1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2009 - 2018 Intel Corporation. */ 3 4 /* ethtool support for igbvf */ 5 6 #include <linux/netdevice.h> 7 #include <linux/ethtool.h> 8 #include <linux/pci.h> 9 #include <linux/vmalloc.h> 10 #include <linux/delay.h> 11 12 #include "igbvf.h" 13 #include <linux/if_vlan.h> 14 15 struct igbvf_stats { 16 char stat_string[ETH_GSTRING_LEN]; 17 int sizeof_stat; 18 int stat_offset; 19 int base_stat_offset; 20 }; 21 22 #define IGBVF_STAT(current, base) \ 23 sizeof(((struct igbvf_adapter *)0)->current), \ 24 offsetof(struct igbvf_adapter, current), \ 25 offsetof(struct igbvf_adapter, base) 26 27 static const struct igbvf_stats igbvf_gstrings_stats[] = { 28 { "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) }, 29 { "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) }, 30 { "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) }, 31 { "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) }, 32 { "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) }, 33 { "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) }, 34 { "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) }, 35 { "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) }, 36 { "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) }, 37 { "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) }, 38 { "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) }, 39 { "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) }, 40 { "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) }, 41 }; 42 43 #define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats) 44 45 static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = { 46 "Link test (on/offline)" 47 }; 48 49 #define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test) 50 51 static int igbvf_get_link_ksettings(struct net_device *netdev, 52 struct ethtool_link_ksettings *cmd) 53 { 54 struct igbvf_adapter *adapter = netdev_priv(netdev); 55 struct e1000_hw *hw = &adapter->hw; 56 u32 status; 57 58 ethtool_link_ksettings_zero_link_mode(cmd, supported); 59 ethtool_link_ksettings_add_link_mode(cmd, supported, 1000baseT_Full); 60 ethtool_link_ksettings_zero_link_mode(cmd, advertising); 61 ethtool_link_ksettings_add_link_mode(cmd, advertising, 1000baseT_Full); 62 63 cmd->base.port = -1; 64 65 status = er32(STATUS); 66 if (status & E1000_STATUS_LU) { 67 if (status & E1000_STATUS_SPEED_1000) 68 cmd->base.speed = SPEED_1000; 69 else if (status & E1000_STATUS_SPEED_100) 70 cmd->base.speed = SPEED_100; 71 else 72 cmd->base.speed = SPEED_10; 73 74 if (status & E1000_STATUS_FD) 75 cmd->base.duplex = DUPLEX_FULL; 76 else 77 cmd->base.duplex = DUPLEX_HALF; 78 } else { 79 cmd->base.speed = SPEED_UNKNOWN; 80 cmd->base.duplex = DUPLEX_UNKNOWN; 81 } 82 83 cmd->base.autoneg = AUTONEG_DISABLE; 84 85 return 0; 86 } 87 88 static int igbvf_set_link_ksettings(struct net_device *netdev, 89 const struct ethtool_link_ksettings *cmd) 90 { 91 return -EOPNOTSUPP; 92 } 93 94 static void igbvf_get_pauseparam(struct net_device *netdev, 95 struct ethtool_pauseparam *pause) 96 { 97 } 98 99 static int igbvf_set_pauseparam(struct net_device *netdev, 100 struct ethtool_pauseparam *pause) 101 { 102 return -EOPNOTSUPP; 103 } 104 105 static u32 igbvf_get_msglevel(struct net_device *netdev) 106 { 107 struct igbvf_adapter *adapter = netdev_priv(netdev); 108 109 return adapter->msg_enable; 110 } 111 112 static void igbvf_set_msglevel(struct net_device *netdev, u32 data) 113 { 114 struct igbvf_adapter *adapter = netdev_priv(netdev); 115 116 adapter->msg_enable = data; 117 } 118 119 static int igbvf_get_regs_len(struct net_device *netdev) 120 { 121 #define IGBVF_REGS_LEN 8 122 return IGBVF_REGS_LEN * sizeof(u32); 123 } 124 125 static void igbvf_get_regs(struct net_device *netdev, 126 struct ethtool_regs *regs, void *p) 127 { 128 struct igbvf_adapter *adapter = netdev_priv(netdev); 129 struct e1000_hw *hw = &adapter->hw; 130 u32 *regs_buff = p; 131 132 memset(p, 0, IGBVF_REGS_LEN * sizeof(u32)); 133 134 regs->version = (1u << 24) | 135 (adapter->pdev->revision << 16) | 136 adapter->pdev->device; 137 138 regs_buff[0] = er32(CTRL); 139 regs_buff[1] = er32(STATUS); 140 141 regs_buff[2] = er32(RDLEN(0)); 142 regs_buff[3] = er32(RDH(0)); 143 regs_buff[4] = er32(RDT(0)); 144 145 regs_buff[5] = er32(TDLEN(0)); 146 regs_buff[6] = er32(TDH(0)); 147 regs_buff[7] = er32(TDT(0)); 148 } 149 150 static int igbvf_get_eeprom_len(struct net_device *netdev) 151 { 152 return 0; 153 } 154 155 static int igbvf_get_eeprom(struct net_device *netdev, 156 struct ethtool_eeprom *eeprom, u8 *bytes) 157 { 158 return -EOPNOTSUPP; 159 } 160 161 static int igbvf_set_eeprom(struct net_device *netdev, 162 struct ethtool_eeprom *eeprom, u8 *bytes) 163 { 164 return -EOPNOTSUPP; 165 } 166 167 static void igbvf_get_drvinfo(struct net_device *netdev, 168 struct ethtool_drvinfo *drvinfo) 169 { 170 struct igbvf_adapter *adapter = netdev_priv(netdev); 171 172 strlcpy(drvinfo->driver, igbvf_driver_name, sizeof(drvinfo->driver)); 173 strlcpy(drvinfo->version, igbvf_driver_version, 174 sizeof(drvinfo->version)); 175 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 176 sizeof(drvinfo->bus_info)); 177 } 178 179 static void igbvf_get_ringparam(struct net_device *netdev, 180 struct ethtool_ringparam *ring) 181 { 182 struct igbvf_adapter *adapter = netdev_priv(netdev); 183 struct igbvf_ring *tx_ring = adapter->tx_ring; 184 struct igbvf_ring *rx_ring = adapter->rx_ring; 185 186 ring->rx_max_pending = IGBVF_MAX_RXD; 187 ring->tx_max_pending = IGBVF_MAX_TXD; 188 ring->rx_pending = rx_ring->count; 189 ring->tx_pending = tx_ring->count; 190 } 191 192 static int igbvf_set_ringparam(struct net_device *netdev, 193 struct ethtool_ringparam *ring) 194 { 195 struct igbvf_adapter *adapter = netdev_priv(netdev); 196 struct igbvf_ring *temp_ring; 197 int err = 0; 198 u32 new_rx_count, new_tx_count; 199 200 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 201 return -EINVAL; 202 203 new_rx_count = max_t(u32, ring->rx_pending, IGBVF_MIN_RXD); 204 new_rx_count = min_t(u32, new_rx_count, IGBVF_MAX_RXD); 205 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE); 206 207 new_tx_count = max_t(u32, ring->tx_pending, IGBVF_MIN_TXD); 208 new_tx_count = min_t(u32, new_tx_count, IGBVF_MAX_TXD); 209 new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE); 210 211 if ((new_tx_count == adapter->tx_ring->count) && 212 (new_rx_count == adapter->rx_ring->count)) { 213 /* nothing to do */ 214 return 0; 215 } 216 217 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) 218 usleep_range(1000, 2000); 219 220 if (!netif_running(adapter->netdev)) { 221 adapter->tx_ring->count = new_tx_count; 222 adapter->rx_ring->count = new_rx_count; 223 goto clear_reset; 224 } 225 226 temp_ring = vmalloc(sizeof(struct igbvf_ring)); 227 if (!temp_ring) { 228 err = -ENOMEM; 229 goto clear_reset; 230 } 231 232 igbvf_down(adapter); 233 234 /* We can't just free everything and then setup again, 235 * because the ISRs in MSI-X mode get passed pointers 236 * to the Tx and Rx ring structs. 237 */ 238 if (new_tx_count != adapter->tx_ring->count) { 239 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring)); 240 241 temp_ring->count = new_tx_count; 242 err = igbvf_setup_tx_resources(adapter, temp_ring); 243 if (err) 244 goto err_setup; 245 246 igbvf_free_tx_resources(adapter->tx_ring); 247 248 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring)); 249 } 250 251 if (new_rx_count != adapter->rx_ring->count) { 252 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring)); 253 254 temp_ring->count = new_rx_count; 255 err = igbvf_setup_rx_resources(adapter, temp_ring); 256 if (err) 257 goto err_setup; 258 259 igbvf_free_rx_resources(adapter->rx_ring); 260 261 memcpy(adapter->rx_ring, temp_ring, sizeof(struct igbvf_ring)); 262 } 263 err_setup: 264 igbvf_up(adapter); 265 vfree(temp_ring); 266 clear_reset: 267 clear_bit(__IGBVF_RESETTING, &adapter->state); 268 return err; 269 } 270 271 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data) 272 { 273 struct e1000_hw *hw = &adapter->hw; 274 *data = 0; 275 276 spin_lock_bh(&hw->mbx_lock); 277 278 hw->mac.ops.check_for_link(hw); 279 280 spin_unlock_bh(&hw->mbx_lock); 281 282 if (!(er32(STATUS) & E1000_STATUS_LU)) 283 *data = 1; 284 285 return *data; 286 } 287 288 static void igbvf_diag_test(struct net_device *netdev, 289 struct ethtool_test *eth_test, u64 *data) 290 { 291 struct igbvf_adapter *adapter = netdev_priv(netdev); 292 293 set_bit(__IGBVF_TESTING, &adapter->state); 294 295 /* Link test performed before hardware reset so autoneg doesn't 296 * interfere with test result 297 */ 298 if (igbvf_link_test(adapter, &data[0])) 299 eth_test->flags |= ETH_TEST_FL_FAILED; 300 301 clear_bit(__IGBVF_TESTING, &adapter->state); 302 msleep_interruptible(4 * 1000); 303 } 304 305 static void igbvf_get_wol(struct net_device *netdev, 306 struct ethtool_wolinfo *wol) 307 { 308 wol->supported = 0; 309 wol->wolopts = 0; 310 } 311 312 static int igbvf_set_wol(struct net_device *netdev, 313 struct ethtool_wolinfo *wol) 314 { 315 return -EOPNOTSUPP; 316 } 317 318 static int igbvf_get_coalesce(struct net_device *netdev, 319 struct ethtool_coalesce *ec) 320 { 321 struct igbvf_adapter *adapter = netdev_priv(netdev); 322 323 if (adapter->requested_itr <= 3) 324 ec->rx_coalesce_usecs = adapter->requested_itr; 325 else 326 ec->rx_coalesce_usecs = adapter->current_itr >> 2; 327 328 return 0; 329 } 330 331 static int igbvf_set_coalesce(struct net_device *netdev, 332 struct ethtool_coalesce *ec) 333 { 334 struct igbvf_adapter *adapter = netdev_priv(netdev); 335 struct e1000_hw *hw = &adapter->hw; 336 337 if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) && 338 (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) { 339 adapter->current_itr = ec->rx_coalesce_usecs << 2; 340 adapter->requested_itr = 1000000000 / 341 (adapter->current_itr * 256); 342 } else if ((ec->rx_coalesce_usecs == 3) || 343 (ec->rx_coalesce_usecs == 2)) { 344 adapter->current_itr = IGBVF_START_ITR; 345 adapter->requested_itr = ec->rx_coalesce_usecs; 346 } else if (ec->rx_coalesce_usecs == 0) { 347 /* The user's desire is to turn off interrupt throttling 348 * altogether, but due to HW limitations, we can't do that. 349 * Instead we set a very small value in EITR, which would 350 * allow ~967k interrupts per second, but allow the adapter's 351 * internal clocking to still function properly. 352 */ 353 adapter->current_itr = 4; 354 adapter->requested_itr = 1000000000 / 355 (adapter->current_itr * 256); 356 } else { 357 return -EINVAL; 358 } 359 360 writel(adapter->current_itr, 361 hw->hw_addr + adapter->rx_ring->itr_register); 362 363 return 0; 364 } 365 366 static int igbvf_nway_reset(struct net_device *netdev) 367 { 368 struct igbvf_adapter *adapter = netdev_priv(netdev); 369 370 if (netif_running(netdev)) 371 igbvf_reinit_locked(adapter); 372 return 0; 373 } 374 375 static void igbvf_get_ethtool_stats(struct net_device *netdev, 376 struct ethtool_stats *stats, 377 u64 *data) 378 { 379 struct igbvf_adapter *adapter = netdev_priv(netdev); 380 int i; 381 382 igbvf_update_stats(adapter); 383 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 384 char *p = (char *)adapter + 385 igbvf_gstrings_stats[i].stat_offset; 386 char *b = (char *)adapter + 387 igbvf_gstrings_stats[i].base_stat_offset; 388 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat == 389 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) : 390 (*(u32 *)p - *(u32 *)b)); 391 } 392 } 393 394 static int igbvf_get_sset_count(struct net_device *dev, int stringset) 395 { 396 switch (stringset) { 397 case ETH_SS_TEST: 398 return IGBVF_TEST_LEN; 399 case ETH_SS_STATS: 400 return IGBVF_GLOBAL_STATS_LEN; 401 default: 402 return -EINVAL; 403 } 404 } 405 406 static void igbvf_get_strings(struct net_device *netdev, u32 stringset, 407 u8 *data) 408 { 409 u8 *p = data; 410 int i; 411 412 switch (stringset) { 413 case ETH_SS_TEST: 414 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test)); 415 break; 416 case ETH_SS_STATS: 417 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 418 memcpy(p, igbvf_gstrings_stats[i].stat_string, 419 ETH_GSTRING_LEN); 420 p += ETH_GSTRING_LEN; 421 } 422 break; 423 } 424 } 425 426 static const struct ethtool_ops igbvf_ethtool_ops = { 427 .get_drvinfo = igbvf_get_drvinfo, 428 .get_regs_len = igbvf_get_regs_len, 429 .get_regs = igbvf_get_regs, 430 .get_wol = igbvf_get_wol, 431 .set_wol = igbvf_set_wol, 432 .get_msglevel = igbvf_get_msglevel, 433 .set_msglevel = igbvf_set_msglevel, 434 .nway_reset = igbvf_nway_reset, 435 .get_link = ethtool_op_get_link, 436 .get_eeprom_len = igbvf_get_eeprom_len, 437 .get_eeprom = igbvf_get_eeprom, 438 .set_eeprom = igbvf_set_eeprom, 439 .get_ringparam = igbvf_get_ringparam, 440 .set_ringparam = igbvf_set_ringparam, 441 .get_pauseparam = igbvf_get_pauseparam, 442 .set_pauseparam = igbvf_set_pauseparam, 443 .self_test = igbvf_diag_test, 444 .get_sset_count = igbvf_get_sset_count, 445 .get_strings = igbvf_get_strings, 446 .get_ethtool_stats = igbvf_get_ethtool_stats, 447 .get_coalesce = igbvf_get_coalesce, 448 .set_coalesce = igbvf_set_coalesce, 449 .get_link_ksettings = igbvf_get_link_ksettings, 450 .set_link_ksettings = igbvf_set_link_ksettings, 451 }; 452 453 void igbvf_set_ethtool_ops(struct net_device *netdev) 454 { 455 netdev->ethtool_ops = &igbvf_ethtool_ops; 456 } 457