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c5aa9e3b LT |
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 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 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 | ||
120 | #include "xgbe.h" | |
121 | #include "xgbe-common.h" | |
122 | ||
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 | FIELD_SIZEOF(struct xgbe_mmc_stats, _var), \ | |
133 | offsetof(struct xgbe_prv_data, mmc_stats._var), \ | |
134 | } | |
135 | ||
136 | static const struct xgbe_stats xgbe_gstring_stats[] = { | |
137 | XGMAC_MMC_STAT("tx_bytes", txoctetcount_gb), | |
138 | XGMAC_MMC_STAT("tx_packets", txframecount_gb), | |
139 | XGMAC_MMC_STAT("tx_unicast_packets", txunicastframes_gb), | |
140 | XGMAC_MMC_STAT("tx_broadcast_packets", txbroadcastframes_gb), | |
141 | XGMAC_MMC_STAT("tx_multicast_packets", txmulticastframes_gb), | |
142 | XGMAC_MMC_STAT("tx_vlan_packets", txvlanframes_g), | |
143 | XGMAC_MMC_STAT("tx_64_byte_packets", tx64octets_gb), | |
144 | XGMAC_MMC_STAT("tx_65_to_127_byte_packets", tx65to127octets_gb), | |
145 | XGMAC_MMC_STAT("tx_128_to_255_byte_packets", tx128to255octets_gb), | |
146 | XGMAC_MMC_STAT("tx_256_to_511_byte_packets", tx256to511octets_gb), | |
147 | XGMAC_MMC_STAT("tx_512_to_1023_byte_packets", tx512to1023octets_gb), | |
148 | XGMAC_MMC_STAT("tx_1024_to_max_byte_packets", tx1024tomaxoctets_gb), | |
149 | XGMAC_MMC_STAT("tx_underflow_errors", txunderflowerror), | |
150 | XGMAC_MMC_STAT("tx_pause_frames", txpauseframes), | |
151 | ||
152 | XGMAC_MMC_STAT("rx_bytes", rxoctetcount_gb), | |
153 | XGMAC_MMC_STAT("rx_packets", rxframecount_gb), | |
154 | XGMAC_MMC_STAT("rx_unicast_packets", rxunicastframes_g), | |
155 | XGMAC_MMC_STAT("rx_broadcast_packets", rxbroadcastframes_g), | |
156 | XGMAC_MMC_STAT("rx_multicast_packets", rxmulticastframes_g), | |
157 | XGMAC_MMC_STAT("rx_vlan_packets", rxvlanframes_gb), | |
158 | XGMAC_MMC_STAT("rx_64_byte_packets", rx64octets_gb), | |
159 | XGMAC_MMC_STAT("rx_65_to_127_byte_packets", rx65to127octets_gb), | |
160 | XGMAC_MMC_STAT("rx_128_to_255_byte_packets", rx128to255octets_gb), | |
161 | XGMAC_MMC_STAT("rx_256_to_511_byte_packets", rx256to511octets_gb), | |
162 | XGMAC_MMC_STAT("rx_512_to_1023_byte_packets", rx512to1023octets_gb), | |
163 | XGMAC_MMC_STAT("rx_1024_to_max_byte_packets", rx1024tomaxoctets_gb), | |
164 | XGMAC_MMC_STAT("rx_undersize_packets", rxundersize_g), | |
165 | XGMAC_MMC_STAT("rx_oversize_packets", rxoversize_g), | |
166 | XGMAC_MMC_STAT("rx_crc_errors", rxcrcerror), | |
167 | XGMAC_MMC_STAT("rx_crc_errors_small_packets", rxrunterror), | |
168 | XGMAC_MMC_STAT("rx_crc_errors_giant_packets", rxjabbererror), | |
169 | XGMAC_MMC_STAT("rx_length_errors", rxlengtherror), | |
170 | XGMAC_MMC_STAT("rx_out_of_range_errors", rxoutofrangetype), | |
171 | XGMAC_MMC_STAT("rx_fifo_overflow_errors", rxfifooverflow), | |
172 | XGMAC_MMC_STAT("rx_watchdog_errors", rxwatchdogerror), | |
173 | XGMAC_MMC_STAT("rx_pause_frames", rxpauseframes), | |
174 | }; | |
175 | #define XGBE_STATS_COUNT ARRAY_SIZE(xgbe_gstring_stats) | |
176 | ||
177 | static void xgbe_get_strings(struct net_device *netdev, u32 stringset, u8 *data) | |
178 | { | |
179 | int i; | |
180 | ||
181 | DBGPR("-->%s\n", __func__); | |
182 | ||
183 | switch (stringset) { | |
184 | case ETH_SS_STATS: | |
185 | for (i = 0; i < XGBE_STATS_COUNT; i++) { | |
186 | memcpy(data, xgbe_gstring_stats[i].stat_string, | |
187 | ETH_GSTRING_LEN); | |
188 | data += ETH_GSTRING_LEN; | |
189 | } | |
190 | break; | |
191 | } | |
192 | ||
193 | DBGPR("<--%s\n", __func__); | |
194 | } | |
195 | ||
196 | static void xgbe_get_ethtool_stats(struct net_device *netdev, | |
197 | struct ethtool_stats *stats, u64 *data) | |
198 | { | |
199 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
200 | u8 *stat; | |
201 | int i; | |
202 | ||
203 | DBGPR("-->%s\n", __func__); | |
204 | ||
205 | pdata->hw_if.read_mmc_stats(pdata); | |
206 | for (i = 0; i < XGBE_STATS_COUNT; i++) { | |
207 | stat = (u8 *)pdata + xgbe_gstring_stats[i].stat_offset; | |
208 | *data++ = *(u64 *)stat; | |
209 | } | |
210 | ||
211 | DBGPR("<--%s\n", __func__); | |
212 | } | |
213 | ||
214 | static int xgbe_get_sset_count(struct net_device *netdev, int stringset) | |
215 | { | |
216 | int ret; | |
217 | ||
218 | DBGPR("-->%s\n", __func__); | |
219 | ||
220 | switch (stringset) { | |
221 | case ETH_SS_STATS: | |
222 | ret = XGBE_STATS_COUNT; | |
223 | break; | |
224 | ||
225 | default: | |
226 | ret = -EOPNOTSUPP; | |
227 | } | |
228 | ||
229 | DBGPR("<--%s\n", __func__); | |
230 | ||
231 | return ret; | |
232 | } | |
233 | ||
234 | static void xgbe_get_pauseparam(struct net_device *netdev, | |
235 | struct ethtool_pauseparam *pause) | |
236 | { | |
237 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
238 | ||
239 | DBGPR("-->xgbe_get_pauseparam\n"); | |
240 | ||
241 | pause->autoneg = pdata->pause_autoneg; | |
242 | pause->tx_pause = pdata->tx_pause; | |
243 | pause->rx_pause = pdata->rx_pause; | |
244 | ||
245 | DBGPR("<--xgbe_get_pauseparam\n"); | |
246 | } | |
247 | ||
248 | static int xgbe_set_pauseparam(struct net_device *netdev, | |
249 | struct ethtool_pauseparam *pause) | |
250 | { | |
251 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
252 | struct phy_device *phydev = pdata->phydev; | |
253 | int ret = 0; | |
254 | ||
255 | DBGPR("-->xgbe_set_pauseparam\n"); | |
256 | ||
257 | DBGPR(" autoneg = %d, tx_pause = %d, rx_pause = %d\n", | |
258 | pause->autoneg, pause->tx_pause, pause->rx_pause); | |
259 | ||
260 | pdata->pause_autoneg = pause->autoneg; | |
261 | if (pause->autoneg) { | |
262 | phydev->advertising |= ADVERTISED_Pause; | |
263 | phydev->advertising |= ADVERTISED_Asym_Pause; | |
264 | ||
265 | } else { | |
266 | phydev->advertising &= ~ADVERTISED_Pause; | |
267 | phydev->advertising &= ~ADVERTISED_Asym_Pause; | |
268 | ||
269 | pdata->tx_pause = pause->tx_pause; | |
270 | pdata->rx_pause = pause->rx_pause; | |
271 | } | |
272 | ||
273 | if (netif_running(netdev)) | |
274 | ret = phy_start_aneg(phydev); | |
275 | ||
276 | DBGPR("<--xgbe_set_pauseparam\n"); | |
277 | ||
278 | return ret; | |
279 | } | |
280 | ||
281 | static int xgbe_get_settings(struct net_device *netdev, | |
282 | struct ethtool_cmd *cmd) | |
283 | { | |
284 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
285 | int ret; | |
286 | ||
287 | DBGPR("-->xgbe_get_settings\n"); | |
288 | ||
289 | if (!pdata->phydev) | |
290 | return -ENODEV; | |
291 | ||
292 | spin_lock_irq(&pdata->lock); | |
293 | ||
294 | ret = phy_ethtool_gset(pdata->phydev, cmd); | |
295 | cmd->transceiver = XCVR_EXTERNAL; | |
296 | ||
297 | spin_unlock_irq(&pdata->lock); | |
298 | ||
299 | DBGPR("<--xgbe_get_settings\n"); | |
300 | ||
301 | return ret; | |
302 | } | |
303 | ||
304 | static int xgbe_set_settings(struct net_device *netdev, | |
305 | struct ethtool_cmd *cmd) | |
306 | { | |
307 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
308 | struct phy_device *phydev = pdata->phydev; | |
309 | u32 speed; | |
310 | int ret; | |
311 | ||
312 | DBGPR("-->xgbe_set_settings\n"); | |
313 | ||
314 | if (!pdata->phydev) | |
315 | return -ENODEV; | |
316 | ||
317 | spin_lock_irq(&pdata->lock); | |
318 | ||
319 | speed = ethtool_cmd_speed(cmd); | |
320 | ||
321 | ret = -EINVAL; | |
322 | if (cmd->phy_address != phydev->addr) | |
323 | goto unlock; | |
324 | ||
325 | if ((cmd->autoneg != AUTONEG_ENABLE) && | |
326 | (cmd->autoneg != AUTONEG_DISABLE)) | |
327 | goto unlock; | |
328 | ||
329 | if ((cmd->autoneg == AUTONEG_DISABLE) && | |
330 | (((speed != SPEED_10000) && (speed != SPEED_1000)) || | |
331 | (cmd->duplex != DUPLEX_FULL))) | |
332 | goto unlock; | |
333 | ||
c5aa9e3b LT |
334 | cmd->advertising &= phydev->supported; |
335 | if ((cmd->autoneg == AUTONEG_ENABLE) && !cmd->advertising) | |
336 | goto unlock; | |
337 | ||
338 | ret = 0; | |
339 | phydev->autoneg = cmd->autoneg; | |
340 | phydev->speed = speed; | |
341 | phydev->duplex = cmd->duplex; | |
342 | phydev->advertising = cmd->advertising; | |
343 | ||
344 | if (cmd->autoneg == AUTONEG_ENABLE) | |
345 | phydev->advertising |= ADVERTISED_Autoneg; | |
346 | else | |
347 | phydev->advertising &= ~ADVERTISED_Autoneg; | |
348 | ||
349 | if (netif_running(netdev)) | |
350 | ret = phy_start_aneg(phydev); | |
351 | ||
352 | unlock: | |
353 | spin_unlock_irq(&pdata->lock); | |
354 | ||
355 | DBGPR("<--xgbe_set_settings\n"); | |
356 | ||
357 | return ret; | |
358 | } | |
359 | ||
360 | static void xgbe_get_drvinfo(struct net_device *netdev, | |
361 | struct ethtool_drvinfo *drvinfo) | |
362 | { | |
363 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
364 | ||
365 | strlcpy(drvinfo->driver, XGBE_DRV_NAME, sizeof(drvinfo->driver)); | |
366 | strlcpy(drvinfo->version, XGBE_DRV_VERSION, sizeof(drvinfo->version)); | |
367 | strlcpy(drvinfo->bus_info, dev_name(pdata->dev), | |
368 | sizeof(drvinfo->bus_info)); | |
369 | snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%d.%d.%d", | |
370 | XGMAC_IOREAD_BITS(pdata, MAC_VR, USERVER), | |
371 | XGMAC_IOREAD_BITS(pdata, MAC_VR, DEVID), | |
372 | XGMAC_IOREAD_BITS(pdata, MAC_VR, SNPSVER)); | |
373 | drvinfo->n_stats = XGBE_STATS_COUNT; | |
374 | } | |
375 | ||
376 | static int xgbe_get_coalesce(struct net_device *netdev, | |
377 | struct ethtool_coalesce *ec) | |
378 | { | |
379 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
380 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
381 | unsigned int riwt; | |
382 | ||
383 | DBGPR("-->xgbe_get_coalesce\n"); | |
384 | ||
385 | memset(ec, 0, sizeof(struct ethtool_coalesce)); | |
386 | ||
387 | riwt = pdata->rx_riwt; | |
388 | ec->rx_coalesce_usecs = hw_if->riwt_to_usec(pdata, riwt); | |
389 | ec->rx_max_coalesced_frames = pdata->rx_frames; | |
390 | ||
391 | ec->tx_coalesce_usecs = pdata->tx_usecs; | |
392 | ec->tx_max_coalesced_frames = pdata->tx_frames; | |
393 | ||
394 | DBGPR("<--xgbe_get_coalesce\n"); | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | static int xgbe_set_coalesce(struct net_device *netdev, | |
400 | struct ethtool_coalesce *ec) | |
401 | { | |
402 | struct xgbe_prv_data *pdata = netdev_priv(netdev); | |
403 | struct xgbe_hw_if *hw_if = &pdata->hw_if; | |
404 | unsigned int rx_frames, rx_riwt, rx_usecs; | |
405 | unsigned int tx_frames, tx_usecs; | |
406 | ||
407 | DBGPR("-->xgbe_set_coalesce\n"); | |
408 | ||
409 | /* Check for not supported parameters */ | |
410 | if ((ec->rx_coalesce_usecs_irq) || | |
411 | (ec->rx_max_coalesced_frames_irq) || | |
412 | (ec->tx_coalesce_usecs_irq) || | |
413 | (ec->tx_max_coalesced_frames_irq) || | |
414 | (ec->stats_block_coalesce_usecs) || | |
415 | (ec->use_adaptive_rx_coalesce) || | |
416 | (ec->use_adaptive_tx_coalesce) || | |
417 | (ec->pkt_rate_low) || | |
418 | (ec->rx_coalesce_usecs_low) || | |
419 | (ec->rx_max_coalesced_frames_low) || | |
420 | (ec->tx_coalesce_usecs_low) || | |
421 | (ec->tx_max_coalesced_frames_low) || | |
422 | (ec->pkt_rate_high) || | |
423 | (ec->rx_coalesce_usecs_high) || | |
424 | (ec->rx_max_coalesced_frames_high) || | |
425 | (ec->tx_coalesce_usecs_high) || | |
426 | (ec->tx_max_coalesced_frames_high) || | |
427 | (ec->rate_sample_interval)) | |
428 | return -EOPNOTSUPP; | |
429 | ||
430 | /* Can only change rx-frames when interface is down (see | |
431 | * rx_descriptor_init in xgbe-dev.c) | |
432 | */ | |
433 | rx_frames = pdata->rx_frames; | |
434 | if (rx_frames != ec->rx_max_coalesced_frames && netif_running(netdev)) { | |
435 | netdev_alert(netdev, | |
436 | "interface must be down to change rx-frames\n"); | |
437 | return -EINVAL; | |
438 | } | |
439 | ||
440 | rx_riwt = hw_if->usec_to_riwt(pdata, ec->rx_coalesce_usecs); | |
441 | rx_frames = ec->rx_max_coalesced_frames; | |
442 | ||
443 | /* Use smallest possible value if conversion resulted in zero */ | |
444 | if (ec->rx_coalesce_usecs && !rx_riwt) | |
445 | rx_riwt = 1; | |
446 | ||
447 | /* Check the bounds of values for Rx */ | |
448 | if (rx_riwt > XGMAC_MAX_DMA_RIWT) { | |
449 | rx_usecs = hw_if->riwt_to_usec(pdata, XGMAC_MAX_DMA_RIWT); | |
450 | netdev_alert(netdev, "rx-usec is limited to %d usecs\n", | |
451 | rx_usecs); | |
452 | return -EINVAL; | |
453 | } | |
454 | if (rx_frames > pdata->channel->rx_ring->rdesc_count) { | |
455 | netdev_alert(netdev, "rx-frames is limited to %d frames\n", | |
456 | pdata->channel->rx_ring->rdesc_count); | |
457 | return -EINVAL; | |
458 | } | |
459 | ||
460 | tx_usecs = ec->tx_coalesce_usecs; | |
461 | tx_frames = ec->tx_max_coalesced_frames; | |
462 | ||
463 | /* Check the bounds of values for Tx */ | |
464 | if (tx_frames > pdata->channel->tx_ring->rdesc_count) { | |
465 | netdev_alert(netdev, "tx-frames is limited to %d frames\n", | |
466 | pdata->channel->tx_ring->rdesc_count); | |
467 | return -EINVAL; | |
468 | } | |
469 | ||
470 | pdata->rx_riwt = rx_riwt; | |
471 | pdata->rx_frames = rx_frames; | |
472 | hw_if->config_rx_coalesce(pdata); | |
473 | ||
474 | pdata->tx_usecs = tx_usecs; | |
475 | pdata->tx_frames = tx_frames; | |
476 | hw_if->config_tx_coalesce(pdata); | |
477 | ||
478 | DBGPR("<--xgbe_set_coalesce\n"); | |
479 | ||
480 | return 0; | |
481 | } | |
482 | ||
483 | static const struct ethtool_ops xgbe_ethtool_ops = { | |
484 | .get_settings = xgbe_get_settings, | |
485 | .set_settings = xgbe_set_settings, | |
486 | .get_drvinfo = xgbe_get_drvinfo, | |
487 | .get_link = ethtool_op_get_link, | |
488 | .get_coalesce = xgbe_get_coalesce, | |
489 | .set_coalesce = xgbe_set_coalesce, | |
490 | .get_pauseparam = xgbe_get_pauseparam, | |
491 | .set_pauseparam = xgbe_set_pauseparam, | |
492 | .get_strings = xgbe_get_strings, | |
493 | .get_ethtool_stats = xgbe_get_ethtool_stats, | |
494 | .get_sset_count = xgbe_get_sset_count, | |
495 | }; | |
496 | ||
497 | struct ethtool_ops *xgbe_get_ethtool_ops(void) | |
498 | { | |
499 | return (struct ethtool_ops *)&xgbe_ethtool_ops; | |
500 | } |