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, 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, SPEED_UNKNOWN); 105 ecmd->duplex = DUPLEX_UNKNOWN; 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 } 123 124 static int igbvf_set_pauseparam(struct net_device *netdev, 125 struct ethtool_pauseparam *pause) 126 { 127 return -EOPNOTSUPP; 128 } 129 130 static u32 igbvf_get_msglevel(struct net_device *netdev) 131 { 132 struct igbvf_adapter *adapter = netdev_priv(netdev); 133 return adapter->msg_enable; 134 } 135 136 static void igbvf_set_msglevel(struct net_device *netdev, u32 data) 137 { 138 struct igbvf_adapter *adapter = netdev_priv(netdev); 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(ring->rx_pending, (u32)IGBVF_MIN_RXD); 228 new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD); 229 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE); 230 231 new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD); 232 new_tx_count = min(new_tx_count, (u32)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 msleep(1); 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 /* 259 * We can't just free everything and then setup again, 260 * because the ISRs in MSI-X mode get passed pointers 261 * to the tx and rx ring structs. 262 */ 263 if (new_tx_count != adapter->tx_ring->count) { 264 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring)); 265 266 temp_ring->count = new_tx_count; 267 err = igbvf_setup_tx_resources(adapter, temp_ring); 268 if (err) 269 goto err_setup; 270 271 igbvf_free_tx_resources(adapter->tx_ring); 272 273 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring)); 274 } 275 276 if (new_rx_count != adapter->rx_ring->count) { 277 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring)); 278 279 temp_ring->count = new_rx_count; 280 err = igbvf_setup_rx_resources(adapter, temp_ring); 281 if (err) 282 goto err_setup; 283 284 igbvf_free_rx_resources(adapter->rx_ring); 285 286 memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring)); 287 } 288 err_setup: 289 igbvf_up(adapter); 290 vfree(temp_ring); 291 clear_reset: 292 clear_bit(__IGBVF_RESETTING, &adapter->state); 293 return err; 294 } 295 296 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data) 297 { 298 struct e1000_hw *hw = &adapter->hw; 299 *data = 0; 300 301 hw->mac.ops.check_for_link(hw); 302 303 if (!(er32(STATUS) & E1000_STATUS_LU)) 304 *data = 1; 305 306 return *data; 307 } 308 309 static void igbvf_diag_test(struct net_device *netdev, 310 struct ethtool_test *eth_test, u64 *data) 311 { 312 struct igbvf_adapter *adapter = netdev_priv(netdev); 313 314 set_bit(__IGBVF_TESTING, &adapter->state); 315 316 /* 317 * Link test performed before hardware reset so autoneg doesn't 318 * interfere with test result 319 */ 320 if (igbvf_link_test(adapter, &data[0])) 321 eth_test->flags |= ETH_TEST_FL_FAILED; 322 323 clear_bit(__IGBVF_TESTING, &adapter->state); 324 msleep_interruptible(4 * 1000); 325 } 326 327 static void igbvf_get_wol(struct net_device *netdev, 328 struct ethtool_wolinfo *wol) 329 { 330 wol->supported = 0; 331 wol->wolopts = 0; 332 } 333 334 static int igbvf_set_wol(struct net_device *netdev, 335 struct ethtool_wolinfo *wol) 336 { 337 return -EOPNOTSUPP; 338 } 339 340 static int igbvf_get_coalesce(struct net_device *netdev, 341 struct ethtool_coalesce *ec) 342 { 343 struct igbvf_adapter *adapter = netdev_priv(netdev); 344 345 if (adapter->requested_itr <= 3) 346 ec->rx_coalesce_usecs = adapter->requested_itr; 347 else 348 ec->rx_coalesce_usecs = adapter->current_itr >> 2; 349 350 return 0; 351 } 352 353 static int igbvf_set_coalesce(struct net_device *netdev, 354 struct ethtool_coalesce *ec) 355 { 356 struct igbvf_adapter *adapter = netdev_priv(netdev); 357 struct e1000_hw *hw = &adapter->hw; 358 359 if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) && 360 (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) { 361 adapter->current_itr = ec->rx_coalesce_usecs << 2; 362 adapter->requested_itr = 1000000000 / 363 (adapter->current_itr * 256); 364 } else if ((ec->rx_coalesce_usecs == 3) || 365 (ec->rx_coalesce_usecs == 2)) { 366 adapter->current_itr = IGBVF_START_ITR; 367 adapter->requested_itr = ec->rx_coalesce_usecs; 368 } else if (ec->rx_coalesce_usecs == 0) { 369 /* 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 writel(adapter->current_itr, 383 hw->hw_addr + adapter->rx_ring->itr_register); 384 385 return 0; 386 } 387 388 static int igbvf_nway_reset(struct net_device *netdev) 389 { 390 struct igbvf_adapter *adapter = netdev_priv(netdev); 391 if (netif_running(netdev)) 392 igbvf_reinit_locked(adapter); 393 return 0; 394 } 395 396 397 static void igbvf_get_ethtool_stats(struct net_device *netdev, 398 struct ethtool_stats *stats, 399 u64 *data) 400 { 401 struct igbvf_adapter *adapter = netdev_priv(netdev); 402 int i; 403 404 igbvf_update_stats(adapter); 405 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 406 char *p = (char *)adapter + 407 igbvf_gstrings_stats[i].stat_offset; 408 char *b = (char *)adapter + 409 igbvf_gstrings_stats[i].base_stat_offset; 410 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat == 411 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) : 412 (*(u32 *)p - *(u32 *)b)); 413 } 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_settings = igbvf_get_settings, 451 .set_settings = igbvf_set_settings, 452 .get_drvinfo = igbvf_get_drvinfo, 453 .get_regs_len = igbvf_get_regs_len, 454 .get_regs = igbvf_get_regs, 455 .get_wol = igbvf_get_wol, 456 .set_wol = igbvf_set_wol, 457 .get_msglevel = igbvf_get_msglevel, 458 .set_msglevel = igbvf_set_msglevel, 459 .nway_reset = igbvf_nway_reset, 460 .get_link = ethtool_op_get_link, 461 .get_eeprom_len = igbvf_get_eeprom_len, 462 .get_eeprom = igbvf_get_eeprom, 463 .set_eeprom = igbvf_set_eeprom, 464 .get_ringparam = igbvf_get_ringparam, 465 .set_ringparam = igbvf_set_ringparam, 466 .get_pauseparam = igbvf_get_pauseparam, 467 .set_pauseparam = igbvf_set_pauseparam, 468 .self_test = igbvf_diag_test, 469 .get_sset_count = igbvf_get_sset_count, 470 .get_strings = igbvf_get_strings, 471 .get_ethtool_stats = igbvf_get_ethtool_stats, 472 .get_coalesce = igbvf_get_coalesce, 473 .set_coalesce = igbvf_set_coalesce, 474 }; 475 476 void igbvf_set_ethtool_ops(struct net_device *netdev) 477 { 478 netdev->ethtool_ops = &igbvf_ethtool_ops; 479 } 480