1 /******************************************************************************* 2 3 Intel(R) 82576 Virtual Function Linux driver 4 Copyright(c) 2009 - 2012 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, see <http://www.gnu.org/licenses/>. 17 18 The full GNU General Public License is included in this distribution in 19 the file called "COPYING". 20 21 Contact Information: 22 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> 23 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 24 25 *******************************************************************************/ 26 27 /* ethtool support for igbvf */ 28 29 #include <linux/netdevice.h> 30 #include <linux/ethtool.h> 31 #include <linux/pci.h> 32 #include <linux/vmalloc.h> 33 #include <linux/delay.h> 34 35 #include "igbvf.h" 36 #include <linux/if_vlan.h> 37 38 struct igbvf_stats { 39 char stat_string[ETH_GSTRING_LEN]; 40 int sizeof_stat; 41 int stat_offset; 42 int base_stat_offset; 43 }; 44 45 #define IGBVF_STAT(current, base) \ 46 sizeof(((struct igbvf_adapter *)0)->current), \ 47 offsetof(struct igbvf_adapter, current), \ 48 offsetof(struct igbvf_adapter, base) 49 50 static const struct igbvf_stats igbvf_gstrings_stats[] = { 51 { "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) }, 52 { "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) }, 53 { "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) }, 54 { "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) }, 55 { "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) }, 56 { "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) }, 57 { "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) }, 58 { "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) }, 59 { "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) }, 60 { "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) }, 61 { "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) }, 62 { "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) }, 63 { "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) }, 64 }; 65 66 #define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats) 67 68 static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = { 69 "Link test (on/offline)" 70 }; 71 72 #define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test) 73 74 static int igbvf_get_settings(struct net_device *netdev, 75 struct ethtool_cmd *ecmd) 76 { 77 struct igbvf_adapter *adapter = netdev_priv(netdev); 78 struct e1000_hw *hw = &adapter->hw; 79 u32 status; 80 81 ecmd->supported = SUPPORTED_1000baseT_Full; 82 83 ecmd->advertising = ADVERTISED_1000baseT_Full; 84 85 ecmd->port = -1; 86 ecmd->transceiver = XCVR_DUMMY1; 87 88 status = er32(STATUS); 89 if (status & E1000_STATUS_LU) { 90 if (status & E1000_STATUS_SPEED_1000) 91 ethtool_cmd_speed_set(ecmd, SPEED_1000); 92 else if (status & E1000_STATUS_SPEED_100) 93 ethtool_cmd_speed_set(ecmd, SPEED_100); 94 else 95 ethtool_cmd_speed_set(ecmd, SPEED_10); 96 97 if (status & E1000_STATUS_FD) 98 ecmd->duplex = DUPLEX_FULL; 99 else 100 ecmd->duplex = DUPLEX_HALF; 101 } else { 102 ethtool_cmd_speed_set(ecmd, SPEED_UNKNOWN); 103 ecmd->duplex = DUPLEX_UNKNOWN; 104 } 105 106 ecmd->autoneg = AUTONEG_DISABLE; 107 108 return 0; 109 } 110 111 static int igbvf_set_settings(struct net_device *netdev, 112 struct ethtool_cmd *ecmd) 113 { 114 return -EOPNOTSUPP; 115 } 116 117 static void igbvf_get_pauseparam(struct net_device *netdev, 118 struct ethtool_pauseparam *pause) 119 { 120 } 121 122 static int igbvf_set_pauseparam(struct net_device *netdev, 123 struct ethtool_pauseparam *pause) 124 { 125 return -EOPNOTSUPP; 126 } 127 128 static u32 igbvf_get_msglevel(struct net_device *netdev) 129 { 130 struct igbvf_adapter *adapter = netdev_priv(netdev); 131 132 return adapter->msg_enable; 133 } 134 135 static void igbvf_set_msglevel(struct net_device *netdev, u32 data) 136 { 137 struct igbvf_adapter *adapter = netdev_priv(netdev); 138 139 adapter->msg_enable = data; 140 } 141 142 static int igbvf_get_regs_len(struct net_device *netdev) 143 { 144 #define IGBVF_REGS_LEN 8 145 return IGBVF_REGS_LEN * sizeof(u32); 146 } 147 148 static void igbvf_get_regs(struct net_device *netdev, 149 struct ethtool_regs *regs, void *p) 150 { 151 struct igbvf_adapter *adapter = netdev_priv(netdev); 152 struct e1000_hw *hw = &adapter->hw; 153 u32 *regs_buff = p; 154 155 memset(p, 0, IGBVF_REGS_LEN * sizeof(u32)); 156 157 regs->version = (1 << 24) | (adapter->pdev->revision << 16) | 158 adapter->pdev->device; 159 160 regs_buff[0] = er32(CTRL); 161 regs_buff[1] = er32(STATUS); 162 163 regs_buff[2] = er32(RDLEN(0)); 164 regs_buff[3] = er32(RDH(0)); 165 regs_buff[4] = er32(RDT(0)); 166 167 regs_buff[5] = er32(TDLEN(0)); 168 regs_buff[6] = er32(TDH(0)); 169 regs_buff[7] = er32(TDT(0)); 170 } 171 172 static int igbvf_get_eeprom_len(struct net_device *netdev) 173 { 174 return 0; 175 } 176 177 static int igbvf_get_eeprom(struct net_device *netdev, 178 struct ethtool_eeprom *eeprom, u8 *bytes) 179 { 180 return -EOPNOTSUPP; 181 } 182 183 static int igbvf_set_eeprom(struct net_device *netdev, 184 struct ethtool_eeprom *eeprom, u8 *bytes) 185 { 186 return -EOPNOTSUPP; 187 } 188 189 static void igbvf_get_drvinfo(struct net_device *netdev, 190 struct ethtool_drvinfo *drvinfo) 191 { 192 struct igbvf_adapter *adapter = netdev_priv(netdev); 193 194 strlcpy(drvinfo->driver, igbvf_driver_name, sizeof(drvinfo->driver)); 195 strlcpy(drvinfo->version, igbvf_driver_version, 196 sizeof(drvinfo->version)); 197 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 198 sizeof(drvinfo->bus_info)); 199 drvinfo->regdump_len = igbvf_get_regs_len(netdev); 200 drvinfo->eedump_len = igbvf_get_eeprom_len(netdev); 201 } 202 203 static void igbvf_get_ringparam(struct net_device *netdev, 204 struct ethtool_ringparam *ring) 205 { 206 struct igbvf_adapter *adapter = netdev_priv(netdev); 207 struct igbvf_ring *tx_ring = adapter->tx_ring; 208 struct igbvf_ring *rx_ring = adapter->rx_ring; 209 210 ring->rx_max_pending = IGBVF_MAX_RXD; 211 ring->tx_max_pending = IGBVF_MAX_TXD; 212 ring->rx_pending = rx_ring->count; 213 ring->tx_pending = tx_ring->count; 214 } 215 216 static int igbvf_set_ringparam(struct net_device *netdev, 217 struct ethtool_ringparam *ring) 218 { 219 struct igbvf_adapter *adapter = netdev_priv(netdev); 220 struct igbvf_ring *temp_ring; 221 int err = 0; 222 u32 new_rx_count, new_tx_count; 223 224 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 225 return -EINVAL; 226 227 new_rx_count = max_t(u32, ring->rx_pending, IGBVF_MIN_RXD); 228 new_rx_count = min_t(u32, new_rx_count, IGBVF_MAX_RXD); 229 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE); 230 231 new_tx_count = max_t(u32, ring->tx_pending, IGBVF_MIN_TXD); 232 new_tx_count = min_t(u32, new_tx_count, IGBVF_MAX_TXD); 233 new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE); 234 235 if ((new_tx_count == adapter->tx_ring->count) && 236 (new_rx_count == adapter->rx_ring->count)) { 237 /* nothing to do */ 238 return 0; 239 } 240 241 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) 242 usleep_range(1000, 2000); 243 244 if (!netif_running(adapter->netdev)) { 245 adapter->tx_ring->count = new_tx_count; 246 adapter->rx_ring->count = new_rx_count; 247 goto clear_reset; 248 } 249 250 temp_ring = vmalloc(sizeof(struct igbvf_ring)); 251 if (!temp_ring) { 252 err = -ENOMEM; 253 goto clear_reset; 254 } 255 256 igbvf_down(adapter); 257 258 /* We can't just free everything and then setup again, 259 * because the ISRs in MSI-X mode get passed pointers 260 * to the Tx and Rx ring structs. 261 */ 262 if (new_tx_count != adapter->tx_ring->count) { 263 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring)); 264 265 temp_ring->count = new_tx_count; 266 err = igbvf_setup_tx_resources(adapter, temp_ring); 267 if (err) 268 goto err_setup; 269 270 igbvf_free_tx_resources(adapter->tx_ring); 271 272 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring)); 273 } 274 275 if (new_rx_count != adapter->rx_ring->count) { 276 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring)); 277 278 temp_ring->count = new_rx_count; 279 err = igbvf_setup_rx_resources(adapter, temp_ring); 280 if (err) 281 goto err_setup; 282 283 igbvf_free_rx_resources(adapter->rx_ring); 284 285 memcpy(adapter->rx_ring, temp_ring, sizeof(struct igbvf_ring)); 286 } 287 err_setup: 288 igbvf_up(adapter); 289 vfree(temp_ring); 290 clear_reset: 291 clear_bit(__IGBVF_RESETTING, &adapter->state); 292 return err; 293 } 294 295 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data) 296 { 297 struct e1000_hw *hw = &adapter->hw; 298 *data = 0; 299 300 hw->mac.ops.check_for_link(hw); 301 302 if (!(er32(STATUS) & E1000_STATUS_LU)) 303 *data = 1; 304 305 return *data; 306 } 307 308 static void igbvf_diag_test(struct net_device *netdev, 309 struct ethtool_test *eth_test, u64 *data) 310 { 311 struct igbvf_adapter *adapter = netdev_priv(netdev); 312 313 set_bit(__IGBVF_TESTING, &adapter->state); 314 315 /* Link test performed before hardware reset so autoneg doesn't 316 * interfere with test result 317 */ 318 if (igbvf_link_test(adapter, &data[0])) 319 eth_test->flags |= ETH_TEST_FL_FAILED; 320 321 clear_bit(__IGBVF_TESTING, &adapter->state); 322 msleep_interruptible(4 * 1000); 323 } 324 325 static void igbvf_get_wol(struct net_device *netdev, 326 struct ethtool_wolinfo *wol) 327 { 328 wol->supported = 0; 329 wol->wolopts = 0; 330 } 331 332 static int igbvf_set_wol(struct net_device *netdev, 333 struct ethtool_wolinfo *wol) 334 { 335 return -EOPNOTSUPP; 336 } 337 338 static int igbvf_get_coalesce(struct net_device *netdev, 339 struct ethtool_coalesce *ec) 340 { 341 struct igbvf_adapter *adapter = netdev_priv(netdev); 342 343 if (adapter->requested_itr <= 3) 344 ec->rx_coalesce_usecs = adapter->requested_itr; 345 else 346 ec->rx_coalesce_usecs = adapter->current_itr >> 2; 347 348 return 0; 349 } 350 351 static int igbvf_set_coalesce(struct net_device *netdev, 352 struct ethtool_coalesce *ec) 353 { 354 struct igbvf_adapter *adapter = netdev_priv(netdev); 355 struct e1000_hw *hw = &adapter->hw; 356 357 if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) && 358 (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) { 359 adapter->current_itr = ec->rx_coalesce_usecs << 2; 360 adapter->requested_itr = 1000000000 / 361 (adapter->current_itr * 256); 362 } else if ((ec->rx_coalesce_usecs == 3) || 363 (ec->rx_coalesce_usecs == 2)) { 364 adapter->current_itr = IGBVF_START_ITR; 365 adapter->requested_itr = ec->rx_coalesce_usecs; 366 } else if (ec->rx_coalesce_usecs == 0) { 367 /* The user's desire is to turn off interrupt throttling 368 * altogether, but due to HW limitations, we can't do that. 369 * Instead we set a very small value in EITR, which would 370 * allow ~967k interrupts per second, but allow the adapter's 371 * internal clocking to still function properly. 372 */ 373 adapter->current_itr = 4; 374 adapter->requested_itr = 1000000000 / 375 (adapter->current_itr * 256); 376 } else { 377 return -EINVAL; 378 } 379 380 writel(adapter->current_itr, 381 hw->hw_addr + adapter->rx_ring->itr_register); 382 383 return 0; 384 } 385 386 static int igbvf_nway_reset(struct net_device *netdev) 387 { 388 struct igbvf_adapter *adapter = netdev_priv(netdev); 389 390 if (netif_running(netdev)) 391 igbvf_reinit_locked(adapter); 392 return 0; 393 } 394 395 static void igbvf_get_ethtool_stats(struct net_device *netdev, 396 struct ethtool_stats *stats, 397 u64 *data) 398 { 399 struct igbvf_adapter *adapter = netdev_priv(netdev); 400 int i; 401 402 igbvf_update_stats(adapter); 403 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 404 char *p = (char *)adapter + 405 igbvf_gstrings_stats[i].stat_offset; 406 char *b = (char *)adapter + 407 igbvf_gstrings_stats[i].base_stat_offset; 408 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat == 409 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) : 410 (*(u32 *)p - *(u32 *)b)); 411 } 412 } 413 414 static int igbvf_get_sset_count(struct net_device *dev, int stringset) 415 { 416 switch (stringset) { 417 case ETH_SS_TEST: 418 return IGBVF_TEST_LEN; 419 case ETH_SS_STATS: 420 return IGBVF_GLOBAL_STATS_LEN; 421 default: 422 return -EINVAL; 423 } 424 } 425 426 static void igbvf_get_strings(struct net_device *netdev, u32 stringset, 427 u8 *data) 428 { 429 u8 *p = data; 430 int i; 431 432 switch (stringset) { 433 case ETH_SS_TEST: 434 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test)); 435 break; 436 case ETH_SS_STATS: 437 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 438 memcpy(p, igbvf_gstrings_stats[i].stat_string, 439 ETH_GSTRING_LEN); 440 p += ETH_GSTRING_LEN; 441 } 442 break; 443 } 444 } 445 446 static const struct ethtool_ops igbvf_ethtool_ops = { 447 .get_settings = igbvf_get_settings, 448 .set_settings = igbvf_set_settings, 449 .get_drvinfo = igbvf_get_drvinfo, 450 .get_regs_len = igbvf_get_regs_len, 451 .get_regs = igbvf_get_regs, 452 .get_wol = igbvf_get_wol, 453 .set_wol = igbvf_set_wol, 454 .get_msglevel = igbvf_get_msglevel, 455 .set_msglevel = igbvf_set_msglevel, 456 .nway_reset = igbvf_nway_reset, 457 .get_link = ethtool_op_get_link, 458 .get_eeprom_len = igbvf_get_eeprom_len, 459 .get_eeprom = igbvf_get_eeprom, 460 .set_eeprom = igbvf_set_eeprom, 461 .get_ringparam = igbvf_get_ringparam, 462 .set_ringparam = igbvf_set_ringparam, 463 .get_pauseparam = igbvf_get_pauseparam, 464 .set_pauseparam = igbvf_set_pauseparam, 465 .self_test = igbvf_diag_test, 466 .get_sset_count = igbvf_get_sset_count, 467 .get_strings = igbvf_get_strings, 468 .get_ethtool_stats = igbvf_get_ethtool_stats, 469 .get_coalesce = igbvf_get_coalesce, 470 .set_coalesce = igbvf_set_coalesce, 471 }; 472 473 void igbvf_set_ethtool_ops(struct net_device *netdev) 474 { 475 netdev->ethtool_ops = &igbvf_ethtool_ops; 476 } 477