1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) 1999 - 2010 Intel Corporation. 4 * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD. 5 * 6 * This code was derived from the Intel e1000e Linux driver. 7 */ 8 #include "pch_gbe.h" 9 #include "pch_gbe_phy.h" 10 11 static const char pch_driver_version[] = "1.01"; 12 13 /* 14 * pch_gbe_stats - Stats item information 15 */ 16 struct pch_gbe_stats { 17 char string[ETH_GSTRING_LEN]; 18 size_t size; 19 size_t offset; 20 }; 21 22 #define PCH_GBE_STAT(m) \ 23 { \ 24 .string = #m, \ 25 .size = sizeof_field(struct pch_gbe_hw_stats, m), \ 26 .offset = offsetof(struct pch_gbe_hw_stats, m), \ 27 } 28 29 /* 30 * pch_gbe_gstrings_stats - ethtool information status name list 31 */ 32 static const struct pch_gbe_stats pch_gbe_gstrings_stats[] = { 33 PCH_GBE_STAT(rx_packets), 34 PCH_GBE_STAT(tx_packets), 35 PCH_GBE_STAT(rx_bytes), 36 PCH_GBE_STAT(tx_bytes), 37 PCH_GBE_STAT(rx_errors), 38 PCH_GBE_STAT(tx_errors), 39 PCH_GBE_STAT(rx_dropped), 40 PCH_GBE_STAT(tx_dropped), 41 PCH_GBE_STAT(multicast), 42 PCH_GBE_STAT(collisions), 43 PCH_GBE_STAT(rx_crc_errors), 44 PCH_GBE_STAT(rx_frame_errors), 45 PCH_GBE_STAT(rx_alloc_buff_failed), 46 PCH_GBE_STAT(tx_length_errors), 47 PCH_GBE_STAT(tx_aborted_errors), 48 PCH_GBE_STAT(tx_carrier_errors), 49 PCH_GBE_STAT(tx_timeout_count), 50 PCH_GBE_STAT(tx_restart_count), 51 PCH_GBE_STAT(intr_rx_dsc_empty_count), 52 PCH_GBE_STAT(intr_rx_frame_err_count), 53 PCH_GBE_STAT(intr_rx_fifo_err_count), 54 PCH_GBE_STAT(intr_rx_dma_err_count), 55 PCH_GBE_STAT(intr_tx_fifo_err_count), 56 PCH_GBE_STAT(intr_tx_dma_err_count), 57 PCH_GBE_STAT(intr_tcpip_err_count) 58 }; 59 60 #define PCH_GBE_QUEUE_STATS_LEN 0 61 #define PCH_GBE_GLOBAL_STATS_LEN ARRAY_SIZE(pch_gbe_gstrings_stats) 62 #define PCH_GBE_STATS_LEN (PCH_GBE_GLOBAL_STATS_LEN + PCH_GBE_QUEUE_STATS_LEN) 63 64 #define PCH_GBE_MAC_REGS_LEN (sizeof(struct pch_gbe_regs) / 4) 65 #define PCH_GBE_REGS_LEN (PCH_GBE_MAC_REGS_LEN + PCH_GBE_PHY_REGS_LEN) 66 /** 67 * pch_gbe_get_link_ksettings - Get device-specific settings 68 * @netdev: Network interface device structure 69 * @ecmd: Ethtool command 70 * Returns: 71 * 0: Successful. 72 * Negative value: Failed. 73 */ 74 static int pch_gbe_get_link_ksettings(struct net_device *netdev, 75 struct ethtool_link_ksettings *ecmd) 76 { 77 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 78 u32 supported, advertising; 79 80 mii_ethtool_get_link_ksettings(&adapter->mii, ecmd); 81 82 ethtool_convert_link_mode_to_legacy_u32(&supported, 83 ecmd->link_modes.supported); 84 ethtool_convert_link_mode_to_legacy_u32(&advertising, 85 ecmd->link_modes.advertising); 86 87 supported &= ~(SUPPORTED_TP | SUPPORTED_1000baseT_Half); 88 advertising &= ~(ADVERTISED_TP | ADVERTISED_1000baseT_Half); 89 90 ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.supported, 91 supported); 92 ethtool_convert_legacy_u32_to_link_mode(ecmd->link_modes.advertising, 93 advertising); 94 95 if (!netif_carrier_ok(adapter->netdev)) 96 ecmd->base.speed = SPEED_UNKNOWN; 97 98 return 0; 99 } 100 101 /** 102 * pch_gbe_set_link_ksettings - Set device-specific settings 103 * @netdev: Network interface device structure 104 * @ecmd: Ethtool command 105 * Returns: 106 * 0: Successful. 107 * Negative value: Failed. 108 */ 109 static int pch_gbe_set_link_ksettings(struct net_device *netdev, 110 const struct ethtool_link_ksettings *ecmd) 111 { 112 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 113 struct pch_gbe_hw *hw = &adapter->hw; 114 struct ethtool_link_ksettings copy_ecmd; 115 u32 speed = ecmd->base.speed; 116 u32 advertising; 117 int ret; 118 119 pch_gbe_phy_write_reg_miic(hw, MII_BMCR, BMCR_RESET); 120 121 memcpy(©_ecmd, ecmd, sizeof(*ecmd)); 122 123 /* when set_settings() is called with a ethtool_cmd previously 124 * filled by get_settings() on a down link, speed is -1: */ 125 if (speed == UINT_MAX) { 126 speed = SPEED_1000; 127 copy_ecmd.base.speed = speed; 128 copy_ecmd.base.duplex = DUPLEX_FULL; 129 } 130 ret = mii_ethtool_set_link_ksettings(&adapter->mii, ©_ecmd); 131 if (ret) { 132 netdev_err(netdev, "Error: mii_ethtool_set_link_ksettings\n"); 133 return ret; 134 } 135 hw->mac.link_speed = speed; 136 hw->mac.link_duplex = copy_ecmd.base.duplex; 137 ethtool_convert_link_mode_to_legacy_u32( 138 &advertising, copy_ecmd.link_modes.advertising); 139 hw->phy.autoneg_advertised = advertising; 140 hw->mac.autoneg = copy_ecmd.base.autoneg; 141 142 /* reset the link */ 143 if (netif_running(adapter->netdev)) { 144 pch_gbe_down(adapter); 145 ret = pch_gbe_up(adapter); 146 } else { 147 pch_gbe_reset(adapter); 148 } 149 return ret; 150 } 151 152 /** 153 * pch_gbe_get_regs_len - Report the size of device registers 154 * @netdev: Network interface device structure 155 * Returns: the size of device registers. 156 */ 157 static int pch_gbe_get_regs_len(struct net_device *netdev) 158 { 159 return PCH_GBE_REGS_LEN * (int)sizeof(u32); 160 } 161 162 /** 163 * pch_gbe_get_drvinfo - Report driver information 164 * @netdev: Network interface device structure 165 * @drvinfo: Driver information structure 166 */ 167 static void pch_gbe_get_drvinfo(struct net_device *netdev, 168 struct ethtool_drvinfo *drvinfo) 169 { 170 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 171 172 strlcpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo->driver)); 173 strlcpy(drvinfo->version, pch_driver_version, sizeof(drvinfo->version)); 174 strlcpy(drvinfo->bus_info, pci_name(adapter->pdev), 175 sizeof(drvinfo->bus_info)); 176 } 177 178 /** 179 * pch_gbe_get_regs - Get device registers 180 * @netdev: Network interface device structure 181 * @regs: Ethtool register structure 182 * @p: Buffer pointer of read device register date 183 */ 184 static void pch_gbe_get_regs(struct net_device *netdev, 185 struct ethtool_regs *regs, void *p) 186 { 187 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 188 struct pch_gbe_hw *hw = &adapter->hw; 189 struct pci_dev *pdev = adapter->pdev; 190 u32 *regs_buff = p; 191 u16 i, tmp; 192 193 regs->version = 0x1000000 | (__u32)pdev->revision << 16 | pdev->device; 194 for (i = 0; i < PCH_GBE_MAC_REGS_LEN; i++) 195 *regs_buff++ = ioread32(&hw->reg->INT_ST + i); 196 /* PHY register */ 197 for (i = 0; i < PCH_GBE_PHY_REGS_LEN; i++) { 198 pch_gbe_phy_read_reg_miic(&adapter->hw, i, &tmp); 199 *regs_buff++ = tmp; 200 } 201 } 202 203 /** 204 * pch_gbe_get_wol - Report whether Wake-on-Lan is enabled 205 * @netdev: Network interface device structure 206 * @wol: Wake-on-Lan information 207 */ 208 static void pch_gbe_get_wol(struct net_device *netdev, 209 struct ethtool_wolinfo *wol) 210 { 211 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 212 213 wol->supported = WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | WAKE_MAGIC; 214 wol->wolopts = 0; 215 216 if ((adapter->wake_up_evt & PCH_GBE_WLC_IND)) 217 wol->wolopts |= WAKE_UCAST; 218 if ((adapter->wake_up_evt & PCH_GBE_WLC_MLT)) 219 wol->wolopts |= WAKE_MCAST; 220 if ((adapter->wake_up_evt & PCH_GBE_WLC_BR)) 221 wol->wolopts |= WAKE_BCAST; 222 if ((adapter->wake_up_evt & PCH_GBE_WLC_MP)) 223 wol->wolopts |= WAKE_MAGIC; 224 } 225 226 /** 227 * pch_gbe_set_wol - Turn Wake-on-Lan on or off 228 * @netdev: Network interface device structure 229 * @wol: Pointer of wake-on-Lan information straucture 230 * Returns: 231 * 0: Successful. 232 * Negative value: Failed. 233 */ 234 static int pch_gbe_set_wol(struct net_device *netdev, 235 struct ethtool_wolinfo *wol) 236 { 237 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 238 239 if ((wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE))) 240 return -EOPNOTSUPP; 241 /* these settings will always override what we currently have */ 242 adapter->wake_up_evt = 0; 243 244 if ((wol->wolopts & WAKE_UCAST)) 245 adapter->wake_up_evt |= PCH_GBE_WLC_IND; 246 if ((wol->wolopts & WAKE_MCAST)) 247 adapter->wake_up_evt |= PCH_GBE_WLC_MLT; 248 if ((wol->wolopts & WAKE_BCAST)) 249 adapter->wake_up_evt |= PCH_GBE_WLC_BR; 250 if ((wol->wolopts & WAKE_MAGIC)) 251 adapter->wake_up_evt |= PCH_GBE_WLC_MP; 252 return 0; 253 } 254 255 /** 256 * pch_gbe_nway_reset - Restart autonegotiation 257 * @netdev: Network interface device structure 258 * Returns: 259 * 0: Successful. 260 * Negative value: Failed. 261 */ 262 static int pch_gbe_nway_reset(struct net_device *netdev) 263 { 264 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 265 266 return mii_nway_restart(&adapter->mii); 267 } 268 269 /** 270 * pch_gbe_get_ringparam - Report ring sizes 271 * @netdev: Network interface device structure 272 * @ring: Ring param structure 273 */ 274 static void pch_gbe_get_ringparam(struct net_device *netdev, 275 struct ethtool_ringparam *ring) 276 { 277 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 278 struct pch_gbe_tx_ring *txdr = adapter->tx_ring; 279 struct pch_gbe_rx_ring *rxdr = adapter->rx_ring; 280 281 ring->rx_max_pending = PCH_GBE_MAX_RXD; 282 ring->tx_max_pending = PCH_GBE_MAX_TXD; 283 ring->rx_pending = rxdr->count; 284 ring->tx_pending = txdr->count; 285 } 286 287 /** 288 * pch_gbe_set_ringparam - Set ring sizes 289 * @netdev: Network interface device structure 290 * @ring: Ring param structure 291 * Returns 292 * 0: Successful. 293 * Negative value: Failed. 294 */ 295 static int pch_gbe_set_ringparam(struct net_device *netdev, 296 struct ethtool_ringparam *ring) 297 { 298 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 299 struct pch_gbe_tx_ring *txdr, *tx_old; 300 struct pch_gbe_rx_ring *rxdr, *rx_old; 301 int tx_ring_size, rx_ring_size; 302 int err = 0; 303 304 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) 305 return -EINVAL; 306 tx_ring_size = (int)sizeof(struct pch_gbe_tx_ring); 307 rx_ring_size = (int)sizeof(struct pch_gbe_rx_ring); 308 309 if ((netif_running(adapter->netdev))) 310 pch_gbe_down(adapter); 311 tx_old = adapter->tx_ring; 312 rx_old = adapter->rx_ring; 313 314 txdr = kzalloc(tx_ring_size, GFP_KERNEL); 315 if (!txdr) { 316 err = -ENOMEM; 317 goto err_alloc_tx; 318 } 319 rxdr = kzalloc(rx_ring_size, GFP_KERNEL); 320 if (!rxdr) { 321 err = -ENOMEM; 322 goto err_alloc_rx; 323 } 324 adapter->tx_ring = txdr; 325 adapter->rx_ring = rxdr; 326 327 rxdr->count = 328 clamp_val(ring->rx_pending, PCH_GBE_MIN_RXD, PCH_GBE_MAX_RXD); 329 rxdr->count = roundup(rxdr->count, PCH_GBE_RX_DESC_MULTIPLE); 330 331 txdr->count = 332 clamp_val(ring->tx_pending, PCH_GBE_MIN_RXD, PCH_GBE_MAX_RXD); 333 txdr->count = roundup(txdr->count, PCH_GBE_TX_DESC_MULTIPLE); 334 335 if ((netif_running(adapter->netdev))) { 336 /* Try to get new resources before deleting old */ 337 err = pch_gbe_setup_rx_resources(adapter, adapter->rx_ring); 338 if (err) 339 goto err_setup_rx; 340 err = pch_gbe_setup_tx_resources(adapter, adapter->tx_ring); 341 if (err) 342 goto err_setup_tx; 343 pch_gbe_free_rx_resources(adapter, rx_old); 344 pch_gbe_free_tx_resources(adapter, tx_old); 345 kfree(tx_old); 346 kfree(rx_old); 347 adapter->rx_ring = rxdr; 348 adapter->tx_ring = txdr; 349 err = pch_gbe_up(adapter); 350 } 351 return err; 352 353 err_setup_tx: 354 pch_gbe_free_rx_resources(adapter, adapter->rx_ring); 355 err_setup_rx: 356 adapter->rx_ring = rx_old; 357 adapter->tx_ring = tx_old; 358 kfree(rxdr); 359 err_alloc_rx: 360 kfree(txdr); 361 err_alloc_tx: 362 if (netif_running(adapter->netdev)) 363 pch_gbe_up(adapter); 364 return err; 365 } 366 367 /** 368 * pch_gbe_get_pauseparam - Report pause parameters 369 * @netdev: Network interface device structure 370 * @pause: Pause parameters structure 371 */ 372 static void pch_gbe_get_pauseparam(struct net_device *netdev, 373 struct ethtool_pauseparam *pause) 374 { 375 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 376 struct pch_gbe_hw *hw = &adapter->hw; 377 378 pause->autoneg = 379 ((hw->mac.fc_autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE); 380 381 if (hw->mac.fc == PCH_GBE_FC_RX_PAUSE) { 382 pause->rx_pause = 1; 383 } else if (hw->mac.fc == PCH_GBE_FC_TX_PAUSE) { 384 pause->tx_pause = 1; 385 } else if (hw->mac.fc == PCH_GBE_FC_FULL) { 386 pause->rx_pause = 1; 387 pause->tx_pause = 1; 388 } 389 } 390 391 /** 392 * pch_gbe_set_pauseparam - Set pause parameters 393 * @netdev: Network interface device structure 394 * @pause: Pause parameters structure 395 * Returns: 396 * 0: Successful. 397 * Negative value: Failed. 398 */ 399 static int pch_gbe_set_pauseparam(struct net_device *netdev, 400 struct ethtool_pauseparam *pause) 401 { 402 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 403 struct pch_gbe_hw *hw = &adapter->hw; 404 int ret = 0; 405 406 hw->mac.fc_autoneg = pause->autoneg; 407 if ((pause->rx_pause) && (pause->tx_pause)) 408 hw->mac.fc = PCH_GBE_FC_FULL; 409 else if ((pause->rx_pause) && (!pause->tx_pause)) 410 hw->mac.fc = PCH_GBE_FC_RX_PAUSE; 411 else if ((!pause->rx_pause) && (pause->tx_pause)) 412 hw->mac.fc = PCH_GBE_FC_TX_PAUSE; 413 else if ((!pause->rx_pause) && (!pause->tx_pause)) 414 hw->mac.fc = PCH_GBE_FC_NONE; 415 416 if (hw->mac.fc_autoneg == AUTONEG_ENABLE) { 417 if ((netif_running(adapter->netdev))) { 418 pch_gbe_down(adapter); 419 ret = pch_gbe_up(adapter); 420 } else { 421 pch_gbe_reset(adapter); 422 } 423 } else { 424 ret = pch_gbe_mac_force_mac_fc(hw); 425 } 426 return ret; 427 } 428 429 /** 430 * pch_gbe_get_strings - Return a set of strings that describe the requested 431 * objects 432 * @netdev: Network interface device structure 433 * @stringset: Select the stringset. [ETH_SS_TEST] [ETH_SS_STATS] 434 * @data: Pointer of read string data. 435 */ 436 static void pch_gbe_get_strings(struct net_device *netdev, u32 stringset, 437 u8 *data) 438 { 439 u8 *p = data; 440 int i; 441 442 switch (stringset) { 443 case (u32) ETH_SS_STATS: 444 for (i = 0; i < PCH_GBE_GLOBAL_STATS_LEN; i++) { 445 memcpy(p, pch_gbe_gstrings_stats[i].string, 446 ETH_GSTRING_LEN); 447 p += ETH_GSTRING_LEN; 448 } 449 break; 450 } 451 } 452 453 /** 454 * pch_gbe_get_ethtool_stats - Return statistics about the device 455 * @netdev: Network interface device structure 456 * @stats: Ethtool statue structure 457 * @data: Pointer of read status area 458 */ 459 static void pch_gbe_get_ethtool_stats(struct net_device *netdev, 460 struct ethtool_stats *stats, u64 *data) 461 { 462 struct pch_gbe_adapter *adapter = netdev_priv(netdev); 463 int i; 464 const struct pch_gbe_stats *gstats = pch_gbe_gstrings_stats; 465 char *hw_stats = (char *)&adapter->stats; 466 467 pch_gbe_update_stats(adapter); 468 for (i = 0; i < PCH_GBE_GLOBAL_STATS_LEN; i++) { 469 char *p = hw_stats + gstats->offset; 470 data[i] = gstats->size == sizeof(u64) ? *(u64 *)p:(*(u32 *)p); 471 gstats++; 472 } 473 } 474 475 static int pch_gbe_get_sset_count(struct net_device *netdev, int sset) 476 { 477 switch (sset) { 478 case ETH_SS_STATS: 479 return PCH_GBE_STATS_LEN; 480 default: 481 return -EOPNOTSUPP; 482 } 483 } 484 485 static const struct ethtool_ops pch_gbe_ethtool_ops = { 486 .get_drvinfo = pch_gbe_get_drvinfo, 487 .get_regs_len = pch_gbe_get_regs_len, 488 .get_regs = pch_gbe_get_regs, 489 .get_wol = pch_gbe_get_wol, 490 .set_wol = pch_gbe_set_wol, 491 .nway_reset = pch_gbe_nway_reset, 492 .get_link = ethtool_op_get_link, 493 .get_ringparam = pch_gbe_get_ringparam, 494 .set_ringparam = pch_gbe_set_ringparam, 495 .get_pauseparam = pch_gbe_get_pauseparam, 496 .set_pauseparam = pch_gbe_set_pauseparam, 497 .get_strings = pch_gbe_get_strings, 498 .get_ethtool_stats = pch_gbe_get_ethtool_stats, 499 .get_sset_count = pch_gbe_get_sset_count, 500 .get_link_ksettings = pch_gbe_get_link_ksettings, 501 .set_link_ksettings = pch_gbe_set_link_ksettings, 502 }; 503 504 void pch_gbe_set_ethtool_ops(struct net_device *netdev) 505 { 506 netdev->ethtool_ops = &pch_gbe_ethtool_ops; 507 } 508