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
bnxt_hwrm_fwd_async_event_cmpl(struct bnxt * bp,struct bnxt_vf_info * vf,u16 event_id)27 static 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);
49 exit:
50 if (rc)
51 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
52 rc);
53 return rc;
54 }
55
bnxt_vf_ndo_prep(struct bnxt * bp,int vf_id)56 static 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
bnxt_set_vf_spoofchk(struct net_device * dev,int vf_id,bool setting)69 int 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 = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
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
bnxt_hwrm_func_qcfg_flags(struct bnxt * bp,struct bnxt_vf_info * vf)113 static 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
bnxt_is_trusted_vf(struct bnxt * bp,struct bnxt_vf_info * vf)132 bool 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
bnxt_hwrm_set_trusted_vf(struct bnxt * bp,struct bnxt_vf_info * vf)141 static 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 = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
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
bnxt_set_vf_trust(struct net_device * dev,int vf_id,bool trusted)161 int 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
bnxt_get_vf_config(struct net_device * dev,int vf_id,struct ifla_vf_info * ivi)179 int 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
bnxt_set_vf_mac(struct net_device * dev,int vf_id,u8 * mac)216 int 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 = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
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
bnxt_set_vf_vlan(struct net_device * dev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)247 int 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 = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
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
bnxt_set_vf_bw(struct net_device * dev,int vf_id,int min_tx_rate,int max_tx_rate)289 int 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 = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
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
bnxt_set_vf_link_state(struct net_device * dev,int vf_id,int link)333 int 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
bnxt_set_vf_attr(struct bnxt * bp,int num_vfs)367 static 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
bnxt_hwrm_func_vf_resource_free(struct bnxt * bp,int num_vfs)379 static 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
bnxt_free_vf_resources(struct bnxt * bp)400 static 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
bnxt_alloc_vf_resources(struct bnxt * bp,int num_vfs)422 static 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
bnxt_hwrm_func_buf_rgtr(struct bnxt * bp)468 static 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
__bnxt_set_vf_params(struct bnxt * bp,int vf_id)488 static 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 = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
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 */
bnxt_hwrm_func_vf_resc_cfg(struct bnxt * bp,int num_vfs,bool reset)524 static 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) {
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_vnics = min_t(u16, vf_vnics, vf_rx_rings);
554 vf_rss = hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs;
555
556 req->min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
557 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
558 min = 0;
559 req->min_rsscos_ctx = cpu_to_le16(min);
560 }
561 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
562 pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
563 req->min_cmpl_rings = cpu_to_le16(min);
564 req->min_tx_rings = cpu_to_le16(min);
565 req->min_rx_rings = cpu_to_le16(min);
566 req->min_l2_ctxs = cpu_to_le16(min);
567 req->min_vnics = cpu_to_le16(min);
568 req->min_stat_ctx = cpu_to_le16(min);
569 if (!(bp->flags & BNXT_FLAG_CHIP_P5))
570 req->min_hw_ring_grps = cpu_to_le16(min);
571 } else {
572 vf_cp_rings /= num_vfs;
573 vf_tx_rings /= num_vfs;
574 vf_rx_rings /= num_vfs;
575 vf_vnics /= num_vfs;
576 vf_stat_ctx /= num_vfs;
577 vf_ring_grps /= num_vfs;
578 vf_rss /= num_vfs;
579
580 req->min_cmpl_rings = cpu_to_le16(vf_cp_rings);
581 req->min_tx_rings = cpu_to_le16(vf_tx_rings);
582 req->min_rx_rings = cpu_to_le16(vf_rx_rings);
583 req->min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
584 req->min_vnics = cpu_to_le16(vf_vnics);
585 req->min_stat_ctx = cpu_to_le16(vf_stat_ctx);
586 req->min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
587 req->min_rsscos_ctx = cpu_to_le16(vf_rss);
588 }
589 req->max_cmpl_rings = cpu_to_le16(vf_cp_rings);
590 req->max_tx_rings = cpu_to_le16(vf_tx_rings);
591 req->max_rx_rings = cpu_to_le16(vf_rx_rings);
592 req->max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
593 req->max_vnics = cpu_to_le16(vf_vnics);
594 req->max_stat_ctx = cpu_to_le16(vf_stat_ctx);
595 req->max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
596 req->max_rsscos_ctx = cpu_to_le16(vf_rss);
597 if (bp->flags & BNXT_FLAG_CHIP_P5)
598 req->max_msix = cpu_to_le16(vf_msix / num_vfs);
599
600 hwrm_req_hold(bp, req);
601 for (i = 0; i < num_vfs; i++) {
602 if (reset)
603 __bnxt_set_vf_params(bp, i);
604
605 req->vf_id = cpu_to_le16(pf->first_vf_id + i);
606 rc = hwrm_req_send(bp, req);
607 if (rc)
608 break;
609 pf->active_vfs = i + 1;
610 pf->vf[i].fw_fid = pf->first_vf_id + i;
611 }
612
613 if (pf->active_vfs) {
614 u16 n = pf->active_vfs;
615
616 hw_resc->max_tx_rings -= le16_to_cpu(req->min_tx_rings) * n;
617 hw_resc->max_rx_rings -= le16_to_cpu(req->min_rx_rings) * n;
618 hw_resc->max_hw_ring_grps -=
619 le16_to_cpu(req->min_hw_ring_grps) * n;
620 hw_resc->max_cp_rings -= le16_to_cpu(req->min_cmpl_rings) * n;
621 hw_resc->max_rsscos_ctxs -=
622 le16_to_cpu(req->min_rsscos_ctx) * n;
623 hw_resc->max_stat_ctxs -= le16_to_cpu(req->min_stat_ctx) * n;
624 hw_resc->max_vnics -= le16_to_cpu(req->min_vnics) * n;
625 if (bp->flags & BNXT_FLAG_CHIP_P5)
626 hw_resc->max_nqs -= vf_msix;
627
628 rc = pf->active_vfs;
629 }
630 hwrm_req_drop(bp, req);
631 return rc;
632 }
633
634 /* Only called by PF to reserve resources for VFs, returns actual number of
635 * VFs configured, or < 0 on error.
636 */
bnxt_hwrm_func_cfg(struct bnxt * bp,int num_vfs)637 static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
638 {
639 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
640 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
641 struct bnxt_pf_info *pf = &bp->pf;
642 struct hwrm_func_cfg_input *req;
643 int total_vf_tx_rings = 0;
644 u16 vf_ring_grps;
645 u32 mtu, i;
646 int rc;
647
648 rc = hwrm_req_init(bp, req, HWRM_FUNC_CFG);
649 if (rc)
650 return rc;
651
652 /* Remaining rings are distributed equally amongs VF's for now */
653 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
654 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp) / num_vfs;
655 if (bp->flags & BNXT_FLAG_AGG_RINGS)
656 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
657 num_vfs;
658 else
659 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
660 num_vfs;
661 vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
662 vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
663 vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
664 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
665
666 req->enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_ADMIN_MTU |
667 FUNC_CFG_REQ_ENABLES_MRU |
668 FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
669 FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
670 FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
671 FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
672 FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
673 FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
674 FUNC_CFG_REQ_ENABLES_NUM_VNICS |
675 FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
676
677 mtu = bp->dev->mtu + ETH_HLEN + VLAN_HLEN;
678 req->mru = cpu_to_le16(mtu);
679 req->admin_mtu = cpu_to_le16(mtu);
680
681 req->num_rsscos_ctxs = cpu_to_le16(1);
682 req->num_cmpl_rings = cpu_to_le16(vf_cp_rings);
683 req->num_tx_rings = cpu_to_le16(vf_tx_rings);
684 req->num_rx_rings = cpu_to_le16(vf_rx_rings);
685 req->num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
686 req->num_l2_ctxs = cpu_to_le16(4);
687
688 req->num_vnics = cpu_to_le16(vf_vnics);
689 /* FIXME spec currently uses 1 bit for stats ctx */
690 req->num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
691
692 hwrm_req_hold(bp, req);
693 for (i = 0; i < num_vfs; i++) {
694 int vf_tx_rsvd = vf_tx_rings;
695
696 req->fid = cpu_to_le16(pf->first_vf_id + i);
697 rc = hwrm_req_send(bp, req);
698 if (rc)
699 break;
700 pf->active_vfs = i + 1;
701 pf->vf[i].fw_fid = le16_to_cpu(req->fid);
702 rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
703 &vf_tx_rsvd);
704 if (rc)
705 break;
706 total_vf_tx_rings += vf_tx_rsvd;
707 }
708 hwrm_req_drop(bp, req);
709 if (pf->active_vfs) {
710 hw_resc->max_tx_rings -= total_vf_tx_rings;
711 hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
712 hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
713 hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
714 hw_resc->max_rsscos_ctxs -= num_vfs;
715 hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
716 hw_resc->max_vnics -= vf_vnics * num_vfs;
717 rc = pf->active_vfs;
718 }
719 return rc;
720 }
721
bnxt_func_cfg(struct bnxt * bp,int num_vfs,bool reset)722 static int bnxt_func_cfg(struct bnxt *bp, int num_vfs, bool reset)
723 {
724 if (BNXT_NEW_RM(bp))
725 return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs, reset);
726 else
727 return bnxt_hwrm_func_cfg(bp, num_vfs);
728 }
729
bnxt_cfg_hw_sriov(struct bnxt * bp,int * num_vfs,bool reset)730 int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
731 {
732 int rc;
733
734 /* Register buffers for VFs */
735 rc = bnxt_hwrm_func_buf_rgtr(bp);
736 if (rc)
737 return rc;
738
739 /* Reserve resources for VFs */
740 rc = bnxt_func_cfg(bp, *num_vfs, reset);
741 if (rc != *num_vfs) {
742 if (rc <= 0) {
743 netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
744 *num_vfs = 0;
745 return rc;
746 }
747 netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n",
748 rc);
749 *num_vfs = rc;
750 }
751
752 return 0;
753 }
754
bnxt_sriov_enable(struct bnxt * bp,int * num_vfs)755 static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
756 {
757 int rc = 0, vfs_supported;
758 int min_rx_rings, min_tx_rings, min_rss_ctxs;
759 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
760 int tx_ok = 0, rx_ok = 0, rss_ok = 0;
761 int avail_cp, avail_stat;
762
763 /* Check if we can enable requested num of vf's. At a mininum
764 * we require 1 RX 1 TX rings for each VF. In this minimum conf
765 * features like TPA will not be available.
766 */
767 vfs_supported = *num_vfs;
768
769 avail_cp = bnxt_get_avail_cp_rings_for_en(bp);
770 avail_stat = bnxt_get_avail_stat_ctxs_for_en(bp);
771 avail_cp = min_t(int, avail_cp, avail_stat);
772
773 while (vfs_supported) {
774 min_rx_rings = vfs_supported;
775 min_tx_rings = vfs_supported;
776 min_rss_ctxs = vfs_supported;
777
778 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
779 if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
780 min_rx_rings)
781 rx_ok = 1;
782 } else {
783 if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
784 min_rx_rings)
785 rx_ok = 1;
786 }
787 if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
788 avail_cp < min_rx_rings)
789 rx_ok = 0;
790
791 if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
792 avail_cp >= min_tx_rings)
793 tx_ok = 1;
794
795 if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
796 min_rss_ctxs)
797 rss_ok = 1;
798
799 if (tx_ok && rx_ok && rss_ok)
800 break;
801
802 vfs_supported--;
803 }
804
805 if (!vfs_supported) {
806 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
807 return -EINVAL;
808 }
809
810 if (vfs_supported != *num_vfs) {
811 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
812 *num_vfs, vfs_supported);
813 *num_vfs = vfs_supported;
814 }
815
816 rc = bnxt_alloc_vf_resources(bp, *num_vfs);
817 if (rc)
818 goto err_out1;
819
820 rc = bnxt_cfg_hw_sriov(bp, num_vfs, false);
821 if (rc)
822 goto err_out2;
823
824 rc = pci_enable_sriov(bp->pdev, *num_vfs);
825 if (rc)
826 goto err_out2;
827
828 if (bp->eswitch_mode != DEVLINK_ESWITCH_MODE_SWITCHDEV)
829 return 0;
830
831 /* Create representors for VFs in switchdev mode */
832 devl_lock(bp->dl);
833 rc = bnxt_vf_reps_create(bp);
834 devl_unlock(bp->dl);
835 if (rc) {
836 netdev_info(bp->dev, "Cannot enable VFS as representors cannot be created\n");
837 goto err_out3;
838 }
839
840 return 0;
841
842 err_out3:
843 /* Disable SR-IOV */
844 pci_disable_sriov(bp->pdev);
845
846 err_out2:
847 /* Free the resources reserved for various VF's */
848 bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
849
850 /* Restore the max resources */
851 bnxt_hwrm_func_qcaps(bp);
852
853 err_out1:
854 bnxt_free_vf_resources(bp);
855
856 return rc;
857 }
858
bnxt_sriov_disable(struct bnxt * bp)859 void bnxt_sriov_disable(struct bnxt *bp)
860 {
861 u16 num_vfs = pci_num_vf(bp->pdev);
862
863 if (!num_vfs)
864 return;
865
866 /* synchronize VF and VF-rep create and destroy */
867 devl_lock(bp->dl);
868 bnxt_vf_reps_destroy(bp);
869
870 if (pci_vfs_assigned(bp->pdev)) {
871 bnxt_hwrm_fwd_async_event_cmpl(
872 bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
873 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
874 num_vfs);
875 } else {
876 pci_disable_sriov(bp->pdev);
877 /* Free the HW resources reserved for various VF's */
878 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
879 }
880 devl_unlock(bp->dl);
881
882 bnxt_free_vf_resources(bp);
883
884 /* Reclaim all resources for the PF. */
885 rtnl_lock();
886 bnxt_restore_pf_fw_resources(bp);
887 rtnl_unlock();
888 }
889
bnxt_sriov_configure(struct pci_dev * pdev,int num_vfs)890 int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
891 {
892 struct net_device *dev = pci_get_drvdata(pdev);
893 struct bnxt *bp = netdev_priv(dev);
894
895 if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
896 netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
897 return 0;
898 }
899
900 rtnl_lock();
901 if (!netif_running(dev)) {
902 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
903 rtnl_unlock();
904 return 0;
905 }
906 if (test_bit(BNXT_STATE_IN_FW_RESET, &bp->state)) {
907 netdev_warn(dev, "Reject SRIOV config request when FW reset is in progress\n");
908 rtnl_unlock();
909 return 0;
910 }
911 bp->sriov_cfg = true;
912 rtnl_unlock();
913
914 if (pci_vfs_assigned(bp->pdev)) {
915 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
916 num_vfs = 0;
917 goto sriov_cfg_exit;
918 }
919
920 /* Check if enabled VFs is same as requested */
921 if (num_vfs && num_vfs == bp->pf.active_vfs)
922 goto sriov_cfg_exit;
923
924 /* if there are previous existing VFs, clean them up */
925 bnxt_sriov_disable(bp);
926 if (!num_vfs)
927 goto sriov_cfg_exit;
928
929 bnxt_sriov_enable(bp, &num_vfs);
930
931 sriov_cfg_exit:
932 bp->sriov_cfg = false;
933 wake_up(&bp->sriov_cfg_wait);
934
935 return num_vfs;
936 }
937
bnxt_hwrm_fwd_resp(struct bnxt * bp,struct bnxt_vf_info * vf,void * encap_resp,__le64 encap_resp_addr,__le16 encap_resp_cpr,u32 msg_size)938 static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
939 void *encap_resp, __le64 encap_resp_addr,
940 __le16 encap_resp_cpr, u32 msg_size)
941 {
942 struct hwrm_fwd_resp_input *req;
943 int rc;
944
945 if (BNXT_FWD_RESP_SIZE_ERR(msg_size))
946 return -EINVAL;
947
948 rc = hwrm_req_init(bp, req, HWRM_FWD_RESP);
949 if (!rc) {
950 /* Set the new target id */
951 req->target_id = cpu_to_le16(vf->fw_fid);
952 req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
953 req->encap_resp_len = cpu_to_le16(msg_size);
954 req->encap_resp_addr = encap_resp_addr;
955 req->encap_resp_cmpl_ring = encap_resp_cpr;
956 memcpy(req->encap_resp, encap_resp, msg_size);
957
958 rc = hwrm_req_send(bp, req);
959 }
960 if (rc)
961 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
962 return rc;
963 }
964
bnxt_hwrm_fwd_err_resp(struct bnxt * bp,struct bnxt_vf_info * vf,u32 msg_size)965 static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
966 u32 msg_size)
967 {
968 struct hwrm_reject_fwd_resp_input *req;
969 int rc;
970
971 if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
972 return -EINVAL;
973
974 rc = hwrm_req_init(bp, req, HWRM_REJECT_FWD_RESP);
975 if (!rc) {
976 /* Set the new target id */
977 req->target_id = cpu_to_le16(vf->fw_fid);
978 req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
979 memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);
980
981 rc = hwrm_req_send(bp, req);
982 }
983 if (rc)
984 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
985 return rc;
986 }
987
bnxt_hwrm_exec_fwd_resp(struct bnxt * bp,struct bnxt_vf_info * vf,u32 msg_size)988 static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
989 u32 msg_size)
990 {
991 struct hwrm_exec_fwd_resp_input *req;
992 int rc;
993
994 if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
995 return -EINVAL;
996
997 rc = hwrm_req_init(bp, req, HWRM_EXEC_FWD_RESP);
998 if (!rc) {
999 /* Set the new target id */
1000 req->target_id = cpu_to_le16(vf->fw_fid);
1001 req->encap_resp_target_id = cpu_to_le16(vf->fw_fid);
1002 memcpy(req->encap_request, vf->hwrm_cmd_req_addr, msg_size);
1003
1004 rc = hwrm_req_send(bp, req);
1005 }
1006 if (rc)
1007 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
1008 return rc;
1009 }
1010
bnxt_vf_configure_mac(struct bnxt * bp,struct bnxt_vf_info * vf)1011 static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
1012 {
1013 u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
1014 struct hwrm_func_vf_cfg_input *req =
1015 (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;
1016
1017 /* Allow VF to set a valid MAC address, if trust is set to on or
1018 * if the PF assigned MAC address is zero
1019 */
1020 if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
1021 bool trust = bnxt_is_trusted_vf(bp, vf);
1022
1023 if (is_valid_ether_addr(req->dflt_mac_addr) &&
1024 (trust || !is_valid_ether_addr(vf->mac_addr) ||
1025 ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
1026 ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
1027 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1028 }
1029 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1030 }
1031 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1032 }
1033
bnxt_vf_validate_set_mac(struct bnxt * bp,struct bnxt_vf_info * vf)1034 static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
1035 {
1036 u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
1037 struct hwrm_cfa_l2_filter_alloc_input *req =
1038 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
1039 bool mac_ok = false;
1040
1041 if (!is_valid_ether_addr((const u8 *)req->l2_addr))
1042 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1043
1044 /* Allow VF to set a valid MAC address, if trust is set to on.
1045 * Or VF MAC address must first match MAC address in PF's context.
1046 * Otherwise, it must match the VF MAC address if firmware spec >=
1047 * 1.2.2
1048 */
1049 if (bnxt_is_trusted_vf(bp, vf)) {
1050 mac_ok = true;
1051 } else if (is_valid_ether_addr(vf->mac_addr)) {
1052 if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
1053 mac_ok = true;
1054 } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
1055 if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
1056 mac_ok = true;
1057 } else {
1058 /* There are two cases:
1059 * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
1060 * to the PF and so it doesn't have to match
1061 * 2.Allow VF to modify it's own MAC when PF has not assigned a
1062 * valid MAC address and firmware spec >= 0x10202
1063 */
1064 mac_ok = true;
1065 }
1066 if (mac_ok)
1067 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1068 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1069 }
1070
bnxt_vf_set_link(struct bnxt * bp,struct bnxt_vf_info * vf)1071 static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
1072 {
1073 int rc = 0;
1074
1075 if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
1076 /* real link */
1077 rc = bnxt_hwrm_exec_fwd_resp(
1078 bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
1079 } else {
1080 struct hwrm_port_phy_qcfg_output phy_qcfg_resp = {0};
1081 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
1082
1083 phy_qcfg_req =
1084 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
1085 mutex_lock(&bp->link_lock);
1086 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
1087 sizeof(phy_qcfg_resp));
1088 mutex_unlock(&bp->link_lock);
1089 phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
1090 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
1091 phy_qcfg_resp.valid = 1;
1092
1093 if (vf->flags & BNXT_VF_LINK_UP) {
1094 /* if physical link is down, force link up on VF */
1095 if (phy_qcfg_resp.link !=
1096 PORT_PHY_QCFG_RESP_LINK_LINK) {
1097 phy_qcfg_resp.link =
1098 PORT_PHY_QCFG_RESP_LINK_LINK;
1099 phy_qcfg_resp.link_speed = cpu_to_le16(
1100 PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
1101 phy_qcfg_resp.duplex_cfg =
1102 PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
1103 phy_qcfg_resp.duplex_state =
1104 PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
1105 phy_qcfg_resp.pause =
1106 (PORT_PHY_QCFG_RESP_PAUSE_TX |
1107 PORT_PHY_QCFG_RESP_PAUSE_RX);
1108 }
1109 } else {
1110 /* force link down */
1111 phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
1112 phy_qcfg_resp.link_speed = 0;
1113 phy_qcfg_resp.duplex_state =
1114 PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
1115 phy_qcfg_resp.pause = 0;
1116 }
1117 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
1118 phy_qcfg_req->resp_addr,
1119 phy_qcfg_req->cmpl_ring,
1120 sizeof(phy_qcfg_resp));
1121 }
1122 return rc;
1123 }
1124
bnxt_vf_req_validate_snd(struct bnxt * bp,struct bnxt_vf_info * vf)1125 static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
1126 {
1127 int rc = 0;
1128 struct input *encap_req = vf->hwrm_cmd_req_addr;
1129 u32 req_type = le16_to_cpu(encap_req->req_type);
1130
1131 switch (req_type) {
1132 case HWRM_FUNC_VF_CFG:
1133 rc = bnxt_vf_configure_mac(bp, vf);
1134 break;
1135 case HWRM_CFA_L2_FILTER_ALLOC:
1136 rc = bnxt_vf_validate_set_mac(bp, vf);
1137 break;
1138 case HWRM_FUNC_CFG:
1139 /* TODO Validate if VF is allowed to change mac address,
1140 * mtu, num of rings etc
1141 */
1142 rc = bnxt_hwrm_exec_fwd_resp(
1143 bp, vf, sizeof(struct hwrm_func_cfg_input));
1144 break;
1145 case HWRM_PORT_PHY_QCFG:
1146 rc = bnxt_vf_set_link(bp, vf);
1147 break;
1148 default:
1149 break;
1150 }
1151 return rc;
1152 }
1153
bnxt_hwrm_exec_fwd_req(struct bnxt * bp)1154 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1155 {
1156 u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
1157
1158 /* Scan through VF's and process commands */
1159 while (1) {
1160 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
1161 if (vf_id >= active_vfs)
1162 break;
1163
1164 clear_bit(vf_id, bp->pf.vf_event_bmap);
1165 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
1166 i = vf_id + 1;
1167 }
1168 }
1169
bnxt_approve_mac(struct bnxt * bp,const u8 * mac,bool strict)1170 int bnxt_approve_mac(struct bnxt *bp, const u8 *mac, bool strict)
1171 {
1172 struct hwrm_func_vf_cfg_input *req;
1173 int rc = 0;
1174
1175 if (!BNXT_VF(bp))
1176 return 0;
1177
1178 if (bp->hwrm_spec_code < 0x10202) {
1179 if (is_valid_ether_addr(bp->vf.mac_addr))
1180 rc = -EADDRNOTAVAIL;
1181 goto mac_done;
1182 }
1183
1184 rc = hwrm_req_init(bp, req, HWRM_FUNC_VF_CFG);
1185 if (rc)
1186 goto mac_done;
1187
1188 req->enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
1189 memcpy(req->dflt_mac_addr, mac, ETH_ALEN);
1190 if (!strict)
1191 hwrm_req_flags(bp, req, BNXT_HWRM_CTX_SILENT);
1192 rc = hwrm_req_send(bp, req);
1193 mac_done:
1194 if (rc && strict) {
1195 rc = -EADDRNOTAVAIL;
1196 netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
1197 mac);
1198 return rc;
1199 }
1200 return 0;
1201 }
1202
bnxt_update_vf_mac(struct bnxt * bp)1203 void bnxt_update_vf_mac(struct bnxt *bp)
1204 {
1205 struct hwrm_func_qcaps_output *resp;
1206 struct hwrm_func_qcaps_input *req;
1207 bool inform_pf = false;
1208
1209 if (hwrm_req_init(bp, req, HWRM_FUNC_QCAPS))
1210 return;
1211
1212 req->fid = cpu_to_le16(0xffff);
1213
1214 resp = hwrm_req_hold(bp, req);
1215 if (hwrm_req_send(bp, req))
1216 goto update_vf_mac_exit;
1217
1218 /* Store MAC address from the firmware. There are 2 cases:
1219 * 1. MAC address is valid. It is assigned from the PF and we
1220 * need to override the current VF MAC address with it.
1221 * 2. MAC address is zero. The VF will use a random MAC address by
1222 * default but the stored zero MAC will allow the VF user to change
1223 * the random MAC address using ndo_set_mac_address() if he wants.
1224 */
1225 if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr)) {
1226 memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
1227 /* This means we are now using our own MAC address, let
1228 * the PF know about this MAC address.
1229 */
1230 if (!is_valid_ether_addr(bp->vf.mac_addr))
1231 inform_pf = true;
1232 }
1233
1234 /* overwrite netdev dev_addr with admin VF MAC */
1235 if (is_valid_ether_addr(bp->vf.mac_addr))
1236 eth_hw_addr_set(bp->dev, bp->vf.mac_addr);
1237 update_vf_mac_exit:
1238 hwrm_req_drop(bp, req);
1239 if (inform_pf)
1240 bnxt_approve_mac(bp, bp->dev->dev_addr, false);
1241 }
1242
1243 #else
1244
bnxt_cfg_hw_sriov(struct bnxt * bp,int * num_vfs,bool reset)1245 int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
1246 {
1247 if (*num_vfs)
1248 return -EOPNOTSUPP;
1249 return 0;
1250 }
1251
bnxt_sriov_disable(struct bnxt * bp)1252 void bnxt_sriov_disable(struct bnxt *bp)
1253 {
1254 }
1255
bnxt_hwrm_exec_fwd_req(struct bnxt * bp)1256 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1257 {
1258 netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
1259 }
1260
bnxt_update_vf_mac(struct bnxt * bp)1261 void bnxt_update_vf_mac(struct bnxt *bp)
1262 {
1263 }
1264
bnxt_approve_mac(struct bnxt * bp,const u8 * mac,bool strict)1265 int bnxt_approve_mac(struct bnxt *bp, const u8 *mac, bool strict)
1266 {
1267 return 0;
1268 }
1269 #endif
1270