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bnxt_en: Cleanup bnxt_hwrm_func_cfg().
[mirror_ubuntu-bionic-kernel.git] / drivers / net / ethernet / broadcom / bnxt / bnxt_sriov.c
CommitLineData
c0c050c5
MC		 1/* Broadcom NetXtreme-C/E network driver.
2 *
3 * Copyright (c) 2014-2015 Broadcom Corporation
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation.
8 */
9
10#include <linux/module.h>
11#include <linux/pci.h>
12#include <linux/netdevice.h>
13#include <linux/if_vlan.h>
14#include <linux/interrupt.h>
15#include <linux/etherdevice.h>
16#include "bnxt_hsi.h"
17#include "bnxt.h"
18#include "bnxt_sriov.h"
19#include "bnxt_ethtool.h"
20
21#ifdef CONFIG_BNXT_SRIOV
22static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
23{
caefe526 24 if (!test_bit(BNXT_STATE_OPEN, &bp->state)) {
c0c050c5
MC		 25 netdev_err(bp->dev, "vf ndo called though PF is down\n");
26 return -EINVAL;
27 }
28 if (!bp->pf.active_vfs) {
29 netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
30 return -EINVAL;
31 }
32 if (vf_id >= bp->pf.max_vfs) {
33 netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
34 return -EINVAL;
35 }
36 return 0;
37}
38
39int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
40{
41 struct hwrm_func_cfg_input req = {0};
42 struct bnxt *bp = netdev_priv(dev);
43 struct bnxt_vf_info *vf;
44 bool old_setting = false;
45 u32 func_flags;
46 int rc;
47
48 rc = bnxt_vf_ndo_prep(bp, vf_id);
49 if (rc)
50 return rc;
51
52 vf = &bp->pf.vf[vf_id];
53 if (vf->flags & BNXT_VF_SPOOFCHK)
54 old_setting = true;
55 if (old_setting == setting)
56 return 0;
57
58 func_flags = vf->func_flags;
59 if (setting)
60 func_flags |= FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK;
61 else
62 func_flags &= ~FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK;
63 /*TODO: if the driver supports VLAN filter on guest VLAN,
64 * the spoof check should also include vlan anti-spoofing
65 */
66 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
67 req.vf_id = cpu_to_le16(vf->fw_fid);
68 req.flags = cpu_to_le32(func_flags);
69 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
70 if (!rc) {
71 vf->func_flags = func_flags;
72 if (setting)
73 vf->flags |= BNXT_VF_SPOOFCHK;
74 else
75 vf->flags &= ~BNXT_VF_SPOOFCHK;
76 }
77 return rc;
78}
79
80int bnxt_get_vf_config(struct net_device *dev, int vf_id,
81 struct ifla_vf_info *ivi)
82{
83 struct bnxt *bp = netdev_priv(dev);
84 struct bnxt_vf_info *vf;
85 int rc;
86
87 rc = bnxt_vf_ndo_prep(bp, vf_id);
88 if (rc)
89 return rc;
90
91 ivi->vf = vf_id;
92 vf = &bp->pf.vf[vf_id];
93
94 memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
95 ivi->max_tx_rate = vf->max_tx_rate;
96 ivi->min_tx_rate = vf->min_tx_rate;
97 ivi->vlan = vf->vlan;
98 ivi->qos = vf->flags & BNXT_VF_QOS;
99 ivi->spoofchk = vf->flags & BNXT_VF_SPOOFCHK;
100 if (!(vf->flags & BNXT_VF_LINK_FORCED))
101 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
102 else if (vf->flags & BNXT_VF_LINK_UP)
103 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
104 else
105 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
106
107 return 0;
108}
109
110int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
111{
112 struct hwrm_func_cfg_input req = {0};
113 struct bnxt *bp = netdev_priv(dev);
114 struct bnxt_vf_info *vf;
115 int rc;
116
117 rc = bnxt_vf_ndo_prep(bp, vf_id);
118 if (rc)
119 return rc;
120 /* reject bc or mc mac addr, zero mac addr means allow
121 * VF to use its own mac addr
122 */
123 if (is_multicast_ether_addr(mac)) {
124 netdev_err(dev, "Invalid VF ethernet address\n");
125 return -EINVAL;
126 }
127 vf = &bp->pf.vf[vf_id];
128
129 memcpy(vf->mac_addr, mac, ETH_ALEN);
130 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
131 req.vf_id = cpu_to_le16(vf->fw_fid);
132 req.flags = cpu_to_le32(vf->func_flags);
133 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
134 memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
135 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
136}
137
138int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos)
139{
140 struct hwrm_func_cfg_input req = {0};
141 struct bnxt *bp = netdev_priv(dev);
142 struct bnxt_vf_info *vf;
143 u16 vlan_tag;
144 int rc;
145
146 rc = bnxt_vf_ndo_prep(bp, vf_id);
147 if (rc)
148 return rc;
149
150 /* TODO: needed to implement proper handling of user priority,
151 * currently fail the command if there is valid priority
152 */
153 if (vlan_id > 4095 || qos)
154 return -EINVAL;
155
156 vf = &bp->pf.vf[vf_id];
157 vlan_tag = vlan_id;
158 if (vlan_tag == vf->vlan)
159 return 0;
160
161 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
162 req.vf_id = cpu_to_le16(vf->fw_fid);
163 req.flags = cpu_to_le32(vf->func_flags);
164 req.dflt_vlan = cpu_to_le16(vlan_tag);
165 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
166 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
167 if (!rc)
168 vf->vlan = vlan_tag;
169 return rc;
170}
171
172int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
173 int max_tx_rate)
174{
175 struct hwrm_func_cfg_input req = {0};
176 struct bnxt *bp = netdev_priv(dev);
177 struct bnxt_vf_info *vf;
178 u32 pf_link_speed;
179 int rc;
180
181 rc = bnxt_vf_ndo_prep(bp, vf_id);
182 if (rc)
183 return rc;
184
185 vf = &bp->pf.vf[vf_id];
186 pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
187 if (max_tx_rate > pf_link_speed) {
188 netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
189 max_tx_rate, vf_id);
190 return -EINVAL;
191 }
192
193 if (min_tx_rate > pf_link_speed || min_tx_rate > max_tx_rate) {
194 netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
195 min_tx_rate, vf_id);
196 return -EINVAL;
197 }
198 if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
199 return 0;
200 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
201 req.vf_id = cpu_to_le16(vf->fw_fid);
202 req.flags = cpu_to_le32(vf->func_flags);
203 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
204 req.max_bw = cpu_to_le32(max_tx_rate);
205 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
206 req.min_bw = cpu_to_le32(min_tx_rate);
207 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
208 if (!rc) {
209 vf->min_tx_rate = min_tx_rate;
210 vf->max_tx_rate = max_tx_rate;
211 }
212 return rc;
213}
214
215int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
216{
217 struct bnxt *bp = netdev_priv(dev);
218 struct bnxt_vf_info *vf;
219 int rc;
220
221 rc = bnxt_vf_ndo_prep(bp, vf_id);
222 if (rc)
223 return rc;
224
225 vf = &bp->pf.vf[vf_id];
226
227 vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
228 switch (link) {
229 case IFLA_VF_LINK_STATE_AUTO:
230 vf->flags |= BNXT_VF_LINK_UP;
231 break;
232 case IFLA_VF_LINK_STATE_DISABLE:
233 vf->flags |= BNXT_VF_LINK_FORCED;
234 break;
235 case IFLA_VF_LINK_STATE_ENABLE:
236 vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
237 break;
238 default:
239 netdev_err(bp->dev, "Invalid link option\n");
240 rc = -EINVAL;
241 break;
242 }
243 /* CHIMP TODO: send msg to VF to update new link state */
244
245 return rc;
246}
247
248static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
249{
250 int i;
251 struct bnxt_vf_info *vf;
252
253 for (i = 0; i < num_vfs; i++) {
254 vf = &bp->pf.vf[i];
255 memset(vf, 0, sizeof(*vf));
256 vf->flags = BNXT_VF_QOS | BNXT_VF_LINK_UP;
257 }
258 return 0;
259}
260
4bb6cdce 261static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
c0c050c5
MC		 262{
263 int i, rc = 0;
264 struct bnxt_pf_info *pf = &bp->pf;
265 struct hwrm_func_vf_resc_free_input req = {0};
266
267 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESC_FREE, -1, -1);
268
269 mutex_lock(&bp->hwrm_cmd_lock);
4bb6cdce 270 for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
c0c050c5
MC		 271 req.vf_id = cpu_to_le16(i);
272 rc = _hwrm_send_message(bp, &req, sizeof(req),
273 HWRM_CMD_TIMEOUT);
274 if (rc)
275 break;
276 }
277 mutex_unlock(&bp->hwrm_cmd_lock);
278 return rc;
279}
280
281static void bnxt_free_vf_resources(struct bnxt *bp)
282{
283 struct pci_dev *pdev = bp->pdev;
284 int i;
285
286 kfree(bp->pf.vf_event_bmap);
287 bp->pf.vf_event_bmap = NULL;
288
289 for (i = 0; i < 4; i++) {
290 if (bp->pf.hwrm_cmd_req_addr[i]) {
291 dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
292 bp->pf.hwrm_cmd_req_addr[i],
293 bp->pf.hwrm_cmd_req_dma_addr[i]);
294 bp->pf.hwrm_cmd_req_addr[i] = NULL;
295 }
296 }
297
298 kfree(bp->pf.vf);
299 bp->pf.vf = NULL;
300}
301
302static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
303{
304 struct pci_dev *pdev = bp->pdev;
305 u32 nr_pages, size, i, j, k = 0;
306
307 bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
308 if (!bp->pf.vf)
309 return -ENOMEM;
310
311 bnxt_set_vf_attr(bp, num_vfs);
312
313 size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
314 nr_pages = size / BNXT_PAGE_SIZE;
315 if (size & (BNXT_PAGE_SIZE - 1))
316 nr_pages++;
317
318 for (i = 0; i < nr_pages; i++) {
319 bp->pf.hwrm_cmd_req_addr[i] =
320 dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
321 &bp->pf.hwrm_cmd_req_dma_addr[i],
322 GFP_KERNEL);
323
324 if (!bp->pf.hwrm_cmd_req_addr[i])
325 return -ENOMEM;
326
327 for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
328 struct bnxt_vf_info *vf = &bp->pf.vf[k];
329
330 vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
331 j * BNXT_HWRM_REQ_MAX_SIZE;
332 vf->hwrm_cmd_req_dma_addr =
333 bp->pf.hwrm_cmd_req_dma_addr[i] + j *
334 BNXT_HWRM_REQ_MAX_SIZE;
335 k++;
336 }
337 }
338
339 /* Max 128 VF's */
340 bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
341 if (!bp->pf.vf_event_bmap)
342 return -ENOMEM;
343
344 bp->pf.hwrm_cmd_req_pages = nr_pages;
345 return 0;
346}
347
348static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
349{
350 struct hwrm_func_buf_rgtr_input req = {0};
351
352 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BUF_RGTR, -1, -1);
353
354 req.req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
355 req.req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
356 req.req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
357 req.req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
358 req.req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
359 req.req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
360 req.req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
361
362 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
363}
364
365/* only call by PF to reserve resources for VF */
92268c32 366static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
c0c050c5
MC		 367{
368 u32 rc = 0, mtu, i;
369 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
370 struct hwrm_func_cfg_input req = {0};
371 struct bnxt_pf_info *pf = &bp->pf;
372
373 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
374
375 /* Remaining rings are distributed equally amongs VF's for now */
376 /* TODO: the following workaroud is needed to restrict total number
377 * of vf_cp_rings not exceed number of HW ring groups. This WA should
378 * be removed once new HWRM provides HW ring groups capability in
379 * hwrm_func_qcap.
380 */
92268c32
MC		 381 vf_cp_rings = min_t(u16, pf->max_cp_rings, pf->max_stat_ctxs);
382 vf_cp_rings = (vf_cp_rings - bp->cp_nr_rings) / num_vfs;
c0c050c5 383 /* TODO: restore this logic below once the WA above is removed */
92268c32
MC		 384 /* vf_cp_rings = (pf->max_cp_rings - bp->cp_nr_rings) / num_vfs; */
385 vf_stat_ctx = (pf->max_stat_ctxs - bp->num_stat_ctxs) / num_vfs;
c0c050c5 386 if (bp->flags & BNXT_FLAG_AGG_RINGS)
92268c32
MC		 387 vf_rx_rings = (pf->max_rx_rings - bp->rx_nr_rings * 2) /
388 num_vfs;
c0c050c5 389 else
92268c32
MC		 390 vf_rx_rings = (pf->max_rx_rings - bp->rx_nr_rings) / num_vfs;
391 vf_tx_rings = (pf->max_tx_rings - bp->tx_nr_rings) / num_vfs;
c0c050c5
MC		 392
393 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
394 FUNC_CFG_REQ_ENABLES_MRU |
395 FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
396 FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
397 FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
398 FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
399 FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
400 FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
401 FUNC_CFG_REQ_ENABLES_NUM_VNICS);
402
403 mtu = bp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
404 req.mru = cpu_to_le16(mtu);
405 req.mtu = cpu_to_le16(mtu);
406
407 req.num_rsscos_ctxs = cpu_to_le16(1);
408 req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
409 req.num_tx_rings = cpu_to_le16(vf_tx_rings);
410 req.num_rx_rings = cpu_to_le16(vf_rx_rings);
411 req.num_l2_ctxs = cpu_to_le16(4);
412 vf_vnics = 1;
413
414 req.num_vnics = cpu_to_le16(vf_vnics);
415 /* FIXME spec currently uses 1 bit for stats ctx */
416 req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
417
418 mutex_lock(&bp->hwrm_cmd_lock);
92268c32 419 for (i = 0; i < num_vfs; i++) {
c0c050c5
MC		 420 req.vf_id = cpu_to_le16(pf->first_vf_id + i);
421 rc = _hwrm_send_message(bp, &req, sizeof(req),
422 HWRM_CMD_TIMEOUT);
423 if (rc)
424 break;
92268c32
MC		 425 pf->active_vfs = i + 1;
426 pf->vf[i].fw_fid = le16_to_cpu(req.vf_id);
c0c050c5
MC		 427 }
428 mutex_unlock(&bp->hwrm_cmd_lock);
429 if (!rc) {
92268c32 430 pf->max_pf_tx_rings = bp->tx_nr_rings;
c0c050c5 431 if (bp->flags & BNXT_FLAG_AGG_RINGS)
92268c32 432 pf->max_pf_rx_rings = bp->rx_nr_rings * 2;
c0c050c5 433 else
92268c32 434 pf->max_pf_rx_rings = bp->rx_nr_rings;
c0c050c5
MC		 435 }
436 return rc;
437}
438
439static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
440{
441 int rc = 0, vfs_supported;
442 int min_rx_rings, min_tx_rings, min_rss_ctxs;
443 int tx_ok = 0, rx_ok = 0, rss_ok = 0;
444
445 /* Check if we can enable requested num of vf's. At a mininum
446 * we require 1 RX 1 TX rings for each VF. In this minimum conf
447 * features like TPA will not be available.
448 */
449 vfs_supported = *num_vfs;
450
451 while (vfs_supported) {
452 min_rx_rings = vfs_supported;
453 min_tx_rings = vfs_supported;
454 min_rss_ctxs = vfs_supported;
455
456 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
457 if (bp->pf.max_rx_rings - bp->rx_nr_rings * 2 >=
458 min_rx_rings)
459 rx_ok = 1;
460 } else {
461 if (bp->pf.max_rx_rings - bp->rx_nr_rings >=
462 min_rx_rings)
463 rx_ok = 1;
464 }
465
466 if (bp->pf.max_tx_rings - bp->tx_nr_rings >= min_tx_rings)
467 tx_ok = 1;
468
469 if (bp->pf.max_rsscos_ctxs - bp->rsscos_nr_ctxs >= min_rss_ctxs)
470 rss_ok = 1;
471
472 if (tx_ok && rx_ok && rss_ok)
473 break;
474
475 vfs_supported--;
476 }
477
478 if (!vfs_supported) {
479 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
480 return -EINVAL;
481 }
482
483 if (vfs_supported != *num_vfs) {
484 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
485 *num_vfs, vfs_supported);
486 *num_vfs = vfs_supported;
487 }
488
489 rc = bnxt_alloc_vf_resources(bp, *num_vfs);
490 if (rc)
491 goto err_out1;
492
493 /* Reserve resources for VFs */
92268c32 494 rc = bnxt_hwrm_func_cfg(bp, *num_vfs);
c0c050c5
MC		 495 if (rc)
496 goto err_out2;
497
498 /* Register buffers for VFs */
499 rc = bnxt_hwrm_func_buf_rgtr(bp);
500 if (rc)
501 goto err_out2;
502
503 rc = pci_enable_sriov(bp->pdev, *num_vfs);
504 if (rc)
505 goto err_out2;
506
507 return 0;
508
509err_out2:
510 /* Free the resources reserved for various VF's */
4bb6cdce 511 bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
c0c050c5
MC		 512
513err_out1:
514 bnxt_free_vf_resources(bp);
515
516 return rc;
517}
518
519void bnxt_sriov_disable(struct bnxt *bp)
520{
4bb6cdce 521 u16 num_vfs = pci_num_vf(bp->pdev);
c0c050c5 522
4bb6cdce
JH		 523 if (!num_vfs)
524 return;
c0c050c5 525
4bb6cdce
JH		 526 if (pci_vfs_assigned(bp->pdev)) {
527 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
528 num_vfs);
529 } else {
530 pci_disable_sriov(bp->pdev);
531 /* Free the HW resources reserved for various VF's */
532 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
533 }
c0c050c5
MC		 534
535 bnxt_free_vf_resources(bp);
536
537 bp->pf.active_vfs = 0;
538 bp->pf.max_pf_rx_rings = bp->pf.max_rx_rings;
539 bp->pf.max_pf_tx_rings = bp->pf.max_tx_rings;
540}
541
542int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
543{
544 struct net_device *dev = pci_get_drvdata(pdev);
545 struct bnxt *bp = netdev_priv(dev);
546
547 if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
548 netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
549 return 0;
550 }
551
552 rtnl_lock();
553 if (!netif_running(dev)) {
554 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
555 rtnl_unlock();
556 return 0;
557 }
558 bp->sriov_cfg = true;
559 rtnl_unlock();
4bb6cdce
JH		 560
561 if (pci_vfs_assigned(bp->pdev)) {
562 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
563 num_vfs = 0;
564 goto sriov_cfg_exit;
c0c050c5
MC		 565 }
566
567 /* Check if enabled VFs is same as requested */
4bb6cdce
JH		 568 if (num_vfs && num_vfs == bp->pf.active_vfs)
569 goto sriov_cfg_exit;
570
571 /* if there are previous existing VFs, clean them up */
572 bnxt_sriov_disable(bp);
573 if (!num_vfs)
574 goto sriov_cfg_exit;
c0c050c5
MC		 575
576 bnxt_sriov_enable(bp, &num_vfs);
577
4bb6cdce 578sriov_cfg_exit:
c0c050c5
MC		 579 bp->sriov_cfg = false;
580 wake_up(&bp->sriov_cfg_wait);
581
582 return num_vfs;
583}
584
585static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
586 void *encap_resp, __le64 encap_resp_addr,
587 __le16 encap_resp_cpr, u32 msg_size)
588{
589 int rc = 0;
590 struct hwrm_fwd_resp_input req = {0};
591 struct hwrm_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
592
593 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
594
595 /* Set the new target id */
596 req.target_id = cpu_to_le16(vf->fw_fid);
597 req.encap_resp_len = cpu_to_le16(msg_size);
598 req.encap_resp_addr = encap_resp_addr;
599 req.encap_resp_cmpl_ring = encap_resp_cpr;
600 memcpy(req.encap_resp, encap_resp, msg_size);
601
602 mutex_lock(&bp->hwrm_cmd_lock);
603 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
604
605 if (rc) {
606 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
607 goto fwd_resp_exit;
608 }
609
610 if (resp->error_code) {
611 netdev_err(bp->dev, "hwrm_fwd_resp error %d\n",
612 resp->error_code);
613 rc = -1;
614 }
615
616fwd_resp_exit:
617 mutex_unlock(&bp->hwrm_cmd_lock);
618 return rc;
619}
620
621static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
622 u32 msg_size)
623{
624 int rc = 0;
625 struct hwrm_reject_fwd_resp_input req = {0};
626 struct hwrm_reject_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
627
628 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
629 /* Set the new target id */
630 req.target_id = cpu_to_le16(vf->fw_fid);
631 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
632
633 mutex_lock(&bp->hwrm_cmd_lock);
634 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
635
636 if (rc) {
637 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
638 goto fwd_err_resp_exit;
639 }
640
641 if (resp->error_code) {
642 netdev_err(bp->dev, "hwrm_fwd_err_resp error %d\n",
643 resp->error_code);
644 rc = -1;
645 }
646
647fwd_err_resp_exit:
648 mutex_unlock(&bp->hwrm_cmd_lock);
649 return rc;
650}
651
652static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
653 u32 msg_size)
654{
655 int rc = 0;
656 struct hwrm_exec_fwd_resp_input req = {0};
657 struct hwrm_exec_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
658
659 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
660 /* Set the new target id */
661 req.target_id = cpu_to_le16(vf->fw_fid);
662 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
663
664 mutex_lock(&bp->hwrm_cmd_lock);
665 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
666
667 if (rc) {
668 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
669 goto exec_fwd_resp_exit;
670 }
671
672 if (resp->error_code) {
673 netdev_err(bp->dev, "hwrm_exec_fw_resp error %d\n",
674 resp->error_code);
675 rc = -1;
676 }
677
678exec_fwd_resp_exit:
679 mutex_unlock(&bp->hwrm_cmd_lock);
680 return rc;
681}
682
683static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
684{
685 u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
686 struct hwrm_cfa_l2_filter_alloc_input *req =
687 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
688
689 if (!is_valid_ether_addr(vf->mac_addr) ||
690 ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
691 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
692 else
693 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
694}
695
696static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
697{
698 int rc = 0;
699
700 if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
701 /* real link */
702 rc = bnxt_hwrm_exec_fwd_resp(
703 bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
704 } else {
705 struct hwrm_port_phy_qcfg_output phy_qcfg_resp;
706 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
707
708 phy_qcfg_req =
709 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
710 mutex_lock(&bp->hwrm_cmd_lock);
711 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
712 sizeof(phy_qcfg_resp));
713 mutex_unlock(&bp->hwrm_cmd_lock);
714 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
715
716 if (vf->flags & BNXT_VF_LINK_UP) {
717 /* if physical link is down, force link up on VF */
718 if (phy_qcfg_resp.link ==
719 PORT_PHY_QCFG_RESP_LINK_NO_LINK) {
720 phy_qcfg_resp.link =
721 PORT_PHY_QCFG_RESP_LINK_LINK;
722 if (phy_qcfg_resp.auto_link_speed)
723 phy_qcfg_resp.link_speed =
724 phy_qcfg_resp.auto_link_speed;
725 else
726 phy_qcfg_resp.link_speed =
727 phy_qcfg_resp.force_link_speed;
728 phy_qcfg_resp.duplex =
729 PORT_PHY_QCFG_RESP_DUPLEX_FULL;
730 phy_qcfg_resp.pause =
731 (PORT_PHY_QCFG_RESP_PAUSE_TX |
732 PORT_PHY_QCFG_RESP_PAUSE_RX);
733 }
734 } else {
735 /* force link down */
736 phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
737 phy_qcfg_resp.link_speed = 0;
738 phy_qcfg_resp.duplex = PORT_PHY_QCFG_RESP_DUPLEX_HALF;
739 phy_qcfg_resp.pause = 0;
740 }
741 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
742 phy_qcfg_req->resp_addr,
743 phy_qcfg_req->cmpl_ring,
744 sizeof(phy_qcfg_resp));
745 }
746 return rc;
747}
748
749static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
750{
751 int rc = 0;
752 struct hwrm_cmd_req_hdr *encap_req = vf->hwrm_cmd_req_addr;
753 u32 req_type = le32_to_cpu(encap_req->cmpl_ring_req_type) & 0xffff;
754
755 switch (req_type) {
756 case HWRM_CFA_L2_FILTER_ALLOC:
757 rc = bnxt_vf_validate_set_mac(bp, vf);
758 break;
759 case HWRM_FUNC_CFG:
760 /* TODO Validate if VF is allowed to change mac address,
761 * mtu, num of rings etc
762 */
763 rc = bnxt_hwrm_exec_fwd_resp(
764 bp, vf, sizeof(struct hwrm_func_cfg_input));
765 break;
766 case HWRM_PORT_PHY_QCFG:
767 rc = bnxt_vf_set_link(bp, vf);
768 break;
769 default:
770 break;
771 }
772 return rc;
773}
774
775void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
776{
777 u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
778
779 /* Scan through VF's and process commands */
780 while (1) {
781 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
782 if (vf_id >= active_vfs)
783 break;
784
785 clear_bit(vf_id, bp->pf.vf_event_bmap);
786 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
787 i = vf_id + 1;
788 }
789}
379a80a1
MC		 790
791void bnxt_update_vf_mac(struct bnxt *bp)
792{
793 struct hwrm_func_qcaps_input req = {0};
794 struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
795
796 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
797 req.fid = cpu_to_le16(0xffff);
798
799 mutex_lock(&bp->hwrm_cmd_lock);
800 if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
801 goto update_vf_mac_exit;
802
803 if (!is_valid_ether_addr(resp->perm_mac_address))
804 goto update_vf_mac_exit;
805
bdd4347b
JH		 806 if (!ether_addr_equal(resp->perm_mac_address, bp->vf.mac_addr))
807 memcpy(bp->vf.mac_addr, resp->perm_mac_address, ETH_ALEN);
808 /* overwrite netdev dev_adr with admin VF MAC */
379a80a1
MC		 809 memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
810update_vf_mac_exit:
811 mutex_unlock(&bp->hwrm_cmd_lock);
812}
813
c0c050c5
MC		 814#else
815
816void bnxt_sriov_disable(struct bnxt *bp)
817{
818}
819
820void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
821{
379a80a1
MC		 822 netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
823}
824
825void bnxt_update_vf_mac(struct bnxt *bp)
826{
c0c050c5
MC		 827}
828#endif
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