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("Completion yield", completion_yield), 43 QETH_TXQ_STAT("Completion timer", completion_timer), 44 }; 45 46 static const struct qeth_stats card_stats[] = { 47 QETH_CARD_STAT("rx0 IO buffers", rx_bufs), 48 QETH_CARD_STAT("rx0 HW csum skbs", rx_skb_csum), 49 QETH_CARD_STAT("rx0 SG skbs", rx_sg_skbs), 50 QETH_CARD_STAT("rx0 SG page frags", rx_sg_frags), 51 QETH_CARD_STAT("rx0 SG page allocs", rx_sg_alloc_page), 52 QETH_CARD_STAT("rx0 dropped, no memory", rx_dropped_nomem), 53 QETH_CARD_STAT("rx0 dropped, bad format", rx_dropped_notsupp), 54 QETH_CARD_STAT("rx0 dropped, runt", rx_dropped_runt), 55 }; 56 57 #define TXQ_STATS_LEN ARRAY_SIZE(txq_stats) 58 #define CARD_STATS_LEN ARRAY_SIZE(card_stats) 59 60 static void qeth_add_stat_data(u64 **dst, void *src, 61 const struct qeth_stats stats[], 62 unsigned int size) 63 { 64 unsigned int i; 65 char *stat; 66 67 for (i = 0; i < size; i++) { 68 stat = (char *)src + stats[i].offset; 69 **dst = *(u64 *)stat; 70 (*dst)++; 71 } 72 } 73 74 static void qeth_add_stat_strings(u8 **data, const char *prefix, 75 const struct qeth_stats stats[], 76 unsigned int size) 77 { 78 unsigned int i; 79 80 for (i = 0; i < size; i++) { 81 snprintf(*data, ETH_GSTRING_LEN, "%s%s", prefix, stats[i].name); 82 *data += ETH_GSTRING_LEN; 83 } 84 } 85 86 static int qeth_get_sset_count(struct net_device *dev, int stringset) 87 { 88 struct qeth_card *card = dev->ml_priv; 89 90 switch (stringset) { 91 case ETH_SS_STATS: 92 return CARD_STATS_LEN + 93 card->qdio.no_out_queues * TXQ_STATS_LEN; 94 default: 95 return -EINVAL; 96 } 97 } 98 99 static void qeth_get_ethtool_stats(struct net_device *dev, 100 struct ethtool_stats *stats, u64 *data) 101 { 102 struct qeth_card *card = dev->ml_priv; 103 unsigned int i; 104 105 qeth_add_stat_data(&data, &card->stats, card_stats, CARD_STATS_LEN); 106 for (i = 0; i < card->qdio.no_out_queues; i++) 107 qeth_add_stat_data(&data, &card->qdio.out_qs[i]->stats, 108 txq_stats, TXQ_STATS_LEN); 109 } 110 111 static void qeth_get_ringparam(struct net_device *dev, 112 struct ethtool_ringparam *param) 113 { 114 struct qeth_card *card = dev->ml_priv; 115 116 param->rx_max_pending = QDIO_MAX_BUFFERS_PER_Q; 117 param->rx_mini_max_pending = 0; 118 param->rx_jumbo_max_pending = 0; 119 param->tx_max_pending = QDIO_MAX_BUFFERS_PER_Q; 120 121 param->rx_pending = card->qdio.in_buf_pool.buf_count; 122 param->rx_mini_pending = 0; 123 param->rx_jumbo_pending = 0; 124 param->tx_pending = QDIO_MAX_BUFFERS_PER_Q; 125 } 126 127 static void qeth_get_strings(struct net_device *dev, u32 stringset, u8 *data) 128 { 129 struct qeth_card *card = dev->ml_priv; 130 char prefix[ETH_GSTRING_LEN] = ""; 131 unsigned int i; 132 133 switch (stringset) { 134 case ETH_SS_STATS: 135 qeth_add_stat_strings(&data, prefix, card_stats, 136 CARD_STATS_LEN); 137 for (i = 0; i < card->qdio.no_out_queues; i++) { 138 snprintf(prefix, ETH_GSTRING_LEN, "tx%u ", i); 139 qeth_add_stat_strings(&data, prefix, txq_stats, 140 TXQ_STATS_LEN); 141 } 142 break; 143 default: 144 WARN_ON(1); 145 break; 146 } 147 } 148 149 static void qeth_get_drvinfo(struct net_device *dev, 150 struct ethtool_drvinfo *info) 151 { 152 struct qeth_card *card = dev->ml_priv; 153 154 strlcpy(info->driver, IS_LAYER2(card) ? "qeth_l2" : "qeth_l3", 155 sizeof(info->driver)); 156 strlcpy(info->version, "1.0", sizeof(info->version)); 157 strlcpy(info->fw_version, card->info.mcl_level, 158 sizeof(info->fw_version)); 159 snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s", 160 CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card)); 161 } 162 163 static void qeth_get_channels(struct net_device *dev, 164 struct ethtool_channels *channels) 165 { 166 struct qeth_card *card = dev->ml_priv; 167 168 channels->max_rx = dev->num_rx_queues; 169 channels->max_tx = card->qdio.no_out_queues; 170 channels->max_other = 0; 171 channels->max_combined = 0; 172 channels->rx_count = dev->real_num_rx_queues; 173 channels->tx_count = dev->real_num_tx_queues; 174 channels->other_count = 0; 175 channels->combined_count = 0; 176 } 177 178 static int qeth_get_tunable(struct net_device *dev, 179 const struct ethtool_tunable *tuna, void *data) 180 { 181 struct qeth_priv *priv = netdev_priv(dev); 182 183 switch (tuna->id) { 184 case ETHTOOL_RX_COPYBREAK: 185 *(u32 *)data = priv->rx_copybreak; 186 return 0; 187 default: 188 return -EOPNOTSUPP; 189 } 190 } 191 192 static int qeth_set_tunable(struct net_device *dev, 193 const struct ethtool_tunable *tuna, 194 const void *data) 195 { 196 struct qeth_priv *priv = netdev_priv(dev); 197 198 switch (tuna->id) { 199 case ETHTOOL_RX_COPYBREAK: 200 WRITE_ONCE(priv->rx_copybreak, *(u32 *)data); 201 return 0; 202 default: 203 return -EOPNOTSUPP; 204 } 205 } 206 207 /* Helper function to fill 'advertising' and 'supported' which are the same. */ 208 /* Autoneg and full-duplex are supported and advertised unconditionally. */ 209 /* Always advertise and support all speeds up to specified, and only one */ 210 /* specified port type. */ 211 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd, 212 int maxspeed, int porttype) 213 { 214 ethtool_link_ksettings_zero_link_mode(cmd, supported); 215 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 216 ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising); 217 218 ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg); 219 ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg); 220 221 switch (porttype) { 222 case PORT_TP: 223 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 224 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 225 break; 226 case PORT_FIBRE: 227 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE); 228 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE); 229 break; 230 default: 231 ethtool_link_ksettings_add_link_mode(cmd, supported, TP); 232 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP); 233 WARN_ON_ONCE(1); 234 } 235 236 /* partially does fall through, to also select lower speeds */ 237 switch (maxspeed) { 238 case SPEED_25000: 239 ethtool_link_ksettings_add_link_mode(cmd, supported, 240 25000baseSR_Full); 241 ethtool_link_ksettings_add_link_mode(cmd, advertising, 242 25000baseSR_Full); 243 break; 244 case SPEED_10000: 245 ethtool_link_ksettings_add_link_mode(cmd, supported, 246 10000baseT_Full); 247 ethtool_link_ksettings_add_link_mode(cmd, advertising, 248 10000baseT_Full); 249 /* fall through */ 250 case SPEED_1000: 251 ethtool_link_ksettings_add_link_mode(cmd, supported, 252 1000baseT_Full); 253 ethtool_link_ksettings_add_link_mode(cmd, advertising, 254 1000baseT_Full); 255 ethtool_link_ksettings_add_link_mode(cmd, supported, 256 1000baseT_Half); 257 ethtool_link_ksettings_add_link_mode(cmd, advertising, 258 1000baseT_Half); 259 /* fall through */ 260 case SPEED_100: 261 ethtool_link_ksettings_add_link_mode(cmd, supported, 262 100baseT_Full); 263 ethtool_link_ksettings_add_link_mode(cmd, advertising, 264 100baseT_Full); 265 ethtool_link_ksettings_add_link_mode(cmd, supported, 266 100baseT_Half); 267 ethtool_link_ksettings_add_link_mode(cmd, advertising, 268 100baseT_Half); 269 /* fall through */ 270 case SPEED_10: 271 ethtool_link_ksettings_add_link_mode(cmd, supported, 272 10baseT_Full); 273 ethtool_link_ksettings_add_link_mode(cmd, advertising, 274 10baseT_Full); 275 ethtool_link_ksettings_add_link_mode(cmd, supported, 276 10baseT_Half); 277 ethtool_link_ksettings_add_link_mode(cmd, advertising, 278 10baseT_Half); 279 break; 280 default: 281 ethtool_link_ksettings_add_link_mode(cmd, supported, 282 10baseT_Full); 283 ethtool_link_ksettings_add_link_mode(cmd, advertising, 284 10baseT_Full); 285 ethtool_link_ksettings_add_link_mode(cmd, supported, 286 10baseT_Half); 287 ethtool_link_ksettings_add_link_mode(cmd, advertising, 288 10baseT_Half); 289 WARN_ON_ONCE(1); 290 } 291 } 292 293 294 static int qeth_get_link_ksettings(struct net_device *netdev, 295 struct ethtool_link_ksettings *cmd) 296 { 297 struct qeth_card *card = netdev->ml_priv; 298 enum qeth_link_types link_type; 299 struct carrier_info carrier_info; 300 int rc; 301 302 if (IS_IQD(card) || IS_VM_NIC(card)) 303 link_type = QETH_LINK_TYPE_10GBIT_ETH; 304 else 305 link_type = card->info.link_type; 306 307 cmd->base.duplex = DUPLEX_FULL; 308 cmd->base.autoneg = AUTONEG_ENABLE; 309 cmd->base.phy_address = 0; 310 cmd->base.mdio_support = 0; 311 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID; 312 cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID; 313 314 switch (link_type) { 315 case QETH_LINK_TYPE_FAST_ETH: 316 case QETH_LINK_TYPE_LANE_ETH100: 317 cmd->base.speed = SPEED_100; 318 cmd->base.port = PORT_TP; 319 break; 320 case QETH_LINK_TYPE_GBIT_ETH: 321 case QETH_LINK_TYPE_LANE_ETH1000: 322 cmd->base.speed = SPEED_1000; 323 cmd->base.port = PORT_FIBRE; 324 break; 325 case QETH_LINK_TYPE_10GBIT_ETH: 326 cmd->base.speed = SPEED_10000; 327 cmd->base.port = PORT_FIBRE; 328 break; 329 case QETH_LINK_TYPE_25GBIT_ETH: 330 cmd->base.speed = SPEED_25000; 331 cmd->base.port = PORT_FIBRE; 332 break; 333 default: 334 cmd->base.speed = SPEED_10; 335 cmd->base.port = PORT_TP; 336 } 337 qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port); 338 339 /* Check if we can obtain more accurate information. */ 340 /* If QUERY_CARD_INFO command is not supported or fails, */ 341 /* just return the heuristics that was filled above. */ 342 rc = qeth_query_card_info(card, &carrier_info); 343 if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */ 344 return 0; 345 if (rc) /* report error from the hardware operation */ 346 return rc; 347 /* on success, fill in the information got from the hardware */ 348 349 netdev_dbg(netdev, 350 "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n", 351 carrier_info.card_type, 352 carrier_info.port_mode, 353 carrier_info.port_speed); 354 355 /* Update attributes for which we've obtained more authoritative */ 356 /* information, leave the rest the way they where filled above. */ 357 switch (carrier_info.card_type) { 358 case CARD_INFO_TYPE_1G_COPPER_A: 359 case CARD_INFO_TYPE_1G_COPPER_B: 360 cmd->base.port = PORT_TP; 361 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 362 break; 363 case CARD_INFO_TYPE_1G_FIBRE_A: 364 case CARD_INFO_TYPE_1G_FIBRE_B: 365 cmd->base.port = PORT_FIBRE; 366 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port); 367 break; 368 case CARD_INFO_TYPE_10G_FIBRE_A: 369 case CARD_INFO_TYPE_10G_FIBRE_B: 370 cmd->base.port = PORT_FIBRE; 371 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port); 372 break; 373 } 374 375 switch (carrier_info.port_mode) { 376 case CARD_INFO_PORTM_FULLDUPLEX: 377 cmd->base.duplex = DUPLEX_FULL; 378 break; 379 case CARD_INFO_PORTM_HALFDUPLEX: 380 cmd->base.duplex = DUPLEX_HALF; 381 break; 382 } 383 384 switch (carrier_info.port_speed) { 385 case CARD_INFO_PORTS_10M: 386 cmd->base.speed = SPEED_10; 387 break; 388 case CARD_INFO_PORTS_100M: 389 cmd->base.speed = SPEED_100; 390 break; 391 case CARD_INFO_PORTS_1G: 392 cmd->base.speed = SPEED_1000; 393 break; 394 case CARD_INFO_PORTS_10G: 395 cmd->base.speed = SPEED_10000; 396 break; 397 case CARD_INFO_PORTS_25G: 398 cmd->base.speed = SPEED_25000; 399 break; 400 } 401 402 return 0; 403 } 404 405 const struct ethtool_ops qeth_ethtool_ops = { 406 .get_link = ethtool_op_get_link, 407 .get_ringparam = qeth_get_ringparam, 408 .get_strings = qeth_get_strings, 409 .get_ethtool_stats = qeth_get_ethtool_stats, 410 .get_sset_count = qeth_get_sset_count, 411 .get_drvinfo = qeth_get_drvinfo, 412 .get_channels = qeth_get_channels, 413 .get_tunable = qeth_get_tunable, 414 .set_tunable = qeth_set_tunable, 415 .get_link_ksettings = qeth_get_link_ksettings, 416 }; 417 418 const struct ethtool_ops qeth_osn_ethtool_ops = { 419 .get_strings = qeth_get_strings, 420 .get_ethtool_stats = qeth_get_ethtool_stats, 421 .get_sset_count = qeth_get_sset_count, 422 .get_drvinfo = qeth_get_drvinfo, 423 }; 424