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/of_address.h> 13 #include <linux/mfd/syscon.h> 14 #include <linux/regmap.h> 15 #include <linux/clk.h> 16 #include <linux/pm_runtime.h> 17 #include <linux/if_vlan.h> 18 #include <linux/reset.h> 19 #include <linux/tcp.h> 20 #include <linux/interrupt.h> 21 #include <linux/pinctrl/devinfo.h> 22 #include <linux/phylink.h> 23 #include <linux/jhash.h> 24 #include <linux/bitfield.h> 25 #include <net/dsa.h> 26 #include <net/dst_metadata.h> 27 28 #include "mtk_eth_soc.h" 29 #include "mtk_wed.h" 30 31 static int mtk_msg_level = -1; 32 module_param_named(msg_level, mtk_msg_level, int, 0); 33 MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)"); 34 35 #define MTK_ETHTOOL_STAT(x) { #x, \ 36 offsetof(struct mtk_hw_stats, x) / sizeof(u64) } 37 38 #define MTK_ETHTOOL_XDP_STAT(x) { #x, \ 39 offsetof(struct mtk_hw_stats, xdp_stats.x) / \ 40 sizeof(u64) } 41 42 static const struct mtk_reg_map mtk_reg_map = { 43 .tx_irq_mask = 0x1a1c, 44 .tx_irq_status = 0x1a18, 45 .pdma = { 46 .rx_ptr = 0x0900, 47 .rx_cnt_cfg = 0x0904, 48 .pcrx_ptr = 0x0908, 49 .glo_cfg = 0x0a04, 50 .rst_idx = 0x0a08, 51 .delay_irq = 0x0a0c, 52 .irq_status = 0x0a20, 53 .irq_mask = 0x0a28, 54 .adma_rx_dbg0 = 0x0a38, 55 .int_grp = 0x0a50, 56 }, 57 .qdma = { 58 .qtx_cfg = 0x1800, 59 .qtx_sch = 0x1804, 60 .rx_ptr = 0x1900, 61 .rx_cnt_cfg = 0x1904, 62 .qcrx_ptr = 0x1908, 63 .glo_cfg = 0x1a04, 64 .rst_idx = 0x1a08, 65 .delay_irq = 0x1a0c, 66 .fc_th = 0x1a10, 67 .tx_sch_rate = 0x1a14, 68 .int_grp = 0x1a20, 69 .hred = 0x1a44, 70 .ctx_ptr = 0x1b00, 71 .dtx_ptr = 0x1b04, 72 .crx_ptr = 0x1b10, 73 .drx_ptr = 0x1b14, 74 .fq_head = 0x1b20, 75 .fq_tail = 0x1b24, 76 .fq_count = 0x1b28, 77 .fq_blen = 0x1b2c, 78 }, 79 .gdm1_cnt = 0x2400, 80 .gdma_to_ppe = 0x4444, 81 .ppe_base = 0x0c00, 82 .wdma_base = { 83 [0] = 0x2800, 84 [1] = 0x2c00, 85 }, 86 .pse_iq_sta = 0x0110, 87 .pse_oq_sta = 0x0118, 88 }; 89 90 static const struct mtk_reg_map mt7628_reg_map = { 91 .tx_irq_mask = 0x0a28, 92 .tx_irq_status = 0x0a20, 93 .pdma = { 94 .rx_ptr = 0x0900, 95 .rx_cnt_cfg = 0x0904, 96 .pcrx_ptr = 0x0908, 97 .glo_cfg = 0x0a04, 98 .rst_idx = 0x0a08, 99 .delay_irq = 0x0a0c, 100 .irq_status = 0x0a20, 101 .irq_mask = 0x0a28, 102 .int_grp = 0x0a50, 103 }, 104 }; 105 106 static const struct mtk_reg_map mt7986_reg_map = { 107 .tx_irq_mask = 0x461c, 108 .tx_irq_status = 0x4618, 109 .pdma = { 110 .rx_ptr = 0x6100, 111 .rx_cnt_cfg = 0x6104, 112 .pcrx_ptr = 0x6108, 113 .glo_cfg = 0x6204, 114 .rst_idx = 0x6208, 115 .delay_irq = 0x620c, 116 .irq_status = 0x6220, 117 .irq_mask = 0x6228, 118 .adma_rx_dbg0 = 0x6238, 119 .int_grp = 0x6250, 120 }, 121 .qdma = { 122 .qtx_cfg = 0x4400, 123 .qtx_sch = 0x4404, 124 .rx_ptr = 0x4500, 125 .rx_cnt_cfg = 0x4504, 126 .qcrx_ptr = 0x4508, 127 .glo_cfg = 0x4604, 128 .rst_idx = 0x4608, 129 .delay_irq = 0x460c, 130 .fc_th = 0x4610, 131 .int_grp = 0x4620, 132 .hred = 0x4644, 133 .ctx_ptr = 0x4700, 134 .dtx_ptr = 0x4704, 135 .crx_ptr = 0x4710, 136 .drx_ptr = 0x4714, 137 .fq_head = 0x4720, 138 .fq_tail = 0x4724, 139 .fq_count = 0x4728, 140 .fq_blen = 0x472c, 141 .tx_sch_rate = 0x4798, 142 }, 143 .gdm1_cnt = 0x1c00, 144 .gdma_to_ppe = 0x3333, 145 .ppe_base = 0x2000, 146 .wdma_base = { 147 [0] = 0x4800, 148 [1] = 0x4c00, 149 }, 150 .pse_iq_sta = 0x0180, 151 .pse_oq_sta = 0x01a0, 152 }; 153 154 /* strings used by ethtool */ 155 static const struct mtk_ethtool_stats { 156 char str[ETH_GSTRING_LEN]; 157 u32 offset; 158 } mtk_ethtool_stats[] = { 159 MTK_ETHTOOL_STAT(tx_bytes), 160 MTK_ETHTOOL_STAT(tx_packets), 161 MTK_ETHTOOL_STAT(tx_skip), 162 MTK_ETHTOOL_STAT(tx_collisions), 163 MTK_ETHTOOL_STAT(rx_bytes), 164 MTK_ETHTOOL_STAT(rx_packets), 165 MTK_ETHTOOL_STAT(rx_overflow), 166 MTK_ETHTOOL_STAT(rx_fcs_errors), 167 MTK_ETHTOOL_STAT(rx_short_errors), 168 MTK_ETHTOOL_STAT(rx_long_errors), 169 MTK_ETHTOOL_STAT(rx_checksum_errors), 170 MTK_ETHTOOL_STAT(rx_flow_control_packets), 171 MTK_ETHTOOL_XDP_STAT(rx_xdp_redirect), 172 MTK_ETHTOOL_XDP_STAT(rx_xdp_pass), 173 MTK_ETHTOOL_XDP_STAT(rx_xdp_drop), 174 MTK_ETHTOOL_XDP_STAT(rx_xdp_tx), 175 MTK_ETHTOOL_XDP_STAT(rx_xdp_tx_errors), 176 MTK_ETHTOOL_XDP_STAT(tx_xdp_xmit), 177 MTK_ETHTOOL_XDP_STAT(tx_xdp_xmit_errors), 178 }; 179 180 static const char * const mtk_clks_source_name[] = { 181 "ethif", "sgmiitop", "esw", "gp0", "gp1", "gp2", "fe", "trgpll", 182 "sgmii_tx250m", "sgmii_rx250m", "sgmii_cdr_ref", "sgmii_cdr_fb", 183 "sgmii2_tx250m", "sgmii2_rx250m", "sgmii2_cdr_ref", "sgmii2_cdr_fb", 184 "sgmii_ck", "eth2pll", "wocpu0", "wocpu1", "netsys0", "netsys1" 185 }; 186 187 void mtk_w32(struct mtk_eth *eth, u32 val, unsigned reg) 188 { 189 __raw_writel(val, eth->base + reg); 190 } 191 192 u32 mtk_r32(struct mtk_eth *eth, unsigned reg) 193 { 194 return __raw_readl(eth->base + reg); 195 } 196 197 static u32 mtk_m32(struct mtk_eth *eth, u32 mask, u32 set, unsigned reg) 198 { 199 u32 val; 200 201 val = mtk_r32(eth, reg); 202 val &= ~mask; 203 val |= set; 204 mtk_w32(eth, val, reg); 205 return reg; 206 } 207 208 static int mtk_mdio_busy_wait(struct mtk_eth *eth) 209 { 210 unsigned long t_start = jiffies; 211 212 while (1) { 213 if (!(mtk_r32(eth, MTK_PHY_IAC) & PHY_IAC_ACCESS)) 214 return 0; 215 if (time_after(jiffies, t_start + PHY_IAC_TIMEOUT)) 216 break; 217 cond_resched(); 218 } 219 220 dev_err(eth->dev, "mdio: MDIO timeout\n"); 221 return -ETIMEDOUT; 222 } 223 224 static int _mtk_mdio_write_c22(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg, 225 u32 write_data) 226 { 227 int ret; 228 229 ret = mtk_mdio_busy_wait(eth); 230 if (ret < 0) 231 return ret; 232 233 mtk_w32(eth, PHY_IAC_ACCESS | 234 PHY_IAC_START_C22 | 235 PHY_IAC_CMD_WRITE | 236 PHY_IAC_REG(phy_reg) | 237 PHY_IAC_ADDR(phy_addr) | 238 PHY_IAC_DATA(write_data), 239 MTK_PHY_IAC); 240 241 ret = mtk_mdio_busy_wait(eth); 242 if (ret < 0) 243 return ret; 244 245 return 0; 246 } 247 248 static int _mtk_mdio_write_c45(struct mtk_eth *eth, u32 phy_addr, 249 u32 devad, u32 phy_reg, u32 write_data) 250 { 251 int ret; 252 253 ret = mtk_mdio_busy_wait(eth); 254 if (ret < 0) 255 return ret; 256 257 mtk_w32(eth, PHY_IAC_ACCESS | 258 PHY_IAC_START_C45 | 259 PHY_IAC_CMD_C45_ADDR | 260 PHY_IAC_REG(devad) | 261 PHY_IAC_ADDR(phy_addr) | 262 PHY_IAC_DATA(phy_reg), 263 MTK_PHY_IAC); 264 265 ret = mtk_mdio_busy_wait(eth); 266 if (ret < 0) 267 return ret; 268 269 mtk_w32(eth, PHY_IAC_ACCESS | 270 PHY_IAC_START_C45 | 271 PHY_IAC_CMD_WRITE | 272 PHY_IAC_REG(devad) | 273 PHY_IAC_ADDR(phy_addr) | 274 PHY_IAC_DATA(write_data), 275 MTK_PHY_IAC); 276 277 ret = mtk_mdio_busy_wait(eth); 278 if (ret < 0) 279 return ret; 280 281 return 0; 282 } 283 284 static int _mtk_mdio_read_c22(struct mtk_eth *eth, u32 phy_addr, u32 phy_reg) 285 { 286 int ret; 287 288 ret = mtk_mdio_busy_wait(eth); 289 if (ret < 0) 290 return ret; 291 292 mtk_w32(eth, PHY_IAC_ACCESS | 293 PHY_IAC_START_C22 | 294 PHY_IAC_CMD_C22_READ | 295 PHY_IAC_REG(phy_reg) | 296 PHY_IAC_ADDR(phy_addr), 297 MTK_PHY_IAC); 298 299 ret = mtk_mdio_busy_wait(eth); 300 if (ret < 0) 301 return ret; 302 303 return mtk_r32(eth, MTK_PHY_IAC) & PHY_IAC_DATA_MASK; 304 } 305 306 static int _mtk_mdio_read_c45(struct mtk_eth *eth, u32 phy_addr, 307 u32 devad, u32 phy_reg) 308 { 309 int ret; 310 311 ret = mtk_mdio_busy_wait(eth); 312 if (ret < 0) 313 return ret; 314 315 mtk_w32(eth, PHY_IAC_ACCESS | 316 PHY_IAC_START_C45 | 317 PHY_IAC_CMD_C45_ADDR | 318 PHY_IAC_REG(devad) | 319 PHY_IAC_ADDR(phy_addr) | 320 PHY_IAC_DATA(phy_reg), 321 MTK_PHY_IAC); 322 323 ret = mtk_mdio_busy_wait(eth); 324 if (ret < 0) 325 return ret; 326 327 mtk_w32(eth, PHY_IAC_ACCESS | 328 PHY_IAC_START_C45 | 329 PHY_IAC_CMD_C45_READ | 330 PHY_IAC_REG(devad) | 331 PHY_IAC_ADDR(phy_addr), 332 MTK_PHY_IAC); 333 334 ret = mtk_mdio_busy_wait(eth); 335 if (ret < 0) 336 return ret; 337 338 return mtk_r32(eth, MTK_PHY_IAC) & PHY_IAC_DATA_MASK; 339 } 340 341 static int mtk_mdio_write_c22(struct mii_bus *bus, int phy_addr, 342 int phy_reg, u16 val) 343 { 344 struct mtk_eth *eth = bus->priv; 345 346 return _mtk_mdio_write_c22(eth, phy_addr, phy_reg, val); 347 } 348 349 static int mtk_mdio_write_c45(struct mii_bus *bus, int phy_addr, 350 int devad, int phy_reg, u16 val) 351 { 352 struct mtk_eth *eth = bus->priv; 353 354 return _mtk_mdio_write_c45(eth, phy_addr, devad, phy_reg, val); 355 } 356 357 static int mtk_mdio_read_c22(struct mii_bus *bus, int phy_addr, int phy_reg) 358 { 359 struct mtk_eth *eth = bus->priv; 360 361 return _mtk_mdio_read_c22(eth, phy_addr, phy_reg); 362 } 363 364 static int mtk_mdio_read_c45(struct mii_bus *bus, int phy_addr, int devad, 365 int phy_reg) 366 { 367 struct mtk_eth *eth = bus->priv; 368 369 return _mtk_mdio_read_c45(eth, phy_addr, devad, phy_reg); 370 } 371 372 static int mt7621_gmac0_rgmii_adjust(struct mtk_eth *eth, 373 phy_interface_t interface) 374 { 375 u32 val; 376 377 /* Check DDR memory type. 378 * Currently TRGMII mode with DDR2 memory is not supported. 379 */ 380 regmap_read(eth->ethsys, ETHSYS_SYSCFG, &val); 381 if (interface == PHY_INTERFACE_MODE_TRGMII && 382 val & SYSCFG_DRAM_TYPE_DDR2) { 383 dev_err(eth->dev, 384 "TRGMII mode with DDR2 memory is not supported!\n"); 385 return -EOPNOTSUPP; 386 } 387 388 val = (interface == PHY_INTERFACE_MODE_TRGMII) ? 389 ETHSYS_TRGMII_MT7621_DDR_PLL : 0; 390 391 regmap_update_bits(eth->ethsys, ETHSYS_CLKCFG0, 392 ETHSYS_TRGMII_MT7621_MASK, val); 393 394 return 0; 395 } 396 397 static void mtk_gmac0_rgmii_adjust(struct mtk_eth *eth, 398 phy_interface_t interface, int speed) 399 { 400 u32 val; 401 int ret; 402 403 if (interface == PHY_INTERFACE_MODE_TRGMII) { 404 mtk_w32(eth, TRGMII_MODE, INTF_MODE); 405 val = 500000000; 406 ret = clk_set_rate(eth->clks[MTK_CLK_TRGPLL], val); 407 if (ret) 408 dev_err(eth->dev, "Failed to set trgmii pll: %d\n", ret); 409 return; 410 } 411 412 val = (speed == SPEED_1000) ? 413 INTF_MODE_RGMII_1000 : INTF_MODE_RGMII_10_100; 414 mtk_w32(eth, val, INTF_MODE); 415 416 regmap_update_bits(eth->ethsys, ETHSYS_CLKCFG0, 417 ETHSYS_TRGMII_CLK_SEL362_5, 418 ETHSYS_TRGMII_CLK_SEL362_5); 419 420 val = (speed == SPEED_1000) ? 250000000 : 500000000; 421 ret = clk_set_rate(eth->clks[MTK_CLK_TRGPLL], val); 422 if (ret) 423 dev_err(eth->dev, "Failed to set trgmii pll: %d\n", ret); 424 425 val = (speed == SPEED_1000) ? 426 RCK_CTRL_RGMII_1000 : RCK_CTRL_RGMII_10_100; 427 mtk_w32(eth, val, TRGMII_RCK_CTRL); 428 429 val = (speed == SPEED_1000) ? 430 TCK_CTRL_RGMII_1000 : TCK_CTRL_RGMII_10_100; 431 mtk_w32(eth, val, TRGMII_TCK_CTRL); 432 } 433 434 static struct phylink_pcs *mtk_mac_select_pcs(struct phylink_config *config, 435 phy_interface_t interface) 436 { 437 struct mtk_mac *mac = container_of(config, struct mtk_mac, 438 phylink_config); 439 struct mtk_eth *eth = mac->hw; 440 unsigned int sid; 441 442 if (interface == PHY_INTERFACE_MODE_SGMII || 443 phy_interface_mode_is_8023z(interface)) { 444 sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ? 445 0 : mac->id; 446 447 return mtk_sgmii_select_pcs(eth->sgmii, sid); 448 } 449 450 return NULL; 451 } 452 453 static void mtk_mac_config(struct phylink_config *config, unsigned int mode, 454 const struct phylink_link_state *state) 455 { 456 struct mtk_mac *mac = container_of(config, struct mtk_mac, 457 phylink_config); 458 struct mtk_eth *eth = mac->hw; 459 int val, ge_mode, err = 0; 460 u32 i; 461 462 /* MT76x8 has no hardware settings between for the MAC */ 463 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628) && 464 mac->interface != state->interface) { 465 /* Setup soc pin functions */ 466 switch (state->interface) { 467 case PHY_INTERFACE_MODE_TRGMII: 468 if (mac->id) 469 goto err_phy; 470 if (!MTK_HAS_CAPS(mac->hw->soc->caps, 471 MTK_GMAC1_TRGMII)) 472 goto err_phy; 473 fallthrough; 474 case PHY_INTERFACE_MODE_RGMII_TXID: 475 case PHY_INTERFACE_MODE_RGMII_RXID: 476 case PHY_INTERFACE_MODE_RGMII_ID: 477 case PHY_INTERFACE_MODE_RGMII: 478 case PHY_INTERFACE_MODE_MII: 479 case PHY_INTERFACE_MODE_REVMII: 480 case PHY_INTERFACE_MODE_RMII: 481 if (MTK_HAS_CAPS(eth->soc->caps, MTK_RGMII)) { 482 err = mtk_gmac_rgmii_path_setup(eth, mac->id); 483 if (err) 484 goto init_err; 485 } 486 break; 487 case PHY_INTERFACE_MODE_1000BASEX: 488 case PHY_INTERFACE_MODE_2500BASEX: 489 case PHY_INTERFACE_MODE_SGMII: 490 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SGMII)) { 491 err = mtk_gmac_sgmii_path_setup(eth, mac->id); 492 if (err) 493 goto init_err; 494 } 495 break; 496 case PHY_INTERFACE_MODE_GMII: 497 if (MTK_HAS_CAPS(eth->soc->caps, MTK_GEPHY)) { 498 err = mtk_gmac_gephy_path_setup(eth, mac->id); 499 if (err) 500 goto init_err; 501 } 502 break; 503 default: 504 goto err_phy; 505 } 506 507 /* Setup clock for 1st gmac */ 508 if (!mac->id && state->interface != PHY_INTERFACE_MODE_SGMII && 509 !phy_interface_mode_is_8023z(state->interface) && 510 MTK_HAS_CAPS(mac->hw->soc->caps, MTK_GMAC1_TRGMII)) { 511 if (MTK_HAS_CAPS(mac->hw->soc->caps, 512 MTK_TRGMII_MT7621_CLK)) { 513 if (mt7621_gmac0_rgmii_adjust(mac->hw, 514 state->interface)) 515 goto err_phy; 516 } else { 517 /* FIXME: this is incorrect. Not only does it 518 * use state->speed (which is not guaranteed 519 * to be correct) but it also makes use of it 520 * in a code path that will only be reachable 521 * when the PHY interface mode changes, not 522 * when the speed changes. Consequently, RGMII 523 * is probably broken. 524 */ 525 mtk_gmac0_rgmii_adjust(mac->hw, 526 state->interface, 527 state->speed); 528 529 /* mt7623_pad_clk_setup */ 530 for (i = 0 ; i < NUM_TRGMII_CTRL; i++) 531 mtk_w32(mac->hw, 532 TD_DM_DRVP(8) | TD_DM_DRVN(8), 533 TRGMII_TD_ODT(i)); 534 535 /* Assert/release MT7623 RXC reset */ 536 mtk_m32(mac->hw, 0, RXC_RST | RXC_DQSISEL, 537 TRGMII_RCK_CTRL); 538 mtk_m32(mac->hw, RXC_RST, 0, TRGMII_RCK_CTRL); 539 } 540 } 541 542 ge_mode = 0; 543 switch (state->interface) { 544 case PHY_INTERFACE_MODE_MII: 545 case PHY_INTERFACE_MODE_GMII: 546 ge_mode = 1; 547 break; 548 case PHY_INTERFACE_MODE_REVMII: 549 ge_mode = 2; 550 break; 551 case PHY_INTERFACE_MODE_RMII: 552 if (mac->id) 553 goto err_phy; 554 ge_mode = 3; 555 break; 556 default: 557 break; 558 } 559 560 /* put the gmac into the right mode */ 561 regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val); 562 val &= ~SYSCFG0_GE_MODE(SYSCFG0_GE_MASK, mac->id); 563 val |= SYSCFG0_GE_MODE(ge_mode, mac->id); 564 regmap_write(eth->ethsys, ETHSYS_SYSCFG0, val); 565 566 mac->interface = state->interface; 567 } 568 569 /* SGMII */ 570 if (state->interface == PHY_INTERFACE_MODE_SGMII || 571 phy_interface_mode_is_8023z(state->interface)) { 572 /* The path GMAC to SGMII will be enabled once the SGMIISYS is 573 * being setup done. 574 */ 575 regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val); 576 577 regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0, 578 SYSCFG0_SGMII_MASK, 579 ~(u32)SYSCFG0_SGMII_MASK); 580 581 /* Save the syscfg0 value for mac_finish */ 582 mac->syscfg0 = val; 583 } else if (phylink_autoneg_inband(mode)) { 584 dev_err(eth->dev, 585 "In-band mode not supported in non SGMII mode!\n"); 586 return; 587 } 588 589 return; 590 591 err_phy: 592 dev_err(eth->dev, "%s: GMAC%d mode %s not supported!\n", __func__, 593 mac->id, phy_modes(state->interface)); 594 return; 595 596 init_err: 597 dev_err(eth->dev, "%s: GMAC%d mode %s err: %d!\n", __func__, 598 mac->id, phy_modes(state->interface), err); 599 } 600 601 static int mtk_mac_finish(struct phylink_config *config, unsigned int mode, 602 phy_interface_t interface) 603 { 604 struct mtk_mac *mac = container_of(config, struct mtk_mac, 605 phylink_config); 606 struct mtk_eth *eth = mac->hw; 607 u32 mcr_cur, mcr_new; 608 609 /* Enable SGMII */ 610 if (interface == PHY_INTERFACE_MODE_SGMII || 611 phy_interface_mode_is_8023z(interface)) 612 regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0, 613 SYSCFG0_SGMII_MASK, mac->syscfg0); 614 615 /* Setup gmac */ 616 mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); 617 mcr_new = mcr_cur; 618 mcr_new |= MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | 619 MAC_MCR_BACKOFF_EN | MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_LINK | 620 MAC_MCR_RX_FIFO_CLR_DIS; 621 622 /* Only update control register when needed! */ 623 if (mcr_new != mcr_cur) 624 mtk_w32(mac->hw, mcr_new, MTK_MAC_MCR(mac->id)); 625 626 return 0; 627 } 628 629 static void mtk_mac_pcs_get_state(struct phylink_config *config, 630 struct phylink_link_state *state) 631 { 632 struct mtk_mac *mac = container_of(config, struct mtk_mac, 633 phylink_config); 634 u32 pmsr = mtk_r32(mac->hw, MTK_MAC_MSR(mac->id)); 635 636 state->link = (pmsr & MAC_MSR_LINK); 637 state->duplex = (pmsr & MAC_MSR_DPX) >> 1; 638 639 switch (pmsr & (MAC_MSR_SPEED_1000 | MAC_MSR_SPEED_100)) { 640 case 0: 641 state->speed = SPEED_10; 642 break; 643 case MAC_MSR_SPEED_100: 644 state->speed = SPEED_100; 645 break; 646 case MAC_MSR_SPEED_1000: 647 state->speed = SPEED_1000; 648 break; 649 default: 650 state->speed = SPEED_UNKNOWN; 651 break; 652 } 653 654 state->pause &= (MLO_PAUSE_RX | MLO_PAUSE_TX); 655 if (pmsr & MAC_MSR_RX_FC) 656 state->pause |= MLO_PAUSE_RX; 657 if (pmsr & MAC_MSR_TX_FC) 658 state->pause |= MLO_PAUSE_TX; 659 } 660 661 static void mtk_mac_link_down(struct phylink_config *config, unsigned int mode, 662 phy_interface_t interface) 663 { 664 struct mtk_mac *mac = container_of(config, struct mtk_mac, 665 phylink_config); 666 u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); 667 668 mcr &= ~(MAC_MCR_TX_EN | MAC_MCR_RX_EN); 669 mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); 670 } 671 672 static void mtk_set_queue_speed(struct mtk_eth *eth, unsigned int idx, 673 int speed) 674 { 675 const struct mtk_soc_data *soc = eth->soc; 676 u32 ofs, val; 677 678 if (!MTK_HAS_CAPS(soc->caps, MTK_QDMA)) 679 return; 680 681 val = MTK_QTX_SCH_MIN_RATE_EN | 682 /* minimum: 10 Mbps */ 683 FIELD_PREP(MTK_QTX_SCH_MIN_RATE_MAN, 1) | 684 FIELD_PREP(MTK_QTX_SCH_MIN_RATE_EXP, 4) | 685 MTK_QTX_SCH_LEAKY_BUCKET_SIZE; 686 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) 687 val |= MTK_QTX_SCH_LEAKY_BUCKET_EN; 688 689 if (IS_ENABLED(CONFIG_SOC_MT7621)) { 690 switch (speed) { 691 case SPEED_10: 692 val |= MTK_QTX_SCH_MAX_RATE_EN | 693 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_MAN, 103) | 694 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_EXP, 2) | 695 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_WEIGHT, 1); 696 break; 697 case SPEED_100: 698 val |= MTK_QTX_SCH_MAX_RATE_EN | 699 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_MAN, 103) | 700 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_EXP, 3); 701 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_WEIGHT, 1); 702 break; 703 case SPEED_1000: 704 val |= MTK_QTX_SCH_MAX_RATE_EN | 705 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_MAN, 105) | 706 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_EXP, 4) | 707 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_WEIGHT, 10); 708 break; 709 default: 710 break; 711 } 712 } else { 713 switch (speed) { 714 case SPEED_10: 715 val |= MTK_QTX_SCH_MAX_RATE_EN | 716 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_MAN, 1) | 717 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_EXP, 4) | 718 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_WEIGHT, 1); 719 break; 720 case SPEED_100: 721 val |= MTK_QTX_SCH_MAX_RATE_EN | 722 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_MAN, 1) | 723 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_EXP, 5); 724 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_WEIGHT, 1); 725 break; 726 case SPEED_1000: 727 val |= MTK_QTX_SCH_MAX_RATE_EN | 728 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_MAN, 10) | 729 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_EXP, 5) | 730 FIELD_PREP(MTK_QTX_SCH_MAX_RATE_WEIGHT, 10); 731 break; 732 default: 733 break; 734 } 735 } 736 737 ofs = MTK_QTX_OFFSET * idx; 738 mtk_w32(eth, val, soc->reg_map->qdma.qtx_sch + ofs); 739 } 740 741 static void mtk_mac_link_up(struct phylink_config *config, 742 struct phy_device *phy, 743 unsigned int mode, phy_interface_t interface, 744 int speed, int duplex, bool tx_pause, bool rx_pause) 745 { 746 struct mtk_mac *mac = container_of(config, struct mtk_mac, 747 phylink_config); 748 u32 mcr; 749 750 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); 751 mcr &= ~(MAC_MCR_SPEED_100 | MAC_MCR_SPEED_1000 | 752 MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_TX_FC | 753 MAC_MCR_FORCE_RX_FC); 754 755 /* Configure speed */ 756 mac->speed = speed; 757 switch (speed) { 758 case SPEED_2500: 759 case SPEED_1000: 760 mcr |= MAC_MCR_SPEED_1000; 761 break; 762 case SPEED_100: 763 mcr |= MAC_MCR_SPEED_100; 764 break; 765 } 766 767 /* Configure duplex */ 768 if (duplex == DUPLEX_FULL) 769 mcr |= MAC_MCR_FORCE_DPX; 770 771 /* Configure pause modes - phylink will avoid these for half duplex */ 772 if (tx_pause) 773 mcr |= MAC_MCR_FORCE_TX_FC; 774 if (rx_pause) 775 mcr |= MAC_MCR_FORCE_RX_FC; 776 777 mcr |= MAC_MCR_TX_EN | MAC_MCR_RX_EN; 778 mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id)); 779 } 780 781 static const struct phylink_mac_ops mtk_phylink_ops = { 782 .mac_select_pcs = mtk_mac_select_pcs, 783 .mac_pcs_get_state = mtk_mac_pcs_get_state, 784 .mac_config = mtk_mac_config, 785 .mac_finish = mtk_mac_finish, 786 .mac_link_down = mtk_mac_link_down, 787 .mac_link_up = mtk_mac_link_up, 788 }; 789 790 static int mtk_mdio_init(struct mtk_eth *eth) 791 { 792 struct device_node *mii_np; 793 int ret; 794 795 mii_np = of_get_child_by_name(eth->dev->of_node, "mdio-bus"); 796 if (!mii_np) { 797 dev_err(eth->dev, "no %s child node found", "mdio-bus"); 798 return -ENODEV; 799 } 800 801 if (!of_device_is_available(mii_np)) { 802 ret = -ENODEV; 803 goto err_put_node; 804 } 805 806 eth->mii_bus = devm_mdiobus_alloc(eth->dev); 807 if (!eth->mii_bus) { 808 ret = -ENOMEM; 809 goto err_put_node; 810 } 811 812 eth->mii_bus->name = "mdio"; 813 eth->mii_bus->read = mtk_mdio_read_c22; 814 eth->mii_bus->write = mtk_mdio_write_c22; 815 eth->mii_bus->read_c45 = mtk_mdio_read_c45; 816 eth->mii_bus->write_c45 = mtk_mdio_write_c45; 817 eth->mii_bus->priv = eth; 818 eth->mii_bus->parent = eth->dev; 819 820 snprintf(eth->mii_bus->id, MII_BUS_ID_SIZE, "%pOFn", mii_np); 821 ret = of_mdiobus_register(eth->mii_bus, mii_np); 822 823 err_put_node: 824 of_node_put(mii_np); 825 return ret; 826 } 827 828 static void mtk_mdio_cleanup(struct mtk_eth *eth) 829 { 830 if (!eth->mii_bus) 831 return; 832 833 mdiobus_unregister(eth->mii_bus); 834 } 835 836 static inline void mtk_tx_irq_disable(struct mtk_eth *eth, u32 mask) 837 { 838 unsigned long flags; 839 u32 val; 840 841 spin_lock_irqsave(ð->tx_irq_lock, flags); 842 val = mtk_r32(eth, eth->soc->reg_map->tx_irq_mask); 843 mtk_w32(eth, val & ~mask, eth->soc->reg_map->tx_irq_mask); 844 spin_unlock_irqrestore(ð->tx_irq_lock, flags); 845 } 846 847 static inline void mtk_tx_irq_enable(struct mtk_eth *eth, u32 mask) 848 { 849 unsigned long flags; 850 u32 val; 851 852 spin_lock_irqsave(ð->tx_irq_lock, flags); 853 val = mtk_r32(eth, eth->soc->reg_map->tx_irq_mask); 854 mtk_w32(eth, val | mask, eth->soc->reg_map->tx_irq_mask); 855 spin_unlock_irqrestore(ð->tx_irq_lock, flags); 856 } 857 858 static inline void mtk_rx_irq_disable(struct mtk_eth *eth, u32 mask) 859 { 860 unsigned long flags; 861 u32 val; 862 863 spin_lock_irqsave(ð->rx_irq_lock, flags); 864 val = mtk_r32(eth, eth->soc->reg_map->pdma.irq_mask); 865 mtk_w32(eth, val & ~mask, eth->soc->reg_map->pdma.irq_mask); 866 spin_unlock_irqrestore(ð->rx_irq_lock, flags); 867 } 868 869 static inline void mtk_rx_irq_enable(struct mtk_eth *eth, u32 mask) 870 { 871 unsigned long flags; 872 u32 val; 873 874 spin_lock_irqsave(ð->rx_irq_lock, flags); 875 val = mtk_r32(eth, eth->soc->reg_map->pdma.irq_mask); 876 mtk_w32(eth, val | mask, eth->soc->reg_map->pdma.irq_mask); 877 spin_unlock_irqrestore(ð->rx_irq_lock, flags); 878 } 879 880 static int mtk_set_mac_address(struct net_device *dev, void *p) 881 { 882 int ret = eth_mac_addr(dev, p); 883 struct mtk_mac *mac = netdev_priv(dev); 884 struct mtk_eth *eth = mac->hw; 885 const char *macaddr = dev->dev_addr; 886 887 if (ret) 888 return ret; 889 890 if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) 891 return -EBUSY; 892 893 spin_lock_bh(&mac->hw->page_lock); 894 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 895 mtk_w32(mac->hw, (macaddr[0] << 8) | macaddr[1], 896 MT7628_SDM_MAC_ADRH); 897 mtk_w32(mac->hw, (macaddr[2] << 24) | (macaddr[3] << 16) | 898 (macaddr[4] << 8) | macaddr[5], 899 MT7628_SDM_MAC_ADRL); 900 } else { 901 mtk_w32(mac->hw, (macaddr[0] << 8) | macaddr[1], 902 MTK_GDMA_MAC_ADRH(mac->id)); 903 mtk_w32(mac->hw, (macaddr[2] << 24) | (macaddr[3] << 16) | 904 (macaddr[4] << 8) | macaddr[5], 905 MTK_GDMA_MAC_ADRL(mac->id)); 906 } 907 spin_unlock_bh(&mac->hw->page_lock); 908 909 return 0; 910 } 911 912 void mtk_stats_update_mac(struct mtk_mac *mac) 913 { 914 struct mtk_hw_stats *hw_stats = mac->hw_stats; 915 struct mtk_eth *eth = mac->hw; 916 917 u64_stats_update_begin(&hw_stats->syncp); 918 919 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 920 hw_stats->tx_packets += mtk_r32(mac->hw, MT7628_SDM_TPCNT); 921 hw_stats->tx_bytes += mtk_r32(mac->hw, MT7628_SDM_TBCNT); 922 hw_stats->rx_packets += mtk_r32(mac->hw, MT7628_SDM_RPCNT); 923 hw_stats->rx_bytes += mtk_r32(mac->hw, MT7628_SDM_RBCNT); 924 hw_stats->rx_checksum_errors += 925 mtk_r32(mac->hw, MT7628_SDM_CS_ERR); 926 } else { 927 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 928 unsigned int offs = hw_stats->reg_offset; 929 u64 stats; 930 931 hw_stats->rx_bytes += mtk_r32(mac->hw, reg_map->gdm1_cnt + offs); 932 stats = mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x4 + offs); 933 if (stats) 934 hw_stats->rx_bytes += (stats << 32); 935 hw_stats->rx_packets += 936 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x8 + offs); 937 hw_stats->rx_overflow += 938 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x10 + offs); 939 hw_stats->rx_fcs_errors += 940 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x14 + offs); 941 hw_stats->rx_short_errors += 942 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x18 + offs); 943 hw_stats->rx_long_errors += 944 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x1c + offs); 945 hw_stats->rx_checksum_errors += 946 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x20 + offs); 947 hw_stats->rx_flow_control_packets += 948 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x24 + offs); 949 hw_stats->tx_skip += 950 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x28 + offs); 951 hw_stats->tx_collisions += 952 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x2c + offs); 953 hw_stats->tx_bytes += 954 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x30 + offs); 955 stats = mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x34 + offs); 956 if (stats) 957 hw_stats->tx_bytes += (stats << 32); 958 hw_stats->tx_packets += 959 mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x38 + offs); 960 } 961 962 u64_stats_update_end(&hw_stats->syncp); 963 } 964 965 static void mtk_stats_update(struct mtk_eth *eth) 966 { 967 int i; 968 969 for (i = 0; i < MTK_MAC_COUNT; i++) { 970 if (!eth->mac[i] || !eth->mac[i]->hw_stats) 971 continue; 972 if (spin_trylock(ð->mac[i]->hw_stats->stats_lock)) { 973 mtk_stats_update_mac(eth->mac[i]); 974 spin_unlock(ð->mac[i]->hw_stats->stats_lock); 975 } 976 } 977 } 978 979 static void mtk_get_stats64(struct net_device *dev, 980 struct rtnl_link_stats64 *storage) 981 { 982 struct mtk_mac *mac = netdev_priv(dev); 983 struct mtk_hw_stats *hw_stats = mac->hw_stats; 984 unsigned int start; 985 986 if (netif_running(dev) && netif_device_present(dev)) { 987 if (spin_trylock_bh(&hw_stats->stats_lock)) { 988 mtk_stats_update_mac(mac); 989 spin_unlock_bh(&hw_stats->stats_lock); 990 } 991 } 992 993 do { 994 start = u64_stats_fetch_begin(&hw_stats->syncp); 995 storage->rx_packets = hw_stats->rx_packets; 996 storage->tx_packets = hw_stats->tx_packets; 997 storage->rx_bytes = hw_stats->rx_bytes; 998 storage->tx_bytes = hw_stats->tx_bytes; 999 storage->collisions = hw_stats->tx_collisions; 1000 storage->rx_length_errors = hw_stats->rx_short_errors + 1001 hw_stats->rx_long_errors; 1002 storage->rx_over_errors = hw_stats->rx_overflow; 1003 storage->rx_crc_errors = hw_stats->rx_fcs_errors; 1004 storage->rx_errors = hw_stats->rx_checksum_errors; 1005 storage->tx_aborted_errors = hw_stats->tx_skip; 1006 } while (u64_stats_fetch_retry(&hw_stats->syncp, start)); 1007 1008 storage->tx_errors = dev->stats.tx_errors; 1009 storage->rx_dropped = dev->stats.rx_dropped; 1010 storage->tx_dropped = dev->stats.tx_dropped; 1011 } 1012 1013 static inline int mtk_max_frag_size(int mtu) 1014 { 1015 /* make sure buf_size will be at least MTK_MAX_RX_LENGTH */ 1016 if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH_2K) 1017 mtu = MTK_MAX_RX_LENGTH_2K - MTK_RX_ETH_HLEN; 1018 1019 return SKB_DATA_ALIGN(MTK_RX_HLEN + mtu) + 1020 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); 1021 } 1022 1023 static inline int mtk_max_buf_size(int frag_size) 1024 { 1025 int buf_size = frag_size - NET_SKB_PAD - NET_IP_ALIGN - 1026 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); 1027 1028 WARN_ON(buf_size < MTK_MAX_RX_LENGTH_2K); 1029 1030 return buf_size; 1031 } 1032 1033 static bool mtk_rx_get_desc(struct mtk_eth *eth, struct mtk_rx_dma_v2 *rxd, 1034 struct mtk_rx_dma_v2 *dma_rxd) 1035 { 1036 rxd->rxd2 = READ_ONCE(dma_rxd->rxd2); 1037 if (!(rxd->rxd2 & RX_DMA_DONE)) 1038 return false; 1039 1040 rxd->rxd1 = READ_ONCE(dma_rxd->rxd1); 1041 rxd->rxd3 = READ_ONCE(dma_rxd->rxd3); 1042 rxd->rxd4 = READ_ONCE(dma_rxd->rxd4); 1043 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { 1044 rxd->rxd5 = READ_ONCE(dma_rxd->rxd5); 1045 rxd->rxd6 = READ_ONCE(dma_rxd->rxd6); 1046 } 1047 1048 return true; 1049 } 1050 1051 static void *mtk_max_lro_buf_alloc(gfp_t gfp_mask) 1052 { 1053 unsigned int size = mtk_max_frag_size(MTK_MAX_LRO_RX_LENGTH); 1054 unsigned long data; 1055 1056 data = __get_free_pages(gfp_mask | __GFP_COMP | __GFP_NOWARN, 1057 get_order(size)); 1058 1059 return (void *)data; 1060 } 1061 1062 /* the qdma core needs scratch memory to be setup */ 1063 static int mtk_init_fq_dma(struct mtk_eth *eth) 1064 { 1065 const struct mtk_soc_data *soc = eth->soc; 1066 dma_addr_t phy_ring_tail; 1067 int cnt = MTK_QDMA_RING_SIZE; 1068 dma_addr_t dma_addr; 1069 int i; 1070 1071 eth->scratch_ring = dma_alloc_coherent(eth->dma_dev, 1072 cnt * soc->txrx.txd_size, 1073 ð->phy_scratch_ring, 1074 GFP_KERNEL); 1075 if (unlikely(!eth->scratch_ring)) 1076 return -ENOMEM; 1077 1078 eth->scratch_head = kcalloc(cnt, MTK_QDMA_PAGE_SIZE, GFP_KERNEL); 1079 if (unlikely(!eth->scratch_head)) 1080 return -ENOMEM; 1081 1082 dma_addr = dma_map_single(eth->dma_dev, 1083 eth->scratch_head, cnt * MTK_QDMA_PAGE_SIZE, 1084 DMA_FROM_DEVICE); 1085 if (unlikely(dma_mapping_error(eth->dma_dev, dma_addr))) 1086 return -ENOMEM; 1087 1088 phy_ring_tail = eth->phy_scratch_ring + soc->txrx.txd_size * (cnt - 1); 1089 1090 for (i = 0; i < cnt; i++) { 1091 struct mtk_tx_dma_v2 *txd; 1092 1093 txd = eth->scratch_ring + i * soc->txrx.txd_size; 1094 txd->txd1 = dma_addr + i * MTK_QDMA_PAGE_SIZE; 1095 if (i < cnt - 1) 1096 txd->txd2 = eth->phy_scratch_ring + 1097 (i + 1) * soc->txrx.txd_size; 1098 1099 txd->txd3 = TX_DMA_PLEN0(MTK_QDMA_PAGE_SIZE); 1100 txd->txd4 = 0; 1101 if (MTK_HAS_CAPS(soc->caps, MTK_NETSYS_V2)) { 1102 txd->txd5 = 0; 1103 txd->txd6 = 0; 1104 txd->txd7 = 0; 1105 txd->txd8 = 0; 1106 } 1107 } 1108 1109 mtk_w32(eth, eth->phy_scratch_ring, soc->reg_map->qdma.fq_head); 1110 mtk_w32(eth, phy_ring_tail, soc->reg_map->qdma.fq_tail); 1111 mtk_w32(eth, (cnt << 16) | cnt, soc->reg_map->qdma.fq_count); 1112 mtk_w32(eth, MTK_QDMA_PAGE_SIZE << 16, soc->reg_map->qdma.fq_blen); 1113 1114 return 0; 1115 } 1116 1117 static void *mtk_qdma_phys_to_virt(struct mtk_tx_ring *ring, u32 desc) 1118 { 1119 return ring->dma + (desc - ring->phys); 1120 } 1121 1122 static struct mtk_tx_buf *mtk_desc_to_tx_buf(struct mtk_tx_ring *ring, 1123 void *txd, u32 txd_size) 1124 { 1125 int idx = (txd - ring->dma) / txd_size; 1126 1127 return &ring->buf[idx]; 1128 } 1129 1130 static struct mtk_tx_dma *qdma_to_pdma(struct mtk_tx_ring *ring, 1131 struct mtk_tx_dma *dma) 1132 { 1133 return ring->dma_pdma - (struct mtk_tx_dma *)ring->dma + dma; 1134 } 1135 1136 static int txd_to_idx(struct mtk_tx_ring *ring, void *dma, u32 txd_size) 1137 { 1138 return (dma - ring->dma) / txd_size; 1139 } 1140 1141 static void mtk_tx_unmap(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf, 1142 struct xdp_frame_bulk *bq, bool napi) 1143 { 1144 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 1145 if (tx_buf->flags & MTK_TX_FLAGS_SINGLE0) { 1146 dma_unmap_single(eth->dma_dev, 1147 dma_unmap_addr(tx_buf, dma_addr0), 1148 dma_unmap_len(tx_buf, dma_len0), 1149 DMA_TO_DEVICE); 1150 } else if (tx_buf->flags & MTK_TX_FLAGS_PAGE0) { 1151 dma_unmap_page(eth->dma_dev, 1152 dma_unmap_addr(tx_buf, dma_addr0), 1153 dma_unmap_len(tx_buf, dma_len0), 1154 DMA_TO_DEVICE); 1155 } 1156 } else { 1157 if (dma_unmap_len(tx_buf, dma_len0)) { 1158 dma_unmap_page(eth->dma_dev, 1159 dma_unmap_addr(tx_buf, dma_addr0), 1160 dma_unmap_len(tx_buf, dma_len0), 1161 DMA_TO_DEVICE); 1162 } 1163 1164 if (dma_unmap_len(tx_buf, dma_len1)) { 1165 dma_unmap_page(eth->dma_dev, 1166 dma_unmap_addr(tx_buf, dma_addr1), 1167 dma_unmap_len(tx_buf, dma_len1), 1168 DMA_TO_DEVICE); 1169 } 1170 } 1171 1172 if (tx_buf->data && tx_buf->data != (void *)MTK_DMA_DUMMY_DESC) { 1173 if (tx_buf->type == MTK_TYPE_SKB) { 1174 struct sk_buff *skb = tx_buf->data; 1175 1176 if (napi) 1177 napi_consume_skb(skb, napi); 1178 else 1179 dev_kfree_skb_any(skb); 1180 } else { 1181 struct xdp_frame *xdpf = tx_buf->data; 1182 1183 if (napi && tx_buf->type == MTK_TYPE_XDP_TX) 1184 xdp_return_frame_rx_napi(xdpf); 1185 else if (bq) 1186 xdp_return_frame_bulk(xdpf, bq); 1187 else 1188 xdp_return_frame(xdpf); 1189 } 1190 } 1191 tx_buf->flags = 0; 1192 tx_buf->data = NULL; 1193 } 1194 1195 static void setup_tx_buf(struct mtk_eth *eth, struct mtk_tx_buf *tx_buf, 1196 struct mtk_tx_dma *txd, dma_addr_t mapped_addr, 1197 size_t size, int idx) 1198 { 1199 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 1200 dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr); 1201 dma_unmap_len_set(tx_buf, dma_len0, size); 1202 } else { 1203 if (idx & 1) { 1204 txd->txd3 = mapped_addr; 1205 txd->txd2 |= TX_DMA_PLEN1(size); 1206 dma_unmap_addr_set(tx_buf, dma_addr1, mapped_addr); 1207 dma_unmap_len_set(tx_buf, dma_len1, size); 1208 } else { 1209 tx_buf->data = (void *)MTK_DMA_DUMMY_DESC; 1210 txd->txd1 = mapped_addr; 1211 txd->txd2 = TX_DMA_PLEN0(size); 1212 dma_unmap_addr_set(tx_buf, dma_addr0, mapped_addr); 1213 dma_unmap_len_set(tx_buf, dma_len0, size); 1214 } 1215 } 1216 } 1217 1218 static void mtk_tx_set_dma_desc_v1(struct net_device *dev, void *txd, 1219 struct mtk_tx_dma_desc_info *info) 1220 { 1221 struct mtk_mac *mac = netdev_priv(dev); 1222 struct mtk_eth *eth = mac->hw; 1223 struct mtk_tx_dma *desc = txd; 1224 u32 data; 1225 1226 WRITE_ONCE(desc->txd1, info->addr); 1227 1228 data = TX_DMA_SWC | TX_DMA_PLEN0(info->size) | 1229 FIELD_PREP(TX_DMA_PQID, info->qid); 1230 if (info->last) 1231 data |= TX_DMA_LS0; 1232 WRITE_ONCE(desc->txd3, data); 1233 1234 data = (mac->id + 1) << TX_DMA_FPORT_SHIFT; /* forward port */ 1235 if (info->first) { 1236 if (info->gso) 1237 data |= TX_DMA_TSO; 1238 /* tx checksum offload */ 1239 if (info->csum) 1240 data |= TX_DMA_CHKSUM; 1241 /* vlan header offload */ 1242 if (info->vlan) 1243 data |= TX_DMA_INS_VLAN | info->vlan_tci; 1244 } 1245 WRITE_ONCE(desc->txd4, data); 1246 } 1247 1248 static void mtk_tx_set_dma_desc_v2(struct net_device *dev, void *txd, 1249 struct mtk_tx_dma_desc_info *info) 1250 { 1251 struct mtk_mac *mac = netdev_priv(dev); 1252 struct mtk_tx_dma_v2 *desc = txd; 1253 struct mtk_eth *eth = mac->hw; 1254 u32 data; 1255 1256 WRITE_ONCE(desc->txd1, info->addr); 1257 1258 data = TX_DMA_PLEN0(info->size); 1259 if (info->last) 1260 data |= TX_DMA_LS0; 1261 WRITE_ONCE(desc->txd3, data); 1262 1263 data = (mac->id + 1) << TX_DMA_FPORT_SHIFT_V2; /* forward port */ 1264 data |= TX_DMA_SWC_V2 | QID_BITS_V2(info->qid); 1265 WRITE_ONCE(desc->txd4, data); 1266 1267 data = 0; 1268 if (info->first) { 1269 if (info->gso) 1270 data |= TX_DMA_TSO_V2; 1271 /* tx checksum offload */ 1272 if (info->csum) 1273 data |= TX_DMA_CHKSUM_V2; 1274 } 1275 WRITE_ONCE(desc->txd5, data); 1276 1277 data = 0; 1278 if (info->first && info->vlan) 1279 data |= TX_DMA_INS_VLAN_V2 | info->vlan_tci; 1280 WRITE_ONCE(desc->txd6, data); 1281 1282 WRITE_ONCE(desc->txd7, 0); 1283 WRITE_ONCE(desc->txd8, 0); 1284 } 1285 1286 static void mtk_tx_set_dma_desc(struct net_device *dev, void *txd, 1287 struct mtk_tx_dma_desc_info *info) 1288 { 1289 struct mtk_mac *mac = netdev_priv(dev); 1290 struct mtk_eth *eth = mac->hw; 1291 1292 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) 1293 mtk_tx_set_dma_desc_v2(dev, txd, info); 1294 else 1295 mtk_tx_set_dma_desc_v1(dev, txd, info); 1296 } 1297 1298 static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev, 1299 int tx_num, struct mtk_tx_ring *ring, bool gso) 1300 { 1301 struct mtk_tx_dma_desc_info txd_info = { 1302 .size = skb_headlen(skb), 1303 .gso = gso, 1304 .csum = skb->ip_summed == CHECKSUM_PARTIAL, 1305 .vlan = skb_vlan_tag_present(skb), 1306 .qid = skb_get_queue_mapping(skb), 1307 .vlan_tci = skb_vlan_tag_get(skb), 1308 .first = true, 1309 .last = !skb_is_nonlinear(skb), 1310 }; 1311 struct netdev_queue *txq; 1312 struct mtk_mac *mac = netdev_priv(dev); 1313 struct mtk_eth *eth = mac->hw; 1314 const struct mtk_soc_data *soc = eth->soc; 1315 struct mtk_tx_dma *itxd, *txd; 1316 struct mtk_tx_dma *itxd_pdma, *txd_pdma; 1317 struct mtk_tx_buf *itx_buf, *tx_buf; 1318 int i, n_desc = 1; 1319 int queue = skb_get_queue_mapping(skb); 1320 int k = 0; 1321 1322 txq = netdev_get_tx_queue(dev, queue); 1323 itxd = ring->next_free; 1324 itxd_pdma = qdma_to_pdma(ring, itxd); 1325 if (itxd == ring->last_free) 1326 return -ENOMEM; 1327 1328 itx_buf = mtk_desc_to_tx_buf(ring, itxd, soc->txrx.txd_size); 1329 memset(itx_buf, 0, sizeof(*itx_buf)); 1330 1331 txd_info.addr = dma_map_single(eth->dma_dev, skb->data, txd_info.size, 1332 DMA_TO_DEVICE); 1333 if (unlikely(dma_mapping_error(eth->dma_dev, txd_info.addr))) 1334 return -ENOMEM; 1335 1336 mtk_tx_set_dma_desc(dev, itxd, &txd_info); 1337 1338 itx_buf->flags |= MTK_TX_FLAGS_SINGLE0; 1339 itx_buf->flags |= (!mac->id) ? MTK_TX_FLAGS_FPORT0 : 1340 MTK_TX_FLAGS_FPORT1; 1341 setup_tx_buf(eth, itx_buf, itxd_pdma, txd_info.addr, txd_info.size, 1342 k++); 1343 1344 /* TX SG offload */ 1345 txd = itxd; 1346 txd_pdma = qdma_to_pdma(ring, txd); 1347 1348 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 1349 skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 1350 unsigned int offset = 0; 1351 int frag_size = skb_frag_size(frag); 1352 1353 while (frag_size) { 1354 bool new_desc = true; 1355 1356 if (MTK_HAS_CAPS(soc->caps, MTK_QDMA) || 1357 (i & 0x1)) { 1358 txd = mtk_qdma_phys_to_virt(ring, txd->txd2); 1359 txd_pdma = qdma_to_pdma(ring, txd); 1360 if (txd == ring->last_free) 1361 goto err_dma; 1362 1363 n_desc++; 1364 } else { 1365 new_desc = false; 1366 } 1367 1368 memset(&txd_info, 0, sizeof(struct mtk_tx_dma_desc_info)); 1369 txd_info.size = min_t(unsigned int, frag_size, 1370 soc->txrx.dma_max_len); 1371 txd_info.qid = queue; 1372 txd_info.last = i == skb_shinfo(skb)->nr_frags - 1 && 1373 !(frag_size - txd_info.size); 1374 txd_info.addr = skb_frag_dma_map(eth->dma_dev, frag, 1375 offset, txd_info.size, 1376 DMA_TO_DEVICE); 1377 if (unlikely(dma_mapping_error(eth->dma_dev, txd_info.addr))) 1378 goto err_dma; 1379 1380 mtk_tx_set_dma_desc(dev, txd, &txd_info); 1381 1382 tx_buf = mtk_desc_to_tx_buf(ring, txd, 1383 soc->txrx.txd_size); 1384 if (new_desc) 1385 memset(tx_buf, 0, sizeof(*tx_buf)); 1386 tx_buf->data = (void *)MTK_DMA_DUMMY_DESC; 1387 tx_buf->flags |= MTK_TX_FLAGS_PAGE0; 1388 tx_buf->flags |= (!mac->id) ? MTK_TX_FLAGS_FPORT0 : 1389 MTK_TX_FLAGS_FPORT1; 1390 1391 setup_tx_buf(eth, tx_buf, txd_pdma, txd_info.addr, 1392 txd_info.size, k++); 1393 1394 frag_size -= txd_info.size; 1395 offset += txd_info.size; 1396 } 1397 } 1398 1399 /* store skb to cleanup */ 1400 itx_buf->type = MTK_TYPE_SKB; 1401 itx_buf->data = skb; 1402 1403 if (!MTK_HAS_CAPS(soc->caps, MTK_QDMA)) { 1404 if (k & 0x1) 1405 txd_pdma->txd2 |= TX_DMA_LS0; 1406 else 1407 txd_pdma->txd2 |= TX_DMA_LS1; 1408 } 1409 1410 netdev_tx_sent_queue(txq, skb->len); 1411 skb_tx_timestamp(skb); 1412 1413 ring->next_free = mtk_qdma_phys_to_virt(ring, txd->txd2); 1414 atomic_sub(n_desc, &ring->free_count); 1415 1416 /* make sure that all changes to the dma ring are flushed before we 1417 * continue 1418 */ 1419 wmb(); 1420 1421 if (MTK_HAS_CAPS(soc->caps, MTK_QDMA)) { 1422 if (netif_xmit_stopped(txq) || !netdev_xmit_more()) 1423 mtk_w32(eth, txd->txd2, soc->reg_map->qdma.ctx_ptr); 1424 } else { 1425 int next_idx; 1426 1427 next_idx = NEXT_DESP_IDX(txd_to_idx(ring, txd, soc->txrx.txd_size), 1428 ring->dma_size); 1429 mtk_w32(eth, next_idx, MT7628_TX_CTX_IDX0); 1430 } 1431 1432 return 0; 1433 1434 err_dma: 1435 do { 1436 tx_buf = mtk_desc_to_tx_buf(ring, itxd, soc->txrx.txd_size); 1437 1438 /* unmap dma */ 1439 mtk_tx_unmap(eth, tx_buf, NULL, false); 1440 1441 itxd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU; 1442 if (!MTK_HAS_CAPS(soc->caps, MTK_QDMA)) 1443 itxd_pdma->txd2 = TX_DMA_DESP2_DEF; 1444 1445 itxd = mtk_qdma_phys_to_virt(ring, itxd->txd2); 1446 itxd_pdma = qdma_to_pdma(ring, itxd); 1447 } while (itxd != txd); 1448 1449 return -ENOMEM; 1450 } 1451 1452 static int mtk_cal_txd_req(struct mtk_eth *eth, struct sk_buff *skb) 1453 { 1454 int i, nfrags = 1; 1455 skb_frag_t *frag; 1456 1457 if (skb_is_gso(skb)) { 1458 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 1459 frag = &skb_shinfo(skb)->frags[i]; 1460 nfrags += DIV_ROUND_UP(skb_frag_size(frag), 1461 eth->soc->txrx.dma_max_len); 1462 } 1463 } else { 1464 nfrags += skb_shinfo(skb)->nr_frags; 1465 } 1466 1467 return nfrags; 1468 } 1469 1470 static int mtk_queue_stopped(struct mtk_eth *eth) 1471 { 1472 int i; 1473 1474 for (i = 0; i < MTK_MAC_COUNT; i++) { 1475 if (!eth->netdev[i]) 1476 continue; 1477 if (netif_queue_stopped(eth->netdev[i])) 1478 return 1; 1479 } 1480 1481 return 0; 1482 } 1483 1484 static void mtk_wake_queue(struct mtk_eth *eth) 1485 { 1486 int i; 1487 1488 for (i = 0; i < MTK_MAC_COUNT; i++) { 1489 if (!eth->netdev[i]) 1490 continue; 1491 netif_tx_wake_all_queues(eth->netdev[i]); 1492 } 1493 } 1494 1495 static netdev_tx_t mtk_start_xmit(struct sk_buff *skb, struct net_device *dev) 1496 { 1497 struct mtk_mac *mac = netdev_priv(dev); 1498 struct mtk_eth *eth = mac->hw; 1499 struct mtk_tx_ring *ring = ð->tx_ring; 1500 struct net_device_stats *stats = &dev->stats; 1501 bool gso = false; 1502 int tx_num; 1503 1504 /* normally we can rely on the stack not calling this more than once, 1505 * however we have 2 queues running on the same ring so we need to lock 1506 * the ring access 1507 */ 1508 spin_lock(ð->page_lock); 1509 1510 if (unlikely(test_bit(MTK_RESETTING, ð->state))) 1511 goto drop; 1512 1513 tx_num = mtk_cal_txd_req(eth, skb); 1514 if (unlikely(atomic_read(&ring->free_count) <= tx_num)) { 1515 netif_tx_stop_all_queues(dev); 1516 netif_err(eth, tx_queued, dev, 1517 "Tx Ring full when queue awake!\n"); 1518 spin_unlock(ð->page_lock); 1519 return NETDEV_TX_BUSY; 1520 } 1521 1522 /* TSO: fill MSS info in tcp checksum field */ 1523 if (skb_is_gso(skb)) { 1524 if (skb_cow_head(skb, 0)) { 1525 netif_warn(eth, tx_err, dev, 1526 "GSO expand head fail.\n"); 1527 goto drop; 1528 } 1529 1530 if (skb_shinfo(skb)->gso_type & 1531 (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) { 1532 gso = true; 1533 tcp_hdr(skb)->check = htons(skb_shinfo(skb)->gso_size); 1534 } 1535 } 1536 1537 if (mtk_tx_map(skb, dev, tx_num, ring, gso) < 0) 1538 goto drop; 1539 1540 if (unlikely(atomic_read(&ring->free_count) <= ring->thresh)) 1541 netif_tx_stop_all_queues(dev); 1542 1543 spin_unlock(ð->page_lock); 1544 1545 return NETDEV_TX_OK; 1546 1547 drop: 1548 spin_unlock(ð->page_lock); 1549 stats->tx_dropped++; 1550 dev_kfree_skb_any(skb); 1551 return NETDEV_TX_OK; 1552 } 1553 1554 static struct mtk_rx_ring *mtk_get_rx_ring(struct mtk_eth *eth) 1555 { 1556 int i; 1557 struct mtk_rx_ring *ring; 1558 int idx; 1559 1560 if (!eth->hwlro) 1561 return ð->rx_ring[0]; 1562 1563 for (i = 0; i < MTK_MAX_RX_RING_NUM; i++) { 1564 struct mtk_rx_dma *rxd; 1565 1566 ring = ð->rx_ring[i]; 1567 idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size); 1568 rxd = ring->dma + idx * eth->soc->txrx.rxd_size; 1569 if (rxd->rxd2 & RX_DMA_DONE) { 1570 ring->calc_idx_update = true; 1571 return ring; 1572 } 1573 } 1574 1575 return NULL; 1576 } 1577 1578 static void mtk_update_rx_cpu_idx(struct mtk_eth *eth) 1579 { 1580 struct mtk_rx_ring *ring; 1581 int i; 1582 1583 if (!eth->hwlro) { 1584 ring = ð->rx_ring[0]; 1585 mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg); 1586 } else { 1587 for (i = 0; i < MTK_MAX_RX_RING_NUM; i++) { 1588 ring = ð->rx_ring[i]; 1589 if (ring->calc_idx_update) { 1590 ring->calc_idx_update = false; 1591 mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg); 1592 } 1593 } 1594 } 1595 } 1596 1597 static bool mtk_page_pool_enabled(struct mtk_eth *eth) 1598 { 1599 return MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2); 1600 } 1601 1602 static struct page_pool *mtk_create_page_pool(struct mtk_eth *eth, 1603 struct xdp_rxq_info *xdp_q, 1604 int id, int size) 1605 { 1606 struct page_pool_params pp_params = { 1607 .order = 0, 1608 .flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV, 1609 .pool_size = size, 1610 .nid = NUMA_NO_NODE, 1611 .dev = eth->dma_dev, 1612 .offset = MTK_PP_HEADROOM, 1613 .max_len = MTK_PP_MAX_BUF_SIZE, 1614 }; 1615 struct page_pool *pp; 1616 int err; 1617 1618 pp_params.dma_dir = rcu_access_pointer(eth->prog) ? DMA_BIDIRECTIONAL 1619 : DMA_FROM_DEVICE; 1620 pp = page_pool_create(&pp_params); 1621 if (IS_ERR(pp)) 1622 return pp; 1623 1624 err = __xdp_rxq_info_reg(xdp_q, ð->dummy_dev, id, 1625 eth->rx_napi.napi_id, PAGE_SIZE); 1626 if (err < 0) 1627 goto err_free_pp; 1628 1629 err = xdp_rxq_info_reg_mem_model(xdp_q, MEM_TYPE_PAGE_POOL, pp); 1630 if (err) 1631 goto err_unregister_rxq; 1632 1633 return pp; 1634 1635 err_unregister_rxq: 1636 xdp_rxq_info_unreg(xdp_q); 1637 err_free_pp: 1638 page_pool_destroy(pp); 1639 1640 return ERR_PTR(err); 1641 } 1642 1643 static void *mtk_page_pool_get_buff(struct page_pool *pp, dma_addr_t *dma_addr, 1644 gfp_t gfp_mask) 1645 { 1646 struct page *page; 1647 1648 page = page_pool_alloc_pages(pp, gfp_mask | __GFP_NOWARN); 1649 if (!page) 1650 return NULL; 1651 1652 *dma_addr = page_pool_get_dma_addr(page) + MTK_PP_HEADROOM; 1653 return page_address(page); 1654 } 1655 1656 static void mtk_rx_put_buff(struct mtk_rx_ring *ring, void *data, bool napi) 1657 { 1658 if (ring->page_pool) 1659 page_pool_put_full_page(ring->page_pool, 1660 virt_to_head_page(data), napi); 1661 else 1662 skb_free_frag(data); 1663 } 1664 1665 static int mtk_xdp_frame_map(struct mtk_eth *eth, struct net_device *dev, 1666 struct mtk_tx_dma_desc_info *txd_info, 1667 struct mtk_tx_dma *txd, struct mtk_tx_buf *tx_buf, 1668 void *data, u16 headroom, int index, bool dma_map) 1669 { 1670 struct mtk_tx_ring *ring = ð->tx_ring; 1671 struct mtk_mac *mac = netdev_priv(dev); 1672 struct mtk_tx_dma *txd_pdma; 1673 1674 if (dma_map) { /* ndo_xdp_xmit */ 1675 txd_info->addr = dma_map_single(eth->dma_dev, data, 1676 txd_info->size, DMA_TO_DEVICE); 1677 if (unlikely(dma_mapping_error(eth->dma_dev, txd_info->addr))) 1678 return -ENOMEM; 1679 1680 tx_buf->flags |= MTK_TX_FLAGS_SINGLE0; 1681 } else { 1682 struct page *page = virt_to_head_page(data); 1683 1684 txd_info->addr = page_pool_get_dma_addr(page) + 1685 sizeof(struct xdp_frame) + headroom; 1686 dma_sync_single_for_device(eth->dma_dev, txd_info->addr, 1687 txd_info->size, DMA_BIDIRECTIONAL); 1688 } 1689 mtk_tx_set_dma_desc(dev, txd, txd_info); 1690 1691 tx_buf->flags |= !mac->id ? MTK_TX_FLAGS_FPORT0 : MTK_TX_FLAGS_FPORT1; 1692 tx_buf->type = dma_map ? MTK_TYPE_XDP_NDO : MTK_TYPE_XDP_TX; 1693 tx_buf->data = (void *)MTK_DMA_DUMMY_DESC; 1694 1695 txd_pdma = qdma_to_pdma(ring, txd); 1696 setup_tx_buf(eth, tx_buf, txd_pdma, txd_info->addr, txd_info->size, 1697 index); 1698 1699 return 0; 1700 } 1701 1702 static int mtk_xdp_submit_frame(struct mtk_eth *eth, struct xdp_frame *xdpf, 1703 struct net_device *dev, bool dma_map) 1704 { 1705 struct skb_shared_info *sinfo = xdp_get_shared_info_from_frame(xdpf); 1706 const struct mtk_soc_data *soc = eth->soc; 1707 struct mtk_tx_ring *ring = ð->tx_ring; 1708 struct mtk_mac *mac = netdev_priv(dev); 1709 struct mtk_tx_dma_desc_info txd_info = { 1710 .size = xdpf->len, 1711 .first = true, 1712 .last = !xdp_frame_has_frags(xdpf), 1713 .qid = mac->id, 1714 }; 1715 int err, index = 0, n_desc = 1, nr_frags; 1716 struct mtk_tx_buf *htx_buf, *tx_buf; 1717 struct mtk_tx_dma *htxd, *txd; 1718 void *data = xdpf->data; 1719 1720 if (unlikely(test_bit(MTK_RESETTING, ð->state))) 1721 return -EBUSY; 1722 1723 nr_frags = unlikely(xdp_frame_has_frags(xdpf)) ? sinfo->nr_frags : 0; 1724 if (unlikely(atomic_read(&ring->free_count) <= 1 + nr_frags)) 1725 return -EBUSY; 1726 1727 spin_lock(ð->page_lock); 1728 1729 txd = ring->next_free; 1730 if (txd == ring->last_free) { 1731 spin_unlock(ð->page_lock); 1732 return -ENOMEM; 1733 } 1734 htxd = txd; 1735 1736 tx_buf = mtk_desc_to_tx_buf(ring, txd, soc->txrx.txd_size); 1737 memset(tx_buf, 0, sizeof(*tx_buf)); 1738 htx_buf = tx_buf; 1739 1740 for (;;) { 1741 err = mtk_xdp_frame_map(eth, dev, &txd_info, txd, tx_buf, 1742 data, xdpf->headroom, index, dma_map); 1743 if (err < 0) 1744 goto unmap; 1745 1746 if (txd_info.last) 1747 break; 1748 1749 if (MTK_HAS_CAPS(soc->caps, MTK_QDMA) || (index & 0x1)) { 1750 txd = mtk_qdma_phys_to_virt(ring, txd->txd2); 1751 if (txd == ring->last_free) 1752 goto unmap; 1753 1754 tx_buf = mtk_desc_to_tx_buf(ring, txd, 1755 soc->txrx.txd_size); 1756 memset(tx_buf, 0, sizeof(*tx_buf)); 1757 n_desc++; 1758 } 1759 1760 memset(&txd_info, 0, sizeof(struct mtk_tx_dma_desc_info)); 1761 txd_info.size = skb_frag_size(&sinfo->frags[index]); 1762 txd_info.last = index + 1 == nr_frags; 1763 txd_info.qid = mac->id; 1764 data = skb_frag_address(&sinfo->frags[index]); 1765 1766 index++; 1767 } 1768 /* store xdpf for cleanup */ 1769 htx_buf->data = xdpf; 1770 1771 if (!MTK_HAS_CAPS(soc->caps, MTK_QDMA)) { 1772 struct mtk_tx_dma *txd_pdma = qdma_to_pdma(ring, txd); 1773 1774 if (index & 1) 1775 txd_pdma->txd2 |= TX_DMA_LS0; 1776 else 1777 txd_pdma->txd2 |= TX_DMA_LS1; 1778 } 1779 1780 ring->next_free = mtk_qdma_phys_to_virt(ring, txd->txd2); 1781 atomic_sub(n_desc, &ring->free_count); 1782 1783 /* make sure that all changes to the dma ring are flushed before we 1784 * continue 1785 */ 1786 wmb(); 1787 1788 if (MTK_HAS_CAPS(soc->caps, MTK_QDMA)) { 1789 mtk_w32(eth, txd->txd2, soc->reg_map->qdma.ctx_ptr); 1790 } else { 1791 int idx; 1792 1793 idx = txd_to_idx(ring, txd, soc->txrx.txd_size); 1794 mtk_w32(eth, NEXT_DESP_IDX(idx, ring->dma_size), 1795 MT7628_TX_CTX_IDX0); 1796 } 1797 1798 spin_unlock(ð->page_lock); 1799 1800 return 0; 1801 1802 unmap: 1803 while (htxd != txd) { 1804 tx_buf = mtk_desc_to_tx_buf(ring, htxd, soc->txrx.txd_size); 1805 mtk_tx_unmap(eth, tx_buf, NULL, false); 1806 1807 htxd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU; 1808 if (!MTK_HAS_CAPS(soc->caps, MTK_QDMA)) { 1809 struct mtk_tx_dma *txd_pdma = qdma_to_pdma(ring, htxd); 1810 1811 txd_pdma->txd2 = TX_DMA_DESP2_DEF; 1812 } 1813 1814 htxd = mtk_qdma_phys_to_virt(ring, htxd->txd2); 1815 } 1816 1817 spin_unlock(ð->page_lock); 1818 1819 return err; 1820 } 1821 1822 static int mtk_xdp_xmit(struct net_device *dev, int num_frame, 1823 struct xdp_frame **frames, u32 flags) 1824 { 1825 struct mtk_mac *mac = netdev_priv(dev); 1826 struct mtk_hw_stats *hw_stats = mac->hw_stats; 1827 struct mtk_eth *eth = mac->hw; 1828 int i, nxmit = 0; 1829 1830 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) 1831 return -EINVAL; 1832 1833 for (i = 0; i < num_frame; i++) { 1834 if (mtk_xdp_submit_frame(eth, frames[i], dev, true)) 1835 break; 1836 nxmit++; 1837 } 1838 1839 u64_stats_update_begin(&hw_stats->syncp); 1840 hw_stats->xdp_stats.tx_xdp_xmit += nxmit; 1841 hw_stats->xdp_stats.tx_xdp_xmit_errors += num_frame - nxmit; 1842 u64_stats_update_end(&hw_stats->syncp); 1843 1844 return nxmit; 1845 } 1846 1847 static u32 mtk_xdp_run(struct mtk_eth *eth, struct mtk_rx_ring *ring, 1848 struct xdp_buff *xdp, struct net_device *dev) 1849 { 1850 struct mtk_mac *mac = netdev_priv(dev); 1851 struct mtk_hw_stats *hw_stats = mac->hw_stats; 1852 u64 *count = &hw_stats->xdp_stats.rx_xdp_drop; 1853 struct bpf_prog *prog; 1854 u32 act = XDP_PASS; 1855 1856 rcu_read_lock(); 1857 1858 prog = rcu_dereference(eth->prog); 1859 if (!prog) 1860 goto out; 1861 1862 act = bpf_prog_run_xdp(prog, xdp); 1863 switch (act) { 1864 case XDP_PASS: 1865 count = &hw_stats->xdp_stats.rx_xdp_pass; 1866 goto update_stats; 1867 case XDP_REDIRECT: 1868 if (unlikely(xdp_do_redirect(dev, xdp, prog))) { 1869 act = XDP_DROP; 1870 break; 1871 } 1872 1873 count = &hw_stats->xdp_stats.rx_xdp_redirect; 1874 goto update_stats; 1875 case XDP_TX: { 1876 struct xdp_frame *xdpf = xdp_convert_buff_to_frame(xdp); 1877 1878 if (!xdpf || mtk_xdp_submit_frame(eth, xdpf, dev, false)) { 1879 count = &hw_stats->xdp_stats.rx_xdp_tx_errors; 1880 act = XDP_DROP; 1881 break; 1882 } 1883 1884 count = &hw_stats->xdp_stats.rx_xdp_tx; 1885 goto update_stats; 1886 } 1887 default: 1888 bpf_warn_invalid_xdp_action(dev, prog, act); 1889 fallthrough; 1890 case XDP_ABORTED: 1891 trace_xdp_exception(dev, prog, act); 1892 fallthrough; 1893 case XDP_DROP: 1894 break; 1895 } 1896 1897 page_pool_put_full_page(ring->page_pool, 1898 virt_to_head_page(xdp->data), true); 1899 1900 update_stats: 1901 u64_stats_update_begin(&hw_stats->syncp); 1902 *count = *count + 1; 1903 u64_stats_update_end(&hw_stats->syncp); 1904 out: 1905 rcu_read_unlock(); 1906 1907 return act; 1908 } 1909 1910 static int mtk_poll_rx(struct napi_struct *napi, int budget, 1911 struct mtk_eth *eth) 1912 { 1913 struct dim_sample dim_sample = {}; 1914 struct mtk_rx_ring *ring; 1915 bool xdp_flush = false; 1916 int idx; 1917 struct sk_buff *skb; 1918 u8 *data, *new_data; 1919 struct mtk_rx_dma_v2 *rxd, trxd; 1920 int done = 0, bytes = 0; 1921 1922 while (done < budget) { 1923 unsigned int pktlen, *rxdcsum; 1924 bool has_hwaccel_tag = false; 1925 struct net_device *netdev; 1926 u16 vlan_proto, vlan_tci; 1927 dma_addr_t dma_addr; 1928 u32 hash, reason; 1929 int mac = 0; 1930 1931 ring = mtk_get_rx_ring(eth); 1932 if (unlikely(!ring)) 1933 goto rx_done; 1934 1935 idx = NEXT_DESP_IDX(ring->calc_idx, ring->dma_size); 1936 rxd = ring->dma + idx * eth->soc->txrx.rxd_size; 1937 data = ring->data[idx]; 1938 1939 if (!mtk_rx_get_desc(eth, &trxd, rxd)) 1940 break; 1941 1942 /* find out which mac the packet come from. values start at 1 */ 1943 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) 1944 mac = RX_DMA_GET_SPORT_V2(trxd.rxd5) - 1; 1945 else if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628) && 1946 !(trxd.rxd4 & RX_DMA_SPECIAL_TAG)) 1947 mac = RX_DMA_GET_SPORT(trxd.rxd4) - 1; 1948 1949 if (unlikely(mac < 0 || mac >= MTK_MAC_COUNT || 1950 !eth->netdev[mac])) 1951 goto release_desc; 1952 1953 netdev = eth->netdev[mac]; 1954 1955 if (unlikely(test_bit(MTK_RESETTING, ð->state))) 1956 goto release_desc; 1957 1958 pktlen = RX_DMA_GET_PLEN0(trxd.rxd2); 1959 1960 /* alloc new buffer */ 1961 if (ring->page_pool) { 1962 struct page *page = virt_to_head_page(data); 1963 struct xdp_buff xdp; 1964 u32 ret; 1965 1966 new_data = mtk_page_pool_get_buff(ring->page_pool, 1967 &dma_addr, 1968 GFP_ATOMIC); 1969 if (unlikely(!new_data)) { 1970 netdev->stats.rx_dropped++; 1971 goto release_desc; 1972 } 1973 1974 dma_sync_single_for_cpu(eth->dma_dev, 1975 page_pool_get_dma_addr(page) + MTK_PP_HEADROOM, 1976 pktlen, page_pool_get_dma_dir(ring->page_pool)); 1977 1978 xdp_init_buff(&xdp, PAGE_SIZE, &ring->xdp_q); 1979 xdp_prepare_buff(&xdp, data, MTK_PP_HEADROOM, pktlen, 1980 false); 1981 xdp_buff_clear_frags_flag(&xdp); 1982 1983 ret = mtk_xdp_run(eth, ring, &xdp, netdev); 1984 if (ret == XDP_REDIRECT) 1985 xdp_flush = true; 1986 1987 if (ret != XDP_PASS) 1988 goto skip_rx; 1989 1990 skb = build_skb(data, PAGE_SIZE); 1991 if (unlikely(!skb)) { 1992 page_pool_put_full_page(ring->page_pool, 1993 page, true); 1994 netdev->stats.rx_dropped++; 1995 goto skip_rx; 1996 } 1997 1998 skb_reserve(skb, xdp.data - xdp.data_hard_start); 1999 skb_put(skb, xdp.data_end - xdp.data); 2000 skb_mark_for_recycle(skb); 2001 } else { 2002 if (ring->frag_size <= PAGE_SIZE) 2003 new_data = napi_alloc_frag(ring->frag_size); 2004 else 2005 new_data = mtk_max_lro_buf_alloc(GFP_ATOMIC); 2006 2007 if (unlikely(!new_data)) { 2008 netdev->stats.rx_dropped++; 2009 goto release_desc; 2010 } 2011 2012 dma_addr = dma_map_single(eth->dma_dev, 2013 new_data + NET_SKB_PAD + eth->ip_align, 2014 ring->buf_size, DMA_FROM_DEVICE); 2015 if (unlikely(dma_mapping_error(eth->dma_dev, 2016 dma_addr))) { 2017 skb_free_frag(new_data); 2018 netdev->stats.rx_dropped++; 2019 goto release_desc; 2020 } 2021 2022 dma_unmap_single(eth->dma_dev, trxd.rxd1, 2023 ring->buf_size, DMA_FROM_DEVICE); 2024 2025 skb = build_skb(data, ring->frag_size); 2026 if (unlikely(!skb)) { 2027 netdev->stats.rx_dropped++; 2028 skb_free_frag(data); 2029 goto skip_rx; 2030 } 2031 2032 skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN); 2033 skb_put(skb, pktlen); 2034 } 2035 2036 skb->dev = netdev; 2037 bytes += skb->len; 2038 2039 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { 2040 reason = FIELD_GET(MTK_RXD5_PPE_CPU_REASON, trxd.rxd5); 2041 hash = trxd.rxd5 & MTK_RXD5_FOE_ENTRY; 2042 if (hash != MTK_RXD5_FOE_ENTRY) 2043 skb_set_hash(skb, jhash_1word(hash, 0), 2044 PKT_HASH_TYPE_L4); 2045 rxdcsum = &trxd.rxd3; 2046 } else { 2047 reason = FIELD_GET(MTK_RXD4_PPE_CPU_REASON, trxd.rxd4); 2048 hash = trxd.rxd4 & MTK_RXD4_FOE_ENTRY; 2049 if (hash != MTK_RXD4_FOE_ENTRY) 2050 skb_set_hash(skb, jhash_1word(hash, 0), 2051 PKT_HASH_TYPE_L4); 2052 rxdcsum = &trxd.rxd4; 2053 } 2054 2055 if (*rxdcsum & eth->soc->txrx.rx_dma_l4_valid) 2056 skb->ip_summed = CHECKSUM_UNNECESSARY; 2057 else 2058 skb_checksum_none_assert(skb); 2059 skb->protocol = eth_type_trans(skb, netdev); 2060 2061 if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) { 2062 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { 2063 if (trxd.rxd3 & RX_DMA_VTAG_V2) { 2064 vlan_proto = RX_DMA_VPID(trxd.rxd4); 2065 vlan_tci = RX_DMA_VID(trxd.rxd4); 2066 has_hwaccel_tag = true; 2067 } 2068 } else if (trxd.rxd2 & RX_DMA_VTAG) { 2069 vlan_proto = RX_DMA_VPID(trxd.rxd3); 2070 vlan_tci = RX_DMA_VID(trxd.rxd3); 2071 has_hwaccel_tag = true; 2072 } 2073 } 2074 2075 /* When using VLAN untagging in combination with DSA, the 2076 * hardware treats the MTK special tag as a VLAN and untags it. 2077 */ 2078 if (has_hwaccel_tag && netdev_uses_dsa(netdev)) { 2079 unsigned int port = vlan_proto & GENMASK(2, 0); 2080 2081 if (port < ARRAY_SIZE(eth->dsa_meta) && 2082 eth->dsa_meta[port]) 2083 skb_dst_set_noref(skb, ð->dsa_meta[port]->dst); 2084 } else if (has_hwaccel_tag) { 2085 __vlan_hwaccel_put_tag(skb, htons(vlan_proto), vlan_tci); 2086 } 2087 2088 if (reason == MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED) 2089 mtk_ppe_check_skb(eth->ppe[0], skb, hash); 2090 2091 skb_record_rx_queue(skb, 0); 2092 napi_gro_receive(napi, skb); 2093 2094 skip_rx: 2095 ring->data[idx] = new_data; 2096 rxd->rxd1 = (unsigned int)dma_addr; 2097 release_desc: 2098 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) 2099 rxd->rxd2 = RX_DMA_LSO; 2100 else 2101 rxd->rxd2 = RX_DMA_PREP_PLEN0(ring->buf_size); 2102 2103 ring->calc_idx = idx; 2104 done++; 2105 } 2106 2107 rx_done: 2108 if (done) { 2109 /* make sure that all changes to the dma ring are flushed before 2110 * we continue 2111 */ 2112 wmb(); 2113 mtk_update_rx_cpu_idx(eth); 2114 } 2115 2116 eth->rx_packets += done; 2117 eth->rx_bytes += bytes; 2118 dim_update_sample(eth->rx_events, eth->rx_packets, eth->rx_bytes, 2119 &dim_sample); 2120 net_dim(ð->rx_dim, dim_sample); 2121 2122 if (xdp_flush) 2123 xdp_do_flush_map(); 2124 2125 return done; 2126 } 2127 2128 struct mtk_poll_state { 2129 struct netdev_queue *txq; 2130 unsigned int total; 2131 unsigned int done; 2132 unsigned int bytes; 2133 }; 2134 2135 static void 2136 mtk_poll_tx_done(struct mtk_eth *eth, struct mtk_poll_state *state, u8 mac, 2137 struct sk_buff *skb) 2138 { 2139 struct netdev_queue *txq; 2140 struct net_device *dev; 2141 unsigned int bytes = skb->len; 2142 2143 state->total++; 2144 eth->tx_packets++; 2145 eth->tx_bytes += bytes; 2146 2147 dev = eth->netdev[mac]; 2148 if (!dev) 2149 return; 2150 2151 txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb)); 2152 if (state->txq == txq) { 2153 state->done++; 2154 state->bytes += bytes; 2155 return; 2156 } 2157 2158 if (state->txq) 2159 netdev_tx_completed_queue(state->txq, state->done, state->bytes); 2160 2161 state->txq = txq; 2162 state->done = 1; 2163 state->bytes = bytes; 2164 } 2165 2166 static int mtk_poll_tx_qdma(struct mtk_eth *eth, int budget, 2167 struct mtk_poll_state *state) 2168 { 2169 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 2170 struct mtk_tx_ring *ring = ð->tx_ring; 2171 struct mtk_tx_buf *tx_buf; 2172 struct xdp_frame_bulk bq; 2173 struct mtk_tx_dma *desc; 2174 u32 cpu, dma; 2175 2176 cpu = ring->last_free_ptr; 2177 dma = mtk_r32(eth, reg_map->qdma.drx_ptr); 2178 2179 desc = mtk_qdma_phys_to_virt(ring, cpu); 2180 xdp_frame_bulk_init(&bq); 2181 2182 while ((cpu != dma) && budget) { 2183 u32 next_cpu = desc->txd2; 2184 int mac = 0; 2185 2186 desc = mtk_qdma_phys_to_virt(ring, desc->txd2); 2187 if ((desc->txd3 & TX_DMA_OWNER_CPU) == 0) 2188 break; 2189 2190 tx_buf = mtk_desc_to_tx_buf(ring, desc, 2191 eth->soc->txrx.txd_size); 2192 if (tx_buf->flags & MTK_TX_FLAGS_FPORT1) 2193 mac = 1; 2194 2195 if (!tx_buf->data) 2196 break; 2197 2198 if (tx_buf->data != (void *)MTK_DMA_DUMMY_DESC) { 2199 if (tx_buf->type == MTK_TYPE_SKB) 2200 mtk_poll_tx_done(eth, state, mac, tx_buf->data); 2201 2202 budget--; 2203 } 2204 mtk_tx_unmap(eth, tx_buf, &bq, true); 2205 2206 ring->last_free = desc; 2207 atomic_inc(&ring->free_count); 2208 2209 cpu = next_cpu; 2210 } 2211 xdp_flush_frame_bulk(&bq); 2212 2213 ring->last_free_ptr = cpu; 2214 mtk_w32(eth, cpu, reg_map->qdma.crx_ptr); 2215 2216 return budget; 2217 } 2218 2219 static int mtk_poll_tx_pdma(struct mtk_eth *eth, int budget, 2220 struct mtk_poll_state *state) 2221 { 2222 struct mtk_tx_ring *ring = ð->tx_ring; 2223 struct mtk_tx_buf *tx_buf; 2224 struct xdp_frame_bulk bq; 2225 struct mtk_tx_dma *desc; 2226 u32 cpu, dma; 2227 2228 cpu = ring->cpu_idx; 2229 dma = mtk_r32(eth, MT7628_TX_DTX_IDX0); 2230 xdp_frame_bulk_init(&bq); 2231 2232 while ((cpu != dma) && budget) { 2233 tx_buf = &ring->buf[cpu]; 2234 if (!tx_buf->data) 2235 break; 2236 2237 if (tx_buf->data != (void *)MTK_DMA_DUMMY_DESC) { 2238 if (tx_buf->type == MTK_TYPE_SKB) 2239 mtk_poll_tx_done(eth, state, 0, tx_buf->data); 2240 budget--; 2241 } 2242 mtk_tx_unmap(eth, tx_buf, &bq, true); 2243 2244 desc = ring->dma + cpu * eth->soc->txrx.txd_size; 2245 ring->last_free = desc; 2246 atomic_inc(&ring->free_count); 2247 2248 cpu = NEXT_DESP_IDX(cpu, ring->dma_size); 2249 } 2250 xdp_flush_frame_bulk(&bq); 2251 2252 ring->cpu_idx = cpu; 2253 2254 return budget; 2255 } 2256 2257 static int mtk_poll_tx(struct mtk_eth *eth, int budget) 2258 { 2259 struct mtk_tx_ring *ring = ð->tx_ring; 2260 struct dim_sample dim_sample = {}; 2261 struct mtk_poll_state state = {}; 2262 2263 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 2264 budget = mtk_poll_tx_qdma(eth, budget, &state); 2265 else 2266 budget = mtk_poll_tx_pdma(eth, budget, &state); 2267 2268 if (state.txq) 2269 netdev_tx_completed_queue(state.txq, state.done, state.bytes); 2270 2271 dim_update_sample(eth->tx_events, eth->tx_packets, eth->tx_bytes, 2272 &dim_sample); 2273 net_dim(ð->tx_dim, dim_sample); 2274 2275 if (mtk_queue_stopped(eth) && 2276 (atomic_read(&ring->free_count) > ring->thresh)) 2277 mtk_wake_queue(eth); 2278 2279 return state.total; 2280 } 2281 2282 static void mtk_handle_status_irq(struct mtk_eth *eth) 2283 { 2284 u32 status2 = mtk_r32(eth, MTK_INT_STATUS2); 2285 2286 if (unlikely(status2 & (MTK_GDM1_AF | MTK_GDM2_AF))) { 2287 mtk_stats_update(eth); 2288 mtk_w32(eth, (MTK_GDM1_AF | MTK_GDM2_AF), 2289 MTK_INT_STATUS2); 2290 } 2291 } 2292 2293 static int mtk_napi_tx(struct napi_struct *napi, int budget) 2294 { 2295 struct mtk_eth *eth = container_of(napi, struct mtk_eth, tx_napi); 2296 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 2297 int tx_done = 0; 2298 2299 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 2300 mtk_handle_status_irq(eth); 2301 mtk_w32(eth, MTK_TX_DONE_INT, reg_map->tx_irq_status); 2302 tx_done = mtk_poll_tx(eth, budget); 2303 2304 if (unlikely(netif_msg_intr(eth))) { 2305 dev_info(eth->dev, 2306 "done tx %d, intr 0x%08x/0x%x\n", tx_done, 2307 mtk_r32(eth, reg_map->tx_irq_status), 2308 mtk_r32(eth, reg_map->tx_irq_mask)); 2309 } 2310 2311 if (tx_done == budget) 2312 return budget; 2313 2314 if (mtk_r32(eth, reg_map->tx_irq_status) & MTK_TX_DONE_INT) 2315 return budget; 2316 2317 if (napi_complete_done(napi, tx_done)) 2318 mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); 2319 2320 return tx_done; 2321 } 2322 2323 static int mtk_napi_rx(struct napi_struct *napi, int budget) 2324 { 2325 struct mtk_eth *eth = container_of(napi, struct mtk_eth, rx_napi); 2326 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 2327 int rx_done_total = 0; 2328 2329 mtk_handle_status_irq(eth); 2330 2331 do { 2332 int rx_done; 2333 2334 mtk_w32(eth, eth->soc->txrx.rx_irq_done_mask, 2335 reg_map->pdma.irq_status); 2336 rx_done = mtk_poll_rx(napi, budget - rx_done_total, eth); 2337 rx_done_total += rx_done; 2338 2339 if (unlikely(netif_msg_intr(eth))) { 2340 dev_info(eth->dev, 2341 "done rx %d, intr 0x%08x/0x%x\n", rx_done, 2342 mtk_r32(eth, reg_map->pdma.irq_status), 2343 mtk_r32(eth, reg_map->pdma.irq_mask)); 2344 } 2345 2346 if (rx_done_total == budget) 2347 return budget; 2348 2349 } while (mtk_r32(eth, reg_map->pdma.irq_status) & 2350 eth->soc->txrx.rx_irq_done_mask); 2351 2352 if (napi_complete_done(napi, rx_done_total)) 2353 mtk_rx_irq_enable(eth, eth->soc->txrx.rx_irq_done_mask); 2354 2355 return rx_done_total; 2356 } 2357 2358 static int mtk_tx_alloc(struct mtk_eth *eth) 2359 { 2360 const struct mtk_soc_data *soc = eth->soc; 2361 struct mtk_tx_ring *ring = ð->tx_ring; 2362 int i, sz = soc->txrx.txd_size; 2363 struct mtk_tx_dma_v2 *txd; 2364 int ring_size; 2365 u32 ofs, val; 2366 2367 if (MTK_HAS_CAPS(soc->caps, MTK_QDMA)) 2368 ring_size = MTK_QDMA_RING_SIZE; 2369 else 2370 ring_size = MTK_DMA_SIZE; 2371 2372 ring->buf = kcalloc(ring_size, sizeof(*ring->buf), 2373 GFP_KERNEL); 2374 if (!ring->buf) 2375 goto no_tx_mem; 2376 2377 ring->dma = dma_alloc_coherent(eth->dma_dev, ring_size * sz, 2378 &ring->phys, GFP_KERNEL); 2379 if (!ring->dma) 2380 goto no_tx_mem; 2381 2382 for (i = 0; i < ring_size; i++) { 2383 int next = (i + 1) % ring_size; 2384 u32 next_ptr = ring->phys + next * sz; 2385 2386 txd = ring->dma + i * sz; 2387 txd->txd2 = next_ptr; 2388 txd->txd3 = TX_DMA_LS0 | TX_DMA_OWNER_CPU; 2389 txd->txd4 = 0; 2390 if (MTK_HAS_CAPS(soc->caps, MTK_NETSYS_V2)) { 2391 txd->txd5 = 0; 2392 txd->txd6 = 0; 2393 txd->txd7 = 0; 2394 txd->txd8 = 0; 2395 } 2396 } 2397 2398 /* On MT7688 (PDMA only) this driver uses the ring->dma structs 2399 * only as the framework. The real HW descriptors are the PDMA 2400 * descriptors in ring->dma_pdma. 2401 */ 2402 if (!MTK_HAS_CAPS(soc->caps, MTK_QDMA)) { 2403 ring->dma_pdma = dma_alloc_coherent(eth->dma_dev, ring_size * sz, 2404 &ring->phys_pdma, GFP_KERNEL); 2405 if (!ring->dma_pdma) 2406 goto no_tx_mem; 2407 2408 for (i = 0; i < ring_size; i++) { 2409 ring->dma_pdma[i].txd2 = TX_DMA_DESP2_DEF; 2410 ring->dma_pdma[i].txd4 = 0; 2411 } 2412 } 2413 2414 ring->dma_size = ring_size; 2415 atomic_set(&ring->free_count, ring_size - 2); 2416 ring->next_free = ring->dma; 2417 ring->last_free = (void *)txd; 2418 ring->last_free_ptr = (u32)(ring->phys + ((ring_size - 1) * sz)); 2419 ring->thresh = MAX_SKB_FRAGS; 2420 2421 /* make sure that all changes to the dma ring are flushed before we 2422 * continue 2423 */ 2424 wmb(); 2425 2426 if (MTK_HAS_CAPS(soc->caps, MTK_QDMA)) { 2427 mtk_w32(eth, ring->phys, soc->reg_map->qdma.ctx_ptr); 2428 mtk_w32(eth, ring->phys, soc->reg_map->qdma.dtx_ptr); 2429 mtk_w32(eth, 2430 ring->phys + ((ring_size - 1) * sz), 2431 soc->reg_map->qdma.crx_ptr); 2432 mtk_w32(eth, ring->last_free_ptr, soc->reg_map->qdma.drx_ptr); 2433 2434 for (i = 0, ofs = 0; i < MTK_QDMA_NUM_QUEUES; i++) { 2435 val = (QDMA_RES_THRES << 8) | QDMA_RES_THRES; 2436 mtk_w32(eth, val, soc->reg_map->qdma.qtx_cfg + ofs); 2437 2438 val = MTK_QTX_SCH_MIN_RATE_EN | 2439 /* minimum: 10 Mbps */ 2440 FIELD_PREP(MTK_QTX_SCH_MIN_RATE_MAN, 1) | 2441 FIELD_PREP(MTK_QTX_SCH_MIN_RATE_EXP, 4) | 2442 MTK_QTX_SCH_LEAKY_BUCKET_SIZE; 2443 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) 2444 val |= MTK_QTX_SCH_LEAKY_BUCKET_EN; 2445 mtk_w32(eth, val, soc->reg_map->qdma.qtx_sch + ofs); 2446 ofs += MTK_QTX_OFFSET; 2447 } 2448 val = MTK_QDMA_TX_SCH_MAX_WFQ | (MTK_QDMA_TX_SCH_MAX_WFQ << 16); 2449 mtk_w32(eth, val, soc->reg_map->qdma.tx_sch_rate); 2450 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) 2451 mtk_w32(eth, val, soc->reg_map->qdma.tx_sch_rate + 4); 2452 } else { 2453 mtk_w32(eth, ring->phys_pdma, MT7628_TX_BASE_PTR0); 2454 mtk_w32(eth, ring_size, MT7628_TX_MAX_CNT0); 2455 mtk_w32(eth, 0, MT7628_TX_CTX_IDX0); 2456 mtk_w32(eth, MT7628_PST_DTX_IDX0, soc->reg_map->pdma.rst_idx); 2457 } 2458 2459 return 0; 2460 2461 no_tx_mem: 2462 return -ENOMEM; 2463 } 2464 2465 static void mtk_tx_clean(struct mtk_eth *eth) 2466 { 2467 const struct mtk_soc_data *soc = eth->soc; 2468 struct mtk_tx_ring *ring = ð->tx_ring; 2469 int i; 2470 2471 if (ring->buf) { 2472 for (i = 0; i < ring->dma_size; i++) 2473 mtk_tx_unmap(eth, &ring->buf[i], NULL, false); 2474 kfree(ring->buf); 2475 ring->buf = NULL; 2476 } 2477 2478 if (ring->dma) { 2479 dma_free_coherent(eth->dma_dev, 2480 ring->dma_size * soc->txrx.txd_size, 2481 ring->dma, ring->phys); 2482 ring->dma = NULL; 2483 } 2484 2485 if (ring->dma_pdma) { 2486 dma_free_coherent(eth->dma_dev, 2487 ring->dma_size * soc->txrx.txd_size, 2488 ring->dma_pdma, ring->phys_pdma); 2489 ring->dma_pdma = NULL; 2490 } 2491 } 2492 2493 static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag) 2494 { 2495 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 2496 struct mtk_rx_ring *ring; 2497 int rx_data_len, rx_dma_size; 2498 int i; 2499 2500 if (rx_flag == MTK_RX_FLAGS_QDMA) { 2501 if (ring_no) 2502 return -EINVAL; 2503 ring = ð->rx_ring_qdma; 2504 } else { 2505 ring = ð->rx_ring[ring_no]; 2506 } 2507 2508 if (rx_flag == MTK_RX_FLAGS_HWLRO) { 2509 rx_data_len = MTK_MAX_LRO_RX_LENGTH; 2510 rx_dma_size = MTK_HW_LRO_DMA_SIZE; 2511 } else { 2512 rx_data_len = ETH_DATA_LEN; 2513 rx_dma_size = MTK_DMA_SIZE; 2514 } 2515 2516 ring->frag_size = mtk_max_frag_size(rx_data_len); 2517 ring->buf_size = mtk_max_buf_size(ring->frag_size); 2518 ring->data = kcalloc(rx_dma_size, sizeof(*ring->data), 2519 GFP_KERNEL); 2520 if (!ring->data) 2521 return -ENOMEM; 2522 2523 if (mtk_page_pool_enabled(eth)) { 2524 struct page_pool *pp; 2525 2526 pp = mtk_create_page_pool(eth, &ring->xdp_q, ring_no, 2527 rx_dma_size); 2528 if (IS_ERR(pp)) 2529 return PTR_ERR(pp); 2530 2531 ring->page_pool = pp; 2532 } 2533 2534 ring->dma = dma_alloc_coherent(eth->dma_dev, 2535 rx_dma_size * eth->soc->txrx.rxd_size, 2536 &ring->phys, GFP_KERNEL); 2537 if (!ring->dma) 2538 return -ENOMEM; 2539 2540 for (i = 0; i < rx_dma_size; i++) { 2541 struct mtk_rx_dma_v2 *rxd; 2542 dma_addr_t dma_addr; 2543 void *data; 2544 2545 rxd = ring->dma + i * eth->soc->txrx.rxd_size; 2546 if (ring->page_pool) { 2547 data = mtk_page_pool_get_buff(ring->page_pool, 2548 &dma_addr, GFP_KERNEL); 2549 if (!data) 2550 return -ENOMEM; 2551 } else { 2552 if (ring->frag_size <= PAGE_SIZE) 2553 data = netdev_alloc_frag(ring->frag_size); 2554 else 2555 data = mtk_max_lro_buf_alloc(GFP_KERNEL); 2556 2557 if (!data) 2558 return -ENOMEM; 2559 2560 dma_addr = dma_map_single(eth->dma_dev, 2561 data + NET_SKB_PAD + eth->ip_align, 2562 ring->buf_size, DMA_FROM_DEVICE); 2563 if (unlikely(dma_mapping_error(eth->dma_dev, 2564 dma_addr))) { 2565 skb_free_frag(data); 2566 return -ENOMEM; 2567 } 2568 } 2569 rxd->rxd1 = (unsigned int)dma_addr; 2570 ring->data[i] = data; 2571 2572 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) 2573 rxd->rxd2 = RX_DMA_LSO; 2574 else 2575 rxd->rxd2 = RX_DMA_PREP_PLEN0(ring->buf_size); 2576 2577 rxd->rxd3 = 0; 2578 rxd->rxd4 = 0; 2579 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { 2580 rxd->rxd5 = 0; 2581 rxd->rxd6 = 0; 2582 rxd->rxd7 = 0; 2583 rxd->rxd8 = 0; 2584 } 2585 } 2586 2587 ring->dma_size = rx_dma_size; 2588 ring->calc_idx_update = false; 2589 ring->calc_idx = rx_dma_size - 1; 2590 if (rx_flag == MTK_RX_FLAGS_QDMA) 2591 ring->crx_idx_reg = reg_map->qdma.qcrx_ptr + 2592 ring_no * MTK_QRX_OFFSET; 2593 else 2594 ring->crx_idx_reg = reg_map->pdma.pcrx_ptr + 2595 ring_no * MTK_QRX_OFFSET; 2596 /* make sure that all changes to the dma ring are flushed before we 2597 * continue 2598 */ 2599 wmb(); 2600 2601 if (rx_flag == MTK_RX_FLAGS_QDMA) { 2602 mtk_w32(eth, ring->phys, 2603 reg_map->qdma.rx_ptr + ring_no * MTK_QRX_OFFSET); 2604 mtk_w32(eth, rx_dma_size, 2605 reg_map->qdma.rx_cnt_cfg + ring_no * MTK_QRX_OFFSET); 2606 mtk_w32(eth, MTK_PST_DRX_IDX_CFG(ring_no), 2607 reg_map->qdma.rst_idx); 2608 } else { 2609 mtk_w32(eth, ring->phys, 2610 reg_map->pdma.rx_ptr + ring_no * MTK_QRX_OFFSET); 2611 mtk_w32(eth, rx_dma_size, 2612 reg_map->pdma.rx_cnt_cfg + ring_no * MTK_QRX_OFFSET); 2613 mtk_w32(eth, MTK_PST_DRX_IDX_CFG(ring_no), 2614 reg_map->pdma.rst_idx); 2615 } 2616 mtk_w32(eth, ring->calc_idx, ring->crx_idx_reg); 2617 2618 return 0; 2619 } 2620 2621 static void mtk_rx_clean(struct mtk_eth *eth, struct mtk_rx_ring *ring) 2622 { 2623 int i; 2624 2625 if (ring->data && ring->dma) { 2626 for (i = 0; i < ring->dma_size; i++) { 2627 struct mtk_rx_dma *rxd; 2628 2629 if (!ring->data[i]) 2630 continue; 2631 2632 rxd = ring->dma + i * eth->soc->txrx.rxd_size; 2633 if (!rxd->rxd1) 2634 continue; 2635 2636 dma_unmap_single(eth->dma_dev, rxd->rxd1, 2637 ring->buf_size, DMA_FROM_DEVICE); 2638 mtk_rx_put_buff(ring, ring->data[i], false); 2639 } 2640 kfree(ring->data); 2641 ring->data = NULL; 2642 } 2643 2644 if (ring->dma) { 2645 dma_free_coherent(eth->dma_dev, 2646 ring->dma_size * eth->soc->txrx.rxd_size, 2647 ring->dma, ring->phys); 2648 ring->dma = NULL; 2649 } 2650 2651 if (ring->page_pool) { 2652 if (xdp_rxq_info_is_reg(&ring->xdp_q)) 2653 xdp_rxq_info_unreg(&ring->xdp_q); 2654 page_pool_destroy(ring->page_pool); 2655 ring->page_pool = NULL; 2656 } 2657 } 2658 2659 static int mtk_hwlro_rx_init(struct mtk_eth *eth) 2660 { 2661 int i; 2662 u32 ring_ctrl_dw1 = 0, ring_ctrl_dw2 = 0, ring_ctrl_dw3 = 0; 2663 u32 lro_ctrl_dw0 = 0, lro_ctrl_dw3 = 0; 2664 2665 /* set LRO rings to auto-learn modes */ 2666 ring_ctrl_dw2 |= MTK_RING_AUTO_LERAN_MODE; 2667 2668 /* validate LRO ring */ 2669 ring_ctrl_dw2 |= MTK_RING_VLD; 2670 2671 /* set AGE timer (unit: 20us) */ 2672 ring_ctrl_dw2 |= MTK_RING_AGE_TIME_H; 2673 ring_ctrl_dw1 |= MTK_RING_AGE_TIME_L; 2674 2675 /* set max AGG timer (unit: 20us) */ 2676 ring_ctrl_dw2 |= MTK_RING_MAX_AGG_TIME; 2677 2678 /* set max LRO AGG count */ 2679 ring_ctrl_dw2 |= MTK_RING_MAX_AGG_CNT_L; 2680 ring_ctrl_dw3 |= MTK_RING_MAX_AGG_CNT_H; 2681 2682 for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) { 2683 mtk_w32(eth, ring_ctrl_dw1, MTK_LRO_CTRL_DW1_CFG(i)); 2684 mtk_w32(eth, ring_ctrl_dw2, MTK_LRO_CTRL_DW2_CFG(i)); 2685 mtk_w32(eth, ring_ctrl_dw3, MTK_LRO_CTRL_DW3_CFG(i)); 2686 } 2687 2688 /* IPv4 checksum update enable */ 2689 lro_ctrl_dw0 |= MTK_L3_CKS_UPD_EN; 2690 2691 /* switch priority comparison to packet count mode */ 2692 lro_ctrl_dw0 |= MTK_LRO_ALT_PKT_CNT_MODE; 2693 2694 /* bandwidth threshold setting */ 2695 mtk_w32(eth, MTK_HW_LRO_BW_THRE, MTK_PDMA_LRO_CTRL_DW2); 2696 2697 /* auto-learn score delta setting */ 2698 mtk_w32(eth, MTK_HW_LRO_REPLACE_DELTA, MTK_PDMA_LRO_ALT_SCORE_DELTA); 2699 2700 /* set refresh timer for altering flows to 1 sec. (unit: 20us) */ 2701 mtk_w32(eth, (MTK_HW_LRO_TIMER_UNIT << 16) | MTK_HW_LRO_REFRESH_TIME, 2702 MTK_PDMA_LRO_ALT_REFRESH_TIMER); 2703 2704 /* set HW LRO mode & the max aggregation count for rx packets */ 2705 lro_ctrl_dw3 |= MTK_ADMA_MODE | (MTK_HW_LRO_MAX_AGG_CNT & 0xff); 2706 2707 /* the minimal remaining room of SDL0 in RXD for lro aggregation */ 2708 lro_ctrl_dw3 |= MTK_LRO_MIN_RXD_SDL; 2709 2710 /* enable HW LRO */ 2711 lro_ctrl_dw0 |= MTK_LRO_EN; 2712 2713 mtk_w32(eth, lro_ctrl_dw3, MTK_PDMA_LRO_CTRL_DW3); 2714 mtk_w32(eth, lro_ctrl_dw0, MTK_PDMA_LRO_CTRL_DW0); 2715 2716 return 0; 2717 } 2718 2719 static void mtk_hwlro_rx_uninit(struct mtk_eth *eth) 2720 { 2721 int i; 2722 u32 val; 2723 2724 /* relinquish lro rings, flush aggregated packets */ 2725 mtk_w32(eth, MTK_LRO_RING_RELINQUISH_REQ, MTK_PDMA_LRO_CTRL_DW0); 2726 2727 /* wait for relinquishments done */ 2728 for (i = 0; i < 10; i++) { 2729 val = mtk_r32(eth, MTK_PDMA_LRO_CTRL_DW0); 2730 if (val & MTK_LRO_RING_RELINQUISH_DONE) { 2731 msleep(20); 2732 continue; 2733 } 2734 break; 2735 } 2736 2737 /* invalidate lro rings */ 2738 for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) 2739 mtk_w32(eth, 0, MTK_LRO_CTRL_DW2_CFG(i)); 2740 2741 /* disable HW LRO */ 2742 mtk_w32(eth, 0, MTK_PDMA_LRO_CTRL_DW0); 2743 } 2744 2745 static void mtk_hwlro_val_ipaddr(struct mtk_eth *eth, int idx, __be32 ip) 2746 { 2747 u32 reg_val; 2748 2749 reg_val = mtk_r32(eth, MTK_LRO_CTRL_DW2_CFG(idx)); 2750 2751 /* invalidate the IP setting */ 2752 mtk_w32(eth, (reg_val & ~MTK_RING_MYIP_VLD), MTK_LRO_CTRL_DW2_CFG(idx)); 2753 2754 mtk_w32(eth, ip, MTK_LRO_DIP_DW0_CFG(idx)); 2755 2756 /* validate the IP setting */ 2757 mtk_w32(eth, (reg_val | MTK_RING_MYIP_VLD), MTK_LRO_CTRL_DW2_CFG(idx)); 2758 } 2759 2760 static void mtk_hwlro_inval_ipaddr(struct mtk_eth *eth, int idx) 2761 { 2762 u32 reg_val; 2763 2764 reg_val = mtk_r32(eth, MTK_LRO_CTRL_DW2_CFG(idx)); 2765 2766 /* invalidate the IP setting */ 2767 mtk_w32(eth, (reg_val & ~MTK_RING_MYIP_VLD), MTK_LRO_CTRL_DW2_CFG(idx)); 2768 2769 mtk_w32(eth, 0, MTK_LRO_DIP_DW0_CFG(idx)); 2770 } 2771 2772 static int mtk_hwlro_get_ip_cnt(struct mtk_mac *mac) 2773 { 2774 int cnt = 0; 2775 int i; 2776 2777 for (i = 0; i < MTK_MAX_LRO_IP_CNT; i++) { 2778 if (mac->hwlro_ip[i]) 2779 cnt++; 2780 } 2781 2782 return cnt; 2783 } 2784 2785 static int mtk_hwlro_add_ipaddr(struct net_device *dev, 2786 struct ethtool_rxnfc *cmd) 2787 { 2788 struct ethtool_rx_flow_spec *fsp = 2789 (struct ethtool_rx_flow_spec *)&cmd->fs; 2790 struct mtk_mac *mac = netdev_priv(dev); 2791 struct mtk_eth *eth = mac->hw; 2792 int hwlro_idx; 2793 2794 if ((fsp->flow_type != TCP_V4_FLOW) || 2795 (!fsp->h_u.tcp_ip4_spec.ip4dst) || 2796 (fsp->location > 1)) 2797 return -EINVAL; 2798 2799 mac->hwlro_ip[fsp->location] = htonl(fsp->h_u.tcp_ip4_spec.ip4dst); 2800 hwlro_idx = (mac->id * MTK_MAX_LRO_IP_CNT) + fsp->location; 2801 2802 mac->hwlro_ip_cnt = mtk_hwlro_get_ip_cnt(mac); 2803 2804 mtk_hwlro_val_ipaddr(eth, hwlro_idx, mac->hwlro_ip[fsp->location]); 2805 2806 return 0; 2807 } 2808 2809 static int mtk_hwlro_del_ipaddr(struct net_device *dev, 2810 struct ethtool_rxnfc *cmd) 2811 { 2812 struct ethtool_rx_flow_spec *fsp = 2813 (struct ethtool_rx_flow_spec *)&cmd->fs; 2814 struct mtk_mac *mac = netdev_priv(dev); 2815 struct mtk_eth *eth = mac->hw; 2816 int hwlro_idx; 2817 2818 if (fsp->location > 1) 2819 return -EINVAL; 2820 2821 mac->hwlro_ip[fsp->location] = 0; 2822 hwlro_idx = (mac->id * MTK_MAX_LRO_IP_CNT) + fsp->location; 2823 2824 mac->hwlro_ip_cnt = mtk_hwlro_get_ip_cnt(mac); 2825 2826 mtk_hwlro_inval_ipaddr(eth, hwlro_idx); 2827 2828 return 0; 2829 } 2830 2831 static void mtk_hwlro_netdev_disable(struct net_device *dev) 2832 { 2833 struct mtk_mac *mac = netdev_priv(dev); 2834 struct mtk_eth *eth = mac->hw; 2835 int i, hwlro_idx; 2836 2837 for (i = 0; i < MTK_MAX_LRO_IP_CNT; i++) { 2838 mac->hwlro_ip[i] = 0; 2839 hwlro_idx = (mac->id * MTK_MAX_LRO_IP_CNT) + i; 2840 2841 mtk_hwlro_inval_ipaddr(eth, hwlro_idx); 2842 } 2843 2844 mac->hwlro_ip_cnt = 0; 2845 } 2846 2847 static int mtk_hwlro_get_fdir_entry(struct net_device *dev, 2848 struct ethtool_rxnfc *cmd) 2849 { 2850 struct mtk_mac *mac = netdev_priv(dev); 2851 struct ethtool_rx_flow_spec *fsp = 2852 (struct ethtool_rx_flow_spec *)&cmd->fs; 2853 2854 if (fsp->location >= ARRAY_SIZE(mac->hwlro_ip)) 2855 return -EINVAL; 2856 2857 /* only tcp dst ipv4 is meaningful, others are meaningless */ 2858 fsp->flow_type = TCP_V4_FLOW; 2859 fsp->h_u.tcp_ip4_spec.ip4dst = ntohl(mac->hwlro_ip[fsp->location]); 2860 fsp->m_u.tcp_ip4_spec.ip4dst = 0; 2861 2862 fsp->h_u.tcp_ip4_spec.ip4src = 0; 2863 fsp->m_u.tcp_ip4_spec.ip4src = 0xffffffff; 2864 fsp->h_u.tcp_ip4_spec.psrc = 0; 2865 fsp->m_u.tcp_ip4_spec.psrc = 0xffff; 2866 fsp->h_u.tcp_ip4_spec.pdst = 0; 2867 fsp->m_u.tcp_ip4_spec.pdst = 0xffff; 2868 fsp->h_u.tcp_ip4_spec.tos = 0; 2869 fsp->m_u.tcp_ip4_spec.tos = 0xff; 2870 2871 return 0; 2872 } 2873 2874 static int mtk_hwlro_get_fdir_all(struct net_device *dev, 2875 struct ethtool_rxnfc *cmd, 2876 u32 *rule_locs) 2877 { 2878 struct mtk_mac *mac = netdev_priv(dev); 2879 int cnt = 0; 2880 int i; 2881 2882 for (i = 0; i < MTK_MAX_LRO_IP_CNT; i++) { 2883 if (mac->hwlro_ip[i]) { 2884 rule_locs[cnt] = i; 2885 cnt++; 2886 } 2887 } 2888 2889 cmd->rule_cnt = cnt; 2890 2891 return 0; 2892 } 2893 2894 static netdev_features_t mtk_fix_features(struct net_device *dev, 2895 netdev_features_t features) 2896 { 2897 if (!(features & NETIF_F_LRO)) { 2898 struct mtk_mac *mac = netdev_priv(dev); 2899 int ip_cnt = mtk_hwlro_get_ip_cnt(mac); 2900 2901 if (ip_cnt) { 2902 netdev_info(dev, "RX flow is programmed, LRO should keep on\n"); 2903 2904 features |= NETIF_F_LRO; 2905 } 2906 } 2907 2908 return features; 2909 } 2910 2911 static int mtk_set_features(struct net_device *dev, netdev_features_t features) 2912 { 2913 struct mtk_mac *mac = netdev_priv(dev); 2914 struct mtk_eth *eth = mac->hw; 2915 netdev_features_t diff = dev->features ^ features; 2916 int i; 2917 2918 if ((diff & NETIF_F_LRO) && !(features & NETIF_F_LRO)) 2919 mtk_hwlro_netdev_disable(dev); 2920 2921 /* Set RX VLAN offloading */ 2922 if (!(diff & NETIF_F_HW_VLAN_CTAG_RX)) 2923 return 0; 2924 2925 mtk_w32(eth, !!(features & NETIF_F_HW_VLAN_CTAG_RX), 2926 MTK_CDMP_EG_CTRL); 2927 2928 /* sync features with other MAC */ 2929 for (i = 0; i < MTK_MAC_COUNT; i++) { 2930 if (!eth->netdev[i] || eth->netdev[i] == dev) 2931 continue; 2932 eth->netdev[i]->features &= ~NETIF_F_HW_VLAN_CTAG_RX; 2933 eth->netdev[i]->features |= features & NETIF_F_HW_VLAN_CTAG_RX; 2934 } 2935 2936 return 0; 2937 } 2938 2939 /* wait for DMA to finish whatever it is doing before we start using it again */ 2940 static int mtk_dma_busy_wait(struct mtk_eth *eth) 2941 { 2942 unsigned int reg; 2943 int ret; 2944 u32 val; 2945 2946 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 2947 reg = eth->soc->reg_map->qdma.glo_cfg; 2948 else 2949 reg = eth->soc->reg_map->pdma.glo_cfg; 2950 2951 ret = readx_poll_timeout_atomic(__raw_readl, eth->base + reg, val, 2952 !(val & (MTK_RX_DMA_BUSY | MTK_TX_DMA_BUSY)), 2953 5, MTK_DMA_BUSY_TIMEOUT_US); 2954 if (ret) 2955 dev_err(eth->dev, "DMA init timeout\n"); 2956 2957 return ret; 2958 } 2959 2960 static int mtk_dma_init(struct mtk_eth *eth) 2961 { 2962 int err; 2963 u32 i; 2964 2965 if (mtk_dma_busy_wait(eth)) 2966 return -EBUSY; 2967 2968 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 2969 /* QDMA needs scratch memory for internal reordering of the 2970 * descriptors 2971 */ 2972 err = mtk_init_fq_dma(eth); 2973 if (err) 2974 return err; 2975 } 2976 2977 err = mtk_tx_alloc(eth); 2978 if (err) 2979 return err; 2980 2981 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 2982 err = mtk_rx_alloc(eth, 0, MTK_RX_FLAGS_QDMA); 2983 if (err) 2984 return err; 2985 } 2986 2987 err = mtk_rx_alloc(eth, 0, MTK_RX_FLAGS_NORMAL); 2988 if (err) 2989 return err; 2990 2991 if (eth->hwlro) { 2992 for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) { 2993 err = mtk_rx_alloc(eth, i, MTK_RX_FLAGS_HWLRO); 2994 if (err) 2995 return err; 2996 } 2997 err = mtk_hwlro_rx_init(eth); 2998 if (err) 2999 return err; 3000 } 3001 3002 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 3003 /* Enable random early drop and set drop threshold 3004 * automatically 3005 */ 3006 mtk_w32(eth, FC_THRES_DROP_MODE | FC_THRES_DROP_EN | 3007 FC_THRES_MIN, eth->soc->reg_map->qdma.fc_th); 3008 mtk_w32(eth, 0x0, eth->soc->reg_map->qdma.hred); 3009 } 3010 3011 return 0; 3012 } 3013 3014 static void mtk_dma_free(struct mtk_eth *eth) 3015 { 3016 const struct mtk_soc_data *soc = eth->soc; 3017 int i; 3018 3019 for (i = 0; i < MTK_MAC_COUNT; i++) 3020 if (eth->netdev[i]) 3021 netdev_reset_queue(eth->netdev[i]); 3022 if (eth->scratch_ring) { 3023 dma_free_coherent(eth->dma_dev, 3024 MTK_QDMA_RING_SIZE * soc->txrx.txd_size, 3025 eth->scratch_ring, eth->phy_scratch_ring); 3026 eth->scratch_ring = NULL; 3027 eth->phy_scratch_ring = 0; 3028 } 3029 mtk_tx_clean(eth); 3030 mtk_rx_clean(eth, ð->rx_ring[0]); 3031 mtk_rx_clean(eth, ð->rx_ring_qdma); 3032 3033 if (eth->hwlro) { 3034 mtk_hwlro_rx_uninit(eth); 3035 for (i = 1; i < MTK_MAX_RX_RING_NUM; i++) 3036 mtk_rx_clean(eth, ð->rx_ring[i]); 3037 } 3038 3039 kfree(eth->scratch_head); 3040 } 3041 3042 static bool mtk_hw_reset_check(struct mtk_eth *eth) 3043 { 3044 u32 val = mtk_r32(eth, MTK_INT_STATUS2); 3045 3046 return (val & MTK_FE_INT_FQ_EMPTY) || (val & MTK_FE_INT_RFIFO_UF) || 3047 (val & MTK_FE_INT_RFIFO_OV) || (val & MTK_FE_INT_TSO_FAIL) || 3048 (val & MTK_FE_INT_TSO_ALIGN) || (val & MTK_FE_INT_TSO_ILLEGAL); 3049 } 3050 3051 static void mtk_tx_timeout(struct net_device *dev, unsigned int txqueue) 3052 { 3053 struct mtk_mac *mac = netdev_priv(dev); 3054 struct mtk_eth *eth = mac->hw; 3055 3056 if (test_bit(MTK_RESETTING, ð->state)) 3057 return; 3058 3059 if (!mtk_hw_reset_check(eth)) 3060 return; 3061 3062 eth->netdev[mac->id]->stats.tx_errors++; 3063 netif_err(eth, tx_err, dev, "transmit timed out\n"); 3064 3065 schedule_work(ð->pending_work); 3066 } 3067 3068 static irqreturn_t mtk_handle_irq_rx(int irq, void *_eth) 3069 { 3070 struct mtk_eth *eth = _eth; 3071 3072 eth->rx_events++; 3073 if (likely(napi_schedule_prep(ð->rx_napi))) { 3074 __napi_schedule(ð->rx_napi); 3075 mtk_rx_irq_disable(eth, eth->soc->txrx.rx_irq_done_mask); 3076 } 3077 3078 return IRQ_HANDLED; 3079 } 3080 3081 static irqreturn_t mtk_handle_irq_tx(int irq, void *_eth) 3082 { 3083 struct mtk_eth *eth = _eth; 3084 3085 eth->tx_events++; 3086 if (likely(napi_schedule_prep(ð->tx_napi))) { 3087 __napi_schedule(ð->tx_napi); 3088 mtk_tx_irq_disable(eth, MTK_TX_DONE_INT); 3089 } 3090 3091 return IRQ_HANDLED; 3092 } 3093 3094 static irqreturn_t mtk_handle_irq(int irq, void *_eth) 3095 { 3096 struct mtk_eth *eth = _eth; 3097 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 3098 3099 if (mtk_r32(eth, reg_map->pdma.irq_mask) & 3100 eth->soc->txrx.rx_irq_done_mask) { 3101 if (mtk_r32(eth, reg_map->pdma.irq_status) & 3102 eth->soc->txrx.rx_irq_done_mask) 3103 mtk_handle_irq_rx(irq, _eth); 3104 } 3105 if (mtk_r32(eth, reg_map->tx_irq_mask) & MTK_TX_DONE_INT) { 3106 if (mtk_r32(eth, reg_map->tx_irq_status) & MTK_TX_DONE_INT) 3107 mtk_handle_irq_tx(irq, _eth); 3108 } 3109 3110 return IRQ_HANDLED; 3111 } 3112 3113 #ifdef CONFIG_NET_POLL_CONTROLLER 3114 static void mtk_poll_controller(struct net_device *dev) 3115 { 3116 struct mtk_mac *mac = netdev_priv(dev); 3117 struct mtk_eth *eth = mac->hw; 3118 3119 mtk_tx_irq_disable(eth, MTK_TX_DONE_INT); 3120 mtk_rx_irq_disable(eth, eth->soc->txrx.rx_irq_done_mask); 3121 mtk_handle_irq_rx(eth->irq[2], dev); 3122 mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); 3123 mtk_rx_irq_enable(eth, eth->soc->txrx.rx_irq_done_mask); 3124 } 3125 #endif 3126 3127 static int mtk_start_dma(struct mtk_eth *eth) 3128 { 3129 u32 val, rx_2b_offset = (NET_IP_ALIGN == 2) ? MTK_RX_2B_OFFSET : 0; 3130 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 3131 int err; 3132 3133 err = mtk_dma_init(eth); 3134 if (err) { 3135 mtk_dma_free(eth); 3136 return err; 3137 } 3138 3139 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 3140 val = mtk_r32(eth, reg_map->qdma.glo_cfg); 3141 val |= MTK_TX_DMA_EN | MTK_RX_DMA_EN | 3142 MTK_TX_BT_32DWORDS | MTK_NDP_CO_PRO | 3143 MTK_RX_2B_OFFSET | MTK_TX_WB_DDONE; 3144 3145 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) 3146 val |= MTK_MUTLI_CNT | MTK_RESV_BUF | 3147 MTK_WCOMP_EN | MTK_DMAD_WR_WDONE | 3148 MTK_CHK_DDONE_EN | MTK_LEAKY_BUCKET_EN; 3149 else 3150 val |= MTK_RX_BT_32DWORDS; 3151 mtk_w32(eth, val, reg_map->qdma.glo_cfg); 3152 3153 mtk_w32(eth, 3154 MTK_RX_DMA_EN | rx_2b_offset | 3155 MTK_RX_BT_32DWORDS | MTK_MULTI_EN, 3156 reg_map->pdma.glo_cfg); 3157 } else { 3158 mtk_w32(eth, MTK_TX_WB_DDONE | MTK_TX_DMA_EN | MTK_RX_DMA_EN | 3159 MTK_MULTI_EN | MTK_PDMA_SIZE_8DWORDS, 3160 reg_map->pdma.glo_cfg); 3161 } 3162 3163 return 0; 3164 } 3165 3166 static void mtk_gdm_config(struct mtk_eth *eth, u32 config) 3167 { 3168 int i; 3169 3170 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) 3171 return; 3172 3173 for (i = 0; i < MTK_MAC_COUNT; i++) { 3174 u32 val = mtk_r32(eth, MTK_GDMA_FWD_CFG(i)); 3175 3176 /* default setup the forward port to send frame to PDMA */ 3177 val &= ~0xffff; 3178 3179 /* Enable RX checksum */ 3180 val |= MTK_GDMA_ICS_EN | MTK_GDMA_TCS_EN | MTK_GDMA_UCS_EN; 3181 3182 val |= config; 3183 3184 if (eth->netdev[i] && netdev_uses_dsa(eth->netdev[i])) 3185 val |= MTK_GDMA_SPECIAL_TAG; 3186 3187 mtk_w32(eth, val, MTK_GDMA_FWD_CFG(i)); 3188 } 3189 /* Reset and enable PSE */ 3190 mtk_w32(eth, RST_GL_PSE, MTK_RST_GL); 3191 mtk_w32(eth, 0, MTK_RST_GL); 3192 } 3193 3194 3195 static bool mtk_uses_dsa(struct net_device *dev) 3196 { 3197 #if IS_ENABLED(CONFIG_NET_DSA) 3198 return netdev_uses_dsa(dev) && 3199 dev->dsa_ptr->tag_ops->proto == DSA_TAG_PROTO_MTK; 3200 #else 3201 return false; 3202 #endif 3203 } 3204 3205 static int mtk_device_event(struct notifier_block *n, unsigned long event, void *ptr) 3206 { 3207 struct mtk_mac *mac = container_of(n, struct mtk_mac, device_notifier); 3208 struct mtk_eth *eth = mac->hw; 3209 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 3210 struct ethtool_link_ksettings s; 3211 struct net_device *ldev; 3212 struct list_head *iter; 3213 struct dsa_port *dp; 3214 3215 if (event != NETDEV_CHANGE) 3216 return NOTIFY_DONE; 3217 3218 netdev_for_each_lower_dev(dev, ldev, iter) { 3219 if (netdev_priv(ldev) == mac) 3220 goto found; 3221 } 3222 3223 return NOTIFY_DONE; 3224 3225 found: 3226 if (!dsa_slave_dev_check(dev)) 3227 return NOTIFY_DONE; 3228 3229 if (__ethtool_get_link_ksettings(dev, &s)) 3230 return NOTIFY_DONE; 3231 3232 if (s.base.speed == 0 || s.base.speed == ((__u32)-1)) 3233 return NOTIFY_DONE; 3234 3235 dp = dsa_port_from_netdev(dev); 3236 if (dp->index >= MTK_QDMA_NUM_QUEUES) 3237 return NOTIFY_DONE; 3238 3239 if (mac->speed > 0 && mac->speed <= s.base.speed) 3240 s.base.speed = 0; 3241 3242 mtk_set_queue_speed(eth, dp->index + 3, s.base.speed); 3243 3244 return NOTIFY_DONE; 3245 } 3246 3247 static int mtk_open(struct net_device *dev) 3248 { 3249 struct mtk_mac *mac = netdev_priv(dev); 3250 struct mtk_eth *eth = mac->hw; 3251 int i, err; 3252 3253 if (mtk_uses_dsa(dev) && !eth->prog) { 3254 for (i = 0; i < ARRAY_SIZE(eth->dsa_meta); i++) { 3255 struct metadata_dst *md_dst = eth->dsa_meta[i]; 3256 3257 if (md_dst) 3258 continue; 3259 3260 md_dst = metadata_dst_alloc(0, METADATA_HW_PORT_MUX, 3261 GFP_KERNEL); 3262 if (!md_dst) 3263 return -ENOMEM; 3264 3265 md_dst->u.port_info.port_id = i; 3266 eth->dsa_meta[i] = md_dst; 3267 } 3268 } else { 3269 /* Hardware special tag parsing needs to be disabled if at least 3270 * one MAC does not use DSA. 3271 */ 3272 u32 val = mtk_r32(eth, MTK_CDMP_IG_CTRL); 3273 val &= ~MTK_CDMP_STAG_EN; 3274 mtk_w32(eth, val, MTK_CDMP_IG_CTRL); 3275 } 3276 3277 err = phylink_of_phy_connect(mac->phylink, mac->of_node, 0); 3278 if (err) { 3279 netdev_err(dev, "%s: could not attach PHY: %d\n", __func__, 3280 err); 3281 return err; 3282 } 3283 3284 /* we run 2 netdevs on the same dma ring so we only bring it up once */ 3285 if (!refcount_read(ð->dma_refcnt)) { 3286 const struct mtk_soc_data *soc = eth->soc; 3287 u32 gdm_config; 3288 int i; 3289 3290 err = mtk_start_dma(eth); 3291 if (err) { 3292 phylink_disconnect_phy(mac->phylink); 3293 return err; 3294 } 3295 3296 for (i = 0; i < ARRAY_SIZE(eth->ppe); i++) 3297 mtk_ppe_start(eth->ppe[i]); 3298 3299 gdm_config = soc->offload_version ? soc->reg_map->gdma_to_ppe 3300 : MTK_GDMA_TO_PDMA; 3301 mtk_gdm_config(eth, gdm_config); 3302 3303 napi_enable(ð->tx_napi); 3304 napi_enable(ð->rx_napi); 3305 mtk_tx_irq_enable(eth, MTK_TX_DONE_INT); 3306 mtk_rx_irq_enable(eth, soc->txrx.rx_irq_done_mask); 3307 refcount_set(ð->dma_refcnt, 1); 3308 } 3309 else 3310 refcount_inc(ð->dma_refcnt); 3311 3312 phylink_start(mac->phylink); 3313 netif_tx_start_all_queues(dev); 3314 3315 return 0; 3316 } 3317 3318 static void mtk_stop_dma(struct mtk_eth *eth, u32 glo_cfg) 3319 { 3320 u32 val; 3321 int i; 3322 3323 /* stop the dma engine */ 3324 spin_lock_bh(ð->page_lock); 3325 val = mtk_r32(eth, glo_cfg); 3326 mtk_w32(eth, val & ~(MTK_TX_WB_DDONE | MTK_RX_DMA_EN | MTK_TX_DMA_EN), 3327 glo_cfg); 3328 spin_unlock_bh(ð->page_lock); 3329 3330 /* wait for dma stop */ 3331 for (i = 0; i < 10; i++) { 3332 val = mtk_r32(eth, glo_cfg); 3333 if (val & (MTK_TX_DMA_BUSY | MTK_RX_DMA_BUSY)) { 3334 msleep(20); 3335 continue; 3336 } 3337 break; 3338 } 3339 } 3340 3341 static int mtk_stop(struct net_device *dev) 3342 { 3343 struct mtk_mac *mac = netdev_priv(dev); 3344 struct mtk_eth *eth = mac->hw; 3345 int i; 3346 3347 phylink_stop(mac->phylink); 3348 3349 netif_tx_disable(dev); 3350 3351 phylink_disconnect_phy(mac->phylink); 3352 3353 /* only shutdown DMA if this is the last user */ 3354 if (!refcount_dec_and_test(ð->dma_refcnt)) 3355 return 0; 3356 3357 mtk_gdm_config(eth, MTK_GDMA_DROP_ALL); 3358 3359 mtk_tx_irq_disable(eth, MTK_TX_DONE_INT); 3360 mtk_rx_irq_disable(eth, eth->soc->txrx.rx_irq_done_mask); 3361 napi_disable(ð->tx_napi); 3362 napi_disable(ð->rx_napi); 3363 3364 cancel_work_sync(ð->rx_dim.work); 3365 cancel_work_sync(ð->tx_dim.work); 3366 3367 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 3368 mtk_stop_dma(eth, eth->soc->reg_map->qdma.glo_cfg); 3369 mtk_stop_dma(eth, eth->soc->reg_map->pdma.glo_cfg); 3370 3371 mtk_dma_free(eth); 3372 3373 for (i = 0; i < ARRAY_SIZE(eth->ppe); i++) 3374 mtk_ppe_stop(eth->ppe[i]); 3375 3376 return 0; 3377 } 3378 3379 static int mtk_xdp_setup(struct net_device *dev, struct bpf_prog *prog, 3380 struct netlink_ext_ack *extack) 3381 { 3382 struct mtk_mac *mac = netdev_priv(dev); 3383 struct mtk_eth *eth = mac->hw; 3384 struct bpf_prog *old_prog; 3385 bool need_update; 3386 3387 if (eth->hwlro) { 3388 NL_SET_ERR_MSG_MOD(extack, "XDP not supported with HWLRO"); 3389 return -EOPNOTSUPP; 3390 } 3391 3392 if (dev->mtu > MTK_PP_MAX_BUF_SIZE) { 3393 NL_SET_ERR_MSG_MOD(extack, "MTU too large for XDP"); 3394 return -EOPNOTSUPP; 3395 } 3396 3397 need_update = !!eth->prog != !!prog; 3398 if (netif_running(dev) && need_update) 3399 mtk_stop(dev); 3400 3401 old_prog = rcu_replace_pointer(eth->prog, prog, lockdep_rtnl_is_held()); 3402 if (old_prog) 3403 bpf_prog_put(old_prog); 3404 3405 if (netif_running(dev) && need_update) 3406 return mtk_open(dev); 3407 3408 return 0; 3409 } 3410 3411 static int mtk_xdp(struct net_device *dev, struct netdev_bpf *xdp) 3412 { 3413 switch (xdp->command) { 3414 case XDP_SETUP_PROG: 3415 return mtk_xdp_setup(dev, xdp->prog, xdp->extack); 3416 default: 3417 return -EINVAL; 3418 } 3419 } 3420 3421 static void ethsys_reset(struct mtk_eth *eth, u32 reset_bits) 3422 { 3423 regmap_update_bits(eth->ethsys, ETHSYS_RSTCTRL, 3424 reset_bits, 3425 reset_bits); 3426 3427 usleep_range(1000, 1100); 3428 regmap_update_bits(eth->ethsys, ETHSYS_RSTCTRL, 3429 reset_bits, 3430 ~reset_bits); 3431 mdelay(10); 3432 } 3433 3434 static void mtk_clk_disable(struct mtk_eth *eth) 3435 { 3436 int clk; 3437 3438 for (clk = MTK_CLK_MAX - 1; clk >= 0; clk--) 3439 clk_disable_unprepare(eth->clks[clk]); 3440 } 3441 3442 static int mtk_clk_enable(struct mtk_eth *eth) 3443 { 3444 int clk, ret; 3445 3446 for (clk = 0; clk < MTK_CLK_MAX ; clk++) { 3447 ret = clk_prepare_enable(eth->clks[clk]); 3448 if (ret) 3449 goto err_disable_clks; 3450 } 3451 3452 return 0; 3453 3454 err_disable_clks: 3455 while (--clk >= 0) 3456 clk_disable_unprepare(eth->clks[clk]); 3457 3458 return ret; 3459 } 3460 3461 static void mtk_dim_rx(struct work_struct *work) 3462 { 3463 struct dim *dim = container_of(work, struct dim, work); 3464 struct mtk_eth *eth = container_of(dim, struct mtk_eth, rx_dim); 3465 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 3466 struct dim_cq_moder cur_profile; 3467 u32 val, cur; 3468 3469 cur_profile = net_dim_get_rx_moderation(eth->rx_dim.mode, 3470 dim->profile_ix); 3471 spin_lock_bh(ð->dim_lock); 3472 3473 val = mtk_r32(eth, reg_map->pdma.delay_irq); 3474 val &= MTK_PDMA_DELAY_TX_MASK; 3475 val |= MTK_PDMA_DELAY_RX_EN; 3476 3477 cur = min_t(u32, DIV_ROUND_UP(cur_profile.usec, 20), MTK_PDMA_DELAY_PTIME_MASK); 3478 val |= cur << MTK_PDMA_DELAY_RX_PTIME_SHIFT; 3479 3480 cur = min_t(u32, cur_profile.pkts, MTK_PDMA_DELAY_PINT_MASK); 3481 val |= cur << MTK_PDMA_DELAY_RX_PINT_SHIFT; 3482 3483 mtk_w32(eth, val, reg_map->pdma.delay_irq); 3484 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 3485 mtk_w32(eth, val, reg_map->qdma.delay_irq); 3486 3487 spin_unlock_bh(ð->dim_lock); 3488 3489 dim->state = DIM_START_MEASURE; 3490 } 3491 3492 static void mtk_dim_tx(struct work_struct *work) 3493 { 3494 struct dim *dim = container_of(work, struct dim, work); 3495 struct mtk_eth *eth = container_of(dim, struct mtk_eth, tx_dim); 3496 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 3497 struct dim_cq_moder cur_profile; 3498 u32 val, cur; 3499 3500 cur_profile = net_dim_get_tx_moderation(eth->tx_dim.mode, 3501 dim->profile_ix); 3502 spin_lock_bh(ð->dim_lock); 3503 3504 val = mtk_r32(eth, reg_map->pdma.delay_irq); 3505 val &= MTK_PDMA_DELAY_RX_MASK; 3506 val |= MTK_PDMA_DELAY_TX_EN; 3507 3508 cur = min_t(u32, DIV_ROUND_UP(cur_profile.usec, 20), MTK_PDMA_DELAY_PTIME_MASK); 3509 val |= cur << MTK_PDMA_DELAY_TX_PTIME_SHIFT; 3510 3511 cur = min_t(u32, cur_profile.pkts, MTK_PDMA_DELAY_PINT_MASK); 3512 val |= cur << MTK_PDMA_DELAY_TX_PINT_SHIFT; 3513 3514 mtk_w32(eth, val, reg_map->pdma.delay_irq); 3515 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 3516 mtk_w32(eth, val, reg_map->qdma.delay_irq); 3517 3518 spin_unlock_bh(ð->dim_lock); 3519 3520 dim->state = DIM_START_MEASURE; 3521 } 3522 3523 static void mtk_set_mcr_max_rx(struct mtk_mac *mac, u32 val) 3524 { 3525 struct mtk_eth *eth = mac->hw; 3526 u32 mcr_cur, mcr_new; 3527 3528 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) 3529 return; 3530 3531 mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); 3532 mcr_new = mcr_cur & ~MAC_MCR_MAX_RX_MASK; 3533 3534 if (val <= 1518) 3535 mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1518); 3536 else if (val <= 1536) 3537 mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1536); 3538 else if (val <= 1552) 3539 mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1552); 3540 else 3541 mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_2048); 3542 3543 if (mcr_new != mcr_cur) 3544 mtk_w32(mac->hw, mcr_new, MTK_MAC_MCR(mac->id)); 3545 } 3546 3547 static void mtk_hw_reset(struct mtk_eth *eth) 3548 { 3549 u32 val; 3550 3551 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { 3552 regmap_write(eth->ethsys, ETHSYS_FE_RST_CHK_IDLE_EN, 0); 3553 val = RSTCTRL_PPE0_V2; 3554 } else { 3555 val = RSTCTRL_PPE0; 3556 } 3557 3558 if (MTK_HAS_CAPS(eth->soc->caps, MTK_RSTCTRL_PPE1)) 3559 val |= RSTCTRL_PPE1; 3560 3561 ethsys_reset(eth, RSTCTRL_ETH | RSTCTRL_FE | val); 3562 3563 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) 3564 regmap_write(eth->ethsys, ETHSYS_FE_RST_CHK_IDLE_EN, 3565 0x3ffffff); 3566 } 3567 3568 static u32 mtk_hw_reset_read(struct mtk_eth *eth) 3569 { 3570 u32 val; 3571 3572 regmap_read(eth->ethsys, ETHSYS_RSTCTRL, &val); 3573 return val; 3574 } 3575 3576 static void mtk_hw_warm_reset(struct mtk_eth *eth) 3577 { 3578 u32 rst_mask, val; 3579 3580 regmap_update_bits(eth->ethsys, ETHSYS_RSTCTRL, RSTCTRL_FE, 3581 RSTCTRL_FE); 3582 if (readx_poll_timeout_atomic(mtk_hw_reset_read, eth, val, 3583 val & RSTCTRL_FE, 1, 1000)) { 3584 dev_err(eth->dev, "warm reset failed\n"); 3585 mtk_hw_reset(eth); 3586 return; 3587 } 3588 3589 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) 3590 rst_mask = RSTCTRL_ETH | RSTCTRL_PPE0_V2; 3591 else 3592 rst_mask = RSTCTRL_ETH | RSTCTRL_PPE0; 3593 3594 if (MTK_HAS_CAPS(eth->soc->caps, MTK_RSTCTRL_PPE1)) 3595 rst_mask |= RSTCTRL_PPE1; 3596 3597 regmap_update_bits(eth->ethsys, ETHSYS_RSTCTRL, rst_mask, rst_mask); 3598 3599 udelay(1); 3600 val = mtk_hw_reset_read(eth); 3601 if (!(val & rst_mask)) 3602 dev_err(eth->dev, "warm reset stage0 failed %08x (%08x)\n", 3603 val, rst_mask); 3604 3605 rst_mask |= RSTCTRL_FE; 3606 regmap_update_bits(eth->ethsys, ETHSYS_RSTCTRL, rst_mask, ~rst_mask); 3607 3608 udelay(1); 3609 val = mtk_hw_reset_read(eth); 3610 if (val & rst_mask) 3611 dev_err(eth->dev, "warm reset stage1 failed %08x (%08x)\n", 3612 val, rst_mask); 3613 } 3614 3615 static bool mtk_hw_check_dma_hang(struct mtk_eth *eth) 3616 { 3617 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 3618 bool gmac1_tx, gmac2_tx, gdm1_tx, gdm2_tx; 3619 bool oq_hang, cdm1_busy, adma_busy; 3620 bool wtx_busy, cdm_full, oq_free; 3621 u32 wdidx, val, gdm1_fc, gdm2_fc; 3622 bool qfsm_hang, qfwd_hang; 3623 bool ret = false; 3624 3625 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) 3626 return false; 3627 3628 /* WDMA sanity checks */ 3629 wdidx = mtk_r32(eth, reg_map->wdma_base[0] + 0xc); 3630 3631 val = mtk_r32(eth, reg_map->wdma_base[0] + 0x204); 3632 wtx_busy = FIELD_GET(MTK_TX_DMA_BUSY, val); 3633 3634 val = mtk_r32(eth, reg_map->wdma_base[0] + 0x230); 3635 cdm_full = !FIELD_GET(MTK_CDM_TXFIFO_RDY, val); 3636 3637 oq_free = (!(mtk_r32(eth, reg_map->pse_oq_sta) & GENMASK(24, 16)) && 3638 !(mtk_r32(eth, reg_map->pse_oq_sta + 0x4) & GENMASK(8, 0)) && 3639 !(mtk_r32(eth, reg_map->pse_oq_sta + 0x10) & GENMASK(24, 16))); 3640 3641 if (wdidx == eth->reset.wdidx && wtx_busy && cdm_full && oq_free) { 3642 if (++eth->reset.wdma_hang_count > 2) { 3643 eth->reset.wdma_hang_count = 0; 3644 ret = true; 3645 } 3646 goto out; 3647 } 3648 3649 /* QDMA sanity checks */ 3650 qfsm_hang = !!mtk_r32(eth, reg_map->qdma.qtx_cfg + 0x234); 3651 qfwd_hang = !mtk_r32(eth, reg_map->qdma.qtx_cfg + 0x308); 3652 3653 gdm1_tx = FIELD_GET(GENMASK(31, 16), mtk_r32(eth, MTK_FE_GDM1_FSM)) > 0; 3654 gdm2_tx = FIELD_GET(GENMASK(31, 16), mtk_r32(eth, MTK_FE_GDM2_FSM)) > 0; 3655 gmac1_tx = FIELD_GET(GENMASK(31, 24), mtk_r32(eth, MTK_MAC_FSM(0))) != 1; 3656 gmac2_tx = FIELD_GET(GENMASK(31, 24), mtk_r32(eth, MTK_MAC_FSM(1))) != 1; 3657 gdm1_fc = mtk_r32(eth, reg_map->gdm1_cnt + 0x24); 3658 gdm2_fc = mtk_r32(eth, reg_map->gdm1_cnt + 0x64); 3659 3660 if (qfsm_hang && qfwd_hang && 3661 ((gdm1_tx && gmac1_tx && gdm1_fc < 1) || 3662 (gdm2_tx && gmac2_tx && gdm2_fc < 1))) { 3663 if (++eth->reset.qdma_hang_count > 2) { 3664 eth->reset.qdma_hang_count = 0; 3665 ret = true; 3666 } 3667 goto out; 3668 } 3669 3670 /* ADMA sanity checks */ 3671 oq_hang = !!(mtk_r32(eth, reg_map->pse_oq_sta) & GENMASK(8, 0)); 3672 cdm1_busy = !!(mtk_r32(eth, MTK_FE_CDM1_FSM) & GENMASK(31, 16)); 3673 adma_busy = !(mtk_r32(eth, reg_map->pdma.adma_rx_dbg0) & GENMASK(4, 0)) && 3674 !(mtk_r32(eth, reg_map->pdma.adma_rx_dbg0) & BIT(6)); 3675 3676 if (oq_hang && cdm1_busy && adma_busy) { 3677 if (++eth->reset.adma_hang_count > 2) { 3678 eth->reset.adma_hang_count = 0; 3679 ret = true; 3680 } 3681 goto out; 3682 } 3683 3684 eth->reset.wdma_hang_count = 0; 3685 eth->reset.qdma_hang_count = 0; 3686 eth->reset.adma_hang_count = 0; 3687 out: 3688 eth->reset.wdidx = wdidx; 3689 3690 return ret; 3691 } 3692 3693 static void mtk_hw_reset_monitor_work(struct work_struct *work) 3694 { 3695 struct delayed_work *del_work = to_delayed_work(work); 3696 struct mtk_eth *eth = container_of(del_work, struct mtk_eth, 3697 reset.monitor_work); 3698 3699 if (test_bit(MTK_RESETTING, ð->state)) 3700 goto out; 3701 3702 /* DMA stuck checks */ 3703 if (mtk_hw_check_dma_hang(eth)) 3704 schedule_work(ð->pending_work); 3705 3706 out: 3707 schedule_delayed_work(ð->reset.monitor_work, 3708 MTK_DMA_MONITOR_TIMEOUT); 3709 } 3710 3711 static int mtk_hw_init(struct mtk_eth *eth, bool reset) 3712 { 3713 u32 dma_mask = ETHSYS_DMA_AG_MAP_PDMA | ETHSYS_DMA_AG_MAP_QDMA | 3714 ETHSYS_DMA_AG_MAP_PPE; 3715 const struct mtk_reg_map *reg_map = eth->soc->reg_map; 3716 int i, val, ret; 3717 3718 if (!reset && test_and_set_bit(MTK_HW_INIT, ð->state)) 3719 return 0; 3720 3721 if (!reset) { 3722 pm_runtime_enable(eth->dev); 3723 pm_runtime_get_sync(eth->dev); 3724 3725 ret = mtk_clk_enable(eth); 3726 if (ret) 3727 goto err_disable_pm; 3728 } 3729 3730 if (eth->ethsys) 3731 regmap_update_bits(eth->ethsys, ETHSYS_DMA_AG_MAP, dma_mask, 3732 of_dma_is_coherent(eth->dma_dev->of_node) * dma_mask); 3733 3734 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 3735 ret = device_reset(eth->dev); 3736 if (ret) { 3737 dev_err(eth->dev, "MAC reset failed!\n"); 3738 goto err_disable_pm; 3739 } 3740 3741 /* set interrupt delays based on current Net DIM sample */ 3742 mtk_dim_rx(ð->rx_dim.work); 3743 mtk_dim_tx(ð->tx_dim.work); 3744 3745 /* disable delay and normal interrupt */ 3746 mtk_tx_irq_disable(eth, ~0); 3747 mtk_rx_irq_disable(eth, ~0); 3748 3749 return 0; 3750 } 3751 3752 msleep(100); 3753 3754 if (reset) 3755 mtk_hw_warm_reset(eth); 3756 else 3757 mtk_hw_reset(eth); 3758 3759 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { 3760 /* Set FE to PDMAv2 if necessary */ 3761 val = mtk_r32(eth, MTK_FE_GLO_MISC); 3762 mtk_w32(eth, val | BIT(4), MTK_FE_GLO_MISC); 3763 } 3764 3765 if (eth->pctl) { 3766 /* Set GE2 driving and slew rate */ 3767 regmap_write(eth->pctl, GPIO_DRV_SEL10, 0xa00); 3768 3769 /* set GE2 TDSEL */ 3770 regmap_write(eth->pctl, GPIO_OD33_CTRL8, 0x5); 3771 3772 /* set GE2 TUNE */ 3773 regmap_write(eth->pctl, GPIO_BIAS_CTRL, 0x0); 3774 } 3775 3776 /* Set linkdown as the default for each GMAC. Its own MCR would be set 3777 * up with the more appropriate value when mtk_mac_config call is being 3778 * invoked. 3779 */ 3780 for (i = 0; i < MTK_MAC_COUNT; i++) { 3781 struct net_device *dev = eth->netdev[i]; 3782 3783 mtk_w32(eth, MAC_MCR_FORCE_LINK_DOWN, MTK_MAC_MCR(i)); 3784 if (dev) { 3785 struct mtk_mac *mac = netdev_priv(dev); 3786 3787 mtk_set_mcr_max_rx(mac, dev->mtu + MTK_RX_ETH_HLEN); 3788 } 3789 } 3790 3791 /* Indicates CDM to parse the MTK special tag from CPU 3792 * which also is working out for untag packets. 3793 */ 3794 val = mtk_r32(eth, MTK_CDMQ_IG_CTRL); 3795 mtk_w32(eth, val | MTK_CDMQ_STAG_EN, MTK_CDMQ_IG_CTRL); 3796 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { 3797 val = mtk_r32(eth, MTK_CDMP_IG_CTRL); 3798 mtk_w32(eth, val | MTK_CDMP_STAG_EN, MTK_CDMP_IG_CTRL); 3799 } 3800 3801 /* Enable RX VLan Offloading */ 3802 mtk_w32(eth, 1, MTK_CDMP_EG_CTRL); 3803 3804 /* set interrupt delays based on current Net DIM sample */ 3805 mtk_dim_rx(ð->rx_dim.work); 3806 mtk_dim_tx(ð->tx_dim.work); 3807 3808 /* disable delay and normal interrupt */ 3809 mtk_tx_irq_disable(eth, ~0); 3810 mtk_rx_irq_disable(eth, ~0); 3811 3812 /* FE int grouping */ 3813 mtk_w32(eth, MTK_TX_DONE_INT, reg_map->pdma.int_grp); 3814 mtk_w32(eth, eth->soc->txrx.rx_irq_done_mask, reg_map->pdma.int_grp + 4); 3815 mtk_w32(eth, MTK_TX_DONE_INT, reg_map->qdma.int_grp); 3816 mtk_w32(eth, eth->soc->txrx.rx_irq_done_mask, reg_map->qdma.int_grp + 4); 3817 mtk_w32(eth, 0x21021000, MTK_FE_INT_GRP); 3818 3819 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { 3820 /* PSE should not drop port8 and port9 packets from WDMA Tx */ 3821 mtk_w32(eth, 0x00000300, PSE_DROP_CFG); 3822 3823 /* PSE should drop packets to port 8/9 on WDMA Rx ring full */ 3824 mtk_w32(eth, 0x00000300, PSE_PPE0_DROP); 3825 3826 /* PSE Free Queue Flow Control */ 3827 mtk_w32(eth, 0x01fa01f4, PSE_FQFC_CFG2); 3828 3829 /* PSE config input queue threshold */ 3830 mtk_w32(eth, 0x001a000e, PSE_IQ_REV(1)); 3831 mtk_w32(eth, 0x01ff001a, PSE_IQ_REV(2)); 3832 mtk_w32(eth, 0x000e01ff, PSE_IQ_REV(3)); 3833 mtk_w32(eth, 0x000e000e, PSE_IQ_REV(4)); 3834 mtk_w32(eth, 0x000e000e, PSE_IQ_REV(5)); 3835 mtk_w32(eth, 0x000e000e, PSE_IQ_REV(6)); 3836 mtk_w32(eth, 0x000e000e, PSE_IQ_REV(7)); 3837 mtk_w32(eth, 0x000e000e, PSE_IQ_REV(8)); 3838 3839 /* PSE config output queue threshold */ 3840 mtk_w32(eth, 0x000f000a, PSE_OQ_TH(1)); 3841 mtk_w32(eth, 0x001a000f, PSE_OQ_TH(2)); 3842 mtk_w32(eth, 0x000f001a, PSE_OQ_TH(3)); 3843 mtk_w32(eth, 0x01ff000f, PSE_OQ_TH(4)); 3844 mtk_w32(eth, 0x000f000f, PSE_OQ_TH(5)); 3845 mtk_w32(eth, 0x0006000f, PSE_OQ_TH(6)); 3846 mtk_w32(eth, 0x00060006, PSE_OQ_TH(7)); 3847 mtk_w32(eth, 0x00060006, PSE_OQ_TH(8)); 3848 3849 /* GDM and CDM Threshold */ 3850 mtk_w32(eth, 0x00000004, MTK_GDM2_THRES); 3851 mtk_w32(eth, 0x00000004, MTK_CDMW0_THRES); 3852 mtk_w32(eth, 0x00000004, MTK_CDMW1_THRES); 3853 mtk_w32(eth, 0x00000004, MTK_CDME0_THRES); 3854 mtk_w32(eth, 0x00000004, MTK_CDME1_THRES); 3855 mtk_w32(eth, 0x00000004, MTK_CDMM_THRES); 3856 } 3857 3858 return 0; 3859 3860 err_disable_pm: 3861 if (!reset) { 3862 pm_runtime_put_sync(eth->dev); 3863 pm_runtime_disable(eth->dev); 3864 } 3865 3866 return ret; 3867 } 3868 3869 static int mtk_hw_deinit(struct mtk_eth *eth) 3870 { 3871 if (!test_and_clear_bit(MTK_HW_INIT, ð->state)) 3872 return 0; 3873 3874 mtk_clk_disable(eth); 3875 3876 pm_runtime_put_sync(eth->dev); 3877 pm_runtime_disable(eth->dev); 3878 3879 return 0; 3880 } 3881 3882 static int __init mtk_init(struct net_device *dev) 3883 { 3884 struct mtk_mac *mac = netdev_priv(dev); 3885 struct mtk_eth *eth = mac->hw; 3886 int ret; 3887 3888 ret = of_get_ethdev_address(mac->of_node, dev); 3889 if (ret) { 3890 /* If the mac address is invalid, use random mac address */ 3891 eth_hw_addr_random(dev); 3892 dev_err(eth->dev, "generated random MAC address %pM\n", 3893 dev->dev_addr); 3894 } 3895 3896 return 0; 3897 } 3898 3899 static void mtk_uninit(struct net_device *dev) 3900 { 3901 struct mtk_mac *mac = netdev_priv(dev); 3902 struct mtk_eth *eth = mac->hw; 3903 3904 phylink_disconnect_phy(mac->phylink); 3905 mtk_tx_irq_disable(eth, ~0); 3906 mtk_rx_irq_disable(eth, ~0); 3907 } 3908 3909 static int mtk_change_mtu(struct net_device *dev, int new_mtu) 3910 { 3911 int length = new_mtu + MTK_RX_ETH_HLEN; 3912 struct mtk_mac *mac = netdev_priv(dev); 3913 struct mtk_eth *eth = mac->hw; 3914 3915 if (rcu_access_pointer(eth->prog) && 3916 length > MTK_PP_MAX_BUF_SIZE) { 3917 netdev_err(dev, "Invalid MTU for XDP mode\n"); 3918 return -EINVAL; 3919 } 3920 3921 mtk_set_mcr_max_rx(mac, length); 3922 dev->mtu = new_mtu; 3923 3924 return 0; 3925 } 3926 3927 static int mtk_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 3928 { 3929 struct mtk_mac *mac = netdev_priv(dev); 3930 3931 switch (cmd) { 3932 case SIOCGMIIPHY: 3933 case SIOCGMIIREG: 3934 case SIOCSMIIREG: 3935 return phylink_mii_ioctl(mac->phylink, ifr, cmd); 3936 default: 3937 break; 3938 } 3939 3940 return -EOPNOTSUPP; 3941 } 3942 3943 static void mtk_prepare_for_reset(struct mtk_eth *eth) 3944 { 3945 u32 val; 3946 int i; 3947 3948 /* disabe FE P3 and P4 */ 3949 val = mtk_r32(eth, MTK_FE_GLO_CFG) | MTK_FE_LINK_DOWN_P3; 3950 if (MTK_HAS_CAPS(eth->soc->caps, MTK_RSTCTRL_PPE1)) 3951 val |= MTK_FE_LINK_DOWN_P4; 3952 mtk_w32(eth, val, MTK_FE_GLO_CFG); 3953 3954 /* adjust PPE configurations to prepare for reset */ 3955 for (i = 0; i < ARRAY_SIZE(eth->ppe); i++) 3956 mtk_ppe_prepare_reset(eth->ppe[i]); 3957 3958 /* disable NETSYS interrupts */ 3959 mtk_w32(eth, 0, MTK_FE_INT_ENABLE); 3960 3961 /* force link down GMAC */ 3962 for (i = 0; i < 2; i++) { 3963 val = mtk_r32(eth, MTK_MAC_MCR(i)) & ~MAC_MCR_FORCE_LINK; 3964 mtk_w32(eth, val, MTK_MAC_MCR(i)); 3965 } 3966 } 3967 3968 static void mtk_pending_work(struct work_struct *work) 3969 { 3970 struct mtk_eth *eth = container_of(work, struct mtk_eth, pending_work); 3971 unsigned long restart = 0; 3972 u32 val; 3973 int i; 3974 3975 rtnl_lock(); 3976 set_bit(MTK_RESETTING, ð->state); 3977 3978 mtk_prepare_for_reset(eth); 3979 mtk_wed_fe_reset(); 3980 /* Run again reset preliminary configuration in order to avoid any 3981 * possible race during FE reset since it can run releasing RTNL lock. 3982 */ 3983 mtk_prepare_for_reset(eth); 3984 3985 /* stop all devices to make sure that dma is properly shut down */ 3986 for (i = 0; i < MTK_MAC_COUNT; i++) { 3987 if (!eth->netdev[i] || !netif_running(eth->netdev[i])) 3988 continue; 3989 3990 mtk_stop(eth->netdev[i]); 3991 __set_bit(i, &restart); 3992 } 3993 3994 usleep_range(15000, 16000); 3995 3996 if (eth->dev->pins) 3997 pinctrl_select_state(eth->dev->pins->p, 3998 eth->dev->pins->default_state); 3999 mtk_hw_init(eth, true); 4000 4001 /* restart DMA and enable IRQs */ 4002 for (i = 0; i < MTK_MAC_COUNT; i++) { 4003 if (!test_bit(i, &restart)) 4004 continue; 4005 4006 if (mtk_open(eth->netdev[i])) { 4007 netif_alert(eth, ifup, eth->netdev[i], 4008 "Driver up/down cycle failed\n"); 4009 dev_close(eth->netdev[i]); 4010 } 4011 } 4012 4013 /* enabe FE P3 and P4 */ 4014 val = mtk_r32(eth, MTK_FE_GLO_CFG) & ~MTK_FE_LINK_DOWN_P3; 4015 if (MTK_HAS_CAPS(eth->soc->caps, MTK_RSTCTRL_PPE1)) 4016 val &= ~MTK_FE_LINK_DOWN_P4; 4017 mtk_w32(eth, val, MTK_FE_GLO_CFG); 4018 4019 clear_bit(MTK_RESETTING, ð->state); 4020 4021 mtk_wed_fe_reset_complete(); 4022 4023 rtnl_unlock(); 4024 } 4025 4026 static int mtk_free_dev(struct mtk_eth *eth) 4027 { 4028 int i; 4029 4030 for (i = 0; i < MTK_MAC_COUNT; i++) { 4031 if (!eth->netdev[i]) 4032 continue; 4033 free_netdev(eth->netdev[i]); 4034 } 4035 4036 for (i = 0; i < ARRAY_SIZE(eth->dsa_meta); i++) { 4037 if (!eth->dsa_meta[i]) 4038 break; 4039 metadata_dst_free(eth->dsa_meta[i]); 4040 } 4041 4042 return 0; 4043 } 4044 4045 static int mtk_unreg_dev(struct mtk_eth *eth) 4046 { 4047 int i; 4048 4049 for (i = 0; i < MTK_MAC_COUNT; i++) { 4050 struct mtk_mac *mac; 4051 if (!eth->netdev[i]) 4052 continue; 4053 mac = netdev_priv(eth->netdev[i]); 4054 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 4055 unregister_netdevice_notifier(&mac->device_notifier); 4056 unregister_netdev(eth->netdev[i]); 4057 } 4058 4059 return 0; 4060 } 4061 4062 static int mtk_cleanup(struct mtk_eth *eth) 4063 { 4064 mtk_unreg_dev(eth); 4065 mtk_free_dev(eth); 4066 cancel_work_sync(ð->pending_work); 4067 cancel_delayed_work_sync(ð->reset.monitor_work); 4068 4069 return 0; 4070 } 4071 4072 static int mtk_get_link_ksettings(struct net_device *ndev, 4073 struct ethtool_link_ksettings *cmd) 4074 { 4075 struct mtk_mac *mac = netdev_priv(ndev); 4076 4077 if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) 4078 return -EBUSY; 4079 4080 return phylink_ethtool_ksettings_get(mac->phylink, cmd); 4081 } 4082 4083 static int mtk_set_link_ksettings(struct net_device *ndev, 4084 const struct ethtool_link_ksettings *cmd) 4085 { 4086 struct mtk_mac *mac = netdev_priv(ndev); 4087 4088 if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) 4089 return -EBUSY; 4090 4091 return phylink_ethtool_ksettings_set(mac->phylink, cmd); 4092 } 4093 4094 static void mtk_get_drvinfo(struct net_device *dev, 4095 struct ethtool_drvinfo *info) 4096 { 4097 struct mtk_mac *mac = netdev_priv(dev); 4098 4099 strscpy(info->driver, mac->hw->dev->driver->name, sizeof(info->driver)); 4100 strscpy(info->bus_info, dev_name(mac->hw->dev), sizeof(info->bus_info)); 4101 info->n_stats = ARRAY_SIZE(mtk_ethtool_stats); 4102 } 4103 4104 static u32 mtk_get_msglevel(struct net_device *dev) 4105 { 4106 struct mtk_mac *mac = netdev_priv(dev); 4107 4108 return mac->hw->msg_enable; 4109 } 4110 4111 static void mtk_set_msglevel(struct net_device *dev, u32 value) 4112 { 4113 struct mtk_mac *mac = netdev_priv(dev); 4114 4115 mac->hw->msg_enable = value; 4116 } 4117 4118 static int mtk_nway_reset(struct net_device *dev) 4119 { 4120 struct mtk_mac *mac = netdev_priv(dev); 4121 4122 if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) 4123 return -EBUSY; 4124 4125 if (!mac->phylink) 4126 return -ENOTSUPP; 4127 4128 return phylink_ethtool_nway_reset(mac->phylink); 4129 } 4130 4131 static void mtk_get_strings(struct net_device *dev, u32 stringset, u8 *data) 4132 { 4133 int i; 4134 4135 switch (stringset) { 4136 case ETH_SS_STATS: { 4137 struct mtk_mac *mac = netdev_priv(dev); 4138 4139 for (i = 0; i < ARRAY_SIZE(mtk_ethtool_stats); i++) { 4140 memcpy(data, mtk_ethtool_stats[i].str, ETH_GSTRING_LEN); 4141 data += ETH_GSTRING_LEN; 4142 } 4143 if (mtk_page_pool_enabled(mac->hw)) 4144 page_pool_ethtool_stats_get_strings(data); 4145 break; 4146 } 4147 default: 4148 break; 4149 } 4150 } 4151 4152 static int mtk_get_sset_count(struct net_device *dev, int sset) 4153 { 4154 switch (sset) { 4155 case ETH_SS_STATS: { 4156 int count = ARRAY_SIZE(mtk_ethtool_stats); 4157 struct mtk_mac *mac = netdev_priv(dev); 4158 4159 if (mtk_page_pool_enabled(mac->hw)) 4160 count += page_pool_ethtool_stats_get_count(); 4161 return count; 4162 } 4163 default: 4164 return -EOPNOTSUPP; 4165 } 4166 } 4167 4168 static void mtk_ethtool_pp_stats(struct mtk_eth *eth, u64 *data) 4169 { 4170 struct page_pool_stats stats = {}; 4171 int i; 4172 4173 for (i = 0; i < ARRAY_SIZE(eth->rx_ring); i++) { 4174 struct mtk_rx_ring *ring = ð->rx_ring[i]; 4175 4176 if (!ring->page_pool) 4177 continue; 4178 4179 page_pool_get_stats(ring->page_pool, &stats); 4180 } 4181 page_pool_ethtool_stats_get(data, &stats); 4182 } 4183 4184 static void mtk_get_ethtool_stats(struct net_device *dev, 4185 struct ethtool_stats *stats, u64 *data) 4186 { 4187 struct mtk_mac *mac = netdev_priv(dev); 4188 struct mtk_hw_stats *hwstats = mac->hw_stats; 4189 u64 *data_src, *data_dst; 4190 unsigned int start; 4191 int i; 4192 4193 if (unlikely(test_bit(MTK_RESETTING, &mac->hw->state))) 4194 return; 4195 4196 if (netif_running(dev) && netif_device_present(dev)) { 4197 if (spin_trylock_bh(&hwstats->stats_lock)) { 4198 mtk_stats_update_mac(mac); 4199 spin_unlock_bh(&hwstats->stats_lock); 4200 } 4201 } 4202 4203 data_src = (u64 *)hwstats; 4204 4205 do { 4206 data_dst = data; 4207 start = u64_stats_fetch_begin(&hwstats->syncp); 4208 4209 for (i = 0; i < ARRAY_SIZE(mtk_ethtool_stats); i++) 4210 *data_dst++ = *(data_src + mtk_ethtool_stats[i].offset); 4211 if (mtk_page_pool_enabled(mac->hw)) 4212 mtk_ethtool_pp_stats(mac->hw, data_dst); 4213 } while (u64_stats_fetch_retry(&hwstats->syncp, start)); 4214 } 4215 4216 static int mtk_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd, 4217 u32 *rule_locs) 4218 { 4219 int ret = -EOPNOTSUPP; 4220 4221 switch (cmd->cmd) { 4222 case ETHTOOL_GRXRINGS: 4223 if (dev->hw_features & NETIF_F_LRO) { 4224 cmd->data = MTK_MAX_RX_RING_NUM; 4225 ret = 0; 4226 } 4227 break; 4228 case ETHTOOL_GRXCLSRLCNT: 4229 if (dev->hw_features & NETIF_F_LRO) { 4230 struct mtk_mac *mac = netdev_priv(dev); 4231 4232 cmd->rule_cnt = mac->hwlro_ip_cnt; 4233 ret = 0; 4234 } 4235 break; 4236 case ETHTOOL_GRXCLSRULE: 4237 if (dev->hw_features & NETIF_F_LRO) 4238 ret = mtk_hwlro_get_fdir_entry(dev, cmd); 4239 break; 4240 case ETHTOOL_GRXCLSRLALL: 4241 if (dev->hw_features & NETIF_F_LRO) 4242 ret = mtk_hwlro_get_fdir_all(dev, cmd, 4243 rule_locs); 4244 break; 4245 default: 4246 break; 4247 } 4248 4249 return ret; 4250 } 4251 4252 static int mtk_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd) 4253 { 4254 int ret = -EOPNOTSUPP; 4255 4256 switch (cmd->cmd) { 4257 case ETHTOOL_SRXCLSRLINS: 4258 if (dev->hw_features & NETIF_F_LRO) 4259 ret = mtk_hwlro_add_ipaddr(dev, cmd); 4260 break; 4261 case ETHTOOL_SRXCLSRLDEL: 4262 if (dev->hw_features & NETIF_F_LRO) 4263 ret = mtk_hwlro_del_ipaddr(dev, cmd); 4264 break; 4265 default: 4266 break; 4267 } 4268 4269 return ret; 4270 } 4271 4272 static u16 mtk_select_queue(struct net_device *dev, struct sk_buff *skb, 4273 struct net_device *sb_dev) 4274 { 4275 struct mtk_mac *mac = netdev_priv(dev); 4276 unsigned int queue = 0; 4277 4278 if (netdev_uses_dsa(dev)) 4279 queue = skb_get_queue_mapping(skb) + 3; 4280 else 4281 queue = mac->id; 4282 4283 if (queue >= dev->num_tx_queues) 4284 queue = 0; 4285 4286 return queue; 4287 } 4288 4289 static const struct ethtool_ops mtk_ethtool_ops = { 4290 .get_link_ksettings = mtk_get_link_ksettings, 4291 .set_link_ksettings = mtk_set_link_ksettings, 4292 .get_drvinfo = mtk_get_drvinfo, 4293 .get_msglevel = mtk_get_msglevel, 4294 .set_msglevel = mtk_set_msglevel, 4295 .nway_reset = mtk_nway_reset, 4296 .get_link = ethtool_op_get_link, 4297 .get_strings = mtk_get_strings, 4298 .get_sset_count = mtk_get_sset_count, 4299 .get_ethtool_stats = mtk_get_ethtool_stats, 4300 .get_rxnfc = mtk_get_rxnfc, 4301 .set_rxnfc = mtk_set_rxnfc, 4302 }; 4303 4304 static const struct net_device_ops mtk_netdev_ops = { 4305 .ndo_init = mtk_init, 4306 .ndo_uninit = mtk_uninit, 4307 .ndo_open = mtk_open, 4308 .ndo_stop = mtk_stop, 4309 .ndo_start_xmit = mtk_start_xmit, 4310 .ndo_set_mac_address = mtk_set_mac_address, 4311 .ndo_validate_addr = eth_validate_addr, 4312 .ndo_eth_ioctl = mtk_do_ioctl, 4313 .ndo_change_mtu = mtk_change_mtu, 4314 .ndo_tx_timeout = mtk_tx_timeout, 4315 .ndo_get_stats64 = mtk_get_stats64, 4316 .ndo_fix_features = mtk_fix_features, 4317 .ndo_set_features = mtk_set_features, 4318 #ifdef CONFIG_NET_POLL_CONTROLLER 4319 .ndo_poll_controller = mtk_poll_controller, 4320 #endif 4321 .ndo_setup_tc = mtk_eth_setup_tc, 4322 .ndo_bpf = mtk_xdp, 4323 .ndo_xdp_xmit = mtk_xdp_xmit, 4324 .ndo_select_queue = mtk_select_queue, 4325 }; 4326 4327 static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) 4328 { 4329 const __be32 *_id = of_get_property(np, "reg", NULL); 4330 phy_interface_t phy_mode; 4331 struct phylink *phylink; 4332 struct mtk_mac *mac; 4333 int id, err; 4334 int txqs = 1; 4335 4336 if (!_id) { 4337 dev_err(eth->dev, "missing mac id\n"); 4338 return -EINVAL; 4339 } 4340 4341 id = be32_to_cpup(_id); 4342 if (id >= MTK_MAC_COUNT) { 4343 dev_err(eth->dev, "%d is not a valid mac id\n", id); 4344 return -EINVAL; 4345 } 4346 4347 if (eth->netdev[id]) { 4348 dev_err(eth->dev, "duplicate mac id found: %d\n", id); 4349 return -EINVAL; 4350 } 4351 4352 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) 4353 txqs = MTK_QDMA_NUM_QUEUES; 4354 4355 eth->netdev[id] = alloc_etherdev_mqs(sizeof(*mac), txqs, 1); 4356 if (!eth->netdev[id]) { 4357 dev_err(eth->dev, "alloc_etherdev failed\n"); 4358 return -ENOMEM; 4359 } 4360 mac = netdev_priv(eth->netdev[id]); 4361 eth->mac[id] = mac; 4362 mac->id = id; 4363 mac->hw = eth; 4364 mac->of_node = np; 4365 4366 memset(mac->hwlro_ip, 0, sizeof(mac->hwlro_ip)); 4367 mac->hwlro_ip_cnt = 0; 4368 4369 mac->hw_stats = devm_kzalloc(eth->dev, 4370 sizeof(*mac->hw_stats), 4371 GFP_KERNEL); 4372 if (!mac->hw_stats) { 4373 dev_err(eth->dev, "failed to allocate counter memory\n"); 4374 err = -ENOMEM; 4375 goto free_netdev; 4376 } 4377 spin_lock_init(&mac->hw_stats->stats_lock); 4378 u64_stats_init(&mac->hw_stats->syncp); 4379 mac->hw_stats->reg_offset = id * MTK_STAT_OFFSET; 4380 4381 /* phylink create */ 4382 err = of_get_phy_mode(np, &phy_mode); 4383 if (err) { 4384 dev_err(eth->dev, "incorrect phy-mode\n"); 4385 goto free_netdev; 4386 } 4387 4388 /* mac config is not set */ 4389 mac->interface = PHY_INTERFACE_MODE_NA; 4390 mac->speed = SPEED_UNKNOWN; 4391 4392 mac->phylink_config.dev = ð->netdev[id]->dev; 4393 mac->phylink_config.type = PHYLINK_NETDEV; 4394 /* This driver makes use of state->speed in mac_config */ 4395 mac->phylink_config.legacy_pre_march2020 = true; 4396 mac->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | 4397 MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD; 4398 4399 __set_bit(PHY_INTERFACE_MODE_MII, 4400 mac->phylink_config.supported_interfaces); 4401 __set_bit(PHY_INTERFACE_MODE_GMII, 4402 mac->phylink_config.supported_interfaces); 4403 4404 if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_RGMII)) 4405 phy_interface_set_rgmii(mac->phylink_config.supported_interfaces); 4406 4407 if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_TRGMII) && !mac->id) 4408 __set_bit(PHY_INTERFACE_MODE_TRGMII, 4409 mac->phylink_config.supported_interfaces); 4410 4411 if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_SGMII)) { 4412 __set_bit(PHY_INTERFACE_MODE_SGMII, 4413 mac->phylink_config.supported_interfaces); 4414 __set_bit(PHY_INTERFACE_MODE_1000BASEX, 4415 mac->phylink_config.supported_interfaces); 4416 __set_bit(PHY_INTERFACE_MODE_2500BASEX, 4417 mac->phylink_config.supported_interfaces); 4418 } 4419 4420 phylink = phylink_create(&mac->phylink_config, 4421 of_fwnode_handle(mac->of_node), 4422 phy_mode, &mtk_phylink_ops); 4423 if (IS_ERR(phylink)) { 4424 err = PTR_ERR(phylink); 4425 goto free_netdev; 4426 } 4427 4428 mac->phylink = phylink; 4429 4430 SET_NETDEV_DEV(eth->netdev[id], eth->dev); 4431 eth->netdev[id]->watchdog_timeo = 5 * HZ; 4432 eth->netdev[id]->netdev_ops = &mtk_netdev_ops; 4433 eth->netdev[id]->base_addr = (unsigned long)eth->base; 4434 4435 eth->netdev[id]->hw_features = eth->soc->hw_features; 4436 if (eth->hwlro) 4437 eth->netdev[id]->hw_features |= NETIF_F_LRO; 4438 4439 eth->netdev[id]->vlan_features = eth->soc->hw_features & 4440 ~(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX); 4441 eth->netdev[id]->features |= eth->soc->hw_features; 4442 eth->netdev[id]->ethtool_ops = &mtk_ethtool_ops; 4443 4444 eth->netdev[id]->irq = eth->irq[0]; 4445 eth->netdev[id]->dev.of_node = np; 4446 4447 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) 4448 eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; 4449 else 4450 eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH_2K - MTK_RX_ETH_HLEN; 4451 4452 if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA)) { 4453 mac->device_notifier.notifier_call = mtk_device_event; 4454 register_netdevice_notifier(&mac->device_notifier); 4455 } 4456 4457 if (mtk_page_pool_enabled(eth)) 4458 eth->netdev[id]->xdp_features = NETDEV_XDP_ACT_BASIC | 4459 NETDEV_XDP_ACT_REDIRECT | 4460 NETDEV_XDP_ACT_NDO_XMIT | 4461 NETDEV_XDP_ACT_NDO_XMIT_SG; 4462 4463 return 0; 4464 4465 free_netdev: 4466 free_netdev(eth->netdev[id]); 4467 return err; 4468 } 4469 4470 void mtk_eth_set_dma_device(struct mtk_eth *eth, struct device *dma_dev) 4471 { 4472 struct net_device *dev, *tmp; 4473 LIST_HEAD(dev_list); 4474 int i; 4475 4476 rtnl_lock(); 4477 4478 for (i = 0; i < MTK_MAC_COUNT; i++) { 4479 dev = eth->netdev[i]; 4480 4481 if (!dev || !(dev->flags & IFF_UP)) 4482 continue; 4483 4484 list_add_tail(&dev->close_list, &dev_list); 4485 } 4486 4487 dev_close_many(&dev_list, false); 4488 4489 eth->dma_dev = dma_dev; 4490 4491 list_for_each_entry_safe(dev, tmp, &dev_list, close_list) { 4492 list_del_init(&dev->close_list); 4493 dev_open(dev, NULL); 4494 } 4495 4496 rtnl_unlock(); 4497 } 4498 4499 static int mtk_probe(struct platform_device *pdev) 4500 { 4501 struct resource *res = NULL; 4502 struct device_node *mac_np; 4503 struct mtk_eth *eth; 4504 int err, i; 4505 4506 eth = devm_kzalloc(&pdev->dev, sizeof(*eth), GFP_KERNEL); 4507 if (!eth) 4508 return -ENOMEM; 4509 4510 eth->soc = of_device_get_match_data(&pdev->dev); 4511 4512 eth->dev = &pdev->dev; 4513 eth->dma_dev = &pdev->dev; 4514 eth->base = devm_platform_ioremap_resource(pdev, 0); 4515 if (IS_ERR(eth->base)) 4516 return PTR_ERR(eth->base); 4517 4518 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) 4519 eth->ip_align = NET_IP_ALIGN; 4520 4521 spin_lock_init(ð->page_lock); 4522 spin_lock_init(ð->tx_irq_lock); 4523 spin_lock_init(ð->rx_irq_lock); 4524 spin_lock_init(ð->dim_lock); 4525 4526 eth->rx_dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE; 4527 INIT_WORK(ð->rx_dim.work, mtk_dim_rx); 4528 INIT_DELAYED_WORK(ð->reset.monitor_work, mtk_hw_reset_monitor_work); 4529 4530 eth->tx_dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE; 4531 INIT_WORK(ð->tx_dim.work, mtk_dim_tx); 4532 4533 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 4534 eth->ethsys = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, 4535 "mediatek,ethsys"); 4536 if (IS_ERR(eth->ethsys)) { 4537 dev_err(&pdev->dev, "no ethsys regmap found\n"); 4538 return PTR_ERR(eth->ethsys); 4539 } 4540 } 4541 4542 if (MTK_HAS_CAPS(eth->soc->caps, MTK_INFRA)) { 4543 eth->infra = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, 4544 "mediatek,infracfg"); 4545 if (IS_ERR(eth->infra)) { 4546 dev_err(&pdev->dev, "no infracfg regmap found\n"); 4547 return PTR_ERR(eth->infra); 4548 } 4549 } 4550 4551 if (of_dma_is_coherent(pdev->dev.of_node)) { 4552 struct regmap *cci; 4553 4554 cci = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, 4555 "cci-control-port"); 4556 /* enable CPU/bus coherency */ 4557 if (!IS_ERR(cci)) 4558 regmap_write(cci, 0, 3); 4559 } 4560 4561 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SGMII)) { 4562 eth->sgmii = devm_kzalloc(eth->dev, sizeof(*eth->sgmii), 4563 GFP_KERNEL); 4564 if (!eth->sgmii) 4565 return -ENOMEM; 4566 4567 err = mtk_sgmii_init(eth->sgmii, pdev->dev.of_node, 4568 eth->soc->ana_rgc3); 4569 4570 if (err) 4571 return err; 4572 } 4573 4574 if (eth->soc->required_pctl) { 4575 eth->pctl = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, 4576 "mediatek,pctl"); 4577 if (IS_ERR(eth->pctl)) { 4578 dev_err(&pdev->dev, "no pctl regmap found\n"); 4579 return PTR_ERR(eth->pctl); 4580 } 4581 } 4582 4583 if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { 4584 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 4585 if (!res) 4586 return -EINVAL; 4587 } 4588 4589 if (eth->soc->offload_version) { 4590 for (i = 0;; i++) { 4591 struct device_node *np; 4592 phys_addr_t wdma_phy; 4593 u32 wdma_base; 4594 4595 if (i >= ARRAY_SIZE(eth->soc->reg_map->wdma_base)) 4596 break; 4597 4598 np = of_parse_phandle(pdev->dev.of_node, 4599 "mediatek,wed", i); 4600 if (!np) 4601 break; 4602 4603 wdma_base = eth->soc->reg_map->wdma_base[i]; 4604 wdma_phy = res ? res->start + wdma_base : 0; 4605 mtk_wed_add_hw(np, eth, eth->base + wdma_base, 4606 wdma_phy, i); 4607 } 4608 } 4609 4610 for (i = 0; i < 3; i++) { 4611 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_INT) && i > 0) 4612 eth->irq[i] = eth->irq[0]; 4613 else 4614 eth->irq[i] = platform_get_irq(pdev, i); 4615 if (eth->irq[i] < 0) { 4616 dev_err(&pdev->dev, "no IRQ%d resource found\n", i); 4617 err = -ENXIO; 4618 goto err_wed_exit; 4619 } 4620 } 4621 for (i = 0; i < ARRAY_SIZE(eth->clks); i++) { 4622 eth->clks[i] = devm_clk_get(eth->dev, 4623 mtk_clks_source_name[i]); 4624 if (IS_ERR(eth->clks[i])) { 4625 if (PTR_ERR(eth->clks[i]) == -EPROBE_DEFER) { 4626 err = -EPROBE_DEFER; 4627 goto err_wed_exit; 4628 } 4629 if (eth->soc->required_clks & BIT(i)) { 4630 dev_err(&pdev->dev, "clock %s not found\n", 4631 mtk_clks_source_name[i]); 4632 err = -EINVAL; 4633 goto err_wed_exit; 4634 } 4635 eth->clks[i] = NULL; 4636 } 4637 } 4638 4639 eth->msg_enable = netif_msg_init(mtk_msg_level, MTK_DEFAULT_MSG_ENABLE); 4640 INIT_WORK(ð->pending_work, mtk_pending_work); 4641 4642 err = mtk_hw_init(eth, false); 4643 if (err) 4644 goto err_wed_exit; 4645 4646 eth->hwlro = MTK_HAS_CAPS(eth->soc->caps, MTK_HWLRO); 4647 4648 for_each_child_of_node(pdev->dev.of_node, mac_np) { 4649 if (!of_device_is_compatible(mac_np, 4650 "mediatek,eth-mac")) 4651 continue; 4652 4653 if (!of_device_is_available(mac_np)) 4654 continue; 4655 4656 err = mtk_add_mac(eth, mac_np); 4657 if (err) { 4658 of_node_put(mac_np); 4659 goto err_deinit_hw; 4660 } 4661 } 4662 4663 if (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_INT)) { 4664 err = devm_request_irq(eth->dev, eth->irq[0], 4665 mtk_handle_irq, 0, 4666 dev_name(eth->dev), eth); 4667 } else { 4668 err = devm_request_irq(eth->dev, eth->irq[1], 4669 mtk_handle_irq_tx, 0, 4670 dev_name(eth->dev), eth); 4671 if (err) 4672 goto err_free_dev; 4673 4674 err = devm_request_irq(eth->dev, eth->irq[2], 4675 mtk_handle_irq_rx, 0, 4676 dev_name(eth->dev), eth); 4677 } 4678 if (err) 4679 goto err_free_dev; 4680 4681 /* No MT7628/88 support yet */ 4682 if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { 4683 err = mtk_mdio_init(eth); 4684 if (err) 4685 goto err_free_dev; 4686 } 4687 4688 if (eth->soc->offload_version) { 4689 u32 num_ppe; 4690 4691 num_ppe = MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2) ? 2 : 1; 4692 num_ppe = min_t(u32, ARRAY_SIZE(eth->ppe), num_ppe); 4693 for (i = 0; i < num_ppe; i++) { 4694 u32 ppe_addr = eth->soc->reg_map->ppe_base + i * 0x400; 4695 4696 eth->ppe[i] = mtk_ppe_init(eth, eth->base + ppe_addr, 4697 eth->soc->offload_version, i); 4698 if (!eth->ppe[i]) { 4699 err = -ENOMEM; 4700 goto err_deinit_ppe; 4701 } 4702 } 4703 4704 err = mtk_eth_offload_init(eth); 4705 if (err) 4706 goto err_deinit_ppe; 4707 } 4708 4709 for (i = 0; i < MTK_MAX_DEVS; i++) { 4710 if (!eth->netdev[i]) 4711 continue; 4712 4713 err = register_netdev(eth->netdev[i]); 4714 if (err) { 4715 dev_err(eth->dev, "error bringing up device\n"); 4716 goto err_deinit_ppe; 4717 } else 4718 netif_info(eth, probe, eth->netdev[i], 4719 "mediatek frame engine at 0x%08lx, irq %d\n", 4720 eth->netdev[i]->base_addr, eth->irq[0]); 4721 } 4722 4723 /* we run 2 devices on the same DMA ring so we need a dummy device 4724 * for NAPI to work 4725 */ 4726 init_dummy_netdev(ð->dummy_dev); 4727 netif_napi_add(ð->dummy_dev, ð->tx_napi, mtk_napi_tx); 4728 netif_napi_add(ð->dummy_dev, ð->rx_napi, mtk_napi_rx); 4729 4730 platform_set_drvdata(pdev, eth); 4731 schedule_delayed_work(ð->reset.monitor_work, 4732 MTK_DMA_MONITOR_TIMEOUT); 4733 4734 return 0; 4735 4736 err_deinit_ppe: 4737 mtk_ppe_deinit(eth); 4738 mtk_mdio_cleanup(eth); 4739 err_free_dev: 4740 mtk_free_dev(eth); 4741 err_deinit_hw: 4742 mtk_hw_deinit(eth); 4743 err_wed_exit: 4744 mtk_wed_exit(); 4745 4746 return err; 4747 } 4748 4749 static int mtk_remove(struct platform_device *pdev) 4750 { 4751 struct mtk_eth *eth = platform_get_drvdata(pdev); 4752 struct mtk_mac *mac; 4753 int i; 4754 4755 /* stop all devices to make sure that dma is properly shut down */ 4756 for (i = 0; i < MTK_MAC_COUNT; i++) { 4757 if (!eth->netdev[i]) 4758 continue; 4759 mtk_stop(eth->netdev[i]); 4760 mac = netdev_priv(eth->netdev[i]); 4761 phylink_disconnect_phy(mac->phylink); 4762 } 4763 4764 mtk_wed_exit(); 4765 mtk_hw_deinit(eth); 4766 4767 netif_napi_del(ð->tx_napi); 4768 netif_napi_del(ð->rx_napi); 4769 mtk_cleanup(eth); 4770 mtk_mdio_cleanup(eth); 4771 4772 return 0; 4773 } 4774 4775 static const struct mtk_soc_data mt2701_data = { 4776 .reg_map = &mtk_reg_map, 4777 .caps = MT7623_CAPS | MTK_HWLRO, 4778 .hw_features = MTK_HW_FEATURES, 4779 .required_clks = MT7623_CLKS_BITMAP, 4780 .required_pctl = true, 4781 .txrx = { 4782 .txd_size = sizeof(struct mtk_tx_dma), 4783 .rxd_size = sizeof(struct mtk_rx_dma), 4784 .rx_irq_done_mask = MTK_RX_DONE_INT, 4785 .rx_dma_l4_valid = RX_DMA_L4_VALID, 4786 .dma_max_len = MTK_TX_DMA_BUF_LEN, 4787 .dma_len_offset = 16, 4788 }, 4789 }; 4790 4791 static const struct mtk_soc_data mt7621_data = { 4792 .reg_map = &mtk_reg_map, 4793 .caps = MT7621_CAPS, 4794 .hw_features = MTK_HW_FEATURES, 4795 .required_clks = MT7621_CLKS_BITMAP, 4796 .required_pctl = false, 4797 .offload_version = 1, 4798 .hash_offset = 2, 4799 .foe_entry_size = sizeof(struct mtk_foe_entry) - 16, 4800 .txrx = { 4801 .txd_size = sizeof(struct mtk_tx_dma), 4802 .rxd_size = sizeof(struct mtk_rx_dma), 4803 .rx_irq_done_mask = MTK_RX_DONE_INT, 4804 .rx_dma_l4_valid = RX_DMA_L4_VALID, 4805 .dma_max_len = MTK_TX_DMA_BUF_LEN, 4806 .dma_len_offset = 16, 4807 }, 4808 }; 4809 4810 static const struct mtk_soc_data mt7622_data = { 4811 .reg_map = &mtk_reg_map, 4812 .ana_rgc3 = 0x2028, 4813 .caps = MT7622_CAPS | MTK_HWLRO, 4814 .hw_features = MTK_HW_FEATURES, 4815 .required_clks = MT7622_CLKS_BITMAP, 4816 .required_pctl = false, 4817 .offload_version = 2, 4818 .hash_offset = 2, 4819 .foe_entry_size = sizeof(struct mtk_foe_entry) - 16, 4820 .txrx = { 4821 .txd_size = sizeof(struct mtk_tx_dma), 4822 .rxd_size = sizeof(struct mtk_rx_dma), 4823 .rx_irq_done_mask = MTK_RX_DONE_INT, 4824 .rx_dma_l4_valid = RX_DMA_L4_VALID, 4825 .dma_max_len = MTK_TX_DMA_BUF_LEN, 4826 .dma_len_offset = 16, 4827 }, 4828 }; 4829 4830 static const struct mtk_soc_data mt7623_data = { 4831 .reg_map = &mtk_reg_map, 4832 .caps = MT7623_CAPS | MTK_HWLRO, 4833 .hw_features = MTK_HW_FEATURES, 4834 .required_clks = MT7623_CLKS_BITMAP, 4835 .required_pctl = true, 4836 .offload_version = 1, 4837 .hash_offset = 2, 4838 .foe_entry_size = sizeof(struct mtk_foe_entry) - 16, 4839 .txrx = { 4840 .txd_size = sizeof(struct mtk_tx_dma), 4841 .rxd_size = sizeof(struct mtk_rx_dma), 4842 .rx_irq_done_mask = MTK_RX_DONE_INT, 4843 .rx_dma_l4_valid = RX_DMA_L4_VALID, 4844 .dma_max_len = MTK_TX_DMA_BUF_LEN, 4845 .dma_len_offset = 16, 4846 }, 4847 }; 4848 4849 static const struct mtk_soc_data mt7629_data = { 4850 .reg_map = &mtk_reg_map, 4851 .ana_rgc3 = 0x128, 4852 .caps = MT7629_CAPS | MTK_HWLRO, 4853 .hw_features = MTK_HW_FEATURES, 4854 .required_clks = MT7629_CLKS_BITMAP, 4855 .required_pctl = false, 4856 .txrx = { 4857 .txd_size = sizeof(struct mtk_tx_dma), 4858 .rxd_size = sizeof(struct mtk_rx_dma), 4859 .rx_irq_done_mask = MTK_RX_DONE_INT, 4860 .rx_dma_l4_valid = RX_DMA_L4_VALID, 4861 .dma_max_len = MTK_TX_DMA_BUF_LEN, 4862 .dma_len_offset = 16, 4863 }, 4864 }; 4865 4866 static const struct mtk_soc_data mt7986_data = { 4867 .reg_map = &mt7986_reg_map, 4868 .ana_rgc3 = 0x128, 4869 .caps = MT7986_CAPS, 4870 .hw_features = MTK_HW_FEATURES, 4871 .required_clks = MT7986_CLKS_BITMAP, 4872 .required_pctl = false, 4873 .offload_version = 2, 4874 .hash_offset = 4, 4875 .foe_entry_size = sizeof(struct mtk_foe_entry), 4876 .txrx = { 4877 .txd_size = sizeof(struct mtk_tx_dma_v2), 4878 .rxd_size = sizeof(struct mtk_rx_dma_v2), 4879 .rx_irq_done_mask = MTK_RX_DONE_INT_V2, 4880 .rx_dma_l4_valid = RX_DMA_L4_VALID_V2, 4881 .dma_max_len = MTK_TX_DMA_BUF_LEN_V2, 4882 .dma_len_offset = 8, 4883 }, 4884 }; 4885 4886 static const struct mtk_soc_data rt5350_data = { 4887 .reg_map = &mt7628_reg_map, 4888 .caps = MT7628_CAPS, 4889 .hw_features = MTK_HW_FEATURES_MT7628, 4890 .required_clks = MT7628_CLKS_BITMAP, 4891 .required_pctl = false, 4892 .txrx = { 4893 .txd_size = sizeof(struct mtk_tx_dma), 4894 .rxd_size = sizeof(struct mtk_rx_dma), 4895 .rx_irq_done_mask = MTK_RX_DONE_INT, 4896 .rx_dma_l4_valid = RX_DMA_L4_VALID_PDMA, 4897 .dma_max_len = MTK_TX_DMA_BUF_LEN, 4898 .dma_len_offset = 16, 4899 }, 4900 }; 4901 4902 const struct of_device_id of_mtk_match[] = { 4903 { .compatible = "mediatek,mt2701-eth", .data = &mt2701_data}, 4904 { .compatible = "mediatek,mt7621-eth", .data = &mt7621_data}, 4905 { .compatible = "mediatek,mt7622-eth", .data = &mt7622_data}, 4906 { .compatible = "mediatek,mt7623-eth", .data = &mt7623_data}, 4907 { .compatible = "mediatek,mt7629-eth", .data = &mt7629_data}, 4908 { .compatible = "mediatek,mt7986-eth", .data = &mt7986_data}, 4909 { .compatible = "ralink,rt5350-eth", .data = &rt5350_data}, 4910 {}, 4911 }; 4912 MODULE_DEVICE_TABLE(of, of_mtk_match); 4913 4914 static struct platform_driver mtk_driver = { 4915 .probe = mtk_probe, 4916 .remove = mtk_remove, 4917 .driver = { 4918 .name = "mtk_soc_eth", 4919 .of_match_table = of_mtk_match, 4920 }, 4921 }; 4922 4923 module_platform_driver(mtk_driver); 4924 4925 MODULE_LICENSE("GPL"); 4926 MODULE_AUTHOR("John Crispin <blogic@openwrt.org>"); 4927 MODULE_DESCRIPTION("Ethernet driver for MediaTek SoC"); 4928