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; 333 334 if (cmd->autoneg == AUTONEG_ENABLE) { 335 /* Clear settings needed to force speeds */ 336 phydev->supported &= ~SUPPORTED_1000baseT_Full; 337 phydev->supported &= ~SUPPORTED_10000baseT_Full; 338 } else { 339 /* Add settings needed to force speed */ 340 phydev->supported |= SUPPORTED_1000baseT_Full; 341 phydev->supported |= SUPPORTED_10000baseT_Full; 342 } 343 344 cmd->advertising &= phydev->supported; 345 if ((cmd->autoneg == AUTONEG_ENABLE) && !cmd->advertising) 346 goto unlock; 347 348 ret = 0; 349 phydev->autoneg = cmd->autoneg; 350 phydev->speed = speed; 351 phydev->duplex = cmd->duplex; 352 phydev->advertising = cmd->advertising; 353 354 if (cmd->autoneg == AUTONEG_ENABLE) 355 phydev->advertising |= ADVERTISED_Autoneg; 356 else 357 phydev->advertising &= ~ADVERTISED_Autoneg; 358 359 if (netif_running(netdev)) 360 ret = phy_start_aneg(phydev); 361 362 unlock: 363 spin_unlock_irq(&pdata->lock); 364 365 DBGPR("<--xgbe_set_settings\n"); 366 367 return ret; 368 } 369 370 static void xgbe_get_drvinfo(struct net_device *netdev, 371 struct ethtool_drvinfo *drvinfo) 372 { 373 struct xgbe_prv_data *pdata = netdev_priv(netdev); 374 375 strlcpy(drvinfo->driver, XGBE_DRV_NAME, sizeof(drvinfo->driver)); 376 strlcpy(drvinfo->version, XGBE_DRV_VERSION, sizeof(drvinfo->version)); 377 strlcpy(drvinfo->bus_info, dev_name(pdata->dev), 378 sizeof(drvinfo->bus_info)); 379 snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%d.%d.%d", 380 XGMAC_IOREAD_BITS(pdata, MAC_VR, USERVER), 381 XGMAC_IOREAD_BITS(pdata, MAC_VR, DEVID), 382 XGMAC_IOREAD_BITS(pdata, MAC_VR, SNPSVER)); 383 drvinfo->n_stats = XGBE_STATS_COUNT; 384 } 385 386 static int xgbe_get_coalesce(struct net_device *netdev, 387 struct ethtool_coalesce *ec) 388 { 389 struct xgbe_prv_data *pdata = netdev_priv(netdev); 390 struct xgbe_hw_if *hw_if = &pdata->hw_if; 391 unsigned int riwt; 392 393 DBGPR("-->xgbe_get_coalesce\n"); 394 395 memset(ec, 0, sizeof(struct ethtool_coalesce)); 396 397 riwt = pdata->rx_riwt; 398 ec->rx_coalesce_usecs = hw_if->riwt_to_usec(pdata, riwt); 399 ec->rx_max_coalesced_frames = pdata->rx_frames; 400 401 ec->tx_coalesce_usecs = pdata->tx_usecs; 402 ec->tx_max_coalesced_frames = pdata->tx_frames; 403 404 DBGPR("<--xgbe_get_coalesce\n"); 405 406 return 0; 407 } 408 409 static int xgbe_set_coalesce(struct net_device *netdev, 410 struct ethtool_coalesce *ec) 411 { 412 struct xgbe_prv_data *pdata = netdev_priv(netdev); 413 struct xgbe_hw_if *hw_if = &pdata->hw_if; 414 unsigned int rx_frames, rx_riwt, rx_usecs; 415 unsigned int tx_frames, tx_usecs; 416 417 DBGPR("-->xgbe_set_coalesce\n"); 418 419 /* Check for not supported parameters */ 420 if ((ec->rx_coalesce_usecs_irq) || 421 (ec->rx_max_coalesced_frames_irq) || 422 (ec->tx_coalesce_usecs_irq) || 423 (ec->tx_max_coalesced_frames_irq) || 424 (ec->stats_block_coalesce_usecs) || 425 (ec->use_adaptive_rx_coalesce) || 426 (ec->use_adaptive_tx_coalesce) || 427 (ec->pkt_rate_low) || 428 (ec->rx_coalesce_usecs_low) || 429 (ec->rx_max_coalesced_frames_low) || 430 (ec->tx_coalesce_usecs_low) || 431 (ec->tx_max_coalesced_frames_low) || 432 (ec->pkt_rate_high) || 433 (ec->rx_coalesce_usecs_high) || 434 (ec->rx_max_coalesced_frames_high) || 435 (ec->tx_coalesce_usecs_high) || 436 (ec->tx_max_coalesced_frames_high) || 437 (ec->rate_sample_interval)) 438 return -EOPNOTSUPP; 439 440 /* Can only change rx-frames when interface is down (see 441 * rx_descriptor_init in xgbe-dev.c) 442 */ 443 rx_frames = pdata->rx_frames; 444 if (rx_frames != ec->rx_max_coalesced_frames && netif_running(netdev)) { 445 netdev_alert(netdev, 446 "interface must be down to change rx-frames\n"); 447 return -EINVAL; 448 } 449 450 rx_riwt = hw_if->usec_to_riwt(pdata, ec->rx_coalesce_usecs); 451 rx_frames = ec->rx_max_coalesced_frames; 452 453 /* Use smallest possible value if conversion resulted in zero */ 454 if (ec->rx_coalesce_usecs && !rx_riwt) 455 rx_riwt = 1; 456 457 /* Check the bounds of values for Rx */ 458 if (rx_riwt > XGMAC_MAX_DMA_RIWT) { 459 rx_usecs = hw_if->riwt_to_usec(pdata, XGMAC_MAX_DMA_RIWT); 460 netdev_alert(netdev, "rx-usec is limited to %d usecs\n", 461 rx_usecs); 462 return -EINVAL; 463 } 464 if (rx_frames > pdata->channel->rx_ring->rdesc_count) { 465 netdev_alert(netdev, "rx-frames is limited to %d frames\n", 466 pdata->channel->rx_ring->rdesc_count); 467 return -EINVAL; 468 } 469 470 tx_usecs = ec->tx_coalesce_usecs; 471 tx_frames = ec->tx_max_coalesced_frames; 472 473 /* Check the bounds of values for Tx */ 474 if (tx_frames > pdata->channel->tx_ring->rdesc_count) { 475 netdev_alert(netdev, "tx-frames is limited to %d frames\n", 476 pdata->channel->tx_ring->rdesc_count); 477 return -EINVAL; 478 } 479 480 pdata->rx_riwt = rx_riwt; 481 pdata->rx_frames = rx_frames; 482 hw_if->config_rx_coalesce(pdata); 483 484 pdata->tx_usecs = tx_usecs; 485 pdata->tx_frames = tx_frames; 486 hw_if->config_tx_coalesce(pdata); 487 488 DBGPR("<--xgbe_set_coalesce\n"); 489 490 return 0; 491 } 492 493 static const struct ethtool_ops xgbe_ethtool_ops = { 494 .get_settings = xgbe_get_settings, 495 .set_settings = xgbe_set_settings, 496 .get_drvinfo = xgbe_get_drvinfo, 497 .get_link = ethtool_op_get_link, 498 .get_coalesce = xgbe_get_coalesce, 499 .set_coalesce = xgbe_set_coalesce, 500 .get_pauseparam = xgbe_get_pauseparam, 501 .set_pauseparam = xgbe_set_pauseparam, 502 .get_strings = xgbe_get_strings, 503 .get_ethtool_stats = xgbe_get_ethtool_stats, 504 .get_sset_count = xgbe_get_sset_count, 505 }; 506 507 struct ethtool_ops *xgbe_get_ethtool_ops(void) 508 { 509 return (struct ethtool_ops *)&xgbe_ethtool_ops; 510 } 511