = efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
610 if (rc)
611 goto restore_evb_port;
612 }
613
614 if (vf->vport_id) {
615 rc = efx_ef10_vport_free(efx, vf->vport_id);
616 if (rc)
617 goto restore_mac;
618 vf->vport_id = 0;
619 }
620
621 /* Do the actual vlan change */
622 old_vlan = vf->vlan;
623 vf->vlan = new_vlan;
624
625 /* Restore everything in reverse order */
626 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
627 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
628 vf->vlan, &vf->vport_id);
629 if (rc)
630 goto reset_nic_up_write;
631
632restore_mac:
633 if (!is_zero_ether_addr(vf->mac)) {
634 rc2 = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
635 if (rc2) {
636 eth_zero_addr(vf->mac);
637 goto reset_nic_up_write;
638 }
639 }
640
641restore_evb_port:
642 rc2 = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
643 if (rc2)
644 goto reset_nic_up_write;
645 else
646 vf->vport_assigned = 1;
647
648restore_vadaptor:
649 if (vf->efx) {
650 rc2 = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
651 if (rc2)
652 goto reset_nic_up_write;
653 }
654
655restore_filters:
656 if (vf->efx) {
657 rc2 = vf->efx->type->filter_table_probe(vf->efx);
658 if (rc2)
659 goto reset_nic_up_write;
660
661 up_write(&vf->efx->filter_sem);
662 mutex_unlock(&vf->efx->mac_lock);
663
664 rc2 = efx_net_open(vf->efx->net_dev);
665 if (rc2)
666 goto reset_nic;
667
668 efx_device_attach_if_not_resetting(vf->efx);
669 }
670 return rc;
671
672reset_nic_up_write:
673 if (vf->efx) {
674 up_write(&vf->efx->filter_sem);
675 mutex_unlock(&vf->efx->mac_lock);
676 }
677reset_nic:
678 if (vf->efx) {
679 netif_err(efx, drv, efx->net_dev,
680 "Failed to restore VF - scheduling reset.\n");
681 efx_schedule_reset(vf->efx, RESET_TYPE_DATAPATH);
682 } else {
683 netif_err(efx, drv, efx->net_dev,
684 "Failed to restore the VF and cannot reset the VF "
685 "- VF is not functional.\n");
686 netif_err(efx, drv, efx->net_dev,
687 "Please reload the driver attached to the VF.\n");
688 }
689
690 return rc ? rc : rc2;
691}
692
693int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i,
694 bool spoofchk)
695{
696 return spoofchk ? -EOPNOTSUPP : 0;
697}
698
699int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i,
700 int link_state)
701{
702 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
703 struct efx_ef10_nic_data *nic_data = efx->nic_data;
704
705 BUILD_BUG_ON(IFLA_VF_LINK_STATE_AUTO !=
706 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_AUTO);
707 BUILD_BUG_ON(IFLA_VF_LINK_STATE_ENABLE !=
708 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_UP);
709 BUILD_BUG_ON(IFLA_VF_LINK_STATE_DISABLE !=
710 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_DOWN);
711 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
712 LINK_STATE_MODE_IN_FUNCTION_PF,
713 nic_data->pf_index,
714 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
715 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, link_state);
716 return efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
717 NULL, 0, NULL); /* don't care what old mode was */
718}
719
720int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf_i,
721 struct ifla_vf_info *ivf)
722{
723 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
724 MCDI_DECLARE_BUF(outbuf, MC_CMD_LINK_STATE_MODE_OUT_LEN);
725
726 struct efx_ef10_nic_data *nic_data = efx->nic_data;
727 struct ef10_vf *vf;
728 size_t outlen;
729 int rc;
730
731 if (vf_i >= efx->vf_count)
732 return -EINVAL;
733
734 if (!nic_data->vf)
735 return -EOPNOTSUPP;
736
737 vf = nic_data->vf + vf_i;
738
739 ivf->vf = vf_i;
740 ivf->min_tx_rate = 0;
741 ivf->max_tx_rate = 0;
742 ether_addr_copy(ivf->mac, vf->mac);
743 ivf->vlan = (vf->vlan == EFX_EF10_NO_VLAN) ? 0 : vf->vlan;
744 ivf->qos = 0;
745
746 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
747 LINK_STATE_MODE_IN_FUNCTION_PF,
748 nic_data->pf_index,
749 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
750 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE,
751 MC_CMD_LINK_STATE_MODE_IN_DO_NOT_CHANGE);
752 rc = efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
753 outbuf, sizeof(outbuf), &outlen);
754 if (rc)
755 return rc;
756 if (outlen < MC_CMD_LINK_STATE_MODE_OUT_LEN)
757 return -EIO;
758 ivf->linkstate = MCDI_DWORD(outbuf, LINK_STATE_MODE_OUT_OLD_MODE);
759
760 return 0;
761}