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