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1 // SPDX-License-Identifier: GPL-2.0
2 /* Marvell RVU Ethernet driver
3  *
4  * Copyright (C) 2020 Marvell.
5  *
6  */
7 
8 #include <linux/pci.h>
9 #include <linux/ethtool.h>
10 #include <linux/stddef.h>
11 #include <linux/etherdevice.h>
12 #include <linux/log2.h>
13 #include <linux/net_tstamp.h>
14 #include <linux/linkmode.h>
15 
16 #include "otx2_common.h"
17 #include "otx2_ptp.h"
18 
19 #define DRV_NAME	"rvu-nicpf"
20 #define DRV_VF_NAME	"rvu-nicvf"
21 
22 struct otx2_stat {
23 	char name[ETH_GSTRING_LEN];
24 	unsigned int index;
25 };
26 
27 /* HW device stats */
28 #define OTX2_DEV_STAT(stat) { \
29 	.name = #stat, \
30 	.index = offsetof(struct otx2_dev_stats, stat) / sizeof(u64), \
31 }
32 
33 enum link_mode {
34 	OTX2_MODE_SUPPORTED,
35 	OTX2_MODE_ADVERTISED
36 };
37 
38 static const struct otx2_stat otx2_dev_stats[] = {
39 	OTX2_DEV_STAT(rx_ucast_frames),
40 	OTX2_DEV_STAT(rx_bcast_frames),
41 	OTX2_DEV_STAT(rx_mcast_frames),
42 
43 	OTX2_DEV_STAT(tx_ucast_frames),
44 	OTX2_DEV_STAT(tx_bcast_frames),
45 	OTX2_DEV_STAT(tx_mcast_frames),
46 };
47 
48 /* Driver level stats */
49 #define OTX2_DRV_STAT(stat) { \
50 	.name = #stat, \
51 	.index = offsetof(struct otx2_drv_stats, stat) / sizeof(atomic_t), \
52 }
53 
54 static const struct otx2_stat otx2_drv_stats[] = {
55 	OTX2_DRV_STAT(rx_fcs_errs),
56 	OTX2_DRV_STAT(rx_oversize_errs),
57 	OTX2_DRV_STAT(rx_undersize_errs),
58 	OTX2_DRV_STAT(rx_csum_errs),
59 	OTX2_DRV_STAT(rx_len_errs),
60 	OTX2_DRV_STAT(rx_other_errs),
61 };
62 
63 static const struct otx2_stat otx2_queue_stats[] = {
64 	{ "bytes", 0 },
65 	{ "frames", 1 },
66 };
67 
68 static const unsigned int otx2_n_dev_stats = ARRAY_SIZE(otx2_dev_stats);
69 static const unsigned int otx2_n_drv_stats = ARRAY_SIZE(otx2_drv_stats);
70 static const unsigned int otx2_n_queue_stats = ARRAY_SIZE(otx2_queue_stats);
71 
72 static struct cgx_fw_data *otx2_get_fwdata(struct otx2_nic *pfvf);
73 
otx2_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * info)74 static void otx2_get_drvinfo(struct net_device *netdev,
75 			     struct ethtool_drvinfo *info)
76 {
77 	struct otx2_nic *pfvf = netdev_priv(netdev);
78 
79 	strscpy(info->driver, DRV_NAME, sizeof(info->driver));
80 	strscpy(info->bus_info, pci_name(pfvf->pdev), sizeof(info->bus_info));
81 }
82 
otx2_get_qset_strings(struct otx2_nic * pfvf,u8 ** data,int qset)83 static void otx2_get_qset_strings(struct otx2_nic *pfvf, u8 **data, int qset)
84 {
85 	int start_qidx = qset * pfvf->hw.rx_queues;
86 	int qidx, stats;
87 
88 	for (qidx = 0; qidx < pfvf->hw.rx_queues; qidx++) {
89 		for (stats = 0; stats < otx2_n_queue_stats; stats++) {
90 			sprintf(*data, "rxq%d: %s", qidx + start_qidx,
91 				otx2_queue_stats[stats].name);
92 			*data += ETH_GSTRING_LEN;
93 		}
94 	}
95 
96 	for (qidx = 0; qidx < otx2_get_total_tx_queues(pfvf); qidx++) {
97 		for (stats = 0; stats < otx2_n_queue_stats; stats++) {
98 			if (qidx >= pfvf->hw.non_qos_queues)
99 				sprintf(*data, "txq_qos%d: %s",
100 					qidx + start_qidx - pfvf->hw.non_qos_queues,
101 					otx2_queue_stats[stats].name);
102 			else
103 				sprintf(*data, "txq%d: %s", qidx + start_qidx,
104 					otx2_queue_stats[stats].name);
105 			*data += ETH_GSTRING_LEN;
106 		}
107 	}
108 }
109 
otx2_get_strings(struct net_device * netdev,u32 sset,u8 * data)110 static void otx2_get_strings(struct net_device *netdev, u32 sset, u8 *data)
111 {
112 	struct otx2_nic *pfvf = netdev_priv(netdev);
113 	int stats;
114 
115 	if (sset != ETH_SS_STATS)
116 		return;
117 
118 	for (stats = 0; stats < otx2_n_dev_stats; stats++) {
119 		memcpy(data, otx2_dev_stats[stats].name, ETH_GSTRING_LEN);
120 		data += ETH_GSTRING_LEN;
121 	}
122 
123 	for (stats = 0; stats < otx2_n_drv_stats; stats++) {
124 		memcpy(data, otx2_drv_stats[stats].name, ETH_GSTRING_LEN);
125 		data += ETH_GSTRING_LEN;
126 	}
127 
128 	otx2_get_qset_strings(pfvf, &data, 0);
129 
130 	if (!test_bit(CN10K_RPM, &pfvf->hw.cap_flag)) {
131 		for (stats = 0; stats < CGX_RX_STATS_COUNT; stats++) {
132 			sprintf(data, "cgx_rxstat%d: ", stats);
133 			data += ETH_GSTRING_LEN;
134 		}
135 
136 		for (stats = 0; stats < CGX_TX_STATS_COUNT; stats++) {
137 			sprintf(data, "cgx_txstat%d: ", stats);
138 			data += ETH_GSTRING_LEN;
139 		}
140 	}
141 
142 	strcpy(data, "reset_count");
143 	data += ETH_GSTRING_LEN;
144 	sprintf(data, "Fec Corrected Errors: ");
145 	data += ETH_GSTRING_LEN;
146 	sprintf(data, "Fec Uncorrected Errors: ");
147 	data += ETH_GSTRING_LEN;
148 }
149 
otx2_get_qset_stats(struct otx2_nic * pfvf,struct ethtool_stats * stats,u64 ** data)150 static void otx2_get_qset_stats(struct otx2_nic *pfvf,
151 				struct ethtool_stats *stats, u64 **data)
152 {
153 	int stat, qidx;
154 
155 	if (!pfvf)
156 		return;
157 	for (qidx = 0; qidx < pfvf->hw.rx_queues; qidx++) {
158 		if (!otx2_update_rq_stats(pfvf, qidx)) {
159 			for (stat = 0; stat < otx2_n_queue_stats; stat++)
160 				*((*data)++) = 0;
161 			continue;
162 		}
163 		for (stat = 0; stat < otx2_n_queue_stats; stat++)
164 			*((*data)++) = ((u64 *)&pfvf->qset.rq[qidx].stats)
165 				[otx2_queue_stats[stat].index];
166 	}
167 
168 	for (qidx = 0; qidx < otx2_get_total_tx_queues(pfvf); qidx++) {
169 		if (!otx2_update_sq_stats(pfvf, qidx)) {
170 			for (stat = 0; stat < otx2_n_queue_stats; stat++)
171 				*((*data)++) = 0;
172 			continue;
173 		}
174 		for (stat = 0; stat < otx2_n_queue_stats; stat++)
175 			*((*data)++) = ((u64 *)&pfvf->qset.sq[qidx].stats)
176 				[otx2_queue_stats[stat].index];
177 	}
178 }
179 
otx2_get_phy_fec_stats(struct otx2_nic * pfvf)180 static int otx2_get_phy_fec_stats(struct otx2_nic *pfvf)
181 {
182 	struct msg_req *req;
183 	int rc = -ENOMEM;
184 
185 	mutex_lock(&pfvf->mbox.lock);
186 	req = otx2_mbox_alloc_msg_cgx_get_phy_fec_stats(&pfvf->mbox);
187 	if (!req)
188 		goto end;
189 
190 	if (!otx2_sync_mbox_msg(&pfvf->mbox))
191 		rc = 0;
192 end:
193 	mutex_unlock(&pfvf->mbox.lock);
194 	return rc;
195 }
196 
197 /* Get device and per queue statistics */
otx2_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)198 static void otx2_get_ethtool_stats(struct net_device *netdev,
199 				   struct ethtool_stats *stats, u64 *data)
200 {
201 	struct otx2_nic *pfvf = netdev_priv(netdev);
202 	u64 fec_corr_blks, fec_uncorr_blks;
203 	struct cgx_fw_data *rsp;
204 	int stat;
205 
206 	otx2_get_dev_stats(pfvf);
207 	for (stat = 0; stat < otx2_n_dev_stats; stat++)
208 		*(data++) = ((u64 *)&pfvf->hw.dev_stats)
209 				[otx2_dev_stats[stat].index];
210 
211 	for (stat = 0; stat < otx2_n_drv_stats; stat++)
212 		*(data++) = atomic_read(&((atomic_t *)&pfvf->hw.drv_stats)
213 						[otx2_drv_stats[stat].index]);
214 
215 	otx2_get_qset_stats(pfvf, stats, &data);
216 
217 	if (!test_bit(CN10K_RPM, &pfvf->hw.cap_flag)) {
218 		otx2_update_lmac_stats(pfvf);
219 		for (stat = 0; stat < CGX_RX_STATS_COUNT; stat++)
220 			*(data++) = pfvf->hw.cgx_rx_stats[stat];
221 		for (stat = 0; stat < CGX_TX_STATS_COUNT; stat++)
222 			*(data++) = pfvf->hw.cgx_tx_stats[stat];
223 	}
224 
225 	*(data++) = pfvf->reset_count;
226 
227 	fec_corr_blks = pfvf->hw.cgx_fec_corr_blks;
228 	fec_uncorr_blks = pfvf->hw.cgx_fec_uncorr_blks;
229 
230 	rsp = otx2_get_fwdata(pfvf);
231 	if (!IS_ERR(rsp) && rsp->fwdata.phy.misc.has_fec_stats &&
232 	    !otx2_get_phy_fec_stats(pfvf)) {
233 		/* Fetch fwdata again because it's been recently populated with
234 		 * latest PHY FEC stats.
235 		 */
236 		rsp = otx2_get_fwdata(pfvf);
237 		if (!IS_ERR(rsp)) {
238 			struct fec_stats_s *p = &rsp->fwdata.phy.fec_stats;
239 
240 			if (pfvf->linfo.fec == OTX2_FEC_BASER) {
241 				fec_corr_blks   = p->brfec_corr_blks;
242 				fec_uncorr_blks = p->brfec_uncorr_blks;
243 			} else {
244 				fec_corr_blks   = p->rsfec_corr_cws;
245 				fec_uncorr_blks = p->rsfec_uncorr_cws;
246 			}
247 		}
248 	}
249 
250 	*(data++) = fec_corr_blks;
251 	*(data++) = fec_uncorr_blks;
252 }
253 
otx2_get_sset_count(struct net_device * netdev,int sset)254 static int otx2_get_sset_count(struct net_device *netdev, int sset)
255 {
256 	struct otx2_nic *pfvf = netdev_priv(netdev);
257 	int qstats_count, mac_stats = 0;
258 
259 	if (sset != ETH_SS_STATS)
260 		return -EINVAL;
261 
262 	qstats_count = otx2_n_queue_stats *
263 		       (pfvf->hw.rx_queues + otx2_get_total_tx_queues(pfvf));
264 	if (!test_bit(CN10K_RPM, &pfvf->hw.cap_flag))
265 		mac_stats = CGX_RX_STATS_COUNT + CGX_TX_STATS_COUNT;
266 	otx2_update_lmac_fec_stats(pfvf);
267 
268 	return otx2_n_dev_stats + otx2_n_drv_stats + qstats_count +
269 	       mac_stats + OTX2_FEC_STATS_CNT + 1;
270 }
271 
272 /* Get no of queues device supports and current queue count */
otx2_get_channels(struct net_device * dev,struct ethtool_channels * channel)273 static void otx2_get_channels(struct net_device *dev,
274 			      struct ethtool_channels *channel)
275 {
276 	struct otx2_nic *pfvf = netdev_priv(dev);
277 
278 	channel->max_rx = pfvf->hw.max_queues;
279 	channel->max_tx = pfvf->hw.max_queues;
280 
281 	channel->rx_count = pfvf->hw.rx_queues;
282 	channel->tx_count = pfvf->hw.tx_queues;
283 }
284 
285 /* Set no of Tx, Rx queues to be used */
otx2_set_channels(struct net_device * dev,struct ethtool_channels * channel)286 static int otx2_set_channels(struct net_device *dev,
287 			     struct ethtool_channels *channel)
288 {
289 	struct otx2_nic *pfvf = netdev_priv(dev);
290 	bool if_up = netif_running(dev);
291 	int err, qos_txqs;
292 
293 	if (!channel->rx_count || !channel->tx_count)
294 		return -EINVAL;
295 
296 	if (bitmap_weight(&pfvf->rq_bmap, pfvf->hw.rx_queues) > 1) {
297 		netdev_err(dev,
298 			   "Receive queues are in use by TC police action\n");
299 		return -EINVAL;
300 	}
301 
302 	if (if_up)
303 		dev->netdev_ops->ndo_stop(dev);
304 
305 	qos_txqs = bitmap_weight(pfvf->qos.qos_sq_bmap,
306 				 OTX2_QOS_MAX_LEAF_NODES);
307 
308 	err = otx2_set_real_num_queues(dev, channel->tx_count + qos_txqs,
309 				       channel->rx_count);
310 	if (err)
311 		return err;
312 
313 	pfvf->hw.rx_queues = channel->rx_count;
314 	pfvf->hw.tx_queues = channel->tx_count;
315 	if (pfvf->xdp_prog)
316 		pfvf->hw.xdp_queues = channel->rx_count;
317 
318 	if (if_up)
319 		err = dev->netdev_ops->ndo_open(dev);
320 
321 	netdev_info(dev, "Setting num Tx rings to %d, Rx rings to %d success\n",
322 		    pfvf->hw.tx_queues, pfvf->hw.rx_queues);
323 
324 	return err;
325 }
326 
otx2_get_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)327 static void otx2_get_pauseparam(struct net_device *netdev,
328 				struct ethtool_pauseparam *pause)
329 {
330 	struct otx2_nic *pfvf = netdev_priv(netdev);
331 	struct cgx_pause_frm_cfg *req, *rsp;
332 
333 	if (is_otx2_lbkvf(pfvf->pdev))
334 		return;
335 
336 	mutex_lock(&pfvf->mbox.lock);
337 	req = otx2_mbox_alloc_msg_cgx_cfg_pause_frm(&pfvf->mbox);
338 	if (!req) {
339 		mutex_unlock(&pfvf->mbox.lock);
340 		return;
341 	}
342 
343 	if (!otx2_sync_mbox_msg(&pfvf->mbox)) {
344 		rsp = (struct cgx_pause_frm_cfg *)
345 		       otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
346 		pause->rx_pause = rsp->rx_pause;
347 		pause->tx_pause = rsp->tx_pause;
348 	}
349 	mutex_unlock(&pfvf->mbox.lock);
350 }
351 
otx2_set_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)352 static int otx2_set_pauseparam(struct net_device *netdev,
353 			       struct ethtool_pauseparam *pause)
354 {
355 	struct otx2_nic *pfvf = netdev_priv(netdev);
356 
357 	if (pause->autoneg)
358 		return -EOPNOTSUPP;
359 
360 	if (is_otx2_lbkvf(pfvf->pdev))
361 		return -EOPNOTSUPP;
362 
363 	if (pause->rx_pause)
364 		pfvf->flags |= OTX2_FLAG_RX_PAUSE_ENABLED;
365 	else
366 		pfvf->flags &= ~OTX2_FLAG_RX_PAUSE_ENABLED;
367 
368 	if (pause->tx_pause)
369 		pfvf->flags |= OTX2_FLAG_TX_PAUSE_ENABLED;
370 	else
371 		pfvf->flags &= ~OTX2_FLAG_TX_PAUSE_ENABLED;
372 
373 	return otx2_config_pause_frm(pfvf);
374 }
375 
otx2_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)376 static void otx2_get_ringparam(struct net_device *netdev,
377 			       struct ethtool_ringparam *ring,
378 			       struct kernel_ethtool_ringparam *kernel_ring,
379 			       struct netlink_ext_ack *extack)
380 {
381 	struct otx2_nic *pfvf = netdev_priv(netdev);
382 	struct otx2_qset *qs = &pfvf->qset;
383 
384 	ring->rx_max_pending = Q_COUNT(Q_SIZE_MAX);
385 	ring->rx_pending = qs->rqe_cnt ? qs->rqe_cnt : Q_COUNT(Q_SIZE_256);
386 	ring->tx_max_pending = Q_COUNT(Q_SIZE_MAX);
387 	ring->tx_pending = qs->sqe_cnt ? qs->sqe_cnt : Q_COUNT(Q_SIZE_4K);
388 	kernel_ring->rx_buf_len = pfvf->hw.rbuf_len;
389 	kernel_ring->cqe_size = pfvf->hw.xqe_size;
390 }
391 
otx2_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ring,struct kernel_ethtool_ringparam * kernel_ring,struct netlink_ext_ack * extack)392 static int otx2_set_ringparam(struct net_device *netdev,
393 			      struct ethtool_ringparam *ring,
394 			      struct kernel_ethtool_ringparam *kernel_ring,
395 			      struct netlink_ext_ack *extack)
396 {
397 	struct otx2_nic *pfvf = netdev_priv(netdev);
398 	u32 rx_buf_len = kernel_ring->rx_buf_len;
399 	u32 old_rx_buf_len = pfvf->hw.rbuf_len;
400 	u32 xqe_size = kernel_ring->cqe_size;
401 	bool if_up = netif_running(netdev);
402 	struct otx2_qset *qs = &pfvf->qset;
403 	u32 rx_count, tx_count;
404 
405 	if (ring->rx_mini_pending || ring->rx_jumbo_pending)
406 		return -EINVAL;
407 
408 	/* Hardware supports max size of 32k for a receive buffer
409 	 * and 1536 is typical ethernet frame size.
410 	 */
411 	if (rx_buf_len && (rx_buf_len < 1536 || rx_buf_len > 32768)) {
412 		netdev_err(netdev,
413 			   "Receive buffer range is 1536 - 32768");
414 		return -EINVAL;
415 	}
416 
417 	if (xqe_size != 128 && xqe_size != 512) {
418 		netdev_err(netdev,
419 			   "Completion event size must be 128 or 512");
420 		return -EINVAL;
421 	}
422 
423 	/* Permitted lengths are 16 64 256 1K 4K 16K 64K 256K 1M  */
424 	rx_count = ring->rx_pending;
425 	/* On some silicon variants a skid or reserved CQEs are
426 	 * needed to avoid CQ overflow.
427 	 */
428 	if (rx_count < pfvf->hw.rq_skid)
429 		rx_count =  pfvf->hw.rq_skid;
430 	rx_count = Q_COUNT(Q_SIZE(rx_count, 3));
431 
432 	/* Due pipelining impact minimum 2000 unused SQ CQE's
433 	 * need to be maintained to avoid CQ overflow, hence the
434 	 * minimum 4K size.
435 	 */
436 	tx_count = clamp_t(u32, ring->tx_pending,
437 			   Q_COUNT(Q_SIZE_4K), Q_COUNT(Q_SIZE_MAX));
438 	tx_count = Q_COUNT(Q_SIZE(tx_count, 3));
439 
440 	if (tx_count == qs->sqe_cnt && rx_count == qs->rqe_cnt &&
441 	    rx_buf_len == old_rx_buf_len && xqe_size == pfvf->hw.xqe_size)
442 		return 0;
443 
444 	if (if_up)
445 		netdev->netdev_ops->ndo_stop(netdev);
446 
447 	/* Assigned to the nearest possible exponent. */
448 	qs->sqe_cnt = tx_count;
449 	qs->rqe_cnt = rx_count;
450 
451 	pfvf->hw.rbuf_len = rx_buf_len;
452 	pfvf->hw.xqe_size = xqe_size;
453 
454 	if (if_up)
455 		return netdev->netdev_ops->ndo_open(netdev);
456 
457 	return 0;
458 }
459 
otx2_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * cmd,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)460 static int otx2_get_coalesce(struct net_device *netdev,
461 			     struct ethtool_coalesce *cmd,
462 			     struct kernel_ethtool_coalesce *kernel_coal,
463 			     struct netlink_ext_ack *extack)
464 {
465 	struct otx2_nic *pfvf = netdev_priv(netdev);
466 	struct otx2_hw *hw = &pfvf->hw;
467 
468 	cmd->rx_coalesce_usecs = hw->cq_time_wait;
469 	cmd->rx_max_coalesced_frames = hw->cq_ecount_wait;
470 	cmd->tx_coalesce_usecs = hw->cq_time_wait;
471 	cmd->tx_max_coalesced_frames = hw->cq_ecount_wait;
472 	if ((pfvf->flags & OTX2_FLAG_ADPTV_INT_COAL_ENABLED) ==
473 			OTX2_FLAG_ADPTV_INT_COAL_ENABLED) {
474 		cmd->use_adaptive_rx_coalesce = 1;
475 		cmd->use_adaptive_tx_coalesce = 1;
476 	} else {
477 		cmd->use_adaptive_rx_coalesce = 0;
478 		cmd->use_adaptive_tx_coalesce = 0;
479 	}
480 
481 	return 0;
482 }
483 
otx2_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)484 static int otx2_set_coalesce(struct net_device *netdev,
485 			     struct ethtool_coalesce *ec,
486 			     struct kernel_ethtool_coalesce *kernel_coal,
487 			     struct netlink_ext_ack *extack)
488 {
489 	struct otx2_nic *pfvf = netdev_priv(netdev);
490 	struct otx2_hw *hw = &pfvf->hw;
491 	u8 priv_coalesce_status;
492 	int qidx;
493 
494 	if (!ec->rx_max_coalesced_frames || !ec->tx_max_coalesced_frames)
495 		return 0;
496 
497 	if (ec->use_adaptive_rx_coalesce != ec->use_adaptive_tx_coalesce) {
498 		netdev_err(netdev,
499 			   "adaptive-rx should be same as adaptive-tx");
500 		return -EINVAL;
501 	}
502 
503 	/* Check and update coalesce status */
504 	if ((pfvf->flags & OTX2_FLAG_ADPTV_INT_COAL_ENABLED) ==
505 			OTX2_FLAG_ADPTV_INT_COAL_ENABLED) {
506 		priv_coalesce_status = 1;
507 		if (!ec->use_adaptive_rx_coalesce)
508 			pfvf->flags &= ~OTX2_FLAG_ADPTV_INT_COAL_ENABLED;
509 	} else {
510 		priv_coalesce_status = 0;
511 		if (ec->use_adaptive_rx_coalesce)
512 			pfvf->flags |= OTX2_FLAG_ADPTV_INT_COAL_ENABLED;
513 	}
514 
515 	/* 'cq_time_wait' is 8bit and is in multiple of 100ns,
516 	 * so clamp the user given value to the range of 1 to 25usec.
517 	 */
518 	ec->rx_coalesce_usecs = clamp_t(u32, ec->rx_coalesce_usecs,
519 					1, CQ_TIMER_THRESH_MAX);
520 	ec->tx_coalesce_usecs = clamp_t(u32, ec->tx_coalesce_usecs,
521 					1, CQ_TIMER_THRESH_MAX);
522 
523 	/* Rx and Tx are mapped to same CQ, check which one
524 	 * is changed, if both then choose the min.
525 	 */
526 	if (hw->cq_time_wait == ec->rx_coalesce_usecs)
527 		hw->cq_time_wait = ec->tx_coalesce_usecs;
528 	else if (hw->cq_time_wait == ec->tx_coalesce_usecs)
529 		hw->cq_time_wait = ec->rx_coalesce_usecs;
530 	else
531 		hw->cq_time_wait = min_t(u8, ec->rx_coalesce_usecs,
532 					 ec->tx_coalesce_usecs);
533 
534 	/* Max ecount_wait supported is 16bit,
535 	 * so clamp the user given value to the range of 1 to 64k.
536 	 */
537 	ec->rx_max_coalesced_frames = clamp_t(u32, ec->rx_max_coalesced_frames,
538 					      1, NAPI_POLL_WEIGHT);
539 	ec->tx_max_coalesced_frames = clamp_t(u32, ec->tx_max_coalesced_frames,
540 					      1, NAPI_POLL_WEIGHT);
541 
542 	/* Rx and Tx are mapped to same CQ, check which one
543 	 * is changed, if both then choose the min.
544 	 */
545 	if (hw->cq_ecount_wait == ec->rx_max_coalesced_frames)
546 		hw->cq_ecount_wait = ec->tx_max_coalesced_frames;
547 	else if (hw->cq_ecount_wait == ec->tx_max_coalesced_frames)
548 		hw->cq_ecount_wait = ec->rx_max_coalesced_frames;
549 	else
550 		hw->cq_ecount_wait = min_t(u16, ec->rx_max_coalesced_frames,
551 					   ec->tx_max_coalesced_frames);
552 
553 	/* Reset 'cq_time_wait' and 'cq_ecount_wait' to
554 	 * default values if coalesce status changed from
555 	 * 'on' to 'off'.
556 	 */
557 	if (priv_coalesce_status &&
558 	    ((pfvf->flags & OTX2_FLAG_ADPTV_INT_COAL_ENABLED) !=
559 	     OTX2_FLAG_ADPTV_INT_COAL_ENABLED)) {
560 		hw->cq_time_wait = CQ_TIMER_THRESH_DEFAULT;
561 		hw->cq_ecount_wait = CQ_CQE_THRESH_DEFAULT;
562 	}
563 
564 	if (netif_running(netdev)) {
565 		for (qidx = 0; qidx < pfvf->hw.cint_cnt; qidx++)
566 			otx2_config_irq_coalescing(pfvf, qidx);
567 	}
568 
569 	return 0;
570 }
571 
otx2_get_rss_hash_opts(struct otx2_nic * pfvf,struct ethtool_rxnfc * nfc)572 static int otx2_get_rss_hash_opts(struct otx2_nic *pfvf,
573 				  struct ethtool_rxnfc *nfc)
574 {
575 	struct otx2_rss_info *rss = &pfvf->hw.rss_info;
576 
577 	if (!(rss->flowkey_cfg &
578 	    (NIX_FLOW_KEY_TYPE_IPV4 | NIX_FLOW_KEY_TYPE_IPV6)))
579 		return 0;
580 
581 	/* Mimimum is IPv4 and IPv6, SIP/DIP */
582 	nfc->data = RXH_IP_SRC | RXH_IP_DST;
583 	if (rss->flowkey_cfg & NIX_FLOW_KEY_TYPE_VLAN)
584 		nfc->data |= RXH_VLAN;
585 
586 	switch (nfc->flow_type) {
587 	case TCP_V4_FLOW:
588 	case TCP_V6_FLOW:
589 		if (rss->flowkey_cfg & NIX_FLOW_KEY_TYPE_TCP)
590 			nfc->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
591 		break;
592 	case UDP_V4_FLOW:
593 	case UDP_V6_FLOW:
594 		if (rss->flowkey_cfg & NIX_FLOW_KEY_TYPE_UDP)
595 			nfc->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
596 		break;
597 	case SCTP_V4_FLOW:
598 	case SCTP_V6_FLOW:
599 		if (rss->flowkey_cfg & NIX_FLOW_KEY_TYPE_SCTP)
600 			nfc->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
601 		break;
602 	case AH_ESP_V4_FLOW:
603 	case AH_ESP_V6_FLOW:
604 		if (rss->flowkey_cfg & NIX_FLOW_KEY_TYPE_ESP)
605 			nfc->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
606 		break;
607 	case AH_V4_FLOW:
608 	case ESP_V4_FLOW:
609 	case IPV4_FLOW:
610 		break;
611 	case AH_V6_FLOW:
612 	case ESP_V6_FLOW:
613 	case IPV6_FLOW:
614 		break;
615 	default:
616 		return -EINVAL;
617 	}
618 
619 	return 0;
620 }
621 
otx2_set_rss_hash_opts(struct otx2_nic * pfvf,struct ethtool_rxnfc * nfc)622 static int otx2_set_rss_hash_opts(struct otx2_nic *pfvf,
623 				  struct ethtool_rxnfc *nfc)
624 {
625 	struct otx2_rss_info *rss = &pfvf->hw.rss_info;
626 	u32 rxh_l4 = RXH_L4_B_0_1 | RXH_L4_B_2_3;
627 	u32 rss_cfg = rss->flowkey_cfg;
628 
629 	if (!rss->enable) {
630 		netdev_err(pfvf->netdev,
631 			   "RSS is disabled, cannot change settings\n");
632 		return -EIO;
633 	}
634 
635 	/* Mimimum is IPv4 and IPv6, SIP/DIP */
636 	if (!(nfc->data & RXH_IP_SRC) || !(nfc->data & RXH_IP_DST))
637 		return -EINVAL;
638 
639 	if (nfc->data & RXH_VLAN)
640 		rss_cfg |=  NIX_FLOW_KEY_TYPE_VLAN;
641 	else
642 		rss_cfg &= ~NIX_FLOW_KEY_TYPE_VLAN;
643 
644 	switch (nfc->flow_type) {
645 	case TCP_V4_FLOW:
646 	case TCP_V6_FLOW:
647 		/* Different config for v4 and v6 is not supported.
648 		 * Both of them have to be either 4-tuple or 2-tuple.
649 		 */
650 		switch (nfc->data & rxh_l4) {
651 		case 0:
652 			rss_cfg &= ~NIX_FLOW_KEY_TYPE_TCP;
653 			break;
654 		case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
655 			rss_cfg |= NIX_FLOW_KEY_TYPE_TCP;
656 			break;
657 		default:
658 			return -EINVAL;
659 		}
660 		break;
661 	case UDP_V4_FLOW:
662 	case UDP_V6_FLOW:
663 		switch (nfc->data & rxh_l4) {
664 		case 0:
665 			rss_cfg &= ~NIX_FLOW_KEY_TYPE_UDP;
666 			break;
667 		case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
668 			rss_cfg |= NIX_FLOW_KEY_TYPE_UDP;
669 			break;
670 		default:
671 			return -EINVAL;
672 		}
673 		break;
674 	case SCTP_V4_FLOW:
675 	case SCTP_V6_FLOW:
676 		switch (nfc->data & rxh_l4) {
677 		case 0:
678 			rss_cfg &= ~NIX_FLOW_KEY_TYPE_SCTP;
679 			break;
680 		case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
681 			rss_cfg |= NIX_FLOW_KEY_TYPE_SCTP;
682 			break;
683 		default:
684 			return -EINVAL;
685 		}
686 		break;
687 	case AH_ESP_V4_FLOW:
688 	case AH_ESP_V6_FLOW:
689 		switch (nfc->data & rxh_l4) {
690 		case 0:
691 			rss_cfg &= ~(NIX_FLOW_KEY_TYPE_ESP |
692 				     NIX_FLOW_KEY_TYPE_AH);
693 			rss_cfg |= NIX_FLOW_KEY_TYPE_VLAN |
694 				   NIX_FLOW_KEY_TYPE_IPV4_PROTO;
695 			break;
696 		case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
697 			/* If VLAN hashing is also requested for ESP then do not
698 			 * allow because of hardware 40 bytes flow key limit.
699 			 */
700 			if (rss_cfg & NIX_FLOW_KEY_TYPE_VLAN) {
701 				netdev_err(pfvf->netdev,
702 					   "RSS hash of ESP or AH with VLAN is not supported\n");
703 				return -EOPNOTSUPP;
704 			}
705 
706 			rss_cfg |= NIX_FLOW_KEY_TYPE_ESP | NIX_FLOW_KEY_TYPE_AH;
707 			/* Disable IPv4 proto hashing since IPv6 SA+DA(32 bytes)
708 			 * and ESP SPI+sequence(8 bytes) uses hardware maximum
709 			 * limit of 40 byte flow key.
710 			 */
711 			rss_cfg &= ~NIX_FLOW_KEY_TYPE_IPV4_PROTO;
712 			break;
713 		default:
714 			return -EINVAL;
715 		}
716 		break;
717 	case IPV4_FLOW:
718 	case IPV6_FLOW:
719 		rss_cfg = NIX_FLOW_KEY_TYPE_IPV4 | NIX_FLOW_KEY_TYPE_IPV6;
720 		break;
721 	default:
722 		return -EINVAL;
723 	}
724 
725 	rss->flowkey_cfg = rss_cfg;
726 	otx2_set_flowkey_cfg(pfvf);
727 	return 0;
728 }
729 
otx2_get_rxnfc(struct net_device * dev,struct ethtool_rxnfc * nfc,u32 * rules)730 static int otx2_get_rxnfc(struct net_device *dev,
731 			  struct ethtool_rxnfc *nfc, u32 *rules)
732 {
733 	bool ntuple = !!(dev->features & NETIF_F_NTUPLE);
734 	struct otx2_nic *pfvf = netdev_priv(dev);
735 	int ret = -EOPNOTSUPP;
736 
737 	switch (nfc->cmd) {
738 	case ETHTOOL_GRXRINGS:
739 		nfc->data = pfvf->hw.rx_queues;
740 		ret = 0;
741 		break;
742 	case ETHTOOL_GRXCLSRLCNT:
743 		if (netif_running(dev) && ntuple) {
744 			nfc->rule_cnt = pfvf->flow_cfg->nr_flows;
745 			ret = 0;
746 		}
747 		break;
748 	case ETHTOOL_GRXCLSRULE:
749 		if (netif_running(dev) && ntuple)
750 			ret = otx2_get_flow(pfvf, nfc,  nfc->fs.location);
751 		break;
752 	case ETHTOOL_GRXCLSRLALL:
753 		if (netif_running(dev) && ntuple)
754 			ret = otx2_get_all_flows(pfvf, nfc, rules);
755 		break;
756 	case ETHTOOL_GRXFH:
757 		return otx2_get_rss_hash_opts(pfvf, nfc);
758 	default:
759 		break;
760 	}
761 	return ret;
762 }
763 
otx2_set_rxnfc(struct net_device * dev,struct ethtool_rxnfc * nfc)764 static int otx2_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *nfc)
765 {
766 	bool ntuple = !!(dev->features & NETIF_F_NTUPLE);
767 	struct otx2_nic *pfvf = netdev_priv(dev);
768 	int ret = -EOPNOTSUPP;
769 
770 	pfvf->flow_cfg->ntuple = ntuple;
771 	switch (nfc->cmd) {
772 	case ETHTOOL_SRXFH:
773 		ret = otx2_set_rss_hash_opts(pfvf, nfc);
774 		break;
775 	case ETHTOOL_SRXCLSRLINS:
776 		if (netif_running(dev) && ntuple)
777 			ret = otx2_add_flow(pfvf, nfc);
778 		break;
779 	case ETHTOOL_SRXCLSRLDEL:
780 		if (netif_running(dev) && ntuple)
781 			ret = otx2_remove_flow(pfvf, nfc->fs.location);
782 		break;
783 	default:
784 		break;
785 	}
786 
787 	return ret;
788 }
789 
otx2_get_rxfh_key_size(struct net_device * netdev)790 static u32 otx2_get_rxfh_key_size(struct net_device *netdev)
791 {
792 	struct otx2_nic *pfvf = netdev_priv(netdev);
793 	struct otx2_rss_info *rss;
794 
795 	rss = &pfvf->hw.rss_info;
796 
797 	return sizeof(rss->key);
798 }
799 
otx2_get_rxfh_indir_size(struct net_device * dev)800 static u32 otx2_get_rxfh_indir_size(struct net_device *dev)
801 {
802 	return  MAX_RSS_INDIR_TBL_SIZE;
803 }
804 
otx2_rss_ctx_delete(struct otx2_nic * pfvf,int ctx_id)805 static int otx2_rss_ctx_delete(struct otx2_nic *pfvf, int ctx_id)
806 {
807 	struct otx2_rss_info *rss = &pfvf->hw.rss_info;
808 
809 	otx2_rss_ctx_flow_del(pfvf, ctx_id);
810 	kfree(rss->rss_ctx[ctx_id]);
811 	rss->rss_ctx[ctx_id] = NULL;
812 
813 	return 0;
814 }
815 
otx2_rss_ctx_create(struct otx2_nic * pfvf,u32 * rss_context)816 static int otx2_rss_ctx_create(struct otx2_nic *pfvf,
817 			       u32 *rss_context)
818 {
819 	struct otx2_rss_info *rss = &pfvf->hw.rss_info;
820 	u8 ctx;
821 
822 	for (ctx = 0; ctx < MAX_RSS_GROUPS; ctx++) {
823 		if (!rss->rss_ctx[ctx])
824 			break;
825 	}
826 	if (ctx == MAX_RSS_GROUPS)
827 		return -EINVAL;
828 
829 	rss->rss_ctx[ctx] = kzalloc(sizeof(*rss->rss_ctx[ctx]), GFP_KERNEL);
830 	if (!rss->rss_ctx[ctx])
831 		return -ENOMEM;
832 	*rss_context = ctx;
833 
834 	return 0;
835 }
836 
837 /* RSS context configuration */
otx2_set_rxfh_context(struct net_device * dev,const u32 * indir,const u8 * hkey,const u8 hfunc,u32 * rss_context,bool delete)838 static int otx2_set_rxfh_context(struct net_device *dev, const u32 *indir,
839 				 const u8 *hkey, const u8 hfunc,
840 				 u32 *rss_context, bool delete)
841 {
842 	struct otx2_nic *pfvf = netdev_priv(dev);
843 	struct otx2_rss_ctx *rss_ctx;
844 	struct otx2_rss_info *rss;
845 	int ret, idx;
846 
847 	if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
848 		return -EOPNOTSUPP;
849 
850 	if (*rss_context != ETH_RXFH_CONTEXT_ALLOC &&
851 	    *rss_context >= MAX_RSS_GROUPS)
852 		return -EINVAL;
853 
854 	rss = &pfvf->hw.rss_info;
855 
856 	if (!rss->enable) {
857 		netdev_err(dev, "RSS is disabled, cannot change settings\n");
858 		return -EIO;
859 	}
860 
861 	if (hkey) {
862 		memcpy(rss->key, hkey, sizeof(rss->key));
863 		otx2_set_rss_key(pfvf);
864 	}
865 	if (delete)
866 		return otx2_rss_ctx_delete(pfvf, *rss_context);
867 
868 	if (*rss_context == ETH_RXFH_CONTEXT_ALLOC) {
869 		ret = otx2_rss_ctx_create(pfvf, rss_context);
870 		if (ret)
871 			return ret;
872 	}
873 	if (indir) {
874 		rss_ctx = rss->rss_ctx[*rss_context];
875 		for (idx = 0; idx < rss->rss_size; idx++)
876 			rss_ctx->ind_tbl[idx] = indir[idx];
877 	}
878 	otx2_set_rss_table(pfvf, *rss_context);
879 
880 	return 0;
881 }
882 
otx2_get_rxfh_context(struct net_device * dev,u32 * indir,u8 * hkey,u8 * hfunc,u32 rss_context)883 static int otx2_get_rxfh_context(struct net_device *dev, u32 *indir,
884 				 u8 *hkey, u8 *hfunc, u32 rss_context)
885 {
886 	struct otx2_nic *pfvf = netdev_priv(dev);
887 	struct otx2_rss_ctx *rss_ctx;
888 	struct otx2_rss_info *rss;
889 	int idx, rx_queues;
890 
891 	rss = &pfvf->hw.rss_info;
892 
893 	if (hfunc)
894 		*hfunc = ETH_RSS_HASH_TOP;
895 
896 	if (!indir)
897 		return 0;
898 
899 	if (!rss->enable && rss_context == DEFAULT_RSS_CONTEXT_GROUP) {
900 		rx_queues = pfvf->hw.rx_queues;
901 		for (idx = 0; idx < MAX_RSS_INDIR_TBL_SIZE; idx++)
902 			indir[idx] = ethtool_rxfh_indir_default(idx, rx_queues);
903 		return 0;
904 	}
905 	if (rss_context >= MAX_RSS_GROUPS)
906 		return -ENOENT;
907 
908 	rss_ctx = rss->rss_ctx[rss_context];
909 	if (!rss_ctx)
910 		return -ENOENT;
911 
912 	if (indir) {
913 		for (idx = 0; idx < rss->rss_size; idx++)
914 			indir[idx] = rss_ctx->ind_tbl[idx];
915 	}
916 	if (hkey)
917 		memcpy(hkey, rss->key, sizeof(rss->key));
918 
919 	return 0;
920 }
921 
922 /* Get RSS configuration */
otx2_get_rxfh(struct net_device * dev,u32 * indir,u8 * hkey,u8 * hfunc)923 static int otx2_get_rxfh(struct net_device *dev, u32 *indir,
924 			 u8 *hkey, u8 *hfunc)
925 {
926 	return otx2_get_rxfh_context(dev, indir, hkey, hfunc,
927 				     DEFAULT_RSS_CONTEXT_GROUP);
928 }
929 
930 /* Configure RSS table and hash key */
otx2_set_rxfh(struct net_device * dev,const u32 * indir,const u8 * hkey,const u8 hfunc)931 static int otx2_set_rxfh(struct net_device *dev, const u32 *indir,
932 			 const u8 *hkey, const u8 hfunc)
933 {
934 
935 	u32 rss_context = DEFAULT_RSS_CONTEXT_GROUP;
936 
937 	return otx2_set_rxfh_context(dev, indir, hkey, hfunc, &rss_context, 0);
938 }
939 
otx2_get_msglevel(struct net_device * netdev)940 static u32 otx2_get_msglevel(struct net_device *netdev)
941 {
942 	struct otx2_nic *pfvf = netdev_priv(netdev);
943 
944 	return pfvf->msg_enable;
945 }
946 
otx2_set_msglevel(struct net_device * netdev,u32 val)947 static void otx2_set_msglevel(struct net_device *netdev, u32 val)
948 {
949 	struct otx2_nic *pfvf = netdev_priv(netdev);
950 
951 	pfvf->msg_enable = val;
952 }
953 
otx2_get_link(struct net_device * netdev)954 static u32 otx2_get_link(struct net_device *netdev)
955 {
956 	struct otx2_nic *pfvf = netdev_priv(netdev);
957 
958 	/* LBK link is internal and always UP */
959 	if (is_otx2_lbkvf(pfvf->pdev))
960 		return 1;
961 	return pfvf->linfo.link_up;
962 }
963 
otx2_get_ts_info(struct net_device * netdev,struct ethtool_ts_info * info)964 static int otx2_get_ts_info(struct net_device *netdev,
965 			    struct ethtool_ts_info *info)
966 {
967 	struct otx2_nic *pfvf = netdev_priv(netdev);
968 
969 	if (!pfvf->ptp)
970 		return ethtool_op_get_ts_info(netdev, info);
971 
972 	info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
973 				SOF_TIMESTAMPING_RX_SOFTWARE |
974 				SOF_TIMESTAMPING_SOFTWARE |
975 				SOF_TIMESTAMPING_TX_HARDWARE |
976 				SOF_TIMESTAMPING_RX_HARDWARE |
977 				SOF_TIMESTAMPING_RAW_HARDWARE;
978 
979 	info->phc_index = otx2_ptp_clock_index(pfvf);
980 
981 	info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
982 	if (test_bit(CN10K_PTP_ONESTEP, &pfvf->hw.cap_flag))
983 		info->tx_types |= BIT(HWTSTAMP_TX_ONESTEP_SYNC);
984 
985 	info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
986 			   BIT(HWTSTAMP_FILTER_ALL);
987 
988 	return 0;
989 }
990 
otx2_get_fwdata(struct otx2_nic * pfvf)991 static struct cgx_fw_data *otx2_get_fwdata(struct otx2_nic *pfvf)
992 {
993 	struct cgx_fw_data *rsp = NULL;
994 	struct msg_req *req;
995 	int err = 0;
996 
997 	mutex_lock(&pfvf->mbox.lock);
998 	req = otx2_mbox_alloc_msg_cgx_get_aux_link_info(&pfvf->mbox);
999 	if (!req) {
1000 		mutex_unlock(&pfvf->mbox.lock);
1001 		return ERR_PTR(-ENOMEM);
1002 	}
1003 
1004 	err = otx2_sync_mbox_msg(&pfvf->mbox);
1005 	if (!err) {
1006 		rsp = (struct cgx_fw_data *)
1007 			otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
1008 	} else {
1009 		rsp = ERR_PTR(err);
1010 	}
1011 
1012 	mutex_unlock(&pfvf->mbox.lock);
1013 	return rsp;
1014 }
1015 
otx2_get_fecparam(struct net_device * netdev,struct ethtool_fecparam * fecparam)1016 static int otx2_get_fecparam(struct net_device *netdev,
1017 			     struct ethtool_fecparam *fecparam)
1018 {
1019 	struct otx2_nic *pfvf = netdev_priv(netdev);
1020 	struct cgx_fw_data *rsp;
1021 	const int fec[] = {
1022 		ETHTOOL_FEC_OFF,
1023 		ETHTOOL_FEC_BASER,
1024 		ETHTOOL_FEC_RS,
1025 		ETHTOOL_FEC_BASER | ETHTOOL_FEC_RS};
1026 #define FEC_MAX_INDEX 4
1027 	if (pfvf->linfo.fec < FEC_MAX_INDEX)
1028 		fecparam->active_fec = fec[pfvf->linfo.fec];
1029 
1030 	rsp = otx2_get_fwdata(pfvf);
1031 	if (IS_ERR(rsp))
1032 		return PTR_ERR(rsp);
1033 
1034 	if (rsp->fwdata.supported_fec < FEC_MAX_INDEX) {
1035 		if (!rsp->fwdata.supported_fec)
1036 			fecparam->fec = ETHTOOL_FEC_NONE;
1037 		else
1038 			fecparam->fec = fec[rsp->fwdata.supported_fec];
1039 	}
1040 	return 0;
1041 }
1042 
otx2_set_fecparam(struct net_device * netdev,struct ethtool_fecparam * fecparam)1043 static int otx2_set_fecparam(struct net_device *netdev,
1044 			     struct ethtool_fecparam *fecparam)
1045 {
1046 	struct otx2_nic *pfvf = netdev_priv(netdev);
1047 	struct mbox *mbox = &pfvf->mbox;
1048 	struct fec_mode *req, *rsp;
1049 	int err = 0, fec = 0;
1050 
1051 	switch (fecparam->fec) {
1052 	/* Firmware does not support AUTO mode consider it as FEC_OFF */
1053 	case ETHTOOL_FEC_OFF:
1054 	case ETHTOOL_FEC_AUTO:
1055 		fec = OTX2_FEC_OFF;
1056 		break;
1057 	case ETHTOOL_FEC_RS:
1058 		fec = OTX2_FEC_RS;
1059 		break;
1060 	case ETHTOOL_FEC_BASER:
1061 		fec = OTX2_FEC_BASER;
1062 		break;
1063 	default:
1064 		netdev_warn(pfvf->netdev, "Unsupported FEC mode: %d",
1065 			    fecparam->fec);
1066 		return -EINVAL;
1067 	}
1068 
1069 	if (fec == pfvf->linfo.fec)
1070 		return 0;
1071 
1072 	mutex_lock(&mbox->lock);
1073 	req = otx2_mbox_alloc_msg_cgx_set_fec_param(&pfvf->mbox);
1074 	if (!req) {
1075 		err = -ENOMEM;
1076 		goto end;
1077 	}
1078 	req->fec = fec;
1079 	err = otx2_sync_mbox_msg(&pfvf->mbox);
1080 	if (err)
1081 		goto end;
1082 
1083 	rsp = (struct fec_mode *)otx2_mbox_get_rsp(&pfvf->mbox.mbox,
1084 						   0, &req->hdr);
1085 	if (rsp->fec >= 0)
1086 		pfvf->linfo.fec = rsp->fec;
1087 	else
1088 		err = rsp->fec;
1089 end:
1090 	mutex_unlock(&mbox->lock);
1091 	return err;
1092 }
1093 
otx2_get_fec_info(u64 index,int req_mode,struct ethtool_link_ksettings * link_ksettings)1094 static void otx2_get_fec_info(u64 index, int req_mode,
1095 			      struct ethtool_link_ksettings *link_ksettings)
1096 {
1097 	__ETHTOOL_DECLARE_LINK_MODE_MASK(otx2_fec_modes) = { 0, };
1098 
1099 	switch (index) {
1100 	case OTX2_FEC_NONE:
1101 		linkmode_set_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT,
1102 				 otx2_fec_modes);
1103 		break;
1104 	case OTX2_FEC_BASER:
1105 		linkmode_set_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT,
1106 				 otx2_fec_modes);
1107 		break;
1108 	case OTX2_FEC_RS:
1109 		linkmode_set_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT,
1110 				 otx2_fec_modes);
1111 		break;
1112 	case OTX2_FEC_BASER | OTX2_FEC_RS:
1113 		linkmode_set_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT,
1114 				 otx2_fec_modes);
1115 		linkmode_set_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT,
1116 				 otx2_fec_modes);
1117 		break;
1118 	}
1119 
1120 	/* Add fec modes to existing modes */
1121 	if (req_mode == OTX2_MODE_ADVERTISED)
1122 		linkmode_or(link_ksettings->link_modes.advertising,
1123 			    link_ksettings->link_modes.advertising,
1124 			    otx2_fec_modes);
1125 	else
1126 		linkmode_or(link_ksettings->link_modes.supported,
1127 			    link_ksettings->link_modes.supported,
1128 			    otx2_fec_modes);
1129 }
1130 
otx2_get_link_mode_info(u64 link_mode_bmap,bool req_mode,struct ethtool_link_ksettings * link_ksettings)1131 static void otx2_get_link_mode_info(u64 link_mode_bmap,
1132 				    bool req_mode,
1133 				    struct ethtool_link_ksettings
1134 				    *link_ksettings)
1135 {
1136 	__ETHTOOL_DECLARE_LINK_MODE_MASK(otx2_link_modes) = { 0, };
1137 	const int otx2_sgmii_features[6] = {
1138 		ETHTOOL_LINK_MODE_10baseT_Half_BIT,
1139 		ETHTOOL_LINK_MODE_10baseT_Full_BIT,
1140 		ETHTOOL_LINK_MODE_100baseT_Half_BIT,
1141 		ETHTOOL_LINK_MODE_100baseT_Full_BIT,
1142 		ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
1143 		ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
1144 	};
1145 	/* CGX link modes to Ethtool link mode mapping */
1146 	const int cgx_link_mode[27] = {
1147 		0, /* SGMII  Mode */
1148 		ETHTOOL_LINK_MODE_1000baseX_Full_BIT,
1149 		ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
1150 		ETHTOOL_LINK_MODE_10000baseSR_Full_BIT,
1151 		ETHTOOL_LINK_MODE_10000baseLR_Full_BIT,
1152 		ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
1153 		0,
1154 		ETHTOOL_LINK_MODE_25000baseSR_Full_BIT,
1155 		0,
1156 		0,
1157 		ETHTOOL_LINK_MODE_25000baseCR_Full_BIT,
1158 		ETHTOOL_LINK_MODE_25000baseKR_Full_BIT,
1159 		ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT,
1160 		ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT,
1161 		ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
1162 		ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
1163 		0,
1164 		ETHTOOL_LINK_MODE_50000baseSR_Full_BIT,
1165 		0,
1166 		ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT,
1167 		ETHTOOL_LINK_MODE_50000baseCR_Full_BIT,
1168 		ETHTOOL_LINK_MODE_50000baseKR_Full_BIT,
1169 		0,
1170 		ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT,
1171 		ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT,
1172 		ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT,
1173 		ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT
1174 	};
1175 	u8 bit;
1176 
1177 	for_each_set_bit(bit, (unsigned long *)&link_mode_bmap, 27) {
1178 		/* SGMII mode is set */
1179 		if (bit == 0)
1180 			linkmode_set_bit_array(otx2_sgmii_features,
1181 					       ARRAY_SIZE(otx2_sgmii_features),
1182 					       otx2_link_modes);
1183 		else
1184 			linkmode_set_bit(cgx_link_mode[bit], otx2_link_modes);
1185 	}
1186 
1187 	if (req_mode == OTX2_MODE_ADVERTISED)
1188 		linkmode_copy(link_ksettings->link_modes.advertising,
1189 			      otx2_link_modes);
1190 	else
1191 		linkmode_copy(link_ksettings->link_modes.supported,
1192 			      otx2_link_modes);
1193 }
1194 
otx2_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * cmd)1195 static int otx2_get_link_ksettings(struct net_device *netdev,
1196 				   struct ethtool_link_ksettings *cmd)
1197 {
1198 	struct otx2_nic *pfvf = netdev_priv(netdev);
1199 	struct cgx_fw_data *rsp = NULL;
1200 
1201 	cmd->base.duplex  = pfvf->linfo.full_duplex;
1202 	cmd->base.speed   = pfvf->linfo.speed;
1203 	cmd->base.autoneg = pfvf->linfo.an;
1204 
1205 	rsp = otx2_get_fwdata(pfvf);
1206 	if (IS_ERR(rsp))
1207 		return PTR_ERR(rsp);
1208 
1209 	if (rsp->fwdata.supported_an)
1210 		ethtool_link_ksettings_add_link_mode(cmd,
1211 						     supported,
1212 						     Autoneg);
1213 
1214 	otx2_get_link_mode_info(rsp->fwdata.advertised_link_modes,
1215 				OTX2_MODE_ADVERTISED, cmd);
1216 	otx2_get_fec_info(rsp->fwdata.advertised_fec,
1217 			  OTX2_MODE_ADVERTISED, cmd);
1218 	otx2_get_link_mode_info(rsp->fwdata.supported_link_modes,
1219 				OTX2_MODE_SUPPORTED, cmd);
1220 	otx2_get_fec_info(rsp->fwdata.supported_fec,
1221 			  OTX2_MODE_SUPPORTED, cmd);
1222 	return 0;
1223 }
1224 
otx2_get_advertised_mode(const struct ethtool_link_ksettings * cmd,u64 * mode)1225 static void otx2_get_advertised_mode(const struct ethtool_link_ksettings *cmd,
1226 				     u64 *mode)
1227 {
1228 	u32 bit_pos;
1229 
1230 	/* Firmware does not support requesting multiple advertised modes
1231 	 * return first set bit
1232 	 */
1233 	bit_pos = find_first_bit(cmd->link_modes.advertising,
1234 				 __ETHTOOL_LINK_MODE_MASK_NBITS);
1235 	if (bit_pos != __ETHTOOL_LINK_MODE_MASK_NBITS)
1236 		*mode = bit_pos;
1237 }
1238 
otx2_set_link_ksettings(struct net_device * netdev,const struct ethtool_link_ksettings * cmd)1239 static int otx2_set_link_ksettings(struct net_device *netdev,
1240 				   const struct ethtool_link_ksettings *cmd)
1241 {
1242 	struct otx2_nic *pf = netdev_priv(netdev);
1243 	struct ethtool_link_ksettings cur_ks;
1244 	struct cgx_set_link_mode_req *req;
1245 	struct mbox *mbox = &pf->mbox;
1246 	int err = 0;
1247 
1248 	memset(&cur_ks, 0, sizeof(struct ethtool_link_ksettings));
1249 
1250 	if (!ethtool_validate_speed(cmd->base.speed) ||
1251 	    !ethtool_validate_duplex(cmd->base.duplex))
1252 		return -EINVAL;
1253 
1254 	if (cmd->base.autoneg != AUTONEG_ENABLE &&
1255 	    cmd->base.autoneg != AUTONEG_DISABLE)
1256 		return -EINVAL;
1257 
1258 	otx2_get_link_ksettings(netdev, &cur_ks);
1259 
1260 	/* Check requested modes against supported modes by hardware */
1261 	if (!linkmode_subset(cmd->link_modes.advertising,
1262 			     cur_ks.link_modes.supported))
1263 		return -EINVAL;
1264 
1265 	mutex_lock(&mbox->lock);
1266 	req = otx2_mbox_alloc_msg_cgx_set_link_mode(&pf->mbox);
1267 	if (!req) {
1268 		err = -ENOMEM;
1269 		goto end;
1270 	}
1271 
1272 	req->args.speed = cmd->base.speed;
1273 	/* firmware expects 1 for half duplex and 0 for full duplex
1274 	 * hence inverting
1275 	 */
1276 	req->args.duplex = cmd->base.duplex ^ 0x1;
1277 	req->args.an = cmd->base.autoneg;
1278 	otx2_get_advertised_mode(cmd, &req->args.mode);
1279 
1280 	err = otx2_sync_mbox_msg(&pf->mbox);
1281 end:
1282 	mutex_unlock(&mbox->lock);
1283 	return err;
1284 }
1285 
otx2_get_fec_stats(struct net_device * netdev,struct ethtool_fec_stats * fec_stats)1286 static void otx2_get_fec_stats(struct net_device *netdev,
1287 			       struct ethtool_fec_stats *fec_stats)
1288 {
1289 	struct otx2_nic *pfvf = netdev_priv(netdev);
1290 	struct cgx_fw_data *rsp;
1291 
1292 	otx2_update_lmac_fec_stats(pfvf);
1293 
1294 	/* Report MAC FEC stats */
1295 	fec_stats->corrected_blocks.total     = pfvf->hw.cgx_fec_corr_blks;
1296 	fec_stats->uncorrectable_blocks.total = pfvf->hw.cgx_fec_uncorr_blks;
1297 
1298 	rsp = otx2_get_fwdata(pfvf);
1299 	if (!IS_ERR(rsp) && rsp->fwdata.phy.misc.has_fec_stats &&
1300 	    !otx2_get_phy_fec_stats(pfvf)) {
1301 		/* Fetch fwdata again because it's been recently populated with
1302 		 * latest PHY FEC stats.
1303 		 */
1304 		rsp = otx2_get_fwdata(pfvf);
1305 		if (!IS_ERR(rsp)) {
1306 			struct fec_stats_s *p = &rsp->fwdata.phy.fec_stats;
1307 
1308 			if (pfvf->linfo.fec == OTX2_FEC_BASER) {
1309 				fec_stats->corrected_blocks.total = p->brfec_corr_blks;
1310 				fec_stats->uncorrectable_blocks.total = p->brfec_uncorr_blks;
1311 			} else {
1312 				fec_stats->corrected_blocks.total = p->rsfec_corr_cws;
1313 				fec_stats->uncorrectable_blocks.total = p->rsfec_uncorr_cws;
1314 			}
1315 		}
1316 	}
1317 }
1318 
1319 static const struct ethtool_ops otx2_ethtool_ops = {
1320 	.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1321 				     ETHTOOL_COALESCE_MAX_FRAMES |
1322 				     ETHTOOL_COALESCE_USE_ADAPTIVE,
1323 	.supported_ring_params  = ETHTOOL_RING_USE_RX_BUF_LEN |
1324 				  ETHTOOL_RING_USE_CQE_SIZE,
1325 	.get_link		= otx2_get_link,
1326 	.get_drvinfo		= otx2_get_drvinfo,
1327 	.get_strings		= otx2_get_strings,
1328 	.get_ethtool_stats	= otx2_get_ethtool_stats,
1329 	.get_sset_count		= otx2_get_sset_count,
1330 	.set_channels		= otx2_set_channels,
1331 	.get_channels		= otx2_get_channels,
1332 	.get_ringparam		= otx2_get_ringparam,
1333 	.set_ringparam		= otx2_set_ringparam,
1334 	.get_coalesce		= otx2_get_coalesce,
1335 	.set_coalesce		= otx2_set_coalesce,
1336 	.get_rxnfc		= otx2_get_rxnfc,
1337 	.set_rxnfc              = otx2_set_rxnfc,
1338 	.get_rxfh_key_size	= otx2_get_rxfh_key_size,
1339 	.get_rxfh_indir_size	= otx2_get_rxfh_indir_size,
1340 	.get_rxfh		= otx2_get_rxfh,
1341 	.set_rxfh		= otx2_set_rxfh,
1342 	.get_rxfh_context	= otx2_get_rxfh_context,
1343 	.set_rxfh_context	= otx2_set_rxfh_context,
1344 	.get_msglevel		= otx2_get_msglevel,
1345 	.set_msglevel		= otx2_set_msglevel,
1346 	.get_pauseparam		= otx2_get_pauseparam,
1347 	.set_pauseparam		= otx2_set_pauseparam,
1348 	.get_ts_info		= otx2_get_ts_info,
1349 	.get_fec_stats		= otx2_get_fec_stats,
1350 	.get_fecparam		= otx2_get_fecparam,
1351 	.set_fecparam		= otx2_set_fecparam,
1352 	.get_link_ksettings     = otx2_get_link_ksettings,
1353 	.set_link_ksettings     = otx2_set_link_ksettings,
1354 };
1355 
otx2_set_ethtool_ops(struct net_device * netdev)1356 void otx2_set_ethtool_ops(struct net_device *netdev)
1357 {
1358 	netdev->ethtool_ops = &otx2_ethtool_ops;
1359 }
1360 
1361 /* VF's ethtool APIs */
otx2vf_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * info)1362 static void otx2vf_get_drvinfo(struct net_device *netdev,
1363 			       struct ethtool_drvinfo *info)
1364 {
1365 	struct otx2_nic *vf = netdev_priv(netdev);
1366 
1367 	strscpy(info->driver, DRV_VF_NAME, sizeof(info->driver));
1368 	strscpy(info->bus_info, pci_name(vf->pdev), sizeof(info->bus_info));
1369 }
1370 
otx2vf_get_strings(struct net_device * netdev,u32 sset,u8 * data)1371 static void otx2vf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
1372 {
1373 	struct otx2_nic *vf = netdev_priv(netdev);
1374 	int stats;
1375 
1376 	if (sset != ETH_SS_STATS)
1377 		return;
1378 
1379 	for (stats = 0; stats < otx2_n_dev_stats; stats++) {
1380 		memcpy(data, otx2_dev_stats[stats].name, ETH_GSTRING_LEN);
1381 		data += ETH_GSTRING_LEN;
1382 	}
1383 
1384 	for (stats = 0; stats < otx2_n_drv_stats; stats++) {
1385 		memcpy(data, otx2_drv_stats[stats].name, ETH_GSTRING_LEN);
1386 		data += ETH_GSTRING_LEN;
1387 	}
1388 
1389 	otx2_get_qset_strings(vf, &data, 0);
1390 
1391 	strcpy(data, "reset_count");
1392 	data += ETH_GSTRING_LEN;
1393 }
1394 
otx2vf_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)1395 static void otx2vf_get_ethtool_stats(struct net_device *netdev,
1396 				     struct ethtool_stats *stats, u64 *data)
1397 {
1398 	struct otx2_nic *vf = netdev_priv(netdev);
1399 	int stat;
1400 
1401 	otx2_get_dev_stats(vf);
1402 	for (stat = 0; stat < otx2_n_dev_stats; stat++)
1403 		*(data++) = ((u64 *)&vf->hw.dev_stats)
1404 				[otx2_dev_stats[stat].index];
1405 
1406 	for (stat = 0; stat < otx2_n_drv_stats; stat++)
1407 		*(data++) = atomic_read(&((atomic_t *)&vf->hw.drv_stats)
1408 						[otx2_drv_stats[stat].index]);
1409 
1410 	otx2_get_qset_stats(vf, stats, &data);
1411 	*(data++) = vf->reset_count;
1412 }
1413 
otx2vf_get_sset_count(struct net_device * netdev,int sset)1414 static int otx2vf_get_sset_count(struct net_device *netdev, int sset)
1415 {
1416 	struct otx2_nic *vf = netdev_priv(netdev);
1417 	int qstats_count;
1418 
1419 	if (sset != ETH_SS_STATS)
1420 		return -EINVAL;
1421 
1422 	qstats_count = otx2_n_queue_stats *
1423 		       (vf->hw.rx_queues + otx2_get_total_tx_queues(vf));
1424 
1425 	return otx2_n_dev_stats + otx2_n_drv_stats + qstats_count + 1;
1426 }
1427 
otx2vf_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * cmd)1428 static int otx2vf_get_link_ksettings(struct net_device *netdev,
1429 				     struct ethtool_link_ksettings *cmd)
1430 {
1431 	struct otx2_nic *pfvf = netdev_priv(netdev);
1432 
1433 	if (is_otx2_lbkvf(pfvf->pdev)) {
1434 		cmd->base.duplex = DUPLEX_FULL;
1435 		cmd->base.speed = SPEED_100000;
1436 	} else {
1437 		return otx2_get_link_ksettings(netdev, cmd);
1438 	}
1439 	return 0;
1440 }
1441 
1442 static const struct ethtool_ops otx2vf_ethtool_ops = {
1443 	.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1444 				     ETHTOOL_COALESCE_MAX_FRAMES |
1445 				     ETHTOOL_COALESCE_USE_ADAPTIVE,
1446 	.supported_ring_params  = ETHTOOL_RING_USE_RX_BUF_LEN |
1447 				  ETHTOOL_RING_USE_CQE_SIZE,
1448 	.get_link		= otx2_get_link,
1449 	.get_drvinfo		= otx2vf_get_drvinfo,
1450 	.get_strings		= otx2vf_get_strings,
1451 	.get_ethtool_stats	= otx2vf_get_ethtool_stats,
1452 	.get_sset_count		= otx2vf_get_sset_count,
1453 	.set_channels		= otx2_set_channels,
1454 	.get_channels		= otx2_get_channels,
1455 	.get_rxnfc		= otx2_get_rxnfc,
1456 	.set_rxnfc              = otx2_set_rxnfc,
1457 	.get_rxfh_key_size	= otx2_get_rxfh_key_size,
1458 	.get_rxfh_indir_size	= otx2_get_rxfh_indir_size,
1459 	.get_rxfh		= otx2_get_rxfh,
1460 	.set_rxfh		= otx2_set_rxfh,
1461 	.get_rxfh_context	= otx2_get_rxfh_context,
1462 	.set_rxfh_context	= otx2_set_rxfh_context,
1463 	.get_ringparam		= otx2_get_ringparam,
1464 	.set_ringparam		= otx2_set_ringparam,
1465 	.get_coalesce		= otx2_get_coalesce,
1466 	.set_coalesce		= otx2_set_coalesce,
1467 	.get_msglevel		= otx2_get_msglevel,
1468 	.set_msglevel		= otx2_set_msglevel,
1469 	.get_pauseparam		= otx2_get_pauseparam,
1470 	.set_pauseparam		= otx2_set_pauseparam,
1471 	.get_link_ksettings     = otx2vf_get_link_ksettings,
1472 	.get_ts_info		= otx2_get_ts_info,
1473 };
1474 
otx2vf_set_ethtool_ops(struct net_device * netdev)1475 void otx2vf_set_ethtool_ops(struct net_device *netdev)
1476 {
1477 	netdev->ethtool_ops = &otx2vf_ethtool_ops;
1478 }
1479 EXPORT_SYMBOL(otx2vf_set_ethtool_ops);
1480