1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * 4 * Copyright (C) 2009-2016 John Crispin <blogic@openwrt.org> 5 * Copyright (C) 2009-2016 Felix Fietkau <nbd@openwrt.org> 6 * Copyright (C) 2013-2016 Michael Lee <igvtee@gmail.com> 7 */ 8 9 #include <linux/of_device.h> 10 #include <linux/of_mdio.h> 11 #include <linux/of_net.h> 12 #include <linux/mfd/syscon.h> 13 #include <linux/regmap.h> 14 #include <linux/clk.h> 15 #include <linux/pm_runtime.h> 16 #include <linux/if_vlan.h> 17 #include <linux/reset.h> 18 #include <linux/tcp.h> 19 #include <linux/interrupt.h> 20 #include <linux/pinctrl/devinfo.h> 21 #include <linux/phylink.h> 22 23 #include "mtk_eth_soc.h" 24 25 static int mtk_msg_level = -1; 26 module_param_named(msg_level, mtk_msg_level, int, 0); 27 MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)"); 28 29 #define MTK_ETHTOOL_STAT(x) { #x, \ 30 offsetof(struct mtk_hw_stats, x) / sizeof(u64) } 31 32 /* strings used by ethtool */ 33 static const struct mtk_ethtool_stats { 34 char str[ETH_GSTRING_LEN]; 35 u32 offset; 36 } mtk_ethtool_stats[] = { 37 MTK_ETHTOOL_STAT(tx_bytes), 38 MTK_ETHTOOL_STAT(tx_packets), 39 MTK_ETHTOOL_STAT(tx_skip), 40 MTK_ETHTOOL_STAT(tx_collisions), 41 MTK_ETHTOOL_STAT(rx_bytes), 42 MTK_ETHTOOL_STAT(rx_packets), 43 MTK_ETHTOOL_STAT(rx_overflow), 44 MTK_ETHTOOL_STAT(rx_fcs_errors), 45 MTK_ETHTOOL_STAT(rx_short_errors), 46 MTK_ETHTOOL_STAT(rx_long_errors), 47 MTK_ETHTOOL_STAT(rx_checksum_errors), 48 MTK_ETHTOOL_STAT(rx_flow_control_packets), 49 }; 50 51 static const char * const mtk_clks_source_name[] = { 52 "ethif", "sgmiitop", "esw", "gp0", "gp1", "gp2", "fe", "trgpll", 53 "sgmii_tx250m", "sgmii_rx250m", "sgmii_cdr_ref", "sgmii_cdr_fb", 54 "sgmii2_tx250m", "sgmii2_rx250m", "sgmii2_cdr_ref", "sgmii2_cdr_fb", 55 "sgmii_ck", "eth2pll", 56 }; 57 58 void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg) 59 { 60 __raw_writel(val, eth->base + reg); 61 } 62 63 u32 mtk_r32(struct mtk_eth *eth, unsigned reg) 64 { 65 return __raw_readl(eth->base + reg); 66 } 67 68 static int mtk_mdio_busy_wait(struct mtk_eth *eth) 69 { 70 unsigned long t_start = jiffies; 71 72 while (1) { 73 if (!(mtk_r32(eth, MTK_PHY_IAC) & PHY_IAC_ACCESS)) 74 return 0; 75 if (time_after(jiffies, t_start + PHY_IAC_TIMEOUT)) 76 break; 77 usleep_range(10, 20); 78 } 79 80 dev_err(eth->dev, "mdio: MDIO timeout\n"); 81 return -1; 82 } 83 84 static u32 _mtk_mdio_write(struct mtk_eth *eth, u32 phy_addr, 85 u32 phy_register, u32 write_data) 86 { 87 if (mtk_mdio_busy_wait(eth)) 88 return -1; 89 90 write_data &= 0xffff; 91 92 mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START | PHY_IAC_WRITE | 93 (phy_register << PHY_IAC_REG_SHIFT) | 94 (phy_addr << PHY_IAC_ADDR_SHIFT) | write_data, 95 MTK_PHY_IAC); 96 97 if (mtk_mdio_busy_wait(eth)) 98 return -1; 99 100 return 0; 101 } 102 103 static u32 _mtk_mdio_read(struct mtk_eth *eth, int phy_addr, int phy_reg) 104 { 105 u32 d; 106 107 if (mtk_mdio_busy_wait(eth)) 108 return 0xffff; 109 110 mtk_w32(eth, PHY_IAC_ACCESS | PHY_IAC_START | PHY_IAC_READ | 111 (phy_reg << PHY_IAC_REG_SHIFT) | 112 (phy_addr << PHY_IAC_ADDR_SHIFT), 113 MTK_PHY_IAC); 114 115 if (mtk_mdio_busy_wait(eth)) 116 return 0xffff; 117 118 d = mtk_r32(eth, MTK_PHY_IAC) & 0xffff; 119 120 return d; 121 } 122 123 static int mtk_mdio_write(struct mii_bus *bus, int phy_addr, 124 int phy_reg, u16 val) 125 { 126 struct mtk_eth *eth = bus->priv; 127 128 return _mtk_mdio_write(eth, phy_addr, phy_reg, val); 129 } 130 131 static int mtk_mdio_read(struct mii_bus *bus, int phy_addr, int phy_reg) 132 { 133 struct mtk_eth *eth = bus->priv; 134 135 return _mtk_mdio_read(eth, phy_addr, phy_reg); 136 } 137 138 static int mt7621_gmac0_rgmii_adjust(struct mtk_eth *eth, 139 phy_interface_t interface) 140 { 141 u32 val; 142 143 /* Check DDR memory type. 144 * Currently TRGMII mode with DDR2 memory is not supported. 145 */ 146 regmap_read(eth->ethsys, ETHSYS_SYSCFG, &val); 147 if (interface == PHY_INTERFACE_MODE_TRGMII && 148 val & SYSCFG_DRAM_TYPE_DDR2) { 149 dev_err(eth->dev, 150 "TRGMII mode with DDR2 memory is not supported!\n"); 151 return -EOPNOTSUPP; 152 } 153 154 val = (interface == PHY_INTERFACE_MODE_TRGMII) ? 155 ETHSYS_TRGMII_MT7621_DDR_PLL : 0; 156 157 regmap_update_bits(eth->ethsys, ETHSYS_CLKCFG0, 158 ETHSYS_TRGMII_MT7621_MASK, val); 159 160 return 0; 161 } 162 163 static void mtk_gmac0_rgmii_adjust(struct mtk_eth *eth, int speed) 164 { 165 u32 val; 166 int ret; 167 168 val = (speed == SPEED_1000) ? 169 INTF_MODE_RGMII_1000 : INTF_MODE_RGMII_10_100; 170 mtk_w32(eth, val, INTF_MODE); 171 172 regmap_update_bits(eth->ethsys, ETHSYS_CLKCFG0, 173 ETHSYS_TRGMII_CLK_SEL362_5, 174 ETHSYS_TRGMII_CLK_SEL362_5); 175 176 val = (speed == SPEED_1000) ? 250000000 : 500000000; 177 ret = clk_set_rate(eth->clks[MTK_CLK_TRGPLL], val); 178 if (ret) 179 dev_err(eth->dev, "Failed to set trgmii pll: %d\n", ret); 180 181 val = (speed == SPEED_1000) ? 182 RCK_CTRL_RGMII_1000 : RCK_CTRL_RGMII_10_100; 183 mtk_w32(eth, val, TRGMII_RCK_CTRL); 184 185 val = (speed == SPEED_1000) ? 186 TCK_CTRL_RGMII_1000 : TCK_CTRL_RGMII_10_100; 187 mtk_w32(eth, val, TRGMII_TCK_CTRL); 188 } 189 190 static void mtk_mac_config(struct phylink_config *config, unsigned int mode, 191 const struct phylink_link_state *state) 192 { 193 struct mtk_mac *mac = container_of(config, struct mtk_mac, 194 phylink_config); 195 struct mtk_eth *eth = mac->hw; 196 u32 mcr_cur, mcr_new, sid; 197 int val, ge_mode, err; 198 199 /* MT76x8 has no hardware settings between for the MAC */ 200 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628) && 201 mac->interface != state->interface) { 202 /* Setup soc pin functions */ 203 switch (state->interface) { 204 case PHY_INTERFACE_MODE_TRGMII: 205 if (mac->id) 206 goto err_phy; 207 if (!MTK_HAS_CAPS(mac->hw->soc->caps, 208 MTK_GMAC1_TRGMII)) 209 goto err_phy; 210 /* fall through */ 211 case PHY_INTERFACE_MODE_RGMII_TXID: 212 case PHY_INTERFACE_MODE_RGMII_RXID: 213 case PHY_INTERFACE_MODE_RGMII_ID: 214 case PHY_INTERFACE_MODE_RGMII: 215 case PHY_INTERFACE_MODE_MII: 216 case PHY_INTERFACE_MODE_REVMII: 217 case PHY_INTERFACE_MODE_RMII: 218 if (MTK_HAS_CAPS(eth->soc->caps, MTK_RGMII)) { 219 err = mtk_gmac_rgmii_path_setup(eth, mac->id); 220 if (err) 221 goto init_err; 222 } 223 break; 224 case PHY_INTERFACE_MODE_1000BASEX: 225 case PHY_INTERFACE_MODE_2500BASEX: 226 case PHY_INTERFACE_MODE_SGMII: 227 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SGMII)) { 228 err = mtk_gmac_sgmii_path_setup(eth, mac->id); 229 if (err) 230 goto init_err; 231 } 232 break; 233 case PHY_INTERFACE_MODE_GMII: 234 if (MTK_HAS_CAPS(eth->soc->caps, MTK_GEPHY)) { 235 err = mtk_gmac_gephy_path_setup(eth, mac->id); 236 if (err) 237 goto init_err; 238 } 239 break; 240 default: 241 goto err_phy; 242 } 243 244 /* Setup clock for 1st gmac */ 245 if (!mac->id && state->interface != PHY_INTERFACE_MODE_SGMII && 246 !phy_interface_mode_is_8023z(state->interface) && 247 MTK_HAS_CAPS(mac->hw->soc->caps, MTK_GMAC1_TRGMII)) { 248 if (MTK_HAS_CAPS(mac->hw->soc->caps, 249 MTK_TRGMII_MT7621_CLK)) { 250 if (mt7621_gmac0_rgmii_adjust(mac->hw, 251 state->interface)) 252 goto err_phy; 253 } else { 254 if (state->interface != 255 PHY_INTERFACE_MODE_TRGMII) 256 mtk_gmac0_rgmii_adjust(mac->hw, 257 state->speed); 258 } 259 } 260 261 ge_mode = 0; 262 switch (state->interface) { 263 case PHY_INTERFACE_MODE_MII: 264 case PHY_INTERFACE_MODE_GMII: 265 ge_mode = 1; 266 break; 267 case PHY_INTERFACE_MODE_REVMII: 268 ge_mode = 2; 269 break; 270 case PHY_INTERFACE_MODE_RMII: 271 if (mac->id) 272 goto err_phy; 273 ge_mode = 3; 274 break; 275 default: 276 break; 277 } 278 279 /* put the gmac into the right mode */ 280 regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val); 281 val &= ~SYSCFG0_GE_MODE(SYSCFG0_GE_MASK, mac->id); 282 val |= SYSCFG0_GE_MODE(ge_mode, mac->id); 283 regmap_write(eth->ethsys, ETHSYS_SYSCFG0, val); 284 285 mac->interface = state->interface; 286 } 287 288 /* SGMII */ 289 if (state->interface == PHY_INTERFACE_MODE_SGMII || 290 phy_interface_mode_is_8023z(state->interface)) { 291 /* The path GMAC to SGMII will be enabled once the SGMIISYS is 292 * being setup done. 293 */ 294 regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val); 295 296 regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0, 297 SYSCFG0_SGMII_MASK, 298 ~(u32)SYSCFG0_SGMII_MASK); 299 300 /* Decide how GMAC and SGMIISYS be mapped */ 301 sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ? 302 0 : mac->id; 303 304 /* Setup SGMIISYS with the determined property */ 305 if (state->interface != PHY_INTERFACE_MODE_SGMII) 306 err = mtk_sgmii_setup_mode_force(eth->sgmii, sid, 307 state); 308 else if (phylink_autoneg_inband(mode)) 309 err = mtk_sgmii_setup_mode_an(eth->sgmii, sid); 310 311 if (err) 312 goto init_err; 313 314 regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0, 315 SYSCFG0_SGMII_MASK, val); 316 } else if (phylink_autoneg_inband(mode)) { 317 dev_err(eth->dev, 318 "In-band mode not supported in non SGMII mode!\n"); 319 return; 320 } 321 322 /* Setup gmac */ 323 mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); 324 mcr_new = mcr_cur; 325 mcr_new &= ~(MAC_MCR_SPEED_100 | MAC_MCR_SPEED_1000 | 326 MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_TX_FC | 327 MAC_MCR_FORCE_RX_FC); 328 mcr_new |= MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | 329 MAC_MCR_BACKOFF_EN | MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_LINK; 330 331 switch (state->speed) { 332 case SPEED_2500: 333 case SPEED_1000: 334 mcr_new |= MAC_MCR_SPEED_1000; 335 break; 336 case SPEED_100: 337 mcr_new |= MAC_MCR_SPEED_100; 338 break; 339 } 340 if (state->duplex == DUPLEX_FULL) { 341 mcr_new |= MAC_MCR_FORCE_DPX; 342 if (state->pause & MLO_PAUSE_TX) 343 mcr_new |= MAC_MCR_FORCE_TX_FC; 344 if (state->pause & MLO_PAUSE_RX) 345 mcr_new |= MAC_MCR_FORCE_RX_FC; 346 } 347 348 /* Only update control register when needed! */ 349 if (mcr_new != mcr_cur) 350 mtk_w32(mac->hw, mcr_new, MTK_MAC_MCR(mac->id)); 351 352 return; 353 354 err_phy: 355 dev_err(eth->dev, "%s: GMAC%d mode %s not supported!\n", __func__, 356 mac->id, phy_modes(state->interface)); 357 return; 358 359 init_err: 360 dev_err(eth->dev, "%s: GMAC%d mode %s err: %d!\n", __func__, 361 mac->id, phy_modes(state->interface), err); 362 } 363 364 static void mtk_mac_pcs_get_state(struct phylink_config *config, 365 struct phylink_link_state *state) 366 { 367 struct mtk_mac *mac = container_of(config, struct mtk_mac, 368 phylink_config); 369 u32 pmsr = mtk_r32(mac->hw, MTK_MAC_MSR(mac->id)); 370 371 state->link = (pmsr & MAC_MSR_LINK); 372 state->duplex = (pmsr & MAC_MSR_DPX) >> 1; 373 374 switch (pmsr & (MAC_MSR_SPEED_1000 | MAC_MSR_SPEED_100)) { 375 case 0: 376 state->speed = SPEED_10; 377 break; 378 case MAC_MSR_SPEED_100: 379 state->speed = SPEED_100; 380 break; 381 case MAC_MSR_SPEED_1000: 382 state->speed = SPEED_1000; 383 break; 384 default: 385 state->speed = SPEED_UNKNOWN; 386 break; 387 } 388 389 state->pause &= (MLO_PAUSE_RX | MLO_PAUSE_TX); 390 if (pmsr & MAC_MSR_RX_FC) 391 state->pause |= MLO_PAUSE_RX; 392 if (pmsr & MAC_MSR_TX_FC) 393 state->pause |= MLO_PAUSE_TX; 394 } 395 396 static void mtk_mac_an_restart(struct phylink_config *config) 397 { 398 struct mtk_mac *mac = container_of(config, struct mtk_mac, 399 phylink_config); 400 401 mtk_sgmii_restart_an(mac->hw, mac->id); 402 } 403 404 static void mtk_mac_link_down(struct phylink_config *config, unsigned int mode, 405 phy_interface_t interface) 406 { 407 struct mtk_mac *mac = container_of(config, struct mtk_mac, 408 phylink_config); 409 u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); 410 411 mcr &= ~(MAC_MCR_TX_EN | MAC_MCR_RX_EN); 412 mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); 413 } 414 415 static void mtk_mac_link_up(struct phylink_config *config, unsigned int mode, 416 phy_interface_t interface, 417 struct phy_device *phy) 418 { 419 struct mtk_mac *mac = container_of(config, struct mtk_mac, 420 phylink_config); 421 u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); 422 423 mcr |= MAC_MCR_TX_EN | MAC_MCR_RX_EN; 424 mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); 425 } 426 427 static void mtk_validate(struct phylink_config *config, 428 unsigned long *supported, 429 struct phylink_link_state *state) 430 { 431 struct mtk_mac *mac = container_of(config, struct mtk_mac, 432 phylink_config); 433 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, }; 434 435 if (state->interface != PHY_INTERFACE_MODE_NA && 436 state->interface != PHY_INTERFACE_MODE_MII && 437 state->interface != PHY_INTERFACE_MODE_GMII && 438 !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_RGMII) && 439 phy_interface_mode_is_rgmii(state->interface)) && 440 !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_TRGMII) && 441 !mac->id && state->interface == PHY_INTERFACE_MODE_TRGMII) && 442 !(MTK_HAS_CAPS(mac->hw->soc->caps, MTK_SGMII) && 443 (state->interface == PHY_INTERFACE_MODE_SGMII || 444 phy_interface_mode_is_8023z(state->interface)))) { 445 linkmode_zero(supported); 446 return; 447 } 448 449 phylink_set_port_modes(mask); 450 phylink_set(mask, Autoneg); 451 452 switch (state->interface) { 453 case PHY_INTERFACE_MODE_TRGMII: 454 phylink_set(mask, 1000baseT_Full); 455 break; 456 case PHY_INTERFACE_MODE_1000BASEX: 457 case PHY_INTERFACE_MODE_2500BASEX: 458 phylink_set(mask, 1000baseX_Full); 459 phylink_set(mask, 2500baseX_Full); 460 break; 461 case PHY_INTERFACE_MODE_GMII: 462 case PHY_INTERFACE_MODE_RGMII: 463 case PHY_INTERFACE_MODE_RGMII_ID: 464 case PHY_INTERFACE_MODE_RGMII_RXID: 465 case PHY_INTERFACE_MODE_RGMII_TXID: 466 phylink_set(mask, 1000baseT_Half); 467 /* fall through */ 468 case PHY_INTERFACE_MODE_SGMII: 469 phylink_set(mask, 1000baseT_Full); 470 phylink_set(mask, 1000baseX_Full); 471 /* fall through */ 472 case PHY_INTERFACE_MODE_MII: 473 case PHY_INTERFACE_MODE_RMII: 474 case PHY_INTERFACE_MODE_REVMII: 475 case PHY_INTERFACE_MODE_NA: 476 default: 477 phylink_set(mask, 10baseT_Half); 478 phylink_set(mask, 10baseT_Full); 479 phylink_set(mask, 100baseT_Half); 480 phylink_set(mask, 100baseT_Full); 481 break; 482 } 483 484 if (state->interface == PHY_INTERFACE_MODE_NA) { 485 if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_SGMII)) { 486 phylink_set(mask, 1000baseT_Full); 487 phylink_set(mask, 1000baseX_Full); 488 phylink_set(mask, 2500baseX_Full); 489 } 490 if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_RGMII)) { 491 phylink_set(mask, 1000baseT_Full); 492 phylink_set(mask, 1000baseT_Half); 493 phylink_set(mask, 1000baseX_Full); 494 } 495 if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_GEPHY)) { 496 phylink_set(mask, 1000baseT_Full); 497 phylink_set(mask, 1000baseT_Half); 498 } 499 } 500 501 phylink_set(mask, Pause); 502 phylink_set(mask, Asym_Pause); 503 504 linkmode_and(supported, supported, mask); 505 linkmode_and(state->advertising, state->advertising, mask); 506 507 /* We can only operate at 2500BaseX or 1000BaseX. If requested 508 * to advertise both, only report advertising at 2500BaseX. 509 */ 510 phylink_helper_basex_speed(state); 511 } 512 513 static const struct phylink_mac_ops mtk_phylink_ops = { 514 .validate = mtk_validate, 515 .mac_pcs_get_state = mtk_mac_pcs_get_state, 516 .mac_an_restart = mtk_mac_an_restart, 517 .mac_config = mtk_mac_config, 518 .mac_link_down = mtk_mac_link_down, 519 .mac_link_up = mtk_mac_link_up, 520 }; 521 522 static int mtk_mdio_init(struct mtk_eth *eth) 523 { 524 struct device_node *mii_np; 525 int ret; 526 527 mii_np = of_get_child_by_name(eth->dev->of_node, "mdio-bus"); 528 if (!mii_np) { 529 dev_err(eth->dev, "no %s child node found", "mdio-bus"); 530 return -ENODEV; 531 } 532 533 if (!of_device_is_available(mii_np)) { 534 ret = -ENODEV; 535 goto err_put_node; 536 } 537 538 eth->mii_bus = devm_mdiobus_alloc(eth->dev); 539 if (!eth->mii_bus) { 540 ret = -ENOMEM; 541 goto err_put_node; 542 } 543 544 eth->mii_bus->name = "mdio"; 545 eth->mii_bus->read = mtk_mdio_read; 546 eth->mii_bus->write = mtk_mdio_write; 547 eth->mii_bus->priv = eth; 548 eth->mii_bus->parent = eth->dev; 549 550 snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%pOFn", mii_np); 551 ret = of_mdiobus_register(eth->mii_bus, mii_np); 552 553 err_put_node: 554 of_node_put(mii_np); 555 return ret; 556 } 557 558 static void mtk_mdio_cleanup(struct mtk_eth *eth) 559 { 560 if (!eth->mii_bus) 561 return; 562 563 mdiobus_unregister(eth->mii_bus); 564 } 565 566 static inline void mtk_tx_irq_disable(struct mtk_eth *eth, u32 mask) 567 { 568 unsigned long flags; 569 u32 val; 570 571 spin_lock_irqsave(ð->tx_irq_lock, flags); 572 val = mtk_r32(eth, eth->tx_int_mask_reg); 573 mtk_w32(eth, val & ~mask, eth->tx_int_mask_reg); 574 spin_unlock_irqrestore(ð->tx_irq_lock, flags); 575 } 576 577 static inline void mtk_tx_irq_enable(struct mtk_eth *eth, u32 mask) 578 { 579 unsigned long flags; 580 u32 val; 581 582 spin_lock_irqsave(ð->tx_irq_lock, flags); 583 val = mtk_r32(eth, eth->tx_int_mask_reg); 584 mtk_w32(eth, val | mask, eth->tx_int_mask_reg); 585 spin_unlock_irqrestore(ð->tx_irq_lock, flags); 586 } 587 588 static inline void mtk_rx_irq_disable(struct mtk_eth *eth, u32 mask) 589 { 590 unsigned long flags; 591 u32 val; 592 593 spin_lock_irqsave(ð->rx_irq_lock, flags); 594 val = mtk_r32(eth, MTK_PDMA_INT_MASK); 595 mtk_w32(eth, val & ~mask, MTK_PDMA_INT_MASK); 596 spin_unlock_irqrestore(ð->rx_irq_lock, flags); 597 } 598 599 static inline void mtk_rx_irq_enable(struct mtk_eth *eth, u32 mask) 600 { 601 unsigned long flags; 602 u32 val; 603 604 spin_lock_irqsave(ð->rx_irq_lock, flags); 605 val = mtk_r32(eth, MTK_PDMA_INT_MASK); 606 mtk_w32(eth, val | mask, MTK_PDMA_INT_MASK); 607 spin_unlock_irqrestore(ð->rx_irq_lock, flags); 608 } 609 610 static int mtk_set_mac_address(struct net_device *dev, void *p) 611 { 612 int ret = eth_mac_addr(dev, p); 613 struct mtk_mac *mac = netdev_priv(dev); 614 struct mtk_eth *eth = mac->hw; 615 const char *macaddr = dev->dev_addr; 616 617 if (ret) 618 return ret; 619 620 if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) 621 return -EBUSY; 622 623 spin_lock_bh(&mac->hw->page_lock); 624 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 625 mtk_w32(mac->hw, (macaddr[0] << 8) | macaddr[1], 626 MT7628_SDM_MAC_ADRH); 627 mtk_w32(mac->hw, (macaddr[2] << 24) | (macaddr[3] << 16) | 628 (macaddr[4] << 8) | macaddr[5], 629 MT7628_SDM_MAC_ADRL); 630 } else { 631 mtk_w32(mac->hw, (macaddr[0] << 8) | macaddr[1], 632 MTK_GDMA_MAC_ADRH(mac->id)); 633 mtk_w32(mac->hw, (macaddr[2] << 24) | (macaddr[3] << 16) | 634 (macaddr[4] << 8) | macaddr[5], 635 MTK_GDMA_MAC_ADRL(mac->id)); 636 } 637 spin_unlock_bh(&mac->hw->page_lock); 638 639 return 0; 640 } 641 642 void mtk_stats_update_mac(struct mtk_mac *mac) 643 { 644 struct mtk_hw_stats *hw_stats = mac->hw_stats; 645 unsigned int base = MTK_GDM1_TX_GBCNT; 646 u64 stats; 647 648 base += hw_stats->reg_offset; 649 650 u64_stats_update_begin(&hw_stats->syncp); 651 652 hw_stats->rx_bytes += mtk_r32(mac->hw, base); 653 stats = mtk_r32(mac->hw, base + 0x04); 654 if (stats) 655 hw_stats->rx_bytes += (stats << 32); 656 hw_stats->rx_packets += mtk_r32(mac->hw, base + 0x08); 657 hw_stats->rx_overflow += mtk_r32(mac->hw, base + 0x10); 658 hw_stats->rx_fcs_errors += mtk_r32(mac->hw, base + 0x14); 659 hw_stats->rx_short_errors += mtk_r32(mac->hw, base + 0x18); 660 hw_stats->rx_long_errors += mtk_r32(mac->hw, base + 0x1c); 661 hw_stats->rx_checksum_errors += mtk_r32(mac->hw, base + 0x20); 662 hw_stats->rx_flow_control_packets += 663 mtk_r32(mac->hw, base + 0x24); 664 hw_stats->tx_skip += mtk_r32(mac->hw, base + 0x28); 665 hw_stats->tx_collisions += mtk_r32(mac->hw, base + 0x2c); 666 hw_stats->tx_bytes += mtk_r32(mac->hw, base + 0x30); 667 stats = mtk_r32(mac->hw, base + 0x34); 668 if (stats) 669 hw_stats->tx_bytes += (stats << 32); 670 hw_stats->tx_packets += mtk_r32(mac->hw, base + 0x38); 671 u64_stats_update_end(&hw_stats->syncp); 672 } 673 674 static void mtk_stats_update(struct mtk_eth *eth) 675 { 676 int i; 677 678 for (i = 0; i < MTK_MAC_COUNT; i++) { 679 if (!eth->mac[i] || !eth->mac[i]->hw_stats) 680 continue; 681 if (spin_trylock(ð->mac[i]->hw_stats->stats_lock)) { 682 mtk_stats_update_mac(eth->mac[i]); 683 spin_unlock(ð->mac[i]->hw_stats->stats_lock); 684 } 685 } 686 } 687 688 static void mtk_get_stats64(struct net_device *dev, 689 struct rtnl_link_stats64 *storage) 690 { 691 struct mtk_mac *mac = netdev_priv(dev); 692 struct mtk_hw_stats *hw_stats = mac->hw_stats; 693 unsigned int start; 694 695 if (netif_running(dev) && netif_device_present(dev)) { 696 if (spin_trylock_bh(&hw_stats->stats_lock)) { 697 mtk_stats_update_mac(mac); 698 spin_unlock_bh(&hw_stats->stats_lock); 699 } 700 } 701 702 do { 703 start = u64_stats_fetch_begin_irq(&hw_stats->syncp); 704 storage->rx_packets = hw_stats->rx_packets; 705 storage->tx_packets = hw_stats->tx_packets; 706 storage->rx_bytes = hw_stats->rx_bytes; 707 storage->tx_bytes = hw_stats->tx_bytes; 708 storage->collisions = hw_stats->tx_collisions; 709 storage->rx_length_errors = hw_stats->rx_short_errors + 710 hw_stats->rx_long_errors; 711 storage->rx_over_errors = hw_stats->rx_overflow; 712 storage->rx_crc_errors = hw_stats->rx_fcs_errors; 713 storage->rx_errors = hw_stats->rx_checksum_errors; 714 storage->tx_aborted_errors = hw_stats->tx_skip; 715 } while (u64_stats_fetch_retry_irq(&hw_stats->syncp, start)); 716 717 storage->tx_errors = dev->stats.tx_errors; 718 storage->rx_dropped = dev->stats.rx_dropped; 719 storage->tx_dropped = dev->stats.tx_dropped; 720 } 721 722 static inline int mtk_max_frag_size(int mtu) 723 { 724 /* make sure buf_size will be at least MTK_MAX_RX_LENGTH */ 725 if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH) 726 mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; 727 728 return SKB_DATA_ALIGN(MTK_RX_HLEN + mtu) + 729 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); 730 } 731 732 static inline int mtk_max_buf_size(int frag_size) 733 { 734 int buf_size = frag_size - NET_SKB_PAD - NET_IP_ALIGN - 735 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); 736 737 WARN_ON(buf_size < MTK_MAX_RX_LENGTH); 738 739 return buf_size; 740 } 741 742 static inline void mtk_rx_get_desc(struct mtk_rx_dma *rxd, 743 struct mtk_rx_dma *dma_rxd) 744 { 745 rxd->rxd1 = READ_ONCE(dma_rxd->rxd1); 746 rxd->rxd2 = READ_ONCE(dma_rxd->rxd2); 747 rxd->rxd3 = READ_ONCE(dma_rxd->rxd3); 748 rxd->rxd4 = READ_ONCE(dma_rxd->rxd4); 749 } 750 751 /* the qdma core needs scratch memory to be setup */ 752 static int mtk_init_fq_dma(struct mtk_eth *eth) 753 { 754 dma_addr_t phy_ring_tail; 755 int cnt = MTK_DMA_SIZE; 756 dma_addr_t dma_addr; 757 int i; 758 759 eth->scratch_ring = dma_alloc_coherent(eth->dev, 760 cnt * sizeof(struct mtk_tx_dma), 761 ð->phy_scratch_ring, 762 GFP_ATOMIC); 763 if (unlikely(!eth->scratch_ring)) 764 return -ENOMEM; 765 766 eth->scratch_head = kcalloc(cnt, MTK_QDMA_PAGE_SIZE, 767 GFP_KERNEL); 768 if (unlikely(!eth->scratch_head)) 769 return -ENOMEM; 770 771 dma_addr = dma_map_single(eth->dev, 772 eth->scratch_head, cnt * MTK_QDMA_PAGE_SIZE, 773 DMA_FROM_DEVICE); 774 if (unlikely(dma_mapping_error(eth->dev, dma_addr))) 775 return -ENOMEM; 776 777 phy_ring_tail = eth->phy_scratch_ring + 778 (sizeof(struct mtk_tx_dma) * (cnt - 1)); 779 780 for (i = 0; i < cnt; i++) { 781 eth->scratch_ring[i].txd1 = 782 (dma_addr + (i * MTK_QDMA_PAGE_SIZE)); 783 if (i < cnt - 1) 784 eth->scratch_ring[i].txd2 = (eth->phy_scratch_ring + 785 ((i + 1) * sizeof(struct mtk_tx_dma))); 786 eth->scratch_ring[i].txd3 = TX_DMA_SDL(MTK_QDMA_PAGE_SIZE); 787 } 788 789 mtk_w32(eth, eth->phy_scratch_ring, MTK_QDMA_FQ_HEAD); 790 mtk_w32(eth, phy_ring_tail, MTK_QDMA_FQ_TAIL); 791 mtk_w32(eth, (cnt << 16) | cnt, MTK_QDMA_FQ_CNT); 792 mtk_w32(eth, MTK_QDMA_PAGE_SIZE << 16, MTK_QDMA_FQ_BLEN); 793 794 return 0; 795 } 796 797 static inline void *mtk_qdma_phys_to_virt(struct mtk_tx_ring *ring, u32 desc) 798 { 799 void *ret = ring->dma; 800 801 return ret + (desc - ring->phys); 802 } 803 804 static inline struct mtk_tx_buf *mtk_desc_to_tx_buf(struct mtk_tx_ring *ring, 805 struct mtk_tx_dma *txd) 806 { 807 int idx = txd - ring->dma; 808 809 return &ring->buf[idx]; 810 } 811 812 static struct mtk_tx_dma *qdma_to_pdma(struct mtk_tx_ring *ring, 813 struct mtk_tx_dma *dma) 814 { 815 return ring->dma_pdma - ring->dma + dma; 816 } 817 818 static int txd_to_idx(struct mtk_tx_ring *ring, struct mtk_tx_dma *dma) 819 { 820 return ((void *)dma - (void *)ring->dma) / sizeof(*dma); 821 } 822 823 static void mtk_tx_unmap(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf) 824 { 825 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 826 if (tx_buf->flags & MTK_TX_FLAGS_SINGLE0) { 827 dma_unmap_single(eth->dev, 828 dma_unmap_addr(tx_buf, dma_addr0), 829 dma_unmap_len(tx_buf, dma_len0), 830 DMA_TO_DEVICE); 831 } else if (tx_buf->flags & MTK_TX_FLAGS_PAGE0) { 832 dma_unmap_page(eth->dev, 833 dma_unmap_addr(tx_buf, dma_addr0), 834 dma_unmap_len(tx_buf, dma_len0), 835 DMA_TO_DEVICE); 836 } 837 } else { 838 if (dma_unmap_len(tx_buf, dma_len0)) { 839 dma_unmap_page(eth->dev, 840 dma_unmap_addr(tx_buf, dma_addr0), 841 dma_unmap_len(tx_buf, dma_len0), 842 DMA_TO_DEVICE); 843 } 844 845 if (dma_unmap_len(tx_buf, dma_len1)) { 846 dma_unmap_page(eth->dev, 847 dma_unmap_addr(tx_buf, dma_addr1), 848 dma_unmap_len(tx_buf, dma_len1), 849 DMA_TO_DEVICE); 850 } 851 } 852 853 tx_buf->flags = 0; 854 if (tx_buf->skb && 855 (tx_buf->skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC)) 856 dev_kfree_skb_any(tx_buf->skb); 857 tx_buf->skb = NULL; 858 } 859 860 static void setup_tx_buf(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf, 861 struct mtk_tx_dma *txd, dma_addr_t mapped_addr, 862 size_t size, int idx) 863 { 864 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 865 dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr); 866 dma_unmap_len_set(tx_buf, dma_len0, size); 867 } else { 868 if (idx & 1) { 869 txd->txd3 = mapped_addr; 870 txd->txd2 |= TX_DMA_PLEN1(size); 871 dma_unmap_addr_set(tx_buf, dma_addr1, mapped_addr); 872 dma_unmap_len_set(tx_buf, dma_len1, size); 873 } else { 874 tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC; 875 txd->txd1 = mapped_addr; 876 txd->txd2 = TX_DMA_PLEN0(size); 877 dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr); 878 dma_unmap_len_set(tx_buf, dma_len0, size); 879 } 880 } 881 } 882 883 static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, 884 int tx_num, struct mtk_tx_ring *ring, bool gso) 885 { 886 struct mtk_mac *mac = netdev_priv(dev); 887 struct mtk_eth *eth = mac->hw; 888 struct mtk_tx_dma *itxd, *txd; 889 struct mtk_tx_dma *itxd_pdma, *txd_pdma; 890 struct mtk_tx_buf *itx_buf, *tx_buf; 891 dma_addr_t mapped_addr; 892 unsigned int nr_frags; 893 int i, n_desc = 1; 894 u32 txd4 = 0, fport; 895 int k = 0; 896 897 itxd = ring->next_free; 898 itxd_pdma = qdma_to_pdma(ring, itxd); 899 if (itxd == ring->last_free) 900 return -ENOMEM; 901 902 /* set the forward port */ 903 fport = (mac->id + 1) << TX_DMA_FPORT_SHIFT; 904 txd4 |= fport; 905 906 itx_buf = mtk_desc_to_tx_buf(ring, itxd); 907 memset(itx_buf, 0, sizeof(*itx_buf)); 908 909 if (gso) 910 txd4 |= TX_DMA_TSO; 911 912 /* TX Checksum offload */ 913 if (skb->ip_summed == CHECKSUM_PARTIAL) 914 txd4 |= TX_DMA_CHKSUM; 915 916 /* VLAN header offload */ 917 if (skb_vlan_tag_present(skb)) 918 txd4 |= TX_DMA_INS_VLAN | skb_vlan_tag_get(skb); 919 920 mapped_addr = dma_map_single(eth->dev, skb->data, 921 skb_headlen(skb), DMA_TO_DEVICE); 922 if (unlikely(dma_mapping_error(eth->dev, mapped_addr))) 923 return -ENOMEM; 924 925 WRITE_ONCE(itxd->txd1, mapped_addr); 926 itx_buf->flags |= MTK_TX_FLAGS_SINGLE0; 927 itx_buf->flags |= (!mac->id) ? MTK_TX_FLAGS_FPORT0 : 928 MTK_TX_FLAGS_FPORT1; 929 setup_tx_buf(eth, itx_buf, itxd_pdma, mapped_addr, skb_headlen(skb), 930 k++); 931 932 /* TX SG offload */ 933 txd = itxd; 934 txd_pdma = qdma_to_pdma(ring, txd); 935 nr_frags = skb_shinfo(skb)->nr_frags; 936 937 for (i = 0; i < nr_frags; i++) { 938 skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 939 unsigned int offset = 0; 940 int frag_size = skb_frag_size(frag); 941 942 while (frag_size) { 943 bool last_frag = false; 944 unsigned int frag_map_size; 945 bool new_desc = true; 946 947 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA) || 948 (i & 0x1)) { 949 txd = mtk_qdma_phys_to_virt(ring, txd->txd2); 950 txd_pdma = qdma_to_pdma(ring, txd); 951 if (txd == ring->last_free) 952 goto err_dma; 953 954 n_desc++; 955 } else { 956 new_desc = false; 957 } 958 959 960 frag_map_size = min(frag_size, MTK_TX_DMA_BUF_LEN); 961 mapped_addr = skb_frag_dma_map(eth->dev, frag, offset, 962 frag_map_size, 963 DMA_TO_DEVICE); 964 if (unlikely(dma_mapping_error(eth->dev, mapped_addr))) 965 goto err_dma; 966 967 if (i == nr_frags - 1 && 968 (frag_size - frag_map_size) == 0) 969 last_frag = true; 970 971 WRITE_ONCE(txd->txd1, mapped_addr); 972 WRITE_ONCE(txd->txd3, (TX_DMA_SWC | 973 TX_DMA_PLEN0(frag_map_size) | 974 last_frag * TX_DMA_LS0)); 975 WRITE_ONCE(txd->txd4, fport); 976 977 tx_buf = mtk_desc_to_tx_buf(ring, txd); 978 if (new_desc) 979 memset(tx_buf, 0, sizeof(*tx_buf)); 980 tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC; 981 tx_buf->flags |= MTK_TX_FLAGS_PAGE0; 982 tx_buf->flags |= (!mac->id) ? MTK_TX_FLAGS_FPORT0 : 983 MTK_TX_FLAGS_FPORT1; 984 985 setup_tx_buf(eth, tx_buf, txd_pdma, mapped_addr, 986 frag_map_size, k++); 987 988 frag_size -= frag_map_size; 989 offset += frag_map_size; 990 } 991 } 992 993 /* store skb to cleanup */ 994 itx_buf->skb = skb; 995 996 WRITE_ONCE(itxd->txd4, txd4); 997 WRITE_ONCE(itxd->txd3, (TX_DMA_SWC | TX_DMA_PLEN0(skb_headlen(skb)) | 998 (!nr_frags * TX_DMA_LS0))); 999 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 1000 if (k & 0x1) 1001 txd_pdma->txd2 |= TX_DMA_LS0; 1002 else 1003 txd_pdma->txd2 |= TX_DMA_LS1; 1004 } 1005 1006 netdev_sent_queue(dev, skb->len); 1007 skb_tx_timestamp(skb); 1008 1009 ring->next_free = mtk_qdma_phys_to_virt(ring, txd->txd2); 1010 atomic_sub(n_desc, &ring->free_count); 1011 1012 /* make sure that all changes to the dma ring are flushed before we 1013 * continue 1014 */ 1015 wmb(); 1016 1017 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 1018 if (netif_xmit_stopped(netdev_get_tx_queue(dev, 0)) || 1019 !netdev_xmit_more()) 1020 mtk_w32(eth, txd->txd2, MTK_QTX_CTX_PTR); 1021 } else { 1022 int next_idx = NEXT_DESP_IDX(txd_to_idx(ring, txd), 1023 ring->dma_size); 1024 mtk_w32(eth, next_idx, MT7628_TX_CTX_IDX0); 1025 } 1026 1027 return 0; 1028 1029 err_dma: 1030 do { 1031 tx_buf = mtk_desc_to_tx_buf(ring, itxd); 1032 1033 /* unmap dma */ 1034 mtk_tx_unmap(eth, tx_buf); 1035 1036 itxd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU; 1037 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 1038 itxd_pdma->txd2 = TX_DMA_DESP2_DEF; 1039 1040 itxd = mtk_qdma_phys_to_virt(ring, itxd->txd2); 1041 itxd_pdma = qdma_to_pdma(ring, itxd); 1042 } while (itxd != txd); 1043 1044 return -ENOMEM; 1045 } 1046 1047 static inline int mtk_cal_txd_req(struct sk_buff *skb) 1048 { 1049 int i, nfrags; 1050 skb_frag_t *frag; 1051 1052 nfrags = 1; 1053 if (skb_is_gso(skb)) { 1054 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 1055 frag = &skb_shinfo(skb)->frags[i]; 1056 nfrags += DIV_ROUND_UP(skb_frag_size(frag), 1057 MTK_TX_DMA_BUF_LEN); 1058 } 1059 } else { 1060 nfrags += skb_shinfo(skb)->nr_frags; 1061 } 1062 1063 return nfrags; 1064 } 1065 1066 static int mtk_queue_stopped(struct mtk_eth *eth) 1067 { 1068 int i; 1069 1070 for (i = 0; i < MTK_MAC_COUNT; i++) { 1071 if (!eth->netdev[i]) 1072 continue; 1073 if (netif_queue_stopped(eth->netdev[i])) 1074 return 1; 1075 } 1076 1077 return 0; 1078 } 1079 1080 static void mtk_wake_queue(struct mtk_eth *eth) 1081 { 1082 int i; 1083 1084 for (i = 0; i < MTK_MAC_COUNT; i++) { 1085 if (!eth->netdev[i]) 1086 continue; 1087 netif_wake_queue(eth->netdev[i]); 1088 } 1089 } 1090 1091 static void mtk_stop_queue(struct mtk_eth *eth) 1092 { 1093 int i; 1094 1095 for (i = 0; i < MTK_MAC_COUNT; i++) { 1096 if (!eth->netdev[i]) 1097 continue; 1098 netif_stop_queue(eth->netdev[i]); 1099 } 1100 } 1101 1102 static int mtk_start_xmit(struct sk_buff *skb, struct net_device *dev) 1103 { 1104 struct mtk_mac *mac = netdev_priv(dev); 1105 struct mtk_eth *eth = mac->hw; 1106 struct mtk_tx_ring *ring = ð->tx_ring; 1107 struct net_device_stats *stats = &dev->stats; 1108 bool gso = false; 1109 int tx_num; 1110 1111 /* normally we can rely on the stack not calling this more than once, 1112 * however we have 2 queues running on the same ring so we need to lock 1113 * the ring access 1114 */ 1115 spin_lock(ð->page_lock); 1116 1117 if (unlikely(test_bit(MTK_RESETTING, ð->state))) 1118 goto drop; 1119 1120 tx_num = mtk_cal_txd_req(skb); 1121 if (unlikely(atomic_read(&ring->free_count) <= tx_num)) { 1122 mtk_stop_queue(eth); 1123 netif_err(eth, tx_queued, dev, 1124 "Tx Ring full when queue awake!\n"); 1125 spin_unlock(ð->page_lock); 1126 return NETDEV_TX_BUSY; 1127 } 1128 1129 /* TSO: fill MSS info in tcp checksum field */ 1130 if (skb_is_gso(skb)) { 1131 if (skb_cow_head(skb, 0)) { 1132 netif_warn(eth, tx_err, dev, 1133 "GSO expand head fail.\n"); 1134 goto drop; 1135 } 1136 1137 if (skb_shinfo(skb)->gso_type & 1138 (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) { 1139 gso = true; 1140 tcp_hdr(skb)->check = htons(skb_shinfo(skb)->gso_size); 1141 } 1142 } 1143 1144 if (mtk_tx_map(skb, dev, tx_num, ring, gso) < 0) 1145 goto drop; 1146 1147 if (unlikely(atomic_read(&ring->free_count) <= ring->thresh)) 1148 mtk_stop_queue(eth); 1149 1150 spin_unlock(ð->page_lock); 1151 1152 return NETDEV_TX_OK; 1153 1154 drop: 1155 spin_unlock(ð->page_lock); 1156 stats->tx_dropped++; 1157 dev_kfree_skb_any(skb); 1158 return NETDEV_TX_OK; 1159 } 1160 1161 static struct mtk_rx_ring *mtk_get_rx_ring(struct mtk_eth *eth) 1162 { 1163 int i; 1164 struct mtk_rx_ring *ring; 1165 int idx; 1166 1167 if (!eth->hwlro) 1168 return ð->rx_ring[0]; 1169 1170 for (i = 0; i < MTK_MAX_RX_RING_NUM; i++) { 1171 ring = ð->rx_ring[i]; 1172 idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size); 1173 if (ring->dma[idx].rxd2 & RX_DMA_DONE) { 1174 ring->calc_idx_update = true; 1175 return ring; 1176 } 1177 } 1178 1179 return NULL; 1180 } 1181 1182 static void mtk_update_rx_cpu_idx(struct mtk_eth *eth) 1183 { 1184 struct mtk_rx_ring *ring; 1185 int i; 1186 1187 if (!eth->hwlro) { 1188 ring = ð->rx_ring[0]; 1189 mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg); 1190 } else { 1191 for (i = 0; i < MTK_MAX_RX_RING_NUM; i++) { 1192 ring = ð->rx_ring[i]; 1193 if (ring->calc_idx_update) { 1194 ring->calc_idx_update = false; 1195 mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg); 1196 } 1197 } 1198 } 1199 } 1200 1201 static int mtk_poll_rx(struct napi_struct *napi, int budget, 1202 struct mtk_eth *eth) 1203 { 1204 struct mtk_rx_ring *ring; 1205 int idx; 1206 struct sk_buff *skb; 1207 u8 *data, *new_data; 1208 struct mtk_rx_dma *rxd, trxd; 1209 int done = 0; 1210 1211 while (done < budget) { 1212 struct net_device *netdev; 1213 unsigned int pktlen; 1214 dma_addr_t dma_addr; 1215 int mac; 1216 1217 ring = mtk_get_rx_ring(eth); 1218 if (unlikely(!ring)) 1219 goto rx_done; 1220 1221 idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size); 1222 rxd = &ring->dma[idx]; 1223 data = ring->data[idx]; 1224 1225 mtk_rx_get_desc(&trxd, rxd); 1226 if (!(trxd.rxd2 & RX_DMA_DONE)) 1227 break; 1228 1229 /* find out which mac the packet come from. values start at 1 */ 1230 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 1231 mac = 0; 1232 } else { 1233 mac = (trxd.rxd4 >> RX_DMA_FPORT_SHIFT) & 1234 RX_DMA_FPORT_MASK; 1235 mac--; 1236 } 1237 1238 if (unlikely(mac < 0 || mac >= MTK_MAC_COUNT || 1239 !eth->netdev[mac])) 1240 goto release_desc; 1241 1242 netdev = eth->netdev[mac]; 1243 1244 if (unlikely(test_bit(MTK_RESETTING, ð->state))) 1245 goto release_desc; 1246 1247 /* alloc new buffer */ 1248 new_data = napi_alloc_frag(ring->frag_size); 1249 if (unlikely(!new_data)) { 1250 netdev->stats.rx_dropped++; 1251 goto release_desc; 1252 } 1253 dma_addr = dma_map_single(eth->dev, 1254 new_data + NET_SKB_PAD + 1255 eth->ip_align, 1256 ring->buf_size, 1257 DMA_FROM_DEVICE); 1258 if (unlikely(dma_mapping_error(eth->dev, dma_addr))) { 1259 skb_free_frag(new_data); 1260 netdev->stats.rx_dropped++; 1261 goto release_desc; 1262 } 1263 1264 /* receive data */ 1265 skb = build_skb(data, ring->frag_size); 1266 if (unlikely(!skb)) { 1267 skb_free_frag(new_data); 1268 netdev->stats.rx_dropped++; 1269 goto release_desc; 1270 } 1271 skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN); 1272 1273 dma_unmap_single(eth->dev, trxd.rxd1, 1274 ring->buf_size, DMA_FROM_DEVICE); 1275 pktlen = RX_DMA_GET_PLEN0(trxd.rxd2); 1276 skb->dev = netdev; 1277 skb_put(skb, pktlen); 1278 if (trxd.rxd4 & eth->rx_dma_l4_valid) 1279 skb->ip_summed = CHECKSUM_UNNECESSARY; 1280 else 1281 skb_checksum_none_assert(skb); 1282 skb->protocol = eth_type_trans(skb, netdev); 1283 1284 if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX && 1285 RX_DMA_VID(trxd.rxd3)) 1286 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), 1287 RX_DMA_VID(trxd.rxd3)); 1288 skb_record_rx_queue(skb, 0); 1289 napi_gro_receive(napi, skb); 1290 1291 ring->data[idx] = new_data; 1292 rxd->rxd1 = (unsigned int)dma_addr; 1293 1294 release_desc: 1295 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) 1296 rxd->rxd2 = RX_DMA_LSO; 1297 else 1298 rxd->rxd2 = RX_DMA_PLEN0(ring->buf_size); 1299 1300 ring->calc_idx = idx; 1301 1302 done++; 1303 } 1304 1305 rx_done: 1306 if (done) { 1307 /* make sure that all changes to the dma ring are flushed before 1308 * we continue 1309 */ 1310 wmb(); 1311 mtk_update_rx_cpu_idx(eth); 1312 } 1313 1314 return done; 1315 } 1316 1317 static int mtk_poll_tx_qdma(struct mtk_eth *eth, int budget, 1318 unsigned int *done, unsigned int *bytes) 1319 { 1320 struct mtk_tx_ring *ring = ð->tx_ring; 1321 struct mtk_tx_dma *desc; 1322 struct sk_buff *skb; 1323 struct mtk_tx_buf *tx_buf; 1324 u32 cpu, dma; 1325 1326 cpu = mtk_r32(eth, MTK_QTX_CRX_PTR); 1327 dma = mtk_r32(eth, MTK_QTX_DRX_PTR); 1328 1329 desc = mtk_qdma_phys_to_virt(ring, cpu); 1330 1331 while ((cpu != dma) && budget) { 1332 u32 next_cpu = desc->txd2; 1333 int mac = 0; 1334 1335 desc = mtk_qdma_phys_to_virt(ring, desc->txd2); 1336 if ((desc->txd3 & TX_DMA_OWNER_CPU) == 0) 1337 break; 1338 1339 tx_buf = mtk_desc_to_tx_buf(ring, desc); 1340 if (tx_buf->flags & MTK_TX_FLAGS_FPORT1) 1341 mac = 1; 1342 1343 skb = tx_buf->skb; 1344 if (!skb) 1345 break; 1346 1347 if (skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC) { 1348 bytes[mac] += skb->len; 1349 done[mac]++; 1350 budget--; 1351 } 1352 mtk_tx_unmap(eth, tx_buf); 1353 1354 ring->last_free = desc; 1355 atomic_inc(&ring->free_count); 1356 1357 cpu = next_cpu; 1358 } 1359 1360 mtk_w32(eth, cpu, MTK_QTX_CRX_PTR); 1361 1362 return budget; 1363 } 1364 1365 static int mtk_poll_tx_pdma(struct mtk_eth *eth, int budget, 1366 unsigned int *done, unsigned int *bytes) 1367 { 1368 struct mtk_tx_ring *ring = ð->tx_ring; 1369 struct mtk_tx_dma *desc; 1370 struct sk_buff *skb; 1371 struct mtk_tx_buf *tx_buf; 1372 u32 cpu, dma; 1373 1374 cpu = ring->cpu_idx; 1375 dma = mtk_r32(eth, MT7628_TX_DTX_IDX0); 1376 1377 while ((cpu != dma) && budget) { 1378 tx_buf = &ring->buf[cpu]; 1379 skb = tx_buf->skb; 1380 if (!skb) 1381 break; 1382 1383 if (skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC) { 1384 bytes[0] += skb->len; 1385 done[0]++; 1386 budget--; 1387 } 1388 1389 mtk_tx_unmap(eth, tx_buf); 1390 1391 desc = &ring->dma[cpu]; 1392 ring->last_free = desc; 1393 atomic_inc(&ring->free_count); 1394 1395 cpu = NEXT_DESP_IDX(cpu, ring->dma_size); 1396 } 1397 1398 ring->cpu_idx = cpu; 1399 1400 return budget; 1401 } 1402 1403 static int mtk_poll_tx(struct mtk_eth *eth, int budget) 1404 { 1405 struct mtk_tx_ring *ring = ð->tx_ring; 1406 unsigned int done[MTK_MAX_DEVS]; 1407 unsigned int bytes[MTK_MAX_DEVS]; 1408 int total = 0, i; 1409 1410 memset(done, 0, sizeof(done)); 1411 memset(bytes, 0, sizeof(bytes)); 1412 1413 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 1414 budget = mtk_poll_tx_qdma(eth, budget, done, bytes); 1415 else 1416 budget = mtk_poll_tx_pdma(eth, budget, done, bytes); 1417 1418 for (i = 0; i < MTK_MAC_COUNT; i++) { 1419 if (!eth->netdev[i] || !done[i]) 1420 continue; 1421 netdev_completed_queue(eth->netdev[i], done[i], bytes[i]); 1422 total += done[i]; 1423 } 1424 1425 if (mtk_queue_stopped(eth) && 1426 (atomic_read(&ring->free_count) > ring->thresh)) 1427 mtk_wake_queue(eth); 1428 1429 return total; 1430 } 1431 1432 static void mtk_handle_status_irq(struct mtk_eth *eth) 1433 { 1434 u32 status2 = mtk_r32(eth, MTK_INT_STATUS2); 1435 1436 if (unlikely(status2 & (MTK_GDM1_AF | MTK_GDM2_AF))) { 1437 mtk_stats_update(eth); 1438 mtk_w32(eth, (MTK_GDM1_AF | MTK_GDM2_AF), 1439 MTK_INT_STATUS2); 1440 } 1441 } 1442 1443 static int mtk_napi_tx(struct napi_struct *napi, int budget) 1444 { 1445 struct mtk_eth *eth = container_of(napi, struct mtk_eth, tx_napi); 1446 u32 status, mask; 1447 int tx_done = 0; 1448 1449 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 1450 mtk_handle_status_irq(eth); 1451 mtk_w32(eth, MTK_TX_DONE_INT, eth->tx_int_status_reg); 1452 tx_done = mtk_poll_tx(eth, budget); 1453 1454 if (unlikely(netif_msg_intr(eth))) { 1455 status = mtk_r32(eth, eth->tx_int_status_reg); 1456 mask = mtk_r32(eth, eth->tx_int_mask_reg); 1457 dev_info(eth->dev, 1458 "done tx %d, intr 0x%08x/0x%x\n", 1459 tx_done, status, mask); 1460 } 1461 1462 if (tx_done == budget) 1463 return budget; 1464 1465 status = mtk_r32(eth, eth->tx_int_status_reg); 1466 if (status & MTK_TX_DONE_INT) 1467 return budget; 1468 1469 napi_complete(napi); 1470 mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); 1471 1472 return tx_done; 1473 } 1474 1475 static int mtk_napi_rx(struct napi_struct *napi, int budget) 1476 { 1477 struct mtk_eth *eth = container_of(napi, struct mtk_eth, rx_napi); 1478 u32 status, mask; 1479 int rx_done = 0; 1480 int remain_budget = budget; 1481 1482 mtk_handle_status_irq(eth); 1483 1484 poll_again: 1485 mtk_w32(eth, MTK_RX_DONE_INT, MTK_PDMA_INT_STATUS); 1486 rx_done = mtk_poll_rx(napi, remain_budget, eth); 1487 1488 if (unlikely(netif_msg_intr(eth))) { 1489 status = mtk_r32(eth, MTK_PDMA_INT_STATUS); 1490 mask = mtk_r32(eth, MTK_PDMA_INT_MASK); 1491 dev_info(eth->dev, 1492 "done rx %d, intr 0x%08x/0x%x\n", 1493 rx_done, status, mask); 1494 } 1495 if (rx_done == remain_budget) 1496 return budget; 1497 1498 status = mtk_r32(eth, MTK_PDMA_INT_STATUS); 1499 if (status & MTK_RX_DONE_INT) { 1500 remain_budget -= rx_done; 1501 goto poll_again; 1502 } 1503 napi_complete(napi); 1504 mtk_rx_irq_enable(eth, MTK_RX_DONE_INT); 1505 1506 return rx_done + budget - remain_budget; 1507 } 1508 1509 static int mtk_tx_alloc(struct mtk_eth *eth) 1510 { 1511 struct mtk_tx_ring *ring = ð->tx_ring; 1512 int i, sz = sizeof(*ring->dma); 1513 1514 ring->buf = kcalloc(MTK_DMA_SIZE, sizeof(*ring->buf), 1515 GFP_KERNEL); 1516 if (!ring->buf) 1517 goto no_tx_mem; 1518 1519 ring->dma = dma_alloc_coherent(eth->dev, MTK_DMA_SIZE * sz, 1520 &ring->phys, GFP_ATOMIC); 1521 if (!ring->dma) 1522 goto no_tx_mem; 1523 1524 for (i = 0; i < MTK_DMA_SIZE; i++) { 1525 int next = (i + 1) % MTK_DMA_SIZE; 1526 u32 next_ptr = ring->phys + next * sz; 1527 1528 ring->dma[i].txd2 = next_ptr; 1529 ring->dma[i].txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU; 1530 } 1531 1532 /* On MT7688 (PDMA only) this driver uses the ring->dma structs 1533 * only as the framework. The real HW descriptors are the PDMA 1534 * descriptors in ring->dma_pdma. 1535 */ 1536 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 1537 ring->dma_pdma = dma_alloc_coherent(eth->dev, MTK_DMA_SIZE * sz, 1538 &ring->phys_pdma, 1539 GFP_ATOMIC); 1540 if (!ring->dma_pdma) 1541 goto no_tx_mem; 1542 1543 for (i = 0; i < MTK_DMA_SIZE; i++) { 1544 ring->dma_pdma[i].txd2 = TX_DMA_DESP2_DEF; 1545 ring->dma_pdma[i].txd4 = 0; 1546 } 1547 } 1548 1549 ring->dma_size = MTK_DMA_SIZE; 1550 atomic_set(&ring->free_count, MTK_DMA_SIZE - 2); 1551 ring->next_free = &ring->dma[0]; 1552 ring->last_free = &ring->dma[MTK_DMA_SIZE - 1]; 1553 ring->thresh = MAX_SKB_FRAGS; 1554 1555 /* make sure that all changes to the dma ring are flushed before we 1556 * continue 1557 */ 1558 wmb(); 1559 1560 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 1561 mtk_w32(eth, ring->phys, MTK_QTX_CTX_PTR); 1562 mtk_w32(eth, ring->phys, MTK_QTX_DTX_PTR); 1563 mtk_w32(eth, 1564 ring->phys + ((MTK_DMA_SIZE - 1) * sz), 1565 MTK_QTX_CRX_PTR); 1566 mtk_w32(eth, 1567 ring->phys + ((MTK_DMA_SIZE - 1) * sz), 1568 MTK_QTX_DRX_PTR); 1569 mtk_w32(eth, (QDMA_RES_THRES << 8) | QDMA_RES_THRES, 1570 MTK_QTX_CFG(0)); 1571 } else { 1572 mtk_w32(eth, ring->phys_pdma, MT7628_TX_BASE_PTR0); 1573 mtk_w32(eth, MTK_DMA_SIZE, MT7628_TX_MAX_CNT0); 1574 mtk_w32(eth, 0, MT7628_TX_CTX_IDX0); 1575 mtk_w32(eth, MT7628_PST_DTX_IDX0, MTK_PDMA_RST_IDX); 1576 } 1577 1578 return 0; 1579 1580 no_tx_mem: 1581 return -ENOMEM; 1582 } 1583 1584 static void mtk_tx_clean(struct mtk_eth *eth) 1585 { 1586 struct mtk_tx_ring *ring = ð->tx_ring; 1587 int i; 1588 1589 if (ring->buf) { 1590 for (i = 0; i < MTK_DMA_SIZE; i++) 1591 mtk_tx_unmap(eth, &ring->buf[i]); 1592 kfree(ring->buf); 1593 ring->buf = NULL; 1594 } 1595 1596 if (ring->dma) { 1597 dma_free_coherent(eth->dev, 1598 MTK_DMA_SIZE * sizeof(*ring->dma), 1599 ring->dma, 1600 ring->phys); 1601 ring->dma = NULL; 1602 } 1603 1604 if (ring->dma_pdma) { 1605 dma_free_coherent(eth->dev, 1606 MTK_DMA_SIZE * sizeof(*ring->dma_pdma), 1607 ring->dma_pdma, 1608 ring->phys_pdma); 1609 ring->dma_pdma = NULL; 1610 } 1611 } 1612 1613 static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag) 1614 { 1615 struct mtk_rx_ring *ring; 1616 int rx_data_len, rx_dma_size; 1617 int i; 1618 u32 offset = 0; 1619 1620 if (rx_flag == MTK_RX_FLAGS_QDMA) { 1621 if (ring_no) 1622 return -EINVAL; 1623 ring = ð->rx_ring_qdma; 1624 offset = 0x1000; 1625 } else { 1626 ring = ð->rx_ring[ring_no]; 1627 } 1628 1629 if (rx_flag == MTK_RX_FLAGS_HWLRO) { 1630 rx_data_len = MTK_MAX_LRO_RX_LENGTH; 1631 rx_dma_size = MTK_HW_LRO_DMA_SIZE; 1632 } else { 1633 rx_data_len = ETH_DATA_LEN; 1634 rx_dma_size = MTK_DMA_SIZE; 1635 } 1636 1637 ring->frag_size = mtk_max_frag_size(rx_data_len); 1638 ring->buf_size = mtk_max_buf_size(ring->frag_size); 1639 ring->data = kcalloc(rx_dma_size, sizeof(*ring->data), 1640 GFP_KERNEL); 1641 if (!ring->data) 1642 return -ENOMEM; 1643 1644 for (i = 0; i < rx_dma_size; i++) { 1645 ring->data[i] = netdev_alloc_frag(ring->frag_size); 1646 if (!ring->data[i]) 1647 return -ENOMEM; 1648 } 1649 1650 ring->dma = dma_alloc_coherent(eth->dev, 1651 rx_dma_size * sizeof(*ring->dma), 1652 &ring->phys, GFP_ATOMIC); 1653 if (!ring->dma) 1654 return -ENOMEM; 1655 1656 for (i = 0; i < rx_dma_size; i++) { 1657 dma_addr_t dma_addr = dma_map_single(eth->dev, 1658 ring->data[i] + NET_SKB_PAD + eth->ip_align, 1659 ring->buf_size, 1660 DMA_FROM_DEVICE); 1661 if (unlikely(dma_mapping_error(eth->dev, dma_addr))) 1662 return -ENOMEM; 1663 ring->dma[i].rxd1 = (unsigned int)dma_addr; 1664 1665 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) 1666 ring->dma[i].rxd2 = RX_DMA_LSO; 1667 else 1668 ring->dma[i].rxd2 = RX_DMA_PLEN0(ring->buf_size); 1669 } 1670 ring->dma_size = rx_dma_size; 1671 ring->calc_idx_update = false; 1672 ring->calc_idx = rx_dma_size - 1; 1673 ring->crx_idx_reg = MTK_PRX_CRX_IDX_CFG(ring_no); 1674 /* make sure that all changes to the dma ring are flushed before we 1675 * continue 1676 */ 1677 wmb(); 1678 1679 mtk_w32(eth, ring->phys, MTK_PRX_BASE_PTR_CFG(ring_no) + offset); 1680 mtk_w32(eth, rx_dma_size, MTK_PRX_MAX_CNT_CFG(ring_no) + offset); 1681 mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg + offset); 1682 mtk_w32(eth, MTK_PST_DRX_IDX_CFG(ring_no), MTK_PDMA_RST_IDX + offset); 1683 1684 return 0; 1685 } 1686 1687 static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring) 1688 { 1689 int i; 1690 1691 if (ring->data && ring->dma) { 1692 for (i = 0; i < ring->dma_size; i++) { 1693 if (!ring->data[i]) 1694 continue; 1695 if (!ring->dma[i].rxd1) 1696 continue; 1697 dma_unmap_single(eth->dev, 1698 ring->dma[i].rxd1, 1699 ring->buf_size, 1700 DMA_FROM_DEVICE); 1701 skb_free_frag(ring->data[i]); 1702 } 1703 kfree(ring->data); 1704 ring->data = NULL; 1705 } 1706 1707 if (ring->dma) { 1708 dma_free_coherent(eth->dev, 1709 ring->dma_size * sizeof(*ring->dma), 1710 ring->dma, 1711 ring->phys); 1712 ring->dma = NULL; 1713 } 1714 } 1715 1716 static int mtk_hwlro_rx_init(struct mtk_eth *eth) 1717 { 1718 int i; 1719 u32 ring_ctrl_dw1 = 0, ring_ctrl_dw2 = 0, ring_ctrl_dw3 = 0; 1720 u32 lro_ctrl_dw0 = 0, lro_ctrl_dw3 = 0; 1721 1722 /* set LRO rings to auto-learn modes */ 1723 ring_ctrl_dw2 |= MTK_RING_AUTO_LERAN_MODE; 1724 1725 /* validate LRO ring */ 1726 ring_ctrl_dw2 |= MTK_RING_VLD; 1727 1728 /* set AGE timer (unit: 20us) */ 1729 ring_ctrl_dw2 |= MTK_RING_AGE_TIME_H; 1730 ring_ctrl_dw1 |= MTK_RING_AGE_TIME_L; 1731 1732 /* set max AGG timer (unit: 20us) */ 1733 ring_ctrl_dw2 |= MTK_RING_MAX_AGG_TIME; 1734 1735 /* set max LRO AGG count */ 1736 ring_ctrl_dw2 |= MTK_RING_MAX_AGG_CNT_L; 1737 ring_ctrl_dw3 |= MTK_RING_MAX_AGG_CNT_H; 1738 1739 for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) { 1740 mtk_w32(eth, ring_ctrl_dw1, MTK_LRO_CTRL_DW1_CFG(i)); 1741 mtk_w32(eth, ring_ctrl_dw2, MTK_LRO_CTRL_DW2_CFG(i)); 1742 mtk_w32(eth, ring_ctrl_dw3, MTK_LRO_CTRL_DW3_CFG(i)); 1743 } 1744 1745 /* IPv4 checksum update enable */ 1746 lro_ctrl_dw0 |= MTK_L3_CKS_UPD_EN; 1747 1748 /* switch priority comparison to packet count mode */ 1749 lro_ctrl_dw0 |= MTK_LRO_ALT_PKT_CNT_MODE; 1750 1751 /* bandwidth threshold setting */ 1752 mtk_w32(eth, MTK_HW_LRO_BW_THRE, MTK_PDMA_LRO_CTRL_DW2); 1753 1754 /* auto-learn score delta setting */ 1755 mtk_w32(eth, MTK_HW_LRO_REPLACE_DELTA, MTK_PDMA_LRO_ALT_SCORE_DELTA); 1756 1757 /* set refresh timer for altering flows to 1 sec. (unit: 20us) */ 1758 mtk_w32(eth, (MTK_HW_LRO_TIMER_UNIT << 16) | MTK_HW_LRO_REFRESH_TIME, 1759 MTK_PDMA_LRO_ALT_REFRESH_TIMER); 1760 1761 /* set HW LRO mode & the max aggregation count for rx packets */ 1762 lro_ctrl_dw3 |= MTK_ADMA_MODE | (MTK_HW_LRO_MAX_AGG_CNT & 0xff); 1763 1764 /* the minimal remaining room of SDL0 in RXD for lro aggregation */ 1765 lro_ctrl_dw3 |= MTK_LRO_MIN_RXD_SDL; 1766 1767 /* enable HW LRO */ 1768 lro_ctrl_dw0 |= MTK_LRO_EN; 1769 1770 mtk_w32(eth, lro_ctrl_dw3, MTK_PDMA_LRO_CTRL_DW3); 1771 mtk_w32(eth, lro_ctrl_dw0, MTK_PDMA_LRO_CTRL_DW0); 1772 1773 return 0; 1774 } 1775 1776 static void mtk_hwlro_rx_uninit(struct mtk_eth *eth) 1777 { 1778 int i; 1779 u32 val; 1780 1781 /* relinquish lro rings, flush aggregated packets */ 1782 mtk_w32(eth, MTK_LRO_RING_RELINQUISH_REQ, MTK_PDMA_LRO_CTRL_DW0); 1783 1784 /* wait for relinquishments done */ 1785 for (i = 0; i < 10; i++) { 1786 val = mtk_r32(eth, MTK_PDMA_LRO_CTRL_DW0); 1787 if (val & MTK_LRO_RING_RELINQUISH_DONE) { 1788 msleep(20); 1789 continue; 1790 } 1791 break; 1792 } 1793 1794 /* invalidate lro rings */ 1795 for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) 1796 mtk_w32(eth, 0, MTK_LRO_CTRL_DW2_CFG(i)); 1797 1798 /* disable HW LRO */ 1799 mtk_w32(eth, 0, MTK_PDMA_LRO_CTRL_DW0); 1800 } 1801 1802 static void mtk_hwlro_val_ipaddr(struct mtk_eth *eth, int idx, __be32 ip) 1803 { 1804 u32 reg_val; 1805 1806 reg_val = mtk_r32(eth, MTK_LRO_CTRL_DW2_CFG(idx)); 1807 1808 /* invalidate the IP setting */ 1809 mtk_w32(eth, (reg_val & ~MTK_RING_MYIP_VLD), MTK_LRO_CTRL_DW2_CFG(idx)); 1810 1811 mtk_w32(eth, ip, MTK_LRO_DIP_DW0_CFG(idx)); 1812 1813 /* validate the IP setting */ 1814 mtk_w32(eth, (reg_val | MTK_RING_MYIP_VLD), MTK_LRO_CTRL_DW2_CFG(idx)); 1815 } 1816 1817 static void mtk_hwlro_inval_ipaddr(struct mtk_eth *eth, int idx) 1818 { 1819 u32 reg_val; 1820 1821 reg_val = mtk_r32(eth, MTK_LRO_CTRL_DW2_CFG(idx)); 1822 1823 /* invalidate the IP setting */ 1824 mtk_w32(eth, (reg_val & ~MTK_RING_MYIP_VLD), MTK_LRO_CTRL_DW2_CFG(idx)); 1825 1826 mtk_w32(eth, 0, MTK_LRO_DIP_DW0_CFG(idx)); 1827 } 1828 1829 static int mtk_hwlro_get_ip_cnt(struct mtk_mac *mac) 1830 { 1831 int cnt = 0; 1832 int i; 1833 1834 for (i = 0; i < MTK_MAX_LRO_IP_CNT; i++) { 1835 if (mac->hwlro_ip[i]) 1836 cnt++; 1837 } 1838 1839 return cnt; 1840 } 1841 1842 static int mtk_hwlro_add_ipaddr(struct net_device *dev, 1843 struct ethtool_rxnfc *cmd) 1844 { 1845 struct ethtool_rx_flow_spec *fsp = 1846 (struct ethtool_rx_flow_spec *)&cmd->fs; 1847 struct mtk_mac *mac = netdev_priv(dev); 1848 struct mtk_eth *eth = mac->hw; 1849 int hwlro_idx; 1850 1851 if ((fsp->flow_type != TCP_V4_FLOW) || 1852 (!fsp->h_u.tcp_ip4_spec.ip4dst) || 1853 (fsp->location > 1)) 1854 return -EINVAL; 1855 1856 mac->hwlro_ip[fsp->location] = htonl(fsp->h_u.tcp_ip4_spec.ip4dst); 1857 hwlro_idx = (mac->id * MTK_MAX_LRO_IP_CNT) + fsp->location; 1858 1859 mac->hwlro_ip_cnt = mtk_hwlro_get_ip_cnt(mac); 1860 1861 mtk_hwlro_val_ipaddr(eth, hwlro_idx, mac->hwlro_ip[fsp->location]); 1862 1863 return 0; 1864 } 1865 1866 static int mtk_hwlro_del_ipaddr(struct net_device *dev, 1867 struct ethtool_rxnfc *cmd) 1868 { 1869 struct ethtool_rx_flow_spec *fsp = 1870 (struct ethtool_rx_flow_spec *)&cmd->fs; 1871 struct mtk_mac *mac = netdev_priv(dev); 1872 struct mtk_eth *eth = mac->hw; 1873 int hwlro_idx; 1874 1875 if (fsp->location > 1) 1876 return -EINVAL; 1877 1878 mac->hwlro_ip[fsp->location] = 0; 1879 hwlro_idx = (mac->id * MTK_MAX_LRO_IP_CNT) + fsp->location; 1880 1881 mac->hwlro_ip_cnt = mtk_hwlro_get_ip_cnt(mac); 1882 1883 mtk_hwlro_inval_ipaddr(eth, hwlro_idx); 1884 1885 return 0; 1886 } 1887 1888 static void mtk_hwlro_netdev_disable(struct net_device *dev) 1889 { 1890 struct mtk_mac *mac = netdev_priv(dev); 1891 struct mtk_eth *eth = mac->hw; 1892 int i, hwlro_idx; 1893 1894 for (i = 0; i < MTK_MAX_LRO_IP_CNT; i++) { 1895 mac->hwlro_ip[i] = 0; 1896 hwlro_idx = (mac->id * MTK_MAX_LRO_IP_CNT) + i; 1897 1898 mtk_hwlro_inval_ipaddr(eth, hwlro_idx); 1899 } 1900 1901 mac->hwlro_ip_cnt = 0; 1902 } 1903 1904 static int mtk_hwlro_get_fdir_entry(struct net_device *dev, 1905 struct ethtool_rxnfc *cmd) 1906 { 1907 struct mtk_mac *mac = netdev_priv(dev); 1908 struct ethtool_rx_flow_spec *fsp = 1909 (struct ethtool_rx_flow_spec *)&cmd->fs; 1910 1911 /* only tcp dst ipv4 is meaningful, others are meaningless */ 1912 fsp->flow_type = TCP_V4_FLOW; 1913 fsp->h_u.tcp_ip4_spec.ip4dst = ntohl(mac->hwlro_ip[fsp->location]); 1914 fsp->m_u.tcp_ip4_spec.ip4dst = 0; 1915 1916 fsp->h_u.tcp_ip4_spec.ip4src = 0; 1917 fsp->m_u.tcp_ip4_spec.ip4src = 0xffffffff; 1918 fsp->h_u.tcp_ip4_spec.psrc = 0; 1919 fsp->m_u.tcp_ip4_spec.psrc = 0xffff; 1920 fsp->h_u.tcp_ip4_spec.pdst = 0; 1921 fsp->m_u.tcp_ip4_spec.pdst = 0xffff; 1922 fsp->h_u.tcp_ip4_spec.tos = 0; 1923 fsp->m_u.tcp_ip4_spec.tos = 0xff; 1924 1925 return 0; 1926 } 1927 1928 static int mtk_hwlro_get_fdir_all(struct net_device *dev, 1929 struct ethtool_rxnfc *cmd, 1930 u32 *rule_locs) 1931 { 1932 struct mtk_mac *mac = netdev_priv(dev); 1933 int cnt = 0; 1934 int i; 1935 1936 for (i = 0; i < MTK_MAX_LRO_IP_CNT; i++) { 1937 if (mac->hwlro_ip[i]) { 1938 rule_locs[cnt] = i; 1939 cnt++; 1940 } 1941 } 1942 1943 cmd->rule_cnt = cnt; 1944 1945 return 0; 1946 } 1947 1948 static netdev_features_t mtk_fix_features(struct net_device *dev, 1949 netdev_features_t features) 1950 { 1951 if (!(features & NETIF_F_LRO)) { 1952 struct mtk_mac *mac = netdev_priv(dev); 1953 int ip_cnt = mtk_hwlro_get_ip_cnt(mac); 1954 1955 if (ip_cnt) { 1956 netdev_info(dev, "RX flow is programmed, LRO should keep on\n"); 1957 1958 features |= NETIF_F_LRO; 1959 } 1960 } 1961 1962 return features; 1963 } 1964 1965 static int mtk_set_features(struct net_device *dev, netdev_features_t features) 1966 { 1967 int err = 0; 1968 1969 if (!((dev->features ^ features) & NETIF_F_LRO)) 1970 return 0; 1971 1972 if (!(features & NETIF_F_LRO)) 1973 mtk_hwlro_netdev_disable(dev); 1974 1975 return err; 1976 } 1977 1978 /* wait for DMA to finish whatever it is doing before we start using it again */ 1979 static int mtk_dma_busy_wait(struct mtk_eth *eth) 1980 { 1981 unsigned long t_start = jiffies; 1982 1983 while (1) { 1984 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 1985 if (!(mtk_r32(eth, MTK_QDMA_GLO_CFG) & 1986 (MTK_RX_DMA_BUSY | MTK_TX_DMA_BUSY))) 1987 return 0; 1988 } else { 1989 if (!(mtk_r32(eth, MTK_PDMA_GLO_CFG) & 1990 (MTK_RX_DMA_BUSY | MTK_TX_DMA_BUSY))) 1991 return 0; 1992 } 1993 1994 if (time_after(jiffies, t_start + MTK_DMA_BUSY_TIMEOUT)) 1995 break; 1996 } 1997 1998 dev_err(eth->dev, "DMA init timeout\n"); 1999 return -1; 2000 } 2001 2002 static int mtk_dma_init(struct mtk_eth *eth) 2003 { 2004 int err; 2005 u32 i; 2006 2007 if (mtk_dma_busy_wait(eth)) 2008 return -EBUSY; 2009 2010 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 2011 /* QDMA needs scratch memory for internal reordering of the 2012 * descriptors 2013 */ 2014 err = mtk_init_fq_dma(eth); 2015 if (err) 2016 return err; 2017 } 2018 2019 err = mtk_tx_alloc(eth); 2020 if (err) 2021 return err; 2022 2023 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 2024 err = mtk_rx_alloc(eth, 0, MTK_RX_FLAGS_QDMA); 2025 if (err) 2026 return err; 2027 } 2028 2029 err = mtk_rx_alloc(eth, 0, MTK_RX_FLAGS_NORMAL); 2030 if (err) 2031 return err; 2032 2033 if (eth->hwlro) { 2034 for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) { 2035 err = mtk_rx_alloc(eth, i, MTK_RX_FLAGS_HWLRO); 2036 if (err) 2037 return err; 2038 } 2039 err = mtk_hwlro_rx_init(eth); 2040 if (err) 2041 return err; 2042 } 2043 2044 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 2045 /* Enable random early drop and set drop threshold 2046 * automatically 2047 */ 2048 mtk_w32(eth, FC_THRES_DROP_MODE | FC_THRES_DROP_EN | 2049 FC_THRES_MIN, MTK_QDMA_FC_THRES); 2050 mtk_w32(eth, 0x0, MTK_QDMA_HRED2); 2051 } 2052 2053 return 0; 2054 } 2055 2056 static void mtk_dma_free(struct mtk_eth *eth) 2057 { 2058 int i; 2059 2060 for (i = 0; i < MTK_MAC_COUNT; i++) 2061 if (eth->netdev[i]) 2062 netdev_reset_queue(eth->netdev[i]); 2063 if (eth->scratch_ring) { 2064 dma_free_coherent(eth->dev, 2065 MTK_DMA_SIZE * sizeof(struct mtk_tx_dma), 2066 eth->scratch_ring, 2067 eth->phy_scratch_ring); 2068 eth->scratch_ring = NULL; 2069 eth->phy_scratch_ring = 0; 2070 } 2071 mtk_tx_clean(eth); 2072 mtk_rx_clean(eth, ð->rx_ring[0]); 2073 mtk_rx_clean(eth, ð->rx_ring_qdma); 2074 2075 if (eth->hwlro) { 2076 mtk_hwlro_rx_uninit(eth); 2077 for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) 2078 mtk_rx_clean(eth, ð->rx_ring[i]); 2079 } 2080 2081 kfree(eth->scratch_head); 2082 } 2083 2084 static void mtk_tx_timeout(struct net_device *dev) 2085 { 2086 struct mtk_mac *mac = netdev_priv(dev); 2087 struct mtk_eth *eth = mac->hw; 2088 2089 eth->netdev[mac->id]->stats.tx_errors++; 2090 netif_err(eth, tx_err, dev, 2091 "transmit timed out\n"); 2092 schedule_work(ð->pending_work); 2093 } 2094 2095 static irqreturn_t mtk_handle_irq_rx(int irq, void *_eth) 2096 { 2097 struct mtk_eth *eth = _eth; 2098 2099 if (likely(napi_schedule_prep(ð->rx_napi))) { 2100 __napi_schedule(ð->rx_napi); 2101 mtk_rx_irq_disable(eth, MTK_RX_DONE_INT); 2102 } 2103 2104 return IRQ_HANDLED; 2105 } 2106 2107 static irqreturn_t mtk_handle_irq_tx(int irq, void *_eth) 2108 { 2109 struct mtk_eth *eth = _eth; 2110 2111 if (likely(napi_schedule_prep(ð->tx_napi))) { 2112 __napi_schedule(ð->tx_napi); 2113 mtk_tx_irq_disable(eth, MTK_TX_DONE_INT); 2114 } 2115 2116 return IRQ_HANDLED; 2117 } 2118 2119 static irqreturn_t mtk_handle_irq(int irq, void *_eth) 2120 { 2121 struct mtk_eth *eth = _eth; 2122 2123 if (mtk_r32(eth, MTK_PDMA_INT_MASK) & MTK_RX_DONE_INT) { 2124 if (mtk_r32(eth, MTK_PDMA_INT_STATUS) & MTK_RX_DONE_INT) 2125 mtk_handle_irq_rx(irq, _eth); 2126 } 2127 if (mtk_r32(eth, eth->tx_int_mask_reg) & MTK_TX_DONE_INT) { 2128 if (mtk_r32(eth, eth->tx_int_status_reg) & MTK_TX_DONE_INT) 2129 mtk_handle_irq_tx(irq, _eth); 2130 } 2131 2132 return IRQ_HANDLED; 2133 } 2134 2135 #ifdef CONFIG_NET_POLL_CONTROLLER 2136 static void mtk_poll_controller(struct net_device *dev) 2137 { 2138 struct mtk_mac *mac = netdev_priv(dev); 2139 struct mtk_eth *eth = mac->hw; 2140 2141 mtk_tx_irq_disable(eth, MTK_TX_DONE_INT); 2142 mtk_rx_irq_disable(eth, MTK_RX_DONE_INT); 2143 mtk_handle_irq_rx(eth->irq[2], dev); 2144 mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); 2145 mtk_rx_irq_enable(eth, MTK_RX_DONE_INT); 2146 } 2147 #endif 2148 2149 static int mtk_start_dma(struct mtk_eth *eth) 2150 { 2151 u32 rx_2b_offset = (NET_IP_ALIGN == 2) ? MTK_RX_2B_OFFSET : 0; 2152 int err; 2153 2154 err = mtk_dma_init(eth); 2155 if (err) { 2156 mtk_dma_free(eth); 2157 return err; 2158 } 2159 2160 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 2161 mtk_w32(eth, 2162 MTK_TX_WB_DDONE | MTK_TX_DMA_EN | 2163 MTK_DMA_SIZE_16DWORDS | MTK_NDP_CO_PRO | 2164 MTK_RX_DMA_EN | MTK_RX_2B_OFFSET | 2165 MTK_RX_BT_32DWORDS, 2166 MTK_QDMA_GLO_CFG); 2167 2168 mtk_w32(eth, 2169 MTK_RX_DMA_EN | rx_2b_offset | 2170 MTK_RX_BT_32DWORDS | MTK_MULTI_EN, 2171 MTK_PDMA_GLO_CFG); 2172 } else { 2173 mtk_w32(eth, MTK_TX_WB_DDONE | MTK_TX_DMA_EN | MTK_RX_DMA_EN | 2174 MTK_MULTI_EN | MTK_PDMA_SIZE_8DWORDS, 2175 MTK_PDMA_GLO_CFG); 2176 } 2177 2178 return 0; 2179 } 2180 2181 static void mtk_gdm_config(struct mtk_eth *eth, u32 config) 2182 { 2183 int i; 2184 2185 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) 2186 return; 2187 2188 for (i = 0; i < MTK_MAC_COUNT; i++) { 2189 u32 val = mtk_r32(eth, MTK_GDMA_FWD_CFG(i)); 2190 2191 /* default setup the forward port to send frame to PDMA */ 2192 val &= ~0xffff; 2193 2194 /* Enable RX checksum */ 2195 val |= MTK_GDMA_ICS_EN | MTK_GDMA_TCS_EN | MTK_GDMA_UCS_EN; 2196 2197 val |= config; 2198 2199 mtk_w32(eth, val, MTK_GDMA_FWD_CFG(i)); 2200 } 2201 /* Reset and enable PSE */ 2202 mtk_w32(eth, RST_GL_PSE, MTK_RST_GL); 2203 mtk_w32(eth, 0, MTK_RST_GL); 2204 } 2205 2206 static int mtk_open(struct net_device *dev) 2207 { 2208 struct mtk_mac *mac = netdev_priv(dev); 2209 struct mtk_eth *eth = mac->hw; 2210 int err; 2211 2212 err = phylink_of_phy_connect(mac->phylink, mac->of_node, 0); 2213 if (err) { 2214 netdev_err(dev, "%s: could not attach PHY: %d\n", __func__, 2215 err); 2216 return err; 2217 } 2218 2219 /* we run 2 netdevs on the same dma ring so we only bring it up once */ 2220 if (!refcount_read(ð->dma_refcnt)) { 2221 int err = mtk_start_dma(eth); 2222 2223 if (err) 2224 return err; 2225 2226 mtk_gdm_config(eth, MTK_GDMA_TO_PDMA); 2227 2228 napi_enable(ð->tx_napi); 2229 napi_enable(ð->rx_napi); 2230 mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); 2231 mtk_rx_irq_enable(eth, MTK_RX_DONE_INT); 2232 refcount_set(ð->dma_refcnt, 1); 2233 } 2234 else 2235 refcount_inc(ð->dma_refcnt); 2236 2237 phylink_start(mac->phylink); 2238 netif_start_queue(dev); 2239 return 0; 2240 } 2241 2242 static void mtk_stop_dma(struct mtk_eth *eth, u32 glo_cfg) 2243 { 2244 u32 val; 2245 int i; 2246 2247 /* stop the dma engine */ 2248 spin_lock_bh(ð->page_lock); 2249 val = mtk_r32(eth, glo_cfg); 2250 mtk_w32(eth, val & ~(MTK_TX_WB_DDONE | MTK_RX_DMA_EN | MTK_TX_DMA_EN), 2251 glo_cfg); 2252 spin_unlock_bh(ð->page_lock); 2253 2254 /* wait for dma stop */ 2255 for (i = 0; i < 10; i++) { 2256 val = mtk_r32(eth, glo_cfg); 2257 if (val & (MTK_TX_DMA_BUSY | MTK_RX_DMA_BUSY)) { 2258 msleep(20); 2259 continue; 2260 } 2261 break; 2262 } 2263 } 2264 2265 static int mtk_stop(struct net_device *dev) 2266 { 2267 struct mtk_mac *mac = netdev_priv(dev); 2268 struct mtk_eth *eth = mac->hw; 2269 2270 phylink_stop(mac->phylink); 2271 2272 netif_tx_disable(dev); 2273 2274 phylink_disconnect_phy(mac->phylink); 2275 2276 /* only shutdown DMA if this is the last user */ 2277 if (!refcount_dec_and_test(ð->dma_refcnt)) 2278 return 0; 2279 2280 mtk_gdm_config(eth, MTK_GDMA_DROP_ALL); 2281 2282 mtk_tx_irq_disable(eth, MTK_TX_DONE_INT); 2283 mtk_rx_irq_disable(eth, MTK_RX_DONE_INT); 2284 napi_disable(ð->tx_napi); 2285 napi_disable(ð->rx_napi); 2286 2287 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 2288 mtk_stop_dma(eth, MTK_QDMA_GLO_CFG); 2289 mtk_stop_dma(eth, MTK_PDMA_GLO_CFG); 2290 2291 mtk_dma_free(eth); 2292 2293 return 0; 2294 } 2295 2296 static void ethsys_reset(struct mtk_eth *eth, u32 reset_bits) 2297 { 2298 regmap_update_bits(eth->ethsys, ETHSYS_RSTCTRL, 2299 reset_bits, 2300 reset_bits); 2301 2302 usleep_range(1000, 1100); 2303 regmap_update_bits(eth->ethsys, ETHSYS_RSTCTRL, 2304 reset_bits, 2305 ~reset_bits); 2306 mdelay(10); 2307 } 2308 2309 static void mtk_clk_disable(struct mtk_eth *eth) 2310 { 2311 int clk; 2312 2313 for (clk = MTK_CLK_MAX - 1; clk >= 0; clk--) 2314 clk_disable_unprepare(eth->clks[clk]); 2315 } 2316 2317 static int mtk_clk_enable(struct mtk_eth *eth) 2318 { 2319 int clk, ret; 2320 2321 for (clk = 0; clk < MTK_CLK_MAX ; clk++) { 2322 ret = clk_prepare_enable(eth->clks[clk]); 2323 if (ret) 2324 goto err_disable_clks; 2325 } 2326 2327 return 0; 2328 2329 err_disable_clks: 2330 while (--clk >= 0) 2331 clk_disable_unprepare(eth->clks[clk]); 2332 2333 return ret; 2334 } 2335 2336 static int mtk_hw_init(struct mtk_eth *eth) 2337 { 2338 int i, val, ret; 2339 2340 if (test_and_set_bit(MTK_HW_INIT, ð->state)) 2341 return 0; 2342 2343 pm_runtime_enable(eth->dev); 2344 pm_runtime_get_sync(eth->dev); 2345 2346 ret = mtk_clk_enable(eth); 2347 if (ret) 2348 goto err_disable_pm; 2349 2350 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 2351 ret = device_reset(eth->dev); 2352 if (ret) { 2353 dev_err(eth->dev, "MAC reset failed!\n"); 2354 goto err_disable_pm; 2355 } 2356 2357 /* enable interrupt delay for RX */ 2358 mtk_w32(eth, MTK_PDMA_DELAY_RX_DELAY, MTK_PDMA_DELAY_INT); 2359 2360 /* disable delay and normal interrupt */ 2361 mtk_tx_irq_disable(eth, ~0); 2362 mtk_rx_irq_disable(eth, ~0); 2363 2364 return 0; 2365 } 2366 2367 /* Non-MT7628 handling... */ 2368 ethsys_reset(eth, RSTCTRL_FE); 2369 ethsys_reset(eth, RSTCTRL_PPE); 2370 2371 if (eth->pctl) { 2372 /* Set GE2 driving and slew rate */ 2373 regmap_write(eth->pctl, GPIO_DRV_SEL10, 0xa00); 2374 2375 /* set GE2 TDSEL */ 2376 regmap_write(eth->pctl, GPIO_OD33_CTRL8, 0x5); 2377 2378 /* set GE2 TUNE */ 2379 regmap_write(eth->pctl, GPIO_BIAS_CTRL, 0x0); 2380 } 2381 2382 /* Set linkdown as the default for each GMAC. Its own MCR would be set 2383 * up with the more appropriate value when mtk_mac_config call is being 2384 * invoked. 2385 */ 2386 for (i = 0; i < MTK_MAC_COUNT; i++) 2387 mtk_w32(eth, MAC_MCR_FORCE_LINK_DOWN, MTK_MAC_MCR(i)); 2388 2389 /* Indicates CDM to parse the MTK special tag from CPU 2390 * which also is working out for untag packets. 2391 */ 2392 val = mtk_r32(eth, MTK_CDMQ_IG_CTRL); 2393 mtk_w32(eth, val | MTK_CDMQ_STAG_EN, MTK_CDMQ_IG_CTRL); 2394 2395 /* Enable RX VLan Offloading */ 2396 mtk_w32(eth, 1, MTK_CDMP_EG_CTRL); 2397 2398 /* enable interrupt delay for RX */ 2399 mtk_w32(eth, MTK_PDMA_DELAY_RX_DELAY, MTK_PDMA_DELAY_INT); 2400 2401 /* disable delay and normal interrupt */ 2402 mtk_w32(eth, 0, MTK_QDMA_DELAY_INT); 2403 mtk_tx_irq_disable(eth, ~0); 2404 mtk_rx_irq_disable(eth, ~0); 2405 2406 /* FE int grouping */ 2407 mtk_w32(eth, MTK_TX_DONE_INT, MTK_PDMA_INT_GRP1); 2408 mtk_w32(eth, MTK_RX_DONE_INT, MTK_PDMA_INT_GRP2); 2409 mtk_w32(eth, MTK_TX_DONE_INT, MTK_QDMA_INT_GRP1); 2410 mtk_w32(eth, MTK_RX_DONE_INT, MTK_QDMA_INT_GRP2); 2411 mtk_w32(eth, 0x21021000, MTK_FE_INT_GRP); 2412 2413 return 0; 2414 2415 err_disable_pm: 2416 pm_runtime_put_sync(eth->dev); 2417 pm_runtime_disable(eth->dev); 2418 2419 return ret; 2420 } 2421 2422 static int mtk_hw_deinit(struct mtk_eth *eth) 2423 { 2424 if (!test_and_clear_bit(MTK_HW_INIT, ð->state)) 2425 return 0; 2426 2427 mtk_clk_disable(eth); 2428 2429 pm_runtime_put_sync(eth->dev); 2430 pm_runtime_disable(eth->dev); 2431 2432 return 0; 2433 } 2434 2435 static int __init mtk_init(struct net_device *dev) 2436 { 2437 struct mtk_mac *mac = netdev_priv(dev); 2438 struct mtk_eth *eth = mac->hw; 2439 const char *mac_addr; 2440 2441 mac_addr = of_get_mac_address(mac->of_node); 2442 if (!IS_ERR(mac_addr)) 2443 ether_addr_copy(dev->dev_addr, mac_addr); 2444 2445 /* If the mac address is invalid, use random mac address */ 2446 if (!is_valid_ether_addr(dev->dev_addr)) { 2447 eth_hw_addr_random(dev); 2448 dev_err(eth->dev, "generated random MAC address %pM\n", 2449 dev->dev_addr); 2450 } 2451 2452 return 0; 2453 } 2454 2455 static void mtk_uninit(struct net_device *dev) 2456 { 2457 struct mtk_mac *mac = netdev_priv(dev); 2458 struct mtk_eth *eth = mac->hw; 2459 2460 phylink_disconnect_phy(mac->phylink); 2461 mtk_tx_irq_disable(eth, ~0); 2462 mtk_rx_irq_disable(eth, ~0); 2463 } 2464 2465 static int mtk_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 2466 { 2467 struct mtk_mac *mac = netdev_priv(dev); 2468 2469 switch (cmd) { 2470 case SIOCGMIIPHY: 2471 case SIOCGMIIREG: 2472 case SIOCSMIIREG: 2473 return phylink_mii_ioctl(mac->phylink, ifr, cmd); 2474 default: 2475 break; 2476 } 2477 2478 return -EOPNOTSUPP; 2479 } 2480 2481 static void mtk_pending_work(struct work_struct *work) 2482 { 2483 struct mtk_eth *eth = container_of(work, struct mtk_eth, pending_work); 2484 int err, i; 2485 unsigned long restart = 0; 2486 2487 rtnl_lock(); 2488 2489 dev_dbg(eth->dev, "[%s][%d] reset\n", __func__, __LINE__); 2490 2491 while (test_and_set_bit_lock(MTK_RESETTING, ð->state)) 2492 cpu_relax(); 2493 2494 dev_dbg(eth->dev, "[%s][%d] mtk_stop starts\n", __func__, __LINE__); 2495 /* stop all devices to make sure that dma is properly shut down */ 2496 for (i = 0; i < MTK_MAC_COUNT; i++) { 2497 if (!eth->netdev[i]) 2498 continue; 2499 mtk_stop(eth->netdev[i]); 2500 __set_bit(i, &restart); 2501 } 2502 dev_dbg(eth->dev, "[%s][%d] mtk_stop ends\n", __func__, __LINE__); 2503 2504 /* restart underlying hardware such as power, clock, pin mux 2505 * and the connected phy 2506 */ 2507 mtk_hw_deinit(eth); 2508 2509 if (eth->dev->pins) 2510 pinctrl_select_state(eth->dev->pins->p, 2511 eth->dev->pins->default_state); 2512 mtk_hw_init(eth); 2513 2514 /* restart DMA and enable IRQs */ 2515 for (i = 0; i < MTK_MAC_COUNT; i++) { 2516 if (!test_bit(i, &restart)) 2517 continue; 2518 err = mtk_open(eth->netdev[i]); 2519 if (err) { 2520 netif_alert(eth, ifup, eth->netdev[i], 2521 "Driver up/down cycle failed, closing device.\n"); 2522 dev_close(eth->netdev[i]); 2523 } 2524 } 2525 2526 dev_dbg(eth->dev, "[%s][%d] reset done\n", __func__, __LINE__); 2527 2528 clear_bit_unlock(MTK_RESETTING, ð->state); 2529 2530 rtnl_unlock(); 2531 } 2532 2533 static int mtk_free_dev(struct mtk_eth *eth) 2534 { 2535 int i; 2536 2537 for (i = 0; i < MTK_MAC_COUNT; i++) { 2538 if (!eth->netdev[i]) 2539 continue; 2540 free_netdev(eth->netdev[i]); 2541 } 2542 2543 return 0; 2544 } 2545 2546 static int mtk_unreg_dev(struct mtk_eth *eth) 2547 { 2548 int i; 2549 2550 for (i = 0; i < MTK_MAC_COUNT; i++) { 2551 if (!eth->netdev[i]) 2552 continue; 2553 unregister_netdev(eth->netdev[i]); 2554 } 2555 2556 return 0; 2557 } 2558 2559 static int mtk_cleanup(struct mtk_eth *eth) 2560 { 2561 mtk_unreg_dev(eth); 2562 mtk_free_dev(eth); 2563 cancel_work_sync(ð->pending_work); 2564 2565 return 0; 2566 } 2567 2568 static int mtk_get_link_ksettings(struct net_device *ndev, 2569 struct ethtool_link_ksettings *cmd) 2570 { 2571 struct mtk_mac *mac = netdev_priv(ndev); 2572 2573 if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) 2574 return -EBUSY; 2575 2576 return phylink_ethtool_ksettings_get(mac->phylink, cmd); 2577 } 2578 2579 static int mtk_set_link_ksettings(struct net_device *ndev, 2580 const struct ethtool_link_ksettings *cmd) 2581 { 2582 struct mtk_mac *mac = netdev_priv(ndev); 2583 2584 if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) 2585 return -EBUSY; 2586 2587 return phylink_ethtool_ksettings_set(mac->phylink, cmd); 2588 } 2589 2590 static void mtk_get_drvinfo(struct net_device *dev, 2591 struct ethtool_drvinfo *info) 2592 { 2593 struct mtk_mac *mac = netdev_priv(dev); 2594 2595 strlcpy(info->driver, mac->hw->dev->driver->name, sizeof(info->driver)); 2596 strlcpy(info->bus_info, dev_name(mac->hw->dev), sizeof(info->bus_info)); 2597 info->n_stats = ARRAY_SIZE(mtk_ethtool_stats); 2598 } 2599 2600 static u32 mtk_get_msglevel(struct net_device *dev) 2601 { 2602 struct mtk_mac *mac = netdev_priv(dev); 2603 2604 return mac->hw->msg_enable; 2605 } 2606 2607 static void mtk_set_msglevel(struct net_device *dev, u32 value) 2608 { 2609 struct mtk_mac *mac = netdev_priv(dev); 2610 2611 mac->hw->msg_enable = value; 2612 } 2613 2614 static int mtk_nway_reset(struct net_device *dev) 2615 { 2616 struct mtk_mac *mac = netdev_priv(dev); 2617 2618 if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) 2619 return -EBUSY; 2620 2621 if (!mac->phylink) 2622 return -ENOTSUPP; 2623 2624 return phylink_ethtool_nway_reset(mac->phylink); 2625 } 2626 2627 static void mtk_get_strings(struct net_device *dev, u32 stringset, u8 *data) 2628 { 2629 int i; 2630 2631 switch (stringset) { 2632 case ETH_SS_STATS: 2633 for (i = 0; i < ARRAY_SIZE(mtk_ethtool_stats); i++) { 2634 memcpy(data, mtk_ethtool_stats[i].str, ETH_GSTRING_LEN); 2635 data += ETH_GSTRING_LEN; 2636 } 2637 break; 2638 } 2639 } 2640 2641 static int mtk_get_sset_count(struct net_device *dev, int sset) 2642 { 2643 switch (sset) { 2644 case ETH_SS_STATS: 2645 return ARRAY_SIZE(mtk_ethtool_stats); 2646 default: 2647 return -EOPNOTSUPP; 2648 } 2649 } 2650 2651 static void mtk_get_ethtool_stats(struct net_device *dev, 2652 struct ethtool_stats *stats, u64 *data) 2653 { 2654 struct mtk_mac *mac = netdev_priv(dev); 2655 struct mtk_hw_stats *hwstats = mac->hw_stats; 2656 u64 *data_src, *data_dst; 2657 unsigned int start; 2658 int i; 2659 2660 if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) 2661 return; 2662 2663 if (netif_running(dev) && netif_device_present(dev)) { 2664 if (spin_trylock_bh(&hwstats->stats_lock)) { 2665 mtk_stats_update_mac(mac); 2666 spin_unlock_bh(&hwstats->stats_lock); 2667 } 2668 } 2669 2670 data_src = (u64 *)hwstats; 2671 2672 do { 2673 data_dst = data; 2674 start = u64_stats_fetch_begin_irq(&hwstats->syncp); 2675 2676 for (i = 0; i < ARRAY_SIZE(mtk_ethtool_stats); i++) 2677 *data_dst++ = *(data_src + mtk_ethtool_stats[i].offset); 2678 } while (u64_stats_fetch_retry_irq(&hwstats->syncp, start)); 2679 } 2680 2681 static int mtk_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd, 2682 u32 *rule_locs) 2683 { 2684 int ret = -EOPNOTSUPP; 2685 2686 switch (cmd->cmd) { 2687 case ETHTOOL_GRXRINGS: 2688 if (dev->hw_features & NETIF_F_LRO) { 2689 cmd->data = MTK_MAX_RX_RING_NUM; 2690 ret = 0; 2691 } 2692 break; 2693 case ETHTOOL_GRXCLSRLCNT: 2694 if (dev->hw_features & NETIF_F_LRO) { 2695 struct mtk_mac *mac = netdev_priv(dev); 2696 2697 cmd->rule_cnt = mac->hwlro_ip_cnt; 2698 ret = 0; 2699 } 2700 break; 2701 case ETHTOOL_GRXCLSRULE: 2702 if (dev->hw_features & NETIF_F_LRO) 2703 ret = mtk_hwlro_get_fdir_entry(dev, cmd); 2704 break; 2705 case ETHTOOL_GRXCLSRLALL: 2706 if (dev->hw_features & NETIF_F_LRO) 2707 ret = mtk_hwlro_get_fdir_all(dev, cmd, 2708 rule_locs); 2709 break; 2710 default: 2711 break; 2712 } 2713 2714 return ret; 2715 } 2716 2717 static int mtk_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd) 2718 { 2719 int ret = -EOPNOTSUPP; 2720 2721 switch (cmd->cmd) { 2722 case ETHTOOL_SRXCLSRLINS: 2723 if (dev->hw_features & NETIF_F_LRO) 2724 ret = mtk_hwlro_add_ipaddr(dev, cmd); 2725 break; 2726 case ETHTOOL_SRXCLSRLDEL: 2727 if (dev->hw_features & NETIF_F_LRO) 2728 ret = mtk_hwlro_del_ipaddr(dev, cmd); 2729 break; 2730 default: 2731 break; 2732 } 2733 2734 return ret; 2735 } 2736 2737 static const struct ethtool_ops mtk_ethtool_ops = { 2738 .get_link_ksettings = mtk_get_link_ksettings, 2739 .set_link_ksettings = mtk_set_link_ksettings, 2740 .get_drvinfo = mtk_get_drvinfo, 2741 .get_msglevel = mtk_get_msglevel, 2742 .set_msglevel = mtk_set_msglevel, 2743 .nway_reset = mtk_nway_reset, 2744 .get_link = ethtool_op_get_link, 2745 .get_strings = mtk_get_strings, 2746 .get_sset_count = mtk_get_sset_count, 2747 .get_ethtool_stats = mtk_get_ethtool_stats, 2748 .get_rxnfc = mtk_get_rxnfc, 2749 .set_rxnfc = mtk_set_rxnfc, 2750 }; 2751 2752 static const struct net_device_ops mtk_netdev_ops = { 2753 .ndo_init = mtk_init, 2754 .ndo_uninit = mtk_uninit, 2755 .ndo_open = mtk_open, 2756 .ndo_stop = mtk_stop, 2757 .ndo_start_xmit = mtk_start_xmit, 2758 .ndo_set_mac_address = mtk_set_mac_address, 2759 .ndo_validate_addr = eth_validate_addr, 2760 .ndo_do_ioctl = mtk_do_ioctl, 2761 .ndo_tx_timeout = mtk_tx_timeout, 2762 .ndo_get_stats64 = mtk_get_stats64, 2763 .ndo_fix_features = mtk_fix_features, 2764 .ndo_set_features = mtk_set_features, 2765 #ifdef CONFIG_NET_POLL_CONTROLLER 2766 .ndo_poll_controller = mtk_poll_controller, 2767 #endif 2768 }; 2769 2770 static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) 2771 { 2772 const __be32 *_id = of_get_property(np, "reg", NULL); 2773 phy_interface_t phy_mode; 2774 struct phylink *phylink; 2775 struct mtk_mac *mac; 2776 int id, err; 2777 2778 if (!_id) { 2779 dev_err(eth->dev, "missing mac id\n"); 2780 return -EINVAL; 2781 } 2782 2783 id = be32_to_cpup(_id); 2784 if (id >= MTK_MAC_COUNT) { 2785 dev_err(eth->dev, "%d is not a valid mac id\n", id); 2786 return -EINVAL; 2787 } 2788 2789 if (eth->netdev[id]) { 2790 dev_err(eth->dev, "duplicate mac id found: %d\n", id); 2791 return -EINVAL; 2792 } 2793 2794 eth->netdev[id] = alloc_etherdev(sizeof(*mac)); 2795 if (!eth->netdev[id]) { 2796 dev_err(eth->dev, "alloc_etherdev failed\n"); 2797 return -ENOMEM; 2798 } 2799 mac = netdev_priv(eth->netdev[id]); 2800 eth->mac[id] = mac; 2801 mac->id = id; 2802 mac->hw = eth; 2803 mac->of_node = np; 2804 2805 memset(mac->hwlro_ip, 0, sizeof(mac->hwlro_ip)); 2806 mac->hwlro_ip_cnt = 0; 2807 2808 mac->hw_stats = devm_kzalloc(eth->dev, 2809 sizeof(*mac->hw_stats), 2810 GFP_KERNEL); 2811 if (!mac->hw_stats) { 2812 dev_err(eth->dev, "failed to allocate counter memory\n"); 2813 err = -ENOMEM; 2814 goto free_netdev; 2815 } 2816 spin_lock_init(&mac->hw_stats->stats_lock); 2817 u64_stats_init(&mac->hw_stats->syncp); 2818 mac->hw_stats->reg_offset = id * MTK_STAT_OFFSET; 2819 2820 /* phylink create */ 2821 err = of_get_phy_mode(np, &phy_mode); 2822 if (err) { 2823 dev_err(eth->dev, "incorrect phy-mode\n"); 2824 goto free_netdev; 2825 } 2826 2827 /* mac config is not set */ 2828 mac->interface = PHY_INTERFACE_MODE_NA; 2829 mac->mode = MLO_AN_PHY; 2830 mac->speed = SPEED_UNKNOWN; 2831 2832 mac->phylink_config.dev = ð->netdev[id]->dev; 2833 mac->phylink_config.type = PHYLINK_NETDEV; 2834 2835 phylink = phylink_create(&mac->phylink_config, 2836 of_fwnode_handle(mac->of_node), 2837 phy_mode, &mtk_phylink_ops); 2838 if (IS_ERR(phylink)) { 2839 err = PTR_ERR(phylink); 2840 goto free_netdev; 2841 } 2842 2843 mac->phylink = phylink; 2844 2845 SET_NETDEV_DEV(eth->netdev[id], eth->dev); 2846 eth->netdev[id]->watchdog_timeo = 5 * HZ; 2847 eth->netdev[id]->netdev_ops = &mtk_netdev_ops; 2848 eth->netdev[id]->base_addr = (unsigned long)eth->base; 2849 2850 eth->netdev[id]->hw_features = eth->soc->hw_features; 2851 if (eth->hwlro) 2852 eth->netdev[id]->hw_features |= NETIF_F_LRO; 2853 2854 eth->netdev[id]->vlan_features = eth->soc->hw_features & 2855 ~(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX); 2856 eth->netdev[id]->features |= eth->soc->hw_features; 2857 eth->netdev[id]->ethtool_ops = &mtk_ethtool_ops; 2858 2859 eth->netdev[id]->irq = eth->irq[0]; 2860 eth->netdev[id]->dev.of_node = np; 2861 2862 return 0; 2863 2864 free_netdev: 2865 free_netdev(eth->netdev[id]); 2866 return err; 2867 } 2868 2869 static int mtk_probe(struct platform_device *pdev) 2870 { 2871 struct device_node *mac_np; 2872 struct mtk_eth *eth; 2873 int err, i; 2874 2875 eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL); 2876 if (!eth) 2877 return -ENOMEM; 2878 2879 eth->soc = of_device_get_match_data(&pdev->dev); 2880 2881 eth->dev = &pdev->dev; 2882 eth->base = devm_platform_ioremap_resource(pdev, 0); 2883 if (IS_ERR(eth->base)) 2884 return PTR_ERR(eth->base); 2885 2886 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 2887 eth->tx_int_mask_reg = MTK_QDMA_INT_MASK; 2888 eth->tx_int_status_reg = MTK_QDMA_INT_STATUS; 2889 } else { 2890 eth->tx_int_mask_reg = MTK_PDMA_INT_MASK; 2891 eth->tx_int_status_reg = MTK_PDMA_INT_STATUS; 2892 } 2893 2894 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 2895 eth->rx_dma_l4_valid = RX_DMA_L4_VALID_PDMA; 2896 eth->ip_align = NET_IP_ALIGN; 2897 } else { 2898 eth->rx_dma_l4_valid = RX_DMA_L4_VALID; 2899 } 2900 2901 spin_lock_init(ð->page_lock); 2902 spin_lock_init(ð->tx_irq_lock); 2903 spin_lock_init(ð->rx_irq_lock); 2904 2905 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 2906 eth->ethsys = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, 2907 "mediatek,ethsys"); 2908 if (IS_ERR(eth->ethsys)) { 2909 dev_err(&pdev->dev, "no ethsys regmap found\n"); 2910 return PTR_ERR(eth->ethsys); 2911 } 2912 } 2913 2914 if (MTK_HAS_CAPS(eth->soc->caps, MTK_INFRA)) { 2915 eth->infra = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, 2916 "mediatek,infracfg"); 2917 if (IS_ERR(eth->infra)) { 2918 dev_err(&pdev->dev, "no infracfg regmap found\n"); 2919 return PTR_ERR(eth->infra); 2920 } 2921 } 2922 2923 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SGMII)) { 2924 eth->sgmii = devm_kzalloc(eth->dev, sizeof(*eth->sgmii), 2925 GFP_KERNEL); 2926 if (!eth->sgmii) 2927 return -ENOMEM; 2928 2929 err = mtk_sgmii_init(eth->sgmii, pdev->dev.of_node, 2930 eth->soc->ana_rgc3); 2931 2932 if (err) 2933 return err; 2934 } 2935 2936 if (eth->soc->required_pctl) { 2937 eth->pctl = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, 2938 "mediatek,pctl"); 2939 if (IS_ERR(eth->pctl)) { 2940 dev_err(&pdev->dev, "no pctl regmap found\n"); 2941 return PTR_ERR(eth->pctl); 2942 } 2943 } 2944 2945 for (i = 0; i < 3; i++) { 2946 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_INT) && i > 0) 2947 eth->irq[i] = eth->irq[0]; 2948 else 2949 eth->irq[i] = platform_get_irq(pdev, i); 2950 if (eth->irq[i] < 0) { 2951 dev_err(&pdev->dev, "no IRQ%d resource found\n", i); 2952 return -ENXIO; 2953 } 2954 } 2955 for (i = 0; i < ARRAY_SIZE(eth->clks); i++) { 2956 eth->clks[i] = devm_clk_get(eth->dev, 2957 mtk_clks_source_name[i]); 2958 if (IS_ERR(eth->clks[i])) { 2959 if (PTR_ERR(eth->clks[i]) == -EPROBE_DEFER) 2960 return -EPROBE_DEFER; 2961 if (eth->soc->required_clks & BIT(i)) { 2962 dev_err(&pdev->dev, "clock %s not found\n", 2963 mtk_clks_source_name[i]); 2964 return -EINVAL; 2965 } 2966 eth->clks[i] = NULL; 2967 } 2968 } 2969 2970 eth->msg_enable = netif_msg_init(mtk_msg_level, MTK_DEFAULT_MSG_ENABLE); 2971 INIT_WORK(ð->pending_work, mtk_pending_work); 2972 2973 err = mtk_hw_init(eth); 2974 if (err) 2975 return err; 2976 2977 eth->hwlro = MTK_HAS_CAPS(eth->soc->caps, MTK_HWLRO); 2978 2979 for_each_child_of_node(pdev->dev.of_node, mac_np) { 2980 if (!of_device_is_compatible(mac_np, 2981 "mediatek,eth-mac")) 2982 continue; 2983 2984 if (!of_device_is_available(mac_np)) 2985 continue; 2986 2987 err = mtk_add_mac(eth, mac_np); 2988 if (err) { 2989 of_node_put(mac_np); 2990 goto err_deinit_hw; 2991 } 2992 } 2993 2994 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_INT)) { 2995 err = devm_request_irq(eth->dev, eth->irq[0], 2996 mtk_handle_irq, 0, 2997 dev_name(eth->dev), eth); 2998 } else { 2999 err = devm_request_irq(eth->dev, eth->irq[1], 3000 mtk_handle_irq_tx, 0, 3001 dev_name(eth->dev), eth); 3002 if (err) 3003 goto err_free_dev; 3004 3005 err = devm_request_irq(eth->dev, eth->irq[2], 3006 mtk_handle_irq_rx, 0, 3007 dev_name(eth->dev), eth); 3008 } 3009 if (err) 3010 goto err_free_dev; 3011 3012 /* No MT7628/88 support yet */ 3013 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 3014 err = mtk_mdio_init(eth); 3015 if (err) 3016 goto err_free_dev; 3017 } 3018 3019 for (i = 0; i < MTK_MAX_DEVS; i++) { 3020 if (!eth->netdev[i]) 3021 continue; 3022 3023 err = register_netdev(eth->netdev[i]); 3024 if (err) { 3025 dev_err(eth->dev, "error bringing up device\n"); 3026 goto err_deinit_mdio; 3027 } else 3028 netif_info(eth, probe, eth->netdev[i], 3029 "mediatek frame engine at 0x%08lx, irq %d\n", 3030 eth->netdev[i]->base_addr, eth->irq[0]); 3031 } 3032 3033 /* we run 2 devices on the same DMA ring so we need a dummy device 3034 * for NAPI to work 3035 */ 3036 init_dummy_netdev(ð->dummy_dev); 3037 netif_napi_add(ð->dummy_dev, ð->tx_napi, mtk_napi_tx, 3038 MTK_NAPI_WEIGHT); 3039 netif_napi_add(ð->dummy_dev, ð->rx_napi, mtk_napi_rx, 3040 MTK_NAPI_WEIGHT); 3041 3042 platform_set_drvdata(pdev, eth); 3043 3044 return 0; 3045 3046 err_deinit_mdio: 3047 mtk_mdio_cleanup(eth); 3048 err_free_dev: 3049 mtk_free_dev(eth); 3050 err_deinit_hw: 3051 mtk_hw_deinit(eth); 3052 3053 return err; 3054 } 3055 3056 static int mtk_remove(struct platform_device *pdev) 3057 { 3058 struct mtk_eth *eth = platform_get_drvdata(pdev); 3059 struct mtk_mac *mac; 3060 int i; 3061 3062 /* stop all devices to make sure that dma is properly shut down */ 3063 for (i = 0; i < MTK_MAC_COUNT; i++) { 3064 if (!eth->netdev[i]) 3065 continue; 3066 mtk_stop(eth->netdev[i]); 3067 mac = netdev_priv(eth->netdev[i]); 3068 phylink_disconnect_phy(mac->phylink); 3069 } 3070 3071 mtk_hw_deinit(eth); 3072 3073 netif_napi_del(ð->tx_napi); 3074 netif_napi_del(ð->rx_napi); 3075 mtk_cleanup(eth); 3076 mtk_mdio_cleanup(eth); 3077 3078 return 0; 3079 } 3080 3081 static const struct mtk_soc_data mt2701_data = { 3082 .caps = MT7623_CAPS | MTK_HWLRO, 3083 .hw_features = MTK_HW_FEATURES, 3084 .required_clks = MT7623_CLKS_BITMAP, 3085 .required_pctl = true, 3086 }; 3087 3088 static const struct mtk_soc_data mt7621_data = { 3089 .caps = MT7621_CAPS, 3090 .hw_features = MTK_HW_FEATURES, 3091 .required_clks = MT7621_CLKS_BITMAP, 3092 .required_pctl = false, 3093 }; 3094 3095 static const struct mtk_soc_data mt7622_data = { 3096 .ana_rgc3 = 0x2028, 3097 .caps = MT7622_CAPS | MTK_HWLRO, 3098 .hw_features = MTK_HW_FEATURES, 3099 .required_clks = MT7622_CLKS_BITMAP, 3100 .required_pctl = false, 3101 }; 3102 3103 static const struct mtk_soc_data mt7623_data = { 3104 .caps = MT7623_CAPS | MTK_HWLRO, 3105 .hw_features = MTK_HW_FEATURES, 3106 .required_clks = MT7623_CLKS_BITMAP, 3107 .required_pctl = true, 3108 }; 3109 3110 static const struct mtk_soc_data mt7629_data = { 3111 .ana_rgc3 = 0x128, 3112 .caps = MT7629_CAPS | MTK_HWLRO, 3113 .hw_features = MTK_HW_FEATURES, 3114 .required_clks = MT7629_CLKS_BITMAP, 3115 .required_pctl = false, 3116 }; 3117 3118 static const struct mtk_soc_data rt5350_data = { 3119 .caps = MT7628_CAPS, 3120 .hw_features = MTK_HW_FEATURES_MT7628, 3121 .required_clks = MT7628_CLKS_BITMAP, 3122 .required_pctl = false, 3123 }; 3124 3125 const struct of_device_id of_mtk_match[] = { 3126 { .compatible = "mediatek,mt2701-eth", .data = &mt2701_data}, 3127 { .compatible = "mediatek,mt7621-eth", .data = &mt7621_data}, 3128 { .compatible = "mediatek,mt7622-eth", .data = &mt7622_data}, 3129 { .compatible = "mediatek,mt7623-eth", .data = &mt7623_data}, 3130 { .compatible = "mediatek,mt7629-eth", .data = &mt7629_data}, 3131 { .compatible = "ralink,rt5350-eth", .data = &rt5350_data}, 3132 {}, 3133 }; 3134 MODULE_DEVICE_TABLE(of, of_mtk_match); 3135 3136 static struct platform_driver mtk_driver = { 3137 .probe = mtk_probe, 3138 .remove = mtk_remove, 3139 .driver = { 3140 .name = "mtk_soc_eth", 3141 .of_match_table = of_mtk_match, 3142 }, 3143 }; 3144 3145 module_platform_driver(mtk_driver); 3146 3147 MODULE_LICENSE("GPL"); 3148 MODULE_AUTHOR("John Crispin <blogic@openwrt.org>"); 3149 MODULE_DESCRIPTION("Ethernet driver for MediaTek SoC"); 3150