1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2018 4 */ 5 6 #define KMSG_COMPONENT "qeth" 7 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 8 9 #include <linux/ethtool.h> 10 #include "qeth_core.h" 11 12 13 #define QETH_TXQ_STAT(_name, _stat) { \ 14 .name = _name, \ 15 .offset = offsetof(struct qeth_out_q_stats, _stat) \ 16 } 17 18 #define QETH_CARD_STAT(_name, _stat) { \ 19 .name = _name, \ 20 .offset = offsetof(struct qeth_card_stats, _stat) \ 21 } 22 23 struct qeth_stats { 24 char name[ETH_GSTRING_LEN]; 25 unsigned int offset; 26 }; 27 28 static const struct qeth_stats txq_stats[] = { 29 QETH_TXQ_STAT("IO buffers", bufs), 30 QETH_TXQ_STAT("IO buffer elements", buf_elements), 31 QETH_TXQ_STAT("packed IO buffers", bufs_pack), 32 QETH_TXQ_STAT("skbs", tx_packets), 33 QETH_TXQ_STAT("packed skbs", skbs_pack), 34 QETH_TXQ_STAT("SG skbs", skbs_sg), 35 QETH_TXQ_STAT("HW csum skbs", skbs_csum), 36 QETH_TXQ_STAT("TSO skbs", skbs_tso), 37 QETH_TXQ_STAT("linearized skbs", skbs_linearized), 38 QETH_TXQ_STAT("linearized+error skbs", skbs_linearized_fail), 39 QETH_TXQ_STAT("TSO bytes", tso_bytes), 40 QETH_TXQ_STAT("Packing mode switches", packing_mode_switch), 41 QETH_TXQ_STAT("Queue stopped", stopped), 42 QETH_TXQ_STAT("Doorbell", doorbell), 43 QETH_TXQ_STAT("IRQ for frames", coal_frames), 44 QETH_TXQ_STAT("Completion yield", completion_yield), 45 QETH_TXQ_STAT("Completion timer", completion_timer), 46 }; 47 48 static const struct qeth_stats card_stats[] = { 49 QETH_CARD_STAT("rx0 IO buffers", rx_bufs), 50 QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum), 51 QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs), 52 QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags), 53 QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page), 54 QETH_CARD_STAT("rx0 dropped, no memory", rx_dropped_nomem), 55 QETH_CARD_STAT("rx0 dropped, bad format", rx_dropped_notsupp), 56 QETH_CARD_STAT("rx0 dropped, runt", rx_dropped_runt), 57 }; 58 59 #define TXQ_STATS_LEN ARRAY_SIZE(txq_stats) 60 #define CARD_STATS_LEN ARRAY_SIZE(card_stats) 61 62 static void qeth_add_stat_data(u64 **dst, void *src, 63 const struct qeth_stats stats[], 64 unsigned int size) 65 { 66 unsigned int i; 67 char *stat; 68 69 for (i = 0; i < size; i++) { 70 stat = (char *)src + stats[i].offset; 71 **dst = *(u64 *)stat; 72 (*dst)++; 73 } 74 } 75 76 static void qeth_add_stat_strings(u8 **data, const char *prefix, 77 const struct qeth_stats stats[], 78 unsigned int size) 79 { 80 unsigned int i; 81 82 for (i = 0; i < size; i++) { 83 snprintf(*data, ETH_GSTRING_LEN, "%s%s", prefix, stats[i].name); 84 *data += ETH_GSTRING_LEN; 85 } 86 } 87 88 static int qeth_get_sset_count(struct net_device *dev, int stringset) 89 { 90 struct qeth_card *card = dev->ml_priv; 91 92 switch (stringset) { 93 case ETH_SS_STATS: 94 return CARD_STATS_LEN + 95 card->qdio.no_out_queues * TXQ_STATS_LEN; 96 default: 97 return -EINVAL; 98 } 99 } 100 101 static void qeth_get_ethtool_stats(struct net_device *dev, 102 struct ethtool_stats *stats, u64 *data) 103 { 104 struct qeth_card *card = dev->ml_priv; 105 unsigned int i; 106 107 qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN); 108 for (i = 0; i < card->qdio.no_out_queues; i++) 109 qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats, 110 txq_stats, TXQ_STATS_LEN); 111 } 112 113 static void __qeth_set_coalesce(struct net_device *dev, 114 struct qeth_qdio_out_q *queue, 115 struct ethtool_coalesce *coal) 116 { 117 WRITE_ONCE(queue->coalesce_usecs, coal->tx_coalesce_usecs); 118 WRITE_ONCE(queue->max_coalesced_frames, coal->tx_max_coalesced_frames); 119 120 if (coal->tx_coalesce_usecs && 121 netif_running(dev) && 122 !qeth_out_queue_is_empty(queue)) 123 qeth_tx_arm_timer(queue, coal->tx_coalesce_usecs); 124 } 125 126 static int qeth_set_coalesce(struct net_device *dev, 127 struct ethtool_coalesce *coal) 128 { 129 struct qeth_card *card = dev->ml_priv; 130 struct qeth_qdio_out_q *queue; 131 unsigned int i; 132 133 if (!IS_IQD(card)) 134 return -EOPNOTSUPP; 135 136 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames) 137 return -EINVAL; 138 139 qeth_for_each_output_queue(card, queue, i) 140 __qeth_set_coalesce(dev, queue, coal); 141 142 return 0; 143 } 144 145 static void qeth_get_ringparam(struct net_device *dev, 146 struct ethtool_ringparam *param) 147 { 148 struct qeth_card *card = dev->ml_priv; 149 150 param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q; 151 param->rx_mini_max_pending = 0; 152 param->rx_jumbo_max_pending = 0; 153 param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q; 154 155 param->rx_pending = card->qdio.in_buf_pool.buf_count; 156 param->rx_mini_pending = 0; 157 param->rx_jumbo_pending = 0; 158 param->tx_pending = QDIO_MAX_BUFFERS_PER_Q; 159 } 160 161 static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data) 162 { 163 struct qeth_card *card = dev->ml_priv; 164 char prefix[ETH_GSTRING_LEN] = ""; 165 unsigned int i; 166 167 switch (stringset) { 168 case ETH_SS_STATS: 169 qeth_add_stat_strings(&data, prefix, card_stats, 170 CARD_STATS_LEN); 171 for (i = 0; i < card->qdio.no_out_queues; i++) { 172 snprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i); 173 qeth_add_stat_strings(&data, prefix, txq_stats, 174 TXQ_STATS_LEN); 175 } 176 break; 177 default: 178 WARN_ON(1); 179 break; 180 } 181 } 182 183 static void qeth_get_drvinfo(struct net_device *dev, 184 struct ethtool_drvinfo *info) 185 { 186 struct qeth_card *card = dev->ml_priv; 187 188 strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3", 189 sizeof(info->driver)); 190 strlcpy(info->fw_version, card->info.mcl_level, 191 sizeof(info->fw_version)); 192 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 193 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 194 } 195 196 static void qeth_get_channels(struct net_device *dev, 197 struct ethtool_channels *channels) 198 { 199 struct qeth_card *card = dev->ml_priv; 200 201 channels->max_rx = dev->num_rx_queues; 202 channels->max_tx = card->qdio.no_out_queues; 203 channels->max_other = 0; 204 channels->max_combined = 0; 205 channels->rx_count = dev->real_num_rx_queues; 206 channels->tx_count = dev->real_num_tx_queues; 207 channels->other_count = 0; 208 channels->combined_count = 0; 209 } 210 211 static int qeth_set_channels(struct net_device *dev, 212 struct ethtool_channels *channels) 213 { 214 struct qeth_card *card = dev->ml_priv; 215 216 if (channels->rx_count == 0 || channels->tx_count == 0) 217 return -EINVAL; 218 if (channels->tx_count > card->qdio.no_out_queues) 219 return -EINVAL; 220 221 if (IS_IQD(card)) { 222 if (channels->tx_count < QETH_IQD_MIN_TXQ) 223 return -EINVAL; 224 225 /* Reject downgrade while running. It could push displaced 226 * ucast flows onto txq0, which is reserved for mcast. 227 */ 228 if (netif_running(dev) && 229 channels->tx_count < dev->real_num_tx_queues) 230 return -EPERM; 231 } else { 232 /* OSA still uses the legacy prio-queue mechanism: */ 233 if (!IS_VM_NIC(card)) 234 return -EOPNOTSUPP; 235 } 236 237 return qeth_set_real_num_tx_queues(card, channels->tx_count); 238 } 239 240 static int qeth_get_ts_info(struct net_device *dev, 241 struct ethtool_ts_info *info) 242 { 243 struct qeth_card *card = dev->ml_priv; 244 245 if (!IS_IQD(card)) 246 return -EOPNOTSUPP; 247 248 return ethtool_op_get_ts_info(dev, info); 249 } 250 251 static int qeth_get_tunable(struct net_device *dev, 252 const struct ethtool_tunable *tuna, void *data) 253 { 254 struct qeth_priv *priv = netdev_priv(dev); 255 256 switch (tuna->id) { 257 case ETHTOOL_RX_COPYBREAK: 258 *(u32 *)data = priv->rx_copybreak; 259 return 0; 260 default: 261 return -EOPNOTSUPP; 262 } 263 } 264 265 static int qeth_set_tunable(struct net_device *dev, 266 const struct ethtool_tunable *tuna, 267 const void *data) 268 { 269 struct qeth_priv *priv = netdev_priv(dev); 270 271 switch (tuna->id) { 272 case ETHTOOL_RX_COPYBREAK: 273 WRITE_ONCE(priv->rx_copybreak, *(u32 *)data); 274 return 0; 275 default: 276 return -EOPNOTSUPP; 277 } 278 } 279 280 static int qeth_get_per_queue_coalesce(struct net_device *dev, u32 __queue, 281 struct ethtool_coalesce *coal) 282 { 283 struct qeth_card *card = dev->ml_priv; 284 struct qeth_qdio_out_q *queue; 285 286 if (!IS_IQD(card)) 287 return -EOPNOTSUPP; 288 289 if (__queue >= card->qdio.no_out_queues) 290 return -EINVAL; 291 292 queue = card->qdio.out_qs[__queue]; 293 294 coal->tx_coalesce_usecs = queue->coalesce_usecs; 295 coal->tx_max_coalesced_frames = queue->max_coalesced_frames; 296 return 0; 297 } 298 299 static int qeth_set_per_queue_coalesce(struct net_device *dev, u32 queue, 300 struct ethtool_coalesce *coal) 301 { 302 struct qeth_card *card = dev->ml_priv; 303 304 if (!IS_IQD(card)) 305 return -EOPNOTSUPP; 306 307 if (queue >= card->qdio.no_out_queues) 308 return -EINVAL; 309 310 if (!coal->tx_coalesce_usecs && !coal->tx_max_coalesced_frames) 311 return -EINVAL; 312 313 __qeth_set_coalesce(dev, card->qdio.out_qs[queue], coal); 314 return 0; 315 } 316 317 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 318 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 319 /* Always advertise and support all speeds up to specified, and only one */ 320 /* specified port type. */ 321 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 322 int maxspeed, int porttype) 323 { 324 ethtool_link_ksettings_zero_link_mode(cmd, supported); 325 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 326 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 327 328 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 329 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 330 331 switch (porttype) { 332 case PORT_TP: 333 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 334 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 335 break; 336 case PORT_FIBRE: 337 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 338 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 339 break; 340 default: 341 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 342 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 343 WARN_ON_ONCE(1); 344 } 345 346 /* partially does fall through, to also select lower speeds */ 347 switch (maxspeed) { 348 case SPEED_25000: 349 ethtool_link_ksettings_add_link_mode(cmd, supported, 350 25000baseSR_Full); 351 ethtool_link_ksettings_add_link_mode(cmd, advertising, 352 25000baseSR_Full); 353 break; 354 case SPEED_10000: 355 ethtool_link_ksettings_add_link_mode(cmd, supported, 356 10000baseT_Full); 357 ethtool_link_ksettings_add_link_mode(cmd, advertising, 358 10000baseT_Full); 359 /* fall through */ 360 case SPEED_1000: 361 ethtool_link_ksettings_add_link_mode(cmd, supported, 362 1000baseT_Full); 363 ethtool_link_ksettings_add_link_mode(cmd, advertising, 364 1000baseT_Full); 365 ethtool_link_ksettings_add_link_mode(cmd, supported, 366 1000baseT_Half); 367 ethtool_link_ksettings_add_link_mode(cmd, advertising, 368 1000baseT_Half); 369 /* fall through */ 370 case SPEED_100: 371 ethtool_link_ksettings_add_link_mode(cmd, supported, 372 100baseT_Full); 373 ethtool_link_ksettings_add_link_mode(cmd, advertising, 374 100baseT_Full); 375 ethtool_link_ksettings_add_link_mode(cmd, supported, 376 100baseT_Half); 377 ethtool_link_ksettings_add_link_mode(cmd, advertising, 378 100baseT_Half); 379 /* fall through */ 380 case SPEED_10: 381 ethtool_link_ksettings_add_link_mode(cmd, supported, 382 10baseT_Full); 383 ethtool_link_ksettings_add_link_mode(cmd, advertising, 384 10baseT_Full); 385 ethtool_link_ksettings_add_link_mode(cmd, supported, 386 10baseT_Half); 387 ethtool_link_ksettings_add_link_mode(cmd, advertising, 388 10baseT_Half); 389 break; 390 default: 391 ethtool_link_ksettings_add_link_mode(cmd, supported, 392 10baseT_Full); 393 ethtool_link_ksettings_add_link_mode(cmd, advertising, 394 10baseT_Full); 395 ethtool_link_ksettings_add_link_mode(cmd, supported, 396 10baseT_Half); 397 ethtool_link_ksettings_add_link_mode(cmd, advertising, 398 10baseT_Half); 399 WARN_ON_ONCE(1); 400 } 401 } 402 403 404 static int qeth_get_link_ksettings(struct net_device *netdev, 405 struct ethtool_link_ksettings *cmd) 406 { 407 struct qeth_card *card = netdev->ml_priv; 408 enum qeth_link_types link_type; 409 struct carrier_info carrier_info; 410 int rc; 411 412 if (IS_IQD(card) || IS_VM_NIC(card)) 413 link_type = QETH_LINK_TYPE_10GBIT_ETH; 414 else 415 link_type = card->info.link_type; 416 417 cmd->base.duplex = DUPLEX_FULL; 418 cmd->base.autoneg = AUTONEG_ENABLE; 419 cmd->base.phy_address = 0; 420 cmd->base.mdio_support = 0; 421 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 422 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 423 424 switch (link_type) { 425 case QETH_LINK_TYPE_FAST_ETH: 426 case QETH_LINK_TYPE_LANE_ETH100: 427 cmd->base.speed = SPEED_100; 428 cmd->base.port = PORT_TP; 429 break; 430 case QETH_LINK_TYPE_GBIT_ETH: 431 case QETH_LINK_TYPE_LANE_ETH1000: 432 cmd->base.speed = SPEED_1000; 433 cmd->base.port = PORT_FIBRE; 434 break; 435 case QETH_LINK_TYPE_10GBIT_ETH: 436 cmd->base.speed = SPEED_10000; 437 cmd->base.port = PORT_FIBRE; 438 break; 439 case QETH_LINK_TYPE_25GBIT_ETH: 440 cmd->base.speed = SPEED_25000; 441 cmd->base.port = PORT_FIBRE; 442 break; 443 default: 444 cmd->base.speed = SPEED_10; 445 cmd->base.port = PORT_TP; 446 } 447 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 448 449 /* Check if we can obtain more accurate information. */ 450 /* If QUERY_CARD_INFO command is not supported or fails, */ 451 /* just return the heuristics that was filled above. */ 452 rc = qeth_query_card_info(card, &carrier_info); 453 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 454 return 0; 455 if (rc) /* report error from the hardware operation */ 456 return rc; 457 /* on success, fill in the information got from the hardware */ 458 459 netdev_dbg(netdev, 460 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 461 carrier_info.card_type, 462 carrier_info.port_mode, 463 carrier_info.port_speed); 464 465 /* Update attributes for which we've obtained more authoritative */ 466 /* information, leave the rest the way they where filled above. */ 467 switch (carrier_info.card_type) { 468 case CARD_INFO_TYPE_1G_COPPER_A: 469 case CARD_INFO_TYPE_1G_COPPER_B: 470 cmd->base.port = PORT_TP; 471 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 472 break; 473 case CARD_INFO_TYPE_1G_FIBRE_A: 474 case CARD_INFO_TYPE_1G_FIBRE_B: 475 cmd->base.port = PORT_FIBRE; 476 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 477 break; 478 case CARD_INFO_TYPE_10G_FIBRE_A: 479 case CARD_INFO_TYPE_10G_FIBRE_B: 480 cmd->base.port = PORT_FIBRE; 481 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 482 break; 483 } 484 485 switch (carrier_info.port_mode) { 486 case CARD_INFO_PORTM_FULLDUPLEX: 487 cmd->base.duplex = DUPLEX_FULL; 488 break; 489 case CARD_INFO_PORTM_HALFDUPLEX: 490 cmd->base.duplex = DUPLEX_HALF; 491 break; 492 } 493 494 switch (carrier_info.port_speed) { 495 case CARD_INFO_PORTS_10M: 496 cmd->base.speed = SPEED_10; 497 break; 498 case CARD_INFO_PORTS_100M: 499 cmd->base.speed = SPEED_100; 500 break; 501 case CARD_INFO_PORTS_1G: 502 cmd->base.speed = SPEED_1000; 503 break; 504 case CARD_INFO_PORTS_10G: 505 cmd->base.speed = SPEED_10000; 506 break; 507 case CARD_INFO_PORTS_25G: 508 cmd->base.speed = SPEED_25000; 509 break; 510 } 511 512 return 0; 513 } 514 515 const struct ethtool_ops qeth_ethtool_ops = { 516 .supported_coalesce_params = ETHTOOL_COALESCE_TX_USECS | 517 ETHTOOL_COALESCE_TX_MAX_FRAMES, 518 .get_link = ethtool_op_get_link, 519 .set_coalesce = qeth_set_coalesce, 520 .get_ringparam = qeth_get_ringparam, 521 .get_strings = qeth_get_strings, 522 .get_ethtool_stats = qeth_get_ethtool_stats, 523 .get_sset_count = qeth_get_sset_count, 524 .get_drvinfo = qeth_get_drvinfo, 525 .get_channels = qeth_get_channels, 526 .set_channels = qeth_set_channels, 527 .get_ts_info = qeth_get_ts_info, 528 .get_tunable = qeth_get_tunable, 529 .set_tunable = qeth_set_tunable, 530 .get_per_queue_coalesce = qeth_get_per_queue_coalesce, 531 .set_per_queue_coalesce = qeth_set_per_queue_coalesce, 532 .get_link_ksettings = qeth_get_link_ksettings, 533 }; 534 535 const struct ethtool_ops qeth_osn_ethtool_ops = { 536 .get_strings = qeth_get_strings, 537 .get_ethtool_stats = qeth_get_ethtool_stats, 538 .get_sset_count = qeth_get_sset_count, 539 .get_drvinfo = qeth_get_drvinfo, 540 }; 541