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 ethtool_puts(&data, xgbe_gstring_stats[i].stat_string);
200
201 for (i = 0; i < pdata->tx_ring_count; i++) {
202 ethtool_sprintf(&data, "txq_%u_packets", i);
203 ethtool_sprintf(&data, "txq_%u_bytes", i);
204 }
205
206 for (i = 0; i < pdata->rx_ring_count; i++) {
207 ethtool_sprintf(&data, "rxq_%u_packets", i);
208 ethtool_sprintf(&data, "rxq_%u_bytes", i);
209 }
210
211 break;
212 }
213 }
214
xgbe_get_ethtool_stats(struct net_device * netdev,struct ethtool_stats * stats,u64 * data)215 static void xgbe_get_ethtool_stats(struct net_device *netdev,
216 struct ethtool_stats *stats, u64 *data)
217 {
218 struct xgbe_prv_data *pdata = netdev_priv(netdev);
219 u8 *stat;
220 int i;
221
222 pdata->hw_if.read_mmc_stats(pdata);
223 for (i = 0; i < XGBE_STATS_COUNT; i++) {
224 stat = (u8 *)pdata + xgbe_gstring_stats[i].stat_offset;
225 *data++ = *(u64 *)stat;
226 }
227 for (i = 0; i < pdata->tx_ring_count; i++) {
228 *data++ = pdata->ext_stats.txq_packets[i];
229 *data++ = pdata->ext_stats.txq_bytes[i];
230 }
231 for (i = 0; i < pdata->rx_ring_count; i++) {
232 *data++ = pdata->ext_stats.rxq_packets[i];
233 *data++ = pdata->ext_stats.rxq_bytes[i];
234 }
235 }
236
xgbe_get_sset_count(struct net_device * netdev,int stringset)237 static int xgbe_get_sset_count(struct net_device *netdev, int stringset)
238 {
239 struct xgbe_prv_data *pdata = netdev_priv(netdev);
240 int ret;
241
242 switch (stringset) {
243 case ETH_SS_STATS:
244 ret = XGBE_STATS_COUNT +
245 (pdata->tx_ring_count * 2) +
246 (pdata->rx_ring_count * 2);
247 break;
248
249 default:
250 ret = -EOPNOTSUPP;
251 }
252
253 return ret;
254 }
255
xgbe_get_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)256 static void xgbe_get_pauseparam(struct net_device *netdev,
257 struct ethtool_pauseparam *pause)
258 {
259 struct xgbe_prv_data *pdata = netdev_priv(netdev);
260
261 pause->autoneg = pdata->phy.pause_autoneg;
262 pause->tx_pause = pdata->phy.tx_pause;
263 pause->rx_pause = pdata->phy.rx_pause;
264 }
265
xgbe_set_pauseparam(struct net_device * netdev,struct ethtool_pauseparam * pause)266 static int xgbe_set_pauseparam(struct net_device *netdev,
267 struct ethtool_pauseparam *pause)
268 {
269 struct xgbe_prv_data *pdata = netdev_priv(netdev);
270 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
271 int ret = 0;
272
273 if (pause->autoneg && (pdata->phy.autoneg != AUTONEG_ENABLE)) {
274 netdev_err(netdev,
275 "autoneg disabled, pause autoneg not available\n");
276 return -EINVAL;
277 }
278
279 pdata->phy.pause_autoneg = pause->autoneg;
280 pdata->phy.tx_pause = pause->tx_pause;
281 pdata->phy.rx_pause = pause->rx_pause;
282
283 XGBE_CLR_ADV(lks, Pause);
284 XGBE_CLR_ADV(lks, Asym_Pause);
285
286 if (pause->rx_pause) {
287 XGBE_SET_ADV(lks, Pause);
288 XGBE_SET_ADV(lks, Asym_Pause);
289 }
290
291 if (pause->tx_pause) {
292 /* Equivalent to XOR of Asym_Pause */
293 if (XGBE_ADV(lks, Asym_Pause))
294 XGBE_CLR_ADV(lks, Asym_Pause);
295 else
296 XGBE_SET_ADV(lks, Asym_Pause);
297 }
298
299 if (netif_running(netdev))
300 ret = pdata->phy_if.phy_config_aneg(pdata);
301
302 return ret;
303 }
304
xgbe_get_link_ksettings(struct net_device * netdev,struct ethtool_link_ksettings * cmd)305 static int xgbe_get_link_ksettings(struct net_device *netdev,
306 struct ethtool_link_ksettings *cmd)
307 {
308 struct xgbe_prv_data *pdata = netdev_priv(netdev);
309 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
310
311 cmd->base.phy_address = pdata->phy.address;
312
313 if (netif_carrier_ok(netdev)) {
314 cmd->base.speed = pdata->phy.speed;
315 cmd->base.duplex = pdata->phy.duplex;
316 } else {
317 cmd->base.speed = SPEED_UNKNOWN;
318 cmd->base.duplex = DUPLEX_UNKNOWN;
319 }
320
321 cmd->base.autoneg = pdata->phy.autoneg;
322 cmd->base.port = PORT_NONE;
323
324 XGBE_LM_COPY(cmd, supported, lks, supported);
325 XGBE_LM_COPY(cmd, advertising, lks, advertising);
326 XGBE_LM_COPY(cmd, lp_advertising, lks, lp_advertising);
327
328 return 0;
329 }
330
xgbe_set_link_ksettings(struct net_device * netdev,const struct ethtool_link_ksettings * cmd)331 static int xgbe_set_link_ksettings(struct net_device *netdev,
332 const struct ethtool_link_ksettings *cmd)
333 {
334 struct xgbe_prv_data *pdata = netdev_priv(netdev);
335 struct ethtool_link_ksettings *lks = &pdata->phy.lks;
336 __ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);
337 u32 speed;
338 int ret;
339
340 speed = cmd->base.speed;
341
342 if (cmd->base.phy_address != pdata->phy.address) {
343 netdev_err(netdev, "invalid phy address %hhu\n",
344 cmd->base.phy_address);
345 return -EINVAL;
346 }
347
348 if ((cmd->base.autoneg != AUTONEG_ENABLE) &&
349 (cmd->base.autoneg != AUTONEG_DISABLE)) {
350 netdev_err(netdev, "unsupported autoneg %hhu\n",
351 cmd->base.autoneg);
352 return -EINVAL;
353 }
354
355 if (cmd->base.autoneg == AUTONEG_DISABLE) {
356 if (!pdata->phy_if.phy_valid_speed(pdata, speed)) {
357 netdev_err(netdev, "unsupported speed %u\n", speed);
358 return -EINVAL;
359 }
360
361 if (cmd->base.duplex != DUPLEX_FULL) {
362 netdev_err(netdev, "unsupported duplex %hhu\n",
363 cmd->base.duplex);
364 return -EINVAL;
365 }
366 }
367
368 netif_dbg(pdata, link, netdev,
369 "requested advertisement 0x%*pb, phy supported 0x%*pb\n",
370 __ETHTOOL_LINK_MODE_MASK_NBITS, cmd->link_modes.advertising,
371 __ETHTOOL_LINK_MODE_MASK_NBITS, lks->link_modes.supported);
372
373 linkmode_and(advertising, cmd->link_modes.advertising,
374 lks->link_modes.supported);
375
376 if ((cmd->base.autoneg == AUTONEG_ENABLE) &&
377 bitmap_empty(advertising, __ETHTOOL_LINK_MODE_MASK_NBITS)) {
378 netdev_err(netdev,
379 "unsupported requested advertisement\n");
380 return -EINVAL;
381 }
382
383 ret = 0;
384 pdata->phy.autoneg = cmd->base.autoneg;
385 pdata->phy.speed = speed;
386 pdata->phy.duplex = cmd->base.duplex;
387 linkmode_copy(lks->link_modes.advertising, advertising);
388
389 if (cmd->base.autoneg == AUTONEG_ENABLE)
390 XGBE_SET_ADV(lks, Autoneg);
391 else
392 XGBE_CLR_ADV(lks, Autoneg);
393
394 if (netif_running(netdev))
395 ret = pdata->phy_if.phy_config_aneg(pdata);
396
397 return ret;
398 }
399
xgbe_get_drvinfo(struct net_device * netdev,struct ethtool_drvinfo * drvinfo)400 static void xgbe_get_drvinfo(struct net_device *netdev,
401 struct ethtool_drvinfo *drvinfo)
402 {
403 struct xgbe_prv_data *pdata = netdev_priv(netdev);
404 struct xgbe_hw_features *hw_feat = &pdata->hw_feat;
405
406 strscpy(drvinfo->driver, XGBE_DRV_NAME, sizeof(drvinfo->driver));
407 strscpy(drvinfo->bus_info, dev_name(pdata->dev),
408 sizeof(drvinfo->bus_info));
409 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%d.%d.%d",
410 XGMAC_GET_BITS(hw_feat->version, MAC_VR, USERVER),
411 XGMAC_GET_BITS(hw_feat->version, MAC_VR, DEVID),
412 XGMAC_GET_BITS(hw_feat->version, MAC_VR, SNPSVER));
413 }
414
xgbe_get_msglevel(struct net_device * netdev)415 static u32 xgbe_get_msglevel(struct net_device *netdev)
416 {
417 struct xgbe_prv_data *pdata = netdev_priv(netdev);
418
419 return pdata->msg_enable;
420 }
421
xgbe_set_msglevel(struct net_device * netdev,u32 msglevel)422 static void xgbe_set_msglevel(struct net_device *netdev, u32 msglevel)
423 {
424 struct xgbe_prv_data *pdata = netdev_priv(netdev);
425
426 pdata->msg_enable = msglevel;
427 }
428
xgbe_get_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)429 static int xgbe_get_coalesce(struct net_device *netdev,
430 struct ethtool_coalesce *ec,
431 struct kernel_ethtool_coalesce *kernel_coal,
432 struct netlink_ext_ack *extack)
433 {
434 struct xgbe_prv_data *pdata = netdev_priv(netdev);
435
436 memset(ec, 0, sizeof(struct ethtool_coalesce));
437
438 ec->rx_coalesce_usecs = pdata->rx_usecs;
439 ec->rx_max_coalesced_frames = pdata->rx_frames;
440
441 ec->tx_max_coalesced_frames = pdata->tx_frames;
442
443 return 0;
444 }
445
xgbe_set_coalesce(struct net_device * netdev,struct ethtool_coalesce * ec,struct kernel_ethtool_coalesce * kernel_coal,struct netlink_ext_ack * extack)446 static int xgbe_set_coalesce(struct net_device *netdev,
447 struct ethtool_coalesce *ec,
448 struct kernel_ethtool_coalesce *kernel_coal,
449 struct netlink_ext_ack *extack)
450 {
451 struct xgbe_prv_data *pdata = netdev_priv(netdev);
452 struct xgbe_hw_if *hw_if = &pdata->hw_if;
453 unsigned int rx_frames, rx_riwt, rx_usecs;
454 unsigned int tx_frames;
455
456 rx_riwt = hw_if->usec_to_riwt(pdata, ec->rx_coalesce_usecs);
457 rx_usecs = ec->rx_coalesce_usecs;
458 rx_frames = ec->rx_max_coalesced_frames;
459
460 /* Use smallest possible value if conversion resulted in zero */
461 if (rx_usecs && !rx_riwt)
462 rx_riwt = 1;
463
464 /* Check the bounds of values for Rx */
465 if (rx_riwt > XGMAC_MAX_DMA_RIWT) {
466 netdev_err(netdev, "rx-usec is limited to %d usecs\n",
467 hw_if->riwt_to_usec(pdata, XGMAC_MAX_DMA_RIWT));
468 return -EINVAL;
469 }
470 if (rx_frames > pdata->rx_desc_count) {
471 netdev_err(netdev, "rx-frames is limited to %d frames\n",
472 pdata->rx_desc_count);
473 return -EINVAL;
474 }
475
476 tx_frames = ec->tx_max_coalesced_frames;
477
478 /* Check the bounds of values for Tx */
479 if (tx_frames > pdata->tx_desc_count) {
480 netdev_err(netdev, "tx-frames is limited to %d frames\n",
481 pdata->tx_desc_count);
482 return -EINVAL;
483 }
484
485 pdata->rx_riwt = rx_riwt;
486 pdata->rx_usecs = rx_usecs;
487 pdata->rx_frames = rx_frames;
488 hw_if->config_rx_coalesce(pdata);
489
490 pdata->tx_frames = tx_frames;
491 hw_if->config_tx_coalesce(pdata);
492
493 return 0;
494 }
495
xgbe_get_rxnfc(struct net_device * netdev,struct ethtool_rxnfc * rxnfc,u32 * rule_locs)496 static int xgbe_get_rxnfc(struct net_device *netdev,
497 struct ethtool_rxnfc *rxnfc, u32 *rule_locs)
498 {
499 struct xgbe_prv_data *pdata = netdev_priv(netdev);
500
501 switch (rxnfc->cmd) {
502 case ETHTOOL_GRXRINGS:
503 rxnfc->data = pdata->rx_ring_count;
504 break;
505 default:
506 return -EOPNOTSUPP;
507 }
508
509 return 0;
510 }
511
xgbe_get_rxfh_key_size(struct net_device * netdev)512 static u32 xgbe_get_rxfh_key_size(struct net_device *netdev)
513 {
514 struct xgbe_prv_data *pdata = netdev_priv(netdev);
515
516 return sizeof(pdata->rss_key);
517 }
518
xgbe_get_rxfh_indir_size(struct net_device * netdev)519 static u32 xgbe_get_rxfh_indir_size(struct net_device *netdev)
520 {
521 struct xgbe_prv_data *pdata = netdev_priv(netdev);
522
523 return ARRAY_SIZE(pdata->rss_table);
524 }
525
xgbe_get_rxfh(struct net_device * netdev,struct ethtool_rxfh_param * rxfh)526 static int xgbe_get_rxfh(struct net_device *netdev,
527 struct ethtool_rxfh_param *rxfh)
528 {
529 struct xgbe_prv_data *pdata = netdev_priv(netdev);
530 unsigned int i;
531
532 if (rxfh->indir) {
533 for (i = 0; i < ARRAY_SIZE(pdata->rss_table); i++)
534 rxfh->indir[i] = XGMAC_GET_BITS(pdata->rss_table[i],
535 MAC_RSSDR, DMCH);
536 }
537
538 if (rxfh->key)
539 memcpy(rxfh->key, pdata->rss_key, sizeof(pdata->rss_key));
540
541 rxfh->hfunc = ETH_RSS_HASH_TOP;
542
543 return 0;
544 }
545
xgbe_set_rxfh(struct net_device * netdev,struct ethtool_rxfh_param * rxfh,struct netlink_ext_ack * extack)546 static int xgbe_set_rxfh(struct net_device *netdev,
547 struct ethtool_rxfh_param *rxfh,
548 struct netlink_ext_ack *extack)
549 {
550 struct xgbe_prv_data *pdata = netdev_priv(netdev);
551 struct xgbe_hw_if *hw_if = &pdata->hw_if;
552 unsigned int ret;
553
554 if (rxfh->hfunc != ETH_RSS_HASH_NO_CHANGE &&
555 rxfh->hfunc != ETH_RSS_HASH_TOP) {
556 netdev_err(netdev, "unsupported hash function\n");
557 return -EOPNOTSUPP;
558 }
559
560 if (rxfh->indir) {
561 ret = hw_if->set_rss_lookup_table(pdata, rxfh->indir);
562 if (ret)
563 return ret;
564 }
565
566 if (rxfh->key) {
567 ret = hw_if->set_rss_hash_key(pdata, rxfh->key);
568 if (ret)
569 return ret;
570 }
571
572 return 0;
573 }
574
xgbe_get_ts_info(struct net_device * netdev,struct kernel_ethtool_ts_info * ts_info)575 static int xgbe_get_ts_info(struct net_device *netdev,
576 struct kernel_ethtool_ts_info *ts_info)
577 {
578 struct xgbe_prv_data *pdata = netdev_priv(netdev);
579
580 ts_info->so_timestamping = SOF_TIMESTAMPING_TX_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
588 ts_info->tx_types = (1 << HWTSTAMP_TX_OFF) | (1 << HWTSTAMP_TX_ON);
589 ts_info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
590 (1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT) |
591 (1 << HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
592 (1 << HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
593 (1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
594 (1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
595 (1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) |
596 (1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
597 (1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
598 (1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
599 (1 << HWTSTAMP_FILTER_ALL);
600
601 return 0;
602 }
603
xgbe_get_module_info(struct net_device * netdev,struct ethtool_modinfo * modinfo)604 static int xgbe_get_module_info(struct net_device *netdev,
605 struct ethtool_modinfo *modinfo)
606 {
607 struct xgbe_prv_data *pdata = netdev_priv(netdev);
608
609 return pdata->phy_if.module_info(pdata, modinfo);
610 }
611
xgbe_get_module_eeprom(struct net_device * netdev,struct ethtool_eeprom * eeprom,u8 * data)612 static int xgbe_get_module_eeprom(struct net_device *netdev,
613 struct ethtool_eeprom *eeprom, u8 *data)
614 {
615 struct xgbe_prv_data *pdata = netdev_priv(netdev);
616
617 return pdata->phy_if.module_eeprom(pdata, eeprom, data);
618 }
619
620 static void
xgbe_get_ringparam(struct net_device * netdev,struct ethtool_ringparam * ringparam,struct kernel_ethtool_ringparam * kernel_ringparam,struct netlink_ext_ack * extack)621 xgbe_get_ringparam(struct net_device *netdev,
622 struct ethtool_ringparam *ringparam,
623 struct kernel_ethtool_ringparam *kernel_ringparam,
624 struct netlink_ext_ack *extack)
625 {
626 struct xgbe_prv_data *pdata = netdev_priv(netdev);
627
628 ringparam->rx_max_pending = XGBE_RX_DESC_CNT_MAX;
629 ringparam->tx_max_pending = XGBE_TX_DESC_CNT_MAX;
630 ringparam->rx_pending = pdata->rx_desc_count;
631 ringparam->tx_pending = pdata->tx_desc_count;
632 }
633
xgbe_set_ringparam(struct net_device * netdev,struct ethtool_ringparam * ringparam,struct kernel_ethtool_ringparam * kernel_ringparam,struct netlink_ext_ack * extack)634 static int xgbe_set_ringparam(struct net_device *netdev,
635 struct ethtool_ringparam *ringparam,
636 struct kernel_ethtool_ringparam *kernel_ringparam,
637 struct netlink_ext_ack *extack)
638 {
639 struct xgbe_prv_data *pdata = netdev_priv(netdev);
640 unsigned int rx, tx;
641
642 if (ringparam->rx_mini_pending || ringparam->rx_jumbo_pending) {
643 netdev_err(netdev, "unsupported ring parameter\n");
644 return -EINVAL;
645 }
646
647 if ((ringparam->rx_pending < XGBE_RX_DESC_CNT_MIN) ||
648 (ringparam->rx_pending > XGBE_RX_DESC_CNT_MAX)) {
649 netdev_err(netdev,
650 "rx ring parameter must be between %u and %u\n",
651 XGBE_RX_DESC_CNT_MIN, XGBE_RX_DESC_CNT_MAX);
652 return -EINVAL;
653 }
654
655 if ((ringparam->tx_pending < XGBE_TX_DESC_CNT_MIN) ||
656 (ringparam->tx_pending > XGBE_TX_DESC_CNT_MAX)) {
657 netdev_err(netdev,
658 "tx ring parameter must be between %u and %u\n",
659 XGBE_TX_DESC_CNT_MIN, XGBE_TX_DESC_CNT_MAX);
660 return -EINVAL;
661 }
662
663 rx = __rounddown_pow_of_two(ringparam->rx_pending);
664 if (rx != ringparam->rx_pending)
665 netdev_notice(netdev,
666 "rx ring parameter rounded to power of two: %u\n",
667 rx);
668
669 tx = __rounddown_pow_of_two(ringparam->tx_pending);
670 if (tx != ringparam->tx_pending)
671 netdev_notice(netdev,
672 "tx ring parameter rounded to power of two: %u\n",
673 tx);
674
675 if ((rx == pdata->rx_desc_count) &&
676 (tx == pdata->tx_desc_count))
677 goto out;
678
679 pdata->rx_desc_count = rx;
680 pdata->tx_desc_count = tx;
681
682 xgbe_restart_dev(pdata);
683
684 out:
685 return 0;
686 }
687
xgbe_get_channels(struct net_device * netdev,struct ethtool_channels * channels)688 static void xgbe_get_channels(struct net_device *netdev,
689 struct ethtool_channels *channels)
690 {
691 struct xgbe_prv_data *pdata = netdev_priv(netdev);
692 unsigned int rx, tx, combined;
693
694 /* Calculate maximums allowed:
695 * - Take into account the number of available IRQs
696 * - Do not take into account the number of online CPUs so that
697 * the user can over-subscribe if desired
698 * - Tx is additionally limited by the number of hardware queues
699 */
700 rx = min(pdata->hw_feat.rx_ch_cnt, pdata->rx_max_channel_count);
701 rx = min(rx, pdata->channel_irq_count);
702 tx = min(pdata->hw_feat.tx_ch_cnt, pdata->tx_max_channel_count);
703 tx = min(tx, pdata->channel_irq_count);
704 tx = min(tx, pdata->tx_max_q_count);
705
706 combined = min(rx, tx);
707
708 channels->max_combined = combined;
709 channels->max_rx = rx ? rx - 1 : 0;
710 channels->max_tx = tx ? tx - 1 : 0;
711
712 /* Get current settings based on device state */
713 rx = pdata->new_rx_ring_count ? : pdata->rx_ring_count;
714 tx = pdata->new_tx_ring_count ? : pdata->tx_ring_count;
715
716 combined = min(rx, tx);
717 rx -= combined;
718 tx -= combined;
719
720 channels->combined_count = combined;
721 channels->rx_count = rx;
722 channels->tx_count = tx;
723 }
724
xgbe_print_set_channels_input(struct net_device * netdev,struct ethtool_channels * channels)725 static void xgbe_print_set_channels_input(struct net_device *netdev,
726 struct ethtool_channels *channels)
727 {
728 netdev_err(netdev, "channel inputs: combined=%u, rx-only=%u, tx-only=%u\n",
729 channels->combined_count, channels->rx_count,
730 channels->tx_count);
731 }
732
xgbe_set_channels(struct net_device * netdev,struct ethtool_channels * channels)733 static int xgbe_set_channels(struct net_device *netdev,
734 struct ethtool_channels *channels)
735 {
736 struct xgbe_prv_data *pdata = netdev_priv(netdev);
737 unsigned int rx, rx_curr, tx, tx_curr, combined;
738
739 /* Calculate maximums allowed:
740 * - Take into account the number of available IRQs
741 * - Do not take into account the number of online CPUs so that
742 * the user can over-subscribe if desired
743 * - Tx is additionally limited by the number of hardware queues
744 */
745 rx = min(pdata->hw_feat.rx_ch_cnt, pdata->rx_max_channel_count);
746 rx = min(rx, pdata->channel_irq_count);
747 tx = min(pdata->hw_feat.tx_ch_cnt, pdata->tx_max_channel_count);
748 tx = min(tx, pdata->tx_max_q_count);
749 tx = min(tx, pdata->channel_irq_count);
750
751 combined = min(rx, tx);
752
753 /* Should not be setting other count */
754 if (channels->other_count) {
755 netdev_err(netdev,
756 "other channel count must be zero\n");
757 return -EINVAL;
758 }
759
760 /* Require at least one Combined (Rx and Tx) channel */
761 if (!channels->combined_count) {
762 netdev_err(netdev,
763 "at least one combined Rx/Tx channel is required\n");
764 xgbe_print_set_channels_input(netdev, channels);
765 return -EINVAL;
766 }
767
768 /* Check combined channels */
769 if (channels->combined_count > combined) {
770 netdev_err(netdev,
771 "combined channel count cannot exceed %u\n",
772 combined);
773 xgbe_print_set_channels_input(netdev, channels);
774 return -EINVAL;
775 }
776
777 /* Can have some Rx-only or Tx-only channels, but not both */
778 if (channels->rx_count && channels->tx_count) {
779 netdev_err(netdev,
780 "cannot specify both Rx-only and Tx-only channels\n");
781 xgbe_print_set_channels_input(netdev, channels);
782 return -EINVAL;
783 }
784
785 /* Check that we don't exceed the maximum number of channels */
786 if ((channels->combined_count + channels->rx_count) > rx) {
787 netdev_err(netdev,
788 "total Rx channels (%u) requested exceeds maximum available (%u)\n",
789 channels->combined_count + channels->rx_count, rx);
790 xgbe_print_set_channels_input(netdev, channels);
791 return -EINVAL;
792 }
793
794 if ((channels->combined_count + channels->tx_count) > tx) {
795 netdev_err(netdev,
796 "total Tx channels (%u) requested exceeds maximum available (%u)\n",
797 channels->combined_count + channels->tx_count, tx);
798 xgbe_print_set_channels_input(netdev, channels);
799 return -EINVAL;
800 }
801
802 rx = channels->combined_count + channels->rx_count;
803 tx = channels->combined_count + channels->tx_count;
804
805 rx_curr = pdata->new_rx_ring_count ? : pdata->rx_ring_count;
806 tx_curr = pdata->new_tx_ring_count ? : pdata->tx_ring_count;
807
808 if ((rx == rx_curr) && (tx == tx_curr))
809 goto out;
810
811 pdata->new_rx_ring_count = rx;
812 pdata->new_tx_ring_count = tx;
813
814 xgbe_full_restart_dev(pdata);
815
816 out:
817 return 0;
818 }
819
820 static const struct ethtool_ops xgbe_ethtool_ops = {
821 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS |
822 ETHTOOL_COALESCE_MAX_FRAMES,
823 .get_drvinfo = xgbe_get_drvinfo,
824 .get_msglevel = xgbe_get_msglevel,
825 .set_msglevel = xgbe_set_msglevel,
826 .get_link = ethtool_op_get_link,
827 .get_coalesce = xgbe_get_coalesce,
828 .set_coalesce = xgbe_set_coalesce,
829 .get_pauseparam = xgbe_get_pauseparam,
830 .set_pauseparam = xgbe_set_pauseparam,
831 .get_strings = xgbe_get_strings,
832 .get_ethtool_stats = xgbe_get_ethtool_stats,
833 .get_sset_count = xgbe_get_sset_count,
834 .get_rxnfc = xgbe_get_rxnfc,
835 .get_rxfh_key_size = xgbe_get_rxfh_key_size,
836 .get_rxfh_indir_size = xgbe_get_rxfh_indir_size,
837 .get_rxfh = xgbe_get_rxfh,
838 .set_rxfh = xgbe_set_rxfh,
839 .get_ts_info = xgbe_get_ts_info,
840 .get_link_ksettings = xgbe_get_link_ksettings,
841 .set_link_ksettings = xgbe_set_link_ksettings,
842 .get_module_info = xgbe_get_module_info,
843 .get_module_eeprom = xgbe_get_module_eeprom,
844 .get_ringparam = xgbe_get_ringparam,
845 .set_ringparam = xgbe_set_ringparam,
846 .get_channels = xgbe_get_channels,
847 .set_channels = xgbe_set_channels,
848 };
849
xgbe_get_ethtool_ops(void)850 const struct ethtool_ops *xgbe_get_ethtool_ops(void)
851 {
852 return &xgbe_ethtool_ops;
853 }
854