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_link_ksettings(struct net_device *netdev, 75 struct ethtool_link_ksettings *cmd) 76 { 77 struct igbvf_adapter *adapter = netdev_priv(netdev); 78 struct e1000_hw *hw = &adapter->hw; 79 u32 status; 80 81 ethtool_link_ksettings_zero_link_mode(cmd, supported); 82 ethtool_link_ksettings_add_link_mode(cmd, supported, 1000baseT_Full); 83 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 84 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1000baseT_Full); 85 86 cmd->base.port = -1; 87 88 status = er32(STATUS); 89 if (status & E1000_STATUS_LU) { 90 if (status & E1000_STATUS_SPEED_1000) 91 cmd->base.speed = SPEED_1000; 92 else if (status & E1000_STATUS_SPEED_100) 93 cmd->base.speed = SPEED_100; 94 else 95 cmd->base.speed = SPEED_10; 96 97 if (status & E1000_STATUS_FD) 98 cmd->base.duplex = DUPLEX_FULL; 99 else 100 cmd->base.duplex = DUPLEX_HALF; 101 } else { 102 cmd->base.speed = SPEED_UNKNOWN; 103 cmd->base.duplex = DUPLEX_UNKNOWN; 104 } 105 106 cmd->base.autoneg = AUTONEG_DISABLE; 107 108 return 0; 109 } 110 111 static int igbvf_set_link_ksettings(struct net_device *netdev, 112 const struct ethtool_link_ksettings *cmd) 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 = (1u << 24) | 158 (adapter->pdev->revision << 16) | 159 adapter->pdev->device; 160 161 regs_buff[0] = er32(CTRL); 162 regs_buff[1] = er32(STATUS); 163 164 regs_buff[2] = er32(RDLEN(0)); 165 regs_buff[3] = er32(RDH(0)); 166 regs_buff[4] = er32(RDT(0)); 167 168 regs_buff[5] = er32(TDLEN(0)); 169 regs_buff[6] = er32(TDH(0)); 170 regs_buff[7] = er32(TDT(0)); 171 } 172 173 static int igbvf_get_eeprom_len(struct net_device *netdev) 174 { 175 return 0; 176 } 177 178 static int igbvf_get_eeprom(struct net_device *netdev, 179 struct ethtool_eeprom *eeprom, u8 *bytes) 180 { 181 return -EOPNOTSUPP; 182 } 183 184 static int igbvf_set_eeprom(struct net_device *netdev, 185 struct ethtool_eeprom *eeprom, u8 *bytes) 186 { 187 return -EOPNOTSUPP; 188 } 189 190 static void igbvf_get_drvinfo(struct net_device *netdev, 191 struct ethtool_drvinfo *drvinfo) 192 { 193 struct igbvf_adapter *adapter = netdev_priv(netdev); 194 195 strlcpy(drvinfo->driver, igbvf_driver_name, sizeof(drvinfo->driver)); 196 strlcpy(drvinfo->version, igbvf_driver_version, 197 sizeof(drvinfo->version)); 198 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 199 sizeof(drvinfo->bus_info)); 200 } 201 202 static void igbvf_get_ringparam(struct net_device *netdev, 203 struct ethtool_ringparam *ring) 204 { 205 struct igbvf_adapter *adapter = netdev_priv(netdev); 206 struct igbvf_ring *tx_ring = adapter->tx_ring; 207 struct igbvf_ring *rx_ring = adapter->rx_ring; 208 209 ring->rx_max_pending = IGBVF_MAX_RXD; 210 ring->tx_max_pending = IGBVF_MAX_TXD; 211 ring->rx_pending = rx_ring->count; 212 ring->tx_pending = tx_ring->count; 213 } 214 215 static int igbvf_set_ringparam(struct net_device *netdev, 216 struct ethtool_ringparam *ring) 217 { 218 struct igbvf_adapter *adapter = netdev_priv(netdev); 219 struct igbvf_ring *temp_ring; 220 int err = 0; 221 u32 new_rx_count, new_tx_count; 222 223 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 224 return -EINVAL; 225 226 new_rx_count = max_t(u32, ring->rx_pending, IGBVF_MIN_RXD); 227 new_rx_count = min_t(u32, new_rx_count, IGBVF_MAX_RXD); 228 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE); 229 230 new_tx_count = max_t(u32, ring->tx_pending, IGBVF_MIN_TXD); 231 new_tx_count = min_t(u32, new_tx_count, IGBVF_MAX_TXD); 232 new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE); 233 234 if ((new_tx_count == adapter->tx_ring->count) && 235 (new_rx_count == adapter->rx_ring->count)) { 236 /* nothing to do */ 237 return 0; 238 } 239 240 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) 241 usleep_range(1000, 2000); 242 243 if (!netif_running(adapter->netdev)) { 244 adapter->tx_ring->count = new_tx_count; 245 adapter->rx_ring->count = new_rx_count; 246 goto clear_reset; 247 } 248 249 temp_ring = vmalloc(sizeof(struct igbvf_ring)); 250 if (!temp_ring) { 251 err = -ENOMEM; 252 goto clear_reset; 253 } 254 255 igbvf_down(adapter); 256 257 /* We can't just free everything and then setup again, 258 * because the ISRs in MSI-X mode get passed pointers 259 * to the Tx and Rx ring structs. 260 */ 261 if (new_tx_count != adapter->tx_ring->count) { 262 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring)); 263 264 temp_ring->count = new_tx_count; 265 err = igbvf_setup_tx_resources(adapter, temp_ring); 266 if (err) 267 goto err_setup; 268 269 igbvf_free_tx_resources(adapter->tx_ring); 270 271 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring)); 272 } 273 274 if (new_rx_count != adapter->rx_ring->count) { 275 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring)); 276 277 temp_ring->count = new_rx_count; 278 err = igbvf_setup_rx_resources(adapter, temp_ring); 279 if (err) 280 goto err_setup; 281 282 igbvf_free_rx_resources(adapter->rx_ring); 283 284 memcpy(adapter->rx_ring, temp_ring, sizeof(struct igbvf_ring)); 285 } 286 err_setup: 287 igbvf_up(adapter); 288 vfree(temp_ring); 289 clear_reset: 290 clear_bit(__IGBVF_RESETTING, &adapter->state); 291 return err; 292 } 293 294 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data) 295 { 296 struct e1000_hw *hw = &adapter->hw; 297 *data = 0; 298 299 spin_lock_bh(&hw->mbx_lock); 300 301 hw->mac.ops.check_for_link(hw); 302 303 spin_unlock_bh(&hw->mbx_lock); 304 305 if (!(er32(STATUS) & E1000_STATUS_LU)) 306 *data = 1; 307 308 return *data; 309 } 310 311 static void igbvf_diag_test(struct net_device *netdev, 312 struct ethtool_test *eth_test, u64 *data) 313 { 314 struct igbvf_adapter *adapter = netdev_priv(netdev); 315 316 set_bit(__IGBVF_TESTING, &adapter->state); 317 318 /* Link test performed before hardware reset so autoneg doesn't 319 * interfere with test result 320 */ 321 if (igbvf_link_test(adapter, &data[0])) 322 eth_test->flags |= ETH_TEST_FL_FAILED; 323 324 clear_bit(__IGBVF_TESTING, &adapter->state); 325 msleep_interruptible(4 * 1000); 326 } 327 328 static void igbvf_get_wol(struct net_device *netdev, 329 struct ethtool_wolinfo *wol) 330 { 331 wol->supported = 0; 332 wol->wolopts = 0; 333 } 334 335 static int igbvf_set_wol(struct net_device *netdev, 336 struct ethtool_wolinfo *wol) 337 { 338 return -EOPNOTSUPP; 339 } 340 341 static int igbvf_get_coalesce(struct net_device *netdev, 342 struct ethtool_coalesce *ec) 343 { 344 struct igbvf_adapter *adapter = netdev_priv(netdev); 345 346 if (adapter->requested_itr <= 3) 347 ec->rx_coalesce_usecs = adapter->requested_itr; 348 else 349 ec->rx_coalesce_usecs = adapter->current_itr >> 2; 350 351 return 0; 352 } 353 354 static int igbvf_set_coalesce(struct net_device *netdev, 355 struct ethtool_coalesce *ec) 356 { 357 struct igbvf_adapter *adapter = netdev_priv(netdev); 358 struct e1000_hw *hw = &adapter->hw; 359 360 if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) && 361 (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) { 362 adapter->current_itr = ec->rx_coalesce_usecs << 2; 363 adapter->requested_itr = 1000000000 / 364 (adapter->current_itr * 256); 365 } else if ((ec->rx_coalesce_usecs == 3) || 366 (ec->rx_coalesce_usecs == 2)) { 367 adapter->current_itr = IGBVF_START_ITR; 368 adapter->requested_itr = ec->rx_coalesce_usecs; 369 } else if (ec->rx_coalesce_usecs == 0) { 370 /* The user's desire is to turn off interrupt throttling 371 * altogether, but due to HW limitations, we can't do that. 372 * Instead we set a very small value in EITR, which would 373 * allow ~967k interrupts per second, but allow the adapter's 374 * internal clocking to still function properly. 375 */ 376 adapter->current_itr = 4; 377 adapter->requested_itr = 1000000000 / 378 (adapter->current_itr * 256); 379 } else { 380 return -EINVAL; 381 } 382 383 writel(adapter->current_itr, 384 hw->hw_addr + adapter->rx_ring->itr_register); 385 386 return 0; 387 } 388 389 static int igbvf_nway_reset(struct net_device *netdev) 390 { 391 struct igbvf_adapter *adapter = netdev_priv(netdev); 392 393 if (netif_running(netdev)) 394 igbvf_reinit_locked(adapter); 395 return 0; 396 } 397 398 static void igbvf_get_ethtool_stats(struct net_device *netdev, 399 struct ethtool_stats *stats, 400 u64 *data) 401 { 402 struct igbvf_adapter *adapter = netdev_priv(netdev); 403 int i; 404 405 igbvf_update_stats(adapter); 406 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 407 char *p = (char *)adapter + 408 igbvf_gstrings_stats[i].stat_offset; 409 char *b = (char *)adapter + 410 igbvf_gstrings_stats[i].base_stat_offset; 411 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat == 412 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) : 413 (*(u32 *)p - *(u32 *)b)); 414 } 415 } 416 417 static int igbvf_get_sset_count(struct net_device *dev, int stringset) 418 { 419 switch (stringset) { 420 case ETH_SS_TEST: 421 return IGBVF_TEST_LEN; 422 case ETH_SS_STATS: 423 return IGBVF_GLOBAL_STATS_LEN; 424 default: 425 return -EINVAL; 426 } 427 } 428 429 static void igbvf_get_strings(struct net_device *netdev, u32 stringset, 430 u8 *data) 431 { 432 u8 *p = data; 433 int i; 434 435 switch (stringset) { 436 case ETH_SS_TEST: 437 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test)); 438 break; 439 case ETH_SS_STATS: 440 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 441 memcpy(p, igbvf_gstrings_stats[i].stat_string, 442 ETH_GSTRING_LEN); 443 p += ETH_GSTRING_LEN; 444 } 445 break; 446 } 447 } 448 449 static const struct ethtool_ops igbvf_ethtool_ops = { 450 .get_drvinfo = igbvf_get_drvinfo, 451 .get_regs_len = igbvf_get_regs_len, 452 .get_regs = igbvf_get_regs, 453 .get_wol = igbvf_get_wol, 454 .set_wol = igbvf_set_wol, 455 .get_msglevel = igbvf_get_msglevel, 456 .set_msglevel = igbvf_set_msglevel, 457 .nway_reset = igbvf_nway_reset, 458 .get_link = ethtool_op_get_link, 459 .get_eeprom_len = igbvf_get_eeprom_len, 460 .get_eeprom = igbvf_get_eeprom, 461 .set_eeprom = igbvf_set_eeprom, 462 .get_ringparam = igbvf_get_ringparam, 463 .set_ringparam = igbvf_set_ringparam, 464 .get_pauseparam = igbvf_get_pauseparam, 465 .set_pauseparam = igbvf_set_pauseparam, 466 .self_test = igbvf_diag_test, 467 .get_sset_count = igbvf_get_sset_count, 468 .get_strings = igbvf_get_strings, 469 .get_ethtool_stats = igbvf_get_ethtool_stats, 470 .get_coalesce = igbvf_get_coalesce, 471 .set_coalesce = igbvf_set_coalesce, 472 .get_link_ksettings = igbvf_get_link_ksettings, 473 .set_link_ksettings = igbvf_set_link_ksettings, 474 }; 475 476 void igbvf_set_ethtool_ops(struct net_device *netdev) 477 { 478 netdev->ethtool_ops = &igbvf_ethtool_ops; 479 } 480