1 // SPDX-License-Identifier: GPL-2.0 2 /******************************************************************************* 3 4 Intel(R) 82576 Virtual Function Linux driver 5 Copyright(c) 2009 - 2012 Intel Corporation. 6 7 This program is free software; you can redistribute it and/or modify it 8 under the terms and conditions of the GNU General Public License, 9 version 2, as published by the Free Software Foundation. 10 11 This program is distributed in the hope it will be useful, but WITHOUT 12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 14 more details. 15 16 You should have received a copy of the GNU General Public License along with 17 this program; if not, see <http://www.gnu.org/licenses/>. 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 struct igbvf_stats { 40 char stat_string[ETH_GSTRING_LEN]; 41 int sizeof_stat; 42 int stat_offset; 43 int base_stat_offset; 44 }; 45 46 #define IGBVF_STAT(current, base) \ 47 sizeof(((struct igbvf_adapter *)0)->current), \ 48 offsetof(struct igbvf_adapter, current), \ 49 offsetof(struct igbvf_adapter, base) 50 51 static const struct igbvf_stats igbvf_gstrings_stats[] = { 52 { "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) }, 53 { "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) }, 54 { "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) }, 55 { "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) }, 56 { "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) }, 57 { "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) }, 58 { "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) }, 59 { "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) }, 60 { "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) }, 61 { "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) }, 62 { "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) }, 63 { "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) }, 64 { "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) }, 65 }; 66 67 #define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats) 68 69 static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = { 70 "Link test (on/offline)" 71 }; 72 73 #define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test) 74 75 static int igbvf_get_link_ksettings(struct net_device *netdev, 76 struct ethtool_link_ksettings *cmd) 77 { 78 struct igbvf_adapter *adapter = netdev_priv(netdev); 79 struct e1000_hw *hw = &adapter->hw; 80 u32 status; 81 82 ethtool_link_ksettings_zero_link_mode(cmd, supported); 83 ethtool_link_ksettings_add_link_mode(cmd, supported, 1000baseT_Full); 84 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 85 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1000baseT_Full); 86 87 cmd->base.port = -1; 88 89 status = er32(STATUS); 90 if (status & E1000_STATUS_LU) { 91 if (status & E1000_STATUS_SPEED_1000) 92 cmd->base.speed = SPEED_1000; 93 else if (status & E1000_STATUS_SPEED_100) 94 cmd->base.speed = SPEED_100; 95 else 96 cmd->base.speed = SPEED_10; 97 98 if (status & E1000_STATUS_FD) 99 cmd->base.duplex = DUPLEX_FULL; 100 else 101 cmd->base.duplex = DUPLEX_HALF; 102 } else { 103 cmd->base.speed = SPEED_UNKNOWN; 104 cmd->base.duplex = DUPLEX_UNKNOWN; 105 } 106 107 cmd->base.autoneg = AUTONEG_DISABLE; 108 109 return 0; 110 } 111 112 static int igbvf_set_link_ksettings(struct net_device *netdev, 113 const struct ethtool_link_ksettings *cmd) 114 { 115 return -EOPNOTSUPP; 116 } 117 118 static void igbvf_get_pauseparam(struct net_device *netdev, 119 struct ethtool_pauseparam *pause) 120 { 121 } 122 123 static int igbvf_set_pauseparam(struct net_device *netdev, 124 struct ethtool_pauseparam *pause) 125 { 126 return -EOPNOTSUPP; 127 } 128 129 static u32 igbvf_get_msglevel(struct net_device *netdev) 130 { 131 struct igbvf_adapter *adapter = netdev_priv(netdev); 132 133 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); 139 140 adapter->msg_enable = data; 141 } 142 143 static int igbvf_get_regs_len(struct net_device *netdev) 144 { 145 #define IGBVF_REGS_LEN 8 146 return IGBVF_REGS_LEN * sizeof(u32); 147 } 148 149 static void igbvf_get_regs(struct net_device *netdev, 150 struct ethtool_regs *regs, void *p) 151 { 152 struct igbvf_adapter *adapter = netdev_priv(netdev); 153 struct e1000_hw *hw = &adapter->hw; 154 u32 *regs_buff = p; 155 156 memset(p, 0, IGBVF_REGS_LEN * sizeof(u32)); 157 158 regs->version = (1u << 24) | 159 (adapter->pdev->revision << 16) | 160 adapter->pdev->device; 161 162 regs_buff[0] = er32(CTRL); 163 regs_buff[1] = er32(STATUS); 164 165 regs_buff[2] = er32(RDLEN(0)); 166 regs_buff[3] = er32(RDH(0)); 167 regs_buff[4] = er32(RDT(0)); 168 169 regs_buff[5] = er32(TDLEN(0)); 170 regs_buff[6] = er32(TDH(0)); 171 regs_buff[7] = er32(TDT(0)); 172 } 173 174 static int igbvf_get_eeprom_len(struct net_device *netdev) 175 { 176 return 0; 177 } 178 179 static int igbvf_get_eeprom(struct net_device *netdev, 180 struct ethtool_eeprom *eeprom, u8 *bytes) 181 { 182 return -EOPNOTSUPP; 183 } 184 185 static int igbvf_set_eeprom(struct net_device *netdev, 186 struct ethtool_eeprom *eeprom, u8 *bytes) 187 { 188 return -EOPNOTSUPP; 189 } 190 191 static void igbvf_get_drvinfo(struct net_device *netdev, 192 struct ethtool_drvinfo *drvinfo) 193 { 194 struct igbvf_adapter *adapter = netdev_priv(netdev); 195 196 strlcpy(drvinfo->driver, igbvf_driver_name, sizeof(drvinfo->driver)); 197 strlcpy(drvinfo->version, igbvf_driver_version, 198 sizeof(drvinfo->version)); 199 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 200 sizeof(drvinfo->bus_info)); 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 spin_lock_bh(&hw->mbx_lock); 301 302 hw->mac.ops.check_for_link(hw); 303 304 spin_unlock_bh(&hw->mbx_lock); 305 306 if (!(er32(STATUS) & E1000_STATUS_LU)) 307 *data = 1; 308 309 return *data; 310 } 311 312 static void igbvf_diag_test(struct net_device *netdev, 313 struct ethtool_test *eth_test, u64 *data) 314 { 315 struct igbvf_adapter *adapter = netdev_priv(netdev); 316 317 set_bit(__IGBVF_TESTING, &adapter->state); 318 319 /* Link test performed before hardware reset so autoneg doesn't 320 * interfere with test result 321 */ 322 if (igbvf_link_test(adapter, &data[0])) 323 eth_test->flags |= ETH_TEST_FL_FAILED; 324 325 clear_bit(__IGBVF_TESTING, &adapter->state); 326 msleep_interruptible(4 * 1000); 327 } 328 329 static void igbvf_get_wol(struct net_device *netdev, 330 struct ethtool_wolinfo *wol) 331 { 332 wol->supported = 0; 333 wol->wolopts = 0; 334 } 335 336 static int igbvf_set_wol(struct net_device *netdev, 337 struct ethtool_wolinfo *wol) 338 { 339 return -EOPNOTSUPP; 340 } 341 342 static int igbvf_get_coalesce(struct net_device *netdev, 343 struct ethtool_coalesce *ec) 344 { 345 struct igbvf_adapter *adapter = netdev_priv(netdev); 346 347 if (adapter->requested_itr <= 3) 348 ec->rx_coalesce_usecs = adapter->requested_itr; 349 else 350 ec->rx_coalesce_usecs = adapter->current_itr >> 2; 351 352 return 0; 353 } 354 355 static int igbvf_set_coalesce(struct net_device *netdev, 356 struct ethtool_coalesce *ec) 357 { 358 struct igbvf_adapter *adapter = netdev_priv(netdev); 359 struct e1000_hw *hw = &adapter->hw; 360 361 if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) && 362 (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) { 363 adapter->current_itr = ec->rx_coalesce_usecs << 2; 364 adapter->requested_itr = 1000000000 / 365 (adapter->current_itr * 256); 366 } else if ((ec->rx_coalesce_usecs == 3) || 367 (ec->rx_coalesce_usecs == 2)) { 368 adapter->current_itr = IGBVF_START_ITR; 369 adapter->requested_itr = ec->rx_coalesce_usecs; 370 } else if (ec->rx_coalesce_usecs == 0) { 371 /* The user's desire is to turn off interrupt throttling 372 * altogether, but due to HW limitations, we can't do that. 373 * Instead we set a very small value in EITR, which would 374 * allow ~967k interrupts per second, but allow the adapter's 375 * internal clocking to still function properly. 376 */ 377 adapter->current_itr = 4; 378 adapter->requested_itr = 1000000000 / 379 (adapter->current_itr * 256); 380 } else { 381 return -EINVAL; 382 } 383 384 writel(adapter->current_itr, 385 hw->hw_addr + adapter->rx_ring->itr_register); 386 387 return 0; 388 } 389 390 static int igbvf_nway_reset(struct net_device *netdev) 391 { 392 struct igbvf_adapter *adapter = netdev_priv(netdev); 393 394 if (netif_running(netdev)) 395 igbvf_reinit_locked(adapter); 396 return 0; 397 } 398 399 static void igbvf_get_ethtool_stats(struct net_device *netdev, 400 struct ethtool_stats *stats, 401 u64 *data) 402 { 403 struct igbvf_adapter *adapter = netdev_priv(netdev); 404 int i; 405 406 igbvf_update_stats(adapter); 407 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 408 char *p = (char *)adapter + 409 igbvf_gstrings_stats[i].stat_offset; 410 char *b = (char *)adapter + 411 igbvf_gstrings_stats[i].base_stat_offset; 412 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat == 413 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) : 414 (*(u32 *)p - *(u32 *)b)); 415 } 416 } 417 418 static int igbvf_get_sset_count(struct net_device *dev, int stringset) 419 { 420 switch (stringset) { 421 case ETH_SS_TEST: 422 return IGBVF_TEST_LEN; 423 case ETH_SS_STATS: 424 return IGBVF_GLOBAL_STATS_LEN; 425 default: 426 return -EINVAL; 427 } 428 } 429 430 static void igbvf_get_strings(struct net_device *netdev, u32 stringset, 431 u8 *data) 432 { 433 u8 *p = data; 434 int i; 435 436 switch (stringset) { 437 case ETH_SS_TEST: 438 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test)); 439 break; 440 case ETH_SS_STATS: 441 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 442 memcpy(p, igbvf_gstrings_stats[i].stat_string, 443 ETH_GSTRING_LEN); 444 p += ETH_GSTRING_LEN; 445 } 446 break; 447 } 448 } 449 450 static const struct ethtool_ops igbvf_ethtool_ops = { 451 .get_drvinfo = igbvf_get_drvinfo, 452 .get_regs_len = igbvf_get_regs_len, 453 .get_regs = igbvf_get_regs, 454 .get_wol = igbvf_get_wol, 455 .set_wol = igbvf_set_wol, 456 .get_msglevel = igbvf_get_msglevel, 457 .set_msglevel = igbvf_set_msglevel, 458 .nway_reset = igbvf_nway_reset, 459 .get_link = ethtool_op_get_link, 460 .get_eeprom_len = igbvf_get_eeprom_len, 461 .get_eeprom = igbvf_get_eeprom, 462 .set_eeprom = igbvf_set_eeprom, 463 .get_ringparam = igbvf_get_ringparam, 464 .set_ringparam = igbvf_set_ringparam, 465 .get_pauseparam = igbvf_get_pauseparam, 466 .set_pauseparam = igbvf_set_pauseparam, 467 .self_test = igbvf_diag_test, 468 .get_sset_count = igbvf_get_sset_count, 469 .get_strings = igbvf_get_strings, 470 .get_ethtool_stats = igbvf_get_ethtool_stats, 471 .get_coalesce = igbvf_get_coalesce, 472 .set_coalesce = igbvf_set_coalesce, 473 .get_link_ksettings = igbvf_get_link_ksettings, 474 .set_link_ksettings = igbvf_set_link_ksettings, 475 }; 476 477 void igbvf_set_ethtool_ops(struct net_device *netdev) 478 { 479 netdev->ethtool_ops = &igbvf_ethtool_ops; 480 } 481