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