1 /******************************************************************************* 2 3 Intel(R) 82576 Virtual Function Linux driver 4 Copyright(c) 2009 - 2010 Intel Corporation. 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms and conditions of the GNU General Public License, 8 version 2, as published by the Free Software Foundation. 9 10 This program is distributed in the hope it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 13 more details. 14 15 You should have received a copy of the GNU General Public License along with 16 this program; if not, write to the Free Software Foundation, Inc., 17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 18 19 The full GNU General Public License is included in this distribution in 20 the file called "COPYING". 21 22 Contact Information: 23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 25 26 *******************************************************************************/ 27 28 /* ethtool support for igbvf */ 29 30 #include <linux/netdevice.h> 31 #include <linux/ethtool.h> 32 #include <linux/pci.h> 33 #include <linux/vmalloc.h> 34 #include <linux/delay.h> 35 36 #include "igbvf.h" 37 #include <linux/if_vlan.h> 38 39 40 struct igbvf_stats { 41 char stat_string[ETH_GSTRING_LEN]; 42 int sizeof_stat; 43 int stat_offset; 44 int base_stat_offset; 45 }; 46 47 #define IGBVF_STAT(current, base) \ 48 sizeof(((struct igbvf_adapter *)0)->current), \ 49 offsetof(struct igbvf_adapter, current), \ 50 offsetof(struct igbvf_adapter, base) 51 52 static const struct igbvf_stats igbvf_gstrings_stats[] = { 53 { "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) }, 54 { "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) }, 55 { "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) }, 56 { "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) }, 57 { "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) }, 58 { "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) }, 59 { "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) }, 60 { "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) }, 61 { "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) }, 62 { "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) }, 63 { "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) }, 64 { "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) }, 65 { "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) }, 66 }; 67 68 #define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats) 69 70 static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = { 71 "Link test (on/offline)" 72 }; 73 74 #define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test) 75 76 static int igbvf_get_settings(struct net_device *netdev, 77 struct ethtool_cmd *ecmd) 78 { 79 struct igbvf_adapter *adapter = netdev_priv(netdev); 80 struct e1000_hw *hw = &adapter->hw; 81 u32 status; 82 83 ecmd->supported = SUPPORTED_1000baseT_Full; 84 85 ecmd->advertising = ADVERTISED_1000baseT_Full; 86 87 ecmd->port = -1; 88 ecmd->transceiver = XCVR_DUMMY1; 89 90 status = er32(STATUS); 91 if (status & E1000_STATUS_LU) { 92 if (status & E1000_STATUS_SPEED_1000) 93 ethtool_cmd_speed_set(ecmd, SPEED_1000); 94 else if (status & E1000_STATUS_SPEED_100) 95 ethtool_cmd_speed_set(ecmd, SPEED_100); 96 else 97 ethtool_cmd_speed_set(ecmd, SPEED_10); 98 99 if (status & E1000_STATUS_FD) 100 ecmd->duplex = DUPLEX_FULL; 101 else 102 ecmd->duplex = DUPLEX_HALF; 103 } else { 104 ethtool_cmd_speed_set(ecmd, -1); 105 ecmd->duplex = -1; 106 } 107 108 ecmd->autoneg = AUTONEG_DISABLE; 109 110 return 0; 111 } 112 113 static int igbvf_set_settings(struct net_device *netdev, 114 struct ethtool_cmd *ecmd) 115 { 116 return -EOPNOTSUPP; 117 } 118 119 static void igbvf_get_pauseparam(struct net_device *netdev, 120 struct ethtool_pauseparam *pause) 121 { 122 return; 123 } 124 125 static int igbvf_set_pauseparam(struct net_device *netdev, 126 struct ethtool_pauseparam *pause) 127 { 128 return -EOPNOTSUPP; 129 } 130 131 static u32 igbvf_get_rx_csum(struct net_device *netdev) 132 { 133 struct igbvf_adapter *adapter = netdev_priv(netdev); 134 return !(adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED); 135 } 136 137 static int igbvf_set_rx_csum(struct net_device *netdev, u32 data) 138 { 139 struct igbvf_adapter *adapter = netdev_priv(netdev); 140 141 if (data) 142 adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED; 143 else 144 adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED; 145 146 return 0; 147 } 148 149 static u32 igbvf_get_tx_csum(struct net_device *netdev) 150 { 151 return (netdev->features & NETIF_F_IP_CSUM) != 0; 152 } 153 154 static int igbvf_set_tx_csum(struct net_device *netdev, u32 data) 155 { 156 if (data) 157 netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM); 158 else 159 netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM); 160 return 0; 161 } 162 163 static int igbvf_set_tso(struct net_device *netdev, u32 data) 164 { 165 struct igbvf_adapter *adapter = netdev_priv(netdev); 166 167 if (data) { 168 netdev->features |= NETIF_F_TSO; 169 netdev->features |= NETIF_F_TSO6; 170 } else { 171 netdev->features &= ~NETIF_F_TSO; 172 netdev->features &= ~NETIF_F_TSO6; 173 } 174 175 dev_info(&adapter->pdev->dev, "TSO is %s\n", 176 data ? "Enabled" : "Disabled"); 177 return 0; 178 } 179 180 static u32 igbvf_get_msglevel(struct net_device *netdev) 181 { 182 struct igbvf_adapter *adapter = netdev_priv(netdev); 183 return adapter->msg_enable; 184 } 185 186 static void igbvf_set_msglevel(struct net_device *netdev, u32 data) 187 { 188 struct igbvf_adapter *adapter = netdev_priv(netdev); 189 adapter->msg_enable = data; 190 } 191 192 static int igbvf_get_regs_len(struct net_device *netdev) 193 { 194 #define IGBVF_REGS_LEN 8 195 return IGBVF_REGS_LEN * sizeof(u32); 196 } 197 198 static void igbvf_get_regs(struct net_device *netdev, 199 struct ethtool_regs *regs, void *p) 200 { 201 struct igbvf_adapter *adapter = netdev_priv(netdev); 202 struct e1000_hw *hw = &adapter->hw; 203 u32 *regs_buff = p; 204 205 memset(p, 0, IGBVF_REGS_LEN * sizeof(u32)); 206 207 regs->version = (1 << 24) | (adapter->pdev->revision << 16) | 208 adapter->pdev->device; 209 210 regs_buff[0] = er32(CTRL); 211 regs_buff[1] = er32(STATUS); 212 213 regs_buff[2] = er32(RDLEN(0)); 214 regs_buff[3] = er32(RDH(0)); 215 regs_buff[4] = er32(RDT(0)); 216 217 regs_buff[5] = er32(TDLEN(0)); 218 regs_buff[6] = er32(TDH(0)); 219 regs_buff[7] = er32(TDT(0)); 220 } 221 222 static int igbvf_get_eeprom_len(struct net_device *netdev) 223 { 224 return 0; 225 } 226 227 static int igbvf_get_eeprom(struct net_device *netdev, 228 struct ethtool_eeprom *eeprom, u8 *bytes) 229 { 230 return -EOPNOTSUPP; 231 } 232 233 static int igbvf_set_eeprom(struct net_device *netdev, 234 struct ethtool_eeprom *eeprom, u8 *bytes) 235 { 236 return -EOPNOTSUPP; 237 } 238 239 static void igbvf_get_drvinfo(struct net_device *netdev, 240 struct ethtool_drvinfo *drvinfo) 241 { 242 struct igbvf_adapter *adapter = netdev_priv(netdev); 243 char firmware_version[32] = "N/A"; 244 245 strncpy(drvinfo->driver, igbvf_driver_name, 32); 246 strncpy(drvinfo->version, igbvf_driver_version, 32); 247 strncpy(drvinfo->fw_version, firmware_version, 32); 248 strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32); 249 drvinfo->regdump_len = igbvf_get_regs_len(netdev); 250 drvinfo->eedump_len = igbvf_get_eeprom_len(netdev); 251 } 252 253 static void igbvf_get_ringparam(struct net_device *netdev, 254 struct ethtool_ringparam *ring) 255 { 256 struct igbvf_adapter *adapter = netdev_priv(netdev); 257 struct igbvf_ring *tx_ring = adapter->tx_ring; 258 struct igbvf_ring *rx_ring = adapter->rx_ring; 259 260 ring->rx_max_pending = IGBVF_MAX_RXD; 261 ring->tx_max_pending = IGBVF_MAX_TXD; 262 ring->rx_pending = rx_ring->count; 263 ring->tx_pending = tx_ring->count; 264 } 265 266 static int igbvf_set_ringparam(struct net_device *netdev, 267 struct ethtool_ringparam *ring) 268 { 269 struct igbvf_adapter *adapter = netdev_priv(netdev); 270 struct igbvf_ring *temp_ring; 271 int err = 0; 272 u32 new_rx_count, new_tx_count; 273 274 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 275 return -EINVAL; 276 277 new_rx_count = max(ring->rx_pending, (u32)IGBVF_MIN_RXD); 278 new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD); 279 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE); 280 281 new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD); 282 new_tx_count = min(new_tx_count, (u32)IGBVF_MAX_TXD); 283 new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE); 284 285 if ((new_tx_count == adapter->tx_ring->count) && 286 (new_rx_count == adapter->rx_ring->count)) { 287 /* nothing to do */ 288 return 0; 289 } 290 291 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) 292 msleep(1); 293 294 if (!netif_running(adapter->netdev)) { 295 adapter->tx_ring->count = new_tx_count; 296 adapter->rx_ring->count = new_rx_count; 297 goto clear_reset; 298 } 299 300 temp_ring = vmalloc(sizeof(struct igbvf_ring)); 301 if (!temp_ring) { 302 err = -ENOMEM; 303 goto clear_reset; 304 } 305 306 igbvf_down(adapter); 307 308 /* 309 * We can't just free everything and then setup again, 310 * because the ISRs in MSI-X mode get passed pointers 311 * to the tx and rx ring structs. 312 */ 313 if (new_tx_count != adapter->tx_ring->count) { 314 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring)); 315 316 temp_ring->count = new_tx_count; 317 err = igbvf_setup_tx_resources(adapter, temp_ring); 318 if (err) 319 goto err_setup; 320 321 igbvf_free_tx_resources(adapter->tx_ring); 322 323 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring)); 324 } 325 326 if (new_rx_count != adapter->rx_ring->count) { 327 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring)); 328 329 temp_ring->count = new_rx_count; 330 err = igbvf_setup_rx_resources(adapter, temp_ring); 331 if (err) 332 goto err_setup; 333 334 igbvf_free_rx_resources(adapter->rx_ring); 335 336 memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring)); 337 } 338 err_setup: 339 igbvf_up(adapter); 340 vfree(temp_ring); 341 clear_reset: 342 clear_bit(__IGBVF_RESETTING, &adapter->state); 343 return err; 344 } 345 346 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data) 347 { 348 struct e1000_hw *hw = &adapter->hw; 349 *data = 0; 350 351 hw->mac.ops.check_for_link(hw); 352 353 if (!(er32(STATUS) & E1000_STATUS_LU)) 354 *data = 1; 355 356 return *data; 357 } 358 359 static void igbvf_diag_test(struct net_device *netdev, 360 struct ethtool_test *eth_test, u64 *data) 361 { 362 struct igbvf_adapter *adapter = netdev_priv(netdev); 363 364 set_bit(__IGBVF_TESTING, &adapter->state); 365 366 /* 367 * Link test performed before hardware reset so autoneg doesn't 368 * interfere with test result 369 */ 370 if (igbvf_link_test(adapter, &data[0])) 371 eth_test->flags |= ETH_TEST_FL_FAILED; 372 373 clear_bit(__IGBVF_TESTING, &adapter->state); 374 msleep_interruptible(4 * 1000); 375 } 376 377 static void igbvf_get_wol(struct net_device *netdev, 378 struct ethtool_wolinfo *wol) 379 { 380 wol->supported = 0; 381 wol->wolopts = 0; 382 } 383 384 static int igbvf_set_wol(struct net_device *netdev, 385 struct ethtool_wolinfo *wol) 386 { 387 return -EOPNOTSUPP; 388 } 389 390 static int igbvf_get_coalesce(struct net_device *netdev, 391 struct ethtool_coalesce *ec) 392 { 393 struct igbvf_adapter *adapter = netdev_priv(netdev); 394 395 if (adapter->itr_setting <= 3) 396 ec->rx_coalesce_usecs = adapter->itr_setting; 397 else 398 ec->rx_coalesce_usecs = adapter->itr_setting >> 2; 399 400 return 0; 401 } 402 403 static int igbvf_set_coalesce(struct net_device *netdev, 404 struct ethtool_coalesce *ec) 405 { 406 struct igbvf_adapter *adapter = netdev_priv(netdev); 407 struct e1000_hw *hw = &adapter->hw; 408 409 if ((ec->rx_coalesce_usecs > IGBVF_MAX_ITR_USECS) || 410 ((ec->rx_coalesce_usecs > 3) && 411 (ec->rx_coalesce_usecs < IGBVF_MIN_ITR_USECS)) || 412 (ec->rx_coalesce_usecs == 2)) 413 return -EINVAL; 414 415 /* convert to rate of irq's per second */ 416 if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3) { 417 adapter->itr = IGBVF_START_ITR; 418 adapter->itr_setting = ec->rx_coalesce_usecs; 419 } else { 420 adapter->itr = ec->rx_coalesce_usecs << 2; 421 adapter->itr_setting = adapter->itr; 422 } 423 424 writel(adapter->itr, 425 hw->hw_addr + adapter->rx_ring[0].itr_register); 426 427 return 0; 428 } 429 430 static int igbvf_nway_reset(struct net_device *netdev) 431 { 432 struct igbvf_adapter *adapter = netdev_priv(netdev); 433 if (netif_running(netdev)) 434 igbvf_reinit_locked(adapter); 435 return 0; 436 } 437 438 439 static void igbvf_get_ethtool_stats(struct net_device *netdev, 440 struct ethtool_stats *stats, 441 u64 *data) 442 { 443 struct igbvf_adapter *adapter = netdev_priv(netdev); 444 int i; 445 446 igbvf_update_stats(adapter); 447 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 448 char *p = (char *)adapter + 449 igbvf_gstrings_stats[i].stat_offset; 450 char *b = (char *)adapter + 451 igbvf_gstrings_stats[i].base_stat_offset; 452 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat == 453 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) : 454 (*(u32 *)p - *(u32 *)b)); 455 } 456 457 } 458 459 static int igbvf_get_sset_count(struct net_device *dev, int stringset) 460 { 461 switch(stringset) { 462 case ETH_SS_TEST: 463 return IGBVF_TEST_LEN; 464 case ETH_SS_STATS: 465 return IGBVF_GLOBAL_STATS_LEN; 466 default: 467 return -EINVAL; 468 } 469 } 470 471 static void igbvf_get_strings(struct net_device *netdev, u32 stringset, 472 u8 *data) 473 { 474 u8 *p = data; 475 int i; 476 477 switch (stringset) { 478 case ETH_SS_TEST: 479 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test)); 480 break; 481 case ETH_SS_STATS: 482 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 483 memcpy(p, igbvf_gstrings_stats[i].stat_string, 484 ETH_GSTRING_LEN); 485 p += ETH_GSTRING_LEN; 486 } 487 break; 488 } 489 } 490 491 static const struct ethtool_ops igbvf_ethtool_ops = { 492 .get_settings = igbvf_get_settings, 493 .set_settings = igbvf_set_settings, 494 .get_drvinfo = igbvf_get_drvinfo, 495 .get_regs_len = igbvf_get_regs_len, 496 .get_regs = igbvf_get_regs, 497 .get_wol = igbvf_get_wol, 498 .set_wol = igbvf_set_wol, 499 .get_msglevel = igbvf_get_msglevel, 500 .set_msglevel = igbvf_set_msglevel, 501 .nway_reset = igbvf_nway_reset, 502 .get_link = ethtool_op_get_link, 503 .get_eeprom_len = igbvf_get_eeprom_len, 504 .get_eeprom = igbvf_get_eeprom, 505 .set_eeprom = igbvf_set_eeprom, 506 .get_ringparam = igbvf_get_ringparam, 507 .set_ringparam = igbvf_set_ringparam, 508 .get_pauseparam = igbvf_get_pauseparam, 509 .set_pauseparam = igbvf_set_pauseparam, 510 .get_rx_csum = igbvf_get_rx_csum, 511 .set_rx_csum = igbvf_set_rx_csum, 512 .get_tx_csum = igbvf_get_tx_csum, 513 .set_tx_csum = igbvf_set_tx_csum, 514 .get_sg = ethtool_op_get_sg, 515 .set_sg = ethtool_op_set_sg, 516 .get_tso = ethtool_op_get_tso, 517 .set_tso = igbvf_set_tso, 518 .self_test = igbvf_diag_test, 519 .get_sset_count = igbvf_get_sset_count, 520 .get_strings = igbvf_get_strings, 521 .get_ethtool_stats = igbvf_get_ethtool_stats, 522 .get_coalesce = igbvf_get_coalesce, 523 .set_coalesce = igbvf_set_coalesce, 524 }; 525 526 void igbvf_set_ethtool_ops(struct net_device *netdev) 527 { 528 /* have to "undeclare" const on this struct to remove warnings */ 529 SET_ETHTOOL_OPS(netdev, (struct ethtool_ops *)&igbvf_ethtool_ops); 530 } 531