1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2009 - 2018 Intel Corporation. */ 3 4 /* ethtool support for igbvf */ 5 6 #include <linux/netdevice.h> 7 #include <linux/ethtool.h> 8 #include <linux/pci.h> 9 #include <linux/vmalloc.h> 10 #include <linux/delay.h> 11 12 #include "igbvf.h" 13 #include <linux/if_vlan.h> 14 15 struct igbvf_stats { 16 char stat_string[ETH_GSTRING_LEN]; 17 int sizeof_stat; 18 int stat_offset; 19 int base_stat_offset; 20 }; 21 22 #define IGBVF_STAT(current, base) \ 23 sizeof(((struct igbvf_adapter *)0)->current), \ 24 offsetof(struct igbvf_adapter, current), \ 25 offsetof(struct igbvf_adapter, base) 26 27 static const struct igbvf_stats igbvf_gstrings_stats[] = { 28 { "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) }, 29 { "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) }, 30 { "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) }, 31 { "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) }, 32 { "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) }, 33 { "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) }, 34 { "lbtx_packets", IGBVF_STAT(stats.gptlbc, stats.base_gptlbc) }, 35 { "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) }, 36 { "lbtx_bytes", IGBVF_STAT(stats.gotlbc, stats.base_gotlbc) }, 37 { "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) }, 38 { "tx_timeout_count", IGBVF_STAT(tx_timeout_count, zero_base) }, 39 { "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) }, 40 { "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) }, 41 { "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) }, 42 { "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) }, 43 }; 44 45 #define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats) 46 47 static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = { 48 "Link test (on/offline)" 49 }; 50 51 #define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test) 52 53 static int igbvf_get_link_ksettings(struct net_device *netdev, 54 struct ethtool_link_ksettings *cmd) 55 { 56 struct igbvf_adapter *adapter = netdev_priv(netdev); 57 struct e1000_hw *hw = &adapter->hw; 58 u32 status; 59 60 ethtool_link_ksettings_zero_link_mode(cmd, supported); 61 ethtool_link_ksettings_add_link_mode(cmd, supported, 1000baseT_Full); 62 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 63 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1000baseT_Full); 64 65 cmd->base.port = -1; 66 67 status = er32(STATUS); 68 if (status & E1000_STATUS_LU) { 69 if (status & E1000_STATUS_SPEED_1000) 70 cmd->base.speed = SPEED_1000; 71 else if (status & E1000_STATUS_SPEED_100) 72 cmd->base.speed = SPEED_100; 73 else 74 cmd->base.speed = SPEED_10; 75 76 if (status & E1000_STATUS_FD) 77 cmd->base.duplex = DUPLEX_FULL; 78 else 79 cmd->base.duplex = DUPLEX_HALF; 80 } else { 81 cmd->base.speed = SPEED_UNKNOWN; 82 cmd->base.duplex = DUPLEX_UNKNOWN; 83 } 84 85 cmd->base.autoneg = AUTONEG_DISABLE; 86 87 return 0; 88 } 89 90 static int igbvf_set_link_ksettings(struct net_device *netdev, 91 const struct ethtool_link_ksettings *cmd) 92 { 93 return -EOPNOTSUPP; 94 } 95 96 static void igbvf_get_pauseparam(struct net_device *netdev, 97 struct ethtool_pauseparam *pause) 98 { 99 } 100 101 static int igbvf_set_pauseparam(struct net_device *netdev, 102 struct ethtool_pauseparam *pause) 103 { 104 return -EOPNOTSUPP; 105 } 106 107 static u32 igbvf_get_msglevel(struct net_device *netdev) 108 { 109 struct igbvf_adapter *adapter = netdev_priv(netdev); 110 111 return adapter->msg_enable; 112 } 113 114 static void igbvf_set_msglevel(struct net_device *netdev, u32 data) 115 { 116 struct igbvf_adapter *adapter = netdev_priv(netdev); 117 118 adapter->msg_enable = data; 119 } 120 121 static int igbvf_get_regs_len(struct net_device *netdev) 122 { 123 #define IGBVF_REGS_LEN 8 124 return IGBVF_REGS_LEN * sizeof(u32); 125 } 126 127 static void igbvf_get_regs(struct net_device *netdev, 128 struct ethtool_regs *regs, void *p) 129 { 130 struct igbvf_adapter *adapter = netdev_priv(netdev); 131 struct e1000_hw *hw = &adapter->hw; 132 u32 *regs_buff = p; 133 134 memset(p, 0, IGBVF_REGS_LEN * sizeof(u32)); 135 136 regs->version = (1u << 24) | 137 (adapter->pdev->revision << 16) | 138 adapter->pdev->device; 139 140 regs_buff[0] = er32(CTRL); 141 regs_buff[1] = er32(STATUS); 142 143 regs_buff[2] = er32(RDLEN(0)); 144 regs_buff[3] = er32(RDH(0)); 145 regs_buff[4] = er32(RDT(0)); 146 147 regs_buff[5] = er32(TDLEN(0)); 148 regs_buff[6] = er32(TDH(0)); 149 regs_buff[7] = er32(TDT(0)); 150 } 151 152 static int igbvf_get_eeprom_len(struct net_device *netdev) 153 { 154 return 0; 155 } 156 157 static int igbvf_get_eeprom(struct net_device *netdev, 158 struct ethtool_eeprom *eeprom, u8 *bytes) 159 { 160 return -EOPNOTSUPP; 161 } 162 163 static int igbvf_set_eeprom(struct net_device *netdev, 164 struct ethtool_eeprom *eeprom, u8 *bytes) 165 { 166 return -EOPNOTSUPP; 167 } 168 169 static void igbvf_get_drvinfo(struct net_device *netdev, 170 struct ethtool_drvinfo *drvinfo) 171 { 172 struct igbvf_adapter *adapter = netdev_priv(netdev); 173 174 strscpy(drvinfo->driver, igbvf_driver_name, sizeof(drvinfo->driver)); 175 strscpy(drvinfo->bus_info, pci_name(adapter->pdev), 176 sizeof(drvinfo->bus_info)); 177 } 178 179 static void igbvf_get_ringparam(struct net_device *netdev, 180 struct ethtool_ringparam *ring, 181 struct kernel_ethtool_ringparam *kernel_ring, 182 struct netlink_ext_ack *extack) 183 { 184 struct igbvf_adapter *adapter = netdev_priv(netdev); 185 struct igbvf_ring *tx_ring = adapter->tx_ring; 186 struct igbvf_ring *rx_ring = adapter->rx_ring; 187 188 ring->rx_max_pending = IGBVF_MAX_RXD; 189 ring->tx_max_pending = IGBVF_MAX_TXD; 190 ring->rx_pending = rx_ring->count; 191 ring->tx_pending = tx_ring->count; 192 } 193 194 static int igbvf_set_ringparam(struct net_device *netdev, 195 struct ethtool_ringparam *ring, 196 struct kernel_ethtool_ringparam *kernel_ring, 197 struct netlink_ext_ack *extack) 198 { 199 struct igbvf_adapter *adapter = netdev_priv(netdev); 200 struct igbvf_ring *temp_ring; 201 int err = 0; 202 u32 new_rx_count, new_tx_count; 203 204 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 205 return -EINVAL; 206 207 new_rx_count = max_t(u32, ring->rx_pending, IGBVF_MIN_RXD); 208 new_rx_count = min_t(u32, new_rx_count, IGBVF_MAX_RXD); 209 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE); 210 211 new_tx_count = max_t(u32, ring->tx_pending, IGBVF_MIN_TXD); 212 new_tx_count = min_t(u32, new_tx_count, IGBVF_MAX_TXD); 213 new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE); 214 215 if ((new_tx_count == adapter->tx_ring->count) && 216 (new_rx_count == adapter->rx_ring->count)) { 217 /* nothing to do */ 218 return 0; 219 } 220 221 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) 222 usleep_range(1000, 2000); 223 224 if (!netif_running(adapter->netdev)) { 225 adapter->tx_ring->count = new_tx_count; 226 adapter->rx_ring->count = new_rx_count; 227 goto clear_reset; 228 } 229 230 temp_ring = vmalloc(sizeof(struct igbvf_ring)); 231 if (!temp_ring) { 232 err = -ENOMEM; 233 goto clear_reset; 234 } 235 236 igbvf_down(adapter); 237 238 /* We can't just free everything and then setup again, 239 * because the ISRs in MSI-X mode get passed pointers 240 * to the Tx and Rx ring structs. 241 */ 242 if (new_tx_count != adapter->tx_ring->count) { 243 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring)); 244 245 temp_ring->count = new_tx_count; 246 err = igbvf_setup_tx_resources(adapter, temp_ring); 247 if (err) 248 goto err_setup; 249 250 igbvf_free_tx_resources(adapter->tx_ring); 251 252 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring)); 253 } 254 255 if (new_rx_count != adapter->rx_ring->count) { 256 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring)); 257 258 temp_ring->count = new_rx_count; 259 err = igbvf_setup_rx_resources(adapter, temp_ring); 260 if (err) 261 goto err_setup; 262 263 igbvf_free_rx_resources(adapter->rx_ring); 264 265 memcpy(adapter->rx_ring, temp_ring, sizeof(struct igbvf_ring)); 266 } 267 err_setup: 268 igbvf_up(adapter); 269 vfree(temp_ring); 270 clear_reset: 271 clear_bit(__IGBVF_RESETTING, &adapter->state); 272 return err; 273 } 274 275 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data) 276 { 277 struct e1000_hw *hw = &adapter->hw; 278 *data = 0; 279 280 spin_lock_bh(&hw->mbx_lock); 281 282 hw->mac.ops.check_for_link(hw); 283 284 spin_unlock_bh(&hw->mbx_lock); 285 286 if (!(er32(STATUS) & E1000_STATUS_LU)) 287 *data = 1; 288 289 return *data; 290 } 291 292 static void igbvf_diag_test(struct net_device *netdev, 293 struct ethtool_test *eth_test, u64 *data) 294 { 295 struct igbvf_adapter *adapter = netdev_priv(netdev); 296 297 set_bit(__IGBVF_TESTING, &adapter->state); 298 299 /* Link test performed before hardware reset so autoneg doesn't 300 * interfere with test result 301 */ 302 if (igbvf_link_test(adapter, &data[0])) 303 eth_test->flags |= ETH_TEST_FL_FAILED; 304 305 clear_bit(__IGBVF_TESTING, &adapter->state); 306 msleep_interruptible(4 * 1000); 307 } 308 309 static void igbvf_get_wol(struct net_device *netdev, 310 struct ethtool_wolinfo *wol) 311 { 312 wol->supported = 0; 313 wol->wolopts = 0; 314 } 315 316 static int igbvf_set_wol(struct net_device *netdev, 317 struct ethtool_wolinfo *wol) 318 { 319 return -EOPNOTSUPP; 320 } 321 322 static int igbvf_get_coalesce(struct net_device *netdev, 323 struct ethtool_coalesce *ec, 324 struct kernel_ethtool_coalesce *kernel_coal, 325 struct netlink_ext_ack *extack) 326 { 327 struct igbvf_adapter *adapter = netdev_priv(netdev); 328 329 if (adapter->requested_itr <= 3) 330 ec->rx_coalesce_usecs = adapter->requested_itr; 331 else 332 ec->rx_coalesce_usecs = adapter->current_itr >> 2; 333 334 return 0; 335 } 336 337 static int igbvf_set_coalesce(struct net_device *netdev, 338 struct ethtool_coalesce *ec, 339 struct kernel_ethtool_coalesce *kernel_coal, 340 struct netlink_ext_ack *extack) 341 { 342 struct igbvf_adapter *adapter = netdev_priv(netdev); 343 struct e1000_hw *hw = &adapter->hw; 344 345 if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) && 346 (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) { 347 adapter->current_itr = ec->rx_coalesce_usecs << 2; 348 adapter->requested_itr = 1000000000 / 349 (adapter->current_itr * 256); 350 } else if ((ec->rx_coalesce_usecs == 3) || 351 (ec->rx_coalesce_usecs == 2)) { 352 adapter->current_itr = IGBVF_START_ITR; 353 adapter->requested_itr = ec->rx_coalesce_usecs; 354 } else if (ec->rx_coalesce_usecs == 0) { 355 /* The user's desire is to turn off interrupt throttling 356 * altogether, but due to HW limitations, we can't do that. 357 * Instead we set a very small value in EITR, which would 358 * allow ~967k interrupts per second, but allow the adapter's 359 * internal clocking to still function properly. 360 */ 361 adapter->current_itr = 4; 362 adapter->requested_itr = 1000000000 / 363 (adapter->current_itr * 256); 364 } else { 365 return -EINVAL; 366 } 367 368 writel(adapter->current_itr, 369 hw->hw_addr + adapter->rx_ring->itr_register); 370 371 return 0; 372 } 373 374 static int igbvf_nway_reset(struct net_device *netdev) 375 { 376 struct igbvf_adapter *adapter = netdev_priv(netdev); 377 378 if (netif_running(netdev)) 379 igbvf_reinit_locked(adapter); 380 return 0; 381 } 382 383 static void igbvf_get_ethtool_stats(struct net_device *netdev, 384 struct ethtool_stats *stats, 385 u64 *data) 386 { 387 struct igbvf_adapter *adapter = netdev_priv(netdev); 388 int i; 389 390 igbvf_update_stats(adapter); 391 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 392 char *p = (char *)adapter + 393 igbvf_gstrings_stats[i].stat_offset; 394 char *b = (char *)adapter + 395 igbvf_gstrings_stats[i].base_stat_offset; 396 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat == 397 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) : 398 (*(u32 *)p - *(u32 *)b)); 399 } 400 } 401 402 static int igbvf_get_sset_count(struct net_device *dev, int stringset) 403 { 404 switch (stringset) { 405 case ETH_SS_TEST: 406 return IGBVF_TEST_LEN; 407 case ETH_SS_STATS: 408 return IGBVF_GLOBAL_STATS_LEN; 409 default: 410 return -EINVAL; 411 } 412 } 413 414 static void igbvf_get_strings(struct net_device *netdev, u32 stringset, 415 u8 *data) 416 { 417 u8 *p = data; 418 int i; 419 420 switch (stringset) { 421 case ETH_SS_TEST: 422 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test)); 423 break; 424 case ETH_SS_STATS: 425 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 426 memcpy(p, igbvf_gstrings_stats[i].stat_string, 427 ETH_GSTRING_LEN); 428 p += ETH_GSTRING_LEN; 429 } 430 break; 431 } 432 } 433 434 static const struct ethtool_ops igbvf_ethtool_ops = { 435 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS, 436 .get_drvinfo = igbvf_get_drvinfo, 437 .get_regs_len = igbvf_get_regs_len, 438 .get_regs = igbvf_get_regs, 439 .get_wol = igbvf_get_wol, 440 .set_wol = igbvf_set_wol, 441 .get_msglevel = igbvf_get_msglevel, 442 .set_msglevel = igbvf_set_msglevel, 443 .nway_reset = igbvf_nway_reset, 444 .get_link = ethtool_op_get_link, 445 .get_eeprom_len = igbvf_get_eeprom_len, 446 .get_eeprom = igbvf_get_eeprom, 447 .set_eeprom = igbvf_set_eeprom, 448 .get_ringparam = igbvf_get_ringparam, 449 .set_ringparam = igbvf_set_ringparam, 450 .get_pauseparam = igbvf_get_pauseparam, 451 .set_pauseparam = igbvf_set_pauseparam, 452 .self_test = igbvf_diag_test, 453 .get_sset_count = igbvf_get_sset_count, 454 .get_strings = igbvf_get_strings, 455 .get_ethtool_stats = igbvf_get_ethtool_stats, 456 .get_coalesce = igbvf_get_coalesce, 457 .set_coalesce = igbvf_set_coalesce, 458 .get_link_ksettings = igbvf_get_link_ksettings, 459 .set_link_ksettings = igbvf_set_link_ksettings, 460 }; 461 462 void igbvf_set_ethtool_ops(struct net_device *netdev) 463 { 464 netdev->ethtool_ops = &igbvf_ethtool_ops; 465 } 466