Loading...
1/* Broadcom NetXtreme-C/E network driver.
2 *
3 * Copyright (c) 2014-2016 Broadcom Corporation
4 * Copyright (c) 2016-2018 Broadcom Limited
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation.
9 */
10
11#include <linux/ethtool.h>
12#include <linux/module.h>
13#include <linux/pci.h>
14#include <linux/netdevice.h>
15#include <linux/if_vlan.h>
16#include <linux/interrupt.h>
17#include <linux/etherdevice.h>
18#include "bnxt_hsi.h"
19#include "bnxt.h"
20#include "bnxt_hwrm.h"
21#include "bnxt_ulp.h"
22#include "bnxt_sriov.h"
23#include "bnxt_vfr.h"
24#include "bnxt_ethtool.h"
25
26#ifdef CONFIG_BNXT_SRIOV
27static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
28 struct bnxt_vf_info *vf, u16 event_id)
29{
30 struct hwrm_fwd_async_event_cmpl_input *req;
31 struct hwrm_async_event_cmpl *async_cmpl;
32 int rc = 0;
33
34 rc = hwrm_req_init(bp, req, HWRM_FWD_ASYNC_EVENT_CMPL);
35 if (rc)
36 goto exit;
37
38 if (vf)
39 req->encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
40 else
41 /* broadcast this async event to all VFs */
42 req->encap_async_event_target_id = cpu_to_le16(0xffff);
43 async_cmpl =
44 (struct hwrm_async_event_cmpl *)req->encap_async_event_cmpl;
45 async_cmpl->type = cpu_to_le16(ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
46 async_cmpl->event_id = cpu_to_le16(event_id);
47
48 rc = hwrm_req_send(bp, req);
49exit:
50 if (rc)
51 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
52 rc);
53 return rc;
54}
55
56static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
57{
58 if (!bp->pf.active_vfs) {
59 netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
60 return -EINVAL;
61 }
62 if (vf_id >= bp->pf.active_vfs) {
63 netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
64 return -EINVAL;
65 }
66 return 0;
67}
68
69int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
70{
71 struct bnxt *bp = netdev_priv(dev);
72 struct hwrm_func_cfg_input *req;
73 bool old_setting = false;
74 struct bnxt_vf_info *vf;
75 u32 func_flags;
76 int rc;
77
78 if (bp->hwrm_spec_code < 0x10701)
79 return -ENOTSUPP;
80
81 rc = bnxt_vf_ndo_prep(bp, vf_id);
82 if (rc)
83 return rc;
84
85 vf = &bp->pf.vf[vf_id];
86 if (vf->flags & BNXT_VF_SPOOFCHK)
87 old_setting = true;
88 if (old_setting == setting)
89 return 0;
90
91 if (setting)
92 func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_ENABLE;
93 else
94 func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_DISABLE;
95 /*TODO: if the driver supports VLAN filter on guest VLAN,
96 * the spoof check should also include vlan anti-spoofing
97 */
98 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
99 if (!rc) {
100 req->fid = cpu_to_le16(vf->fw_fid);
101 req->flags = cpu_to_le32(func_flags);
102 rc = hwrm_req_send(bp, req);
103 if (!rc) {
104 if (setting)
105 vf->flags |= BNXT_VF_SPOOFCHK;
106 else
107 vf->flags &= ~BNXT_VF_SPOOFCHK;
108 }
109 }
110 return rc;
111}
112
113static int bnxt_hwrm_func_qcfg_flags(struct bnxt *bp, struct bnxt_vf_info *vf)
114{
115 struct hwrm_func_qcfg_output *resp;
116 struct hwrm_func_qcfg_input *req;
117 int rc;
118
119 rc = hwrm_req_init(bp, req, HWRM_FUNC_QCFG);
120 if (rc)
121 return rc;
122
123 req->fid = cpu_to_le16(BNXT_PF(bp) ? vf->fw_fid : 0xffff);
124 resp = hwrm_req_hold(bp, req);
125 rc = hwrm_req_send(bp, req);
126 if (!rc)
127 vf->func_qcfg_flags = le16_to_cpu(resp->flags);
128 hwrm_req_drop(bp, req);
129 return rc;
130}
131
132bool bnxt_is_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
133{
134 if (BNXT_PF(bp) && !(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
135 return !!(vf->flags & BNXT_VF_TRUST);
136
137 bnxt_hwrm_func_qcfg_flags(bp, vf);
138 return !!(vf->func_qcfg_flags & FUNC_QCFG_RESP_FLAGS_TRUSTED_VF);
139}
140
141static int bnxt_hwrm_set_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
142{
143 struct hwrm_func_cfg_input *req;
144 int rc;
145
146 if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
147 return 0;
148
149 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
150 if (rc)
151 return rc;
152
153 req->fid = cpu_to_le16(vf->fw_fid);
154 if (vf->flags & BNXT_VF_TRUST)
155 req->flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
156 else
157 req->flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_DISABLE);
158 return hwrm_req_send(bp, req);
159}
160
161int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
162{
163 struct bnxt *bp = netdev_priv(dev);
164 struct bnxt_vf_info *vf;
165
166 if (bnxt_vf_ndo_prep(bp, vf_id))
167 return -EINVAL;
168
169 vf = &bp->pf.vf[vf_id];
170 if (trusted)
171 vf->flags |= BNXT_VF_TRUST;
172 else
173 vf->flags &= ~BNXT_VF_TRUST;
174
175 bnxt_hwrm_set_trusted_vf(bp, vf);
176 return 0;
177}
178
179int bnxt_get_vf_config(struct net_device *dev, int vf_id,
180 struct ifla_vf_info *ivi)
181{
182 struct bnxt *bp = netdev_priv(dev);
183 struct bnxt_vf_info *vf;
184 int rc;
185
186 rc = bnxt_vf_ndo_prep(bp, vf_id);
187 if (rc)
188 return rc;
189
190 ivi->vf = vf_id;
191 vf = &bp->pf.vf[vf_id];
192
193 if (is_valid_ether_addr(vf->mac_addr))
194 memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
195 else
196 memcpy(&ivi->mac, vf->vf_mac_addr, ETH_ALEN);
197 ivi->max_tx_rate = vf->max_tx_rate;
198 ivi->min_tx_rate = vf->min_tx_rate;
199 ivi->vlan = vf->vlan;
200 if (vf->flags & BNXT_VF_QOS)
201 ivi->qos = vf->vlan >> VLAN_PRIO_SHIFT;
202 else
203 ivi->qos = 0;
204 ivi->spoofchk = !!(vf->flags & BNXT_VF_SPOOFCHK);
205 ivi->trusted = bnxt_is_trusted_vf(bp, vf);
206 if (!(vf->flags & BNXT_VF_LINK_FORCED))
207 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
208 else if (vf->flags & BNXT_VF_LINK_UP)
209 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
210 else
211 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
212
213 return 0;
214}
215
216int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
217{
218 struct bnxt *bp = netdev_priv(dev);
219 struct hwrm_func_cfg_input *req;
220 struct bnxt_vf_info *vf;
221 int rc;
222
223 rc = bnxt_vf_ndo_prep(bp, vf_id);
224 if (rc)
225 return rc;
226 /* reject bc or mc mac addr, zero mac addr means allow
227 * VF to use its own mac addr
228 */
229 if (is_multicast_ether_addr(mac)) {
230 netdev_err(dev, "Invalid VF ethernet address\n");
231 return -EINVAL;
232 }
233 vf = &bp->pf.vf[vf_id];
234
235 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
236 if (rc)
237 return rc;
238
239 memcpy(vf->mac_addr, mac, ETH_ALEN);
240
241 req->fid = cpu_to_le16(vf->fw_fid);
242 req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
243 memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
244 return hwrm_req_send(bp, req);
245}
246
247int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
248 __be16 vlan_proto)
249{
250 struct bnxt *bp = netdev_priv(dev);
251 struct hwrm_func_cfg_input *req;
252 struct bnxt_vf_info *vf;
253 u16 vlan_tag;
254 int rc;
255
256 if (bp->hwrm_spec_code < 0x10201)
257 return -ENOTSUPP;
258
259 if (vlan_proto != htons(ETH_P_8021Q))
260 return -EPROTONOSUPPORT;
261
262 rc = bnxt_vf_ndo_prep(bp, vf_id);
263 if (rc)
264 return rc;
265
266 /* TODO: needed to implement proper handling of user priority,
267 * currently fail the command if there is valid priority
268 */
269 if (vlan_id > 4095 || qos)
270 return -EINVAL;
271
272 vf = &bp->pf.vf[vf_id];
273 vlan_tag = vlan_id;
274 if (vlan_tag == vf->vlan)
275 return 0;
276
277 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
278 if (!rc) {
279 req->fid = cpu_to_le16(vf->fw_fid);
280 req->dflt_vlan = cpu_to_le16(vlan_tag);
281 req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
282 rc = hwrm_req_send(bp, req);
283 if (!rc)
284 vf->vlan = vlan_tag;
285 }
286 return rc;
287}
288
289int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
290 int max_tx_rate)
291{
292 struct bnxt *bp = netdev_priv(dev);
293 struct hwrm_func_cfg_input *req;
294 struct bnxt_vf_info *vf;
295 u32 pf_link_speed;
296 int rc;
297
298 rc = bnxt_vf_ndo_prep(bp, vf_id);
299 if (rc)
300 return rc;
301
302 vf = &bp->pf.vf[vf_id];
303 pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
304 if (max_tx_rate > pf_link_speed) {
305 netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
306 max_tx_rate, vf_id);
307 return -EINVAL;
308 }
309
310 if (min_tx_rate > pf_link_speed) {
311 netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
312 min_tx_rate, vf_id);
313 return -EINVAL;
314 }
315 if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
316 return 0;
317 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
318 if (!rc) {
319 req->fid = cpu_to_le16(vf->fw_fid);
320 req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW |
321 FUNC_CFG_REQ_ENABLES_MIN_BW);
322 req->max_bw = cpu_to_le32(max_tx_rate);
323 req->min_bw = cpu_to_le32(min_tx_rate);
324 rc = hwrm_req_send(bp, req);
325 if (!rc) {
326 vf->min_tx_rate = min_tx_rate;
327 vf->max_tx_rate = max_tx_rate;
328 }
329 }
330 return rc;
331}
332
333int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
334{
335 struct bnxt *bp = netdev_priv(dev);
336 struct bnxt_vf_info *vf;
337 int rc;
338
339 rc = bnxt_vf_ndo_prep(bp, vf_id);
340 if (rc)
341 return rc;
342
343 vf = &bp->pf.vf[vf_id];
344
345 vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
346 switch (link) {
347 case IFLA_VF_LINK_STATE_AUTO:
348 vf->flags |= BNXT_VF_LINK_UP;
349 break;
350 case IFLA_VF_LINK_STATE_DISABLE:
351 vf->flags |= BNXT_VF_LINK_FORCED;
352 break;
353 case IFLA_VF_LINK_STATE_ENABLE:
354 vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
355 break;
356 default:
357 netdev_err(bp->dev, "Invalid link option\n");
358 rc = -EINVAL;
359 break;
360 }
361 if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED))
362 rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf,
363 ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE);
364 return rc;
365}
366
367static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
368{
369 int i;
370 struct bnxt_vf_info *vf;
371
372 for (i = 0; i < num_vfs; i++) {
373 vf = &bp->pf.vf[i];
374 memset(vf, 0, sizeof(*vf));
375 }
376 return 0;
377}
378
379static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
380{
381 struct hwrm_func_vf_resc_free_input *req;
382 struct bnxt_pf_info *pf = &bp->pf;
383 int i, rc;
384
385 rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_RESC_FREE);
386 if (rc)
387 return rc;
388
389 hwrm_req_hold(bp, req);
390 for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
391 req->vf_id = cpu_to_le16(i);
392 rc = hwrm_req_send(bp, req);
393 if (rc)
394 break;
395 }
396 hwrm_req_drop(bp, req);
397 return rc;
398}
399
400static void bnxt_free_vf_resources(struct bnxt *bp)
401{
402 struct pci_dev *pdev = bp->pdev;
403 int i;
404
405 kfree(bp->pf.vf_event_bmap);
406 bp->pf.vf_event_bmap = NULL;
407
408 for (i = 0; i < 4; i++) {
409 if (bp->pf.hwrm_cmd_req_addr[i]) {
410 dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
411 bp->pf.hwrm_cmd_req_addr[i],
412 bp->pf.hwrm_cmd_req_dma_addr[i]);
413 bp->pf.hwrm_cmd_req_addr[i] = NULL;
414 }
415 }
416
417 bp->pf.active_vfs = 0;
418 kfree(bp->pf.vf);
419 bp->pf.vf = NULL;
420}
421
422static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
423{
424 struct pci_dev *pdev = bp->pdev;
425 u32 nr_pages, size, i, j, k = 0;
426
427 bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
428 if (!bp->pf.vf)
429 return -ENOMEM;
430
431 bnxt_set_vf_attr(bp, num_vfs);
432
433 size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
434 nr_pages = size / BNXT_PAGE_SIZE;
435 if (size & (BNXT_PAGE_SIZE - 1))
436 nr_pages++;
437
438 for (i = 0; i < nr_pages; i++) {
439 bp->pf.hwrm_cmd_req_addr[i] =
440 dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
441 &bp->pf.hwrm_cmd_req_dma_addr[i],
442 GFP_KERNEL);
443
444 if (!bp->pf.hwrm_cmd_req_addr[i])
445 return -ENOMEM;
446
447 for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
448 struct bnxt_vf_info *vf = &bp->pf.vf[k];
449
450 vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
451 j * BNXT_HWRM_REQ_MAX_SIZE;
452 vf->hwrm_cmd_req_dma_addr =
453 bp->pf.hwrm_cmd_req_dma_addr[i] + j *
454 BNXT_HWRM_REQ_MAX_SIZE;
455 k++;
456 }
457 }
458
459 /* Max 128 VF's */
460 bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
461 if (!bp->pf.vf_event_bmap)
462 return -ENOMEM;
463
464 bp->pf.hwrm_cmd_req_pages = nr_pages;
465 return 0;
466}
467
468static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
469{
470 struct hwrm_func_buf_rgtr_input *req;
471 int rc;
472
473 rc = hwrm_req_init(bp, req, HWRM_FUNC_BUF_RGTR);
474 if (rc)
475 return rc;
476
477 req->req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
478 req->req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
479 req->req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
480 req->req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
481 req->req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
482 req->req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
483 req->req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
484
485 return hwrm_req_send(bp, req);
486}
487
488static int __bnxt_set_vf_params(struct bnxt *bp, int vf_id)
489{
490 struct hwrm_func_cfg_input *req;
491 struct bnxt_vf_info *vf;
492 int rc;
493
494 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
495 if (rc)
496 return rc;
497
498 vf = &bp->pf.vf[vf_id];
499 req->fid = cpu_to_le16(vf->fw_fid);
500
501 if (is_valid_ether_addr(vf->mac_addr)) {
502 req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
503 memcpy(req->dflt_mac_addr, vf->mac_addr, ETH_ALEN);
504 }
505 if (vf->vlan) {
506 req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
507 req->dflt_vlan = cpu_to_le16(vf->vlan);
508 }
509 if (vf->max_tx_rate) {
510 req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW |
511 FUNC_CFG_REQ_ENABLES_MIN_BW);
512 req->max_bw = cpu_to_le32(vf->max_tx_rate);
513 req->min_bw = cpu_to_le32(vf->min_tx_rate);
514 }
515 if (vf->flags & BNXT_VF_TRUST)
516 req->flags |= cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
517
518 return hwrm_req_send(bp, req);
519}
520
521/* Only called by PF to reserve resources for VFs, returns actual number of
522 * VFs configured, or < 0 on error.
523 */
524static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
525{
526 struct hwrm_func_vf_resource_cfg_input *req;
527 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
528 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings;
529 u16 vf_stat_ctx, vf_vnics, vf_ring_grps;
530 struct bnxt_pf_info *pf = &bp->pf;
531 int i, rc = 0, min = 1;
532 u16 vf_msix = 0;
533 u16 vf_rss;
534
535 rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_RESOURCE_CFG);
536 if (rc)
537 return rc;
538
539 if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS) {
540 vf_msix = hw_resc->max_nqs - bnxt_nq_rings_in_use(bp);
541 vf_ring_grps = 0;
542 } else {
543 vf_ring_grps = hw_resc->max_hw_ring_grps - bp->rx_nr_rings;
544 }
545 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp);
546 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp);
547 if (bp->flags & BNXT_FLAG_AGG_RINGS)
548 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
549 else
550 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings;
551 vf_tx_rings = hw_resc->max_tx_rings - bp->tx_nr_rings;
552 vf_vnics = hw_resc->max_vnics - bp->nr_vnics;
553 vf_rss = hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs;
554
555 req->min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
556 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
557 min = 0;
558 req->min_rsscos_ctx = cpu_to_le16(min);
559 }
560 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
561 pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
562 req->min_cmpl_rings = cpu_to_le16(min);
563 req->min_tx_rings = cpu_to_le16(min);
564 req->min_rx_rings = cpu_to_le16(min);
565 req->min_l2_ctxs = cpu_to_le16(min);
566 req->min_vnics = cpu_to_le16(min);
567 req->min_stat_ctx = cpu_to_le16(min);
568 if (!(bp->flags & BNXT_FLAG_CHIP_P5_PLUS))
569 req->min_hw_ring_grps = cpu_to_le16(min);
570 } else {
571 vf_cp_rings /= num_vfs;
572 vf_tx_rings /= num_vfs;
573 vf_rx_rings /= num_vfs;
574 if ((bp->fw_cap & BNXT_FW_CAP_PRE_RESV_VNICS) &&
575 vf_vnics >= pf->max_vfs) {
576 /* Take into account that FW has pre-reserved 1 VNIC for
577 * each pf->max_vfs.
578 */
579 vf_vnics = (vf_vnics - pf->max_vfs + num_vfs) / num_vfs;
580 } else {
581 vf_vnics /= num_vfs;
582 }
583 vf_stat_ctx /= num_vfs;
584 vf_ring_grps /= num_vfs;
585 vf_rss /= num_vfs;
586
587 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
588 req->min_cmpl_rings = cpu_to_le16(vf_cp_rings);
589 req->min_tx_rings = cpu_to_le16(vf_tx_rings);
590 req->min_rx_rings = cpu_to_le16(vf_rx_rings);
591 req->min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
592 req->min_vnics = cpu_to_le16(vf_vnics);
593 req->min_stat_ctx = cpu_to_le16(vf_stat_ctx);
594 req->min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
595 req->min_rsscos_ctx = cpu_to_le16(vf_rss);
596 }
597 req->max_cmpl_rings = cpu_to_le16(vf_cp_rings);
598 req->max_tx_rings = cpu_to_le16(vf_tx_rings);
599 req->max_rx_rings = cpu_to_le16(vf_rx_rings);
600 req->max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
601 req->max_vnics = cpu_to_le16(vf_vnics);
602 req->max_stat_ctx = cpu_to_le16(vf_stat_ctx);
603 req->max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
604 req->max_rsscos_ctx = cpu_to_le16(vf_rss);
605 if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS)
606 req->max_msix = cpu_to_le16(vf_msix / num_vfs);
607
608 hwrm_req_hold(bp, req);
609 for (i = 0; i < num_vfs; i++) {
610 if (reset)
611 __bnxt_set_vf_params(bp, i);
612
613 req->vf_id = cpu_to_le16(pf->first_vf_id + i);
614 rc = hwrm_req_send(bp, req);
615 if (rc)
616 break;
617 pf->active_vfs = i + 1;
618 pf->vf[i].fw_fid = pf->first_vf_id + i;
619 }
620
621 if (pf->active_vfs) {
622 u16 n = pf->active_vfs;
623
624 hw_resc->max_tx_rings -= le16_to_cpu(req->min_tx_rings) * n;
625 hw_resc->max_rx_rings -= le16_to_cpu(req->min_rx_rings) * n;
626 hw_resc->max_hw_ring_grps -=
627 le16_to_cpu(req->min_hw_ring_grps) * n;
628 hw_resc->max_cp_rings -= le16_to_cpu(req->min_cmpl_rings) * n;
629 hw_resc->max_rsscos_ctxs -=
630 le16_to_cpu(req->min_rsscos_ctx) * n;
631 hw_resc->max_stat_ctxs -= le16_to_cpu(req->min_stat_ctx) * n;
632 hw_resc->max_vnics -= le16_to_cpu(req->min_vnics) * n;
633 if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS)
634 hw_resc->max_nqs -= vf_msix;
635
636 rc = pf->active_vfs;
637 }
638 hwrm_req_drop(bp, req);
639 return rc;
640}
641
642/* Only called by PF to reserve resources for VFs, returns actual number of
643 * VFs configured, or < 0 on error.
644 */
645static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
646{
647 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
648 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
649 struct bnxt_pf_info *pf = &bp->pf;
650 struct hwrm_func_cfg_input *req;
651 int total_vf_tx_rings = 0;
652 u16 vf_ring_grps;
653 u32 mtu, i;
654 int rc;
655
656 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
657 if (rc)
658 return rc;
659
660 /* Remaining rings are distributed equally amongs VF's for now */
661 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
662 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp) / num_vfs;
663 if (bp->flags & BNXT_FLAG_AGG_RINGS)
664 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
665 num_vfs;
666 else
667 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
668 num_vfs;
669 vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
670 vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
671 vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
672 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
673
674 req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_MTU |
675 FUNC_CFG_REQ_ENABLES_MRU |
676 FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
677 FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
678 FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
679 FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
680 FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
681 FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
682 FUNC_CFG_REQ_ENABLES_NUM_VNICS |
683 FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
684
685 mtu = bp->dev->mtu + ETH_HLEN + VLAN_HLEN;
686 req->mru = cpu_to_le16(mtu);
687 req->admin_mtu = cpu_to_le16(mtu);
688
689 req->num_rsscos_ctxs = cpu_to_le16(1);
690 req->num_cmpl_rings = cpu_to_le16(vf_cp_rings);
691 req->num_tx_rings = cpu_to_le16(vf_tx_rings);
692 req->num_rx_rings = cpu_to_le16(vf_rx_rings);
693 req->num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
694 req->num_l2_ctxs = cpu_to_le16(4);
695
696 req->num_vnics = cpu_to_le16(vf_vnics);
697 /* FIXME spec currently uses 1 bit for stats ctx */
698 req->num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
699
700 hwrm_req_hold(bp, req);
701 for (i = 0; i < num_vfs; i++) {
702 int vf_tx_rsvd = vf_tx_rings;
703
704 req->fid = cpu_to_le16(pf->first_vf_id + i);
705 rc = hwrm_req_send(bp, req);
706 if (rc)
707 break;
708 pf->active_vfs = i + 1;
709 pf->vf[i].fw_fid = le16_to_cpu(req->fid);
710 rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
711 &vf_tx_rsvd);
712 if (rc)
713 break;
714 total_vf_tx_rings += vf_tx_rsvd;
715 }
716 hwrm_req_drop(bp, req);
717 if (pf->active_vfs) {
718 hw_resc->max_tx_rings -= total_vf_tx_rings;
719 hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
720 hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
721 hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
722 hw_resc->max_rsscos_ctxs -= num_vfs;
723 hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
724 hw_resc->max_vnics -= vf_vnics * num_vfs;
725 rc = pf->active_vfs;
726 }
727 return rc;
728}
729
730static int bnxt_func_cfg(struct bnxt *bp, int num_vfs, bool reset)
731{
732 if (BNXT_NEW_RM(bp))
733 return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs, reset);
734 else
735 return bnxt_hwrm_func_cfg(bp, num_vfs);
736}
737
738int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
739{
740 int rc;
741
742 /* Register buffers for VFs */
743 rc = bnxt_hwrm_func_buf_rgtr(bp);
744 if (rc)
745 return rc;
746
747 /* Reserve resources for VFs */
748 rc = bnxt_func_cfg(bp, *num_vfs, reset);
749 if (rc != *num_vfs) {
750 if (rc <= 0) {
751 netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
752 *num_vfs = 0;
753 return rc;
754 }
755 netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n",
756 rc);
757 *num_vfs = rc;
758 }
759
760 return 0;
761}
762
763static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
764{
765 int rc = 0, vfs_supported;
766 int min_rx_rings, min_tx_rings, min_rss_ctxs;
767 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
768 int tx_ok = 0, rx_ok = 0, rss_ok = 0;
769 int avail_cp, avail_stat;
770
771 /* Check if we can enable requested num of vf's. At a mininum
772 * we require 1 RX 1 TX rings for each VF. In this minimum conf
773 * features like TPA will not be available.
774 */
775 vfs_supported = *num_vfs;
776
777 avail_cp = bnxt_get_avail_cp_rings_for_en(bp);
778 avail_stat = bnxt_get_avail_stat_ctxs_for_en(bp);
779 avail_cp = min_t(int, avail_cp, avail_stat);
780
781 while (vfs_supported) {
782 min_rx_rings = vfs_supported;
783 min_tx_rings = vfs_supported;
784 min_rss_ctxs = vfs_supported;
785
786 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
787 if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
788 min_rx_rings)
789 rx_ok = 1;
790 } else {
791 if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
792 min_rx_rings)
793 rx_ok = 1;
794 }
795 if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
796 avail_cp < min_rx_rings)
797 rx_ok = 0;
798
799 if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
800 avail_cp >= min_tx_rings)
801 tx_ok = 1;
802
803 if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
804 min_rss_ctxs)
805 rss_ok = 1;
806
807 if (tx_ok && rx_ok && rss_ok)
808 break;
809
810 vfs_supported--;
811 }
812
813 if (!vfs_supported) {
814 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
815 return -EINVAL;
816 }
817
818 if (vfs_supported != *num_vfs) {
819 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
820 *num_vfs, vfs_supported);
821 *num_vfs = vfs_supported;
822 }
823
824 rc = bnxt_alloc_vf_resources(bp, *num_vfs);
825 if (rc)
826 goto err_out1;
827
828 rc = bnxt_cfg_hw_sriov(bp, num_vfs, false);
829 if (rc)
830 goto err_out2;
831
832 rc = pci_enable_sriov(bp->pdev, *num_vfs);
833 if (rc)
834 goto err_out2;
835
836 if (bp->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV)
837 return 0;
838
839 /* Create representors for VFs in switchdev mode */
840 devl_lock(bp->dl);
841 rc = bnxt_vf_reps_create(bp);
842 devl_unlock(bp->dl);
843 if (rc) {
844 netdev_info(bp->dev, "Cannot enable VFS as representors cannot be created\n");
845 goto err_out3;
846 }
847
848 return 0;
849
850err_out3:
851 /* Disable SR-IOV */
852 pci_disable_sriov(bp->pdev);
853
854err_out2:
855 /* Free the resources reserved for various VF's */
856 bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
857
858 /* Restore the max resources */
859 bnxt_hwrm_func_qcaps(bp);
860
861err_out1:
862 bnxt_free_vf_resources(bp);
863
864 return rc;
865}
866
867void bnxt_sriov_disable(struct bnxt *bp)
868{
869 u16 num_vfs = pci_num_vf(bp->pdev);
870
871 if (!num_vfs)
872 return;
873
874 /* synchronize VF and VF-rep create and destroy */
875 devl_lock(bp->dl);
876 bnxt_vf_reps_destroy(bp);
877
878 if (pci_vfs_assigned(bp->pdev)) {
879 bnxt_hwrm_fwd_async_event_cmpl(
880 bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
881 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
882 num_vfs);
883 } else {
884 pci_disable_sriov(bp->pdev);
885 /* Free the HW resources reserved for various VF's */
886 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
887 }
888 devl_unlock(bp->dl);
889
890 bnxt_free_vf_resources(bp);
891
892 /* Reclaim all resources for the PF. */
893 rtnl_lock();
894 bnxt_restore_pf_fw_resources(bp);
895 rtnl_unlock();
896}
897
898int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
899{
900 struct net_device *dev = pci_get_drvdata(pdev);
901 struct bnxt *bp = netdev_priv(dev);
902
903 if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
904 netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
905 return 0;
906 }
907
908 rtnl_lock();
909 if (!netif_running(dev)) {
910 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
911 rtnl_unlock();
912 return 0;
913 }
914 if (test_bit(BNXT_STATE_IN_FW_RESET, &bp->state)) {
915 netdev_warn(dev, "Reject SRIOV config request when FW reset is in progress\n");
916 rtnl_unlock();
917 return 0;
918 }
919 bp->sriov_cfg = true;
920 rtnl_unlock();
921
922 if (pci_vfs_assigned(bp->pdev)) {
923 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
924 num_vfs = 0;
925 goto sriov_cfg_exit;
926 }
927
928 /* Check if enabled VFs is same as requested */
929 if (num_vfs && num_vfs == bp->pf.active_vfs)
930 goto sriov_cfg_exit;
931
932 /* if there are previous existing VFs, clean them up */
933 bnxt_sriov_disable(bp);
934 if (!num_vfs)
935 goto sriov_cfg_exit;
936
937 bnxt_sriov_enable(bp, &num_vfs);
938
939sriov_cfg_exit:
940 bp->sriov_cfg = false;
941 wake_up(&bp->sriov_cfg_wait);
942
943 return num_vfs;
944}
945
946static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
947 void *encap_resp, __le64 encap_resp_addr,
948 __le16 encap_resp_cpr, u32 msg_size)
949{
950 struct hwrm_fwd_resp_input *req;
951 int rc;
952
953 if (BNXT_FWD_RESP_SIZE_ERR(msg_size))
954 return -EINVAL;
955
956 rc = hwrm_req_init(bp, req, HWRM_FWD_RESP);
957 if (!rc) {
958 /* Set the new target id */
959 req->target_id = cpu_to_le16(vf->fw_fid);
960 req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
961 req->encap_resp_len = cpu_to_le16(msg_size);
962 req->encap_resp_addr = encap_resp_addr;
963 req->encap_resp_cmpl_ring = encap_resp_cpr;
964 memcpy(req->encap_resp, encap_resp, msg_size);
965
966 rc = hwrm_req_send(bp, req);
967 }
968 if (rc)
969 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
970 return rc;
971}
972
973static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
974 u32 msg_size)
975{
976 struct hwrm_reject_fwd_resp_input *req;
977 int rc;
978
979 if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
980 return -EINVAL;
981
982 rc = hwrm_req_init(bp, req, HWRM_REJECT_FWD_RESP);
983 if (!rc) {
984 /* Set the new target id */
985 req->target_id = cpu_to_le16(vf->fw_fid);
986 req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
987 memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);
988
989 rc = hwrm_req_send(bp, req);
990 }
991 if (rc)
992 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
993 return rc;
994}
995
996static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
997 u32 msg_size)
998{
999 struct hwrm_exec_fwd_resp_input *req;
1000 int rc;
1001
1002 if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
1003 return -EINVAL;
1004
1005 rc = hwrm_req_init(bp, req, HWRM_EXEC_FWD_RESP);
1006 if (!rc) {
1007 /* Set the new target id */
1008 req->target_id = cpu_to_le16(vf->fw_fid);
1009 req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
1010 memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);
1011
1012 rc = hwrm_req_send(bp, req);
1013 }
1014 if (rc)
1015 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
1016 return rc;
1017}
1018
1019static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
1020{
1021 u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
1022 struct hwrm_func_vf_cfg_input *req =
1023 (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;
1024
1025 /* Allow VF to set a valid MAC address, if trust is set to on or
1026 * if the PF assigned MAC address is zero
1027 */
1028 if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
1029 bool trust = bnxt_is_trusted_vf(bp, vf);
1030
1031 if (is_valid_ether_addr(req->dflt_mac_addr) &&
1032 (trust || !is_valid_ether_addr(vf->mac_addr) ||
1033 ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
1034 ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
1035 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1036 }
1037 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1038 }
1039 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1040}
1041
1042static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
1043{
1044 u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
1045 struct hwrm_cfa_l2_filter_alloc_input *req =
1046 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
1047 bool mac_ok = false;
1048
1049 if (!is_valid_ether_addr((const u8 *)req->l2_addr))
1050 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1051
1052 /* Allow VF to set a valid MAC address, if trust is set to on.
1053 * Or VF MAC address must first match MAC address in PF's context.
1054 * Otherwise, it must match the VF MAC address if firmware spec >=
1055 * 1.2.2
1056 */
1057 if (bnxt_is_trusted_vf(bp, vf)) {
1058 mac_ok = true;
1059 } else if (is_valid_ether_addr(vf->mac_addr)) {
1060 if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
1061 mac_ok = true;
1062 } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
1063 if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
1064 mac_ok = true;
1065 } else {
1066 /* There are two cases:
1067 * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
1068 * to the PF and so it doesn't have to match
1069 * 2.Allow VF to modify it's own MAC when PF has not assigned a
1070 * valid MAC address and firmware spec >= 0x10202
1071 */
1072 mac_ok = true;
1073 }
1074 if (mac_ok)
1075 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1076 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1077}
1078
1079static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
1080{
1081 int rc = 0;
1082
1083 if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
1084 /* real link */
1085 rc = bnxt_hwrm_exec_fwd_resp(
1086 bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
1087 } else {
1088 struct hwrm_port_phy_qcfg_output phy_qcfg_resp = {0};
1089 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
1090
1091 phy_qcfg_req =
1092 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
1093 mutex_lock(&bp->link_lock);
1094 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
1095 sizeof(phy_qcfg_resp));
1096 mutex_unlock(&bp->link_lock);
1097 phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
1098 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
1099 phy_qcfg_resp.valid = 1;
1100
1101 if (vf->flags & BNXT_VF_LINK_UP) {
1102 /* if physical link is down, force link up on VF */
1103 if (phy_qcfg_resp.link !=
1104 PORT_PHY_QCFG_RESP_LINK_LINK) {
1105 phy_qcfg_resp.link =
1106 PORT_PHY_QCFG_RESP_LINK_LINK;
1107 phy_qcfg_resp.link_speed = cpu_to_le16(
1108 PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
1109 phy_qcfg_resp.duplex_cfg =
1110 PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
1111 phy_qcfg_resp.duplex_state =
1112 PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
1113 phy_qcfg_resp.pause =
1114 (PORT_PHY_QCFG_RESP_PAUSE_TX |
1115 PORT_PHY_QCFG_RESP_PAUSE_RX);
1116 }
1117 } else {
1118 /* force link down */
1119 phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
1120 phy_qcfg_resp.link_speed = 0;
1121 phy_qcfg_resp.duplex_state =
1122 PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
1123 phy_qcfg_resp.pause = 0;
1124 }
1125 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
1126 phy_qcfg_req->resp_addr,
1127 phy_qcfg_req->cmpl_ring,
1128 sizeof(phy_qcfg_resp));
1129 }
1130 return rc;
1131}
1132
1133static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
1134{
1135 int rc = 0;
1136 struct input *encap_req = vf->hwrm_cmd_req_addr;
1137 u32 req_type = le16_to_cpu(encap_req->req_type);
1138
1139 switch (req_type) {
1140 case HWRM_FUNC_VF_CFG:
1141 rc = bnxt_vf_configure_mac(bp, vf);
1142 break;
1143 case HWRM_CFA_L2_FILTER_ALLOC:
1144 rc = bnxt_vf_validate_set_mac(bp, vf);
1145 break;
1146 case HWRM_FUNC_CFG:
1147 /* TODO Validate if VF is allowed to change mac address,
1148 * mtu, num of rings etc
1149 */
1150 rc = bnxt_hwrm_exec_fwd_resp(
1151 bp, vf, sizeof(struct hwrm_func_cfg_input));
1152 break;
1153 case HWRM_PORT_PHY_QCFG:
1154 rc = bnxt_vf_set_link(bp, vf);
1155 break;
1156 default:
1157 break;
1158 }
1159 return rc;
1160}
1161
1162void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1163{
1164 u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
1165
1166 /* Scan through VF's and process commands */
1167 while (1) {
1168 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
1169 if (vf_id >= active_vfs)
1170 break;
1171
1172 clear_bit(vf_id, bp->pf.vf_event_bmap);
1173 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
1174 i = vf_id + 1;
1175 }
1176}
1177
1178int bnxt_approve_mac(struct bnxt *bp, const u8 *mac, bool strict)
1179{
1180 struct hwrm_func_vf_cfg_input *req;
1181 int rc = 0;
1182
1183 if (!BNXT_VF(bp))
1184 return 0;
1185
1186 if (bp->hwrm_spec_code < 0x10202) {
1187 if (is_valid_ether_addr(bp->vf.mac_addr))
1188 rc = -EADDRNOTAVAIL;
1189 goto mac_done;
1190 }
1191
1192 rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_CFG);
1193 if (rc)
1194 goto mac_done;
1195
1196 req->enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
1197 memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
1198 if (!strict)
1199 hwrm_req_flags(bp, req, BNXT_HWRM_CTX_SILENT);
1200 rc = hwrm_req_send(bp, req);
1201mac_done:
1202 if (rc && strict) {
1203 rc = -EADDRNOTAVAIL;
1204 netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
1205 mac);
1206 return rc;
1207 }
1208 return 0;
1209}
1210
1211void bnxt_update_vf_mac(struct bnxt *bp)
1212{
1213 struct hwrm_func_qcaps_output *resp;
1214 struct hwrm_func_qcaps_input *req;
1215 bool inform_pf = false;
1216
1217 if (hwrm_req_init(bp, req, HWRM_FUNC_QCAPS))
1218 return;
1219
1220 req->fid = cpu_to_le16(0xffff);
1221
1222 resp = hwrm_req_hold(bp, req);
1223 if (hwrm_req_send(bp, req))
1224 goto update_vf_mac_exit;
1225
1226 /* Store MAC address from the firmware. There are 2 cases:
1227 * 1. MAC address is valid. It is assigned from the PF and we
1228 * need to override the current VF MAC address with it.
1229 * 2. MAC address is zero. The VF will use a random MAC address by
1230 * default but the stored zero MAC will allow the VF user to change
1231 * the random MAC address using ndo_set_mac_address() if he wants.
1232 */
1233 if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr)) {
1234 memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
1235 /* This means we are now using our own MAC address, let
1236 * the PF know about this MAC address.
1237 */
1238 if (!is_valid_ether_addr(bp->vf.mac_addr))
1239 inform_pf = true;
1240 }
1241
1242 /* overwrite netdev dev_addr with admin VF MAC */
1243 if (is_valid_ether_addr(bp->vf.mac_addr))
1244 eth_hw_addr_set(bp->dev, bp->vf.mac_addr);
1245update_vf_mac_exit:
1246 hwrm_req_drop(bp, req);
1247 if (inform_pf)
1248 bnxt_approve_mac(bp, bp->dev->dev_addr, false);
1249}
1250
1251#else
1252
1253int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
1254{
1255 if (*num_vfs)
1256 return -EOPNOTSUPP;
1257 return 0;
1258}
1259
1260void bnxt_sriov_disable(struct bnxt *bp)
1261{
1262}
1263
1264void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1265{
1266 netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
1267}
1268
1269void bnxt_update_vf_mac(struct bnxt *bp)
1270{
1271}
1272
1273int bnxt_approve_mac(struct bnxt *bp, const u8 *mac, bool strict)
1274{
1275 return 0;
1276}
1277#endif
1/* Broadcom NetXtreme-C/E network driver.
2 *
3 * Copyright (c) 2014-2016 Broadcom Corporation
4 * Copyright (c) 2016-2018 Broadcom Limited
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation.
9 */
10
11#include <linux/ethtool.h>
12#include <linux/module.h>
13#include <linux/pci.h>
14#include <linux/netdevice.h>
15#include <linux/if_vlan.h>
16#include <linux/interrupt.h>
17#include <linux/etherdevice.h>
18#include <net/dcbnl.h>
19#include "bnxt_hsi.h"
20#include "bnxt.h"
21#include "bnxt_hwrm.h"
22#include "bnxt_ulp.h"
23#include "bnxt_sriov.h"
24#include "bnxt_vfr.h"
25#include "bnxt_ethtool.h"
26
27#ifdef CONFIG_BNXT_SRIOV
28static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
29 struct bnxt_vf_info *vf, u16 event_id)
30{
31 struct hwrm_fwd_async_event_cmpl_input *req;
32 struct hwrm_async_event_cmpl *async_cmpl;
33 int rc = 0;
34
35 rc = hwrm_req_init(bp, req, HWRM_FWD_ASYNC_EVENT_CMPL);
36 if (rc)
37 goto exit;
38
39 if (vf)
40 req->encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
41 else
42 /* broadcast this async event to all VFs */
43 req->encap_async_event_target_id = cpu_to_le16(0xffff);
44 async_cmpl =
45 (struct hwrm_async_event_cmpl *)req->encap_async_event_cmpl;
46 async_cmpl->type = cpu_to_le16(ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
47 async_cmpl->event_id = cpu_to_le16(event_id);
48
49 rc = hwrm_req_send(bp, req);
50exit:
51 if (rc)
52 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
53 rc);
54 return rc;
55}
56
57static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
58{
59 if (!bp->pf.active_vfs) {
60 netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
61 return -EINVAL;
62 }
63 if (vf_id >= bp->pf.active_vfs) {
64 netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
65 return -EINVAL;
66 }
67 return 0;
68}
69
70int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
71{
72 struct bnxt *bp = netdev_priv(dev);
73 struct hwrm_func_cfg_input *req;
74 bool old_setting = false;
75 struct bnxt_vf_info *vf;
76 u32 func_flags;
77 int rc;
78
79 if (bp->hwrm_spec_code < 0x10701)
80 return -ENOTSUPP;
81
82 rc = bnxt_vf_ndo_prep(bp, vf_id);
83 if (rc)
84 return rc;
85
86 vf = &bp->pf.vf[vf_id];
87 if (vf->flags & BNXT_VF_SPOOFCHK)
88 old_setting = true;
89 if (old_setting == setting)
90 return 0;
91
92 if (setting)
93 func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_ENABLE;
94 else
95 func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_DISABLE;
96 /*TODO: if the driver supports VLAN filter on guest VLAN,
97 * the spoof check should also include vlan anti-spoofing
98 */
99 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
100 if (!rc) {
101 req->fid = cpu_to_le16(vf->fw_fid);
102 req->flags = cpu_to_le32(func_flags);
103 rc = hwrm_req_send(bp, req);
104 if (!rc) {
105 if (setting)
106 vf->flags |= BNXT_VF_SPOOFCHK;
107 else
108 vf->flags &= ~BNXT_VF_SPOOFCHK;
109 }
110 }
111 return rc;
112}
113
114static int bnxt_hwrm_func_qcfg_flags(struct bnxt *bp, struct bnxt_vf_info *vf)
115{
116 struct hwrm_func_qcfg_output *resp;
117 struct hwrm_func_qcfg_input *req;
118 int rc;
119
120 rc = hwrm_req_init(bp, req, HWRM_FUNC_QCFG);
121 if (rc)
122 return rc;
123
124 req->fid = cpu_to_le16(BNXT_PF(bp) ? vf->fw_fid : 0xffff);
125 resp = hwrm_req_hold(bp, req);
126 rc = hwrm_req_send(bp, req);
127 if (!rc)
128 vf->func_qcfg_flags = le16_to_cpu(resp->flags);
129 hwrm_req_drop(bp, req);
130 return rc;
131}
132
133bool bnxt_is_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
134{
135 if (BNXT_PF(bp) && !(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
136 return !!(vf->flags & BNXT_VF_TRUST);
137
138 bnxt_hwrm_func_qcfg_flags(bp, vf);
139 return !!(vf->func_qcfg_flags & FUNC_QCFG_RESP_FLAGS_TRUSTED_VF);
140}
141
142static int bnxt_hwrm_set_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
143{
144 struct hwrm_func_cfg_input *req;
145 int rc;
146
147 if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
148 return 0;
149
150 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
151 if (rc)
152 return rc;
153
154 req->fid = cpu_to_le16(vf->fw_fid);
155 if (vf->flags & BNXT_VF_TRUST)
156 req->flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
157 else
158 req->flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_DISABLE);
159 return hwrm_req_send(bp, req);
160}
161
162int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
163{
164 struct bnxt *bp = netdev_priv(dev);
165 struct bnxt_vf_info *vf;
166
167 if (bnxt_vf_ndo_prep(bp, vf_id))
168 return -EINVAL;
169
170 vf = &bp->pf.vf[vf_id];
171 if (trusted)
172 vf->flags |= BNXT_VF_TRUST;
173 else
174 vf->flags &= ~BNXT_VF_TRUST;
175
176 bnxt_hwrm_set_trusted_vf(bp, vf);
177 return 0;
178}
179
180int bnxt_get_vf_config(struct net_device *dev, int vf_id,
181 struct ifla_vf_info *ivi)
182{
183 struct bnxt *bp = netdev_priv(dev);
184 struct bnxt_vf_info *vf;
185 int rc;
186
187 rc = bnxt_vf_ndo_prep(bp, vf_id);
188 if (rc)
189 return rc;
190
191 ivi->vf = vf_id;
192 vf = &bp->pf.vf[vf_id];
193
194 if (is_valid_ether_addr(vf->mac_addr))
195 memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
196 else
197 memcpy(&ivi->mac, vf->vf_mac_addr, ETH_ALEN);
198 ivi->max_tx_rate = vf->max_tx_rate;
199 ivi->min_tx_rate = vf->min_tx_rate;
200 ivi->vlan = vf->vlan & VLAN_VID_MASK;
201 ivi->qos = vf->vlan >> VLAN_PRIO_SHIFT;
202 ivi->spoofchk = !!(vf->flags & BNXT_VF_SPOOFCHK);
203 ivi->trusted = bnxt_is_trusted_vf(bp, vf);
204 if (!(vf->flags & BNXT_VF_LINK_FORCED))
205 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
206 else if (vf->flags & BNXT_VF_LINK_UP)
207 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
208 else
209 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
210
211 return 0;
212}
213
214int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
215{
216 struct bnxt *bp = netdev_priv(dev);
217 struct hwrm_func_cfg_input *req;
218 struct bnxt_vf_info *vf;
219 int rc;
220
221 rc = bnxt_vf_ndo_prep(bp, vf_id);
222 if (rc)
223 return rc;
224 /* reject bc or mc mac addr, zero mac addr means allow
225 * VF to use its own mac addr
226 */
227 if (is_multicast_ether_addr(mac)) {
228 netdev_err(dev, "Invalid VF ethernet address\n");
229 return -EINVAL;
230 }
231 vf = &bp->pf.vf[vf_id];
232
233 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
234 if (rc)
235 return rc;
236
237 memcpy(vf->mac_addr, mac, ETH_ALEN);
238
239 req->fid = cpu_to_le16(vf->fw_fid);
240 req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
241 memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
242 return hwrm_req_send(bp, req);
243}
244
245int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
246 __be16 vlan_proto)
247{
248 struct bnxt *bp = netdev_priv(dev);
249 struct hwrm_func_cfg_input *req;
250 struct bnxt_vf_info *vf;
251 u16 vlan_tag;
252 int rc;
253
254 if (bp->hwrm_spec_code < 0x10201)
255 return -ENOTSUPP;
256
257 if (vlan_proto != htons(ETH_P_8021Q) &&
258 (vlan_proto != htons(ETH_P_8021AD) ||
259 !(bp->fw_cap & BNXT_FW_CAP_DFLT_VLAN_TPID_PCP)))
260 return -EPROTONOSUPPORT;
261
262 rc = bnxt_vf_ndo_prep(bp, vf_id);
263 if (rc)
264 return rc;
265
266 if (vlan_id >= VLAN_N_VID || qos >= IEEE_8021Q_MAX_PRIORITIES ||
267 (!vlan_id && qos))
268 return -EINVAL;
269
270 vf = &bp->pf.vf[vf_id];
271 vlan_tag = vlan_id | (u16)qos << VLAN_PRIO_SHIFT;
272 if (vlan_tag == vf->vlan)
273 return 0;
274
275 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
276 if (!rc) {
277 req->fid = cpu_to_le16(vf->fw_fid);
278 req->dflt_vlan = cpu_to_le16(vlan_tag);
279 req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
280 if (bp->fw_cap & BNXT_FW_CAP_DFLT_VLAN_TPID_PCP) {
281 req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_TPID);
282 req->tpid = vlan_proto;
283 }
284 rc = hwrm_req_send(bp, req);
285 if (!rc)
286 vf->vlan = vlan_tag;
287 }
288 return rc;
289}
290
291int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
292 int max_tx_rate)
293{
294 struct bnxt *bp = netdev_priv(dev);
295 struct hwrm_func_cfg_input *req;
296 struct bnxt_vf_info *vf;
297 u32 pf_link_speed;
298 int rc;
299
300 rc = bnxt_vf_ndo_prep(bp, vf_id);
301 if (rc)
302 return rc;
303
304 vf = &bp->pf.vf[vf_id];
305 pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
306 if (max_tx_rate > pf_link_speed) {
307 netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
308 max_tx_rate, vf_id);
309 return -EINVAL;
310 }
311
312 if (min_tx_rate > pf_link_speed) {
313 netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
314 min_tx_rate, vf_id);
315 return -EINVAL;
316 }
317 if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
318 return 0;
319 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
320 if (!rc) {
321 req->fid = cpu_to_le16(vf->fw_fid);
322 req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW |
323 FUNC_CFG_REQ_ENABLES_MIN_BW);
324 req->max_bw = cpu_to_le32(max_tx_rate);
325 req->min_bw = cpu_to_le32(min_tx_rate);
326 rc = hwrm_req_send(bp, req);
327 if (!rc) {
328 vf->min_tx_rate = min_tx_rate;
329 vf->max_tx_rate = max_tx_rate;
330 }
331 }
332 return rc;
333}
334
335int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
336{
337 struct bnxt *bp = netdev_priv(dev);
338 struct bnxt_vf_info *vf;
339 int rc;
340
341 rc = bnxt_vf_ndo_prep(bp, vf_id);
342 if (rc)
343 return rc;
344
345 vf = &bp->pf.vf[vf_id];
346
347 vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
348 switch (link) {
349 case IFLA_VF_LINK_STATE_AUTO:
350 vf->flags |= BNXT_VF_LINK_UP;
351 break;
352 case IFLA_VF_LINK_STATE_DISABLE:
353 vf->flags |= BNXT_VF_LINK_FORCED;
354 break;
355 case IFLA_VF_LINK_STATE_ENABLE:
356 vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
357 break;
358 default:
359 netdev_err(bp->dev, "Invalid link option\n");
360 rc = -EINVAL;
361 break;
362 }
363 if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED))
364 rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf,
365 ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE);
366 return rc;
367}
368
369static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
370{
371 int i;
372 struct bnxt_vf_info *vf;
373
374 for (i = 0; i < num_vfs; i++) {
375 vf = &bp->pf.vf[i];
376 memset(vf, 0, sizeof(*vf));
377 }
378 return 0;
379}
380
381static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
382{
383 struct hwrm_func_vf_resc_free_input *req;
384 struct bnxt_pf_info *pf = &bp->pf;
385 int i, rc;
386
387 rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_RESC_FREE);
388 if (rc)
389 return rc;
390
391 hwrm_req_hold(bp, req);
392 for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
393 req->vf_id = cpu_to_le16(i);
394 rc = hwrm_req_send(bp, req);
395 if (rc)
396 break;
397 }
398 hwrm_req_drop(bp, req);
399 return rc;
400}
401
402static void bnxt_free_vf_resources(struct bnxt *bp)
403{
404 struct pci_dev *pdev = bp->pdev;
405 int i;
406
407 kfree(bp->pf.vf_event_bmap);
408 bp->pf.vf_event_bmap = NULL;
409
410 for (i = 0; i < 4; i++) {
411 if (bp->pf.hwrm_cmd_req_addr[i]) {
412 dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
413 bp->pf.hwrm_cmd_req_addr[i],
414 bp->pf.hwrm_cmd_req_dma_addr[i]);
415 bp->pf.hwrm_cmd_req_addr[i] = NULL;
416 }
417 }
418
419 bp->pf.active_vfs = 0;
420 kfree(bp->pf.vf);
421 bp->pf.vf = NULL;
422}
423
424static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
425{
426 struct pci_dev *pdev = bp->pdev;
427 u32 nr_pages, size, i, j, k = 0;
428
429 bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
430 if (!bp->pf.vf)
431 return -ENOMEM;
432
433 bnxt_set_vf_attr(bp, num_vfs);
434
435 size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
436 nr_pages = size / BNXT_PAGE_SIZE;
437 if (size & (BNXT_PAGE_SIZE - 1))
438 nr_pages++;
439
440 for (i = 0; i < nr_pages; i++) {
441 bp->pf.hwrm_cmd_req_addr[i] =
442 dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
443 &bp->pf.hwrm_cmd_req_dma_addr[i],
444 GFP_KERNEL);
445
446 if (!bp->pf.hwrm_cmd_req_addr[i])
447 return -ENOMEM;
448
449 for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
450 struct bnxt_vf_info *vf = &bp->pf.vf[k];
451
452 vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
453 j * BNXT_HWRM_REQ_MAX_SIZE;
454 vf->hwrm_cmd_req_dma_addr =
455 bp->pf.hwrm_cmd_req_dma_addr[i] + j *
456 BNXT_HWRM_REQ_MAX_SIZE;
457 k++;
458 }
459 }
460
461 /* Max 128 VF's */
462 bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
463 if (!bp->pf.vf_event_bmap)
464 return -ENOMEM;
465
466 bp->pf.hwrm_cmd_req_pages = nr_pages;
467 return 0;
468}
469
470static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
471{
472 struct hwrm_func_buf_rgtr_input *req;
473 int rc;
474
475 rc = hwrm_req_init(bp, req, HWRM_FUNC_BUF_RGTR);
476 if (rc)
477 return rc;
478
479 req->req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
480 req->req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
481 req->req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
482 req->req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
483 req->req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
484 req->req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
485 req->req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
486
487 return hwrm_req_send(bp, req);
488}
489
490static int __bnxt_set_vf_params(struct bnxt *bp, int vf_id)
491{
492 struct hwrm_func_cfg_input *req;
493 struct bnxt_vf_info *vf;
494 int rc;
495
496 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
497 if (rc)
498 return rc;
499
500 vf = &bp->pf.vf[vf_id];
501 req->fid = cpu_to_le16(vf->fw_fid);
502
503 if (is_valid_ether_addr(vf->mac_addr)) {
504 req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
505 memcpy(req->dflt_mac_addr, vf->mac_addr, ETH_ALEN);
506 }
507 if (vf->vlan) {
508 req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
509 req->dflt_vlan = cpu_to_le16(vf->vlan);
510 }
511 if (vf->max_tx_rate) {
512 req->enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW |
513 FUNC_CFG_REQ_ENABLES_MIN_BW);
514 req->max_bw = cpu_to_le32(vf->max_tx_rate);
515 req->min_bw = cpu_to_le32(vf->min_tx_rate);
516 }
517 if (vf->flags & BNXT_VF_TRUST)
518 req->flags |= cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
519
520 return hwrm_req_send(bp, req);
521}
522
523static void bnxt_hwrm_roce_sriov_cfg(struct bnxt *bp, int num_vfs)
524{
525 struct hwrm_func_qcaps_output *resp;
526 struct hwrm_func_cfg_input *cfg_req;
527 struct hwrm_func_qcaps_input *req;
528 int rc;
529
530 rc = hwrm_req_init(bp, req, HWRM_FUNC_QCAPS);
531 if (rc)
532 return;
533
534 req->fid = cpu_to_le16(0xffff);
535 resp = hwrm_req_hold(bp, req);
536 rc = hwrm_req_send(bp, req);
537 if (rc)
538 goto err;
539
540 rc = hwrm_req_init(bp, cfg_req, HWRM_FUNC_CFG);
541 if (rc)
542 goto err;
543
544 cfg_req->fid = cpu_to_le16(0xffff);
545 cfg_req->enables2 =
546 cpu_to_le32(FUNC_CFG_REQ_ENABLES2_ROCE_MAX_AV_PER_VF |
547 FUNC_CFG_REQ_ENABLES2_ROCE_MAX_CQ_PER_VF |
548 FUNC_CFG_REQ_ENABLES2_ROCE_MAX_MRW_PER_VF |
549 FUNC_CFG_REQ_ENABLES2_ROCE_MAX_QP_PER_VF |
550 FUNC_CFG_REQ_ENABLES2_ROCE_MAX_SRQ_PER_VF |
551 FUNC_CFG_REQ_ENABLES2_ROCE_MAX_GID_PER_VF);
552 cfg_req->roce_max_av_per_vf =
553 cpu_to_le32(le32_to_cpu(resp->roce_vf_max_av) / num_vfs);
554 cfg_req->roce_max_cq_per_vf =
555 cpu_to_le32(le32_to_cpu(resp->roce_vf_max_cq) / num_vfs);
556 cfg_req->roce_max_mrw_per_vf =
557 cpu_to_le32(le32_to_cpu(resp->roce_vf_max_mrw) / num_vfs);
558 cfg_req->roce_max_qp_per_vf =
559 cpu_to_le32(le32_to_cpu(resp->roce_vf_max_qp) / num_vfs);
560 cfg_req->roce_max_srq_per_vf =
561 cpu_to_le32(le32_to_cpu(resp->roce_vf_max_srq) / num_vfs);
562 cfg_req->roce_max_gid_per_vf =
563 cpu_to_le32(le32_to_cpu(resp->roce_vf_max_gid) / num_vfs);
564
565 rc = hwrm_req_send(bp, cfg_req);
566
567err:
568 hwrm_req_drop(bp, req);
569 if (rc)
570 netdev_err(bp->dev, "RoCE sriov configuration failed\n");
571}
572
573/* Only called by PF to reserve resources for VFs, returns actual number of
574 * VFs configured, or < 0 on error.
575 */
576static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
577{
578 struct hwrm_func_vf_resource_cfg_input *req;
579 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
580 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings;
581 u16 vf_stat_ctx, vf_vnics, vf_ring_grps;
582 struct bnxt_pf_info *pf = &bp->pf;
583 int i, rc = 0, min = 1;
584 u16 vf_msix = 0;
585 u16 vf_rss;
586
587 rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_RESOURCE_CFG);
588 if (rc)
589 return rc;
590
591 if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS) {
592 vf_msix = hw_resc->max_nqs - bnxt_nq_rings_in_use(bp);
593 vf_ring_grps = 0;
594 } else {
595 vf_ring_grps = hw_resc->max_hw_ring_grps - bp->rx_nr_rings;
596 }
597 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp);
598 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp);
599 if (bp->flags & BNXT_FLAG_AGG_RINGS)
600 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
601 else
602 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings;
603 vf_tx_rings = hw_resc->max_tx_rings - bp->tx_nr_rings;
604 vf_vnics = hw_resc->max_vnics - bp->nr_vnics;
605 vf_rss = hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs;
606
607 req->min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
608 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
609 min = 0;
610 req->min_rsscos_ctx = cpu_to_le16(min);
611 }
612 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
613 pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
614 req->min_cmpl_rings = cpu_to_le16(min);
615 req->min_tx_rings = cpu_to_le16(min);
616 req->min_rx_rings = cpu_to_le16(min);
617 req->min_l2_ctxs = cpu_to_le16(min);
618 req->min_vnics = cpu_to_le16(min);
619 req->min_stat_ctx = cpu_to_le16(min);
620 if (!(bp->flags & BNXT_FLAG_CHIP_P5_PLUS))
621 req->min_hw_ring_grps = cpu_to_le16(min);
622 } else {
623 vf_cp_rings /= num_vfs;
624 vf_tx_rings /= num_vfs;
625 vf_rx_rings /= num_vfs;
626 if ((bp->fw_cap & BNXT_FW_CAP_PRE_RESV_VNICS) &&
627 vf_vnics >= pf->max_vfs) {
628 /* Take into account that FW has pre-reserved 1 VNIC for
629 * each pf->max_vfs.
630 */
631 vf_vnics = (vf_vnics - pf->max_vfs + num_vfs) / num_vfs;
632 } else {
633 vf_vnics /= num_vfs;
634 }
635 vf_stat_ctx /= num_vfs;
636 vf_ring_grps /= num_vfs;
637 vf_rss /= num_vfs;
638
639 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
640 req->min_cmpl_rings = cpu_to_le16(vf_cp_rings);
641 req->min_tx_rings = cpu_to_le16(vf_tx_rings);
642 req->min_rx_rings = cpu_to_le16(vf_rx_rings);
643 req->min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
644 req->min_vnics = cpu_to_le16(vf_vnics);
645 req->min_stat_ctx = cpu_to_le16(vf_stat_ctx);
646 req->min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
647 req->min_rsscos_ctx = cpu_to_le16(vf_rss);
648 }
649 req->max_cmpl_rings = cpu_to_le16(vf_cp_rings);
650 req->max_tx_rings = cpu_to_le16(vf_tx_rings);
651 req->max_rx_rings = cpu_to_le16(vf_rx_rings);
652 req->max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
653 req->max_vnics = cpu_to_le16(vf_vnics);
654 req->max_stat_ctx = cpu_to_le16(vf_stat_ctx);
655 req->max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
656 req->max_rsscos_ctx = cpu_to_le16(vf_rss);
657 if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS)
658 req->max_msix = cpu_to_le16(vf_msix / num_vfs);
659
660 hwrm_req_hold(bp, req);
661 for (i = 0; i < num_vfs; i++) {
662 if (reset)
663 __bnxt_set_vf_params(bp, i);
664
665 req->vf_id = cpu_to_le16(pf->first_vf_id + i);
666 rc = hwrm_req_send(bp, req);
667 if (rc)
668 break;
669 pf->active_vfs = i + 1;
670 pf->vf[i].fw_fid = pf->first_vf_id + i;
671 }
672
673 if (pf->active_vfs) {
674 u16 n = pf->active_vfs;
675
676 hw_resc->max_tx_rings -= le16_to_cpu(req->min_tx_rings) * n;
677 hw_resc->max_rx_rings -= le16_to_cpu(req->min_rx_rings) * n;
678 hw_resc->max_hw_ring_grps -=
679 le16_to_cpu(req->min_hw_ring_grps) * n;
680 hw_resc->max_cp_rings -= le16_to_cpu(req->min_cmpl_rings) * n;
681 hw_resc->max_rsscos_ctxs -=
682 le16_to_cpu(req->min_rsscos_ctx) * n;
683 hw_resc->max_stat_ctxs -= le16_to_cpu(req->min_stat_ctx) * n;
684 hw_resc->max_vnics -= le16_to_cpu(req->min_vnics) * n;
685 if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS)
686 hw_resc->max_nqs -= vf_msix;
687
688 rc = pf->active_vfs;
689 }
690 hwrm_req_drop(bp, req);
691 return rc;
692}
693
694/* Only called by PF to reserve resources for VFs, returns actual number of
695 * VFs configured, or < 0 on error.
696 */
697static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
698{
699 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
700 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
701 struct bnxt_pf_info *pf = &bp->pf;
702 struct hwrm_func_cfg_input *req;
703 int total_vf_tx_rings = 0;
704 u16 vf_ring_grps;
705 u32 mtu, i;
706 int rc;
707
708 rc = bnxt_hwrm_func_cfg_short_req_init(bp, &req);
709 if (rc)
710 return rc;
711
712 /* Remaining rings are distributed equally amongs VF's for now */
713 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
714 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp) / num_vfs;
715 if (bp->flags & BNXT_FLAG_AGG_RINGS)
716 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
717 num_vfs;
718 else
719 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
720 num_vfs;
721 vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
722 vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
723 vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
724 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
725
726 req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_MTU |
727 FUNC_CFG_REQ_ENABLES_MRU |
728 FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
729 FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
730 FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
731 FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
732 FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
733 FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
734 FUNC_CFG_REQ_ENABLES_NUM_VNICS |
735 FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
736
737 mtu = bp->dev->mtu + ETH_HLEN + VLAN_HLEN;
738 req->mru = cpu_to_le16(mtu);
739 req->admin_mtu = cpu_to_le16(mtu);
740
741 req->num_rsscos_ctxs = cpu_to_le16(1);
742 req->num_cmpl_rings = cpu_to_le16(vf_cp_rings);
743 req->num_tx_rings = cpu_to_le16(vf_tx_rings);
744 req->num_rx_rings = cpu_to_le16(vf_rx_rings);
745 req->num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
746 req->num_l2_ctxs = cpu_to_le16(4);
747
748 req->num_vnics = cpu_to_le16(vf_vnics);
749 /* FIXME spec currently uses 1 bit for stats ctx */
750 req->num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
751
752 hwrm_req_hold(bp, req);
753 for (i = 0; i < num_vfs; i++) {
754 int vf_tx_rsvd = vf_tx_rings;
755
756 req->fid = cpu_to_le16(pf->first_vf_id + i);
757 rc = hwrm_req_send(bp, req);
758 if (rc)
759 break;
760 pf->active_vfs = i + 1;
761 pf->vf[i].fw_fid = le16_to_cpu(req->fid);
762 rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
763 &vf_tx_rsvd);
764 if (rc)
765 break;
766 total_vf_tx_rings += vf_tx_rsvd;
767 }
768 hwrm_req_drop(bp, req);
769 if (pf->active_vfs) {
770 hw_resc->max_tx_rings -= total_vf_tx_rings;
771 hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
772 hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
773 hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
774 hw_resc->max_rsscos_ctxs -= num_vfs;
775 hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
776 hw_resc->max_vnics -= vf_vnics * num_vfs;
777 rc = pf->active_vfs;
778 }
779 return rc;
780}
781
782static int bnxt_func_cfg(struct bnxt *bp, int num_vfs, bool reset)
783{
784 if (BNXT_NEW_RM(bp))
785 return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs, reset);
786 else
787 return bnxt_hwrm_func_cfg(bp, num_vfs);
788}
789
790int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
791{
792 int rc;
793
794 /* Register buffers for VFs */
795 rc = bnxt_hwrm_func_buf_rgtr(bp);
796 if (rc)
797 return rc;
798
799 /* Reserve resources for VFs */
800 rc = bnxt_func_cfg(bp, *num_vfs, reset);
801 if (rc != *num_vfs) {
802 if (rc <= 0) {
803 netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
804 *num_vfs = 0;
805 return rc;
806 }
807 netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n",
808 rc);
809 *num_vfs = rc;
810 }
811
812 if (BNXT_RDMA_SRIOV_EN(bp) && BNXT_ROCE_VF_RESC_CAP(bp))
813 bnxt_hwrm_roce_sriov_cfg(bp, *num_vfs);
814
815 return 0;
816}
817
818static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
819{
820 int rc = 0, vfs_supported;
821 int min_rx_rings, min_tx_rings, min_rss_ctxs;
822 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
823 int tx_ok = 0, rx_ok = 0, rss_ok = 0;
824 int avail_cp, avail_stat;
825
826 /* Check if we can enable requested num of vf's. At a mininum
827 * we require 1 RX 1 TX rings for each VF. In this minimum conf
828 * features like TPA will not be available.
829 */
830 vfs_supported = *num_vfs;
831
832 avail_cp = bnxt_get_avail_cp_rings_for_en(bp);
833 avail_stat = bnxt_get_avail_stat_ctxs_for_en(bp);
834 avail_cp = min_t(int, avail_cp, avail_stat);
835
836 while (vfs_supported) {
837 min_rx_rings = vfs_supported;
838 min_tx_rings = vfs_supported;
839 min_rss_ctxs = vfs_supported;
840
841 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
842 if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
843 min_rx_rings)
844 rx_ok = 1;
845 } else {
846 if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
847 min_rx_rings)
848 rx_ok = 1;
849 }
850 if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
851 avail_cp < min_rx_rings)
852 rx_ok = 0;
853
854 if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
855 avail_cp >= min_tx_rings)
856 tx_ok = 1;
857
858 if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
859 min_rss_ctxs)
860 rss_ok = 1;
861
862 if (tx_ok && rx_ok && rss_ok)
863 break;
864
865 vfs_supported--;
866 }
867
868 if (!vfs_supported) {
869 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
870 return -EINVAL;
871 }
872
873 if (vfs_supported != *num_vfs) {
874 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
875 *num_vfs, vfs_supported);
876 *num_vfs = vfs_supported;
877 }
878
879 rc = bnxt_alloc_vf_resources(bp, *num_vfs);
880 if (rc)
881 goto err_out1;
882
883 rc = bnxt_cfg_hw_sriov(bp, num_vfs, false);
884 if (rc)
885 goto err_out2;
886
887 rc = pci_enable_sriov(bp->pdev, *num_vfs);
888 if (rc)
889 goto err_out2;
890
891 if (bp->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV)
892 return 0;
893
894 /* Create representors for VFs in switchdev mode */
895 devl_lock(bp->dl);
896 rc = bnxt_vf_reps_create(bp);
897 devl_unlock(bp->dl);
898 if (rc) {
899 netdev_info(bp->dev, "Cannot enable VFS as representors cannot be created\n");
900 goto err_out3;
901 }
902
903 return 0;
904
905err_out3:
906 /* Disable SR-IOV */
907 pci_disable_sriov(bp->pdev);
908
909err_out2:
910 /* Free the resources reserved for various VF's */
911 bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
912
913 /* Restore the max resources */
914 bnxt_hwrm_func_qcaps(bp);
915
916err_out1:
917 bnxt_free_vf_resources(bp);
918
919 return rc;
920}
921
922void bnxt_sriov_disable(struct bnxt *bp)
923{
924 u16 num_vfs = pci_num_vf(bp->pdev);
925
926 if (!num_vfs)
927 return;
928
929 /* synchronize VF and VF-rep create and destroy */
930 devl_lock(bp->dl);
931 bnxt_vf_reps_destroy(bp);
932
933 if (pci_vfs_assigned(bp->pdev)) {
934 bnxt_hwrm_fwd_async_event_cmpl(
935 bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
936 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
937 num_vfs);
938 } else {
939 pci_disable_sriov(bp->pdev);
940 /* Free the HW resources reserved for various VF's */
941 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
942 }
943 devl_unlock(bp->dl);
944
945 bnxt_free_vf_resources(bp);
946
947 /* Reclaim all resources for the PF. */
948 rtnl_lock();
949 bnxt_restore_pf_fw_resources(bp);
950 rtnl_unlock();
951}
952
953int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
954{
955 struct net_device *dev = pci_get_drvdata(pdev);
956 struct bnxt *bp = netdev_priv(dev);
957
958 rtnl_lock();
959 if (!netif_running(dev)) {
960 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
961 rtnl_unlock();
962 return 0;
963 }
964 if (test_bit(BNXT_STATE_IN_FW_RESET, &bp->state)) {
965 netdev_warn(dev, "Reject SRIOV config request when FW reset is in progress\n");
966 rtnl_unlock();
967 return 0;
968 }
969 bp->sriov_cfg = true;
970 rtnl_unlock();
971
972 if (pci_vfs_assigned(bp->pdev)) {
973 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
974 num_vfs = 0;
975 goto sriov_cfg_exit;
976 }
977
978 /* Check if enabled VFs is same as requested */
979 if (num_vfs && num_vfs == bp->pf.active_vfs)
980 goto sriov_cfg_exit;
981
982 /* if there are previous existing VFs, clean them up */
983 bnxt_sriov_disable(bp);
984 if (!num_vfs)
985 goto sriov_cfg_exit;
986
987 bnxt_sriov_enable(bp, &num_vfs);
988
989sriov_cfg_exit:
990 bp->sriov_cfg = false;
991 wake_up(&bp->sriov_cfg_wait);
992
993 return num_vfs;
994}
995
996static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
997 void *encap_resp, __le64 encap_resp_addr,
998 __le16 encap_resp_cpr, u32 msg_size)
999{
1000 struct hwrm_fwd_resp_input *req;
1001 int rc;
1002
1003 if (BNXT_FWD_RESP_SIZE_ERR(msg_size)) {
1004 netdev_warn_once(bp->dev, "HWRM fwd response too big (%d bytes)\n",
1005 msg_size);
1006 return -EINVAL;
1007 }
1008
1009 rc = hwrm_req_init(bp, req, HWRM_FWD_RESP);
1010 if (!rc) {
1011 /* Set the new target id */
1012 req->target_id = cpu_to_le16(vf->fw_fid);
1013 req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
1014 req->encap_resp_len = cpu_to_le16(msg_size);
1015 req->encap_resp_addr = encap_resp_addr;
1016 req->encap_resp_cmpl_ring = encap_resp_cpr;
1017 memcpy(req->encap_resp, encap_resp, msg_size);
1018
1019 rc = hwrm_req_send(bp, req);
1020 }
1021 if (rc)
1022 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
1023 return rc;
1024}
1025
1026static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
1027 u32 msg_size)
1028{
1029 struct hwrm_reject_fwd_resp_input *req;
1030 int rc;
1031
1032 if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
1033 return -EINVAL;
1034
1035 rc = hwrm_req_init(bp, req, HWRM_REJECT_FWD_RESP);
1036 if (!rc) {
1037 /* Set the new target id */
1038 req->target_id = cpu_to_le16(vf->fw_fid);
1039 req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
1040 memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);
1041
1042 rc = hwrm_req_send(bp, req);
1043 }
1044 if (rc)
1045 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
1046 return rc;
1047}
1048
1049static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
1050 u32 msg_size)
1051{
1052 struct hwrm_exec_fwd_resp_input *req;
1053 int rc;
1054
1055 if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
1056 return -EINVAL;
1057
1058 rc = hwrm_req_init(bp, req, HWRM_EXEC_FWD_RESP);
1059 if (!rc) {
1060 /* Set the new target id */
1061 req->target_id = cpu_to_le16(vf->fw_fid);
1062 req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
1063 memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);
1064
1065 rc = hwrm_req_send(bp, req);
1066 }
1067 if (rc)
1068 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
1069 return rc;
1070}
1071
1072static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
1073{
1074 u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
1075 struct hwrm_func_vf_cfg_input *req =
1076 (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;
1077
1078 /* Allow VF to set a valid MAC address, if trust is set to on or
1079 * if the PF assigned MAC address is zero
1080 */
1081 if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
1082 bool trust = bnxt_is_trusted_vf(bp, vf);
1083
1084 if (is_valid_ether_addr(req->dflt_mac_addr) &&
1085 (trust || !is_valid_ether_addr(vf->mac_addr) ||
1086 ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
1087 ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
1088 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1089 }
1090 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1091 }
1092 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1093}
1094
1095static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
1096{
1097 u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
1098 struct hwrm_cfa_l2_filter_alloc_input *req =
1099 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
1100 bool mac_ok = false;
1101
1102 if (!is_valid_ether_addr((const u8 *)req->l2_addr))
1103 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1104
1105 /* Allow VF to set a valid MAC address, if trust is set to on.
1106 * Or VF MAC address must first match MAC address in PF's context.
1107 * Otherwise, it must match the VF MAC address if firmware spec >=
1108 * 1.2.2
1109 */
1110 if (bnxt_is_trusted_vf(bp, vf)) {
1111 mac_ok = true;
1112 } else if (is_valid_ether_addr(vf->mac_addr)) {
1113 if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
1114 mac_ok = true;
1115 } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
1116 if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
1117 mac_ok = true;
1118 } else {
1119 /* There are two cases:
1120 * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
1121 * to the PF and so it doesn't have to match
1122 * 2.Allow VF to modify it's own MAC when PF has not assigned a
1123 * valid MAC address and firmware spec >= 0x10202
1124 */
1125 mac_ok = true;
1126 }
1127 if (mac_ok)
1128 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1129 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1130}
1131
1132static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
1133{
1134 int rc = 0;
1135
1136 if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
1137 /* real link */
1138 rc = bnxt_hwrm_exec_fwd_resp(
1139 bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
1140 } else {
1141 struct hwrm_port_phy_qcfg_output_compat phy_qcfg_resp = {};
1142 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
1143
1144 phy_qcfg_req =
1145 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
1146 mutex_lock(&bp->link_lock);
1147 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
1148 sizeof(phy_qcfg_resp));
1149 mutex_unlock(&bp->link_lock);
1150 phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
1151 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
1152 /* New SPEEDS2 fields are beyond the legacy structure, so
1153 * clear the SPEEDS2_SUPPORTED flag.
1154 */
1155 phy_qcfg_resp.option_flags &=
1156 ~PORT_PHY_QCAPS_RESP_FLAGS2_SPEEDS2_SUPPORTED;
1157 phy_qcfg_resp.valid = 1;
1158
1159 if (vf->flags & BNXT_VF_LINK_UP) {
1160 /* if physical link is down, force link up on VF */
1161 if (phy_qcfg_resp.link !=
1162 PORT_PHY_QCFG_RESP_LINK_LINK) {
1163 phy_qcfg_resp.link =
1164 PORT_PHY_QCFG_RESP_LINK_LINK;
1165 phy_qcfg_resp.link_speed = cpu_to_le16(
1166 PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
1167 phy_qcfg_resp.duplex_cfg =
1168 PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
1169 phy_qcfg_resp.duplex_state =
1170 PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
1171 phy_qcfg_resp.pause =
1172 (PORT_PHY_QCFG_RESP_PAUSE_TX |
1173 PORT_PHY_QCFG_RESP_PAUSE_RX);
1174 }
1175 } else {
1176 /* force link down */
1177 phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
1178 phy_qcfg_resp.link_speed = 0;
1179 phy_qcfg_resp.duplex_state =
1180 PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
1181 phy_qcfg_resp.pause = 0;
1182 }
1183 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
1184 phy_qcfg_req->resp_addr,
1185 phy_qcfg_req->cmpl_ring,
1186 sizeof(phy_qcfg_resp));
1187 }
1188 return rc;
1189}
1190
1191static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
1192{
1193 int rc = 0;
1194 struct input *encap_req = vf->hwrm_cmd_req_addr;
1195 u32 req_type = le16_to_cpu(encap_req->req_type);
1196
1197 switch (req_type) {
1198 case HWRM_FUNC_VF_CFG:
1199 rc = bnxt_vf_configure_mac(bp, vf);
1200 break;
1201 case HWRM_CFA_L2_FILTER_ALLOC:
1202 rc = bnxt_vf_validate_set_mac(bp, vf);
1203 break;
1204 case HWRM_FUNC_CFG:
1205 /* TODO Validate if VF is allowed to change mac address,
1206 * mtu, num of rings etc
1207 */
1208 rc = bnxt_hwrm_exec_fwd_resp(
1209 bp, vf, sizeof(struct hwrm_func_cfg_input));
1210 break;
1211 case HWRM_PORT_PHY_QCFG:
1212 rc = bnxt_vf_set_link(bp, vf);
1213 break;
1214 default:
1215 break;
1216 }
1217 return rc;
1218}
1219
1220void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1221{
1222 u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
1223
1224 /* Scan through VF's and process commands */
1225 while (1) {
1226 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
1227 if (vf_id >= active_vfs)
1228 break;
1229
1230 clear_bit(vf_id, bp->pf.vf_event_bmap);
1231 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
1232 i = vf_id + 1;
1233 }
1234}
1235
1236int bnxt_approve_mac(struct bnxt *bp, const u8 *mac, bool strict)
1237{
1238 struct hwrm_func_vf_cfg_input *req;
1239 int rc = 0;
1240
1241 if (!BNXT_VF(bp))
1242 return 0;
1243
1244 if (bp->hwrm_spec_code < 0x10202) {
1245 if (is_valid_ether_addr(bp->vf.mac_addr))
1246 rc = -EADDRNOTAVAIL;
1247 goto mac_done;
1248 }
1249
1250 rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_CFG);
1251 if (rc)
1252 goto mac_done;
1253
1254 req->enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
1255 memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
1256 if (!strict)
1257 hwrm_req_flags(bp, req, BNXT_HWRM_CTX_SILENT);
1258 rc = hwrm_req_send(bp, req);
1259mac_done:
1260 if (rc && strict) {
1261 rc = -EADDRNOTAVAIL;
1262 netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
1263 mac);
1264 return rc;
1265 }
1266 return 0;
1267}
1268
1269void bnxt_update_vf_mac(struct bnxt *bp)
1270{
1271 struct hwrm_func_qcaps_output *resp;
1272 struct hwrm_func_qcaps_input *req;
1273 bool inform_pf = false;
1274
1275 if (hwrm_req_init(bp, req, HWRM_FUNC_QCAPS))
1276 return;
1277
1278 req->fid = cpu_to_le16(0xffff);
1279
1280 resp = hwrm_req_hold(bp, req);
1281 if (hwrm_req_send(bp, req))
1282 goto update_vf_mac_exit;
1283
1284 /* Store MAC address from the firmware. There are 2 cases:
1285 * 1. MAC address is valid. It is assigned from the PF and we
1286 * need to override the current VF MAC address with it.
1287 * 2. MAC address is zero. The VF will use a random MAC address by
1288 * default but the stored zero MAC will allow the VF user to change
1289 * the random MAC address using ndo_set_mac_address() if he wants.
1290 */
1291 if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr)) {
1292 memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
1293 /* This means we are now using our own MAC address, let
1294 * the PF know about this MAC address.
1295 */
1296 if (!is_valid_ether_addr(bp->vf.mac_addr))
1297 inform_pf = true;
1298 }
1299
1300 /* overwrite netdev dev_addr with admin VF MAC */
1301 if (is_valid_ether_addr(bp->vf.mac_addr))
1302 eth_hw_addr_set(bp->dev, bp->vf.mac_addr);
1303update_vf_mac_exit:
1304 hwrm_req_drop(bp, req);
1305 if (inform_pf)
1306 bnxt_approve_mac(bp, bp->dev->dev_addr, false);
1307}
1308
1309#else
1310
1311int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
1312{
1313 if (*num_vfs)
1314 return -EOPNOTSUPP;
1315 return 0;
1316}
1317
1318void bnxt_sriov_disable(struct bnxt *bp)
1319{
1320}
1321
1322void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1323{
1324 netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
1325}
1326
1327void bnxt_update_vf_mac(struct bnxt *bp)
1328{
1329}
1330
1331int bnxt_approve_mac(struct bnxt *bp, const u8 *mac, bool strict)
1332{
1333 return 0;
1334}
1335#endif