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WIP FPC-III support
[linux/fpc-iii.git] / drivers / net / ethernet / broadcom / bnxt / bnxt_sriov.c
bloba217316228f46b7ab6386432c6464cde0ac9ebb6
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_ulp.h"
21 #include "bnxt_sriov.h"
22 #include "bnxt_vfr.h"
23 #include "bnxt_ethtool.h"
24
25 #ifdef CONFIG_BNXT_SRIOV
26 static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
27 struct bnxt_vf_info *vf, u16 event_id)
28 {
29 struct hwrm_fwd_async_event_cmpl_input req = {0};
30 struct hwrm_async_event_cmpl *async_cmpl;
31 int rc = 0;
32
33 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_ASYNC_EVENT_CMPL, -1, -1);
34 if (vf)
35 req.encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
36 else
37 /* broadcast this async event to all VFs */
38 req.encap_async_event_target_id = cpu_to_le16(0xffff);
39 async_cmpl = (struct hwrm_async_event_cmpl *)req.encap_async_event_cmpl;
40 async_cmpl->type = cpu_to_le16(ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
41 async_cmpl->event_id = cpu_to_le16(event_id);
42
43 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
44 if (rc)
45 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
46 rc);
47 return rc;
48 }
49
50 static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
51 {
52 if (!test_bit(BNXT_STATE_OPEN, &bp->state)) {
53 netdev_err(bp->dev, "vf ndo called though PF is down\n");
54 return -EINVAL;
55 }
56 if (!bp->pf.active_vfs) {
57 netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
58 return -EINVAL;
59 }
60 if (vf_id >= bp->pf.active_vfs) {
61 netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
62 return -EINVAL;
63 }
64 return 0;
65 }
66
67 int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
68 {
69 struct hwrm_func_cfg_input req = {0};
70 struct bnxt *bp = netdev_priv(dev);
71 struct bnxt_vf_info *vf;
72 bool old_setting = false;
73 u32 func_flags;
74 int rc;
75
76 if (bp->hwrm_spec_code < 0x10701)
77 return -ENOTSUPP;
78
79 rc = bnxt_vf_ndo_prep(bp, vf_id);
80 if (rc)
81 return rc;
82
83 vf = &bp->pf.vf[vf_id];
84 if (vf->flags & BNXT_VF_SPOOFCHK)
85 old_setting = true;
86 if (old_setting == setting)
87 return 0;
88
89 if (setting)
90 func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_ENABLE;
91 else
92 func_flags = FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK_DISABLE;
93 /*TODO: if the driver supports VLAN filter on guest VLAN,
94 * the spoof check should also include vlan anti-spoofing
95 */
96 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
97 req.fid = cpu_to_le16(vf->fw_fid);
98 req.flags = cpu_to_le32(func_flags);
99 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
100 if (!rc) {
101 if (setting)
102 vf->flags |= BNXT_VF_SPOOFCHK;
103 else
104 vf->flags &= ~BNXT_VF_SPOOFCHK;
105 }
106 return rc;
107 }
108
109 static int bnxt_hwrm_func_qcfg_flags(struct bnxt *bp, struct bnxt_vf_info *vf)
110 {
111 struct hwrm_func_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
112 struct hwrm_func_qcfg_input req = {0};
113 int rc;
114
115 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCFG, -1, -1);
116 req.fid = cpu_to_le16(vf->fw_fid);
117 mutex_lock(&bp->hwrm_cmd_lock);
118 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
119 if (rc) {
120 mutex_unlock(&bp->hwrm_cmd_lock);
121 return rc;
122 }
123 vf->func_qcfg_flags = le16_to_cpu(resp->flags);
124 mutex_unlock(&bp->hwrm_cmd_lock);
125 return 0;
126 }
127
128 static bool bnxt_is_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
129 {
130 if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
131 return !!(vf->flags & BNXT_VF_TRUST);
132
133 bnxt_hwrm_func_qcfg_flags(bp, vf);
134 return !!(vf->func_qcfg_flags & FUNC_QCFG_RESP_FLAGS_TRUSTED_VF);
135 }
136
137 static int bnxt_hwrm_set_trusted_vf(struct bnxt *bp, struct bnxt_vf_info *vf)
138 {
139 struct hwrm_func_cfg_input req = {0};
140
141 if (!(bp->fw_cap & BNXT_FW_CAP_TRUSTED_VF))
142 return 0;
143
144 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
145 req.fid = cpu_to_le16(vf->fw_fid);
146 if (vf->flags & BNXT_VF_TRUST)
147 req.flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
148 else
149 req.flags = cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_DISABLE);
150 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
151 }
152
153 int bnxt_set_vf_trust(struct net_device *dev, int vf_id, bool trusted)
154 {
155 struct bnxt *bp = netdev_priv(dev);
156 struct bnxt_vf_info *vf;
157
158 if (bnxt_vf_ndo_prep(bp, vf_id))
159 return -EINVAL;
160
161 vf = &bp->pf.vf[vf_id];
162 if (trusted)
163 vf->flags |= BNXT_VF_TRUST;
164 else
165 vf->flags &= ~BNXT_VF_TRUST;
166
167 bnxt_hwrm_set_trusted_vf(bp, vf);
168 return 0;
169 }
170
171 int bnxt_get_vf_config(struct net_device *dev, int vf_id,
172 struct ifla_vf_info *ivi)
173 {
174 struct bnxt *bp = netdev_priv(dev);
175 struct bnxt_vf_info *vf;
176 int rc;
177
178 rc = bnxt_vf_ndo_prep(bp, vf_id);
179 if (rc)
180 return rc;
181
182 ivi->vf = vf_id;
183 vf = &bp->pf.vf[vf_id];
184
185 if (is_valid_ether_addr(vf->mac_addr))
186 memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
187 else
188 memcpy(&ivi->mac, vf->vf_mac_addr, ETH_ALEN);
189 ivi->max_tx_rate = vf->max_tx_rate;
190 ivi->min_tx_rate = vf->min_tx_rate;
191 ivi->vlan = vf->vlan;
192 if (vf->flags & BNXT_VF_QOS)
193 ivi->qos = vf->vlan >> VLAN_PRIO_SHIFT;
194 else
195 ivi->qos = 0;
196 ivi->spoofchk = !!(vf->flags & BNXT_VF_SPOOFCHK);
197 ivi->trusted = bnxt_is_trusted_vf(bp, vf);
198 if (!(vf->flags & BNXT_VF_LINK_FORCED))
199 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
200 else if (vf->flags & BNXT_VF_LINK_UP)
201 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
202 else
203 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
204
205 return 0;
206 }
207
208 int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
209 {
210 struct hwrm_func_cfg_input req = {0};
211 struct bnxt *bp = netdev_priv(dev);
212 struct bnxt_vf_info *vf;
213 int rc;
214
215 rc = bnxt_vf_ndo_prep(bp, vf_id);
216 if (rc)
217 return rc;
218 /* reject bc or mc mac addr, zero mac addr means allow
219 * VF to use its own mac addr
220 */
221 if (is_multicast_ether_addr(mac)) {
222 netdev_err(dev, "Invalid VF ethernet address\n");
223 return -EINVAL;
224 }
225 vf = &bp->pf.vf[vf_id];
226
227 memcpy(vf->mac_addr, mac, ETH_ALEN);
228 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
229 req.fid = cpu_to_le16(vf->fw_fid);
230 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
231 memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
232 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
233 }
234
235 int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
236 __be16 vlan_proto)
237 {
238 struct hwrm_func_cfg_input req = {0};
239 struct bnxt *bp = netdev_priv(dev);
240 struct bnxt_vf_info *vf;
241 u16 vlan_tag;
242 int rc;
243
244 if (bp->hwrm_spec_code < 0x10201)
245 return -ENOTSUPP;
246
247 if (vlan_proto != htons(ETH_P_8021Q))
248 return -EPROTONOSUPPORT;
249
250 rc = bnxt_vf_ndo_prep(bp, vf_id);
251 if (rc)
252 return rc;
253
254 /* TODO: needed to implement proper handling of user priority,
255 * currently fail the command if there is valid priority
256 */
257 if (vlan_id > 4095 || qos)
258 return -EINVAL;
259
260 vf = &bp->pf.vf[vf_id];
261 vlan_tag = vlan_id;
262 if (vlan_tag == vf->vlan)
263 return 0;
264
265 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
266 req.fid = cpu_to_le16(vf->fw_fid);
267 req.dflt_vlan = cpu_to_le16(vlan_tag);
268 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
269 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
270 if (!rc)
271 vf->vlan = vlan_tag;
272 return rc;
273 }
274
275 int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
276 int max_tx_rate)
277 {
278 struct hwrm_func_cfg_input req = {0};
279 struct bnxt *bp = netdev_priv(dev);
280 struct bnxt_vf_info *vf;
281 u32 pf_link_speed;
282 int rc;
283
284 rc = bnxt_vf_ndo_prep(bp, vf_id);
285 if (rc)
286 return rc;
287
288 vf = &bp->pf.vf[vf_id];
289 pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
290 if (max_tx_rate > pf_link_speed) {
291 netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
292 max_tx_rate, vf_id);
293 return -EINVAL;
294 }
295
296 if (min_tx_rate > pf_link_speed || min_tx_rate > max_tx_rate) {
297 netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
298 min_tx_rate, vf_id);
299 return -EINVAL;
300 }
301 if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
302 return 0;
303 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
304 req.fid = cpu_to_le16(vf->fw_fid);
305 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
306 req.max_bw = cpu_to_le32(max_tx_rate);
307 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
308 req.min_bw = cpu_to_le32(min_tx_rate);
309 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
310 if (!rc) {
311 vf->min_tx_rate = min_tx_rate;
312 vf->max_tx_rate = max_tx_rate;
313 }
314 return rc;
315 }
316
317 int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
318 {
319 struct bnxt *bp = netdev_priv(dev);
320 struct bnxt_vf_info *vf;
321 int rc;
322
323 rc = bnxt_vf_ndo_prep(bp, vf_id);
324 if (rc)
325 return rc;
326
327 vf = &bp->pf.vf[vf_id];
328
329 vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
330 switch (link) {
331 case IFLA_VF_LINK_STATE_AUTO:
332 vf->flags |= BNXT_VF_LINK_UP;
333 break;
334 case IFLA_VF_LINK_STATE_DISABLE:
335 vf->flags |= BNXT_VF_LINK_FORCED;
336 break;
337 case IFLA_VF_LINK_STATE_ENABLE:
338 vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
339 break;
340 default:
341 netdev_err(bp->dev, "Invalid link option\n");
342 rc = -EINVAL;
343 break;
344 }
345 if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED))
346 rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf,
347 ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE);
348 return rc;
349 }
350
351 static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
352 {
353 int i;
354 struct bnxt_vf_info *vf;
355
356 for (i = 0; i < num_vfs; i++) {
357 vf = &bp->pf.vf[i];
358 memset(vf, 0, sizeof(*vf));
359 }
360 return 0;
361 }
362
363 static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
364 {
365 int i, rc = 0;
366 struct bnxt_pf_info *pf = &bp->pf;
367 struct hwrm_func_vf_resc_free_input req = {0};
368
369 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESC_FREE, -1, -1);
370
371 mutex_lock(&bp->hwrm_cmd_lock);
372 for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
373 req.vf_id = cpu_to_le16(i);
374 rc = _hwrm_send_message(bp, &req, sizeof(req),
375 HWRM_CMD_TIMEOUT);
376 if (rc)
377 break;
378 }
379 mutex_unlock(&bp->hwrm_cmd_lock);
380 return rc;
381 }
382
383 static void bnxt_free_vf_resources(struct bnxt *bp)
384 {
385 struct pci_dev *pdev = bp->pdev;
386 int i;
387
388 kfree(bp->pf.vf_event_bmap);
389 bp->pf.vf_event_bmap = NULL;
390
391 for (i = 0; i < 4; i++) {
392 if (bp->pf.hwrm_cmd_req_addr[i]) {
393 dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
394 bp->pf.hwrm_cmd_req_addr[i],
395 bp->pf.hwrm_cmd_req_dma_addr[i]);
396 bp->pf.hwrm_cmd_req_addr[i] = NULL;
397 }
398 }
399
400 bp->pf.active_vfs = 0;
401 kfree(bp->pf.vf);
402 bp->pf.vf = NULL;
403 }
404
405 static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
406 {
407 struct pci_dev *pdev = bp->pdev;
408 u32 nr_pages, size, i, j, k = 0;
409
410 bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
411 if (!bp->pf.vf)
412 return -ENOMEM;
413
414 bnxt_set_vf_attr(bp, num_vfs);
415
416 size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
417 nr_pages = size / BNXT_PAGE_SIZE;
418 if (size & (BNXT_PAGE_SIZE - 1))
419 nr_pages++;
420
421 for (i = 0; i < nr_pages; i++) {
422 bp->pf.hwrm_cmd_req_addr[i] =
423 dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
424 &bp->pf.hwrm_cmd_req_dma_addr[i],
425 GFP_KERNEL);
426
427 if (!bp->pf.hwrm_cmd_req_addr[i])
428 return -ENOMEM;
429
430 for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
431 struct bnxt_vf_info *vf = &bp->pf.vf[k];
432
433 vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
434 j * BNXT_HWRM_REQ_MAX_SIZE;
435 vf->hwrm_cmd_req_dma_addr =
436 bp->pf.hwrm_cmd_req_dma_addr[i] + j *
437 BNXT_HWRM_REQ_MAX_SIZE;
438 k++;
439 }
440 }
441
442 /* Max 128 VF's */
443 bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
444 if (!bp->pf.vf_event_bmap)
445 return -ENOMEM;
446
447 bp->pf.hwrm_cmd_req_pages = nr_pages;
448 return 0;
449 }
450
451 static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
452 {
453 struct hwrm_func_buf_rgtr_input req = {0};
454
455 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BUF_RGTR, -1, -1);
456
457 req.req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
458 req.req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
459 req.req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
460 req.req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
461 req.req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
462 req.req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
463 req.req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
464
465 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
466 }
467
468 /* Caller holds bp->hwrm_cmd_lock mutex lock */
469 static void __bnxt_set_vf_params(struct bnxt *bp, int vf_id)
470 {
471 struct hwrm_func_cfg_input req = {0};
472 struct bnxt_vf_info *vf;
473
474 vf = &bp->pf.vf[vf_id];
475 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
476 req.fid = cpu_to_le16(vf->fw_fid);
477
478 if (is_valid_ether_addr(vf->mac_addr)) {
479 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
480 memcpy(req.dflt_mac_addr, vf->mac_addr, ETH_ALEN);
481 }
482 if (vf->vlan) {
483 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
484 req.dflt_vlan = cpu_to_le16(vf->vlan);
485 }
486 if (vf->max_tx_rate) {
487 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
488 req.max_bw = cpu_to_le32(vf->max_tx_rate);
489 #ifdef HAVE_IFLA_TX_RATE
490 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
491 req.min_bw = cpu_to_le32(vf->min_tx_rate);
492 #endif
493 }
494 if (vf->flags & BNXT_VF_TRUST)
495 req.flags |= cpu_to_le32(FUNC_CFG_REQ_FLAGS_TRUSTED_VF_ENABLE);
496
497 _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
498 }
499
500 /* Only called by PF to reserve resources for VFs, returns actual number of
501 * VFs configured, or < 0 on error.
502 */
503 static int bnxt_hwrm_func_vf_resc_cfg(struct bnxt *bp, int num_vfs, bool reset)
504 {
505 struct hwrm_func_vf_resource_cfg_input req = {0};
506 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
507 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings;
508 u16 vf_stat_ctx, vf_vnics, vf_ring_grps;
509 struct bnxt_pf_info *pf = &bp->pf;
510 int i, rc = 0, min = 1;
511 u16 vf_msix = 0;
512 u16 vf_rss;
513
514 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESOURCE_CFG, -1, -1);
515
516 if (bp->flags & BNXT_FLAG_CHIP_P5) {
517 vf_msix = hw_resc->max_nqs - bnxt_nq_rings_in_use(bp);
518 vf_ring_grps = 0;
519 } else {
520 vf_ring_grps = hw_resc->max_hw_ring_grps - bp->rx_nr_rings;
521 }
522 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp);
523 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp);
524 if (bp->flags & BNXT_FLAG_AGG_RINGS)
525 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings * 2;
526 else
527 vf_rx_rings = hw_resc->max_rx_rings - bp->rx_nr_rings;
528 vf_tx_rings = hw_resc->max_tx_rings - bp->tx_nr_rings;
529 vf_vnics = hw_resc->max_vnics - bp->nr_vnics;
530 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
531 vf_rss = hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs;
532
533 req.min_rsscos_ctx = cpu_to_le16(BNXT_VF_MIN_RSS_CTX);
534 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
535 min = 0;
536 req.min_rsscos_ctx = cpu_to_le16(min);
537 }
538 if (pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL ||
539 pf->vf_resv_strategy == BNXT_VF_RESV_STRATEGY_MINIMAL_STATIC) {
540 req.min_cmpl_rings = cpu_to_le16(min);
541 req.min_tx_rings = cpu_to_le16(min);
542 req.min_rx_rings = cpu_to_le16(min);
543 req.min_l2_ctxs = cpu_to_le16(min);
544 req.min_vnics = cpu_to_le16(min);
545 req.min_stat_ctx = cpu_to_le16(min);
546 if (!(bp->flags & BNXT_FLAG_CHIP_P5))
547 req.min_hw_ring_grps = cpu_to_le16(min);
548 } else {
549 vf_cp_rings /= num_vfs;
550 vf_tx_rings /= num_vfs;
551 vf_rx_rings /= num_vfs;
552 vf_vnics /= num_vfs;
553 vf_stat_ctx /= num_vfs;
554 vf_ring_grps /= num_vfs;
555 vf_rss /= num_vfs;
556
557 req.min_cmpl_rings = cpu_to_le16(vf_cp_rings);
558 req.min_tx_rings = cpu_to_le16(vf_tx_rings);
559 req.min_rx_rings = cpu_to_le16(vf_rx_rings);
560 req.min_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
561 req.min_vnics = cpu_to_le16(vf_vnics);
562 req.min_stat_ctx = cpu_to_le16(vf_stat_ctx);
563 req.min_hw_ring_grps = cpu_to_le16(vf_ring_grps);
564 req.min_rsscos_ctx = cpu_to_le16(vf_rss);
565 }
566 req.max_cmpl_rings = cpu_to_le16(vf_cp_rings);
567 req.max_tx_rings = cpu_to_le16(vf_tx_rings);
568 req.max_rx_rings = cpu_to_le16(vf_rx_rings);
569 req.max_l2_ctxs = cpu_to_le16(BNXT_VF_MAX_L2_CTX);
570 req.max_vnics = cpu_to_le16(vf_vnics);
571 req.max_stat_ctx = cpu_to_le16(vf_stat_ctx);
572 req.max_hw_ring_grps = cpu_to_le16(vf_ring_grps);
573 req.max_rsscos_ctx = cpu_to_le16(vf_rss);
574 if (bp->flags & BNXT_FLAG_CHIP_P5)
575 req.max_msix = cpu_to_le16(vf_msix / num_vfs);
576
577 mutex_lock(&bp->hwrm_cmd_lock);
578 for (i = 0; i < num_vfs; i++) {
579 if (reset)
580 __bnxt_set_vf_params(bp, i);
581
582 req.vf_id = cpu_to_le16(pf->first_vf_id + i);
583 rc = _hwrm_send_message(bp, &req, sizeof(req),
584 HWRM_CMD_TIMEOUT);
585 if (rc)
586 break;
587 pf->active_vfs = i + 1;
588 pf->vf[i].fw_fid = pf->first_vf_id + i;
589 }
590 mutex_unlock(&bp->hwrm_cmd_lock);
591 if (pf->active_vfs) {
592 u16 n = pf->active_vfs;
593
594 hw_resc->max_tx_rings -= le16_to_cpu(req.min_tx_rings) * n;
595 hw_resc->max_rx_rings -= le16_to_cpu(req.min_rx_rings) * n;
596 hw_resc->max_hw_ring_grps -= le16_to_cpu(req.min_hw_ring_grps) *
597 n;
598 hw_resc->max_cp_rings -= le16_to_cpu(req.min_cmpl_rings) * n;
599 hw_resc->max_rsscos_ctxs -= le16_to_cpu(req.min_rsscos_ctx) * n;
600 hw_resc->max_stat_ctxs -= le16_to_cpu(req.min_stat_ctx) * n;
601 hw_resc->max_vnics -= le16_to_cpu(req.min_vnics) * n;
602 if (bp->flags & BNXT_FLAG_CHIP_P5)
603 hw_resc->max_irqs -= vf_msix * n;
604
605 rc = pf->active_vfs;
606 }
607 return rc;
608 }
609
610 /* Only called by PF to reserve resources for VFs, returns actual number of
611 * VFs configured, or < 0 on error.
612 */
613 static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
614 {
615 u32 rc = 0, mtu, i;
616 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
617 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
618 struct hwrm_func_cfg_input req = {0};
619 struct bnxt_pf_info *pf = &bp->pf;
620 int total_vf_tx_rings = 0;
621 u16 vf_ring_grps;
622
623 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
624
625 /* Remaining rings are distributed equally amongs VF's for now */
626 vf_cp_rings = bnxt_get_avail_cp_rings_for_en(bp) / num_vfs;
627 vf_stat_ctx = bnxt_get_avail_stat_ctxs_for_en(bp) / num_vfs;
628 if (bp->flags & BNXT_FLAG_AGG_RINGS)
629 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings * 2) /
630 num_vfs;
631 else
632 vf_rx_rings = (hw_resc->max_rx_rings - bp->rx_nr_rings) /
633 num_vfs;
634 vf_ring_grps = (hw_resc->max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
635 vf_tx_rings = (hw_resc->max_tx_rings - bp->tx_nr_rings) / num_vfs;
636 vf_vnics = (hw_resc->max_vnics - bp->nr_vnics) / num_vfs;
637 vf_vnics = min_t(u16, vf_vnics, vf_rx_rings);
638
639 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
640 FUNC_CFG_REQ_ENABLES_MRU |
641 FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
642 FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
643 FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
644 FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
645 FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
646 FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
647 FUNC_CFG_REQ_ENABLES_NUM_VNICS |
648 FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
649
650 mtu = bp->dev->mtu + ETH_HLEN + VLAN_HLEN;
651 req.mru = cpu_to_le16(mtu);
652 req.mtu = cpu_to_le16(mtu);
653
654 req.num_rsscos_ctxs = cpu_to_le16(1);
655 req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
656 req.num_tx_rings = cpu_to_le16(vf_tx_rings);
657 req.num_rx_rings = cpu_to_le16(vf_rx_rings);
658 req.num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
659 req.num_l2_ctxs = cpu_to_le16(4);
660
661 req.num_vnics = cpu_to_le16(vf_vnics);
662 /* FIXME spec currently uses 1 bit for stats ctx */
663 req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
664
665 mutex_lock(&bp->hwrm_cmd_lock);
666 for (i = 0; i < num_vfs; i++) {
667 int vf_tx_rsvd = vf_tx_rings;
668
669 req.fid = cpu_to_le16(pf->first_vf_id + i);
670 rc = _hwrm_send_message(bp, &req, sizeof(req),
671 HWRM_CMD_TIMEOUT);
672 if (rc)
673 break;
674 pf->active_vfs = i + 1;
675 pf->vf[i].fw_fid = le16_to_cpu(req.fid);
676 rc = __bnxt_hwrm_get_tx_rings(bp, pf->vf[i].fw_fid,
677 &vf_tx_rsvd);
678 if (rc)
679 break;
680 total_vf_tx_rings += vf_tx_rsvd;
681 }
682 mutex_unlock(&bp->hwrm_cmd_lock);
683 if (pf->active_vfs) {
684 hw_resc->max_tx_rings -= total_vf_tx_rings;
685 hw_resc->max_rx_rings -= vf_rx_rings * num_vfs;
686 hw_resc->max_hw_ring_grps -= vf_ring_grps * num_vfs;
687 hw_resc->max_cp_rings -= vf_cp_rings * num_vfs;
688 hw_resc->max_rsscos_ctxs -= num_vfs;
689 hw_resc->max_stat_ctxs -= vf_stat_ctx * num_vfs;
690 hw_resc->max_vnics -= vf_vnics * num_vfs;
691 rc = pf->active_vfs;
692 }
693 return rc;
694 }
695
696 static int bnxt_func_cfg(struct bnxt *bp, int num_vfs, bool reset)
697 {
698 if (BNXT_NEW_RM(bp))
699 return bnxt_hwrm_func_vf_resc_cfg(bp, num_vfs, reset);
700 else
701 return bnxt_hwrm_func_cfg(bp, num_vfs);
702 }
703
704 int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
705 {
706 int rc;
707
708 /* Register buffers for VFs */
709 rc = bnxt_hwrm_func_buf_rgtr(bp);
710 if (rc)
711 return rc;
712
713 /* Reserve resources for VFs */
714 rc = bnxt_func_cfg(bp, *num_vfs, reset);
715 if (rc != *num_vfs) {
716 if (rc <= 0) {
717 netdev_warn(bp->dev, "Unable to reserve resources for SRIOV.\n");
718 *num_vfs = 0;
719 return rc;
720 }
721 netdev_warn(bp->dev, "Only able to reserve resources for %d VFs.\n",
722 rc);
723 *num_vfs = rc;
724 }
725
726 bnxt_ulp_sriov_cfg(bp, *num_vfs);
727 return 0;
728 }
729
730 static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
731 {
732 int rc = 0, vfs_supported;
733 int min_rx_rings, min_tx_rings, min_rss_ctxs;
734 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
735 int tx_ok = 0, rx_ok = 0, rss_ok = 0;
736 int avail_cp, avail_stat;
737
738 /* Check if we can enable requested num of vf's. At a mininum
739 * we require 1 RX 1 TX rings for each VF. In this minimum conf
740 * features like TPA will not be available.
741 */
742 vfs_supported = *num_vfs;
743
744 avail_cp = bnxt_get_avail_cp_rings_for_en(bp);
745 avail_stat = bnxt_get_avail_stat_ctxs_for_en(bp);
746 avail_cp = min_t(int, avail_cp, avail_stat);
747
748 while (vfs_supported) {
749 min_rx_rings = vfs_supported;
750 min_tx_rings = vfs_supported;
751 min_rss_ctxs = vfs_supported;
752
753 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
754 if (hw_resc->max_rx_rings - bp->rx_nr_rings * 2 >=
755 min_rx_rings)
756 rx_ok = 1;
757 } else {
758 if (hw_resc->max_rx_rings - bp->rx_nr_rings >=
759 min_rx_rings)
760 rx_ok = 1;
761 }
762 if (hw_resc->max_vnics - bp->nr_vnics < min_rx_rings ||
763 avail_cp < min_rx_rings)
764 rx_ok = 0;
765
766 if (hw_resc->max_tx_rings - bp->tx_nr_rings >= min_tx_rings &&
767 avail_cp >= min_tx_rings)
768 tx_ok = 1;
769
770 if (hw_resc->max_rsscos_ctxs - bp->rsscos_nr_ctxs >=
771 min_rss_ctxs)
772 rss_ok = 1;
773
774 if (tx_ok && rx_ok && rss_ok)
775 break;
776
777 vfs_supported--;
778 }
779
780 if (!vfs_supported) {
781 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
782 return -EINVAL;
783 }
784
785 if (vfs_supported != *num_vfs) {
786 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
787 *num_vfs, vfs_supported);
788 *num_vfs = vfs_supported;
789 }
790
791 rc = bnxt_alloc_vf_resources(bp, *num_vfs);
792 if (rc)
793 goto err_out1;
794
795 rc = bnxt_cfg_hw_sriov(bp, num_vfs, false);
796 if (rc)
797 goto err_out2;
798
799 rc = pci_enable_sriov(bp->pdev, *num_vfs);
800 if (rc)
801 goto err_out2;
802
803 return 0;
804
805 err_out2:
806 /* Free the resources reserved for various VF's */
807 bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
808
809 err_out1:
810 bnxt_free_vf_resources(bp);
811
812 return rc;
813 }
814
815 void bnxt_sriov_disable(struct bnxt *bp)
816 {
817 u16 num_vfs = pci_num_vf(bp->pdev);
818
819 if (!num_vfs)
820 return;
821
822 /* synchronize VF and VF-rep create and destroy */
823 mutex_lock(&bp->sriov_lock);
824 bnxt_vf_reps_destroy(bp);
825
826 if (pci_vfs_assigned(bp->pdev)) {
827 bnxt_hwrm_fwd_async_event_cmpl(
828 bp, NULL, ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
829 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
830 num_vfs);
831 } else {
832 pci_disable_sriov(bp->pdev);
833 /* Free the HW resources reserved for various VF's */
834 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
835 }
836 mutex_unlock(&bp->sriov_lock);
837
838 bnxt_free_vf_resources(bp);
839
840 /* Reclaim all resources for the PF. */
841 rtnl_lock();
842 bnxt_restore_pf_fw_resources(bp);
843 rtnl_unlock();
844
845 bnxt_ulp_sriov_cfg(bp, 0);
846 }
847
848 int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
849 {
850 struct net_device *dev = pci_get_drvdata(pdev);
851 struct bnxt *bp = netdev_priv(dev);
852
853 if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
854 netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
855 return 0;
856 }
857
858 rtnl_lock();
859 if (!netif_running(dev)) {
860 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
861 rtnl_unlock();
862 return 0;
863 }
864 if (test_bit(BNXT_STATE_IN_FW_RESET, &bp->state)) {
865 netdev_warn(dev, "Reject SRIOV config request when FW reset is in progress\n");
866 rtnl_unlock();
867 return 0;
868 }
869 bp->sriov_cfg = true;
870 rtnl_unlock();
871
872 if (pci_vfs_assigned(bp->pdev)) {
873 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
874 num_vfs = 0;
875 goto sriov_cfg_exit;
876 }
877
878 /* Check if enabled VFs is same as requested */
879 if (num_vfs && num_vfs == bp->pf.active_vfs)
880 goto sriov_cfg_exit;
881
882 /* if there are previous existing VFs, clean them up */
883 bnxt_sriov_disable(bp);
884 if (!num_vfs)
885 goto sriov_cfg_exit;
886
887 bnxt_sriov_enable(bp, &num_vfs);
888
889 sriov_cfg_exit:
890 bp->sriov_cfg = false;
891 wake_up(&bp->sriov_cfg_wait);
892
893 return num_vfs;
894 }
895
896 static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
897 void *encap_resp, __le64 encap_resp_addr,
898 __le16 encap_resp_cpr, u32 msg_size)
899 {
900 int rc = 0;
901 struct hwrm_fwd_resp_input req = {0};
902
903 if (BNXT_FWD_RESP_SIZE_ERR(msg_size))
904 return -EINVAL;
905
906 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
907
908 /* Set the new target id */
909 req.target_id = cpu_to_le16(vf->fw_fid);
910 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
911 req.encap_resp_len = cpu_to_le16(msg_size);
912 req.encap_resp_addr = encap_resp_addr;
913 req.encap_resp_cmpl_ring = encap_resp_cpr;
914 memcpy(req.encap_resp, encap_resp, msg_size);
915
916 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
917 if (rc)
918 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
919 return rc;
920 }
921
922 static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
923 u32 msg_size)
924 {
925 int rc = 0;
926 struct hwrm_reject_fwd_resp_input req = {0};
927
928 if (BNXT_REJ_FWD_RESP_SIZE_ERR(msg_size))
929 return -EINVAL;
930
931 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
932 /* Set the new target id */
933 req.target_id = cpu_to_le16(vf->fw_fid);
934 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
935 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
936
937 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
938 if (rc)
939 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
940 return rc;
941 }
942
943 static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
944 u32 msg_size)
945 {
946 int rc = 0;
947 struct hwrm_exec_fwd_resp_input req = {0};
948
949 if (BNXT_EXEC_FWD_RESP_SIZE_ERR(msg_size))
950 return -EINVAL;
951
952 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
953 /* Set the new target id */
954 req.target_id = cpu_to_le16(vf->fw_fid);
955 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
956 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
957
958 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
959 if (rc)
960 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
961 return rc;
962 }
963
964 static int bnxt_vf_configure_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
965 {
966 u32 msg_size = sizeof(struct hwrm_func_vf_cfg_input);
967 struct hwrm_func_vf_cfg_input *req =
968 (struct hwrm_func_vf_cfg_input *)vf->hwrm_cmd_req_addr;
969
970 /* Allow VF to set a valid MAC address, if trust is set to on or
971 * if the PF assigned MAC address is zero
972 */
973 if (req->enables & cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR)) {
974 bool trust = bnxt_is_trusted_vf(bp, vf);
975
976 if (is_valid_ether_addr(req->dflt_mac_addr) &&
977 (trust || !is_valid_ether_addr(vf->mac_addr) ||
978 ether_addr_equal(req->dflt_mac_addr, vf->mac_addr))) {
979 ether_addr_copy(vf->vf_mac_addr, req->dflt_mac_addr);
980 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
981 }
982 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
983 }
984 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
985 }
986
987 static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
988 {
989 u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
990 struct hwrm_cfa_l2_filter_alloc_input *req =
991 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
992 bool mac_ok = false;
993
994 if (!is_valid_ether_addr((const u8 *)req->l2_addr))
995 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
996
997 /* Allow VF to set a valid MAC address, if trust is set to on.
998 * Or VF MAC address must first match MAC address in PF's context.
999 * Otherwise, it must match the VF MAC address if firmware spec >=
1000 * 1.2.2
1001 */
1002 if (bnxt_is_trusted_vf(bp, vf)) {
1003 mac_ok = true;
1004 } else if (is_valid_ether_addr(vf->mac_addr)) {
1005 if (ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
1006 mac_ok = true;
1007 } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
1008 if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
1009 mac_ok = true;
1010 } else {
1011 /* There are two cases:
1012 * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
1013 * to the PF and so it doesn't have to match
1014 * 2.Allow VF to modify it's own MAC when PF has not assigned a
1015 * valid MAC address and firmware spec >= 0x10202
1016 */
1017 mac_ok = true;
1018 }
1019 if (mac_ok)
1020 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
1021 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
1022 }
1023
1024 static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
1025 {
1026 int rc = 0;
1027
1028 if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
1029 /* real link */
1030 rc = bnxt_hwrm_exec_fwd_resp(
1031 bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
1032 } else {
1033 struct hwrm_port_phy_qcfg_output phy_qcfg_resp = {0};
1034 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
1035
1036 phy_qcfg_req =
1037 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
1038 mutex_lock(&bp->hwrm_cmd_lock);
1039 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
1040 sizeof(phy_qcfg_resp));
1041 mutex_unlock(&bp->hwrm_cmd_lock);
1042 phy_qcfg_resp.resp_len = cpu_to_le16(sizeof(phy_qcfg_resp));
1043 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
1044 phy_qcfg_resp.valid = 1;
1045
1046 if (vf->flags & BNXT_VF_LINK_UP) {
1047 /* if physical link is down, force link up on VF */
1048 if (phy_qcfg_resp.link !=
1049 PORT_PHY_QCFG_RESP_LINK_LINK) {
1050 phy_qcfg_resp.link =
1051 PORT_PHY_QCFG_RESP_LINK_LINK;
1052 phy_qcfg_resp.link_speed = cpu_to_le16(
1053 PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
1054 phy_qcfg_resp.duplex_cfg =
1055 PORT_PHY_QCFG_RESP_DUPLEX_CFG_FULL;
1056 phy_qcfg_resp.duplex_state =
1057 PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL;
1058 phy_qcfg_resp.pause =
1059 (PORT_PHY_QCFG_RESP_PAUSE_TX |
1060 PORT_PHY_QCFG_RESP_PAUSE_RX);
1061 }
1062 } else {
1063 /* force link down */
1064 phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
1065 phy_qcfg_resp.link_speed = 0;
1066 phy_qcfg_resp.duplex_state =
1067 PORT_PHY_QCFG_RESP_DUPLEX_STATE_HALF;
1068 phy_qcfg_resp.pause = 0;
1069 }
1070 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
1071 phy_qcfg_req->resp_addr,
1072 phy_qcfg_req->cmpl_ring,
1073 sizeof(phy_qcfg_resp));
1074 }
1075 return rc;
1076 }
1077
1078 static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
1079 {
1080 int rc = 0;
1081 struct input *encap_req = vf->hwrm_cmd_req_addr;
1082 u32 req_type = le16_to_cpu(encap_req->req_type);
1083
1084 switch (req_type) {
1085 case HWRM_FUNC_VF_CFG:
1086 rc = bnxt_vf_configure_mac(bp, vf);
1087 break;
1088 case HWRM_CFA_L2_FILTER_ALLOC:
1089 rc = bnxt_vf_validate_set_mac(bp, vf);
1090 break;
1091 case HWRM_FUNC_CFG:
1092 /* TODO Validate if VF is allowed to change mac address,
1093 * mtu, num of rings etc
1094 */
1095 rc = bnxt_hwrm_exec_fwd_resp(
1096 bp, vf, sizeof(struct hwrm_func_cfg_input));
1097 break;
1098 case HWRM_PORT_PHY_QCFG:
1099 rc = bnxt_vf_set_link(bp, vf);
1100 break;
1101 default:
1102 break;
1103 }
1104 return rc;
1105 }
1106
1107 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1108 {
1109 u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
1110
1111 /* Scan through VF's and process commands */
1112 while (1) {
1113 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
1114 if (vf_id >= active_vfs)
1115 break;
1116
1117 clear_bit(vf_id, bp->pf.vf_event_bmap);
1118 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
1119 i = vf_id + 1;
1120 }
1121 }
1122
1123 void bnxt_update_vf_mac(struct bnxt *bp)
1124 {
1125 struct hwrm_func_qcaps_input req = {0};
1126 struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
1127
1128 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
1129 req.fid = cpu_to_le16(0xffff);
1130
1131 mutex_lock(&bp->hwrm_cmd_lock);
1132 if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
1133 goto update_vf_mac_exit;
1134
1135 /* Store MAC address from the firmware. There are 2 cases:
1136 * 1. MAC address is valid. It is assigned from the PF and we
1137 * need to override the current VF MAC address with it.
1138 * 2. MAC address is zero. The VF will use a random MAC address by
1139 * default but the stored zero MAC will allow the VF user to change
1140 * the random MAC address using ndo_set_mac_address() if he wants.
1141 */
1142 if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr))
1143 memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
1144
1145 /* overwrite netdev dev_addr with admin VF MAC */
1146 if (is_valid_ether_addr(bp->vf.mac_addr))
1147 memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
1148 update_vf_mac_exit:
1149 mutex_unlock(&bp->hwrm_cmd_lock);
1150 }
1151
1152 int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
1153 {
1154 struct hwrm_func_vf_cfg_input req = {0};
1155 int rc = 0;
1156
1157 if (!BNXT_VF(bp))
1158 return 0;
1159
1160 if (bp->hwrm_spec_code < 0x10202) {
1161 if (is_valid_ether_addr(bp->vf.mac_addr))
1162 rc = -EADDRNOTAVAIL;
1163 goto mac_done;
1164 }
1165 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_CFG, -1, -1);
1166 req.enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
1167 memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
1168 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
1169 mac_done:
1170 if (rc && strict) {
1171 rc = -EADDRNOTAVAIL;
1172 netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
1173 mac);
1174 return rc;
1175 }
1176 return 0;
1177 }
1178 #else
1179
1180 int bnxt_cfg_hw_sriov(struct bnxt *bp, int *num_vfs, bool reset)
1181 {
1182 if (*num_vfs)
1183 return -EOPNOTSUPP;
1184 return 0;
1185 }
1186
1187 void bnxt_sriov_disable(struct bnxt *bp)
1188 {
1189 }
1190
1191 void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
1192 {
1193 netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
1194 }
1195
1196 void bnxt_update_vf_mac(struct bnxt *bp)
1197 {
1198 }
1199
1200 int bnxt_approve_mac(struct bnxt *bp, u8 *mac, bool strict)
1201 {
1202 return 0;
1203 }
1204 #endif
Linux with added FPC-III support