xref: /linux/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c (revision 3fd6c59042dbba50391e30862beac979491145fe)
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