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bnxt_en: Shutdown link when device is closed.
[linux-2.6-block.git] / drivers / net / ethernet / broadcom / bnxt / bnxt_sriov.c
CommitLineData
c0c050c5
MC		 1/* Broadcom NetXtreme-C/E network driver.
2 *
11f15ed3 3 * Copyright (c) 2014-2016 Broadcom Corporation
c0c050c5
MC		 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);
c193554e 67 req.fid = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 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);
c193554e 131 req.fid = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 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);
c193554e 162 req.fid = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 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);
c193554e 201 req.fid = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 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;
b72d4a68 370 u16 vf_ring_grps;
c0c050c5
MC		 371 struct hwrm_func_cfg_input req = {0};
372 struct bnxt_pf_info *pf = &bp->pf;
373
374 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
375
376 /* Remaining rings are distributed equally amongs VF's for now */
377 /* TODO: the following workaroud is needed to restrict total number
378 * of vf_cp_rings not exceed number of HW ring groups. This WA should
379 * be removed once new HWRM provides HW ring groups capability in
380 * hwrm_func_qcap.
381 */
92268c32
MC		 382 vf_cp_rings = min_t(u16, pf->max_cp_rings, pf->max_stat_ctxs);
383 vf_cp_rings = (vf_cp_rings - bp->cp_nr_rings) / num_vfs;
c0c050c5 384 /* TODO: restore this logic below once the WA above is removed */
92268c32
MC		 385 /* vf_cp_rings = (pf->max_cp_rings - bp->cp_nr_rings) / num_vfs; */
386 vf_stat_ctx = (pf->max_stat_ctxs - bp->num_stat_ctxs) / num_vfs;
c0c050c5 387 if (bp->flags & BNXT_FLAG_AGG_RINGS)
92268c32
MC		 388 vf_rx_rings = (pf->max_rx_rings - bp->rx_nr_rings * 2) /
389 num_vfs;
c0c050c5 390 else
92268c32 391 vf_rx_rings = (pf->max_rx_rings - bp->rx_nr_rings) / num_vfs;
b72d4a68 392 vf_ring_grps = (bp->pf.max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
92268c32 393 vf_tx_rings = (pf->max_tx_rings - bp->tx_nr_rings) / num_vfs;
c0c050c5
MC		 394
395 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
396 FUNC_CFG_REQ_ENABLES_MRU |
397 FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
398 FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
399 FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
400 FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
401 FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
402 FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
b72d4a68
MC		 403 FUNC_CFG_REQ_ENABLES_NUM_VNICS |
404 FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
c0c050c5
MC		 405
406 mtu = bp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
407 req.mru = cpu_to_le16(mtu);
408 req.mtu = cpu_to_le16(mtu);
409
410 req.num_rsscos_ctxs = cpu_to_le16(1);
411 req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
412 req.num_tx_rings = cpu_to_le16(vf_tx_rings);
413 req.num_rx_rings = cpu_to_le16(vf_rx_rings);
b72d4a68 414 req.num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
c0c050c5
MC		 415 req.num_l2_ctxs = cpu_to_le16(4);
416 vf_vnics = 1;
417
418 req.num_vnics = cpu_to_le16(vf_vnics);
419 /* FIXME spec currently uses 1 bit for stats ctx */
420 req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
421
422 mutex_lock(&bp->hwrm_cmd_lock);
92268c32 423 for (i = 0; i < num_vfs; i++) {
c193554e 424 req.fid = cpu_to_le16(pf->first_vf_id + i);
c0c050c5
MC		 425 rc = _hwrm_send_message(bp, &req, sizeof(req),
426 HWRM_CMD_TIMEOUT);
427 if (rc)
428 break;
92268c32 429 pf->active_vfs = i + 1;
c193554e 430 pf->vf[i].fw_fid = le16_to_cpu(req.fid);
c0c050c5
MC		 431 }
432 mutex_unlock(&bp->hwrm_cmd_lock);
433 if (!rc) {
4a21b49b
MC		 434 pf->max_tx_rings -= vf_tx_rings * num_vfs;
435 pf->max_rx_rings -= vf_rx_rings * num_vfs;
b72d4a68 436 pf->max_hw_ring_grps -= vf_ring_grps * num_vfs;
4a21b49b
MC		 437 pf->max_cp_rings -= vf_cp_rings * num_vfs;
438 pf->max_rsscos_ctxs -= num_vfs;
439 pf->max_stat_ctxs -= vf_stat_ctx * num_vfs;
440 pf->max_vnics -= vf_vnics * num_vfs;
c0c050c5
MC		 441 }
442 return rc;
443}
444
445static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
446{
447 int rc = 0, vfs_supported;
448 int min_rx_rings, min_tx_rings, min_rss_ctxs;
449 int tx_ok = 0, rx_ok = 0, rss_ok = 0;
450
451 /* Check if we can enable requested num of vf's. At a mininum
452 * we require 1 RX 1 TX rings for each VF. In this minimum conf
453 * features like TPA will not be available.
454 */
455 vfs_supported = *num_vfs;
456
457 while (vfs_supported) {
458 min_rx_rings = vfs_supported;
459 min_tx_rings = vfs_supported;
460 min_rss_ctxs = vfs_supported;
461
462 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
463 if (bp->pf.max_rx_rings - bp->rx_nr_rings * 2 >=
464 min_rx_rings)
465 rx_ok = 1;
466 } else {
467 if (bp->pf.max_rx_rings - bp->rx_nr_rings >=
468 min_rx_rings)
469 rx_ok = 1;
470 }
471
472 if (bp->pf.max_tx_rings - bp->tx_nr_rings >= min_tx_rings)
473 tx_ok = 1;
474
475 if (bp->pf.max_rsscos_ctxs - bp->rsscos_nr_ctxs >= min_rss_ctxs)
476 rss_ok = 1;
477
478 if (tx_ok && rx_ok && rss_ok)
479 break;
480
481 vfs_supported--;
482 }
483
484 if (!vfs_supported) {
485 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
486 return -EINVAL;
487 }
488
489 if (vfs_supported != *num_vfs) {
490 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
491 *num_vfs, vfs_supported);
492 *num_vfs = vfs_supported;
493 }
494
495 rc = bnxt_alloc_vf_resources(bp, *num_vfs);
496 if (rc)
497 goto err_out1;
498
499 /* Reserve resources for VFs */
92268c32 500 rc = bnxt_hwrm_func_cfg(bp, *num_vfs);
c0c050c5
MC		 501 if (rc)
502 goto err_out2;
503
504 /* Register buffers for VFs */
505 rc = bnxt_hwrm_func_buf_rgtr(bp);
506 if (rc)
507 goto err_out2;
508
509 rc = pci_enable_sriov(bp->pdev, *num_vfs);
510 if (rc)
511 goto err_out2;
512
513 return 0;
514
515err_out2:
516 /* Free the resources reserved for various VF's */
4bb6cdce 517 bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
c0c050c5
MC		 518
519err_out1:
520 bnxt_free_vf_resources(bp);
521
522 return rc;
523}
524
19241368
JH		 525static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
526 struct bnxt_vf_info *vf,
527 u16 event_id)
528{
529 int rc = 0;
530 struct hwrm_fwd_async_event_cmpl_input req = {0};
531 struct hwrm_fwd_async_event_cmpl_output *resp = bp->hwrm_cmd_resp_addr;
532 struct hwrm_async_event_cmpl *async_cmpl;
533
534 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_ASYNC_EVENT_CMPL, -1, -1);
535 if (vf)
536 req.encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
537 else
538 /* broadcast this async event to all VFs */
539 req.encap_async_event_target_id = cpu_to_le16(0xffff);
540 async_cmpl = (struct hwrm_async_event_cmpl *)req.encap_async_event_cmpl;
541 async_cmpl->type =
542 cpu_to_le16(HWRM_ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
543 async_cmpl->event_id = cpu_to_le16(event_id);
544
545 mutex_lock(&bp->hwrm_cmd_lock);
546 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
547
548 if (rc) {
549 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
550 rc);
551 goto fwd_async_event_cmpl_exit;
552 }
553
554 if (resp->error_code) {
555 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl error %d\n",
556 resp->error_code);
557 rc = -1;
558 }
559
560fwd_async_event_cmpl_exit:
561 mutex_unlock(&bp->hwrm_cmd_lock);
562 return rc;
563}
564
c0c050c5
MC		 565void bnxt_sriov_disable(struct bnxt *bp)
566{
4bb6cdce 567 u16 num_vfs = pci_num_vf(bp->pdev);
c0c050c5 568
4bb6cdce
JH		 569 if (!num_vfs)
570 return;
c0c050c5 571
4bb6cdce 572 if (pci_vfs_assigned(bp->pdev)) {
19241368
JH		 573 bnxt_hwrm_fwd_async_event_cmpl(
574 bp, NULL,
575 HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
4bb6cdce
JH		 576 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
577 num_vfs);
578 } else {
579 pci_disable_sriov(bp->pdev);
580 /* Free the HW resources reserved for various VF's */
581 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
582 }
c0c050c5
MC		 583
584 bnxt_free_vf_resources(bp);
585
586 bp->pf.active_vfs = 0;
4a21b49b
MC		 587 /* Reclaim all resources for the PF. */
588 bnxt_hwrm_func_qcaps(bp);
c0c050c5
MC		 589}
590
591int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
592{
593 struct net_device *dev = pci_get_drvdata(pdev);
594 struct bnxt *bp = netdev_priv(dev);
595
596 if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
597 netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
598 return 0;
599 }
600
601 rtnl_lock();
602 if (!netif_running(dev)) {
603 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
604 rtnl_unlock();
605 return 0;
606 }
607 bp->sriov_cfg = true;
608 rtnl_unlock();
4bb6cdce
JH		 609
610 if (pci_vfs_assigned(bp->pdev)) {
611 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
612 num_vfs = 0;
613 goto sriov_cfg_exit;
c0c050c5
MC		 614 }
615
616 /* Check if enabled VFs is same as requested */
4bb6cdce
JH		 617 if (num_vfs && num_vfs == bp->pf.active_vfs)
618 goto sriov_cfg_exit;
619
620 /* if there are previous existing VFs, clean them up */
621 bnxt_sriov_disable(bp);
622 if (!num_vfs)
623 goto sriov_cfg_exit;
c0c050c5
MC		 624
625 bnxt_sriov_enable(bp, &num_vfs);
626
4bb6cdce 627sriov_cfg_exit:
c0c050c5
MC		 628 bp->sriov_cfg = false;
629 wake_up(&bp->sriov_cfg_wait);
630
631 return num_vfs;
632}
633
634static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
635 void *encap_resp, __le64 encap_resp_addr,
636 __le16 encap_resp_cpr, u32 msg_size)
637{
638 int rc = 0;
639 struct hwrm_fwd_resp_input req = {0};
640 struct hwrm_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
641
642 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
643
644 /* Set the new target id */
645 req.target_id = cpu_to_le16(vf->fw_fid);
c193554e 646 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 647 req.encap_resp_len = cpu_to_le16(msg_size);
648 req.encap_resp_addr = encap_resp_addr;
649 req.encap_resp_cmpl_ring = encap_resp_cpr;
650 memcpy(req.encap_resp, encap_resp, msg_size);
651
652 mutex_lock(&bp->hwrm_cmd_lock);
653 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
654
655 if (rc) {
656 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
657 goto fwd_resp_exit;
658 }
659
660 if (resp->error_code) {
661 netdev_err(bp->dev, "hwrm_fwd_resp error %d\n",
662 resp->error_code);
663 rc = -1;
664 }
665
666fwd_resp_exit:
667 mutex_unlock(&bp->hwrm_cmd_lock);
668 return rc;
669}
670
671static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
672 u32 msg_size)
673{
674 int rc = 0;
675 struct hwrm_reject_fwd_resp_input req = {0};
676 struct hwrm_reject_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
677
678 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
679 /* Set the new target id */
680 req.target_id = cpu_to_le16(vf->fw_fid);
c193554e 681 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 682 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
683
684 mutex_lock(&bp->hwrm_cmd_lock);
685 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
686
687 if (rc) {
688 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
689 goto fwd_err_resp_exit;
690 }
691
692 if (resp->error_code) {
693 netdev_err(bp->dev, "hwrm_fwd_err_resp error %d\n",
694 resp->error_code);
695 rc = -1;
696 }
697
698fwd_err_resp_exit:
699 mutex_unlock(&bp->hwrm_cmd_lock);
700 return rc;
701}
702
703static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
704 u32 msg_size)
705{
706 int rc = 0;
707 struct hwrm_exec_fwd_resp_input req = {0};
708 struct hwrm_exec_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
709
710 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
711 /* Set the new target id */
712 req.target_id = cpu_to_le16(vf->fw_fid);
c193554e 713 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 714 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
715
716 mutex_lock(&bp->hwrm_cmd_lock);
717 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
718
719 if (rc) {
720 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
721 goto exec_fwd_resp_exit;
722 }
723
724 if (resp->error_code) {
725 netdev_err(bp->dev, "hwrm_exec_fw_resp error %d\n",
726 resp->error_code);
727 rc = -1;
728 }
729
730exec_fwd_resp_exit:
731 mutex_unlock(&bp->hwrm_cmd_lock);
732 return rc;
733}
734
735static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
736{
737 u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
738 struct hwrm_cfa_l2_filter_alloc_input *req =
739 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
740
741 if (!is_valid_ether_addr(vf->mac_addr) ||
742 ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
743 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
744 else
745 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
746}
747
748static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
749{
750 int rc = 0;
751
752 if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
753 /* real link */
754 rc = bnxt_hwrm_exec_fwd_resp(
755 bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
756 } else {
757 struct hwrm_port_phy_qcfg_output phy_qcfg_resp;
758 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
759
760 phy_qcfg_req =
761 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
762 mutex_lock(&bp->hwrm_cmd_lock);
763 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
764 sizeof(phy_qcfg_resp));
765 mutex_unlock(&bp->hwrm_cmd_lock);
766 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
767
768 if (vf->flags & BNXT_VF_LINK_UP) {
769 /* if physical link is down, force link up on VF */
770 if (phy_qcfg_resp.link ==
771 PORT_PHY_QCFG_RESP_LINK_NO_LINK) {
772 phy_qcfg_resp.link =
773 PORT_PHY_QCFG_RESP_LINK_LINK;
11f15ed3
MC		 774 phy_qcfg_resp.link_speed = cpu_to_le16(
775 PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
c0c050c5
MC		 776 phy_qcfg_resp.duplex =
777 PORT_PHY_QCFG_RESP_DUPLEX_FULL;
778 phy_qcfg_resp.pause =
779 (PORT_PHY_QCFG_RESP_PAUSE_TX |
780 PORT_PHY_QCFG_RESP_PAUSE_RX);
781 }
782 } else {
783 /* force link down */
784 phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
785 phy_qcfg_resp.link_speed = 0;
786 phy_qcfg_resp.duplex = PORT_PHY_QCFG_RESP_DUPLEX_HALF;
787 phy_qcfg_resp.pause = 0;
788 }
789 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
790 phy_qcfg_req->resp_addr,
791 phy_qcfg_req->cmpl_ring,
792 sizeof(phy_qcfg_resp));
793 }
794 return rc;
795}
796
797static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
798{
799 int rc = 0;
a8643e16
MC		 800 struct input *encap_req = vf->hwrm_cmd_req_addr;
801 u32 req_type = le16_to_cpu(encap_req->req_type);
c0c050c5
MC		 802
803 switch (req_type) {
804 case HWRM_CFA_L2_FILTER_ALLOC:
805 rc = bnxt_vf_validate_set_mac(bp, vf);
806 break;
807 case HWRM_FUNC_CFG:
808 /* TODO Validate if VF is allowed to change mac address,
809 * mtu, num of rings etc
810 */
811 rc = bnxt_hwrm_exec_fwd_resp(
812 bp, vf, sizeof(struct hwrm_func_cfg_input));
813 break;
814 case HWRM_PORT_PHY_QCFG:
815 rc = bnxt_vf_set_link(bp, vf);
816 break;
817 default:
818 break;
819 }
820 return rc;
821}
822
823void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
824{
825 u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
826
827 /* Scan through VF's and process commands */
828 while (1) {
829 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
830 if (vf_id >= active_vfs)
831 break;
832
833 clear_bit(vf_id, bp->pf.vf_event_bmap);
834 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
835 i = vf_id + 1;
836 }
837}
379a80a1
MC		 838
839void bnxt_update_vf_mac(struct bnxt *bp)
840{
841 struct hwrm_func_qcaps_input req = {0};
842 struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
843
844 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
845 req.fid = cpu_to_le16(0xffff);
846
847 mutex_lock(&bp->hwrm_cmd_lock);
848 if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
849 goto update_vf_mac_exit;
850
3874d6a8
JH		 851 /* Store MAC address from the firmware. There are 2 cases:
852 * 1. MAC address is valid. It is assigned from the PF and we
853 * need to override the current VF MAC address with it.
854 * 2. MAC address is zero. The VF will use a random MAC address by
855 * default but the stored zero MAC will allow the VF user to change
856 * the random MAC address using ndo_set_mac_address() if he wants.
857 */
11f15ed3
MC		 858 if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr))
859 memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
3874d6a8
JH		 860
861 /* overwrite netdev dev_addr with admin VF MAC */
862 if (is_valid_ether_addr(bp->vf.mac_addr))
863 memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
379a80a1
MC		 864update_vf_mac_exit:
865 mutex_unlock(&bp->hwrm_cmd_lock);
866}
867
c0c050c5
MC		 868#else
869
870void bnxt_sriov_disable(struct bnxt *bp)
871{
872}
873
874void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
875{
379a80a1
MC		 876 netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
877}
878
879void bnxt_update_vf_mac(struct bnxt *bp)
880{
c0c050c5
MC		 881}
882#endif
Linux 6.x block layer and io_uring tree(s)