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bnxt_en: Re-factor bnxt_setup_tc().
[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
350a7149
EW		 22static int bnxt_hwrm_fwd_async_event_cmpl(struct bnxt *bp,
23 struct bnxt_vf_info *vf, u16 event_id)
24{
25 struct hwrm_fwd_async_event_cmpl_output *resp = bp->hwrm_cmd_resp_addr;
26 struct hwrm_fwd_async_event_cmpl_input req = {0};
27 struct hwrm_async_event_cmpl *async_cmpl;
28 int rc = 0;
29
30 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_ASYNC_EVENT_CMPL, -1, -1);
31 if (vf)
32 req.encap_async_event_target_id = cpu_to_le16(vf->fw_fid);
33 else
34 /* broadcast this async event to all VFs */
35 req.encap_async_event_target_id = cpu_to_le16(0xffff);
36 async_cmpl = (struct hwrm_async_event_cmpl *)req.encap_async_event_cmpl;
37 async_cmpl->type =
38 cpu_to_le16(HWRM_ASYNC_EVENT_CMPL_TYPE_HWRM_ASYNC_EVENT);
39 async_cmpl->event_id = cpu_to_le16(event_id);
40
41 mutex_lock(&bp->hwrm_cmd_lock);
42 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
43
44 if (rc) {
45 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl failed. rc:%d\n",
46 rc);
47 goto fwd_async_event_cmpl_exit;
48 }
49
50 if (resp->error_code) {
51 netdev_err(bp->dev, "hwrm_fwd_async_event_cmpl error %d\n",
52 resp->error_code);
53 rc = -1;
54 }
55
56fwd_async_event_cmpl_exit:
57 mutex_unlock(&bp->hwrm_cmd_lock);
58 return rc;
59}
60
c0c050c5
MC		 61static int bnxt_vf_ndo_prep(struct bnxt *bp, int vf_id)
62{
caefe526 63 if (!test_bit(BNXT_STATE_OPEN, &bp->state)) {
c0c050c5
MC		 64 netdev_err(bp->dev, "vf ndo called though PF is down\n");
65 return -EINVAL;
66 }
67 if (!bp->pf.active_vfs) {
68 netdev_err(bp->dev, "vf ndo called though sriov is disabled\n");
69 return -EINVAL;
70 }
71 if (vf_id >= bp->pf.max_vfs) {
72 netdev_err(bp->dev, "Invalid VF id %d\n", vf_id);
73 return -EINVAL;
74 }
75 return 0;
76}
77
78int bnxt_set_vf_spoofchk(struct net_device *dev, int vf_id, bool setting)
79{
80 struct hwrm_func_cfg_input req = {0};
81 struct bnxt *bp = netdev_priv(dev);
82 struct bnxt_vf_info *vf;
83 bool old_setting = false;
84 u32 func_flags;
85 int rc;
86
87 rc = bnxt_vf_ndo_prep(bp, vf_id);
88 if (rc)
89 return rc;
90
91 vf = &bp->pf.vf[vf_id];
92 if (vf->flags & BNXT_VF_SPOOFCHK)
93 old_setting = true;
94 if (old_setting == setting)
95 return 0;
96
97 func_flags = vf->func_flags;
98 if (setting)
99 func_flags |= FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK;
100 else
101 func_flags &= ~FUNC_CFG_REQ_FLAGS_SRC_MAC_ADDR_CHECK;
102 /*TODO: if the driver supports VLAN filter on guest VLAN,
103 * the spoof check should also include vlan anti-spoofing
104 */
105 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
c193554e 106 req.fid = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 107 req.flags = cpu_to_le32(func_flags);
108 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
109 if (!rc) {
110 vf->func_flags = func_flags;
111 if (setting)
112 vf->flags |= BNXT_VF_SPOOFCHK;
113 else
114 vf->flags &= ~BNXT_VF_SPOOFCHK;
115 }
116 return rc;
117}
118
119int bnxt_get_vf_config(struct net_device *dev, int vf_id,
120 struct ifla_vf_info *ivi)
121{
122 struct bnxt *bp = netdev_priv(dev);
123 struct bnxt_vf_info *vf;
124 int rc;
125
126 rc = bnxt_vf_ndo_prep(bp, vf_id);
127 if (rc)
128 return rc;
129
130 ivi->vf = vf_id;
131 vf = &bp->pf.vf[vf_id];
132
133 memcpy(&ivi->mac, vf->mac_addr, ETH_ALEN);
134 ivi->max_tx_rate = vf->max_tx_rate;
135 ivi->min_tx_rate = vf->min_tx_rate;
136 ivi->vlan = vf->vlan;
137 ivi->qos = vf->flags & BNXT_VF_QOS;
138 ivi->spoofchk = vf->flags & BNXT_VF_SPOOFCHK;
139 if (!(vf->flags & BNXT_VF_LINK_FORCED))
140 ivi->linkstate = IFLA_VF_LINK_STATE_AUTO;
141 else if (vf->flags & BNXT_VF_LINK_UP)
142 ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE;
143 else
144 ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE;
145
146 return 0;
147}
148
149int bnxt_set_vf_mac(struct net_device *dev, int vf_id, u8 *mac)
150{
151 struct hwrm_func_cfg_input req = {0};
152 struct bnxt *bp = netdev_priv(dev);
153 struct bnxt_vf_info *vf;
154 int rc;
155
156 rc = bnxt_vf_ndo_prep(bp, vf_id);
157 if (rc)
158 return rc;
159 /* reject bc or mc mac addr, zero mac addr means allow
160 * VF to use its own mac addr
161 */
162 if (is_multicast_ether_addr(mac)) {
163 netdev_err(dev, "Invalid VF ethernet address\n");
164 return -EINVAL;
165 }
166 vf = &bp->pf.vf[vf_id];
167
168 memcpy(vf->mac_addr, mac, ETH_ALEN);
169 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
c193554e 170 req.fid = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 171 req.flags = cpu_to_le32(vf->func_flags);
172 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
173 memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
174 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
175}
176
79aab093
MS		 177int bnxt_set_vf_vlan(struct net_device *dev, int vf_id, u16 vlan_id, u8 qos,
178 __be16 vlan_proto)
c0c050c5
MC		 179{
180 struct hwrm_func_cfg_input req = {0};
181 struct bnxt *bp = netdev_priv(dev);
182 struct bnxt_vf_info *vf;
183 u16 vlan_tag;
184 int rc;
185
cf6645f8
MC		 186 if (bp->hwrm_spec_code < 0x10201)
187 return -ENOTSUPP;
188
79aab093
MS		 189 if (vlan_proto != htons(ETH_P_8021Q))
190 return -EPROTONOSUPPORT;
191
c0c050c5
MC		 192 rc = bnxt_vf_ndo_prep(bp, vf_id);
193 if (rc)
194 return rc;
195
196 /* TODO: needed to implement proper handling of user priority,
197 * currently fail the command if there is valid priority
198 */
199 if (vlan_id > 4095 || qos)
200 return -EINVAL;
201
202 vf = &bp->pf.vf[vf_id];
203 vlan_tag = vlan_id;
204 if (vlan_tag == vf->vlan)
205 return 0;
206
207 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
c193554e 208 req.fid = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 209 req.flags = cpu_to_le32(vf->func_flags);
210 req.dflt_vlan = cpu_to_le16(vlan_tag);
211 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_DFLT_VLAN);
212 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
213 if (!rc)
214 vf->vlan = vlan_tag;
215 return rc;
216}
217
218int bnxt_set_vf_bw(struct net_device *dev, int vf_id, int min_tx_rate,
219 int max_tx_rate)
220{
221 struct hwrm_func_cfg_input req = {0};
222 struct bnxt *bp = netdev_priv(dev);
223 struct bnxt_vf_info *vf;
224 u32 pf_link_speed;
225 int rc;
226
227 rc = bnxt_vf_ndo_prep(bp, vf_id);
228 if (rc)
229 return rc;
230
231 vf = &bp->pf.vf[vf_id];
232 pf_link_speed = bnxt_fw_to_ethtool_speed(bp->link_info.link_speed);
233 if (max_tx_rate > pf_link_speed) {
234 netdev_info(bp->dev, "max tx rate %d exceed PF link speed for VF %d\n",
235 max_tx_rate, vf_id);
236 return -EINVAL;
237 }
238
239 if (min_tx_rate > pf_link_speed || min_tx_rate > max_tx_rate) {
240 netdev_info(bp->dev, "min tx rate %d is invalid for VF %d\n",
241 min_tx_rate, vf_id);
242 return -EINVAL;
243 }
244 if (min_tx_rate == vf->min_tx_rate && max_tx_rate == vf->max_tx_rate)
245 return 0;
246 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
c193554e 247 req.fid = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 248 req.flags = cpu_to_le32(vf->func_flags);
249 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MAX_BW);
250 req.max_bw = cpu_to_le32(max_tx_rate);
251 req.enables |= cpu_to_le32(FUNC_CFG_REQ_ENABLES_MIN_BW);
252 req.min_bw = cpu_to_le32(min_tx_rate);
253 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
254 if (!rc) {
255 vf->min_tx_rate = min_tx_rate;
256 vf->max_tx_rate = max_tx_rate;
257 }
258 return rc;
259}
260
261int bnxt_set_vf_link_state(struct net_device *dev, int vf_id, int link)
262{
263 struct bnxt *bp = netdev_priv(dev);
264 struct bnxt_vf_info *vf;
265 int rc;
266
267 rc = bnxt_vf_ndo_prep(bp, vf_id);
268 if (rc)
269 return rc;
270
271 vf = &bp->pf.vf[vf_id];
272
273 vf->flags &= ~(BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED);
274 switch (link) {
275 case IFLA_VF_LINK_STATE_AUTO:
276 vf->flags |= BNXT_VF_LINK_UP;
277 break;
278 case IFLA_VF_LINK_STATE_DISABLE:
279 vf->flags |= BNXT_VF_LINK_FORCED;
280 break;
281 case IFLA_VF_LINK_STATE_ENABLE:
282 vf->flags |= BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED;
283 break;
284 default:
285 netdev_err(bp->dev, "Invalid link option\n");
286 rc = -EINVAL;
287 break;
288 }
350a7149
EW		 289 if (vf->flags & (BNXT_VF_LINK_UP | BNXT_VF_LINK_FORCED))
290 rc = bnxt_hwrm_fwd_async_event_cmpl(bp, vf,
291 HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE);
c0c050c5
MC		 292 return rc;
293}
294
295static int bnxt_set_vf_attr(struct bnxt *bp, int num_vfs)
296{
297 int i;
298 struct bnxt_vf_info *vf;
299
300 for (i = 0; i < num_vfs; i++) {
301 vf = &bp->pf.vf[i];
302 memset(vf, 0, sizeof(*vf));
303 vf->flags = BNXT_VF_QOS | BNXT_VF_LINK_UP;
304 }
305 return 0;
306}
307
4bb6cdce 308static int bnxt_hwrm_func_vf_resource_free(struct bnxt *bp, int num_vfs)
c0c050c5
MC		 309{
310 int i, rc = 0;
311 struct bnxt_pf_info *pf = &bp->pf;
312 struct hwrm_func_vf_resc_free_input req = {0};
313
314 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_RESC_FREE, -1, -1);
315
316 mutex_lock(&bp->hwrm_cmd_lock);
4bb6cdce 317 for (i = pf->first_vf_id; i < pf->first_vf_id + num_vfs; i++) {
c0c050c5
MC		 318 req.vf_id = cpu_to_le16(i);
319 rc = _hwrm_send_message(bp, &req, sizeof(req),
320 HWRM_CMD_TIMEOUT);
321 if (rc)
322 break;
323 }
324 mutex_unlock(&bp->hwrm_cmd_lock);
325 return rc;
326}
327
328static void bnxt_free_vf_resources(struct bnxt *bp)
329{
330 struct pci_dev *pdev = bp->pdev;
331 int i;
332
333 kfree(bp->pf.vf_event_bmap);
334 bp->pf.vf_event_bmap = NULL;
335
336 for (i = 0; i < 4; i++) {
337 if (bp->pf.hwrm_cmd_req_addr[i]) {
338 dma_free_coherent(&pdev->dev, BNXT_PAGE_SIZE,
339 bp->pf.hwrm_cmd_req_addr[i],
340 bp->pf.hwrm_cmd_req_dma_addr[i]);
341 bp->pf.hwrm_cmd_req_addr[i] = NULL;
342 }
343 }
344
345 kfree(bp->pf.vf);
346 bp->pf.vf = NULL;
347}
348
349static int bnxt_alloc_vf_resources(struct bnxt *bp, int num_vfs)
350{
351 struct pci_dev *pdev = bp->pdev;
352 u32 nr_pages, size, i, j, k = 0;
353
354 bp->pf.vf = kcalloc(num_vfs, sizeof(struct bnxt_vf_info), GFP_KERNEL);
355 if (!bp->pf.vf)
356 return -ENOMEM;
357
358 bnxt_set_vf_attr(bp, num_vfs);
359
360 size = num_vfs * BNXT_HWRM_REQ_MAX_SIZE;
361 nr_pages = size / BNXT_PAGE_SIZE;
362 if (size & (BNXT_PAGE_SIZE - 1))
363 nr_pages++;
364
365 for (i = 0; i < nr_pages; i++) {
366 bp->pf.hwrm_cmd_req_addr[i] =
367 dma_alloc_coherent(&pdev->dev, BNXT_PAGE_SIZE,
368 &bp->pf.hwrm_cmd_req_dma_addr[i],
369 GFP_KERNEL);
370
371 if (!bp->pf.hwrm_cmd_req_addr[i])
372 return -ENOMEM;
373
374 for (j = 0; j < BNXT_HWRM_REQS_PER_PAGE && k < num_vfs; j++) {
375 struct bnxt_vf_info *vf = &bp->pf.vf[k];
376
377 vf->hwrm_cmd_req_addr = bp->pf.hwrm_cmd_req_addr[i] +
378 j * BNXT_HWRM_REQ_MAX_SIZE;
379 vf->hwrm_cmd_req_dma_addr =
380 bp->pf.hwrm_cmd_req_dma_addr[i] + j *
381 BNXT_HWRM_REQ_MAX_SIZE;
382 k++;
383 }
384 }
385
386 /* Max 128 VF's */
387 bp->pf.vf_event_bmap = kzalloc(16, GFP_KERNEL);
388 if (!bp->pf.vf_event_bmap)
389 return -ENOMEM;
390
391 bp->pf.hwrm_cmd_req_pages = nr_pages;
392 return 0;
393}
394
395static int bnxt_hwrm_func_buf_rgtr(struct bnxt *bp)
396{
397 struct hwrm_func_buf_rgtr_input req = {0};
398
399 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_BUF_RGTR, -1, -1);
400
401 req.req_buf_num_pages = cpu_to_le16(bp->pf.hwrm_cmd_req_pages);
402 req.req_buf_page_size = cpu_to_le16(BNXT_PAGE_SHIFT);
403 req.req_buf_len = cpu_to_le16(BNXT_HWRM_REQ_MAX_SIZE);
404 req.req_buf_page_addr0 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[0]);
405 req.req_buf_page_addr1 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[1]);
406 req.req_buf_page_addr2 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[2]);
407 req.req_buf_page_addr3 = cpu_to_le64(bp->pf.hwrm_cmd_req_dma_addr[3]);
408
409 return hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
410}
411
412/* only call by PF to reserve resources for VF */
92268c32 413static int bnxt_hwrm_func_cfg(struct bnxt *bp, int num_vfs)
c0c050c5
MC		 414{
415 u32 rc = 0, mtu, i;
416 u16 vf_tx_rings, vf_rx_rings, vf_cp_rings, vf_stat_ctx, vf_vnics;
b72d4a68 417 u16 vf_ring_grps;
c0c050c5
MC		 418 struct hwrm_func_cfg_input req = {0};
419 struct bnxt_pf_info *pf = &bp->pf;
420
421 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_CFG, -1, -1);
422
423 /* Remaining rings are distributed equally amongs VF's for now */
424 /* TODO: the following workaroud is needed to restrict total number
425 * of vf_cp_rings not exceed number of HW ring groups. This WA should
426 * be removed once new HWRM provides HW ring groups capability in
427 * hwrm_func_qcap.
428 */
92268c32
MC		 429 vf_cp_rings = min_t(u16, pf->max_cp_rings, pf->max_stat_ctxs);
430 vf_cp_rings = (vf_cp_rings - bp->cp_nr_rings) / num_vfs;
c0c050c5 431 /* TODO: restore this logic below once the WA above is removed */
92268c32
MC		 432 /* vf_cp_rings = (pf->max_cp_rings - bp->cp_nr_rings) / num_vfs; */
433 vf_stat_ctx = (pf->max_stat_ctxs - bp->num_stat_ctxs) / num_vfs;
c0c050c5 434 if (bp->flags & BNXT_FLAG_AGG_RINGS)
92268c32
MC		 435 vf_rx_rings = (pf->max_rx_rings - bp->rx_nr_rings * 2) /
436 num_vfs;
c0c050c5 437 else
92268c32 438 vf_rx_rings = (pf->max_rx_rings - bp->rx_nr_rings) / num_vfs;
b72d4a68 439 vf_ring_grps = (bp->pf.max_hw_ring_grps - bp->rx_nr_rings) / num_vfs;
92268c32 440 vf_tx_rings = (pf->max_tx_rings - bp->tx_nr_rings) / num_vfs;
c0c050c5
MC		 441
442 req.enables = cpu_to_le32(FUNC_CFG_REQ_ENABLES_MTU |
443 FUNC_CFG_REQ_ENABLES_MRU |
444 FUNC_CFG_REQ_ENABLES_NUM_RSSCOS_CTXS |
445 FUNC_CFG_REQ_ENABLES_NUM_STAT_CTXS |
446 FUNC_CFG_REQ_ENABLES_NUM_CMPL_RINGS |
447 FUNC_CFG_REQ_ENABLES_NUM_TX_RINGS |
448 FUNC_CFG_REQ_ENABLES_NUM_RX_RINGS |
449 FUNC_CFG_REQ_ENABLES_NUM_L2_CTXS |
b72d4a68
MC		 450 FUNC_CFG_REQ_ENABLES_NUM_VNICS |
451 FUNC_CFG_REQ_ENABLES_NUM_HW_RING_GRPS);
c0c050c5
MC		 452
453 mtu = bp->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
454 req.mru = cpu_to_le16(mtu);
455 req.mtu = cpu_to_le16(mtu);
456
457 req.num_rsscos_ctxs = cpu_to_le16(1);
458 req.num_cmpl_rings = cpu_to_le16(vf_cp_rings);
459 req.num_tx_rings = cpu_to_le16(vf_tx_rings);
460 req.num_rx_rings = cpu_to_le16(vf_rx_rings);
b72d4a68 461 req.num_hw_ring_grps = cpu_to_le16(vf_ring_grps);
c0c050c5
MC		 462 req.num_l2_ctxs = cpu_to_le16(4);
463 vf_vnics = 1;
464
465 req.num_vnics = cpu_to_le16(vf_vnics);
466 /* FIXME spec currently uses 1 bit for stats ctx */
467 req.num_stat_ctxs = cpu_to_le16(vf_stat_ctx);
468
469 mutex_lock(&bp->hwrm_cmd_lock);
92268c32 470 for (i = 0; i < num_vfs; i++) {
c193554e 471 req.fid = cpu_to_le16(pf->first_vf_id + i);
c0c050c5
MC		 472 rc = _hwrm_send_message(bp, &req, sizeof(req),
473 HWRM_CMD_TIMEOUT);
474 if (rc)
475 break;
92268c32 476 pf->active_vfs = i + 1;
c193554e 477 pf->vf[i].fw_fid = le16_to_cpu(req.fid);
c0c050c5
MC		 478 }
479 mutex_unlock(&bp->hwrm_cmd_lock);
480 if (!rc) {
4a21b49b
MC		 481 pf->max_tx_rings -= vf_tx_rings * num_vfs;
482 pf->max_rx_rings -= vf_rx_rings * num_vfs;
b72d4a68 483 pf->max_hw_ring_grps -= vf_ring_grps * num_vfs;
4a21b49b
MC		 484 pf->max_cp_rings -= vf_cp_rings * num_vfs;
485 pf->max_rsscos_ctxs -= num_vfs;
486 pf->max_stat_ctxs -= vf_stat_ctx * num_vfs;
487 pf->max_vnics -= vf_vnics * num_vfs;
c0c050c5
MC		 488 }
489 return rc;
490}
491
492static int bnxt_sriov_enable(struct bnxt *bp, int *num_vfs)
493{
494 int rc = 0, vfs_supported;
495 int min_rx_rings, min_tx_rings, min_rss_ctxs;
496 int tx_ok = 0, rx_ok = 0, rss_ok = 0;
497
498 /* Check if we can enable requested num of vf's. At a mininum
499 * we require 1 RX 1 TX rings for each VF. In this minimum conf
500 * features like TPA will not be available.
501 */
502 vfs_supported = *num_vfs;
503
504 while (vfs_supported) {
505 min_rx_rings = vfs_supported;
506 min_tx_rings = vfs_supported;
507 min_rss_ctxs = vfs_supported;
508
509 if (bp->flags & BNXT_FLAG_AGG_RINGS) {
510 if (bp->pf.max_rx_rings - bp->rx_nr_rings * 2 >=
511 min_rx_rings)
512 rx_ok = 1;
513 } else {
514 if (bp->pf.max_rx_rings - bp->rx_nr_rings >=
515 min_rx_rings)
516 rx_ok = 1;
517 }
518
519 if (bp->pf.max_tx_rings - bp->tx_nr_rings >= min_tx_rings)
520 tx_ok = 1;
521
522 if (bp->pf.max_rsscos_ctxs - bp->rsscos_nr_ctxs >= min_rss_ctxs)
523 rss_ok = 1;
524
525 if (tx_ok && rx_ok && rss_ok)
526 break;
527
528 vfs_supported--;
529 }
530
531 if (!vfs_supported) {
532 netdev_err(bp->dev, "Cannot enable VF's as all resources are used by PF\n");
533 return -EINVAL;
534 }
535
536 if (vfs_supported != *num_vfs) {
537 netdev_info(bp->dev, "Requested VFs %d, can enable %d\n",
538 *num_vfs, vfs_supported);
539 *num_vfs = vfs_supported;
540 }
541
542 rc = bnxt_alloc_vf_resources(bp, *num_vfs);
543 if (rc)
544 goto err_out1;
545
546 /* Reserve resources for VFs */
92268c32 547 rc = bnxt_hwrm_func_cfg(bp, *num_vfs);
c0c050c5
MC		 548 if (rc)
549 goto err_out2;
550
551 /* Register buffers for VFs */
552 rc = bnxt_hwrm_func_buf_rgtr(bp);
553 if (rc)
554 goto err_out2;
555
556 rc = pci_enable_sriov(bp->pdev, *num_vfs);
557 if (rc)
558 goto err_out2;
559
560 return 0;
561
562err_out2:
563 /* Free the resources reserved for various VF's */
4bb6cdce 564 bnxt_hwrm_func_vf_resource_free(bp, *num_vfs);
c0c050c5
MC		 565
566err_out1:
567 bnxt_free_vf_resources(bp);
568
569 return rc;
570}
571
572void bnxt_sriov_disable(struct bnxt *bp)
573{
4bb6cdce 574 u16 num_vfs = pci_num_vf(bp->pdev);
c0c050c5 575
4bb6cdce
JH		 576 if (!num_vfs)
577 return;
c0c050c5 578
4bb6cdce 579 if (pci_vfs_assigned(bp->pdev)) {
19241368
JH		 580 bnxt_hwrm_fwd_async_event_cmpl(
581 bp, NULL,
582 HWRM_ASYNC_EVENT_CMPL_EVENT_ID_PF_DRVR_UNLOAD);
4bb6cdce
JH		 583 netdev_warn(bp->dev, "Unable to free %d VFs because some are assigned to VMs.\n",
584 num_vfs);
585 } else {
586 pci_disable_sriov(bp->pdev);
587 /* Free the HW resources reserved for various VF's */
588 bnxt_hwrm_func_vf_resource_free(bp, num_vfs);
589 }
c0c050c5
MC		 590
591 bnxt_free_vf_resources(bp);
592
593 bp->pf.active_vfs = 0;
4a21b49b
MC		 594 /* Reclaim all resources for the PF. */
595 bnxt_hwrm_func_qcaps(bp);
c0c050c5
MC		 596}
597
598int bnxt_sriov_configure(struct pci_dev *pdev, int num_vfs)
599{
600 struct net_device *dev = pci_get_drvdata(pdev);
601 struct bnxt *bp = netdev_priv(dev);
602
603 if (!(bp->flags & BNXT_FLAG_USING_MSIX)) {
604 netdev_warn(dev, "Not allow SRIOV if the irq mode is not MSIX\n");
605 return 0;
606 }
607
608 rtnl_lock();
609 if (!netif_running(dev)) {
610 netdev_warn(dev, "Reject SRIOV config request since if is down!\n");
611 rtnl_unlock();
612 return 0;
613 }
614 bp->sriov_cfg = true;
615 rtnl_unlock();
4bb6cdce
JH		 616
617 if (pci_vfs_assigned(bp->pdev)) {
618 netdev_warn(dev, "Unable to configure SRIOV since some VFs are assigned to VMs.\n");
619 num_vfs = 0;
620 goto sriov_cfg_exit;
c0c050c5
MC		 621 }
622
623 /* Check if enabled VFs is same as requested */
4bb6cdce
JH		 624 if (num_vfs && num_vfs == bp->pf.active_vfs)
625 goto sriov_cfg_exit;
626
627 /* if there are previous existing VFs, clean them up */
628 bnxt_sriov_disable(bp);
629 if (!num_vfs)
630 goto sriov_cfg_exit;
c0c050c5
MC		 631
632 bnxt_sriov_enable(bp, &num_vfs);
633
4bb6cdce 634sriov_cfg_exit:
c0c050c5
MC		 635 bp->sriov_cfg = false;
636 wake_up(&bp->sriov_cfg_wait);
637
638 return num_vfs;
639}
640
641static int bnxt_hwrm_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
642 void *encap_resp, __le64 encap_resp_addr,
643 __le16 encap_resp_cpr, u32 msg_size)
644{
645 int rc = 0;
646 struct hwrm_fwd_resp_input req = {0};
647 struct hwrm_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
648
649 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FWD_RESP, -1, -1);
650
651 /* Set the new target id */
652 req.target_id = cpu_to_le16(vf->fw_fid);
c193554e 653 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 654 req.encap_resp_len = cpu_to_le16(msg_size);
655 req.encap_resp_addr = encap_resp_addr;
656 req.encap_resp_cmpl_ring = encap_resp_cpr;
657 memcpy(req.encap_resp, encap_resp, msg_size);
658
659 mutex_lock(&bp->hwrm_cmd_lock);
660 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
661
662 if (rc) {
663 netdev_err(bp->dev, "hwrm_fwd_resp failed. rc:%d\n", rc);
664 goto fwd_resp_exit;
665 }
666
667 if (resp->error_code) {
668 netdev_err(bp->dev, "hwrm_fwd_resp error %d\n",
669 resp->error_code);
670 rc = -1;
671 }
672
673fwd_resp_exit:
674 mutex_unlock(&bp->hwrm_cmd_lock);
675 return rc;
676}
677
678static int bnxt_hwrm_fwd_err_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
679 u32 msg_size)
680{
681 int rc = 0;
682 struct hwrm_reject_fwd_resp_input req = {0};
683 struct hwrm_reject_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
684
685 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_REJECT_FWD_RESP, -1, -1);
686 /* Set the new target id */
687 req.target_id = cpu_to_le16(vf->fw_fid);
c193554e 688 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 689 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
690
691 mutex_lock(&bp->hwrm_cmd_lock);
692 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
693
694 if (rc) {
695 netdev_err(bp->dev, "hwrm_fwd_err_resp failed. rc:%d\n", rc);
696 goto fwd_err_resp_exit;
697 }
698
699 if (resp->error_code) {
700 netdev_err(bp->dev, "hwrm_fwd_err_resp error %d\n",
701 resp->error_code);
702 rc = -1;
703 }
704
705fwd_err_resp_exit:
706 mutex_unlock(&bp->hwrm_cmd_lock);
707 return rc;
708}
709
710static int bnxt_hwrm_exec_fwd_resp(struct bnxt *bp, struct bnxt_vf_info *vf,
711 u32 msg_size)
712{
713 int rc = 0;
714 struct hwrm_exec_fwd_resp_input req = {0};
715 struct hwrm_exec_fwd_resp_output *resp = bp->hwrm_cmd_resp_addr;
716
717 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_EXEC_FWD_RESP, -1, -1);
718 /* Set the new target id */
719 req.target_id = cpu_to_le16(vf->fw_fid);
c193554e 720 req.encap_resp_target_id = cpu_to_le16(vf->fw_fid);
c0c050c5
MC		 721 memcpy(req.encap_request, vf->hwrm_cmd_req_addr, msg_size);
722
723 mutex_lock(&bp->hwrm_cmd_lock);
724 rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
725
726 if (rc) {
727 netdev_err(bp->dev, "hwrm_exec_fw_resp failed. rc:%d\n", rc);
728 goto exec_fwd_resp_exit;
729 }
730
731 if (resp->error_code) {
732 netdev_err(bp->dev, "hwrm_exec_fw_resp error %d\n",
733 resp->error_code);
734 rc = -1;
735 }
736
737exec_fwd_resp_exit:
738 mutex_unlock(&bp->hwrm_cmd_lock);
739 return rc;
740}
741
742static int bnxt_vf_validate_set_mac(struct bnxt *bp, struct bnxt_vf_info *vf)
743{
744 u32 msg_size = sizeof(struct hwrm_cfa_l2_filter_alloc_input);
745 struct hwrm_cfa_l2_filter_alloc_input *req =
746 (struct hwrm_cfa_l2_filter_alloc_input *)vf->hwrm_cmd_req_addr;
747
748 if (!is_valid_ether_addr(vf->mac_addr) ||
749 ether_addr_equal((const u8 *)req->l2_addr, vf->mac_addr))
750 return bnxt_hwrm_exec_fwd_resp(bp, vf, msg_size);
751 else
752 return bnxt_hwrm_fwd_err_resp(bp, vf, msg_size);
753}
754
755static int bnxt_vf_set_link(struct bnxt *bp, struct bnxt_vf_info *vf)
756{
757 int rc = 0;
758
759 if (!(vf->flags & BNXT_VF_LINK_FORCED)) {
760 /* real link */
761 rc = bnxt_hwrm_exec_fwd_resp(
762 bp, vf, sizeof(struct hwrm_port_phy_qcfg_input));
763 } else {
764 struct hwrm_port_phy_qcfg_output phy_qcfg_resp;
765 struct hwrm_port_phy_qcfg_input *phy_qcfg_req;
766
767 phy_qcfg_req =
768 (struct hwrm_port_phy_qcfg_input *)vf->hwrm_cmd_req_addr;
769 mutex_lock(&bp->hwrm_cmd_lock);
770 memcpy(&phy_qcfg_resp, &bp->link_info.phy_qcfg_resp,
771 sizeof(phy_qcfg_resp));
772 mutex_unlock(&bp->hwrm_cmd_lock);
773 phy_qcfg_resp.seq_id = phy_qcfg_req->seq_id;
774
775 if (vf->flags & BNXT_VF_LINK_UP) {
776 /* if physical link is down, force link up on VF */
73b9bad6
MC		 777 if (phy_qcfg_resp.link !=
778 PORT_PHY_QCFG_RESP_LINK_LINK) {
c0c050c5
MC		 779 phy_qcfg_resp.link =
780 PORT_PHY_QCFG_RESP_LINK_LINK;
11f15ed3
MC		 781 phy_qcfg_resp.link_speed = cpu_to_le16(
782 PORT_PHY_QCFG_RESP_LINK_SPEED_10GB);
c0c050c5
MC		 783 phy_qcfg_resp.duplex =
784 PORT_PHY_QCFG_RESP_DUPLEX_FULL;
785 phy_qcfg_resp.pause =
786 (PORT_PHY_QCFG_RESP_PAUSE_TX |
787 PORT_PHY_QCFG_RESP_PAUSE_RX);
788 }
789 } else {
790 /* force link down */
791 phy_qcfg_resp.link = PORT_PHY_QCFG_RESP_LINK_NO_LINK;
792 phy_qcfg_resp.link_speed = 0;
793 phy_qcfg_resp.duplex = PORT_PHY_QCFG_RESP_DUPLEX_HALF;
794 phy_qcfg_resp.pause = 0;
795 }
796 rc = bnxt_hwrm_fwd_resp(bp, vf, &phy_qcfg_resp,
797 phy_qcfg_req->resp_addr,
798 phy_qcfg_req->cmpl_ring,
799 sizeof(phy_qcfg_resp));
800 }
801 return rc;
802}
803
804static int bnxt_vf_req_validate_snd(struct bnxt *bp, struct bnxt_vf_info *vf)
805{
806 int rc = 0;
a8643e16
MC		 807 struct input *encap_req = vf->hwrm_cmd_req_addr;
808 u32 req_type = le16_to_cpu(encap_req->req_type);
c0c050c5
MC		 809
810 switch (req_type) {
811 case HWRM_CFA_L2_FILTER_ALLOC:
812 rc = bnxt_vf_validate_set_mac(bp, vf);
813 break;
814 case HWRM_FUNC_CFG:
815 /* TODO Validate if VF is allowed to change mac address,
816 * mtu, num of rings etc
817 */
818 rc = bnxt_hwrm_exec_fwd_resp(
819 bp, vf, sizeof(struct hwrm_func_cfg_input));
820 break;
821 case HWRM_PORT_PHY_QCFG:
822 rc = bnxt_vf_set_link(bp, vf);
823 break;
824 default:
825 break;
826 }
827 return rc;
828}
829
830void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
831{
832 u32 i = 0, active_vfs = bp->pf.active_vfs, vf_id;
833
834 /* Scan through VF's and process commands */
835 while (1) {
836 vf_id = find_next_bit(bp->pf.vf_event_bmap, active_vfs, i);
837 if (vf_id >= active_vfs)
838 break;
839
840 clear_bit(vf_id, bp->pf.vf_event_bmap);
841 bnxt_vf_req_validate_snd(bp, &bp->pf.vf[vf_id]);
842 i = vf_id + 1;
843 }
844}
379a80a1
MC		 845
846void bnxt_update_vf_mac(struct bnxt *bp)
847{
848 struct hwrm_func_qcaps_input req = {0};
849 struct hwrm_func_qcaps_output *resp = bp->hwrm_cmd_resp_addr;
850
851 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_QCAPS, -1, -1);
852 req.fid = cpu_to_le16(0xffff);
853
854 mutex_lock(&bp->hwrm_cmd_lock);
855 if (_hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT))
856 goto update_vf_mac_exit;
857
3874d6a8
JH		 858 /* Store MAC address from the firmware. There are 2 cases:
859 * 1. MAC address is valid. It is assigned from the PF and we
860 * need to override the current VF MAC address with it.
861 * 2. MAC address is zero. The VF will use a random MAC address by
862 * default but the stored zero MAC will allow the VF user to change
863 * the random MAC address using ndo_set_mac_address() if he wants.
864 */
11f15ed3
MC		 865 if (!ether_addr_equal(resp->mac_address, bp->vf.mac_addr))
866 memcpy(bp->vf.mac_addr, resp->mac_address, ETH_ALEN);
3874d6a8
JH		 867
868 /* overwrite netdev dev_addr with admin VF MAC */
869 if (is_valid_ether_addr(bp->vf.mac_addr))
870 memcpy(bp->dev->dev_addr, bp->vf.mac_addr, ETH_ALEN);
379a80a1
MC		 871update_vf_mac_exit:
872 mutex_unlock(&bp->hwrm_cmd_lock);
873}
874
84c33dd3
MC		 875int bnxt_approve_mac(struct bnxt *bp, u8 *mac)
876{
877 struct hwrm_func_vf_cfg_input req = {0};
878 int rc = 0;
879
880 if (!BNXT_VF(bp))
881 return 0;
882
883 if (bp->hwrm_spec_code < 0x10202) {
884 if (is_valid_ether_addr(bp->vf.mac_addr))
885 rc = -EADDRNOTAVAIL;
886 goto mac_done;
887 }
888 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_FUNC_VF_CFG, -1, -1);
889 req.enables = cpu_to_le32(FUNC_VF_CFG_REQ_ENABLES_DFLT_MAC_ADDR);
890 memcpy(req.dflt_mac_addr, mac, ETH_ALEN);
891 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
892mac_done:
893 if (rc) {
894 rc = -EADDRNOTAVAIL;
895 netdev_warn(bp->dev, "VF MAC address %pM not approved by the PF\n",
896 mac);
897 }
898 return rc;
899}
c0c050c5
MC		 900#else
901
902void bnxt_sriov_disable(struct bnxt *bp)
903{
904}
905
906void bnxt_hwrm_exec_fwd_req(struct bnxt *bp)
907{
379a80a1
MC		 908 netdev_err(bp->dev, "Invalid VF message received when SRIOV is not enable\n");
909}
910
911void bnxt_update_vf_mac(struct bnxt *bp)
912{
c0c050c5 913}
84c33dd3
MC		 914
915int bnxt_approve_mac(struct bnxt *bp, u8 *mac)
916{
917 return 0;
918}
c0c050c5 919#endif
Linux 6.x block layer and io_uring tree(s)