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/module.h>
12 #include <linux/pci.h>
13 #include <linux/netdevice.h>
14 #include <linux/if_vlan.h>
15 #include <linux/interrupt.h>
16 #include <linux/etherdevice.h>
17 #include "bnxt_hsi.h"
18 #include "bnxt.h"
19 #include "bnxt_ulp.h"
20 #include "bnxt_sriov.h"
21 #include "bnxt_vfr.h"
22 #include "bnxt_ethtool.h"
23
24 #ifdef CONFIG_BNXT_SRIOV
bnxt_hwrm_fwd_async_event_cmpl(struct bnxt * bp,struct bnxt_vf_info * vf,u16 event_id)25 static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
26 struct bnxt_vf_info *vf, u16 event_id)
27 {
28 struct hwrm_fwd_async_event_cmpl_input req = {0};
29 struct hwrm_async_event_cmpl *async_cmpl;
30 int rc = 0;
31
32 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_ASYNC_EVENT_CMPL, -1, -1);
33 if (vf)
34 req.encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
35 else
36 /* broadcast this async event to all VFs */
37 req.encap_async_event_target_id = cpu_to_le16(0xffff);
38 async_cmpl = (struct hwrm_async_event_cmpl *)req.encap_async_event_cmpl;
39 async_cmpl->type = cpu_to_le16(ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
40 async_cmpl->event_id = cpu_to_le16(event_id);
41
42 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
43 if (rc)
44 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
45 rc);
46 return rc;
47 }
48
bnxt_vf_ndo_prep(struct bnxt * bp,int vf_id)49 static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
50 {
51 if (!test_bit(BNXT_STATE_OPEN, &bp->state)) {
52 netdev_err(bp->dev, "vf ndo called though PF is down\n");
53 return -EINVAL;
54 }
55 if (!bp->pf.active_vfs) {
56 netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
57 return -EINVAL;
58 }
59 if (vf_id >= bp->pf.active_vfs) {
60 netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
61 return -EINVAL;
62 }
63 return 0;
64 }
65
bnxt_set_vf_spoofchk(struct net_device * dev,int vf_id,bool setting)66 int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
67 {
68 struct hwrm_func_cfg_input req = {0};
69 struct bnxt *bp = netdev_priv(dev);
70 struct bnxt_vf_info *vf;
71 bool old_setting = false;
72 u32 func_flags;
73 int rc;
74
75 if (bp->hwrm_spec_code < 0x10701)
76 return -ENOTSUPP;
77
78 rc = bnxt_vf_ndo_prep(bp, vf_id);
79 if (rc)
80 return rc;
81
82 vf = &bp->pf.vf[vf_id];
83 if (vf->flags & BNXT_VF_SPOOFCHK)
84 old_setting = true;
85 if (old_setting == setting)
86 return 0;
87
88 if (setting)
89 func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_ENABLE;
90 else
91 func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_DISABLE;
92 /*TODO: if the driver supports VLAN filter on guest VLAN,
93 * the spoof check should also include vlan anti-spoofing
94 */
95 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
96 req.fid = cpu_to_le16(vf->fw_fid);
97 req.flags = cpu_to_le32(func_flags);
98 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
99 if (!rc) {
100 if (setting)
101 vf->flags |= BNXT_VF_SPOOFCHK;
102 else
103 vf->flags &= ~BNXT_VF_SPOOFCHK;
104 }
105 return rc;
106 }
107
bnxt_hwrm_func_qcfg_flags(struct bnxt * bp,struct bnxt_vf_info * vf)108 static int bnxt_hwrm_func_qcfg_flags(struct bnxt *bp, struct bnxt_vf_info *vf)
109 {
110 struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
111 struct hwrm_func_qcfg_input req = {0};
112 int rc;
113
114 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCFG, -1, -1);
115 req.fid = cpu_to_le16(vf->fw_fid);
116 mutex_lock(&bp->hwrm_cmd_lock);
117 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
118 if (rc) {
119 mutex_unlock(&bp->hwrm_cmd_lock);
120 return rc;
121 }
122 vf->func_qcfg_flags = le16_to_cpu(resp->flags);
123 mutex_unlock(&bp->hwrm_cmd_lock);
124 return 0;
125 }
126
bnxt_is_trusted_vf(struct bnxt * bp,struct bnxt_vf_info * vf)127 static bool bnxt_is_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
128 {
129 if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
130 return !!(vf->flags & BNXT_VF_TRUST);
131
132 bnxt_hwrm_func_qcfg_flags(bp, vf);
133 return !!(vf->func_qcfg_flags & FUNC_QCFG_RESP_FLAGS_TRUSTED_VF);
134 }
135
bnxt_hwrm_set_trusted_vf(struct bnxt * bp,struct bnxt_vf_info * vf)136 static int bnxt_hwrm_set_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
137 {
138 struct hwrm_func_cfg_input req = {0};
139
140 if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
141 return 0;
142
143 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
144 req.fid = cpu_to_le16(vf->fw_fid);
145 if (vf->flags & BNXT_VF_TRUST)
146 req.flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
147 else
148 req.flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_DISABLE);
149 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
150 }
151
bnxt_set_vf_trust(struct net_device * dev,int vf_id,bool trusted)152 int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
153 {
154 struct bnxt *bp = netdev_priv(dev);
155 struct bnxt_vf_info *vf;
156
157 if (bnxt_vf_ndo_prep(bp, vf_id))
158 return -EINVAL;
159
160 vf = &bp->pf.vf[vf_id];
161 if (trusted)
162 vf->flags |= BNXT_VF_TRUST;
163 else
164 vf->flags &= ~BNXT_VF_TRUST;
165
166 bnxt_hwrm_set_trusted_vf(bp, vf);
167 return 0;
168 }
169
bnxt_get_vf_config(struct net_device * dev,int vf_id,struct ifla_vf_info * ivi)170 int bnxt_get_vf_config(struct net_device *dev, int vf_id,
171 struct ifla_vf_info *ivi)
172 {
173 struct bnxt *bp = netdev_priv(dev);
174 struct bnxt_vf_info *vf;
175 int rc;
176
177 rc = bnxt_vf_ndo_prep(bp, vf_id);
178 if (rc)
179 return rc;
180
181 ivi->vf = vf_id;
182 vf = &bp->pf.vf[vf_id];
183
184 if (is_valid_ether_addr(vf->mac_addr))
185 memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
186 else
187 memcpy(&ivi->mac, vf->vf_mac_addr, ETH_ALEN);
188 ivi->max_tx_rate = vf->max_tx_rate;
189 ivi->min_tx_rate = vf->min_tx_rate;
190 ivi->vlan = vf->vlan;
191 if (vf->flags & BNXT_VF_QOS)
192 ivi->qos = vf->vlan >> VLAN_PRIO_SHIFT;
193 else
194 ivi->qos = 0;
195 ivi->spoofchk = !!(vf->flags & BNXT_VF_SPOOFCHK);
196 ivi->trusted = bnxt_is_trusted_vf(bp, vf);
197 if (!(vf->flags & BNXT_VF_LINK_FORCED))
198 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
199 else if (vf->flags & BNXT_VF_LINK_UP)
200 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
201 else
202 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
203
204 return 0;
205 }
206
bnxt_set_vf_mac(struct net_device * dev,int vf_id,u8 * mac)207 int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
208 {
209 struct hwrm_func_cfg_input req = {0};
210 struct bnxt *bp = netdev_priv(dev);
211 struct bnxt_vf_info *vf;
212 int rc;
213
214 rc = bnxt_vf_ndo_prep(bp, vf_id);
215 if (rc)
216 return rc;
217 /* reject bc or mc mac addr, zero mac addr means allow
218 * VF to use its own mac addr
219 */
220 if (is_multicast_ether_addr(mac)) {
221 netdev_err(dev, "Invalid VF ethernet address\n");
222 return -EINVAL;
223 }
224 vf = &bp->pf.vf[vf_id];
225
226 memcpy(vf->mac_addr, mac, ETH_ALEN);
227 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
228 req.fid = cpu_to_le16(vf->fw_fid);
229 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
230 memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
231 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
232 }
233
bnxt_set_vf_vlan(struct net_device * dev,int vf_id,u16 vlan_id,u8 qos,__be16 vlan_proto)234 int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
235 __be16 vlan_proto)
236 {
237 struct hwrm_func_cfg_input req = {0};
238 struct bnxt *bp = netdev_priv(dev);
239 struct bnxt_vf_info *vf;
240 u16 vlan_tag;
241 int rc;
242
243 if (bp->hwrm_spec_code < 0x10201)
244 return -ENOTSUPP;
245
246 if (vlan_proto != htons(ETH_P_8021Q))
247 return -EPROTONOSUPPORT;
248
249 rc = bnxt_vf_ndo_prep(bp, vf_id);
250 if (rc)
251 return rc;
252
253 /* TODO: needed to implement proper handling of user priority,
254 * currently fail the command if there is valid priority
255 */
256 if (vlan_id > 4095 || qos)
257 return -EINVAL;
258
259 vf = &bp->pf.vf[vf_id];
260 vlan_tag = vlan_id;
261 if (vlan_tag == vf->vlan)
262 return 0;
263
264 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
265 req.fid = cpu_to_le16(vf->fw_fid);
266 req.dflt_vlan = cpu_to_le16(vlan_tag);
267 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
268 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
269 if (!rc)
270 vf->vlan = vlan_tag;
271 return rc;
272 }
273
bnxt_set_vf_bw(struct net_device * dev,int vf_id,int min_tx_rate,int max_tx_rate)274 int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
275 int max_tx_rate)
276 {
277 struct hwrm_func_cfg_input req = {0};
278 struct bnxt *bp = netdev_priv(dev);
279 struct bnxt_vf_info *vf;
280 u32 pf_link_speed;
281 int rc;
282
283 rc = bnxt_vf_ndo_prep(bp, vf_id);
284 if (rc)
285 return rc;
286
287 vf = &bp->pf.vf[vf_id];
288 pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
289 if (max_tx_rate > pf_link_speed) {
290 netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
291 max_tx_rate, vf_id);
292 return -EINVAL;
293 }
294
295 if (min_tx_rate > pf_link_speed || min_tx_rate > max_tx_rate) {
296 netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
297 min_tx_rate, vf_id);
298 return -EINVAL;
299 }
300 if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
301 return 0;
302 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
303 req.fid = cpu_to_le16(vf->fw_fid);
304 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
305 req.max_bw = cpu_to_le32(max_tx_rate);
306 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
307 req.min_bw = cpu_to_le32(min_tx_rate);
308 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
309 if (!rc) {
310 vf->min_tx_rate = min_tx_rate;
311 vf->max_tx_rate = max_tx_rate;
312 }
313 return rc;
314 }
315
bnxt_set_vf_link_state(struct net_device * dev,int vf_id,int link)316 int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
317 {
318 struct bnxt *bp = netdev_priv(dev);
319 struct bnxt_vf_info *vf;
320 int rc;
321
322 rc = bnxt_vf_ndo_prep(bp, vf_id);
323 if (rc)
324 return rc;
325
326 vf = &bp->pf.vf[vf_id];
327
328 vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
329 switch (link) {
330 case IFLA_VF_LINK_STATE_AUTO:
331 vf->flags |= BNXT_VF_LINK_UP;
332 break;
333 case IFLA_VF_LINK_STATE_DISABLE:
334 vf->flags |= BNXT_VF_LINK_FORCED;
335 break;
336 case IFLA_VF_LINK_STATE_ENABLE:
337 vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
338 break;
339 default:
340 netdev_err(bp->dev, "Invalid link option\n");
341 rc = -EINVAL;
342 break;
343 }
344 if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED))
345 rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf,
346 ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE);
347 return rc;
348 }
349
bnxt_set_vf_attr(struct bnxt * bp,int num_vfs)350 static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
351 {
352 int i;
353 struct bnxt_vf_info *vf;
354
355 for (i = 0; i < num_vfs; i++) {
356 vf = &bp->pf.vf[i];
357 memset(vf, 0, sizeof(*vf));
358 }
359 return 0;
360 }
361
bnxt_hwrm_func_vf_resource_free(struct bnxt * bp,int num_vfs)362 static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
363 {
364 int i, rc = 0;
365 struct bnxt_pf_info *pf = &bp->pf;
366 struct hwrm_func_vf_resc_free_input req = {0};
367
368 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESC_FREE, -1, -1);
369
370 mutex_lock(&bp->hwrm_cmd_lock);
371 for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
372 req.vf_id = cpu_to_le16(i);
373 rc = _hwrm_send_message(bp, &req, sizeof(req),
374 HWRM_CMD_TIMEOUT);
375 if (rc)
376 break;
377 }
378 mutex_unlock(&bp->hwrm_cmd_lock);
379 return rc;
380 }
381
bnxt_free_vf_resources(struct bnxt * bp)382 static void bnxt_free_vf_resources(struct bnxt *bp)
383 {
384 struct pci_dev *pdev = bp->pdev;
385 int i;
386
387 kfree(bp->pf.vf_event_bmap);
388 bp->pf.vf_event_bmap = NULL;
389
390 for (i = 0; i < 4; i++) {
391 if (bp->pf.hwrm_cmd_req_addr[i]) {
392 dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
393 bp->pf.hwrm_cmd_req_addr[i],
394 bp->pf.hwrm_cmd_req_dma_addr[i]);
395 bp->pf.hwrm_cmd_req_addr[i] = NULL;
396 }
397 }
398
399 bp->pf.active_vfs = 0;
400 kfree(bp->pf.vf);
401 bp->pf.vf = NULL;
402 }
403
bnxt_alloc_vf_resources(struct bnxt * bp,int num_vfs)404 static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
405 {
406 struct pci_dev *pdev = bp->pdev;
407 u32 nr_pages, size, i, j, k = 0;
408
409 bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
410 if (!bp->pf.vf)
411 return -ENOMEM;
412
413 bnxt_set_vf_attr(bp, num_vfs);
414
415 size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
416 nr_pages = size / BNXT_PAGE_SIZE;
417 if (size & (BNXT_PAGE_SIZE - 1))
418 nr_pages++;
419
420 for (i = 0; i < nr_pages; i++) {
421 bp->pf.hwrm_cmd_req_addr[i] =
422 dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
423 &bp->pf.hwrm_cmd_req_dma_addr[i],
424 GFP_KERNEL);
425
426 if (!bp->pf.hwrm_cmd_req_addr[i])
427 return -ENOMEM;
428
429 for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
430 struct bnxt_vf_info *vf = &bp->pf.vf[k];
431
432 vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
433 j * BNXT_HWRM_REQ_MAX_SIZE;
434 vf->hwrm_cmd_req_dma_addr =
435 bp->pf.hwrm_cmd_req_dma_addr[i] + j *
436 BNXT_HWRM_REQ_MAX_SIZE;
437 k++;
438 }
439 }
440
441 /* Max 128 VF's */
442 bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
443 if (!bp->pf.vf_event_bmap)
444 return -ENOMEM;
445
446 bp->pf.hwrm_cmd_req_pages = nr_pages;
447 return 0;
448 }
449
bnxt_hwrm_func_buf_rgtr(struct bnxt * bp)450 static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
451 {
452 struct hwrm_func_buf_rgtr_input req = {0};
453
454 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BUF_RGTR, -1, -1);
455
456 req.req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
457 req.req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
458 req.req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
459 req.req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
460 req.req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
461 req.req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
462 req.req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
463
464 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
465 }
466
467 /* Caller holds bp->hwrm_cmd_lock mutex lock */
__bnxt_set_vf_params(struct bnxt * bp,int vf_id)468 static void __bnxt_set_vf_params(struct bnxt *bp, int vf_id)
469 {
470 struct hwrm_func_cfg_input req = {0};
471 struct bnxt_vf_info *vf;
472
473 vf = &bp->pf.vf[vf_id];
474 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
475 req.fid = cpu_to_le16(vf->fw_fid);
476
477 if (is_valid_ether_addr(vf->mac_addr)) {
478 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
479 memcpy(req.dflt_mac_addr, vf->mac_addr, ETH_ALEN);
480 }
481 if (vf->vlan) {
482 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
483 req.dflt_vlan = cpu_to_le16(vf->vlan);
484 }
485 if (vf->max_tx_rate) {
486 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
487 req.max_bw = cpu_to_le32(vf->max_tx_rate);
488 #ifdef HAVE_IFLA_TX_RATE
489 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
490 req.min_bw = cpu_to_le32(vf->min_tx_rate);
491 #endif
492 }
493 if (vf->flags & BNXT_VF_TRUST)
494 req.flags |= cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
495
496 _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
497 }
498
499 /* Only called by PF to reserve resources for VFs, returns actual number of
500 * VFs configured, or < 0 on error.
501 */
bnxt_hwrm_func_vf_resc_cfg(struct bnxt * bp,int num_vfs,bool reset)502 static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
503 {
504 struct hwrm_func_vf_resource_cfg_input req = {0};
505 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
506 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings;
507 u16 vf_stat_ctx, vf_vnics, vf_ring_grps;
508 struct bnxt_pf_info *pf = &bp->pf;
509 int i, rc = 0, min = 1;
510 u16 vf_msix = 0;
511 u16 vf_rss;
512
513 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1);
514
515 if (bp->flags & BNXT_FLAG_CHIP_P5) {
516 vf_msix = hw_resc->max_nqs - bnxt_nq_rings_in_use(bp);
517 vf_ring_grps = 0;
518 } else {
519 vf_ring_grps = hw_resc->max_hw_ring_grps - bp->rx_nr_rings;
520 }
521 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp);
522 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp);
523 if (bp->flags & BNXT_FLAG_AGG_RINGS)
524 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
525 else
526 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings;
527 vf_tx_rings = hw_resc->max_tx_rings - bp->tx_nr_rings;
528 vf_vnics = hw_resc->max_vnics - bp->nr_vnics;
529 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
530 vf_rss = hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs;
531
532 req.min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
533 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
534 min = 0;
535 req.min_rsscos_ctx = cpu_to_le16(min);
536 }
537 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
538 pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
539 req.min_cmpl_rings = cpu_to_le16(min);
540 req.min_tx_rings = cpu_to_le16(min);
541 req.min_rx_rings = cpu_to_le16(min);
542 req.min_l2_ctxs = cpu_to_le16(min);
543 req.min_vnics = cpu_to_le16(min);
544 req.min_stat_ctx = cpu_to_le16(min);
545 if (!(bp->flags & BNXT_FLAG_CHIP_P5))
546 req.min_hw_ring_grps = cpu_to_le16(min);
547 } else {
548 vf_cp_rings /= num_vfs;
549 vf_tx_rings /= num_vfs;
550 vf_rx_rings /= num_vfs;
551 vf_vnics /= num_vfs;
552 vf_stat_ctx /= num_vfs;
553 vf_ring_grps /= num_vfs;
554 vf_rss /= num_vfs;
555
556 req.min_cmpl_rings = cpu_to_le16(vf_cp_rings);
557 req.min_tx_rings = cpu_to_le16(vf_tx_rings);
558 req.min_rx_rings = cpu_to_le16(vf_rx_rings);
559 req.min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
560 req.min_vnics = cpu_to_le16(vf_vnics);
561 req.min_stat_ctx = cpu_to_le16(vf_stat_ctx);
562 req.min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
563 req.min_rsscos_ctx = cpu_to_le16(vf_rss);
564 }
565 req.max_cmpl_rings = cpu_to_le16(vf_cp_rings);
566 req.max_tx_rings = cpu_to_le16(vf_tx_rings);
567 req.max_rx_rings = cpu_to_le16(vf_rx_rings);
568 req.max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
569 req.max_vnics = cpu_to_le16(vf_vnics);
570 req.max_stat_ctx = cpu_to_le16(vf_stat_ctx);
571 req.max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
572 req.max_rsscos_ctx = cpu_to_le16(vf_rss);
573 if (bp->flags & BNXT_FLAG_CHIP_P5)
574 req.max_msix = cpu_to_le16(vf_msix / num_vfs);
575
576 mutex_lock(&bp->hwrm_cmd_lock);
577 for (i = 0; i < num_vfs; i++) {
578 if (reset)
579 __bnxt_set_vf_params(bp, i);
580
581 req.vf_id = cpu_to_le16(pf->first_vf_id + i);
582 rc = _hwrm_send_message(bp, &req, sizeof(req),
583 HWRM_CMD_TIMEOUT);
584 if (rc)
585 break;
586 pf->active_vfs = i + 1;
587 pf->vf[i].fw_fid = pf->first_vf_id + i;
588 }
589 mutex_unlock(&bp->hwrm_cmd_lock);
590 if (pf->active_vfs) {
591 u16 n = pf->active_vfs;
592
593 hw_resc->max_tx_rings -= le16_to_cpu(req.min_tx_rings) * n;
594 hw_resc->max_rx_rings -= le16_to_cpu(req.min_rx_rings) * n;
595 hw_resc->max_hw_ring_grps -= le16_to_cpu(req.min_hw_ring_grps) *
596 n;
597 hw_resc->max_cp_rings -= le16_to_cpu(req.min_cmpl_rings) * n;
598 hw_resc->max_rsscos_ctxs -= le16_to_cpu(req.min_rsscos_ctx) * n;
599 hw_resc->max_stat_ctxs -= le16_to_cpu(req.min_stat_ctx) * n;
600 hw_resc->max_vnics -= le16_to_cpu(req.min_vnics) * n;
601 if (bp->flags & BNXT_FLAG_CHIP_P5)
602 hw_resc->max_irqs -= vf_msix * n;
603
604 rc = pf->active_vfs;
605 }
606 return rc;
607 }
608
609 /* Only called by PF to reserve resources for VFs, returns actual number of
610 * VFs configured, or < 0 on error.
611 */
bnxt_hwrm_func_cfg(struct bnxt * bp,int num_vfs)612 static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
613 {
614 u32 rc = 0, mtu, i;
615 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
616 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
617 struct hwrm_func_cfg_input req = {0};
618 struct bnxt_pf_info *pf = &bp->pf;
619 int total_vf_tx_rings = 0;
620 u16 vf_ring_grps;
621
622 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
623
624 /* Remaining rings are distributed equally amongs VF's for now */
625 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
626 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp) / num_vfs;
627 if (bp->flags & BNXT_FLAG_AGG_RINGS)
628 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
629 num_vfs;
630 else
631 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
632 num_vfs;
633 vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
634 vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
635 vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
636 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
637
638 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
639 FUNC_CFG_REQ_ENABLES_MRU |
640 FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
641 FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
642 FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
643 FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
644 FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
645 FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
646 FUNC_CFG_REQ_ENABLES_NUM_VNICS |
647 FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
648
649 mtu = bp->dev->mtu + ETH_HLEN + VLAN_HLEN;
650 req.mru = cpu_to_le16(mtu);
651 req.mtu = cpu_to_le16(mtu);
652
653 req.num_rsscos_ctxs = cpu_to_le16(1);
654 req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
655 req.num_tx_rings = cpu_to_le16(vf_tx_rings);
656 req.num_rx_rings = cpu_to_le16(vf_rx_rings);
657 req.num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
658 req.num_l2_ctxs = cpu_to_le16(4);
659
660 req.num_vnics = cpu_to_le16(vf_vnics);
661 /* FIXME spec currently uses 1 bit for stats ctx */
662 req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
663
664 mutex_lock(&bp->hwrm_cmd_lock);
665 for (i = 0; i < num_vfs; i++) {
666 int vf_tx_rsvd = vf_tx_rings;
667
668 req.fid = cpu_to_le16(pf->first_vf_id + i);
669 rc = _hwrm_send_message(bp, &req, sizeof(req),
670 HWRM_CMD_TIMEOUT);
671 if (rc)
672 break;
673 pf->active_vfs = i + 1;
674 pf->vf[i].fw_fid = le16_to_cpu(req.fid);
675 rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
676 &vf_tx_rsvd);
677 if (rc)
678 break;
679 total_vf_tx_rings += vf_tx_rsvd;
680 }
681 mutex_unlock(&bp->hwrm_cmd_lock);
682 if (pf->active_vfs) {
683 hw_resc->max_tx_rings -= total_vf_tx_rings;
684 hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
685 hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
686 hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
687 hw_resc->max_rsscos_ctxs -= num_vfs;
688 hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
689 hw_resc->max_vnics -= vf_vnics * num_vfs;
690 rc = pf->active_vfs;
691 }
692 return rc;
693 }
694
bnxt_func_cfg(struct bnxt * bp,int num_vfs,bool reset)695 static int bnxt_func_cfg(struct bnxt *bp, int num_vfs, bool reset)
696 {
697 if (BNXT_NEW_RM(bp))
698 return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs, reset);
699 else
700 return bnxt_hwrm_func_cfg(bp, num_vfs);
701 }
702
bnxt_cfg_hw_sriov(struct bnxt * bp,int * num_vfs,bool reset)703 int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
704 {
705 int rc;
706
707 /* Register buffers for VFs */
708 rc = bnxt_hwrm_func_buf_rgtr(bp);
709 if (rc)
710 return rc;
711
712 /* Reserve resources for VFs */
713 rc = bnxt_func_cfg(bp, *num_vfs, reset);
714 if (rc != *num_vfs) {
715 if (rc <= 0) {
716 netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
717 *num_vfs = 0;
718 return rc;
719 }
720 netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n",
721 rc);
722 *num_vfs = rc;
723 }
724
725 bnxt_ulp_sriov_cfg(bp, *num_vfs);
726 return 0;
727 }
728
bnxt_sriov_enable(struct bnxt * bp,int * num_vfs)729 static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
730 {
731 int rc = 0, vfs_supported;
732 int min_rx_rings, min_tx_rings, min_rss_ctxs;
733 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
734 int tx_ok = 0, rx_ok = 0, rss_ok = 0;
735 int avail_cp, avail_stat;
736
737 /* Check if we can enable requested num of vf's. At a mininum
738 * we require 1 RX 1 TX rings for each VF. In this minimum conf
739 * features like TPA will not be available.
740 */
741 vfs_supported = *num_vfs;
742
743 avail_cp = bnxt_get_avail_cp_rings_for_en(bp);
744 avail_stat = bnxt_get_avail_stat_ctxs_for_en(bp);
745 avail_cp = min_t(int, avail_cp, avail_stat);
746
747 while (vfs_supported) {
748 min_rx_rings = vfs_supported;
749 min_tx_rings = vfs_supported;
750 min_rss_ctxs = vfs_supported;
751
752 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
753 if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
754 min_rx_rings)
755 rx_ok = 1;
756 } else {
757 if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
758 min_rx_rings)
759 rx_ok = 1;
760 }
761 if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
762 avail_cp < min_rx_rings)
763 rx_ok = 0;
764
765 if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
766 avail_cp >= min_tx_rings)
767 tx_ok = 1;
768
769 if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
770 min_rss_ctxs)
771 rss_ok = 1;
772
773 if (tx_ok && rx_ok && rss_ok)
774 break;
775
776 vfs_supported--;
777 }
778
779 if (!vfs_supported) {
780 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
781 return -EINVAL;
782 }
783
784 if (vfs_supported != *num_vfs) {
785 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
786 *num_vfs, vfs_supported);
787 *num_vfs = vfs_supported;
788 }
789
790 rc = bnxt_alloc_vf_resources(bp, *num_vfs);
791 if (rc)
792 goto err_out1;
793
794 rc = bnxt_cfg_hw_sriov(bp, num_vfs, false);
795 if (rc)
796 goto err_out2;
797
798 rc = pci_enable_sriov(bp->pdev, *num_vfs);
799 if (rc)
800 goto err_out2;
801
802 return 0;
803
804 err_out2:
805 /* Free the resources reserved for various VF's */
806 bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
807
808 err_out1:
809 bnxt_free_vf_resources(bp);
810
811 return rc;
812 }
813
bnxt_sriov_disable(struct bnxt * bp)814 void bnxt_sriov_disable(struct bnxt *bp)
815 {
816 u16 num_vfs = pci_num_vf(bp->pdev);
817
818 if (!num_vfs)
819 return;
820
821 /* synchronize VF and VF-rep create and destroy */
822 mutex_lock(&bp->sriov_lock);
823 bnxt_vf_reps_destroy(bp);
824
825 if (pci_vfs_assigned(bp->pdev)) {
826 bnxt_hwrm_fwd_async_event_cmpl(
827 bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
828 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
829 num_vfs);
830 } else {
831 pci_disable_sriov(bp->pdev);
832 /* Free the HW resources reserved for various VF's */
833 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
834 }
835 mutex_unlock(&bp->sriov_lock);
836
837 bnxt_free_vf_resources(bp);
838
839 /* Reclaim all resources for the PF. */
840 rtnl_lock();
841 bnxt_restore_pf_fw_resources(bp);
842 rtnl_unlock();
843
844 bnxt_ulp_sriov_cfg(bp, 0);
845 }
846
bnxt_sriov_configure(struct pci_dev * pdev,int num_vfs)847 int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
848 {
849 struct net_device *dev = pci_get_drvdata(pdev);
850 struct bnxt *bp = netdev_priv(dev);
851
852 if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
853 netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
854 return 0;
855 }
856
857 rtnl_lock();
858 if (!netif_running(dev)) {
859 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
860 rtnl_unlock();
861 return 0;
862 }
863 if (test_bit(BNXT_STATE_IN_FW_RESET, &bp->state)) {
864 netdev_warn(dev, "Reject SRIOV config request when FW reset is in progress\n");
865 rtnl_unlock();
866 return 0;
867 }
868 bp->sriov_cfg = true;
869 rtnl_unlock();
870
871 if (pci_vfs_assigned(bp->pdev)) {
872 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
873 num_vfs = 0;
874 goto sriov_cfg_exit;
875 }
876
877 /* Check if enabled VFs is same as requested */
878 if (num_vfs && num_vfs == bp->pf.active_vfs)
879 goto sriov_cfg_exit;
880
881 /* if there are previous existing VFs, clean them up */
882 bnxt_sriov_disable(bp);
883 if (!num_vfs)
884 goto sriov_cfg_exit;
885
886 bnxt_sriov_enable(bp, &num_vfs);
887
888 sriov_cfg_exit:
889 bp->sriov_cfg = false;
890 wake_up(&bp->sriov_cfg_wait);
891
892 return num_vfs;
893 }
894
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)895 static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
896 void *encap_resp, __le64 encap_resp_addr,
897 __le16 encap_resp_cpr, u32 msg_size)
898 {
899 int rc = 0;
900 struct hwrm_fwd_resp_input req = {0};
901
902 if (BNXT_FWD_RESP_SIZE_ERR(msg_size))
903 return -EINVAL;
904
905 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
906
907 /* Set the new target id */
908 req.target_id = cpu_to_le16(vf->fw_fid);
909 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
910 req.encap_resp_len = cpu_to_le16(msg_size);
911 req.encap_resp_addr = encap_resp_addr;
912 req.encap_resp_cmpl_ring = encap_resp_cpr;
913 memcpy(req.encap_resp, encap_resp, msg_size);
914
915 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
916 if (rc)
917 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
918 return rc;
919 }
920
bnxt_hwrm_fwd_err_resp(struct bnxt * bp,struct bnxt_vf_info * vf,u32 msg_size)921 static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
922 u32 msg_size)
923 {
924 int rc = 0;
925 struct hwrm_reject_fwd_resp_input req = {0};
926
927 if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
928 return -EINVAL;
929
930 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
931 /* Set the new target id */
932 req.target_id = cpu_to_le16(vf->fw_fid);
933 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
934 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
935
936 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
937 if (rc)
938 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
939 return rc;
940 }
941
bnxt_hwrm_exec_fwd_resp(struct bnxt * bp,struct bnxt_vf_info * vf,u32 msg_size)942 static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
943 u32 msg_size)
944 {
945 int rc = 0;
946 struct hwrm_exec_fwd_resp_input req = {0};
947
948 if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
949 return -EINVAL;
950
951 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
952 /* Set the new target id */
953 req.target_id = cpu_to_le16(vf->fw_fid);
954 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
955 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
956
957 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
958 if (rc)
959 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
960 return rc;
961 }
962
bnxt_vf_configure_mac(struct bnxt * bp,struct bnxt_vf_info * vf)963 static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
964 {
965 u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
966 struct hwrm_func_vf_cfg_input *req =
967 (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;
968
969 /* Allow VF to set a valid MAC address, if trust is set to on or
970 * if the PF assigned MAC address is zero
971 */
972 if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
973 bool trust = bnxt_is_trusted_vf(bp, vf);
974
975 if (is_valid_ether_addr(req->dflt_mac_addr) &&
976 (trust || !is_valid_ether_addr(vf->mac_addr) ||
977 ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
978 ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
979 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
980 }
981 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
982 }
983 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
984 }
985
bnxt_vf_validate_set_mac(struct bnxt * bp,struct bnxt_vf_info * vf)986 static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
987 {
988 u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
989 struct hwrm_cfa_l2_filter_alloc_input *req =
990 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
991 bool mac_ok = false;
992
993 if (!is_valid_ether_addr((const u8 *)req->l2_addr))
994 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
995
996 /* Allow VF to set a valid MAC address, if trust is set to on.
997 * Or VF MAC address must first match MAC address in PF's context.
998 * Otherwise, it must match the VF MAC address if firmware spec >=
999 * 1.2.2
1000 */
1001 if (bnxt_is_trusted_vf(bp, vf)) {
1002 mac_ok = true;
1003 } else if (is_valid_ether_addr(vf->mac_addr)) {
1004 if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
1005 mac_ok = true;
1006 } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
1007 if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
1008 mac_ok = true;
1009 } else {
1010 /* There are two cases:
1011 * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
1012 * to the PF and so it doesn't have to match
1013 * 2.Allow VF to modify it's own MAC when PF has not assigned a
1014 * valid MAC address and firmware spec >= 0x10202
1015 */
1016 mac_ok = true;
1017 }
1018 if (mac_ok)
1019 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1020 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1021 }
1022
bnxt_vf_set_link(struct bnxt * bp,struct bnxt_vf_info * vf)1023 static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
1024 {
1025 int rc = 0;
1026
1027 if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
1028 /* real link */
1029 rc = bnxt_hwrm_exec_fwd_resp(
1030 bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
1031 } else {
1032 struct hwrm_port_phy_qcfg_output phy_qcfg_resp = {0};
1033 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
1034
1035 phy_qcfg_req =
1036 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
1037 mutex_lock(&bp->hwrm_cmd_lock);
1038 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
1039 sizeof(phy_qcfg_resp));
1040 mutex_unlock(&bp->hwrm_cmd_lock);
1041 phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
1042 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
1043 phy_qcfg_resp.valid = 1;
1044
1045 if (vf->flags & BNXT_VF_LINK_UP) {
1046 /* if physical link is down, force link up on VF */
1047 if (phy_qcfg_resp.link !=
1048 PORT_PHY_QCFG_RESP_LINK_LINK) {
1049 phy_qcfg_resp.link =
1050 PORT_PHY_QCFG_RESP_LINK_LINK;
1051 phy_qcfg_resp.link_speed = cpu_to_le16(
1052 PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
1053 phy_qcfg_resp.duplex_cfg =
1054 PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
1055 phy_qcfg_resp.duplex_state =
1056 PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
1057 phy_qcfg_resp.pause =
1058 (PORT_PHY_QCFG_RESP_PAUSE_TX |
1059 PORT_PHY_QCFG_RESP_PAUSE_RX);
1060 }
1061 } else {
1062 /* force link down */
1063 phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
1064 phy_qcfg_resp.link_speed = 0;
1065 phy_qcfg_resp.duplex_state =
1066 PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
1067 phy_qcfg_resp.pause = 0;
1068 }
1069 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
1070 phy_qcfg_req->resp_addr,
1071 phy_qcfg_req->cmpl_ring,
1072 sizeof(phy_qcfg_resp));
1073 }
1074 return rc;
1075 }
1076
bnxt_vf_req_validate_snd(struct bnxt * bp,struct bnxt_vf_info * vf)1077 static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
1078 {
1079 int rc = 0;
1080 struct input *encap_req = vf->hwrm_cmd_req_addr;
1081 u32 req_type = le16_to_cpu(encap_req->req_type);
1082
1083 switch (req_type) {
1084 case HWRM_FUNC_VF_CFG:
1085 rc = bnxt_vf_configure_mac(bp, vf);
1086 break;
1087 case HWRM_CFA_L2_FILTER_ALLOC:
1088 rc = bnxt_vf_validate_set_mac(bp, vf);
1089 break;
1090 case HWRM_FUNC_CFG:
1091 /* TODO Validate if VF is allowed to change mac address,
1092 * mtu, num of rings etc
1093 */
1094 rc = bnxt_hwrm_exec_fwd_resp(
1095 bp, vf, sizeof(struct hwrm_func_cfg_input));
1096 break;
1097 case HWRM_PORT_PHY_QCFG:
1098 rc = bnxt_vf_set_link(bp, vf);
1099 break;
1100 default:
1101 break;
1102 }
1103 return rc;
1104 }
1105
bnxt_hwrm_exec_fwd_req(struct bnxt * bp)1106 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1107 {
1108 u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
1109
1110 /* Scan through VF's and process commands */
1111 while (1) {
1112 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
1113 if (vf_id >= active_vfs)
1114 break;
1115
1116 clear_bit(vf_id, bp->pf.vf_event_bmap);
1117 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
1118 i = vf_id + 1;
1119 }
1120 }
1121
bnxt_update_vf_mac(struct bnxt * bp)1122 void bnxt_update_vf_mac(struct bnxt *bp)
1123 {
1124 struct hwrm_func_qcaps_input req = {0};
1125 struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
1126
1127 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
1128 req.fid = cpu_to_le16(0xffff);
1129
1130 mutex_lock(&bp->hwrm_cmd_lock);
1131 if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
1132 goto update_vf_mac_exit;
1133
1134 /* Store MAC address from the firmware. There are 2 cases:
1135 * 1. MAC address is valid. It is assigned from the PF and we
1136 * need to override the current VF MAC address with it.
1137 * 2. MAC address is zero. The VF will use a random MAC address by
1138 * default but the stored zero MAC will allow the VF user to change
1139 * the random MAC address using ndo_set_mac_address() if he wants.
1140 */
1141 if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr))
1142 memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
1143
1144 /* overwrite netdev dev_addr with admin VF MAC */
1145 if (is_valid_ether_addr(bp->vf.mac_addr))
1146 memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
1147 update_vf_mac_exit:
1148 mutex_unlock(&bp->hwrm_cmd_lock);
1149 }
1150
bnxt_approve_mac(struct bnxt * bp,u8 * mac,bool strict)1151 int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
1152 {
1153 struct hwrm_func_vf_cfg_input req = {0};
1154 int rc = 0;
1155
1156 if (!BNXT_VF(bp))
1157 return 0;
1158
1159 if (bp->hwrm_spec_code < 0x10202) {
1160 if (is_valid_ether_addr(bp->vf.mac_addr))
1161 rc = -EADDRNOTAVAIL;
1162 goto mac_done;
1163 }
1164 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_CFG, -1, -1);
1165 req.enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
1166 memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
1167 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
1168 mac_done:
1169 if (rc && strict) {
1170 rc = -EADDRNOTAVAIL;
1171 netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
1172 mac);
1173 return rc;
1174 }
1175 return 0;
1176 }
1177 #else
1178
bnxt_cfg_hw_sriov(struct bnxt * bp,int * num_vfs,bool reset)1179 int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
1180 {
1181 if (*num_vfs)
1182 return -EOPNOTSUPP;
1183 return 0;
1184 }
1185
bnxt_sriov_disable(struct bnxt * bp)1186 void bnxt_sriov_disable(struct bnxt *bp)
1187 {
1188 }
1189
bnxt_hwrm_exec_fwd_req(struct bnxt * bp)1190 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1191 {
1192 netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
1193 }
1194
bnxt_update_vf_mac(struct bnxt * bp)1195 void bnxt_update_vf_mac(struct bnxt *bp)
1196 {
1197 }
1198
bnxt_approve_mac(struct bnxt * bp,u8 * mac,bool strict)1199 int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
1200 {
1201 return 0;
1202 }
1203 #endif
1204
