1 /*
2 * AMD 10Gb Ethernet driver
3 *
4 * This file is available to you under your choice of the following two
5 * licenses:
6 *
7 * License 1: GPLv2
8 *
9 * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
10 *
11 * This file is free software; you may copy, redistribute and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 2 of the License, or (at
14 * your option) any later version.
15 *
16 * This file is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 *
24 * This file incorporates work covered by the following copyright and
25 * permission notice:
26 * The Synopsys DWC ETHER XGMAC Software Driver and documentation
27 * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
28 * Inc. unless otherwise expressly agreed to in writing between Synopsys
29 * and you.
30 *
31 * The Software IS NOT an item of Licensed Software or Licensed Product
32 * under any End User Software License Agreement or Agreement for Licensed
33 * Product with Synopsys or any supplement thereto. Permission is hereby
34 * granted, free of charge, to any person obtaining a copy of this software
35 * annotated with this license and the Software, to deal in the Software
36 * without restriction, including without limitation the rights to use,
37 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
38 * of the Software, and to permit persons to whom the Software is furnished
39 * to do so, subject to the following conditions:
40 *
41 * The above copyright notice and this permission notice shall be included
42 * in all copies or substantial portions of the Software.
43 *
44 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
45 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
46 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
47 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
48 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
49 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
50 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
51 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
52 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
54 * THE POSSIBILITY OF SUCH DAMAGE.
55 *
56 *
57 * License 2: Modified BSD
58 *
59 * Copyright (c) 2014-2016 Advanced Micro Devices, Inc.
60 * All rights reserved.
61 *
62 * Redistribution and use in source and binary forms, with or without
63 * modification, are permitted provided that the following conditions are met:
64 * * Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
66 * * Redistributions in binary form must reproduce the above copyright
67 * notice, this list of conditions and the following disclaimer in the
68 * documentation and/or other materials provided with the distribution.
69 * * Neither the name of Advanced Micro Devices, Inc. nor the
70 * names of its contributors may be used to endorse or promote products
71 * derived from this software without specific prior written permission.
72 *
73 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
74 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
75 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
76 * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
77 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
78 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
79 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
80 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
81 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
82 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
83 *
84 * This file incorporates work covered by the following copyright and
85 * permission notice:
86 * The Synopsys DWC ETHER XGMAC Software Driver and documentation
87 * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
88 * Inc. unless otherwise expressly agreed to in writing between Synopsys
89 * and you.
90 *
91 * The Software IS NOT an item of Licensed Software or Licensed Product
92 * under any End User Software License Agreement or Agreement for Licensed
93 * Product with Synopsys or any supplement thereto. Permission is hereby
94 * granted, free of charge, to any person obtaining a copy of this software
95 * annotated with this license and the Software, to deal in the Software
96 * without restriction, including without limitation the rights to use,
97 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
98 * of the Software, and to permit persons to whom the Software is furnished
99 * to do so, subject to the following conditions:
100 *
101 * The above copyright notice and this permission notice shall be included
102 * in all copies or substantial portions of the Software.
103 *
104 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
105 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
106 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
107 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
108 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
109 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
110 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
111 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
112 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
113 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
114 * THE POSSIBILITY OF SUCH DAMAGE.
115 */
116
117 #include <linux/spinlock.h>
118 #include <linux/phy.h>
119 #include <linux/net_tstamp.h>
120
121 #include "xgbe.h"
122 #include "xgbe-common.h"
123
124 struct xgbe_stats {
125 char stat_string[ETH_GSTRING_LEN];
126 int stat_size;
127 int stat_offset;
128 };
129
130 #define XGMAC_MMC_STAT(_string, _var) \
131 { _string, \
132 sizeof_field(struct xgbe_mmc_stats, _var), \
133 offsetof(struct xgbe_prv_data, mmc_stats._var), \
134 }
135
136 #define XGMAC_EXT_STAT(_string, _var) \
137 { _string, \
138 sizeof_field(struct xgbe_ext_stats, _var), \
139 offsetof(struct xgbe_prv_data, ext_stats._var), \
140 }
141
142 static const struct xgbe_stats xgbe_gstring_stats[] = {
143 XGMAC_MMC_STAT("tx_bytes", txoctetcount_gb),
144 XGMAC_MMC_STAT("tx_packets", txframecount_gb),
145 XGMAC_MMC_STAT("tx_unicast_packets", txunicastframes_gb),
146 XGMAC_MMC_STAT("tx_broadcast_packets", txbroadcastframes_gb),
147 XGMAC_MMC_STAT("tx_multicast_packets", txmulticastframes_gb),
148 XGMAC_MMC_STAT("tx_vlan_packets", txvlanframes_g),
149 XGMAC_EXT_STAT("tx_vxlan_packets", tx_vxlan_packets),
150 XGMAC_EXT_STAT("tx_tso_packets", tx_tso_packets),
151 XGMAC_MMC_STAT("tx_64_byte_packets", tx64octets_gb),
152 XGMAC_MMC_STAT("tx_65_to_127_byte_packets", tx65to127octets_gb),
153 XGMAC_MMC_STAT("tx_128_to_255_byte_packets", tx128to255octets_gb),
154 XGMAC_MMC_STAT("tx_256_to_511_byte_packets", tx256to511octets_gb),
155 XGMAC_MMC_STAT("tx_512_to_1023_byte_packets", tx512to1023octets_gb),
156 XGMAC_MMC_STAT("tx_1024_to_max_byte_packets", tx1024tomaxoctets_gb),
157 XGMAC_MMC_STAT("tx_underflow_errors", txunderflowerror),
158 XGMAC_MMC_STAT("tx_pause_frames", txpauseframes),
159
160 XGMAC_MMC_STAT("rx_bytes", rxoctetcount_gb),
161 XGMAC_MMC_STAT("rx_packets", rxframecount_gb),
162 XGMAC_MMC_STAT("rx_unicast_packets", rxunicastframes_g),
163 XGMAC_MMC_STAT("rx_broadcast_packets", rxbroadcastframes_g),
164 XGMAC_MMC_STAT("rx_multicast_packets", rxmulticastframes_g),
165 XGMAC_MMC_STAT("rx_vlan_packets", rxvlanframes_gb),
166 XGMAC_EXT_STAT("rx_vxlan_packets", rx_vxlan_packets),
167 XGMAC_MMC_STAT("rx_64_byte_packets", rx64octets_gb),
168 XGMAC_MMC_STAT("rx_65_to_127_byte_packets", rx65to127octets_gb),
169 XGMAC_MMC_STAT("rx_128_to_255_byte_packets", rx128to255octets_gb),
170 XGMAC_MMC_STAT("rx_256_to_511_byte_packets", rx256to511octets_gb),
171 XGMAC_MMC_STAT("rx_512_to_1023_byte_packets", rx512to1023octets_gb),
172 XGMAC_MMC_STAT("rx_1024_to_max_byte_packets", rx1024tomaxoctets_gb),
173 XGMAC_MMC_STAT("rx_undersize_packets", rxundersize_g),
174 XGMAC_MMC_STAT("rx_oversize_packets", rxoversize_g),
175 XGMAC_MMC_STAT("rx_crc_errors", rxcrcerror),
176 XGMAC_MMC_STAT("rx_crc_errors_small_packets", rxrunterror),
177 XGMAC_MMC_STAT("rx_crc_errors_giant_packets", rxjabbererror),
178 XGMAC_MMC_STAT("rx_length_errors", rxlengtherror),
179 XGMAC_MMC_STAT("rx_out_of_range_errors", rxoutofrangetype),
180 XGMAC_MMC_STAT("rx_fifo_overflow_errors", rxfifooverflow),
181 XGMAC_MMC_STAT("rx_watchdog_errors", rxwatchdogerror),
182 XGMAC_EXT_STAT("rx_csum_errors", rx_csum_errors),
183 XGMAC_EXT_STAT("rx_vxlan_csum_errors", rx_vxlan_csum_errors),
184 XGMAC_MMC_STAT("rx_pause_frames", rxpauseframes),
185 XGMAC_EXT_STAT("rx_split_header_packets", rx_split_header_packets),
186 XGMAC_EXT_STAT("rx_buffer_unavailable", rx_buffer_unavailable),
187 };
188
189 #define XGBE_STATS_COUNT ARRAY_SIZE(xgbe_gstring_stats)
190
xgbe_get_strings(struct net_device * netdev,u32 stringset,u8 * data)191 static void xgbe_get_strings(struct net_device *netdev, u32 stringset, u8 *data)
192 {
193 struct xgbe_prv_data *pdata = netdev_priv(netdev);
194 int i;
195
196 switch (stringset) {
197 case ETH_SS_STATS:
198 for (i = 0; i < XGBE_STATS_COUNT; i++) {
199 memcpy(data, xgbe_gstring_stats[i].stat_string,
200 ETH_GSTRING_LEN);
201 data += ETH_GSTRING_LEN;
202 }
203 for (i = 0; i < pdata->tx_ring_count; i++) {
204 sprintf(data, "txq_%u_packets", i);
205 data += ETH_GSTRING_LEN;
206 sprintf(data, "txq_%u_bytes", i);
207 data += ETH_GSTRING_LEN;
208 }
209 for (i = 0; i < pdata->rx_ring_count; i++) {
210 sprintf(data, "rxq_%u_packets", i);
211 data += ETH_GSTRING_LEN;
212 sprintf(data, "rxq_%u_bytes", i);
213 data += ETH_GSTRING_LEN;
214 }
215 break;
216 }
217 }
218
xgbe_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)219 static void xgbe_get_ethtool_stats(struct net_device *netdev,
220 struct ethtool_stats *stats, u64 *data)
221 {
222 struct xgbe_prv_data *pdata = netdev_priv(netdev);
223 u8 *stat;
224 int i;
225
226 pdata->hw_if.read_mmc_stats(pdata);
227 for (i = 0; i < XGBE_STATS_COUNT; i++) {
228 stat = (u8 *)pdata + xgbe_gstring_stats[i].stat_offset;
229 *data++ = *(u64 *)stat;
230 }
231 for (i = 0; i < pdata->tx_ring_count; i++) {
232 *data++ = pdata->ext_stats.txq_packets[i];
233 *data++ = pdata->ext_stats.txq_bytes[i];
234 }
235 for (i = 0; i < pdata->rx_ring_count; i++) {
236 *data++ = pdata->ext_stats.rxq_packets[i];
237 *data++ = pdata->ext_stats.rxq_bytes[i];
238 }
239 }
240
xgbe_get_sset_count(struct net_device * netdev,int stringset)241 static int xgbe_get_sset_count(struct net_device *netdev, int stringset)
242 {
243 struct xgbe_prv_data *pdata = netdev_priv(netdev);
244 int ret;
245
246 switch (stringset) {
247 case ETH_SS_STATS:
248 ret = XGBE_STATS_COUNT +
249 (pdata->tx_ring_count * 2) +
250 (pdata->rx_ring_count * 2);
251 break;
252
253 default:
254 ret = -EOPNOTSUPP;
255 }
256
257 return ret;
258 }
259
xgbe_get_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)260 static void xgbe_get_pauseparam(struct net_device *netdev,
261 struct ethtool_pauseparam *pause)
262 {
263 struct xgbe_prv_data *pdata = netdev_priv(netdev);
264
265 pause->autoneg = pdata->phy.pause_autoneg;
266 pause->tx_pause = pdata->phy.tx_pause;
267 pause->rx_pause = pdata->phy.rx_pause;
268 }
269
xgbe_set_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)270 static int xgbe_set_pauseparam(struct net_device *netdev,
271 struct ethtool_pauseparam *pause)
272 {
273 struct xgbe_prv_data *pdata = netdev_priv(netdev);
274 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
275 int ret = 0;
276
277 if (pause->autoneg && (pdata->phy.autoneg != AUTONEG_ENABLE)) {
278 netdev_err(netdev,
279 "autoneg disabled, pause autoneg not available\n");
280 return -EINVAL;
281 }
282
283 pdata->phy.pause_autoneg = pause->autoneg;
284 pdata->phy.tx_pause = pause->tx_pause;
285 pdata->phy.rx_pause = pause->rx_pause;
286
287 XGBE_CLR_ADV(lks, Pause);
288 XGBE_CLR_ADV(lks, Asym_Pause);
289
290 if (pause->rx_pause) {
291 XGBE_SET_ADV(lks, Pause);
292 XGBE_SET_ADV(lks, Asym_Pause);
293 }
294
295 if (pause->tx_pause) {
296 /* Equivalent to XOR of Asym_Pause */
297 if (XGBE_ADV(lks, Asym_Pause))
298 XGBE_CLR_ADV(lks, Asym_Pause);
299 else
300 XGBE_SET_ADV(lks, Asym_Pause);
301 }
302
303 if (netif_running(netdev))
304 ret = pdata->phy_if.phy_config_aneg(pdata);
305
306 return ret;
307 }
308
xgbe_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * cmd)309 static int xgbe_get_link_ksettings(struct net_device *netdev,
310 struct ethtool_link_ksettings *cmd)
311 {
312 struct xgbe_prv_data *pdata = netdev_priv(netdev);
313 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
314
315 cmd->base.phy_address = pdata->phy.address;
316
317 cmd->base.autoneg = pdata->phy.autoneg;
318 cmd->base.speed = pdata->phy.speed;
319 cmd->base.duplex = pdata->phy.duplex;
320
321 cmd->base.port = PORT_NONE;
322
323 XGBE_LM_COPY(cmd, supported, lks, supported);
324 XGBE_LM_COPY(cmd, advertising, lks, advertising);
325 XGBE_LM_COPY(cmd, lp_advertising, lks, lp_advertising);
326
327 return 0;
328 }
329
xgbe_set_link_ksettings(struct net_device * netdev,const struct ethtool_link_ksettings * cmd)330 static int xgbe_set_link_ksettings(struct net_device *netdev,
331 const struct ethtool_link_ksettings *cmd)
332 {
333 struct xgbe_prv_data *pdata = netdev_priv(netdev);
334 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
335 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
336 u32 speed;
337 int ret;
338
339 speed = cmd->base.speed;
340
341 if (cmd->base.phy_address != pdata->phy.address) {
342 netdev_err(netdev, "invalid phy address %hhu\n",
343 cmd->base.phy_address);
344 return -EINVAL;
345 }
346
347 if ((cmd->base.autoneg != AUTONEG_ENABLE) &&
348 (cmd->base.autoneg != AUTONEG_DISABLE)) {
349 netdev_err(netdev, "unsupported autoneg %hhu\n",
350 cmd->base.autoneg);
351 return -EINVAL;
352 }
353
354 if (cmd->base.autoneg == AUTONEG_DISABLE) {
355 if (!pdata->phy_if.phy_valid_speed(pdata, speed)) {
356 netdev_err(netdev, "unsupported speed %u\n", speed);
357 return -EINVAL;
358 }
359
360 if (cmd->base.duplex != DUPLEX_FULL) {
361 netdev_err(netdev, "unsupported duplex %hhu\n",
362 cmd->base.duplex);
363 return -EINVAL;
364 }
365 }
366
367 netif_dbg(pdata, link, netdev,
368 "requested advertisement 0x%*pb, phy supported 0x%*pb\n",
369 __ETHTOOL_LINK_MODE_MASK_NBITS, cmd->link_modes.advertising,
370 __ETHTOOL_LINK_MODE_MASK_NBITS, lks->link_modes.supported);
371
372 linkmode_and(advertising, cmd->link_modes.advertising,
373 lks->link_modes.supported);
374
375 if ((cmd->base.autoneg == AUTONEG_ENABLE) &&
376 bitmap_empty(advertising, __ETHTOOL_LINK_MODE_MASK_NBITS)) {
377 netdev_err(netdev,
378 "unsupported requested advertisement\n");
379 return -EINVAL;
380 }
381
382 ret = 0;
383 pdata->phy.autoneg = cmd->base.autoneg;
384 pdata->phy.speed = speed;
385 pdata->phy.duplex = cmd->base.duplex;
386 linkmode_copy(lks->link_modes.advertising, advertising);
387
388 if (cmd->base.autoneg == AUTONEG_ENABLE)
389 XGBE_SET_ADV(lks, Autoneg);
390 else
391 XGBE_CLR_ADV(lks, Autoneg);
392
393 if (netif_running(netdev))
394 ret = pdata->phy_if.phy_config_aneg(pdata);
395
396 return ret;
397 }
398
xgbe_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)399 static void xgbe_get_drvinfo(struct net_device *netdev,
400 struct ethtool_drvinfo *drvinfo)
401 {
402 struct xgbe_prv_data *pdata = netdev_priv(netdev);
403 struct xgbe_hw_features *hw_feat = &pdata->hw_feat;
404
405 strscpy(drvinfo->driver, XGBE_DRV_NAME, sizeof(drvinfo->driver));
406 strscpy(drvinfo->bus_info, dev_name(pdata->dev),
407 sizeof(drvinfo->bus_info));
408 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%d.%d.%d",
409 XGMAC_GET_BITS(hw_feat->version, MAC_VR, USERVER),
410 XGMAC_GET_BITS(hw_feat->version, MAC_VR, DEVID),
411 XGMAC_GET_BITS(hw_feat->version, MAC_VR, SNPSVER));
412 }
413
xgbe_get_msglevel(struct net_device * netdev)414 static u32 xgbe_get_msglevel(struct net_device *netdev)
415 {
416 struct xgbe_prv_data *pdata = netdev_priv(netdev);
417
418 return pdata->msg_enable;
419 }
420
xgbe_set_msglevel(struct net_device * netdev,u32 msglevel)421 static void xgbe_set_msglevel(struct net_device *netdev, u32 msglevel)
422 {
423 struct xgbe_prv_data *pdata = netdev_priv(netdev);
424
425 pdata->msg_enable = msglevel;
426 }
427
xgbe_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)428 static int xgbe_get_coalesce(struct net_device *netdev,
429 struct ethtool_coalesce *ec,
430 struct kernel_ethtool_coalesce *kernel_coal,
431 struct netlink_ext_ack *extack)
432 {
433 struct xgbe_prv_data *pdata = netdev_priv(netdev);
434
435 memset(ec, 0, sizeof(struct ethtool_coalesce));
436
437 ec->rx_coalesce_usecs = pdata->rx_usecs;
438 ec->rx_max_coalesced_frames = pdata->rx_frames;
439
440 ec->tx_max_coalesced_frames = pdata->tx_frames;
441
442 return 0;
443 }
444
xgbe_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)445 static int xgbe_set_coalesce(struct net_device *netdev,
446 struct ethtool_coalesce *ec,
447 struct kernel_ethtool_coalesce *kernel_coal,
448 struct netlink_ext_ack *extack)
449 {
450 struct xgbe_prv_data *pdata = netdev_priv(netdev);
451 struct xgbe_hw_if *hw_if = &pdata->hw_if;
452 unsigned int rx_frames, rx_riwt, rx_usecs;
453 unsigned int tx_frames;
454
455 rx_riwt = hw_if->usec_to_riwt(pdata, ec->rx_coalesce_usecs);
456 rx_usecs = ec->rx_coalesce_usecs;
457 rx_frames = ec->rx_max_coalesced_frames;
458
459 /* Use smallest possible value if conversion resulted in zero */
460 if (rx_usecs && !rx_riwt)
461 rx_riwt = 1;
462
463 /* Check the bounds of values for Rx */
464 if (rx_riwt > XGMAC_MAX_DMA_RIWT) {
465 netdev_err(netdev, "rx-usec is limited to %d usecs\n",
466 hw_if->riwt_to_usec(pdata, XGMAC_MAX_DMA_RIWT));
467 return -EINVAL;
468 }
469 if (rx_frames > pdata->rx_desc_count) {
470 netdev_err(netdev, "rx-frames is limited to %d frames\n",
471 pdata->rx_desc_count);
472 return -EINVAL;
473 }
474
475 tx_frames = ec->tx_max_coalesced_frames;
476
477 /* Check the bounds of values for Tx */
478 if (tx_frames > pdata->tx_desc_count) {
479 netdev_err(netdev, "tx-frames is limited to %d frames\n",
480 pdata->tx_desc_count);
481 return -EINVAL;
482 }
483
484 pdata->rx_riwt = rx_riwt;
485 pdata->rx_usecs = rx_usecs;
486 pdata->rx_frames = rx_frames;
487 hw_if->config_rx_coalesce(pdata);
488
489 pdata->tx_frames = tx_frames;
490 hw_if->config_tx_coalesce(pdata);
491
492 return 0;
493 }
494
xgbe_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * rxnfc,u32 * rule_locs)495 static int xgbe_get_rxnfc(struct net_device *netdev,
496 struct ethtool_rxnfc *rxnfc, u32 *rule_locs)
497 {
498 struct xgbe_prv_data *pdata = netdev_priv(netdev);
499
500 switch (rxnfc->cmd) {
501 case ETHTOOL_GRXRINGS:
502 rxnfc->data = pdata->rx_ring_count;
503 break;
504 default:
505 return -EOPNOTSUPP;
506 }
507
508 return 0;
509 }
510
xgbe_get_rxfh_key_size(struct net_device * netdev)511 static u32 xgbe_get_rxfh_key_size(struct net_device *netdev)
512 {
513 struct xgbe_prv_data *pdata = netdev_priv(netdev);
514
515 return sizeof(pdata->rss_key);
516 }
517
xgbe_get_rxfh_indir_size(struct net_device * netdev)518 static u32 xgbe_get_rxfh_indir_size(struct net_device *netdev)
519 {
520 struct xgbe_prv_data *pdata = netdev_priv(netdev);
521
522 return ARRAY_SIZE(pdata->rss_table);
523 }
524
xgbe_get_rxfh(struct net_device * netdev,u32 * indir,u8 * key,u8 * hfunc)525 static int xgbe_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
526 u8 *hfunc)
527 {
528 struct xgbe_prv_data *pdata = netdev_priv(netdev);
529 unsigned int i;
530
531 if (indir) {
532 for (i = 0; i < ARRAY_SIZE(pdata->rss_table); i++)
533 indir[i] = XGMAC_GET_BITS(pdata->rss_table[i],
534 MAC_RSSDR, DMCH);
535 }
536
537 if (key)
538 memcpy(key, pdata->rss_key, sizeof(pdata->rss_key));
539
540 if (hfunc)
541 *hfunc = ETH_RSS_HASH_TOP;
542
543 return 0;
544 }
545
xgbe_set_rxfh(struct net_device * netdev,const u32 * indir,const u8 * key,const u8 hfunc)546 static int xgbe_set_rxfh(struct net_device *netdev, const u32 *indir,
547 const u8 *key, const u8 hfunc)
548 {
549 struct xgbe_prv_data *pdata = netdev_priv(netdev);
550 struct xgbe_hw_if *hw_if = &pdata->hw_if;
551 unsigned int ret;
552
553 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP) {
554 netdev_err(netdev, "unsupported hash function\n");
555 return -EOPNOTSUPP;
556 }
557
558 if (indir) {
559 ret = hw_if->set_rss_lookup_table(pdata, indir);
560 if (ret)
561 return ret;
562 }
563
564 if (key) {
565 ret = hw_if->set_rss_hash_key(pdata, key);
566 if (ret)
567 return ret;
568 }
569
570 return 0;
571 }
572
xgbe_get_ts_info(struct net_device * netdev,struct ethtool_ts_info * ts_info)573 static int xgbe_get_ts_info(struct net_device *netdev,
574 struct ethtool_ts_info *ts_info)
575 {
576 struct xgbe_prv_data *pdata = netdev_priv(netdev);
577
578 ts_info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
579 SOF_TIMESTAMPING_RX_SOFTWARE |
580 SOF_TIMESTAMPING_SOFTWARE |
581 SOF_TIMESTAMPING_TX_HARDWARE |
582 SOF_TIMESTAMPING_RX_HARDWARE |
583 SOF_TIMESTAMPING_RAW_HARDWARE;
584
585 if (pdata->ptp_clock)
586 ts_info->phc_index = ptp_clock_index(pdata->ptp_clock);
587 else
588 ts_info->phc_index = -1;
589
590 ts_info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
591 ts_info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
592 (1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT) |
593 (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
594 (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
595 (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
596 (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
597 (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) |
598 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
599 (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
600 (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
601 (1 << HWTSTAMP_FILTER_ALL);
602
603 return 0;
604 }
605
xgbe_get_module_info(struct net_device * netdev,struct ethtool_modinfo * modinfo)606 static int xgbe_get_module_info(struct net_device *netdev,
607 struct ethtool_modinfo *modinfo)
608 {
609 struct xgbe_prv_data *pdata = netdev_priv(netdev);
610
611 return pdata->phy_if.module_info(pdata, modinfo);
612 }
613
xgbe_get_module_eeprom(struct net_device * netdev,struct ethtool_eeprom * eeprom,u8 * data)614 static int xgbe_get_module_eeprom(struct net_device *netdev,
615 struct ethtool_eeprom *eeprom, u8 *data)
616 {
617 struct xgbe_prv_data *pdata = netdev_priv(netdev);
618
619 return pdata->phy_if.module_eeprom(pdata, eeprom, data);
620 }
621
622 static void
xgbe_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ringparam,struct kernel_ethtool_ringparam * kernel_ringparam,struct netlink_ext_ack * extack)623 xgbe_get_ringparam(struct net_device *netdev,
624 struct ethtool_ringparam *ringparam,
625 struct kernel_ethtool_ringparam *kernel_ringparam,
626 struct netlink_ext_ack *extack)
627 {
628 struct xgbe_prv_data *pdata = netdev_priv(netdev);
629
630 ringparam->rx_max_pending = XGBE_RX_DESC_CNT_MAX;
631 ringparam->tx_max_pending = XGBE_TX_DESC_CNT_MAX;
632 ringparam->rx_pending = pdata->rx_desc_count;
633 ringparam->tx_pending = pdata->tx_desc_count;
634 }
635
xgbe_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ringparam,struct kernel_ethtool_ringparam * kernel_ringparam,struct netlink_ext_ack * extack)636 static int xgbe_set_ringparam(struct net_device *netdev,
637 struct ethtool_ringparam *ringparam,
638 struct kernel_ethtool_ringparam *kernel_ringparam,
639 struct netlink_ext_ack *extack)
640 {
641 struct xgbe_prv_data *pdata = netdev_priv(netdev);
642 unsigned int rx, tx;
643
644 if (ringparam->rx_mini_pending || ringparam->rx_jumbo_pending) {
645 netdev_err(netdev, "unsupported ring parameter\n");
646 return -EINVAL;
647 }
648
649 if ((ringparam->rx_pending < XGBE_RX_DESC_CNT_MIN) ||
650 (ringparam->rx_pending > XGBE_RX_DESC_CNT_MAX)) {
651 netdev_err(netdev,
652 "rx ring parameter must be between %u and %u\n",
653 XGBE_RX_DESC_CNT_MIN, XGBE_RX_DESC_CNT_MAX);
654 return -EINVAL;
655 }
656
657 if ((ringparam->tx_pending < XGBE_TX_DESC_CNT_MIN) ||
658 (ringparam->tx_pending > XGBE_TX_DESC_CNT_MAX)) {
659 netdev_err(netdev,
660 "tx ring parameter must be between %u and %u\n",
661 XGBE_TX_DESC_CNT_MIN, XGBE_TX_DESC_CNT_MAX);
662 return -EINVAL;
663 }
664
665 rx = __rounddown_pow_of_two(ringparam->rx_pending);
666 if (rx != ringparam->rx_pending)
667 netdev_notice(netdev,
668 "rx ring parameter rounded to power of two: %u\n",
669 rx);
670
671 tx = __rounddown_pow_of_two(ringparam->tx_pending);
672 if (tx != ringparam->tx_pending)
673 netdev_notice(netdev,
674 "tx ring parameter rounded to power of two: %u\n",
675 tx);
676
677 if ((rx == pdata->rx_desc_count) &&
678 (tx == pdata->tx_desc_count))
679 goto out;
680
681 pdata->rx_desc_count = rx;
682 pdata->tx_desc_count = tx;
683
684 xgbe_restart_dev(pdata);
685
686 out:
687 return 0;
688 }
689
xgbe_get_channels(struct net_device * netdev,struct ethtool_channels * channels)690 static void xgbe_get_channels(struct net_device *netdev,
691 struct ethtool_channels *channels)
692 {
693 struct xgbe_prv_data *pdata = netdev_priv(netdev);
694 unsigned int rx, tx, combined;
695
696 /* Calculate maximums allowed:
697 * - Take into account the number of available IRQs
698 * - Do not take into account the number of online CPUs so that
699 * the user can over-subscribe if desired
700 * - Tx is additionally limited by the number of hardware queues
701 */
702 rx = min(pdata->hw_feat.rx_ch_cnt, pdata->rx_max_channel_count);
703 rx = min(rx, pdata->channel_irq_count);
704 tx = min(pdata->hw_feat.tx_ch_cnt, pdata->tx_max_channel_count);
705 tx = min(tx, pdata->channel_irq_count);
706 tx = min(tx, pdata->tx_max_q_count);
707
708 combined = min(rx, tx);
709
710 channels->max_combined = combined;
711 channels->max_rx = rx ? rx - 1 : 0;
712 channels->max_tx = tx ? tx - 1 : 0;
713
714 /* Get current settings based on device state */
715 rx = pdata->new_rx_ring_count ? : pdata->rx_ring_count;
716 tx = pdata->new_tx_ring_count ? : pdata->tx_ring_count;
717
718 combined = min(rx, tx);
719 rx -= combined;
720 tx -= combined;
721
722 channels->combined_count = combined;
723 channels->rx_count = rx;
724 channels->tx_count = tx;
725 }
726
xgbe_print_set_channels_input(struct net_device * netdev,struct ethtool_channels * channels)727 static void xgbe_print_set_channels_input(struct net_device *netdev,
728 struct ethtool_channels *channels)
729 {
730 netdev_err(netdev, "channel inputs: combined=%u, rx-only=%u, tx-only=%u\n",
731 channels->combined_count, channels->rx_count,
732 channels->tx_count);
733 }
734
xgbe_set_channels(struct net_device * netdev,struct ethtool_channels * channels)735 static int xgbe_set_channels(struct net_device *netdev,
736 struct ethtool_channels *channels)
737 {
738 struct xgbe_prv_data *pdata = netdev_priv(netdev);
739 unsigned int rx, rx_curr, tx, tx_curr, combined;
740
741 /* Calculate maximums allowed:
742 * - Take into account the number of available IRQs
743 * - Do not take into account the number of online CPUs so that
744 * the user can over-subscribe if desired
745 * - Tx is additionally limited by the number of hardware queues
746 */
747 rx = min(pdata->hw_feat.rx_ch_cnt, pdata->rx_max_channel_count);
748 rx = min(rx, pdata->channel_irq_count);
749 tx = min(pdata->hw_feat.tx_ch_cnt, pdata->tx_max_channel_count);
750 tx = min(tx, pdata->tx_max_q_count);
751 tx = min(tx, pdata->channel_irq_count);
752
753 combined = min(rx, tx);
754
755 /* Should not be setting other count */
756 if (channels->other_count) {
757 netdev_err(netdev,
758 "other channel count must be zero\n");
759 return -EINVAL;
760 }
761
762 /* Require at least one Combined (Rx and Tx) channel */
763 if (!channels->combined_count) {
764 netdev_err(netdev,
765 "at least one combined Rx/Tx channel is required\n");
766 xgbe_print_set_channels_input(netdev, channels);
767 return -EINVAL;
768 }
769
770 /* Check combined channels */
771 if (channels->combined_count > combined) {
772 netdev_err(netdev,
773 "combined channel count cannot exceed %u\n",
774 combined);
775 xgbe_print_set_channels_input(netdev, channels);
776 return -EINVAL;
777 }
778
779 /* Can have some Rx-only or Tx-only channels, but not both */
780 if (channels->rx_count && channels->tx_count) {
781 netdev_err(netdev,
782 "cannot specify both Rx-only and Tx-only channels\n");
783 xgbe_print_set_channels_input(netdev, channels);
784 return -EINVAL;
785 }
786
787 /* Check that we don't exceed the maximum number of channels */
788 if ((channels->combined_count + channels->rx_count) > rx) {
789 netdev_err(netdev,
790 "total Rx channels (%u) requested exceeds maximum available (%u)\n",
791 channels->combined_count + channels->rx_count, rx);
792 xgbe_print_set_channels_input(netdev, channels);
793 return -EINVAL;
794 }
795
796 if ((channels->combined_count + channels->tx_count) > tx) {
797 netdev_err(netdev,
798 "total Tx channels (%u) requested exceeds maximum available (%u)\n",
799 channels->combined_count + channels->tx_count, tx);
800 xgbe_print_set_channels_input(netdev, channels);
801 return -EINVAL;
802 }
803
804 rx = channels->combined_count + channels->rx_count;
805 tx = channels->combined_count + channels->tx_count;
806
807 rx_curr = pdata->new_rx_ring_count ? : pdata->rx_ring_count;
808 tx_curr = pdata->new_tx_ring_count ? : pdata->tx_ring_count;
809
810 if ((rx == rx_curr) && (tx == tx_curr))
811 goto out;
812
813 pdata->new_rx_ring_count = rx;
814 pdata->new_tx_ring_count = tx;
815
816 xgbe_full_restart_dev(pdata);
817
818 out:
819 return 0;
820 }
821
822 static const struct ethtool_ops xgbe_ethtool_ops = {
823 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
824 ETHTOOL_COALESCE_MAX_FRAMES,
825 .get_drvinfo = xgbe_get_drvinfo,
826 .get_msglevel = xgbe_get_msglevel,
827 .set_msglevel = xgbe_set_msglevel,
828 .get_link = ethtool_op_get_link,
829 .get_coalesce = xgbe_get_coalesce,
830 .set_coalesce = xgbe_set_coalesce,
831 .get_pauseparam = xgbe_get_pauseparam,
832 .set_pauseparam = xgbe_set_pauseparam,
833 .get_strings = xgbe_get_strings,
834 .get_ethtool_stats = xgbe_get_ethtool_stats,
835 .get_sset_count = xgbe_get_sset_count,
836 .get_rxnfc = xgbe_get_rxnfc,
837 .get_rxfh_key_size = xgbe_get_rxfh_key_size,
838 .get_rxfh_indir_size = xgbe_get_rxfh_indir_size,
839 .get_rxfh = xgbe_get_rxfh,
840 .set_rxfh = xgbe_set_rxfh,
841 .get_ts_info = xgbe_get_ts_info,
842 .get_link_ksettings = xgbe_get_link_ksettings,
843 .set_link_ksettings = xgbe_set_link_ksettings,
844 .get_module_info = xgbe_get_module_info,
845 .get_module_eeprom = xgbe_get_module_eeprom,
846 .get_ringparam = xgbe_get_ringparam,
847 .set_ringparam = xgbe_set_ringparam,
848 .get_channels = xgbe_get_channels,
849 .set_channels = xgbe_set_channels,
850 };
851
xgbe_get_ethtool_ops(void)852 const struct ethtool_ops *xgbe_get_ethtool_ops(void)
853 {
854 return &xgbe_ethtool_ops;
855 }
856
