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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / net / ethernet / sfc / ef10_sriov.c
bloba949b9d27329e356146a18781cf92a14812c1631
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/pci.h>
10 #include <linux/module.h>
11 #include "net_driver.h"
12 #include "ef10_sriov.h"
13 #include "efx.h"
14 #include "nic.h"
15 #include "mcdi_pcol.h"
16
17 static int efx_ef10_evb_port_assign(struct efx_nic *efx, unsigned int port_id,
18 unsigned int vf_fn)
19 {
20 MCDI_DECLARE_BUF(inbuf, MC_CMD_EVB_PORT_ASSIGN_IN_LEN);
21 struct efx_ef10_nic_data *nic_data = efx->nic_data;
22
23 MCDI_SET_DWORD(inbuf, EVB_PORT_ASSIGN_IN_PORT_ID, port_id);
24 MCDI_POPULATE_DWORD_2(inbuf, EVB_PORT_ASSIGN_IN_FUNCTION,
25 EVB_PORT_ASSIGN_IN_PF, nic_data->pf_index,
26 EVB_PORT_ASSIGN_IN_VF, vf_fn);
27
28 return efx_mcdi_rpc(efx, MC_CMD_EVB_PORT_ASSIGN, inbuf, sizeof(inbuf),
29 NULL, 0, NULL);
30 }
31
32 static int efx_ef10_vswitch_alloc(struct efx_nic *efx, unsigned int port_id,
33 unsigned int vswitch_type)
34 {
35 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_ALLOC_IN_LEN);
36 int rc;
37
38 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_UPSTREAM_PORT_ID, port_id);
39 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_TYPE, vswitch_type);
40 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 2);
41 MCDI_POPULATE_DWORD_1(inbuf, VSWITCH_ALLOC_IN_FLAGS,
42 VSWITCH_ALLOC_IN_FLAG_AUTO_PORT, 0);
43
44 /* Quietly try to allocate 2 VLAN tags */
45 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_VSWITCH_ALLOC, inbuf, sizeof(inbuf),
46 NULL, 0, NULL);
47
48 /* If 2 VLAN tags is too many, revert to trying with 1 VLAN tags */
49 if (rc == -EPROTO) {
50 MCDI_SET_DWORD(inbuf, VSWITCH_ALLOC_IN_NUM_VLAN_TAGS, 1);
51 rc = efx_mcdi_rpc(efx, MC_CMD_VSWITCH_ALLOC, inbuf,
52 sizeof(inbuf), NULL, 0, NULL);
53 } else if (rc) {
54 efx_mcdi_display_error(efx, MC_CMD_VSWITCH_ALLOC,
55 MC_CMD_VSWITCH_ALLOC_IN_LEN,
56 NULL, 0, rc);
57 }
58 return rc;
59 }
60
61 static int efx_ef10_vswitch_free(struct efx_nic *efx, unsigned int port_id)
62 {
63 MCDI_DECLARE_BUF(inbuf, MC_CMD_VSWITCH_FREE_IN_LEN);
64
65 MCDI_SET_DWORD(inbuf, VSWITCH_FREE_IN_UPSTREAM_PORT_ID, port_id);
66
67 return efx_mcdi_rpc(efx, MC_CMD_VSWITCH_FREE, inbuf, sizeof(inbuf),
68 NULL, 0, NULL);
69 }
70
71 static int efx_ef10_vport_alloc(struct efx_nic *efx,
72 unsigned int port_id_in,
73 unsigned int vport_type,
74 u16 vlan,
75 unsigned int *port_id_out)
76 {
77 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_ALLOC_IN_LEN);
78 MCDI_DECLARE_BUF(outbuf, MC_CMD_VPORT_ALLOC_OUT_LEN);
79 size_t outlen;
80 int rc;
81
82 EFX_WARN_ON_PARANOID(!port_id_out);
83
84 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_UPSTREAM_PORT_ID, port_id_in);
85 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_TYPE, vport_type);
86 MCDI_SET_DWORD(inbuf, VPORT_ALLOC_IN_NUM_VLAN_TAGS,
87 (vlan != EFX_EF10_NO_VLAN));
88 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_FLAGS,
89 VPORT_ALLOC_IN_FLAG_AUTO_PORT, 0);
90 if (vlan != EFX_EF10_NO_VLAN)
91 MCDI_POPULATE_DWORD_1(inbuf, VPORT_ALLOC_IN_VLAN_TAGS,
92 VPORT_ALLOC_IN_VLAN_TAG_0, vlan);
93
94 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_ALLOC, inbuf, sizeof(inbuf),
95 outbuf, sizeof(outbuf), &outlen);
96 if (rc)
97 return rc;
98 if (outlen < MC_CMD_VPORT_ALLOC_OUT_LEN)
99 return -EIO;
100
101 *port_id_out = MCDI_DWORD(outbuf, VPORT_ALLOC_OUT_VPORT_ID);
102 return 0;
103 }
104
105 static int efx_ef10_vport_free(struct efx_nic *efx, unsigned int port_id)
106 {
107 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_FREE_IN_LEN);
108
109 MCDI_SET_DWORD(inbuf, VPORT_FREE_IN_VPORT_ID, port_id);
110
111 return efx_mcdi_rpc(efx, MC_CMD_VPORT_FREE, inbuf, sizeof(inbuf),
112 NULL, 0, NULL);
113 }
114
115 static void efx_ef10_sriov_free_vf_vports(struct efx_nic *efx)
116 {
117 struct efx_ef10_nic_data *nic_data = efx->nic_data;
118 int i;
119
120 if (!nic_data->vf)
121 return;
122
123 for (i = 0; i < efx->vf_count; i++) {
124 struct ef10_vf *vf = nic_data->vf + i;
125
126 /* If VF is assigned, do not free the vport */
127 if (vf->pci_dev &&
128 vf->pci_dev->dev_flags & PCI_DEV_FLAGS_ASSIGNED)
129 continue;
130
131 if (vf->vport_assigned) {
132 efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, i);
133 vf->vport_assigned = 0;
134 }
135
136 if (!is_zero_ether_addr(vf->mac)) {
137 efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
138 eth_zero_addr(vf->mac);
139 }
140
141 if (vf->vport_id) {
142 efx_ef10_vport_free(efx, vf->vport_id);
143 vf->vport_id = 0;
144 }
145
146 vf->efx = NULL;
147 }
148 }
149
150 static void efx_ef10_sriov_free_vf_vswitching(struct efx_nic *efx)
151 {
152 struct efx_ef10_nic_data *nic_data = efx->nic_data;
153
154 efx_ef10_sriov_free_vf_vports(efx);
155 kfree(nic_data->vf);
156 nic_data->vf = NULL;
157 }
158
159 static int efx_ef10_sriov_assign_vf_vport(struct efx_nic *efx,
160 unsigned int vf_i)
161 {
162 struct efx_ef10_nic_data *nic_data = efx->nic_data;
163 struct ef10_vf *vf = nic_data->vf + vf_i;
164 int rc;
165
166 if (WARN_ON_ONCE(!nic_data->vf))
167 return -EOPNOTSUPP;
168
169 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
170 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
171 vf->vlan, &vf->vport_id);
172 if (rc)
173 return rc;
174
175 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
176 if (rc) {
177 eth_zero_addr(vf->mac);
178 return rc;
179 }
180
181 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
182 if (rc)
183 return rc;
184
185 vf->vport_assigned = 1;
186 return 0;
187 }
188
189 static int efx_ef10_sriov_alloc_vf_vswitching(struct efx_nic *efx)
190 {
191 struct efx_ef10_nic_data *nic_data = efx->nic_data;
192 unsigned int i;
193 int rc;
194
195 nic_data->vf = kcalloc(efx->vf_count, sizeof(struct ef10_vf),
196 GFP_KERNEL);
197 if (!nic_data->vf)
198 return -ENOMEM;
199
200 for (i = 0; i < efx->vf_count; i++) {
201 random_ether_addr(nic_data->vf[i].mac);
202 nic_data->vf[i].efx = NULL;
203 nic_data->vf[i].vlan = EFX_EF10_NO_VLAN;
204
205 rc = efx_ef10_sriov_assign_vf_vport(efx, i);
206 if (rc)
207 goto fail;
208 }
209
210 return 0;
211 fail:
212 efx_ef10_sriov_free_vf_vports(efx);
213 kfree(nic_data->vf);
214 nic_data->vf = NULL;
215 return rc;
216 }
217
218 static int efx_ef10_sriov_restore_vf_vswitching(struct efx_nic *efx)
219 {
220 unsigned int i;
221 int rc;
222
223 for (i = 0; i < efx->vf_count; i++) {
224 rc = efx_ef10_sriov_assign_vf_vport(efx, i);
225 if (rc)
226 goto fail;
227 }
228
229 return 0;
230 fail:
231 efx_ef10_sriov_free_vf_vswitching(efx);
232 return rc;
233 }
234
235 static int efx_ef10_vadaptor_alloc_set_features(struct efx_nic *efx)
236 {
237 struct efx_ef10_nic_data *nic_data = efx->nic_data;
238 u32 port_flags;
239 int rc;
240
241 rc = efx_ef10_vadaptor_alloc(efx, nic_data->vport_id);
242 if (rc)
243 goto fail_vadaptor_alloc;
244
245 rc = efx_ef10_vadaptor_query(efx, nic_data->vport_id,
246 &port_flags, NULL, NULL);
247 if (rc)
248 goto fail_vadaptor_query;
249
250 if (port_flags &
251 (1 << MC_CMD_VPORT_ALLOC_IN_FLAG_VLAN_RESTRICT_LBN))
252 efx->fixed_features |= NETIF_F_HW_VLAN_CTAG_FILTER;
253 else
254 efx->fixed_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
255
256 return 0;
257
258 fail_vadaptor_query:
259 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
260 fail_vadaptor_alloc:
261 return rc;
262 }
263
264 /* On top of the default firmware vswitch setup, create a VEB vswitch and
265 * expansion vport for use by this function.
266 */
267 int efx_ef10_vswitching_probe_pf(struct efx_nic *efx)
268 {
269 struct efx_ef10_nic_data *nic_data = efx->nic_data;
270 struct net_device *net_dev = efx->net_dev;
271 int rc;
272
273 if (pci_sriov_get_totalvfs(efx->pci_dev) <= 0) {
274 /* vswitch not needed as we have no VFs */
275 efx_ef10_vadaptor_alloc_set_features(efx);
276 return 0;
277 }
278
279 rc = efx_ef10_vswitch_alloc(efx, EVB_PORT_ID_ASSIGNED,
280 MC_CMD_VSWITCH_ALLOC_IN_VSWITCH_TYPE_VEB);
281 if (rc)
282 goto fail1;
283
284 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
285 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
286 EFX_EF10_NO_VLAN, &nic_data->vport_id);
287 if (rc)
288 goto fail2;
289
290 rc = efx_ef10_vport_add_mac(efx, nic_data->vport_id, net_dev->dev_addr);
291 if (rc)
292 goto fail3;
293 ether_addr_copy(nic_data->vport_mac, net_dev->dev_addr);
294
295 rc = efx_ef10_vadaptor_alloc_set_features(efx);
296 if (rc)
297 goto fail4;
298
299 return 0;
300 fail4:
301 efx_ef10_vport_del_mac(efx, nic_data->vport_id, nic_data->vport_mac);
302 eth_zero_addr(nic_data->vport_mac);
303 fail3:
304 efx_ef10_vport_free(efx, nic_data->vport_id);
305 nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
306 fail2:
307 efx_ef10_vswitch_free(efx, EVB_PORT_ID_ASSIGNED);
308 fail1:
309 return rc;
310 }
311
312 int efx_ef10_vswitching_probe_vf(struct efx_nic *efx)
313 {
314 return efx_ef10_vadaptor_alloc_set_features(efx);
315 }
316
317 int efx_ef10_vswitching_restore_pf(struct efx_nic *efx)
318 {
319 struct efx_ef10_nic_data *nic_data = efx->nic_data;
320 int rc;
321
322 if (!nic_data->must_probe_vswitching)
323 return 0;
324
325 rc = efx_ef10_vswitching_probe_pf(efx);
326 if (rc)
327 goto fail;
328
329 rc = efx_ef10_sriov_restore_vf_vswitching(efx);
330 if (rc)
331 goto fail;
332
333 nic_data->must_probe_vswitching = false;
334 fail:
335 return rc;
336 }
337
338 int efx_ef10_vswitching_restore_vf(struct efx_nic *efx)
339 {
340 struct efx_ef10_nic_data *nic_data = efx->nic_data;
341 int rc;
342
343 if (!nic_data->must_probe_vswitching)
344 return 0;
345
346 rc = efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
347 if (rc)
348 return rc;
349
350 nic_data->must_probe_vswitching = false;
351 return 0;
352 }
353
354 void efx_ef10_vswitching_remove_pf(struct efx_nic *efx)
355 {
356 struct efx_ef10_nic_data *nic_data = efx->nic_data;
357
358 efx_ef10_sriov_free_vf_vswitching(efx);
359
360 efx_ef10_vadaptor_free(efx, nic_data->vport_id);
361
362 if (nic_data->vport_id == EVB_PORT_ID_ASSIGNED)
363 return; /* No vswitch was ever created */
364
365 if (!is_zero_ether_addr(nic_data->vport_mac)) {
366 efx_ef10_vport_del_mac(efx, nic_data->vport_id,
367 efx->net_dev->dev_addr);
368 eth_zero_addr(nic_data->vport_mac);
369 }
370 efx_ef10_vport_free(efx, nic_data->vport_id);
371 nic_data->vport_id = EVB_PORT_ID_ASSIGNED;
372
373 /* Only free the vswitch if no VFs are assigned */
374 if (!pci_vfs_assigned(efx->pci_dev))
375 efx_ef10_vswitch_free(efx, nic_data->vport_id);
376 }
377
378 void efx_ef10_vswitching_remove_vf(struct efx_nic *efx)
379 {
380 efx_ef10_vadaptor_free(efx, EVB_PORT_ID_ASSIGNED);
381 }
382
383 static int efx_ef10_pci_sriov_enable(struct efx_nic *efx, int num_vfs)
384 {
385 int rc = 0;
386 struct pci_dev *dev = efx->pci_dev;
387
388 efx->vf_count = num_vfs;
389
390 rc = efx_ef10_sriov_alloc_vf_vswitching(efx);
391 if (rc)
392 goto fail1;
393
394 rc = pci_enable_sriov(dev, num_vfs);
395 if (rc)
396 goto fail2;
397
398 return 0;
399 fail2:
400 efx_ef10_sriov_free_vf_vswitching(efx);
401 fail1:
402 efx->vf_count = 0;
403 netif_err(efx, probe, efx->net_dev,
404 "Failed to enable SRIOV VFs\n");
405 return rc;
406 }
407
408 static int efx_ef10_pci_sriov_disable(struct efx_nic *efx, bool force)
409 {
410 struct pci_dev *dev = efx->pci_dev;
411 unsigned int vfs_assigned = 0;
412
413 vfs_assigned = pci_vfs_assigned(dev);
414
415 if (vfs_assigned && !force) {
416 netif_info(efx, drv, efx->net_dev, "VFs are assigned to guests; "
417 "please detach them before disabling SR-IOV\n");
418 return -EBUSY;
419 }
420
421 if (!vfs_assigned)
422 pci_disable_sriov(dev);
423
424 efx_ef10_sriov_free_vf_vswitching(efx);
425 efx->vf_count = 0;
426 return 0;
427 }
428
429 int efx_ef10_sriov_configure(struct efx_nic *efx, int num_vfs)
430 {
431 if (num_vfs == 0)
432 return efx_ef10_pci_sriov_disable(efx, false);
433 else
434 return efx_ef10_pci_sriov_enable(efx, num_vfs);
435 }
436
437 int efx_ef10_sriov_init(struct efx_nic *efx)
438 {
439 return 0;
440 }
441
442 void efx_ef10_sriov_fini(struct efx_nic *efx)
443 {
444 struct efx_ef10_nic_data *nic_data = efx->nic_data;
445 unsigned int i;
446 int rc;
447
448 if (!nic_data->vf) {
449 /* Remove any un-assigned orphaned VFs */
450 if (pci_num_vf(efx->pci_dev) && !pci_vfs_assigned(efx->pci_dev))
451 pci_disable_sriov(efx->pci_dev);
452 return;
453 }
454
455 /* Remove any VFs in the host */
456 for (i = 0; i < efx->vf_count; ++i) {
457 struct efx_nic *vf_efx = nic_data->vf[i].efx;
458
459 if (vf_efx)
460 vf_efx->pci_dev->driver->remove(vf_efx->pci_dev);
461 }
462
463 rc = efx_ef10_pci_sriov_disable(efx, true);
464 if (rc)
465 netif_dbg(efx, drv, efx->net_dev,
466 "Disabling SRIOV was not successful rc=%d\n", rc);
467 else
468 netif_dbg(efx, drv, efx->net_dev, "SRIOV disabled\n");
469 }
470
471 static int efx_ef10_vport_del_vf_mac(struct efx_nic *efx, unsigned int port_id,
472 u8 *mac)
473 {
474 MCDI_DECLARE_BUF(inbuf, MC_CMD_VPORT_DEL_MAC_ADDRESS_IN_LEN);
475 MCDI_DECLARE_BUF_ERR(outbuf);
476 size_t outlen;
477 int rc;
478
479 MCDI_SET_DWORD(inbuf, VPORT_DEL_MAC_ADDRESS_IN_VPORT_ID, port_id);
480 ether_addr_copy(MCDI_PTR(inbuf, VPORT_DEL_MAC_ADDRESS_IN_MACADDR), mac);
481
482 rc = efx_mcdi_rpc(efx, MC_CMD_VPORT_DEL_MAC_ADDRESS, inbuf,
483 sizeof(inbuf), outbuf, sizeof(outbuf), &outlen);
484
485 return rc;
486 }
487
488 int efx_ef10_sriov_set_vf_mac(struct efx_nic *efx, int vf_i, u8 *mac)
489 {
490 struct efx_ef10_nic_data *nic_data = efx->nic_data;
491 struct ef10_vf *vf;
492 int rc;
493
494 if (!nic_data->vf)
495 return -EOPNOTSUPP;
496
497 if (vf_i >= efx->vf_count)
498 return -EINVAL;
499 vf = nic_data->vf + vf_i;
500
501 if (vf->efx) {
502 efx_device_detach_sync(vf->efx);
503 efx_net_stop(vf->efx->net_dev);
504
505 down_write(&vf->efx->filter_sem);
506 vf->efx->type->filter_table_remove(vf->efx);
507
508 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
509 if (rc) {
510 up_write(&vf->efx->filter_sem);
511 return rc;
512 }
513 }
514
515 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
516 if (rc)
517 return rc;
518
519 if (!is_zero_ether_addr(vf->mac)) {
520 rc = efx_ef10_vport_del_vf_mac(efx, vf->vport_id, vf->mac);
521 if (rc)
522 return rc;
523 }
524
525 if (!is_zero_ether_addr(mac)) {
526 rc = efx_ef10_vport_add_mac(efx, vf->vport_id, mac);
527 if (rc) {
528 eth_zero_addr(vf->mac);
529 goto fail;
530 }
531 if (vf->efx)
532 ether_addr_copy(vf->efx->net_dev->dev_addr, mac);
533 }
534
535 ether_addr_copy(vf->mac, mac);
536
537 rc = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
538 if (rc)
539 goto fail;
540
541 if (vf->efx) {
542 /* VF cannot use the vport_id that the PF created */
543 rc = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
544 if (rc) {
545 up_write(&vf->efx->filter_sem);
546 return rc;
547 }
548 vf->efx->type->filter_table_probe(vf->efx);
549 up_write(&vf->efx->filter_sem);
550 efx_net_open(vf->efx->net_dev);
551 netif_device_attach(vf->efx->net_dev);
552 }
553
554 return 0;
555
556 fail:
557 memset(vf->mac, 0, ETH_ALEN);
558 return rc;
559 }
560
561 int efx_ef10_sriov_set_vf_vlan(struct efx_nic *efx, int vf_i, u16 vlan,
562 u8 qos)
563 {
564 struct efx_ef10_nic_data *nic_data = efx->nic_data;
565 struct ef10_vf *vf;
566 u16 old_vlan, new_vlan;
567 int rc = 0, rc2 = 0;
568
569 if (vf_i >= efx->vf_count)
570 return -EINVAL;
571 if (qos != 0)
572 return -EINVAL;
573
574 vf = nic_data->vf + vf_i;
575
576 new_vlan = (vlan == 0) ? EFX_EF10_NO_VLAN : vlan;
577 if (new_vlan == vf->vlan)
578 return 0;
579
580 if (vf->efx) {
581 efx_device_detach_sync(vf->efx);
582 efx_net_stop(vf->efx->net_dev);
583
584 mutex_lock(&vf->efx->mac_lock);
585 down_write(&vf->efx->filter_sem);
586 vf->efx->type->filter_table_remove(vf->efx);
587
588 rc = efx_ef10_vadaptor_free(vf->efx, EVB_PORT_ID_ASSIGNED);
589 if (rc)
590 goto restore_filters;
591 }
592
593 if (vf->vport_assigned) {
594 rc = efx_ef10_evb_port_assign(efx, EVB_PORT_ID_NULL, vf_i);
595 if (rc) {
596 netif_warn(efx, drv, efx->net_dev,
597 "Failed to change vlan on VF %d.\n", vf_i);
598 netif_warn(efx, drv, efx->net_dev,
599 "This is likely because the VF is bound to a driver in a VM.\n");
600 netif_warn(efx, drv, efx->net_dev,
601 "Please unload the driver in the VM.\n");
602 goto restore_vadaptor;
603 }
604 vf->vport_assigned = 0;
605 }
606
607 if (!is_zero_ether_addr(vf->mac)) {
608 rc = efx_ef10_vport_del_mac(efx, vf->vport_id, vf->mac);
609 if (rc)
610 goto restore_evb_port;
611 }
612
613 if (vf->vport_id) {
614 rc = efx_ef10_vport_free(efx, vf->vport_id);
615 if (rc)
616 goto restore_mac;
617 vf->vport_id = 0;
618 }
619
620 /* Do the actual vlan change */
621 old_vlan = vf->vlan;
622 vf->vlan = new_vlan;
623
624 /* Restore everything in reverse order */
625 rc = efx_ef10_vport_alloc(efx, EVB_PORT_ID_ASSIGNED,
626 MC_CMD_VPORT_ALLOC_IN_VPORT_TYPE_NORMAL,
627 vf->vlan, &vf->vport_id);
628 if (rc)
629 goto reset_nic_up_write;
630
631 restore_mac:
632 if (!is_zero_ether_addr(vf->mac)) {
633 rc2 = efx_ef10_vport_add_mac(efx, vf->vport_id, vf->mac);
634 if (rc2) {
635 eth_zero_addr(vf->mac);
636 goto reset_nic_up_write;
637 }
638 }
639
640 restore_evb_port:
641 rc2 = efx_ef10_evb_port_assign(efx, vf->vport_id, vf_i);
642 if (rc2)
643 goto reset_nic_up_write;
644 else
645 vf->vport_assigned = 1;
646
647 restore_vadaptor:
648 if (vf->efx) {
649 rc2 = efx_ef10_vadaptor_alloc(vf->efx, EVB_PORT_ID_ASSIGNED);
650 if (rc2)
651 goto reset_nic_up_write;
652 }
653
654 restore_filters:
655 if (vf->efx) {
656 rc2 = vf->efx->type->filter_table_probe(vf->efx);
657 if (rc2)
658 goto reset_nic_up_write;
659
660 up_write(&vf->efx->filter_sem);
661 mutex_unlock(&vf->efx->mac_lock);
662
663 up_write(&vf->efx->filter_sem);
664
665 rc2 = efx_net_open(vf->efx->net_dev);
666 if (rc2)
667 goto reset_nic;
668
669 netif_device_attach(vf->efx->net_dev);
670 }
671 return rc;
672
673 reset_nic_up_write:
674 if (vf->efx) {
675 up_write(&vf->efx->filter_sem);
676 mutex_unlock(&vf->efx->mac_lock);
677 }
678 reset_nic:
679 if (vf->efx) {
680 netif_err(efx, drv, efx->net_dev,
681 "Failed to restore VF - scheduling reset.\n");
682 efx_schedule_reset(vf->efx, RESET_TYPE_DATAPATH);
683 } else {
684 netif_err(efx, drv, efx->net_dev,
685 "Failed to restore the VF and cannot reset the VF "
686 "- VF is not functional.\n");
687 netif_err(efx, drv, efx->net_dev,
688 "Please reload the driver attached to the VF.\n");
689 }
690
691 return rc ? rc : rc2;
692 }
693
694 int efx_ef10_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf_i,
695 bool spoofchk)
696 {
697 return spoofchk ? -EOPNOTSUPP : 0;
698 }
699
700 int efx_ef10_sriov_set_vf_link_state(struct efx_nic *efx, int vf_i,
701 int link_state)
702 {
703 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
704 struct efx_ef10_nic_data *nic_data = efx->nic_data;
705
706 BUILD_BUG_ON(IFLA_VF_LINK_STATE_AUTO !=
707 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_AUTO);
708 BUILD_BUG_ON(IFLA_VF_LINK_STATE_ENABLE !=
709 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_UP);
710 BUILD_BUG_ON(IFLA_VF_LINK_STATE_DISABLE !=
711 MC_CMD_LINK_STATE_MODE_IN_LINK_STATE_DOWN);
712 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
713 LINK_STATE_MODE_IN_FUNCTION_PF,
714 nic_data->pf_index,
715 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
716 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE, link_state);
717 return efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
718 NULL, 0, NULL); /* don't care what old mode was */
719 }
720
721 int efx_ef10_sriov_get_vf_config(struct efx_nic *efx, int vf_i,
722 struct ifla_vf_info *ivf)
723 {
724 MCDI_DECLARE_BUF(inbuf, MC_CMD_LINK_STATE_MODE_IN_LEN);
725 MCDI_DECLARE_BUF(outbuf, MC_CMD_LINK_STATE_MODE_OUT_LEN);
726
727 struct efx_ef10_nic_data *nic_data = efx->nic_data;
728 struct ef10_vf *vf;
729 size_t outlen;
730 int rc;
731
732 if (vf_i >= efx->vf_count)
733 return -EINVAL;
734
735 if (!nic_data->vf)
736 return -EOPNOTSUPP;
737
738 vf = nic_data->vf + vf_i;
739
740 ivf->vf = vf_i;
741 ivf->min_tx_rate = 0;
742 ivf->max_tx_rate = 0;
743 ether_addr_copy(ivf->mac, vf->mac);
744 ivf->vlan = (vf->vlan == EFX_EF10_NO_VLAN) ? 0 : vf->vlan;
745 ivf->qos = 0;
746
747 MCDI_POPULATE_DWORD_2(inbuf, LINK_STATE_MODE_IN_FUNCTION,
748 LINK_STATE_MODE_IN_FUNCTION_PF,
749 nic_data->pf_index,
750 LINK_STATE_MODE_IN_FUNCTION_VF, vf_i);
751 MCDI_SET_DWORD(inbuf, LINK_STATE_MODE_IN_NEW_MODE,
752 MC_CMD_LINK_STATE_MODE_IN_DO_NOT_CHANGE);
753 rc = efx_mcdi_rpc(efx, MC_CMD_LINK_STATE_MODE, inbuf, sizeof(inbuf),
754 outbuf, sizeof(outbuf), &outlen);
755 if (rc)
756 return rc;
757 if (outlen < MC_CMD_LINK_STATE_MODE_OUT_LEN)
758 return -EIO;
759 ivf->linkstate = MCDI_DWORD(outbuf, LINK_STATE_MODE_OUT_OLD_MODE);
760
761 return 0;
762 }
763
764 int efx_ef10_sriov_get_phys_port_id(struct efx_nic *efx,
765 struct netdev_phys_item_id *ppid)
766 {
767 struct efx_ef10_nic_data *nic_data = efx->nic_data;
768
769 if (!is_valid_ether_addr(nic_data->port_id))
770 return -EOPNOTSUPP;
771
772 ppid->id_len = ETH_ALEN;
773 memcpy(ppid->id, nic_data->port_id, ppid->id_len);
774
775 return 0;
776 }
CRIS linux kernel tree