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