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i40e: Change comment to reflect correct function name
[deliverable/linux.git] / drivers / net / ethernet / intel / i40e / i40e_virtchnl_pf.c
1 /*******************************************************************************
2 *
3 * Intel Ethernet Controller XL710 Family Linux Driver
4 * Copyright(c) 2013 - 2016 Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
17 *
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
20 *
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 ******************************************************************************/
26
27 #include "i40e.h"
28
29 /*********************notification routines***********************/
30
31 /**
32 * i40e_vc_vf_broadcast
33 * @pf: pointer to the PF structure
34 * @opcode: operation code
35 * @retval: return value
36 * @msg: pointer to the msg buffer
37 * @msglen: msg length
38 *
39 * send a message to all VFs on a given PF
40 **/
41 static void i40e_vc_vf_broadcast(struct i40e_pf *pf,
42 enum i40e_virtchnl_ops v_opcode,
43 i40e_status v_retval, u8 *msg,
44 u16 msglen)
45 {
46 struct i40e_hw *hw = &pf->hw;
47 struct i40e_vf *vf = pf->vf;
48 int i;
49
50 for (i = 0; i < pf->num_alloc_vfs; i++, vf++) {
51 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
52 /* Not all vfs are enabled so skip the ones that are not */
53 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states) &&
54 !test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
55 continue;
56
57 /* Ignore return value on purpose - a given VF may fail, but
58 * we need to keep going and send to all of them
59 */
60 i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
61 msg, msglen, NULL);
62 }
63 }
64
65 /**
66 * i40e_vc_notify_vf_link_state
67 * @vf: pointer to the VF structure
68 *
69 * send a link status message to a single VF
70 **/
71 static void i40e_vc_notify_vf_link_state(struct i40e_vf *vf)
72 {
73 struct i40e_virtchnl_pf_event pfe;
74 struct i40e_pf *pf = vf->pf;
75 struct i40e_hw *hw = &pf->hw;
76 struct i40e_link_status *ls = &pf->hw.phy.link_info;
77 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
78
79 pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
80 pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
81 if (vf->link_forced) {
82 pfe.event_data.link_event.link_status = vf->link_up;
83 pfe.event_data.link_event.link_speed =
84 (vf->link_up ? I40E_LINK_SPEED_40GB : 0);
85 } else {
86 pfe.event_data.link_event.link_status =
87 ls->link_info & I40E_AQ_LINK_UP;
88 pfe.event_data.link_event.link_speed = ls->link_speed;
89 }
90 i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
91 0, (u8 *)&pfe, sizeof(pfe), NULL);
92 }
93
94 /**
95 * i40e_vc_notify_link_state
96 * @pf: pointer to the PF structure
97 *
98 * send a link status message to all VFs on a given PF
99 **/
100 void i40e_vc_notify_link_state(struct i40e_pf *pf)
101 {
102 int i;
103
104 for (i = 0; i < pf->num_alloc_vfs; i++)
105 i40e_vc_notify_vf_link_state(&pf->vf[i]);
106 }
107
108 /**
109 * i40e_vc_notify_reset
110 * @pf: pointer to the PF structure
111 *
112 * indicate a pending reset to all VFs on a given PF
113 **/
114 void i40e_vc_notify_reset(struct i40e_pf *pf)
115 {
116 struct i40e_virtchnl_pf_event pfe;
117
118 pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
119 pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
120 i40e_vc_vf_broadcast(pf, I40E_VIRTCHNL_OP_EVENT, 0,
121 (u8 *)&pfe, sizeof(struct i40e_virtchnl_pf_event));
122 }
123
124 /**
125 * i40e_vc_notify_vf_reset
126 * @vf: pointer to the VF structure
127 *
128 * indicate a pending reset to the given VF
129 **/
130 void i40e_vc_notify_vf_reset(struct i40e_vf *vf)
131 {
132 struct i40e_virtchnl_pf_event pfe;
133 int abs_vf_id;
134
135 /* validate the request */
136 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
137 return;
138
139 /* verify if the VF is in either init or active before proceeding */
140 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states) &&
141 !test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
142 return;
143
144 abs_vf_id = vf->vf_id + vf->pf->hw.func_caps.vf_base_id;
145
146 pfe.event = I40E_VIRTCHNL_EVENT_RESET_IMPENDING;
147 pfe.severity = I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM;
148 i40e_aq_send_msg_to_vf(&vf->pf->hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
149 0, (u8 *)&pfe,
150 sizeof(struct i40e_virtchnl_pf_event), NULL);
151 }
152 /***********************misc routines*****************************/
153
154 /**
155 * i40e_vc_disable_vf
156 * @pf: pointer to the PF info
157 * @vf: pointer to the VF info
158 *
159 * Disable the VF through a SW reset
160 **/
161 static inline void i40e_vc_disable_vf(struct i40e_pf *pf, struct i40e_vf *vf)
162 {
163 i40e_vc_notify_vf_reset(vf);
164 i40e_reset_vf(vf, false);
165 }
166
167 /**
168 * i40e_vc_isvalid_vsi_id
169 * @vf: pointer to the VF info
170 * @vsi_id: VF relative VSI id
171 *
172 * check for the valid VSI id
173 **/
174 static inline bool i40e_vc_isvalid_vsi_id(struct i40e_vf *vf, u16 vsi_id)
175 {
176 struct i40e_pf *pf = vf->pf;
177 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
178
179 return (vsi && (vsi->vf_id == vf->vf_id));
180 }
181
182 /**
183 * i40e_vc_isvalid_queue_id
184 * @vf: pointer to the VF info
185 * @vsi_id: vsi id
186 * @qid: vsi relative queue id
187 *
188 * check for the valid queue id
189 **/
190 static inline bool i40e_vc_isvalid_queue_id(struct i40e_vf *vf, u16 vsi_id,
191 u8 qid)
192 {
193 struct i40e_pf *pf = vf->pf;
194 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
195
196 return (vsi && (qid < vsi->alloc_queue_pairs));
197 }
198
199 /**
200 * i40e_vc_isvalid_vector_id
201 * @vf: pointer to the VF info
202 * @vector_id: VF relative vector id
203 *
204 * check for the valid vector id
205 **/
206 static inline bool i40e_vc_isvalid_vector_id(struct i40e_vf *vf, u8 vector_id)
207 {
208 struct i40e_pf *pf = vf->pf;
209
210 return vector_id < pf->hw.func_caps.num_msix_vectors_vf;
211 }
212
213 /***********************vf resource mgmt routines*****************/
214
215 /**
216 * i40e_vc_get_pf_queue_id
217 * @vf: pointer to the VF info
218 * @vsi_id: id of VSI as provided by the FW
219 * @vsi_queue_id: vsi relative queue id
220 *
221 * return PF relative queue id
222 **/
223 static u16 i40e_vc_get_pf_queue_id(struct i40e_vf *vf, u16 vsi_id,
224 u8 vsi_queue_id)
225 {
226 struct i40e_pf *pf = vf->pf;
227 struct i40e_vsi *vsi = i40e_find_vsi_from_id(pf, vsi_id);
228 u16 pf_queue_id = I40E_QUEUE_END_OF_LIST;
229
230 if (!vsi)
231 return pf_queue_id;
232
233 if (le16_to_cpu(vsi->info.mapping_flags) &
234 I40E_AQ_VSI_QUE_MAP_NONCONTIG)
235 pf_queue_id =
236 le16_to_cpu(vsi->info.queue_mapping[vsi_queue_id]);
237 else
238 pf_queue_id = le16_to_cpu(vsi->info.queue_mapping[0]) +
239 vsi_queue_id;
240
241 return pf_queue_id;
242 }
243
244 /**
245 * i40e_config_irq_link_list
246 * @vf: pointer to the VF info
247 * @vsi_id: id of VSI as given by the FW
248 * @vecmap: irq map info
249 *
250 * configure irq link list from the map
251 **/
252 static void i40e_config_irq_link_list(struct i40e_vf *vf, u16 vsi_id,
253 struct i40e_virtchnl_vector_map *vecmap)
254 {
255 unsigned long linklistmap = 0, tempmap;
256 struct i40e_pf *pf = vf->pf;
257 struct i40e_hw *hw = &pf->hw;
258 u16 vsi_queue_id, pf_queue_id;
259 enum i40e_queue_type qtype;
260 u16 next_q, vector_id;
261 u32 reg, reg_idx;
262 u16 itr_idx = 0;
263
264 vector_id = vecmap->vector_id;
265 /* setup the head */
266 if (0 == vector_id)
267 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
268 else
269 reg_idx = I40E_VPINT_LNKLSTN(
270 ((pf->hw.func_caps.num_msix_vectors_vf - 1) * vf->vf_id) +
271 (vector_id - 1));
272
273 if (vecmap->rxq_map == 0 && vecmap->txq_map == 0) {
274 /* Special case - No queues mapped on this vector */
275 wr32(hw, reg_idx, I40E_VPINT_LNKLST0_FIRSTQ_INDX_MASK);
276 goto irq_list_done;
277 }
278 tempmap = vecmap->rxq_map;
279 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
280 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
281 vsi_queue_id));
282 }
283
284 tempmap = vecmap->txq_map;
285 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
286 linklistmap |= (BIT(I40E_VIRTCHNL_SUPPORTED_QTYPES *
287 vsi_queue_id + 1));
288 }
289
290 next_q = find_first_bit(&linklistmap,
291 (I40E_MAX_VSI_QP *
292 I40E_VIRTCHNL_SUPPORTED_QTYPES));
293 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
294 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
295 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
296 reg = ((qtype << I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT) | pf_queue_id);
297
298 wr32(hw, reg_idx, reg);
299
300 while (next_q < (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
301 switch (qtype) {
302 case I40E_QUEUE_TYPE_RX:
303 reg_idx = I40E_QINT_RQCTL(pf_queue_id);
304 itr_idx = vecmap->rxitr_idx;
305 break;
306 case I40E_QUEUE_TYPE_TX:
307 reg_idx = I40E_QINT_TQCTL(pf_queue_id);
308 itr_idx = vecmap->txitr_idx;
309 break;
310 default:
311 break;
312 }
313
314 next_q = find_next_bit(&linklistmap,
315 (I40E_MAX_VSI_QP *
316 I40E_VIRTCHNL_SUPPORTED_QTYPES),
317 next_q + 1);
318 if (next_q <
319 (I40E_MAX_VSI_QP * I40E_VIRTCHNL_SUPPORTED_QTYPES)) {
320 vsi_queue_id = next_q / I40E_VIRTCHNL_SUPPORTED_QTYPES;
321 qtype = next_q % I40E_VIRTCHNL_SUPPORTED_QTYPES;
322 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id,
323 vsi_queue_id);
324 } else {
325 pf_queue_id = I40E_QUEUE_END_OF_LIST;
326 qtype = 0;
327 }
328
329 /* format for the RQCTL & TQCTL regs is same */
330 reg = (vector_id) |
331 (qtype << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT) |
332 (pf_queue_id << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
333 BIT(I40E_QINT_RQCTL_CAUSE_ENA_SHIFT) |
334 (itr_idx << I40E_QINT_RQCTL_ITR_INDX_SHIFT);
335 wr32(hw, reg_idx, reg);
336 }
337
338 /* if the vf is running in polling mode and using interrupt zero,
339 * need to disable auto-mask on enabling zero interrupt for VFs.
340 */
341 if ((vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING) &&
342 (vector_id == 0)) {
343 reg = rd32(hw, I40E_GLINT_CTL);
344 if (!(reg & I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK)) {
345 reg |= I40E_GLINT_CTL_DIS_AUTOMASK_VF0_MASK;
346 wr32(hw, I40E_GLINT_CTL, reg);
347 }
348 }
349
350 irq_list_done:
351 i40e_flush(hw);
352 }
353
354 /**
355 * i40e_release_iwarp_qvlist
356 * @vf: pointer to the VF.
357 *
358 **/
359 static void i40e_release_iwarp_qvlist(struct i40e_vf *vf)
360 {
361 struct i40e_pf *pf = vf->pf;
362 struct i40e_virtchnl_iwarp_qvlist_info *qvlist_info = vf->qvlist_info;
363 u32 msix_vf;
364 u32 i;
365
366 if (!vf->qvlist_info)
367 return;
368
369 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
370 for (i = 0; i < qvlist_info->num_vectors; i++) {
371 struct i40e_virtchnl_iwarp_qv_info *qv_info;
372 u32 next_q_index, next_q_type;
373 struct i40e_hw *hw = &pf->hw;
374 u32 v_idx, reg_idx, reg;
375
376 qv_info = &qvlist_info->qv_info[i];
377 if (!qv_info)
378 continue;
379 v_idx = qv_info->v_idx;
380 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
381 /* Figure out the queue after CEQ and make that the
382 * first queue.
383 */
384 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
385 reg = rd32(hw, I40E_VPINT_CEQCTL(reg_idx));
386 next_q_index = (reg & I40E_VPINT_CEQCTL_NEXTQ_INDX_MASK)
387 >> I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT;
388 next_q_type = (reg & I40E_VPINT_CEQCTL_NEXTQ_TYPE_MASK)
389 >> I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT;
390
391 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
392 reg = (next_q_index &
393 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
394 (next_q_type <<
395 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
396
397 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
398 }
399 }
400 kfree(vf->qvlist_info);
401 vf->qvlist_info = NULL;
402 }
403
404 /**
405 * i40e_config_iwarp_qvlist
406 * @vf: pointer to the VF info
407 * @qvlist_info: queue and vector list
408 *
409 * Return 0 on success or < 0 on error
410 **/
411 static int i40e_config_iwarp_qvlist(struct i40e_vf *vf,
412 struct i40e_virtchnl_iwarp_qvlist_info *qvlist_info)
413 {
414 struct i40e_pf *pf = vf->pf;
415 struct i40e_hw *hw = &pf->hw;
416 struct i40e_virtchnl_iwarp_qv_info *qv_info;
417 u32 v_idx, i, reg_idx, reg;
418 u32 next_q_idx, next_q_type;
419 u32 msix_vf, size;
420
421 size = sizeof(struct i40e_virtchnl_iwarp_qvlist_info) +
422 (sizeof(struct i40e_virtchnl_iwarp_qv_info) *
423 (qvlist_info->num_vectors - 1));
424 vf->qvlist_info = kzalloc(size, GFP_KERNEL);
425 vf->qvlist_info->num_vectors = qvlist_info->num_vectors;
426
427 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
428 for (i = 0; i < qvlist_info->num_vectors; i++) {
429 qv_info = &qvlist_info->qv_info[i];
430 if (!qv_info)
431 continue;
432 v_idx = qv_info->v_idx;
433
434 /* Validate vector id belongs to this vf */
435 if (!i40e_vc_isvalid_vector_id(vf, v_idx))
436 goto err;
437
438 vf->qvlist_info->qv_info[i] = *qv_info;
439
440 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
441 /* We might be sharing the interrupt, so get the first queue
442 * index and type, push it down the list by adding the new
443 * queue on top. Also link it with the new queue in CEQCTL.
444 */
445 reg = rd32(hw, I40E_VPINT_LNKLSTN(reg_idx));
446 next_q_idx = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) >>
447 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_SHIFT);
448 next_q_type = ((reg & I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK) >>
449 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
450
451 if (qv_info->ceq_idx != I40E_QUEUE_INVALID_IDX) {
452 reg_idx = (msix_vf - 1) * vf->vf_id + qv_info->ceq_idx;
453 reg = (I40E_VPINT_CEQCTL_CAUSE_ENA_MASK |
454 (v_idx << I40E_VPINT_CEQCTL_MSIX_INDX_SHIFT) |
455 (qv_info->itr_idx << I40E_VPINT_CEQCTL_ITR_INDX_SHIFT) |
456 (next_q_type << I40E_VPINT_CEQCTL_NEXTQ_TYPE_SHIFT) |
457 (next_q_idx << I40E_VPINT_CEQCTL_NEXTQ_INDX_SHIFT));
458 wr32(hw, I40E_VPINT_CEQCTL(reg_idx), reg);
459
460 reg_idx = ((msix_vf - 1) * vf->vf_id) + (v_idx - 1);
461 reg = (qv_info->ceq_idx &
462 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK) |
463 (I40E_QUEUE_TYPE_PE_CEQ <<
464 I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_SHIFT);
465 wr32(hw, I40E_VPINT_LNKLSTN(reg_idx), reg);
466 }
467
468 if (qv_info->aeq_idx != I40E_QUEUE_INVALID_IDX) {
469 reg = (I40E_VPINT_AEQCTL_CAUSE_ENA_MASK |
470 (v_idx << I40E_VPINT_AEQCTL_MSIX_INDX_SHIFT) |
471 (qv_info->itr_idx << I40E_VPINT_AEQCTL_ITR_INDX_SHIFT));
472
473 wr32(hw, I40E_VPINT_AEQCTL(vf->vf_id), reg);
474 }
475 }
476
477 return 0;
478 err:
479 kfree(vf->qvlist_info);
480 vf->qvlist_info = NULL;
481 return -EINVAL;
482 }
483
484 /**
485 * i40e_config_vsi_tx_queue
486 * @vf: pointer to the VF info
487 * @vsi_id: id of VSI as provided by the FW
488 * @vsi_queue_id: vsi relative queue index
489 * @info: config. info
490 *
491 * configure tx queue
492 **/
493 static int i40e_config_vsi_tx_queue(struct i40e_vf *vf, u16 vsi_id,
494 u16 vsi_queue_id,
495 struct i40e_virtchnl_txq_info *info)
496 {
497 struct i40e_pf *pf = vf->pf;
498 struct i40e_hw *hw = &pf->hw;
499 struct i40e_hmc_obj_txq tx_ctx;
500 struct i40e_vsi *vsi;
501 u16 pf_queue_id;
502 u32 qtx_ctl;
503 int ret = 0;
504
505 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
506 vsi = i40e_find_vsi_from_id(pf, vsi_id);
507
508 /* clear the context structure first */
509 memset(&tx_ctx, 0, sizeof(struct i40e_hmc_obj_txq));
510
511 /* only set the required fields */
512 tx_ctx.base = info->dma_ring_addr / 128;
513 tx_ctx.qlen = info->ring_len;
514 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[0]);
515 tx_ctx.rdylist_act = 0;
516 tx_ctx.head_wb_ena = info->headwb_enabled;
517 tx_ctx.head_wb_addr = info->dma_headwb_addr;
518
519 /* clear the context in the HMC */
520 ret = i40e_clear_lan_tx_queue_context(hw, pf_queue_id);
521 if (ret) {
522 dev_err(&pf->pdev->dev,
523 "Failed to clear VF LAN Tx queue context %d, error: %d\n",
524 pf_queue_id, ret);
525 ret = -ENOENT;
526 goto error_context;
527 }
528
529 /* set the context in the HMC */
530 ret = i40e_set_lan_tx_queue_context(hw, pf_queue_id, &tx_ctx);
531 if (ret) {
532 dev_err(&pf->pdev->dev,
533 "Failed to set VF LAN Tx queue context %d error: %d\n",
534 pf_queue_id, ret);
535 ret = -ENOENT;
536 goto error_context;
537 }
538
539 /* associate this queue with the PCI VF function */
540 qtx_ctl = I40E_QTX_CTL_VF_QUEUE;
541 qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT)
542 & I40E_QTX_CTL_PF_INDX_MASK);
543 qtx_ctl |= (((vf->vf_id + hw->func_caps.vf_base_id)
544 << I40E_QTX_CTL_VFVM_INDX_SHIFT)
545 & I40E_QTX_CTL_VFVM_INDX_MASK);
546 wr32(hw, I40E_QTX_CTL(pf_queue_id), qtx_ctl);
547 i40e_flush(hw);
548
549 error_context:
550 return ret;
551 }
552
553 /**
554 * i40e_config_vsi_rx_queue
555 * @vf: pointer to the VF info
556 * @vsi_id: id of VSI as provided by the FW
557 * @vsi_queue_id: vsi relative queue index
558 * @info: config. info
559 *
560 * configure rx queue
561 **/
562 static int i40e_config_vsi_rx_queue(struct i40e_vf *vf, u16 vsi_id,
563 u16 vsi_queue_id,
564 struct i40e_virtchnl_rxq_info *info)
565 {
566 struct i40e_pf *pf = vf->pf;
567 struct i40e_hw *hw = &pf->hw;
568 struct i40e_hmc_obj_rxq rx_ctx;
569 u16 pf_queue_id;
570 int ret = 0;
571
572 pf_queue_id = i40e_vc_get_pf_queue_id(vf, vsi_id, vsi_queue_id);
573
574 /* clear the context structure first */
575 memset(&rx_ctx, 0, sizeof(struct i40e_hmc_obj_rxq));
576
577 /* only set the required fields */
578 rx_ctx.base = info->dma_ring_addr / 128;
579 rx_ctx.qlen = info->ring_len;
580
581 if (info->splithdr_enabled) {
582 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2 |
583 I40E_RX_SPLIT_IP |
584 I40E_RX_SPLIT_TCP_UDP |
585 I40E_RX_SPLIT_SCTP;
586 /* header length validation */
587 if (info->hdr_size > ((2 * 1024) - 64)) {
588 ret = -EINVAL;
589 goto error_param;
590 }
591 rx_ctx.hbuff = info->hdr_size >> I40E_RXQ_CTX_HBUFF_SHIFT;
592
593 /* set splitalways mode 10b */
594 rx_ctx.dtype = I40E_RX_DTYPE_HEADER_SPLIT;
595 }
596
597 /* databuffer length validation */
598 if (info->databuffer_size > ((16 * 1024) - 128)) {
599 ret = -EINVAL;
600 goto error_param;
601 }
602 rx_ctx.dbuff = info->databuffer_size >> I40E_RXQ_CTX_DBUFF_SHIFT;
603
604 /* max pkt. length validation */
605 if (info->max_pkt_size >= (16 * 1024) || info->max_pkt_size < 64) {
606 ret = -EINVAL;
607 goto error_param;
608 }
609 rx_ctx.rxmax = info->max_pkt_size;
610
611 /* enable 32bytes desc always */
612 rx_ctx.dsize = 1;
613
614 /* default values */
615 rx_ctx.lrxqthresh = 2;
616 rx_ctx.crcstrip = 1;
617 rx_ctx.prefena = 1;
618 rx_ctx.l2tsel = 1;
619
620 /* clear the context in the HMC */
621 ret = i40e_clear_lan_rx_queue_context(hw, pf_queue_id);
622 if (ret) {
623 dev_err(&pf->pdev->dev,
624 "Failed to clear VF LAN Rx queue context %d, error: %d\n",
625 pf_queue_id, ret);
626 ret = -ENOENT;
627 goto error_param;
628 }
629
630 /* set the context in the HMC */
631 ret = i40e_set_lan_rx_queue_context(hw, pf_queue_id, &rx_ctx);
632 if (ret) {
633 dev_err(&pf->pdev->dev,
634 "Failed to set VF LAN Rx queue context %d error: %d\n",
635 pf_queue_id, ret);
636 ret = -ENOENT;
637 goto error_param;
638 }
639
640 error_param:
641 return ret;
642 }
643
644 /**
645 * i40e_alloc_vsi_res
646 * @vf: pointer to the VF info
647 * @type: type of VSI to allocate
648 *
649 * alloc VF vsi context & resources
650 **/
651 static int i40e_alloc_vsi_res(struct i40e_vf *vf, enum i40e_vsi_type type)
652 {
653 struct i40e_mac_filter *f = NULL;
654 struct i40e_pf *pf = vf->pf;
655 struct i40e_vsi *vsi;
656 int ret = 0;
657
658 vsi = i40e_vsi_setup(pf, type, pf->vsi[pf->lan_vsi]->seid, vf->vf_id);
659
660 if (!vsi) {
661 dev_err(&pf->pdev->dev,
662 "add vsi failed for VF %d, aq_err %d\n",
663 vf->vf_id, pf->hw.aq.asq_last_status);
664 ret = -ENOENT;
665 goto error_alloc_vsi_res;
666 }
667 if (type == I40E_VSI_SRIOV) {
668 u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
669
670 vf->lan_vsi_idx = vsi->idx;
671 vf->lan_vsi_id = vsi->id;
672 /* If the port VLAN has been configured and then the
673 * VF driver was removed then the VSI port VLAN
674 * configuration was destroyed. Check if there is
675 * a port VLAN and restore the VSI configuration if
676 * needed.
677 */
678 if (vf->port_vlan_id)
679 i40e_vsi_add_pvid(vsi, vf->port_vlan_id);
680
681 spin_lock_bh(&vsi->mac_filter_list_lock);
682 if (is_valid_ether_addr(vf->default_lan_addr.addr)) {
683 f = i40e_add_filter(vsi, vf->default_lan_addr.addr,
684 vf->port_vlan_id ? vf->port_vlan_id : -1,
685 true, false);
686 if (!f)
687 dev_info(&pf->pdev->dev,
688 "Could not add MAC filter %pM for VF %d\n",
689 vf->default_lan_addr.addr, vf->vf_id);
690 }
691 f = i40e_add_filter(vsi, brdcast,
692 vf->port_vlan_id ? vf->port_vlan_id : -1,
693 true, false);
694 if (!f)
695 dev_info(&pf->pdev->dev,
696 "Could not allocate VF broadcast filter\n");
697 spin_unlock_bh(&vsi->mac_filter_list_lock);
698 }
699
700 /* program mac filter */
701 ret = i40e_sync_vsi_filters(vsi);
702 if (ret)
703 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
704
705 /* Set VF bandwidth if specified */
706 if (vf->tx_rate) {
707 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
708 vf->tx_rate / 50, 0, NULL);
709 if (ret)
710 dev_err(&pf->pdev->dev, "Unable to set tx rate, VF %d, error code %d.\n",
711 vf->vf_id, ret);
712 }
713
714 error_alloc_vsi_res:
715 return ret;
716 }
717
718 /**
719 * i40e_enable_vf_mappings
720 * @vf: pointer to the VF info
721 *
722 * enable VF mappings
723 **/
724 static void i40e_enable_vf_mappings(struct i40e_vf *vf)
725 {
726 struct i40e_pf *pf = vf->pf;
727 struct i40e_hw *hw = &pf->hw;
728 u32 reg, total_queue_pairs = 0;
729 int j;
730
731 /* Tell the hardware we're using noncontiguous mapping. HW requires
732 * that VF queues be mapped using this method, even when they are
733 * contiguous in real life
734 */
735 i40e_write_rx_ctl(hw, I40E_VSILAN_QBASE(vf->lan_vsi_id),
736 I40E_VSILAN_QBASE_VSIQTABLE_ENA_MASK);
737
738 /* enable VF vplan_qtable mappings */
739 reg = I40E_VPLAN_MAPENA_TXRX_ENA_MASK;
740 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), reg);
741
742 /* map PF queues to VF queues */
743 for (j = 0; j < pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs; j++) {
744 u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id, j);
745
746 reg = (qid & I40E_VPLAN_QTABLE_QINDEX_MASK);
747 wr32(hw, I40E_VPLAN_QTABLE(total_queue_pairs, vf->vf_id), reg);
748 total_queue_pairs++;
749 }
750
751 /* map PF queues to VSI */
752 for (j = 0; j < 7; j++) {
753 if (j * 2 >= pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs) {
754 reg = 0x07FF07FF; /* unused */
755 } else {
756 u16 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
757 j * 2);
758 reg = qid;
759 qid = i40e_vc_get_pf_queue_id(vf, vf->lan_vsi_id,
760 (j * 2) + 1);
761 reg |= qid << 16;
762 }
763 i40e_write_rx_ctl(hw, I40E_VSILAN_QTABLE(j, vf->lan_vsi_id),
764 reg);
765 }
766
767 i40e_flush(hw);
768 }
769
770 /**
771 * i40e_disable_vf_mappings
772 * @vf: pointer to the VF info
773 *
774 * disable VF mappings
775 **/
776 static void i40e_disable_vf_mappings(struct i40e_vf *vf)
777 {
778 struct i40e_pf *pf = vf->pf;
779 struct i40e_hw *hw = &pf->hw;
780 int i;
781
782 /* disable qp mappings */
783 wr32(hw, I40E_VPLAN_MAPENA(vf->vf_id), 0);
784 for (i = 0; i < I40E_MAX_VSI_QP; i++)
785 wr32(hw, I40E_VPLAN_QTABLE(i, vf->vf_id),
786 I40E_QUEUE_END_OF_LIST);
787 i40e_flush(hw);
788 }
789
790 /**
791 * i40e_free_vf_res
792 * @vf: pointer to the VF info
793 *
794 * free VF resources
795 **/
796 static void i40e_free_vf_res(struct i40e_vf *vf)
797 {
798 struct i40e_pf *pf = vf->pf;
799 struct i40e_hw *hw = &pf->hw;
800 u32 reg_idx, reg;
801 int i, msix_vf;
802
803 /* free vsi & disconnect it from the parent uplink */
804 if (vf->lan_vsi_idx) {
805 i40e_vsi_release(pf->vsi[vf->lan_vsi_idx]);
806 vf->lan_vsi_idx = 0;
807 vf->lan_vsi_id = 0;
808 }
809 msix_vf = pf->hw.func_caps.num_msix_vectors_vf;
810
811 /* disable interrupts so the VF starts in a known state */
812 for (i = 0; i < msix_vf; i++) {
813 /* format is same for both registers */
814 if (0 == i)
815 reg_idx = I40E_VFINT_DYN_CTL0(vf->vf_id);
816 else
817 reg_idx = I40E_VFINT_DYN_CTLN(((msix_vf - 1) *
818 (vf->vf_id))
819 + (i - 1));
820 wr32(hw, reg_idx, I40E_VFINT_DYN_CTLN_CLEARPBA_MASK);
821 i40e_flush(hw);
822 }
823
824 /* clear the irq settings */
825 for (i = 0; i < msix_vf; i++) {
826 /* format is same for both registers */
827 if (0 == i)
828 reg_idx = I40E_VPINT_LNKLST0(vf->vf_id);
829 else
830 reg_idx = I40E_VPINT_LNKLSTN(((msix_vf - 1) *
831 (vf->vf_id))
832 + (i - 1));
833 reg = (I40E_VPINT_LNKLSTN_FIRSTQ_TYPE_MASK |
834 I40E_VPINT_LNKLSTN_FIRSTQ_INDX_MASK);
835 wr32(hw, reg_idx, reg);
836 i40e_flush(hw);
837 }
838 /* reset some of the state varibles keeping
839 * track of the resources
840 */
841 vf->num_queue_pairs = 0;
842 vf->vf_states = 0;
843 clear_bit(I40E_VF_STAT_INIT, &vf->vf_states);
844 }
845
846 /**
847 * i40e_alloc_vf_res
848 * @vf: pointer to the VF info
849 *
850 * allocate VF resources
851 **/
852 static int i40e_alloc_vf_res(struct i40e_vf *vf)
853 {
854 struct i40e_pf *pf = vf->pf;
855 int total_queue_pairs = 0;
856 int ret;
857
858 /* allocate hw vsi context & associated resources */
859 ret = i40e_alloc_vsi_res(vf, I40E_VSI_SRIOV);
860 if (ret)
861 goto error_alloc;
862 total_queue_pairs += pf->vsi[vf->lan_vsi_idx]->alloc_queue_pairs;
863 set_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
864
865 /* store the total qps number for the runtime
866 * VF req validation
867 */
868 vf->num_queue_pairs = total_queue_pairs;
869
870 /* VF is now completely initialized */
871 set_bit(I40E_VF_STAT_INIT, &vf->vf_states);
872
873 error_alloc:
874 if (ret)
875 i40e_free_vf_res(vf);
876
877 return ret;
878 }
879
880 #define VF_DEVICE_STATUS 0xAA
881 #define VF_TRANS_PENDING_MASK 0x20
882 /**
883 * i40e_quiesce_vf_pci
884 * @vf: pointer to the VF structure
885 *
886 * Wait for VF PCI transactions to be cleared after reset. Returns -EIO
887 * if the transactions never clear.
888 **/
889 static int i40e_quiesce_vf_pci(struct i40e_vf *vf)
890 {
891 struct i40e_pf *pf = vf->pf;
892 struct i40e_hw *hw = &pf->hw;
893 int vf_abs_id, i;
894 u32 reg;
895
896 vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id;
897
898 wr32(hw, I40E_PF_PCI_CIAA,
899 VF_DEVICE_STATUS | (vf_abs_id << I40E_PF_PCI_CIAA_VF_NUM_SHIFT));
900 for (i = 0; i < 100; i++) {
901 reg = rd32(hw, I40E_PF_PCI_CIAD);
902 if ((reg & VF_TRANS_PENDING_MASK) == 0)
903 return 0;
904 udelay(1);
905 }
906 return -EIO;
907 }
908
909 /**
910 * i40e_reset_vf
911 * @vf: pointer to the VF structure
912 * @flr: VFLR was issued or not
913 *
914 * reset the VF
915 **/
916 void i40e_reset_vf(struct i40e_vf *vf, bool flr)
917 {
918 struct i40e_pf *pf = vf->pf;
919 struct i40e_hw *hw = &pf->hw;
920 u32 reg, reg_idx, bit_idx;
921 bool rsd = false;
922 int i;
923
924 if (test_and_set_bit(__I40E_VF_DISABLE, &pf->state))
925 return;
926
927 /* warn the VF */
928 clear_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
929
930 /* In the case of a VFLR, the HW has already reset the VF and we
931 * just need to clean up, so don't hit the VFRTRIG register.
932 */
933 if (!flr) {
934 /* reset VF using VPGEN_VFRTRIG reg */
935 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
936 reg |= I40E_VPGEN_VFRTRIG_VFSWR_MASK;
937 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
938 i40e_flush(hw);
939 }
940
941 if (i40e_quiesce_vf_pci(vf))
942 dev_err(&pf->pdev->dev, "VF %d PCI transactions stuck\n",
943 vf->vf_id);
944
945 /* poll VPGEN_VFRSTAT reg to make sure
946 * that reset is complete
947 */
948 for (i = 0; i < 10; i++) {
949 /* VF reset requires driver to first reset the VF and then
950 * poll the status register to make sure that the reset
951 * completed successfully. Due to internal HW FIFO flushes,
952 * we must wait 10ms before the register will be valid.
953 */
954 usleep_range(10000, 20000);
955 reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id));
956 if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) {
957 rsd = true;
958 break;
959 }
960 }
961
962 if (flr)
963 usleep_range(10000, 20000);
964
965 if (!rsd)
966 dev_err(&pf->pdev->dev, "VF reset check timeout on VF %d\n",
967 vf->vf_id);
968 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_COMPLETED);
969 /* clear the reset bit in the VPGEN_VFRTRIG reg */
970 reg = rd32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id));
971 reg &= ~I40E_VPGEN_VFRTRIG_VFSWR_MASK;
972 wr32(hw, I40E_VPGEN_VFRTRIG(vf->vf_id), reg);
973
974 /* On initial reset, we won't have any queues */
975 if (vf->lan_vsi_idx == 0)
976 goto complete_reset;
977
978 i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false);
979 complete_reset:
980 /* reallocate VF resources to reset the VSI state */
981 i40e_free_vf_res(vf);
982 if (!i40e_alloc_vf_res(vf)) {
983 int abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
984 i40e_enable_vf_mappings(vf);
985 set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
986 clear_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
987 i40e_notify_client_of_vf_reset(pf, abs_vf_id);
988 }
989 /* tell the VF the reset is done */
990 wr32(hw, I40E_VFGEN_RSTAT1(vf->vf_id), I40E_VFR_VFACTIVE);
991
992 /* clear the VFLR bit in GLGEN_VFLRSTAT */
993 reg_idx = (hw->func_caps.vf_base_id + vf->vf_id) / 32;
994 bit_idx = (hw->func_caps.vf_base_id + vf->vf_id) % 32;
995 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
996 i40e_flush(hw);
997 clear_bit(__I40E_VF_DISABLE, &pf->state);
998 }
999
1000 /**
1001 * i40e_free_vfs
1002 * @pf: pointer to the PF structure
1003 *
1004 * free VF resources
1005 **/
1006 void i40e_free_vfs(struct i40e_pf *pf)
1007 {
1008 struct i40e_hw *hw = &pf->hw;
1009 u32 reg_idx, bit_idx;
1010 int i, tmp, vf_id;
1011
1012 if (!pf->vf)
1013 return;
1014 while (test_and_set_bit(__I40E_VF_DISABLE, &pf->state))
1015 usleep_range(1000, 2000);
1016
1017 i40e_notify_client_of_vf_enable(pf, 0);
1018 for (i = 0; i < pf->num_alloc_vfs; i++)
1019 if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
1020 i40e_vsi_control_rings(pf->vsi[pf->vf[i].lan_vsi_idx],
1021 false);
1022
1023 /* Disable IOV before freeing resources. This lets any VF drivers
1024 * running in the host get themselves cleaned up before we yank
1025 * the carpet out from underneath their feet.
1026 */
1027 if (!pci_vfs_assigned(pf->pdev))
1028 pci_disable_sriov(pf->pdev);
1029 else
1030 dev_warn(&pf->pdev->dev, "VFs are assigned - not disabling SR-IOV\n");
1031
1032 msleep(20); /* let any messages in transit get finished up */
1033
1034 /* free up VF resources */
1035 tmp = pf->num_alloc_vfs;
1036 pf->num_alloc_vfs = 0;
1037 for (i = 0; i < tmp; i++) {
1038 if (test_bit(I40E_VF_STAT_INIT, &pf->vf[i].vf_states))
1039 i40e_free_vf_res(&pf->vf[i]);
1040 /* disable qp mappings */
1041 i40e_disable_vf_mappings(&pf->vf[i]);
1042 }
1043
1044 kfree(pf->vf);
1045 pf->vf = NULL;
1046
1047 /* This check is for when the driver is unloaded while VFs are
1048 * assigned. Setting the number of VFs to 0 through sysfs is caught
1049 * before this function ever gets called.
1050 */
1051 if (!pci_vfs_assigned(pf->pdev)) {
1052 /* Acknowledge VFLR for all VFS. Without this, VFs will fail to
1053 * work correctly when SR-IOV gets re-enabled.
1054 */
1055 for (vf_id = 0; vf_id < tmp; vf_id++) {
1056 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
1057 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
1058 wr32(hw, I40E_GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx));
1059 }
1060 }
1061 clear_bit(__I40E_VF_DISABLE, &pf->state);
1062 }
1063
1064 #ifdef CONFIG_PCI_IOV
1065 /**
1066 * i40e_alloc_vfs
1067 * @pf: pointer to the PF structure
1068 * @num_alloc_vfs: number of VFs to allocate
1069 *
1070 * allocate VF resources
1071 **/
1072 int i40e_alloc_vfs(struct i40e_pf *pf, u16 num_alloc_vfs)
1073 {
1074 struct i40e_vf *vfs;
1075 int i, ret = 0;
1076
1077 /* Disable interrupt 0 so we don't try to handle the VFLR. */
1078 i40e_irq_dynamic_disable_icr0(pf);
1079
1080 /* Check to see if we're just allocating resources for extant VFs */
1081 if (pci_num_vf(pf->pdev) != num_alloc_vfs) {
1082 ret = pci_enable_sriov(pf->pdev, num_alloc_vfs);
1083 if (ret) {
1084 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1085 pf->num_alloc_vfs = 0;
1086 goto err_iov;
1087 }
1088 }
1089 i40e_notify_client_of_vf_enable(pf, num_alloc_vfs);
1090 /* allocate memory */
1091 vfs = kcalloc(num_alloc_vfs, sizeof(struct i40e_vf), GFP_KERNEL);
1092 if (!vfs) {
1093 ret = -ENOMEM;
1094 goto err_alloc;
1095 }
1096 pf->vf = vfs;
1097
1098 /* apply default profile */
1099 for (i = 0; i < num_alloc_vfs; i++) {
1100 vfs[i].pf = pf;
1101 vfs[i].parent_type = I40E_SWITCH_ELEMENT_TYPE_VEB;
1102 vfs[i].vf_id = i;
1103
1104 /* assign default capabilities */
1105 set_bit(I40E_VIRTCHNL_VF_CAP_L2, &vfs[i].vf_caps);
1106 vfs[i].spoofchk = true;
1107 /* VF resources get allocated during reset */
1108 i40e_reset_vf(&vfs[i], false);
1109
1110 }
1111 pf->num_alloc_vfs = num_alloc_vfs;
1112
1113 err_alloc:
1114 if (ret)
1115 i40e_free_vfs(pf);
1116 err_iov:
1117 /* Re-enable interrupt 0. */
1118 i40e_irq_dynamic_enable_icr0(pf, false);
1119 return ret;
1120 }
1121
1122 #endif
1123 /**
1124 * i40e_pci_sriov_enable
1125 * @pdev: pointer to a pci_dev structure
1126 * @num_vfs: number of VFs to allocate
1127 *
1128 * Enable or change the number of VFs
1129 **/
1130 static int i40e_pci_sriov_enable(struct pci_dev *pdev, int num_vfs)
1131 {
1132 #ifdef CONFIG_PCI_IOV
1133 struct i40e_pf *pf = pci_get_drvdata(pdev);
1134 int pre_existing_vfs = pci_num_vf(pdev);
1135 int err = 0;
1136
1137 if (test_bit(__I40E_TESTING, &pf->state)) {
1138 dev_warn(&pdev->dev,
1139 "Cannot enable SR-IOV virtual functions while the device is undergoing diagnostic testing\n");
1140 err = -EPERM;
1141 goto err_out;
1142 }
1143
1144 if (pre_existing_vfs && pre_existing_vfs != num_vfs)
1145 i40e_free_vfs(pf);
1146 else if (pre_existing_vfs && pre_existing_vfs == num_vfs)
1147 goto out;
1148
1149 if (num_vfs > pf->num_req_vfs) {
1150 dev_warn(&pdev->dev, "Unable to enable %d VFs. Limited to %d VFs due to device resource constraints.\n",
1151 num_vfs, pf->num_req_vfs);
1152 err = -EPERM;
1153 goto err_out;
1154 }
1155
1156 dev_info(&pdev->dev, "Allocating %d VFs.\n", num_vfs);
1157 err = i40e_alloc_vfs(pf, num_vfs);
1158 if (err) {
1159 dev_warn(&pdev->dev, "Failed to enable SR-IOV: %d\n", err);
1160 goto err_out;
1161 }
1162
1163 out:
1164 return num_vfs;
1165
1166 err_out:
1167 return err;
1168 #endif
1169 return 0;
1170 }
1171
1172 /**
1173 * i40e_pci_sriov_configure
1174 * @pdev: pointer to a pci_dev structure
1175 * @num_vfs: number of VFs to allocate
1176 *
1177 * Enable or change the number of VFs. Called when the user updates the number
1178 * of VFs in sysfs.
1179 **/
1180 int i40e_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)
1181 {
1182 struct i40e_pf *pf = pci_get_drvdata(pdev);
1183
1184 if (num_vfs) {
1185 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
1186 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
1187 i40e_do_reset_safe(pf,
1188 BIT_ULL(__I40E_PF_RESET_REQUESTED));
1189 }
1190 return i40e_pci_sriov_enable(pdev, num_vfs);
1191 }
1192
1193 if (!pci_vfs_assigned(pf->pdev)) {
1194 i40e_free_vfs(pf);
1195 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
1196 i40e_do_reset_safe(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
1197 } else {
1198 dev_warn(&pdev->dev, "Unable to free VFs because some are assigned to VMs.\n");
1199 return -EINVAL;
1200 }
1201 return 0;
1202 }
1203
1204 /***********************virtual channel routines******************/
1205
1206 /**
1207 * i40e_vc_send_msg_to_vf
1208 * @vf: pointer to the VF info
1209 * @v_opcode: virtual channel opcode
1210 * @v_retval: virtual channel return value
1211 * @msg: pointer to the msg buffer
1212 * @msglen: msg length
1213 *
1214 * send msg to VF
1215 **/
1216 static int i40e_vc_send_msg_to_vf(struct i40e_vf *vf, u32 v_opcode,
1217 u32 v_retval, u8 *msg, u16 msglen)
1218 {
1219 struct i40e_pf *pf;
1220 struct i40e_hw *hw;
1221 int abs_vf_id;
1222 i40e_status aq_ret;
1223
1224 /* validate the request */
1225 if (!vf || vf->vf_id >= vf->pf->num_alloc_vfs)
1226 return -EINVAL;
1227
1228 pf = vf->pf;
1229 hw = &pf->hw;
1230 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
1231
1232 /* single place to detect unsuccessful return values */
1233 if (v_retval) {
1234 vf->num_invalid_msgs++;
1235 dev_err(&pf->pdev->dev, "VF %d failed opcode %d, error: %d\n",
1236 vf->vf_id, v_opcode, v_retval);
1237 if (vf->num_invalid_msgs >
1238 I40E_DEFAULT_NUM_INVALID_MSGS_ALLOWED) {
1239 dev_err(&pf->pdev->dev,
1240 "Number of invalid messages exceeded for VF %d\n",
1241 vf->vf_id);
1242 dev_err(&pf->pdev->dev, "Use PF Control I/F to enable the VF\n");
1243 set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
1244 }
1245 } else {
1246 vf->num_valid_msgs++;
1247 /* reset the invalid counter, if a valid message is received. */
1248 vf->num_invalid_msgs = 0;
1249 }
1250
1251 aq_ret = i40e_aq_send_msg_to_vf(hw, abs_vf_id, v_opcode, v_retval,
1252 msg, msglen, NULL);
1253 if (aq_ret) {
1254 dev_err(&pf->pdev->dev,
1255 "Unable to send the message to VF %d aq_err %d\n",
1256 vf->vf_id, pf->hw.aq.asq_last_status);
1257 return -EIO;
1258 }
1259
1260 return 0;
1261 }
1262
1263 /**
1264 * i40e_vc_send_resp_to_vf
1265 * @vf: pointer to the VF info
1266 * @opcode: operation code
1267 * @retval: return value
1268 *
1269 * send resp msg to VF
1270 **/
1271 static int i40e_vc_send_resp_to_vf(struct i40e_vf *vf,
1272 enum i40e_virtchnl_ops opcode,
1273 i40e_status retval)
1274 {
1275 return i40e_vc_send_msg_to_vf(vf, opcode, retval, NULL, 0);
1276 }
1277
1278 /**
1279 * i40e_vc_get_version_msg
1280 * @vf: pointer to the VF info
1281 *
1282 * called from the VF to request the API version used by the PF
1283 **/
1284 static int i40e_vc_get_version_msg(struct i40e_vf *vf, u8 *msg)
1285 {
1286 struct i40e_virtchnl_version_info info = {
1287 I40E_VIRTCHNL_VERSION_MAJOR, I40E_VIRTCHNL_VERSION_MINOR
1288 };
1289
1290 vf->vf_ver = *(struct i40e_virtchnl_version_info *)msg;
1291 /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */
1292 if (VF_IS_V10(vf))
1293 info.minor = I40E_VIRTCHNL_VERSION_MINOR_NO_VF_CAPS;
1294 return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_VERSION,
1295 I40E_SUCCESS, (u8 *)&info,
1296 sizeof(struct
1297 i40e_virtchnl_version_info));
1298 }
1299
1300 /**
1301 * i40e_vc_get_vf_resources_msg
1302 * @vf: pointer to the VF info
1303 * @msg: pointer to the msg buffer
1304 * @msglen: msg length
1305 *
1306 * called from the VF to request its resources
1307 **/
1308 static int i40e_vc_get_vf_resources_msg(struct i40e_vf *vf, u8 *msg)
1309 {
1310 struct i40e_virtchnl_vf_resource *vfres = NULL;
1311 struct i40e_pf *pf = vf->pf;
1312 i40e_status aq_ret = 0;
1313 struct i40e_vsi *vsi;
1314 int i = 0, len = 0;
1315 int num_vsis = 1;
1316 int ret;
1317
1318 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
1319 aq_ret = I40E_ERR_PARAM;
1320 goto err;
1321 }
1322
1323 len = (sizeof(struct i40e_virtchnl_vf_resource) +
1324 sizeof(struct i40e_virtchnl_vsi_resource) * num_vsis);
1325
1326 vfres = kzalloc(len, GFP_KERNEL);
1327 if (!vfres) {
1328 aq_ret = I40E_ERR_NO_MEMORY;
1329 len = 0;
1330 goto err;
1331 }
1332 if (VF_IS_V11(vf))
1333 vf->driver_caps = *(u32 *)msg;
1334 else
1335 vf->driver_caps = I40E_VIRTCHNL_VF_OFFLOAD_L2 |
1336 I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG |
1337 I40E_VIRTCHNL_VF_OFFLOAD_VLAN;
1338
1339 vfres->vf_offload_flags = I40E_VIRTCHNL_VF_OFFLOAD_L2;
1340 vsi = pf->vsi[vf->lan_vsi_idx];
1341 if (!vsi->info.pvid)
1342 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_VLAN;
1343
1344 if (i40e_vf_client_capable(pf, vf->vf_id, I40E_CLIENT_IWARP) &&
1345 (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_IWARP)) {
1346 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_IWARP;
1347 set_bit(I40E_VF_STAT_IWARPENA, &vf->vf_states);
1348 }
1349
1350 if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) {
1351 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ)
1352 vfres->vf_offload_flags |=
1353 I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ;
1354 } else {
1355 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG;
1356 }
1357
1358 if (pf->flags & I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE) {
1359 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1360 vfres->vf_offload_flags |=
1361 I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2;
1362 }
1363
1364 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING)
1365 vfres->vf_offload_flags |= I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING;
1366
1367 if (pf->flags & I40E_FLAG_WB_ON_ITR_CAPABLE) {
1368 if (vf->driver_caps & I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
1369 vfres->vf_offload_flags |=
1370 I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR;
1371 }
1372
1373 vfres->num_vsis = num_vsis;
1374 vfres->num_queue_pairs = vf->num_queue_pairs;
1375 vfres->max_vectors = pf->hw.func_caps.num_msix_vectors_vf;
1376 if (vf->lan_vsi_idx) {
1377 vfres->vsi_res[i].vsi_id = vf->lan_vsi_id;
1378 vfres->vsi_res[i].vsi_type = I40E_VSI_SRIOV;
1379 vfres->vsi_res[i].num_queue_pairs = vsi->alloc_queue_pairs;
1380 /* VFs only use TC 0 */
1381 vfres->vsi_res[i].qset_handle
1382 = le16_to_cpu(vsi->info.qs_handle[0]);
1383 ether_addr_copy(vfres->vsi_res[i].default_mac_addr,
1384 vf->default_lan_addr.addr);
1385 i++;
1386 }
1387 set_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states);
1388
1389 err:
1390 /* send the response back to the VF */
1391 ret = i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_VF_RESOURCES,
1392 aq_ret, (u8 *)vfres, len);
1393
1394 kfree(vfres);
1395 return ret;
1396 }
1397
1398 /**
1399 * i40e_vc_reset_vf_msg
1400 * @vf: pointer to the VF info
1401 * @msg: pointer to the msg buffer
1402 * @msglen: msg length
1403 *
1404 * called from the VF to reset itself,
1405 * unlike other virtchnl messages, PF driver
1406 * doesn't send the response back to the VF
1407 **/
1408 static void i40e_vc_reset_vf_msg(struct i40e_vf *vf)
1409 {
1410 if (test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states))
1411 i40e_reset_vf(vf, false);
1412 }
1413
1414 /**
1415 * i40e_vc_config_promiscuous_mode_msg
1416 * @vf: pointer to the VF info
1417 * @msg: pointer to the msg buffer
1418 * @msglen: msg length
1419 *
1420 * called from the VF to configure the promiscuous mode of
1421 * VF vsis
1422 **/
1423 static int i40e_vc_config_promiscuous_mode_msg(struct i40e_vf *vf,
1424 u8 *msg, u16 msglen)
1425 {
1426 struct i40e_virtchnl_promisc_info *info =
1427 (struct i40e_virtchnl_promisc_info *)msg;
1428 struct i40e_pf *pf = vf->pf;
1429 struct i40e_hw *hw = &pf->hw;
1430 struct i40e_vsi *vsi;
1431 bool allmulti = false;
1432 i40e_status aq_ret;
1433
1434 vsi = i40e_find_vsi_from_id(pf, info->vsi_id);
1435 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1436 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1437 !i40e_vc_isvalid_vsi_id(vf, info->vsi_id) ||
1438 (vsi->type != I40E_VSI_FCOE)) {
1439 aq_ret = I40E_ERR_PARAM;
1440 goto error_param;
1441 }
1442 if (info->flags & I40E_FLAG_VF_MULTICAST_PROMISC)
1443 allmulti = true;
1444 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(hw, vsi->seid,
1445 allmulti, NULL);
1446
1447 error_param:
1448 /* send the response to the VF */
1449 return i40e_vc_send_resp_to_vf(vf,
1450 I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE,
1451 aq_ret);
1452 }
1453
1454 /**
1455 * i40e_vc_config_queues_msg
1456 * @vf: pointer to the VF info
1457 * @msg: pointer to the msg buffer
1458 * @msglen: msg length
1459 *
1460 * called from the VF to configure the rx/tx
1461 * queues
1462 **/
1463 static int i40e_vc_config_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1464 {
1465 struct i40e_virtchnl_vsi_queue_config_info *qci =
1466 (struct i40e_virtchnl_vsi_queue_config_info *)msg;
1467 struct i40e_virtchnl_queue_pair_info *qpi;
1468 struct i40e_pf *pf = vf->pf;
1469 u16 vsi_id, vsi_queue_id;
1470 i40e_status aq_ret = 0;
1471 int i;
1472
1473 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1474 aq_ret = I40E_ERR_PARAM;
1475 goto error_param;
1476 }
1477
1478 vsi_id = qci->vsi_id;
1479 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1480 aq_ret = I40E_ERR_PARAM;
1481 goto error_param;
1482 }
1483 for (i = 0; i < qci->num_queue_pairs; i++) {
1484 qpi = &qci->qpair[i];
1485 vsi_queue_id = qpi->txq.queue_id;
1486 if ((qpi->txq.vsi_id != vsi_id) ||
1487 (qpi->rxq.vsi_id != vsi_id) ||
1488 (qpi->rxq.queue_id != vsi_queue_id) ||
1489 !i40e_vc_isvalid_queue_id(vf, vsi_id, vsi_queue_id)) {
1490 aq_ret = I40E_ERR_PARAM;
1491 goto error_param;
1492 }
1493
1494 if (i40e_config_vsi_rx_queue(vf, vsi_id, vsi_queue_id,
1495 &qpi->rxq) ||
1496 i40e_config_vsi_tx_queue(vf, vsi_id, vsi_queue_id,
1497 &qpi->txq)) {
1498 aq_ret = I40E_ERR_PARAM;
1499 goto error_param;
1500 }
1501 }
1502 /* set vsi num_queue_pairs in use to num configured by VF */
1503 pf->vsi[vf->lan_vsi_idx]->num_queue_pairs = qci->num_queue_pairs;
1504
1505 error_param:
1506 /* send the response to the VF */
1507 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES,
1508 aq_ret);
1509 }
1510
1511 /**
1512 * i40e_vc_config_irq_map_msg
1513 * @vf: pointer to the VF info
1514 * @msg: pointer to the msg buffer
1515 * @msglen: msg length
1516 *
1517 * called from the VF to configure the irq to
1518 * queue map
1519 **/
1520 static int i40e_vc_config_irq_map_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1521 {
1522 struct i40e_virtchnl_irq_map_info *irqmap_info =
1523 (struct i40e_virtchnl_irq_map_info *)msg;
1524 struct i40e_virtchnl_vector_map *map;
1525 u16 vsi_id, vsi_queue_id, vector_id;
1526 i40e_status aq_ret = 0;
1527 unsigned long tempmap;
1528 int i;
1529
1530 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1531 aq_ret = I40E_ERR_PARAM;
1532 goto error_param;
1533 }
1534
1535 for (i = 0; i < irqmap_info->num_vectors; i++) {
1536 map = &irqmap_info->vecmap[i];
1537
1538 vector_id = map->vector_id;
1539 vsi_id = map->vsi_id;
1540 /* validate msg params */
1541 if (!i40e_vc_isvalid_vector_id(vf, vector_id) ||
1542 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1543 aq_ret = I40E_ERR_PARAM;
1544 goto error_param;
1545 }
1546
1547 /* lookout for the invalid queue index */
1548 tempmap = map->rxq_map;
1549 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1550 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
1551 vsi_queue_id)) {
1552 aq_ret = I40E_ERR_PARAM;
1553 goto error_param;
1554 }
1555 }
1556
1557 tempmap = map->txq_map;
1558 for_each_set_bit(vsi_queue_id, &tempmap, I40E_MAX_VSI_QP) {
1559 if (!i40e_vc_isvalid_queue_id(vf, vsi_id,
1560 vsi_queue_id)) {
1561 aq_ret = I40E_ERR_PARAM;
1562 goto error_param;
1563 }
1564 }
1565
1566 i40e_config_irq_link_list(vf, vsi_id, map);
1567 }
1568 error_param:
1569 /* send the response to the VF */
1570 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP,
1571 aq_ret);
1572 }
1573
1574 /**
1575 * i40e_vc_enable_queues_msg
1576 * @vf: pointer to the VF info
1577 * @msg: pointer to the msg buffer
1578 * @msglen: msg length
1579 *
1580 * called from the VF to enable all or specific queue(s)
1581 **/
1582 static int i40e_vc_enable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1583 {
1584 struct i40e_virtchnl_queue_select *vqs =
1585 (struct i40e_virtchnl_queue_select *)msg;
1586 struct i40e_pf *pf = vf->pf;
1587 u16 vsi_id = vqs->vsi_id;
1588 i40e_status aq_ret = 0;
1589
1590 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1591 aq_ret = I40E_ERR_PARAM;
1592 goto error_param;
1593 }
1594
1595 if (!i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1596 aq_ret = I40E_ERR_PARAM;
1597 goto error_param;
1598 }
1599
1600 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
1601 aq_ret = I40E_ERR_PARAM;
1602 goto error_param;
1603 }
1604
1605 if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], true))
1606 aq_ret = I40E_ERR_TIMEOUT;
1607 error_param:
1608 /* send the response to the VF */
1609 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ENABLE_QUEUES,
1610 aq_ret);
1611 }
1612
1613 /**
1614 * i40e_vc_disable_queues_msg
1615 * @vf: pointer to the VF info
1616 * @msg: pointer to the msg buffer
1617 * @msglen: msg length
1618 *
1619 * called from the VF to disable all or specific
1620 * queue(s)
1621 **/
1622 static int i40e_vc_disable_queues_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1623 {
1624 struct i40e_virtchnl_queue_select *vqs =
1625 (struct i40e_virtchnl_queue_select *)msg;
1626 struct i40e_pf *pf = vf->pf;
1627 i40e_status aq_ret = 0;
1628
1629 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1630 aq_ret = I40E_ERR_PARAM;
1631 goto error_param;
1632 }
1633
1634 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1635 aq_ret = I40E_ERR_PARAM;
1636 goto error_param;
1637 }
1638
1639 if ((0 == vqs->rx_queues) && (0 == vqs->tx_queues)) {
1640 aq_ret = I40E_ERR_PARAM;
1641 goto error_param;
1642 }
1643
1644 if (i40e_vsi_control_rings(pf->vsi[vf->lan_vsi_idx], false))
1645 aq_ret = I40E_ERR_TIMEOUT;
1646
1647 error_param:
1648 /* send the response to the VF */
1649 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DISABLE_QUEUES,
1650 aq_ret);
1651 }
1652
1653 /**
1654 * i40e_vc_get_stats_msg
1655 * @vf: pointer to the VF info
1656 * @msg: pointer to the msg buffer
1657 * @msglen: msg length
1658 *
1659 * called from the VF to get vsi stats
1660 **/
1661 static int i40e_vc_get_stats_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1662 {
1663 struct i40e_virtchnl_queue_select *vqs =
1664 (struct i40e_virtchnl_queue_select *)msg;
1665 struct i40e_pf *pf = vf->pf;
1666 struct i40e_eth_stats stats;
1667 i40e_status aq_ret = 0;
1668 struct i40e_vsi *vsi;
1669
1670 memset(&stats, 0, sizeof(struct i40e_eth_stats));
1671
1672 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states)) {
1673 aq_ret = I40E_ERR_PARAM;
1674 goto error_param;
1675 }
1676
1677 if (!i40e_vc_isvalid_vsi_id(vf, vqs->vsi_id)) {
1678 aq_ret = I40E_ERR_PARAM;
1679 goto error_param;
1680 }
1681
1682 vsi = pf->vsi[vf->lan_vsi_idx];
1683 if (!vsi) {
1684 aq_ret = I40E_ERR_PARAM;
1685 goto error_param;
1686 }
1687 i40e_update_eth_stats(vsi);
1688 stats = vsi->eth_stats;
1689
1690 error_param:
1691 /* send the response back to the VF */
1692 return i40e_vc_send_msg_to_vf(vf, I40E_VIRTCHNL_OP_GET_STATS, aq_ret,
1693 (u8 *)&stats, sizeof(stats));
1694 }
1695
1696 /**
1697 * i40e_check_vf_permission
1698 * @vf: pointer to the VF info
1699 * @macaddr: pointer to the MAC Address being checked
1700 *
1701 * Check if the VF has permission to add or delete unicast MAC address
1702 * filters and return error code -EPERM if not. Then check if the
1703 * address filter requested is broadcast or zero and if so return
1704 * an invalid MAC address error code.
1705 **/
1706 static inline int i40e_check_vf_permission(struct i40e_vf *vf, u8 *macaddr)
1707 {
1708 struct i40e_pf *pf = vf->pf;
1709 int ret = 0;
1710
1711 if (is_broadcast_ether_addr(macaddr) ||
1712 is_zero_ether_addr(macaddr)) {
1713 dev_err(&pf->pdev->dev, "invalid VF MAC addr %pM\n", macaddr);
1714 ret = I40E_ERR_INVALID_MAC_ADDR;
1715 } else if (vf->pf_set_mac && !is_multicast_ether_addr(macaddr) &&
1716 !ether_addr_equal(macaddr, vf->default_lan_addr.addr)) {
1717 /* If the host VMM administrator has set the VF MAC address
1718 * administratively via the ndo_set_vf_mac command then deny
1719 * permission to the VF to add or delete unicast MAC addresses.
1720 * The VF may request to set the MAC address filter already
1721 * assigned to it so do not return an error in that case.
1722 */
1723 dev_err(&pf->pdev->dev,
1724 "VF attempting to override administratively set MAC address\nPlease reload the VF driver to resume normal operation\n");
1725 ret = -EPERM;
1726 }
1727 return ret;
1728 }
1729
1730 /**
1731 * i40e_vc_add_mac_addr_msg
1732 * @vf: pointer to the VF info
1733 * @msg: pointer to the msg buffer
1734 * @msglen: msg length
1735 *
1736 * add guest mac address filter
1737 **/
1738 static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1739 {
1740 struct i40e_virtchnl_ether_addr_list *al =
1741 (struct i40e_virtchnl_ether_addr_list *)msg;
1742 struct i40e_pf *pf = vf->pf;
1743 struct i40e_vsi *vsi = NULL;
1744 u16 vsi_id = al->vsi_id;
1745 i40e_status ret = 0;
1746 int i;
1747
1748 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1749 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1750 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1751 ret = I40E_ERR_PARAM;
1752 goto error_param;
1753 }
1754
1755 for (i = 0; i < al->num_elements; i++) {
1756 ret = i40e_check_vf_permission(vf, al->list[i].addr);
1757 if (ret)
1758 goto error_param;
1759 }
1760 vsi = pf->vsi[vf->lan_vsi_idx];
1761
1762 /* Lock once, because all function inside for loop accesses VSI's
1763 * MAC filter list which needs to be protected using same lock.
1764 */
1765 spin_lock_bh(&vsi->mac_filter_list_lock);
1766
1767 /* add new addresses to the list */
1768 for (i = 0; i < al->num_elements; i++) {
1769 struct i40e_mac_filter *f;
1770
1771 f = i40e_find_mac(vsi, al->list[i].addr, true, false);
1772 if (!f) {
1773 if (i40e_is_vsi_in_vlan(vsi))
1774 f = i40e_put_mac_in_vlan(vsi, al->list[i].addr,
1775 true, false);
1776 else
1777 f = i40e_add_filter(vsi, al->list[i].addr, -1,
1778 true, false);
1779 }
1780
1781 if (!f) {
1782 dev_err(&pf->pdev->dev,
1783 "Unable to add MAC filter %pM for VF %d\n",
1784 al->list[i].addr, vf->vf_id);
1785 ret = I40E_ERR_PARAM;
1786 spin_unlock_bh(&vsi->mac_filter_list_lock);
1787 goto error_param;
1788 }
1789 }
1790 spin_unlock_bh(&vsi->mac_filter_list_lock);
1791
1792 /* program the updated filter list */
1793 ret = i40e_sync_vsi_filters(vsi);
1794 if (ret)
1795 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
1796 vf->vf_id, ret);
1797
1798 error_param:
1799 /* send the response to the VF */
1800 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS,
1801 ret);
1802 }
1803
1804 /**
1805 * i40e_vc_del_mac_addr_msg
1806 * @vf: pointer to the VF info
1807 * @msg: pointer to the msg buffer
1808 * @msglen: msg length
1809 *
1810 * remove guest mac address filter
1811 **/
1812 static int i40e_vc_del_mac_addr_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1813 {
1814 struct i40e_virtchnl_ether_addr_list *al =
1815 (struct i40e_virtchnl_ether_addr_list *)msg;
1816 struct i40e_pf *pf = vf->pf;
1817 struct i40e_vsi *vsi = NULL;
1818 u16 vsi_id = al->vsi_id;
1819 i40e_status ret = 0;
1820 int i;
1821
1822 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1823 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1824 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1825 ret = I40E_ERR_PARAM;
1826 goto error_param;
1827 }
1828
1829 for (i = 0; i < al->num_elements; i++) {
1830 if (is_broadcast_ether_addr(al->list[i].addr) ||
1831 is_zero_ether_addr(al->list[i].addr)) {
1832 dev_err(&pf->pdev->dev, "Invalid MAC addr %pM for VF %d\n",
1833 al->list[i].addr, vf->vf_id);
1834 ret = I40E_ERR_INVALID_MAC_ADDR;
1835 goto error_param;
1836 }
1837 }
1838 vsi = pf->vsi[vf->lan_vsi_idx];
1839
1840 spin_lock_bh(&vsi->mac_filter_list_lock);
1841 /* delete addresses from the list */
1842 for (i = 0; i < al->num_elements; i++)
1843 if (i40e_del_mac_all_vlan(vsi, al->list[i].addr, true, false)) {
1844 ret = I40E_ERR_INVALID_MAC_ADDR;
1845 spin_unlock_bh(&vsi->mac_filter_list_lock);
1846 goto error_param;
1847 }
1848
1849 spin_unlock_bh(&vsi->mac_filter_list_lock);
1850
1851 /* program the updated filter list */
1852 ret = i40e_sync_vsi_filters(vsi);
1853 if (ret)
1854 dev_err(&pf->pdev->dev, "Unable to program VF %d MAC filters, error %d\n",
1855 vf->vf_id, ret);
1856
1857 error_param:
1858 /* send the response to the VF */
1859 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS,
1860 ret);
1861 }
1862
1863 /**
1864 * i40e_vc_add_vlan_msg
1865 * @vf: pointer to the VF info
1866 * @msg: pointer to the msg buffer
1867 * @msglen: msg length
1868 *
1869 * program guest vlan id
1870 **/
1871 static int i40e_vc_add_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1872 {
1873 struct i40e_virtchnl_vlan_filter_list *vfl =
1874 (struct i40e_virtchnl_vlan_filter_list *)msg;
1875 struct i40e_pf *pf = vf->pf;
1876 struct i40e_vsi *vsi = NULL;
1877 u16 vsi_id = vfl->vsi_id;
1878 i40e_status aq_ret = 0;
1879 int i;
1880
1881 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1882 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1883 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1884 aq_ret = I40E_ERR_PARAM;
1885 goto error_param;
1886 }
1887
1888 for (i = 0; i < vfl->num_elements; i++) {
1889 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
1890 aq_ret = I40E_ERR_PARAM;
1891 dev_err(&pf->pdev->dev,
1892 "invalid VF VLAN id %d\n", vfl->vlan_id[i]);
1893 goto error_param;
1894 }
1895 }
1896 vsi = pf->vsi[vf->lan_vsi_idx];
1897 if (vsi->info.pvid) {
1898 aq_ret = I40E_ERR_PARAM;
1899 goto error_param;
1900 }
1901
1902 i40e_vlan_stripping_enable(vsi);
1903 for (i = 0; i < vfl->num_elements; i++) {
1904 /* add new VLAN filter */
1905 int ret = i40e_vsi_add_vlan(vsi, vfl->vlan_id[i]);
1906
1907 if (ret)
1908 dev_err(&pf->pdev->dev,
1909 "Unable to add VLAN filter %d for VF %d, error %d\n",
1910 vfl->vlan_id[i], vf->vf_id, ret);
1911 }
1912
1913 error_param:
1914 /* send the response to the VF */
1915 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_ADD_VLAN, aq_ret);
1916 }
1917
1918 /**
1919 * i40e_vc_remove_vlan_msg
1920 * @vf: pointer to the VF info
1921 * @msg: pointer to the msg buffer
1922 * @msglen: msg length
1923 *
1924 * remove programmed guest vlan id
1925 **/
1926 static int i40e_vc_remove_vlan_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1927 {
1928 struct i40e_virtchnl_vlan_filter_list *vfl =
1929 (struct i40e_virtchnl_vlan_filter_list *)msg;
1930 struct i40e_pf *pf = vf->pf;
1931 struct i40e_vsi *vsi = NULL;
1932 u16 vsi_id = vfl->vsi_id;
1933 i40e_status aq_ret = 0;
1934 int i;
1935
1936 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1937 !test_bit(I40E_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps) ||
1938 !i40e_vc_isvalid_vsi_id(vf, vsi_id)) {
1939 aq_ret = I40E_ERR_PARAM;
1940 goto error_param;
1941 }
1942
1943 for (i = 0; i < vfl->num_elements; i++) {
1944 if (vfl->vlan_id[i] > I40E_MAX_VLANID) {
1945 aq_ret = I40E_ERR_PARAM;
1946 goto error_param;
1947 }
1948 }
1949
1950 vsi = pf->vsi[vf->lan_vsi_idx];
1951 if (vsi->info.pvid) {
1952 aq_ret = I40E_ERR_PARAM;
1953 goto error_param;
1954 }
1955
1956 for (i = 0; i < vfl->num_elements; i++) {
1957 int ret = i40e_vsi_kill_vlan(vsi, vfl->vlan_id[i]);
1958
1959 if (ret)
1960 dev_err(&pf->pdev->dev,
1961 "Unable to delete VLAN filter %d for VF %d, error %d\n",
1962 vfl->vlan_id[i], vf->vf_id, ret);
1963 }
1964
1965 error_param:
1966 /* send the response to the VF */
1967 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_DEL_VLAN, aq_ret);
1968 }
1969
1970 /**
1971 * i40e_vc_iwarp_msg
1972 * @vf: pointer to the VF info
1973 * @msg: pointer to the msg buffer
1974 * @msglen: msg length
1975 *
1976 * called from the VF for the iwarp msgs
1977 **/
1978 static int i40e_vc_iwarp_msg(struct i40e_vf *vf, u8 *msg, u16 msglen)
1979 {
1980 struct i40e_pf *pf = vf->pf;
1981 int abs_vf_id = vf->vf_id + pf->hw.func_caps.vf_base_id;
1982 i40e_status aq_ret = 0;
1983
1984 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
1985 !test_bit(I40E_VF_STAT_IWARPENA, &vf->vf_states)) {
1986 aq_ret = I40E_ERR_PARAM;
1987 goto error_param;
1988 }
1989
1990 i40e_notify_client_of_vf_msg(pf->vsi[pf->lan_vsi], abs_vf_id,
1991 msg, msglen);
1992
1993 error_param:
1994 /* send the response to the VF */
1995 return i40e_vc_send_resp_to_vf(vf, I40E_VIRTCHNL_OP_IWARP,
1996 aq_ret);
1997 }
1998
1999 /**
2000 * i40e_vc_iwarp_qvmap_msg
2001 * @vf: pointer to the VF info
2002 * @msg: pointer to the msg buffer
2003 * @msglen: msg length
2004 * @config: config qvmap or release it
2005 *
2006 * called from the VF for the iwarp msgs
2007 **/
2008 static int i40e_vc_iwarp_qvmap_msg(struct i40e_vf *vf, u8 *msg, u16 msglen,
2009 bool config)
2010 {
2011 struct i40e_virtchnl_iwarp_qvlist_info *qvlist_info =
2012 (struct i40e_virtchnl_iwarp_qvlist_info *)msg;
2013 i40e_status aq_ret = 0;
2014
2015 if (!test_bit(I40E_VF_STAT_ACTIVE, &vf->vf_states) ||
2016 !test_bit(I40E_VF_STAT_IWARPENA, &vf->vf_states)) {
2017 aq_ret = I40E_ERR_PARAM;
2018 goto error_param;
2019 }
2020
2021 if (config) {
2022 if (i40e_config_iwarp_qvlist(vf, qvlist_info))
2023 aq_ret = I40E_ERR_PARAM;
2024 } else {
2025 i40e_release_iwarp_qvlist(vf);
2026 }
2027
2028 error_param:
2029 /* send the response to the VF */
2030 return i40e_vc_send_resp_to_vf(vf,
2031 config ? I40E_VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP :
2032 I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP,
2033 aq_ret);
2034 }
2035
2036 /**
2037 * i40e_vc_validate_vf_msg
2038 * @vf: pointer to the VF info
2039 * @msg: pointer to the msg buffer
2040 * @msglen: msg length
2041 * @msghndl: msg handle
2042 *
2043 * validate msg
2044 **/
2045 static int i40e_vc_validate_vf_msg(struct i40e_vf *vf, u32 v_opcode,
2046 u32 v_retval, u8 *msg, u16 msglen)
2047 {
2048 bool err_msg_format = false;
2049 int valid_len;
2050
2051 /* Check if VF is disabled. */
2052 if (test_bit(I40E_VF_STAT_DISABLED, &vf->vf_states))
2053 return I40E_ERR_PARAM;
2054
2055 /* Validate message length. */
2056 switch (v_opcode) {
2057 case I40E_VIRTCHNL_OP_VERSION:
2058 valid_len = sizeof(struct i40e_virtchnl_version_info);
2059 break;
2060 case I40E_VIRTCHNL_OP_RESET_VF:
2061 valid_len = 0;
2062 break;
2063 case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
2064 if (VF_IS_V11(vf))
2065 valid_len = sizeof(u32);
2066 else
2067 valid_len = 0;
2068 break;
2069 case I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE:
2070 valid_len = sizeof(struct i40e_virtchnl_txq_info);
2071 break;
2072 case I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE:
2073 valid_len = sizeof(struct i40e_virtchnl_rxq_info);
2074 break;
2075 case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
2076 valid_len = sizeof(struct i40e_virtchnl_vsi_queue_config_info);
2077 if (msglen >= valid_len) {
2078 struct i40e_virtchnl_vsi_queue_config_info *vqc =
2079 (struct i40e_virtchnl_vsi_queue_config_info *)msg;
2080 valid_len += (vqc->num_queue_pairs *
2081 sizeof(struct
2082 i40e_virtchnl_queue_pair_info));
2083 if (vqc->num_queue_pairs == 0)
2084 err_msg_format = true;
2085 }
2086 break;
2087 case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
2088 valid_len = sizeof(struct i40e_virtchnl_irq_map_info);
2089 if (msglen >= valid_len) {
2090 struct i40e_virtchnl_irq_map_info *vimi =
2091 (struct i40e_virtchnl_irq_map_info *)msg;
2092 valid_len += (vimi->num_vectors *
2093 sizeof(struct i40e_virtchnl_vector_map));
2094 if (vimi->num_vectors == 0)
2095 err_msg_format = true;
2096 }
2097 break;
2098 case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
2099 case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
2100 valid_len = sizeof(struct i40e_virtchnl_queue_select);
2101 break;
2102 case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
2103 case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
2104 valid_len = sizeof(struct i40e_virtchnl_ether_addr_list);
2105 if (msglen >= valid_len) {
2106 struct i40e_virtchnl_ether_addr_list *veal =
2107 (struct i40e_virtchnl_ether_addr_list *)msg;
2108 valid_len += veal->num_elements *
2109 sizeof(struct i40e_virtchnl_ether_addr);
2110 if (veal->num_elements == 0)
2111 err_msg_format = true;
2112 }
2113 break;
2114 case I40E_VIRTCHNL_OP_ADD_VLAN:
2115 case I40E_VIRTCHNL_OP_DEL_VLAN:
2116 valid_len = sizeof(struct i40e_virtchnl_vlan_filter_list);
2117 if (msglen >= valid_len) {
2118 struct i40e_virtchnl_vlan_filter_list *vfl =
2119 (struct i40e_virtchnl_vlan_filter_list *)msg;
2120 valid_len += vfl->num_elements * sizeof(u16);
2121 if (vfl->num_elements == 0)
2122 err_msg_format = true;
2123 }
2124 break;
2125 case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
2126 valid_len = sizeof(struct i40e_virtchnl_promisc_info);
2127 break;
2128 case I40E_VIRTCHNL_OP_GET_STATS:
2129 valid_len = sizeof(struct i40e_virtchnl_queue_select);
2130 break;
2131 case I40E_VIRTCHNL_OP_IWARP:
2132 /* These messages are opaque to us and will be validated in
2133 * the RDMA client code. We just need to check for nonzero
2134 * length. The firmware will enforce max length restrictions.
2135 */
2136 if (msglen)
2137 valid_len = msglen;
2138 else
2139 err_msg_format = true;
2140 break;
2141 case I40E_VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
2142 valid_len = 0;
2143 break;
2144 case I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
2145 valid_len = sizeof(struct i40e_virtchnl_iwarp_qvlist_info);
2146 if (msglen >= valid_len) {
2147 struct i40e_virtchnl_iwarp_qvlist_info *qv =
2148 (struct i40e_virtchnl_iwarp_qvlist_info *)msg;
2149 if (qv->num_vectors == 0) {
2150 err_msg_format = true;
2151 break;
2152 }
2153 valid_len += ((qv->num_vectors - 1) *
2154 sizeof(struct i40e_virtchnl_iwarp_qv_info));
2155 }
2156 break;
2157 /* These are always errors coming from the VF. */
2158 case I40E_VIRTCHNL_OP_EVENT:
2159 case I40E_VIRTCHNL_OP_UNKNOWN:
2160 default:
2161 return -EPERM;
2162 }
2163 /* few more checks */
2164 if ((valid_len != msglen) || (err_msg_format)) {
2165 i40e_vc_send_resp_to_vf(vf, v_opcode, I40E_ERR_PARAM);
2166 return -EINVAL;
2167 } else {
2168 return 0;
2169 }
2170 }
2171
2172 /**
2173 * i40e_vc_process_vf_msg
2174 * @pf: pointer to the PF structure
2175 * @vf_id: source VF id
2176 * @msg: pointer to the msg buffer
2177 * @msglen: msg length
2178 * @msghndl: msg handle
2179 *
2180 * called from the common aeq/arq handler to
2181 * process request from VF
2182 **/
2183 int i40e_vc_process_vf_msg(struct i40e_pf *pf, u16 vf_id, u32 v_opcode,
2184 u32 v_retval, u8 *msg, u16 msglen)
2185 {
2186 struct i40e_hw *hw = &pf->hw;
2187 unsigned int local_vf_id = vf_id - hw->func_caps.vf_base_id;
2188 struct i40e_vf *vf;
2189 int ret;
2190
2191 pf->vf_aq_requests++;
2192 if (local_vf_id >= pf->num_alloc_vfs)
2193 return -EINVAL;
2194 vf = &(pf->vf[local_vf_id]);
2195 /* perform basic checks on the msg */
2196 ret = i40e_vc_validate_vf_msg(vf, v_opcode, v_retval, msg, msglen);
2197
2198 if (ret) {
2199 dev_err(&pf->pdev->dev, "Invalid message from VF %d, opcode %d, len %d\n",
2200 local_vf_id, v_opcode, msglen);
2201 return ret;
2202 }
2203
2204 switch (v_opcode) {
2205 case I40E_VIRTCHNL_OP_VERSION:
2206 ret = i40e_vc_get_version_msg(vf, msg);
2207 break;
2208 case I40E_VIRTCHNL_OP_GET_VF_RESOURCES:
2209 ret = i40e_vc_get_vf_resources_msg(vf, msg);
2210 break;
2211 case I40E_VIRTCHNL_OP_RESET_VF:
2212 i40e_vc_reset_vf_msg(vf);
2213 ret = 0;
2214 break;
2215 case I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE:
2216 ret = i40e_vc_config_promiscuous_mode_msg(vf, msg, msglen);
2217 break;
2218 case I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES:
2219 ret = i40e_vc_config_queues_msg(vf, msg, msglen);
2220 break;
2221 case I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP:
2222 ret = i40e_vc_config_irq_map_msg(vf, msg, msglen);
2223 break;
2224 case I40E_VIRTCHNL_OP_ENABLE_QUEUES:
2225 ret = i40e_vc_enable_queues_msg(vf, msg, msglen);
2226 i40e_vc_notify_vf_link_state(vf);
2227 break;
2228 case I40E_VIRTCHNL_OP_DISABLE_QUEUES:
2229 ret = i40e_vc_disable_queues_msg(vf, msg, msglen);
2230 break;
2231 case I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS:
2232 ret = i40e_vc_add_mac_addr_msg(vf, msg, msglen);
2233 break;
2234 case I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS:
2235 ret = i40e_vc_del_mac_addr_msg(vf, msg, msglen);
2236 break;
2237 case I40E_VIRTCHNL_OP_ADD_VLAN:
2238 ret = i40e_vc_add_vlan_msg(vf, msg, msglen);
2239 break;
2240 case I40E_VIRTCHNL_OP_DEL_VLAN:
2241 ret = i40e_vc_remove_vlan_msg(vf, msg, msglen);
2242 break;
2243 case I40E_VIRTCHNL_OP_GET_STATS:
2244 ret = i40e_vc_get_stats_msg(vf, msg, msglen);
2245 break;
2246 case I40E_VIRTCHNL_OP_IWARP:
2247 ret = i40e_vc_iwarp_msg(vf, msg, msglen);
2248 break;
2249 case I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
2250 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, true);
2251 break;
2252 case I40E_VIRTCHNL_OP_RELEASE_IWARP_IRQ_MAP:
2253 ret = i40e_vc_iwarp_qvmap_msg(vf, msg, msglen, false);
2254 break;
2255 case I40E_VIRTCHNL_OP_UNKNOWN:
2256 default:
2257 dev_err(&pf->pdev->dev, "Unsupported opcode %d from VF %d\n",
2258 v_opcode, local_vf_id);
2259 ret = i40e_vc_send_resp_to_vf(vf, v_opcode,
2260 I40E_ERR_NOT_IMPLEMENTED);
2261 break;
2262 }
2263
2264 return ret;
2265 }
2266
2267 /**
2268 * i40e_vc_process_vflr_event
2269 * @pf: pointer to the PF structure
2270 *
2271 * called from the vlfr irq handler to
2272 * free up VF resources and state variables
2273 **/
2274 int i40e_vc_process_vflr_event(struct i40e_pf *pf)
2275 {
2276 u32 reg, reg_idx, bit_idx, vf_id;
2277 struct i40e_hw *hw = &pf->hw;
2278 struct i40e_vf *vf;
2279
2280 if (!test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
2281 return 0;
2282
2283 /* Re-enable the VFLR interrupt cause here, before looking for which
2284 * VF got reset. Otherwise, if another VF gets a reset while the
2285 * first one is being processed, that interrupt will be lost, and
2286 * that VF will be stuck in reset forever.
2287 */
2288 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
2289 reg |= I40E_PFINT_ICR0_ENA_VFLR_MASK;
2290 wr32(hw, I40E_PFINT_ICR0_ENA, reg);
2291 i40e_flush(hw);
2292
2293 clear_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
2294 for (vf_id = 0; vf_id < pf->num_alloc_vfs; vf_id++) {
2295 reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32;
2296 bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32;
2297 /* read GLGEN_VFLRSTAT register to find out the flr VFs */
2298 vf = &pf->vf[vf_id];
2299 reg = rd32(hw, I40E_GLGEN_VFLRSTAT(reg_idx));
2300 if (reg & BIT(bit_idx)) {
2301 /* i40e_reset_vf will clear the bit in GLGEN_VFLRSTAT */
2302 if (!test_bit(__I40E_DOWN, &pf->state))
2303 i40e_reset_vf(vf, true);
2304 }
2305 }
2306
2307 return 0;
2308 }
2309
2310 /**
2311 * i40e_ndo_set_vf_mac
2312 * @netdev: network interface device structure
2313 * @vf_id: VF identifier
2314 * @mac: mac address
2315 *
2316 * program VF mac address
2317 **/
2318 int i40e_ndo_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac)
2319 {
2320 struct i40e_netdev_priv *np = netdev_priv(netdev);
2321 struct i40e_vsi *vsi = np->vsi;
2322 struct i40e_pf *pf = vsi->back;
2323 struct i40e_mac_filter *f;
2324 struct i40e_vf *vf;
2325 int ret = 0;
2326
2327 /* validate the request */
2328 if (vf_id >= pf->num_alloc_vfs) {
2329 dev_err(&pf->pdev->dev,
2330 "Invalid VF Identifier %d\n", vf_id);
2331 ret = -EINVAL;
2332 goto error_param;
2333 }
2334
2335 vf = &(pf->vf[vf_id]);
2336 vsi = pf->vsi[vf->lan_vsi_idx];
2337 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2338 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2339 vf_id);
2340 ret = -EAGAIN;
2341 goto error_param;
2342 }
2343
2344 if (is_multicast_ether_addr(mac)) {
2345 dev_err(&pf->pdev->dev,
2346 "Invalid Ethernet address %pM for VF %d\n", mac, vf_id);
2347 ret = -EINVAL;
2348 goto error_param;
2349 }
2350
2351 /* Lock once because below invoked function add/del_filter requires
2352 * mac_filter_list_lock to be held
2353 */
2354 spin_lock_bh(&vsi->mac_filter_list_lock);
2355
2356 /* delete the temporary mac address */
2357 if (!is_zero_ether_addr(vf->default_lan_addr.addr))
2358 i40e_del_filter(vsi, vf->default_lan_addr.addr,
2359 vf->port_vlan_id ? vf->port_vlan_id : -1,
2360 true, false);
2361
2362 /* Delete all the filters for this VSI - we're going to kill it
2363 * anyway.
2364 */
2365 list_for_each_entry(f, &vsi->mac_filter_list, list)
2366 i40e_del_filter(vsi, f->macaddr, f->vlan, true, false);
2367
2368 spin_unlock_bh(&vsi->mac_filter_list_lock);
2369
2370 dev_info(&pf->pdev->dev, "Setting MAC %pM on VF %d\n", mac, vf_id);
2371 /* program mac filter */
2372 if (i40e_sync_vsi_filters(vsi)) {
2373 dev_err(&pf->pdev->dev, "Unable to program ucast filters\n");
2374 ret = -EIO;
2375 goto error_param;
2376 }
2377 ether_addr_copy(vf->default_lan_addr.addr, mac);
2378 vf->pf_set_mac = true;
2379 /* Force the VF driver stop so it has to reload with new MAC address */
2380 i40e_vc_disable_vf(pf, vf);
2381 dev_info(&pf->pdev->dev, "Reload the VF driver to make this change effective.\n");
2382
2383 error_param:
2384 return ret;
2385 }
2386
2387 /**
2388 * i40e_ndo_set_vf_port_vlan
2389 * @netdev: network interface device structure
2390 * @vf_id: VF identifier
2391 * @vlan_id: mac address
2392 * @qos: priority setting
2393 *
2394 * program VF vlan id and/or qos
2395 **/
2396 int i40e_ndo_set_vf_port_vlan(struct net_device *netdev,
2397 int vf_id, u16 vlan_id, u8 qos)
2398 {
2399 u16 vlanprio = vlan_id | (qos << I40E_VLAN_PRIORITY_SHIFT);
2400 struct i40e_netdev_priv *np = netdev_priv(netdev);
2401 struct i40e_pf *pf = np->vsi->back;
2402 bool is_vsi_in_vlan = false;
2403 struct i40e_vsi *vsi;
2404 struct i40e_vf *vf;
2405 int ret = 0;
2406
2407 /* validate the request */
2408 if (vf_id >= pf->num_alloc_vfs) {
2409 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2410 ret = -EINVAL;
2411 goto error_pvid;
2412 }
2413
2414 if ((vlan_id > I40E_MAX_VLANID) || (qos > 7)) {
2415 dev_err(&pf->pdev->dev, "Invalid VF Parameters\n");
2416 ret = -EINVAL;
2417 goto error_pvid;
2418 }
2419
2420 vf = &(pf->vf[vf_id]);
2421 vsi = pf->vsi[vf->lan_vsi_idx];
2422 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2423 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2424 vf_id);
2425 ret = -EAGAIN;
2426 goto error_pvid;
2427 }
2428
2429 if (le16_to_cpu(vsi->info.pvid) == vlanprio)
2430 /* duplicate request, so just return success */
2431 goto error_pvid;
2432
2433 spin_lock_bh(&vsi->mac_filter_list_lock);
2434 is_vsi_in_vlan = i40e_is_vsi_in_vlan(vsi);
2435 spin_unlock_bh(&vsi->mac_filter_list_lock);
2436
2437 if (le16_to_cpu(vsi->info.pvid) == 0 && is_vsi_in_vlan) {
2438 dev_err(&pf->pdev->dev,
2439 "VF %d has already configured VLAN filters and the administrator is requesting a port VLAN override.\nPlease unload and reload the VF driver for this change to take effect.\n",
2440 vf_id);
2441 /* Administrator Error - knock the VF offline until he does
2442 * the right thing by reconfiguring his network correctly
2443 * and then reloading the VF driver.
2444 */
2445 i40e_vc_disable_vf(pf, vf);
2446 /* During reset the VF got a new VSI, so refresh the pointer. */
2447 vsi = pf->vsi[vf->lan_vsi_idx];
2448 }
2449
2450 /* Check for condition where there was already a port VLAN ID
2451 * filter set and now it is being deleted by setting it to zero.
2452 * Additionally check for the condition where there was a port
2453 * VLAN but now there is a new and different port VLAN being set.
2454 * Before deleting all the old VLAN filters we must add new ones
2455 * with -1 (I40E_VLAN_ANY) or otherwise we're left with all our
2456 * MAC addresses deleted.
2457 */
2458 if ((!(vlan_id || qos) ||
2459 vlanprio != le16_to_cpu(vsi->info.pvid)) &&
2460 vsi->info.pvid)
2461 ret = i40e_vsi_add_vlan(vsi, I40E_VLAN_ANY);
2462
2463 if (vsi->info.pvid) {
2464 /* kill old VLAN */
2465 ret = i40e_vsi_kill_vlan(vsi, (le16_to_cpu(vsi->info.pvid) &
2466 VLAN_VID_MASK));
2467 if (ret) {
2468 dev_info(&vsi->back->pdev->dev,
2469 "remove VLAN failed, ret=%d, aq_err=%d\n",
2470 ret, pf->hw.aq.asq_last_status);
2471 }
2472 }
2473 if (vlan_id || qos)
2474 ret = i40e_vsi_add_pvid(vsi, vlanprio);
2475 else
2476 i40e_vsi_remove_pvid(vsi);
2477
2478 if (vlan_id) {
2479 dev_info(&pf->pdev->dev, "Setting VLAN %d, QOS 0x%x on VF %d\n",
2480 vlan_id, qos, vf_id);
2481
2482 /* add new VLAN filter */
2483 ret = i40e_vsi_add_vlan(vsi, vlan_id);
2484 if (ret) {
2485 dev_info(&vsi->back->pdev->dev,
2486 "add VF VLAN failed, ret=%d aq_err=%d\n", ret,
2487 vsi->back->hw.aq.asq_last_status);
2488 goto error_pvid;
2489 }
2490 /* Kill non-vlan MAC filters - ignore error return since
2491 * there might not be any non-vlan MAC filters.
2492 */
2493 i40e_vsi_kill_vlan(vsi, I40E_VLAN_ANY);
2494 }
2495
2496 if (ret) {
2497 dev_err(&pf->pdev->dev, "Unable to update VF vsi context\n");
2498 goto error_pvid;
2499 }
2500 /* The Port VLAN needs to be saved across resets the same as the
2501 * default LAN MAC address.
2502 */
2503 vf->port_vlan_id = le16_to_cpu(vsi->info.pvid);
2504 ret = 0;
2505
2506 error_pvid:
2507 return ret;
2508 }
2509
2510 #define I40E_BW_CREDIT_DIVISOR 50 /* 50Mbps per BW credit */
2511 #define I40E_MAX_BW_INACTIVE_ACCUM 4 /* device can accumulate 4 credits max */
2512 /**
2513 * i40e_ndo_set_vf_bw
2514 * @netdev: network interface device structure
2515 * @vf_id: VF identifier
2516 * @tx_rate: Tx rate
2517 *
2518 * configure VF Tx rate
2519 **/
2520 int i40e_ndo_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,
2521 int max_tx_rate)
2522 {
2523 struct i40e_netdev_priv *np = netdev_priv(netdev);
2524 struct i40e_pf *pf = np->vsi->back;
2525 struct i40e_vsi *vsi;
2526 struct i40e_vf *vf;
2527 int speed = 0;
2528 int ret = 0;
2529
2530 /* validate the request */
2531 if (vf_id >= pf->num_alloc_vfs) {
2532 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d.\n", vf_id);
2533 ret = -EINVAL;
2534 goto error;
2535 }
2536
2537 if (min_tx_rate) {
2538 dev_err(&pf->pdev->dev, "Invalid min tx rate (%d) (greater than 0) specified for VF %d.\n",
2539 min_tx_rate, vf_id);
2540 return -EINVAL;
2541 }
2542
2543 vf = &(pf->vf[vf_id]);
2544 vsi = pf->vsi[vf->lan_vsi_idx];
2545 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2546 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2547 vf_id);
2548 ret = -EAGAIN;
2549 goto error;
2550 }
2551
2552 switch (pf->hw.phy.link_info.link_speed) {
2553 case I40E_LINK_SPEED_40GB:
2554 speed = 40000;
2555 break;
2556 case I40E_LINK_SPEED_20GB:
2557 speed = 20000;
2558 break;
2559 case I40E_LINK_SPEED_10GB:
2560 speed = 10000;
2561 break;
2562 case I40E_LINK_SPEED_1GB:
2563 speed = 1000;
2564 break;
2565 default:
2566 break;
2567 }
2568
2569 if (max_tx_rate > speed) {
2570 dev_err(&pf->pdev->dev, "Invalid max tx rate %d specified for VF %d.",
2571 max_tx_rate, vf->vf_id);
2572 ret = -EINVAL;
2573 goto error;
2574 }
2575
2576 if ((max_tx_rate < 50) && (max_tx_rate > 0)) {
2577 dev_warn(&pf->pdev->dev, "Setting max Tx rate to minimum usable value of 50Mbps.\n");
2578 max_tx_rate = 50;
2579 }
2580
2581 /* Tx rate credits are in values of 50Mbps, 0 is disabled*/
2582 ret = i40e_aq_config_vsi_bw_limit(&pf->hw, vsi->seid,
2583 max_tx_rate / I40E_BW_CREDIT_DIVISOR,
2584 I40E_MAX_BW_INACTIVE_ACCUM, NULL);
2585 if (ret) {
2586 dev_err(&pf->pdev->dev, "Unable to set max tx rate, error code %d.\n",
2587 ret);
2588 ret = -EIO;
2589 goto error;
2590 }
2591 vf->tx_rate = max_tx_rate;
2592 error:
2593 return ret;
2594 }
2595
2596 /**
2597 * i40e_ndo_get_vf_config
2598 * @netdev: network interface device structure
2599 * @vf_id: VF identifier
2600 * @ivi: VF configuration structure
2601 *
2602 * return VF configuration
2603 **/
2604 int i40e_ndo_get_vf_config(struct net_device *netdev,
2605 int vf_id, struct ifla_vf_info *ivi)
2606 {
2607 struct i40e_netdev_priv *np = netdev_priv(netdev);
2608 struct i40e_vsi *vsi = np->vsi;
2609 struct i40e_pf *pf = vsi->back;
2610 struct i40e_vf *vf;
2611 int ret = 0;
2612
2613 /* validate the request */
2614 if (vf_id >= pf->num_alloc_vfs) {
2615 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2616 ret = -EINVAL;
2617 goto error_param;
2618 }
2619
2620 vf = &(pf->vf[vf_id]);
2621 /* first vsi is always the LAN vsi */
2622 vsi = pf->vsi[vf->lan_vsi_idx];
2623 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2624 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2625 vf_id);
2626 ret = -EAGAIN;
2627 goto error_param;
2628 }
2629
2630 ivi->vf = vf_id;
2631
2632 ether_addr_copy(ivi->mac, vf->default_lan_addr.addr);
2633
2634 ivi->max_tx_rate = vf->tx_rate;
2635 ivi->min_tx_rate = 0;
2636 ivi->vlan = le16_to_cpu(vsi->info.pvid) & I40E_VLAN_MASK;
2637 ivi->qos = (le16_to_cpu(vsi->info.pvid) & I40E_PRIORITY_MASK) >>
2638 I40E_VLAN_PRIORITY_SHIFT;
2639 if (vf->link_forced == false)
2640 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
2641 else if (vf->link_up == true)
2642 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
2643 else
2644 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
2645 ivi->spoofchk = vf->spoofchk;
2646 ret = 0;
2647
2648 error_param:
2649 return ret;
2650 }
2651
2652 /**
2653 * i40e_ndo_set_vf_link_state
2654 * @netdev: network interface device structure
2655 * @vf_id: VF identifier
2656 * @link: required link state
2657 *
2658 * Set the link state of a specified VF, regardless of physical link state
2659 **/
2660 int i40e_ndo_set_vf_link_state(struct net_device *netdev, int vf_id, int link)
2661 {
2662 struct i40e_netdev_priv *np = netdev_priv(netdev);
2663 struct i40e_pf *pf = np->vsi->back;
2664 struct i40e_virtchnl_pf_event pfe;
2665 struct i40e_hw *hw = &pf->hw;
2666 struct i40e_vf *vf;
2667 int abs_vf_id;
2668 int ret = 0;
2669
2670 /* validate the request */
2671 if (vf_id >= pf->num_alloc_vfs) {
2672 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2673 ret = -EINVAL;
2674 goto error_out;
2675 }
2676
2677 vf = &pf->vf[vf_id];
2678 abs_vf_id = vf->vf_id + hw->func_caps.vf_base_id;
2679
2680 pfe.event = I40E_VIRTCHNL_EVENT_LINK_CHANGE;
2681 pfe.severity = I40E_PF_EVENT_SEVERITY_INFO;
2682
2683 switch (link) {
2684 case IFLA_VF_LINK_STATE_AUTO:
2685 vf->link_forced = false;
2686 pfe.event_data.link_event.link_status =
2687 pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP;
2688 pfe.event_data.link_event.link_speed =
2689 pf->hw.phy.link_info.link_speed;
2690 break;
2691 case IFLA_VF_LINK_STATE_ENABLE:
2692 vf->link_forced = true;
2693 vf->link_up = true;
2694 pfe.event_data.link_event.link_status = true;
2695 pfe.event_data.link_event.link_speed = I40E_LINK_SPEED_40GB;
2696 break;
2697 case IFLA_VF_LINK_STATE_DISABLE:
2698 vf->link_forced = true;
2699 vf->link_up = false;
2700 pfe.event_data.link_event.link_status = false;
2701 pfe.event_data.link_event.link_speed = 0;
2702 break;
2703 default:
2704 ret = -EINVAL;
2705 goto error_out;
2706 }
2707 /* Notify the VF of its new link state */
2708 i40e_aq_send_msg_to_vf(hw, abs_vf_id, I40E_VIRTCHNL_OP_EVENT,
2709 0, (u8 *)&pfe, sizeof(pfe), NULL);
2710
2711 error_out:
2712 return ret;
2713 }
2714
2715 /**
2716 * i40e_ndo_set_vf_spoofchk
2717 * @netdev: network interface device structure
2718 * @vf_id: VF identifier
2719 * @enable: flag to enable or disable feature
2720 *
2721 * Enable or disable VF spoof checking
2722 **/
2723 int i40e_ndo_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool enable)
2724 {
2725 struct i40e_netdev_priv *np = netdev_priv(netdev);
2726 struct i40e_vsi *vsi = np->vsi;
2727 struct i40e_pf *pf = vsi->back;
2728 struct i40e_vsi_context ctxt;
2729 struct i40e_hw *hw = &pf->hw;
2730 struct i40e_vf *vf;
2731 int ret = 0;
2732
2733 /* validate the request */
2734 if (vf_id >= pf->num_alloc_vfs) {
2735 dev_err(&pf->pdev->dev, "Invalid VF Identifier %d\n", vf_id);
2736 ret = -EINVAL;
2737 goto out;
2738 }
2739
2740 vf = &(pf->vf[vf_id]);
2741 if (!test_bit(I40E_VF_STAT_INIT, &vf->vf_states)) {
2742 dev_err(&pf->pdev->dev, "VF %d still in reset. Try again.\n",
2743 vf_id);
2744 ret = -EAGAIN;
2745 goto out;
2746 }
2747
2748 if (enable == vf->spoofchk)
2749 goto out;
2750
2751 vf->spoofchk = enable;
2752 memset(&ctxt, 0, sizeof(ctxt));
2753 ctxt.seid = pf->vsi[vf->lan_vsi_idx]->seid;
2754 ctxt.pf_num = pf->hw.pf_id;
2755 ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
2756 if (enable)
2757 ctxt.info.sec_flags |= (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
2758 I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
2759 ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
2760 if (ret) {
2761 dev_err(&pf->pdev->dev, "Error %d updating VSI parameters\n",
2762 ret);
2763 ret = -EIO;
2764 }
2765 out:
2766 return ret;
2767 }
Linux kernel - Deliverables
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