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