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->bus_info, pci_name(adapter->pdev), 174 sizeof(drvinfo->bus_info)); 175 } 176 177 static void igbvf_get_ringparam(struct net_device *netdev, 178 struct ethtool_ringparam *ring, 179 struct kernel_ethtool_ringparam *kernel_ring, 180 struct netlink_ext_ack *extack) 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 struct kernel_ethtool_ringparam *kernel_ring, 195 struct netlink_ext_ack *extack) 196 { 197 struct igbvf_adapter *adapter = netdev_priv(netdev); 198 struct igbvf_ring *temp_ring; 199 int err = 0; 200 u32 new_rx_count, new_tx_count; 201 202 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 203 return -EINVAL; 204 205 new_rx_count = max_t(u32, ring->rx_pending, IGBVF_MIN_RXD); 206 new_rx_count = min_t(u32, new_rx_count, IGBVF_MAX_RXD); 207 new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE); 208 209 new_tx_count = max_t(u32, ring->tx_pending, IGBVF_MIN_TXD); 210 new_tx_count = min_t(u32, new_tx_count, IGBVF_MAX_TXD); 211 new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE); 212 213 if ((new_tx_count == adapter->tx_ring->count) && 214 (new_rx_count == adapter->rx_ring->count)) { 215 /* nothing to do */ 216 return 0; 217 } 218 219 while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) 220 usleep_range(1000, 2000); 221 222 if (!netif_running(adapter->netdev)) { 223 adapter->tx_ring->count = new_tx_count; 224 adapter->rx_ring->count = new_rx_count; 225 goto clear_reset; 226 } 227 228 temp_ring = vmalloc(sizeof(struct igbvf_ring)); 229 if (!temp_ring) { 230 err = -ENOMEM; 231 goto clear_reset; 232 } 233 234 igbvf_down(adapter); 235 236 /* We can't just free everything and then setup again, 237 * because the ISRs in MSI-X mode get passed pointers 238 * to the Tx and Rx ring structs. 239 */ 240 if (new_tx_count != adapter->tx_ring->count) { 241 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring)); 242 243 temp_ring->count = new_tx_count; 244 err = igbvf_setup_tx_resources(adapter, temp_ring); 245 if (err) 246 goto err_setup; 247 248 igbvf_free_tx_resources(adapter->tx_ring); 249 250 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring)); 251 } 252 253 if (new_rx_count != adapter->rx_ring->count) { 254 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring)); 255 256 temp_ring->count = new_rx_count; 257 err = igbvf_setup_rx_resources(adapter, temp_ring); 258 if (err) 259 goto err_setup; 260 261 igbvf_free_rx_resources(adapter->rx_ring); 262 263 memcpy(adapter->rx_ring, temp_ring, sizeof(struct igbvf_ring)); 264 } 265 err_setup: 266 igbvf_up(adapter); 267 vfree(temp_ring); 268 clear_reset: 269 clear_bit(__IGBVF_RESETTING, &adapter->state); 270 return err; 271 } 272 273 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data) 274 { 275 struct e1000_hw *hw = &adapter->hw; 276 *data = 0; 277 278 spin_lock_bh(&hw->mbx_lock); 279 280 hw->mac.ops.check_for_link(hw); 281 282 spin_unlock_bh(&hw->mbx_lock); 283 284 if (!(er32(STATUS) & E1000_STATUS_LU)) 285 *data = 1; 286 287 return *data; 288 } 289 290 static void igbvf_diag_test(struct net_device *netdev, 291 struct ethtool_test *eth_test, u64 *data) 292 { 293 struct igbvf_adapter *adapter = netdev_priv(netdev); 294 295 set_bit(__IGBVF_TESTING, &adapter->state); 296 297 /* Link test performed before hardware reset so autoneg doesn't 298 * interfere with test result 299 */ 300 if (igbvf_link_test(adapter, &data[0])) 301 eth_test->flags |= ETH_TEST_FL_FAILED; 302 303 clear_bit(__IGBVF_TESTING, &adapter->state); 304 msleep_interruptible(4 * 1000); 305 } 306 307 static void igbvf_get_wol(struct net_device *netdev, 308 struct ethtool_wolinfo *wol) 309 { 310 wol->supported = 0; 311 wol->wolopts = 0; 312 } 313 314 static int igbvf_set_wol(struct net_device *netdev, 315 struct ethtool_wolinfo *wol) 316 { 317 return -EOPNOTSUPP; 318 } 319 320 static int igbvf_get_coalesce(struct net_device *netdev, 321 struct ethtool_coalesce *ec, 322 struct kernel_ethtool_coalesce *kernel_coal, 323 struct netlink_ext_ack *extack) 324 { 325 struct igbvf_adapter *adapter = netdev_priv(netdev); 326 327 if (adapter->requested_itr <= 3) 328 ec->rx_coalesce_usecs = adapter->requested_itr; 329 else 330 ec->rx_coalesce_usecs = adapter->current_itr >> 2; 331 332 return 0; 333 } 334 335 static int igbvf_set_coalesce(struct net_device *netdev, 336 struct ethtool_coalesce *ec, 337 struct kernel_ethtool_coalesce *kernel_coal, 338 struct netlink_ext_ack *extack) 339 { 340 struct igbvf_adapter *adapter = netdev_priv(netdev); 341 struct e1000_hw *hw = &adapter->hw; 342 343 if ((ec->rx_coalesce_usecs >= IGBVF_MIN_ITR_USECS) && 344 (ec->rx_coalesce_usecs <= IGBVF_MAX_ITR_USECS)) { 345 adapter->current_itr = ec->rx_coalesce_usecs << 2; 346 adapter->requested_itr = 1000000000 / 347 (adapter->current_itr * 256); 348 } else if ((ec->rx_coalesce_usecs == 3) || 349 (ec->rx_coalesce_usecs == 2)) { 350 adapter->current_itr = IGBVF_START_ITR; 351 adapter->requested_itr = ec->rx_coalesce_usecs; 352 } else if (ec->rx_coalesce_usecs == 0) { 353 /* The user's desire is to turn off interrupt throttling 354 * altogether, but due to HW limitations, we can't do that. 355 * Instead we set a very small value in EITR, which would 356 * allow ~967k interrupts per second, but allow the adapter's 357 * internal clocking to still function properly. 358 */ 359 adapter->current_itr = 4; 360 adapter->requested_itr = 1000000000 / 361 (adapter->current_itr * 256); 362 } else { 363 return -EINVAL; 364 } 365 366 writel(adapter->current_itr, 367 hw->hw_addr + adapter->rx_ring->itr_register); 368 369 return 0; 370 } 371 372 static int igbvf_nway_reset(struct net_device *netdev) 373 { 374 struct igbvf_adapter *adapter = netdev_priv(netdev); 375 376 if (netif_running(netdev)) 377 igbvf_reinit_locked(adapter); 378 return 0; 379 } 380 381 static void igbvf_get_ethtool_stats(struct net_device *netdev, 382 struct ethtool_stats *stats, 383 u64 *data) 384 { 385 struct igbvf_adapter *adapter = netdev_priv(netdev); 386 int i; 387 388 igbvf_update_stats(adapter); 389 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 390 char *p = (char *)adapter + 391 igbvf_gstrings_stats[i].stat_offset; 392 char *b = (char *)adapter + 393 igbvf_gstrings_stats[i].base_stat_offset; 394 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat == 395 sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) : 396 (*(u32 *)p - *(u32 *)b)); 397 } 398 } 399 400 static int igbvf_get_sset_count(struct net_device *dev, int stringset) 401 { 402 switch (stringset) { 403 case ETH_SS_TEST: 404 return IGBVF_TEST_LEN; 405 case ETH_SS_STATS: 406 return IGBVF_GLOBAL_STATS_LEN; 407 default: 408 return -EINVAL; 409 } 410 } 411 412 static void igbvf_get_strings(struct net_device *netdev, u32 stringset, 413 u8 *data) 414 { 415 u8 *p = data; 416 int i; 417 418 switch (stringset) { 419 case ETH_SS_TEST: 420 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test)); 421 break; 422 case ETH_SS_STATS: 423 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) { 424 memcpy(p, igbvf_gstrings_stats[i].stat_string, 425 ETH_GSTRING_LEN); 426 p += ETH_GSTRING_LEN; 427 } 428 break; 429 } 430 } 431 432 static const struct ethtool_ops igbvf_ethtool_ops = { 433 .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS, 434 .get_drvinfo = igbvf_get_drvinfo, 435 .get_regs_len = igbvf_get_regs_len, 436 .get_regs = igbvf_get_regs, 437 .get_wol = igbvf_get_wol, 438 .set_wol = igbvf_set_wol, 439 .get_msglevel = igbvf_get_msglevel, 440 .set_msglevel = igbvf_set_msglevel, 441 .nway_reset = igbvf_nway_reset, 442 .get_link = ethtool_op_get_link, 443 .get_eeprom_len = igbvf_get_eeprom_len, 444 .get_eeprom = igbvf_get_eeprom, 445 .set_eeprom = igbvf_set_eeprom, 446 .get_ringparam = igbvf_get_ringparam, 447 .set_ringparam = igbvf_set_ringparam, 448 .get_pauseparam = igbvf_get_pauseparam, 449 .set_pauseparam = igbvf_set_pauseparam, 450 .self_test = igbvf_diag_test, 451 .get_sset_count = igbvf_get_sset_count, 452 .get_strings = igbvf_get_strings, 453 .get_ethtool_stats = igbvf_get_ethtool_stats, 454 .get_coalesce = igbvf_get_coalesce, 455 .set_coalesce = igbvf_set_coalesce, 456 .get_link_ksettings = igbvf_get_link_ksettings, 457 .set_link_ksettings = igbvf_set_link_ksettings, 458 }; 459 460 void igbvf_set_ethtool_ops(struct net_device *netdev) 461 { 462 netdev->ethtool_ops = &igbvf_ethtool_ops; 463 } 464