1 // SPDX-License-Identifier: GPL-2.0+ 2 3 #include <linux/module.h> 4 #include <linux/if_bridge.h> 5 #include <linux/if_vlan.h> 6 #include <linux/iopoll.h> 7 #include <linux/ip.h> 8 #include <linux/of_platform.h> 9 #include <linux/of_net.h> 10 #include <linux/packing.h> 11 #include <linux/phy/phy.h> 12 #include <linux/reset.h> 13 #include <net/addrconf.h> 14 15 #include "lan966x_main.h" 16 17 #define XTR_EOF_0 0x00000080U 18 #define XTR_EOF_1 0x01000080U 19 #define XTR_EOF_2 0x02000080U 20 #define XTR_EOF_3 0x03000080U 21 #define XTR_PRUNED 0x04000080U 22 #define XTR_ABORT 0x05000080U 23 #define XTR_ESCAPE 0x06000080U 24 #define XTR_NOT_READY 0x07000080U 25 #define XTR_VALID_BYTES(x) (4 - (((x) >> 24) & 3)) 26 27 #define IO_RANGES 2 28 29 static const struct of_device_id lan966x_match[] = { 30 { .compatible = "microchip,lan966x-switch" }, 31 { } 32 }; 33 MODULE_DEVICE_TABLE(of, lan966x_match); 34 35 struct lan966x_main_io_resource { 36 enum lan966x_target id; 37 phys_addr_t offset; 38 int range; 39 }; 40 41 static const struct lan966x_main_io_resource lan966x_main_iomap[] = { 42 { TARGET_CPU, 0xc0000, 0 }, /* 0xe00c0000 */ 43 { TARGET_FDMA, 0xc0400, 0 }, /* 0xe00c0400 */ 44 { TARGET_ORG, 0, 1 }, /* 0xe2000000 */ 45 { TARGET_GCB, 0x4000, 1 }, /* 0xe2004000 */ 46 { TARGET_QS, 0x8000, 1 }, /* 0xe2008000 */ 47 { TARGET_PTP, 0xc000, 1 }, /* 0xe200c000 */ 48 { TARGET_CHIP_TOP, 0x10000, 1 }, /* 0xe2010000 */ 49 { TARGET_REW, 0x14000, 1 }, /* 0xe2014000 */ 50 { TARGET_SYS, 0x28000, 1 }, /* 0xe2028000 */ 51 { TARGET_DEV, 0x34000, 1 }, /* 0xe2034000 */ 52 { TARGET_DEV + 1, 0x38000, 1 }, /* 0xe2038000 */ 53 { TARGET_DEV + 2, 0x3c000, 1 }, /* 0xe203c000 */ 54 { TARGET_DEV + 3, 0x40000, 1 }, /* 0xe2040000 */ 55 { TARGET_DEV + 4, 0x44000, 1 }, /* 0xe2044000 */ 56 { TARGET_DEV + 5, 0x48000, 1 }, /* 0xe2048000 */ 57 { TARGET_DEV + 6, 0x4c000, 1 }, /* 0xe204c000 */ 58 { TARGET_DEV + 7, 0x50000, 1 }, /* 0xe2050000 */ 59 { TARGET_QSYS, 0x100000, 1 }, /* 0xe2100000 */ 60 { TARGET_AFI, 0x120000, 1 }, /* 0xe2120000 */ 61 { TARGET_ANA, 0x140000, 1 }, /* 0xe2140000 */ 62 }; 63 64 static int lan966x_create_targets(struct platform_device *pdev, 65 struct lan966x *lan966x) 66 { 67 struct resource *iores[IO_RANGES]; 68 void __iomem *begin[IO_RANGES]; 69 int idx; 70 71 /* Initially map the entire range and after that update each target to 72 * point inside the region at the correct offset. It is possible that 73 * other devices access the same region so don't add any checks about 74 * this. 75 */ 76 for (idx = 0; idx < IO_RANGES; idx++) { 77 iores[idx] = platform_get_resource(pdev, IORESOURCE_MEM, 78 idx); 79 if (!iores[idx]) { 80 dev_err(&pdev->dev, "Invalid resource\n"); 81 return -EINVAL; 82 } 83 84 begin[idx] = devm_ioremap(&pdev->dev, 85 iores[idx]->start, 86 resource_size(iores[idx])); 87 if (!begin[idx]) { 88 dev_err(&pdev->dev, "Unable to get registers: %s\n", 89 iores[idx]->name); 90 return -ENOMEM; 91 } 92 } 93 94 for (idx = 0; idx < ARRAY_SIZE(lan966x_main_iomap); idx++) { 95 const struct lan966x_main_io_resource *iomap = 96 &lan966x_main_iomap[idx]; 97 98 lan966x->regs[iomap->id] = begin[iomap->range] + iomap->offset; 99 } 100 101 return 0; 102 } 103 104 static bool lan966x_port_unique_address(struct net_device *dev) 105 { 106 struct lan966x_port *port = netdev_priv(dev); 107 struct lan966x *lan966x = port->lan966x; 108 int p; 109 110 for (p = 0; p < lan966x->num_phys_ports; ++p) { 111 port = lan966x->ports[p]; 112 if (!port || port->dev == dev) 113 continue; 114 115 if (ether_addr_equal(dev->dev_addr, port->dev->dev_addr)) 116 return false; 117 } 118 119 return true; 120 } 121 122 static int lan966x_port_set_mac_address(struct net_device *dev, void *p) 123 { 124 struct lan966x_port *port = netdev_priv(dev); 125 struct lan966x *lan966x = port->lan966x; 126 const struct sockaddr *addr = p; 127 int ret; 128 129 if (ether_addr_equal(addr->sa_data, dev->dev_addr)) 130 return 0; 131 132 /* Learn the new net device MAC address in the mac table. */ 133 ret = lan966x_mac_cpu_learn(lan966x, addr->sa_data, HOST_PVID); 134 if (ret) 135 return ret; 136 137 /* If there is another port with the same address as the dev, then don't 138 * delete it from the MAC table 139 */ 140 if (!lan966x_port_unique_address(dev)) 141 goto out; 142 143 /* Then forget the previous one. */ 144 ret = lan966x_mac_cpu_forget(lan966x, dev->dev_addr, HOST_PVID); 145 if (ret) 146 return ret; 147 148 out: 149 eth_hw_addr_set(dev, addr->sa_data); 150 return ret; 151 } 152 153 static int lan966x_port_get_phys_port_name(struct net_device *dev, 154 char *buf, size_t len) 155 { 156 struct lan966x_port *port = netdev_priv(dev); 157 int ret; 158 159 ret = snprintf(buf, len, "p%d", port->chip_port); 160 if (ret >= len) 161 return -EINVAL; 162 163 return 0; 164 } 165 166 static int lan966x_port_open(struct net_device *dev) 167 { 168 struct lan966x_port *port = netdev_priv(dev); 169 struct lan966x *lan966x = port->lan966x; 170 int err; 171 172 /* Enable receiving frames on the port, and activate auto-learning of 173 * MAC addresses. 174 */ 175 lan_rmw(ANA_PORT_CFG_LEARNAUTO_SET(1) | 176 ANA_PORT_CFG_RECV_ENA_SET(1) | 177 ANA_PORT_CFG_PORTID_VAL_SET(port->chip_port), 178 ANA_PORT_CFG_LEARNAUTO | 179 ANA_PORT_CFG_RECV_ENA | 180 ANA_PORT_CFG_PORTID_VAL, 181 lan966x, ANA_PORT_CFG(port->chip_port)); 182 183 err = phylink_fwnode_phy_connect(port->phylink, port->fwnode, 0); 184 if (err) { 185 netdev_err(dev, "Could not attach to PHY\n"); 186 return err; 187 } 188 189 phylink_start(port->phylink); 190 191 return 0; 192 } 193 194 static int lan966x_port_stop(struct net_device *dev) 195 { 196 struct lan966x_port *port = netdev_priv(dev); 197 198 lan966x_port_config_down(port); 199 phylink_stop(port->phylink); 200 phylink_disconnect_phy(port->phylink); 201 202 return 0; 203 } 204 205 static int lan966x_port_inj_status(struct lan966x *lan966x) 206 { 207 return lan_rd(lan966x, QS_INJ_STATUS); 208 } 209 210 static int lan966x_port_inj_ready(struct lan966x *lan966x, u8 grp) 211 { 212 u32 val; 213 214 if (lan_rd(lan966x, QS_INJ_STATUS) & QS_INJ_STATUS_FIFO_RDY_SET(BIT(grp))) 215 return 0; 216 217 return readx_poll_timeout_atomic(lan966x_port_inj_status, lan966x, val, 218 QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp), 219 READL_SLEEP_US, READL_TIMEOUT_US); 220 } 221 222 static int lan966x_port_ifh_xmit(struct sk_buff *skb, 223 __be32 *ifh, 224 struct net_device *dev) 225 { 226 struct lan966x_port *port = netdev_priv(dev); 227 struct lan966x *lan966x = port->lan966x; 228 u32 i, count, last; 229 u8 grp = 0; 230 u32 val; 231 int err; 232 233 val = lan_rd(lan966x, QS_INJ_STATUS); 234 if (!(QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp)) || 235 (QS_INJ_STATUS_WMARK_REACHED_GET(val) & BIT(grp))) 236 goto err; 237 238 /* Write start of frame */ 239 lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) | 240 QS_INJ_CTRL_SOF_SET(1), 241 lan966x, QS_INJ_CTRL(grp)); 242 243 /* Write IFH header */ 244 for (i = 0; i < IFH_LEN; ++i) { 245 /* Wait until the fifo is ready */ 246 err = lan966x_port_inj_ready(lan966x, grp); 247 if (err) 248 goto err; 249 250 lan_wr((__force u32)ifh[i], lan966x, QS_INJ_WR(grp)); 251 } 252 253 /* Write frame */ 254 count = DIV_ROUND_UP(skb->len, 4); 255 last = skb->len % 4; 256 for (i = 0; i < count; ++i) { 257 /* Wait until the fifo is ready */ 258 err = lan966x_port_inj_ready(lan966x, grp); 259 if (err) 260 goto err; 261 262 lan_wr(((u32 *)skb->data)[i], lan966x, QS_INJ_WR(grp)); 263 } 264 265 /* Add padding */ 266 while (i < (LAN966X_BUFFER_MIN_SZ / 4)) { 267 /* Wait until the fifo is ready */ 268 err = lan966x_port_inj_ready(lan966x, grp); 269 if (err) 270 goto err; 271 272 lan_wr(0, lan966x, QS_INJ_WR(grp)); 273 ++i; 274 } 275 276 /* Inidcate EOF and valid bytes in the last word */ 277 lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) | 278 QS_INJ_CTRL_VLD_BYTES_SET(skb->len < LAN966X_BUFFER_MIN_SZ ? 279 0 : last) | 280 QS_INJ_CTRL_EOF_SET(1), 281 lan966x, QS_INJ_CTRL(grp)); 282 283 /* Add dummy CRC */ 284 lan_wr(0, lan966x, QS_INJ_WR(grp)); 285 skb_tx_timestamp(skb); 286 287 dev->stats.tx_packets++; 288 dev->stats.tx_bytes += skb->len; 289 290 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && 291 LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP) 292 return NETDEV_TX_OK; 293 294 dev_consume_skb_any(skb); 295 return NETDEV_TX_OK; 296 297 err: 298 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && 299 LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP) 300 lan966x_ptp_txtstamp_release(port, skb); 301 302 return NETDEV_TX_BUSY; 303 } 304 305 void lan966x_ifh_set_bypass(void *ifh, u64 bypass) 306 { 307 packing(ifh, &bypass, IFH_POS_BYPASS + IFH_WID_BYPASS - 1, 308 IFH_POS_BYPASS, IFH_LEN * 4, PACK, 0); 309 } 310 311 void lan966x_ifh_set_port(void *ifh, u64 bypass) 312 { 313 packing(ifh, &bypass, IFH_POS_DSTS + IFH_WID_DSTS - 1, 314 IFH_POS_DSTS, IFH_LEN * 4, PACK, 0); 315 } 316 317 static void lan966x_ifh_set_qos_class(void *ifh, u64 bypass) 318 { 319 packing(ifh, &bypass, IFH_POS_QOS_CLASS + IFH_WID_QOS_CLASS - 1, 320 IFH_POS_QOS_CLASS, IFH_LEN * 4, PACK, 0); 321 } 322 323 static void lan966x_ifh_set_ipv(void *ifh, u64 bypass) 324 { 325 packing(ifh, &bypass, IFH_POS_IPV + IFH_WID_IPV - 1, 326 IFH_POS_IPV, IFH_LEN * 4, PACK, 0); 327 } 328 329 static void lan966x_ifh_set_vid(void *ifh, u64 vid) 330 { 331 packing(ifh, &vid, IFH_POS_TCI + IFH_WID_TCI - 1, 332 IFH_POS_TCI, IFH_LEN * 4, PACK, 0); 333 } 334 335 static void lan966x_ifh_set_rew_op(void *ifh, u64 rew_op) 336 { 337 packing(ifh, &rew_op, IFH_POS_REW_CMD + IFH_WID_REW_CMD - 1, 338 IFH_POS_REW_CMD, IFH_LEN * 4, PACK, 0); 339 } 340 341 static void lan966x_ifh_set_timestamp(void *ifh, u64 timestamp) 342 { 343 packing(ifh, ×tamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1, 344 IFH_POS_TIMESTAMP, IFH_LEN * 4, PACK, 0); 345 } 346 347 static netdev_tx_t lan966x_port_xmit(struct sk_buff *skb, 348 struct net_device *dev) 349 { 350 struct lan966x_port *port = netdev_priv(dev); 351 struct lan966x *lan966x = port->lan966x; 352 __be32 ifh[IFH_LEN]; 353 int err; 354 355 memset(ifh, 0x0, sizeof(__be32) * IFH_LEN); 356 357 lan966x_ifh_set_bypass(ifh, 1); 358 lan966x_ifh_set_port(ifh, BIT_ULL(port->chip_port)); 359 lan966x_ifh_set_qos_class(ifh, skb->priority >= 7 ? 0x7 : skb->priority); 360 lan966x_ifh_set_ipv(ifh, skb->priority >= 7 ? 0x7 : skb->priority); 361 lan966x_ifh_set_vid(ifh, skb_vlan_tag_get(skb)); 362 363 if (port->lan966x->ptp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) { 364 err = lan966x_ptp_txtstamp_request(port, skb); 365 if (err) 366 return err; 367 368 lan966x_ifh_set_rew_op(ifh, LAN966X_SKB_CB(skb)->rew_op); 369 lan966x_ifh_set_timestamp(ifh, LAN966X_SKB_CB(skb)->ts_id); 370 } 371 372 spin_lock(&lan966x->tx_lock); 373 if (port->lan966x->fdma) 374 err = lan966x_fdma_xmit(skb, ifh, dev); 375 else 376 err = lan966x_port_ifh_xmit(skb, ifh, dev); 377 spin_unlock(&lan966x->tx_lock); 378 379 return err; 380 } 381 382 static int lan966x_port_change_mtu(struct net_device *dev, int new_mtu) 383 { 384 struct lan966x_port *port = netdev_priv(dev); 385 struct lan966x *lan966x = port->lan966x; 386 int old_mtu = dev->mtu; 387 int err; 388 389 lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(LAN966X_HW_MTU(new_mtu)), 390 lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port)); 391 dev->mtu = new_mtu; 392 393 if (!lan966x->fdma) 394 return 0; 395 396 err = lan966x_fdma_change_mtu(lan966x); 397 if (err) { 398 lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(LAN966X_HW_MTU(old_mtu)), 399 lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port)); 400 dev->mtu = old_mtu; 401 } 402 403 return err; 404 } 405 406 static int lan966x_mc_unsync(struct net_device *dev, const unsigned char *addr) 407 { 408 struct lan966x_port *port = netdev_priv(dev); 409 struct lan966x *lan966x = port->lan966x; 410 411 return lan966x_mac_forget(lan966x, addr, HOST_PVID, ENTRYTYPE_LOCKED); 412 } 413 414 static int lan966x_mc_sync(struct net_device *dev, const unsigned char *addr) 415 { 416 struct lan966x_port *port = netdev_priv(dev); 417 struct lan966x *lan966x = port->lan966x; 418 419 return lan966x_mac_cpu_learn(lan966x, addr, HOST_PVID); 420 } 421 422 static void lan966x_port_set_rx_mode(struct net_device *dev) 423 { 424 __dev_mc_sync(dev, lan966x_mc_sync, lan966x_mc_unsync); 425 } 426 427 static int lan966x_port_get_parent_id(struct net_device *dev, 428 struct netdev_phys_item_id *ppid) 429 { 430 struct lan966x_port *port = netdev_priv(dev); 431 struct lan966x *lan966x = port->lan966x; 432 433 ppid->id_len = sizeof(lan966x->base_mac); 434 memcpy(&ppid->id, &lan966x->base_mac, ppid->id_len); 435 436 return 0; 437 } 438 439 static int lan966x_port_ioctl(struct net_device *dev, struct ifreq *ifr, 440 int cmd) 441 { 442 struct lan966x_port *port = netdev_priv(dev); 443 444 if (!phy_has_hwtstamp(dev->phydev) && port->lan966x->ptp) { 445 switch (cmd) { 446 case SIOCSHWTSTAMP: 447 return lan966x_ptp_hwtstamp_set(port, ifr); 448 case SIOCGHWTSTAMP: 449 return lan966x_ptp_hwtstamp_get(port, ifr); 450 } 451 } 452 453 if (!dev->phydev) 454 return -ENODEV; 455 456 return phy_mii_ioctl(dev->phydev, ifr, cmd); 457 } 458 459 static const struct net_device_ops lan966x_port_netdev_ops = { 460 .ndo_open = lan966x_port_open, 461 .ndo_stop = lan966x_port_stop, 462 .ndo_start_xmit = lan966x_port_xmit, 463 .ndo_change_mtu = lan966x_port_change_mtu, 464 .ndo_set_rx_mode = lan966x_port_set_rx_mode, 465 .ndo_get_phys_port_name = lan966x_port_get_phys_port_name, 466 .ndo_get_stats64 = lan966x_stats_get, 467 .ndo_set_mac_address = lan966x_port_set_mac_address, 468 .ndo_get_port_parent_id = lan966x_port_get_parent_id, 469 .ndo_eth_ioctl = lan966x_port_ioctl, 470 .ndo_setup_tc = lan966x_tc_setup, 471 .ndo_bpf = lan966x_xdp, 472 .ndo_xdp_xmit = lan966x_xdp_xmit, 473 }; 474 475 bool lan966x_netdevice_check(const struct net_device *dev) 476 { 477 return dev->netdev_ops == &lan966x_port_netdev_ops; 478 } 479 480 bool lan966x_hw_offload(struct lan966x *lan966x, u32 port, struct sk_buff *skb) 481 { 482 u32 val; 483 484 /* The IGMP and MLD frames are not forward by the HW if 485 * multicast snooping is enabled, therefor don't mark as 486 * offload to allow the SW to forward the frames accordingly. 487 */ 488 val = lan_rd(lan966x, ANA_CPU_FWD_CFG(port)); 489 if (!(val & (ANA_CPU_FWD_CFG_IGMP_REDIR_ENA | 490 ANA_CPU_FWD_CFG_MLD_REDIR_ENA))) 491 return true; 492 493 if (eth_type_vlan(skb->protocol)) { 494 skb = skb_vlan_untag(skb); 495 if (unlikely(!skb)) 496 return false; 497 } 498 499 if (skb->protocol == htons(ETH_P_IP) && 500 ip_hdr(skb)->protocol == IPPROTO_IGMP) 501 return false; 502 503 if (IS_ENABLED(CONFIG_IPV6) && 504 skb->protocol == htons(ETH_P_IPV6) && 505 ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) && 506 !ipv6_mc_check_mld(skb)) 507 return false; 508 509 return true; 510 } 511 512 static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp) 513 { 514 return lan_rd(lan966x, QS_XTR_RD(grp)); 515 } 516 517 static int lan966x_port_xtr_ready(struct lan966x *lan966x, u8 grp) 518 { 519 u32 val; 520 521 return read_poll_timeout(lan966x_port_xtr_status, val, 522 val != XTR_NOT_READY, 523 READL_SLEEP_US, READL_TIMEOUT_US, false, 524 lan966x, grp); 525 } 526 527 static int lan966x_rx_frame_word(struct lan966x *lan966x, u8 grp, u32 *rval) 528 { 529 u32 bytes_valid; 530 u32 val; 531 int err; 532 533 val = lan_rd(lan966x, QS_XTR_RD(grp)); 534 if (val == XTR_NOT_READY) { 535 err = lan966x_port_xtr_ready(lan966x, grp); 536 if (err) 537 return -EIO; 538 } 539 540 switch (val) { 541 case XTR_ABORT: 542 return -EIO; 543 case XTR_EOF_0: 544 case XTR_EOF_1: 545 case XTR_EOF_2: 546 case XTR_EOF_3: 547 case XTR_PRUNED: 548 bytes_valid = XTR_VALID_BYTES(val); 549 val = lan_rd(lan966x, QS_XTR_RD(grp)); 550 if (val == XTR_ESCAPE) 551 *rval = lan_rd(lan966x, QS_XTR_RD(grp)); 552 else 553 *rval = val; 554 555 return bytes_valid; 556 case XTR_ESCAPE: 557 *rval = lan_rd(lan966x, QS_XTR_RD(grp)); 558 559 return 4; 560 default: 561 *rval = val; 562 563 return 4; 564 } 565 } 566 567 void lan966x_ifh_get_src_port(void *ifh, u64 *src_port) 568 { 569 packing(ifh, src_port, IFH_POS_SRCPORT + IFH_WID_SRCPORT - 1, 570 IFH_POS_SRCPORT, IFH_LEN * 4, UNPACK, 0); 571 } 572 573 static void lan966x_ifh_get_len(void *ifh, u64 *len) 574 { 575 packing(ifh, len, IFH_POS_LEN + IFH_WID_LEN - 1, 576 IFH_POS_LEN, IFH_LEN * 4, UNPACK, 0); 577 } 578 579 void lan966x_ifh_get_timestamp(void *ifh, u64 *timestamp) 580 { 581 packing(ifh, timestamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1, 582 IFH_POS_TIMESTAMP, IFH_LEN * 4, UNPACK, 0); 583 } 584 585 static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args) 586 { 587 struct lan966x *lan966x = args; 588 int i, grp = 0, err = 0; 589 590 if (!(lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp))) 591 return IRQ_NONE; 592 593 do { 594 u64 src_port, len, timestamp; 595 struct net_device *dev; 596 struct sk_buff *skb; 597 int sz = 0, buf_len; 598 u32 ifh[IFH_LEN]; 599 u32 *buf; 600 u32 val; 601 602 for (i = 0; i < IFH_LEN; i++) { 603 err = lan966x_rx_frame_word(lan966x, grp, &ifh[i]); 604 if (err != 4) 605 goto recover; 606 } 607 608 err = 0; 609 610 lan966x_ifh_get_src_port(ifh, &src_port); 611 lan966x_ifh_get_len(ifh, &len); 612 lan966x_ifh_get_timestamp(ifh, ×tamp); 613 614 WARN_ON(src_port >= lan966x->num_phys_ports); 615 616 dev = lan966x->ports[src_port]->dev; 617 skb = netdev_alloc_skb(dev, len); 618 if (unlikely(!skb)) { 619 netdev_err(dev, "Unable to allocate sk_buff\n"); 620 err = -ENOMEM; 621 break; 622 } 623 buf_len = len - ETH_FCS_LEN; 624 buf = (u32 *)skb_put(skb, buf_len); 625 626 len = 0; 627 do { 628 sz = lan966x_rx_frame_word(lan966x, grp, &val); 629 if (sz < 0) { 630 kfree_skb(skb); 631 goto recover; 632 } 633 634 *buf++ = val; 635 len += sz; 636 } while (len < buf_len); 637 638 /* Read the FCS */ 639 sz = lan966x_rx_frame_word(lan966x, grp, &val); 640 if (sz < 0) { 641 kfree_skb(skb); 642 goto recover; 643 } 644 645 /* Update the statistics if part of the FCS was read before */ 646 len -= ETH_FCS_LEN - sz; 647 648 if (unlikely(dev->features & NETIF_F_RXFCS)) { 649 buf = (u32 *)skb_put(skb, ETH_FCS_LEN); 650 *buf = val; 651 } 652 653 lan966x_ptp_rxtstamp(lan966x, skb, timestamp); 654 skb->protocol = eth_type_trans(skb, dev); 655 656 if (lan966x->bridge_mask & BIT(src_port)) { 657 skb->offload_fwd_mark = 1; 658 659 skb_reset_network_header(skb); 660 if (!lan966x_hw_offload(lan966x, src_port, skb)) 661 skb->offload_fwd_mark = 0; 662 } 663 664 if (!skb_defer_rx_timestamp(skb)) 665 netif_rx(skb); 666 667 dev->stats.rx_bytes += len; 668 dev->stats.rx_packets++; 669 670 recover: 671 if (sz < 0 || err) 672 lan_rd(lan966x, QS_XTR_RD(grp)); 673 674 } while (lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp)); 675 676 return IRQ_HANDLED; 677 } 678 679 static irqreturn_t lan966x_ana_irq_handler(int irq, void *args) 680 { 681 struct lan966x *lan966x = args; 682 683 return lan966x_mac_irq_handler(lan966x); 684 } 685 686 static void lan966x_cleanup_ports(struct lan966x *lan966x) 687 { 688 struct lan966x_port *port; 689 int p; 690 691 for (p = 0; p < lan966x->num_phys_ports; p++) { 692 port = lan966x->ports[p]; 693 if (!port) 694 continue; 695 696 if (port->dev) 697 unregister_netdev(port->dev); 698 699 lan966x_xdp_port_deinit(port); 700 if (lan966x->fdma && lan966x->fdma_ndev == port->dev) 701 lan966x_fdma_netdev_deinit(lan966x, port->dev); 702 703 if (port->phylink) { 704 rtnl_lock(); 705 lan966x_port_stop(port->dev); 706 rtnl_unlock(); 707 phylink_destroy(port->phylink); 708 port->phylink = NULL; 709 } 710 711 if (port->fwnode) 712 fwnode_handle_put(port->fwnode); 713 } 714 715 disable_irq(lan966x->xtr_irq); 716 lan966x->xtr_irq = -ENXIO; 717 718 if (lan966x->ana_irq > 0) { 719 disable_irq(lan966x->ana_irq); 720 lan966x->ana_irq = -ENXIO; 721 } 722 723 if (lan966x->fdma) 724 devm_free_irq(lan966x->dev, lan966x->fdma_irq, lan966x); 725 726 if (lan966x->ptp_irq > 0) 727 devm_free_irq(lan966x->dev, lan966x->ptp_irq, lan966x); 728 729 if (lan966x->ptp_ext_irq > 0) 730 devm_free_irq(lan966x->dev, lan966x->ptp_ext_irq, lan966x); 731 } 732 733 static int lan966x_probe_port(struct lan966x *lan966x, u32 p, 734 phy_interface_t phy_mode, 735 struct fwnode_handle *portnp) 736 { 737 struct lan966x_port *port; 738 struct phylink *phylink; 739 struct net_device *dev; 740 int err; 741 742 if (p >= lan966x->num_phys_ports) 743 return -EINVAL; 744 745 dev = devm_alloc_etherdev_mqs(lan966x->dev, 746 sizeof(struct lan966x_port), 747 NUM_PRIO_QUEUES, 1); 748 if (!dev) 749 return -ENOMEM; 750 751 SET_NETDEV_DEV(dev, lan966x->dev); 752 port = netdev_priv(dev); 753 port->dev = dev; 754 port->lan966x = lan966x; 755 port->chip_port = p; 756 lan966x->ports[p] = port; 757 758 dev->max_mtu = ETH_MAX_MTU; 759 760 dev->netdev_ops = &lan966x_port_netdev_ops; 761 dev->ethtool_ops = &lan966x_ethtool_ops; 762 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 763 NETIF_F_HW_VLAN_STAG_TX | 764 NETIF_F_HW_TC; 765 dev->hw_features |= NETIF_F_HW_TC; 766 dev->needed_headroom = IFH_LEN_BYTES; 767 768 eth_hw_addr_gen(dev, lan966x->base_mac, p + 1); 769 770 lan966x_mac_learn(lan966x, PGID_CPU, dev->dev_addr, HOST_PVID, 771 ENTRYTYPE_LOCKED); 772 773 port->phylink_config.dev = &port->dev->dev; 774 port->phylink_config.type = PHYLINK_NETDEV; 775 port->phylink_pcs.poll = true; 776 port->phylink_pcs.ops = &lan966x_phylink_pcs_ops; 777 778 port->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | 779 MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD; 780 781 phy_interface_set_rgmii(port->phylink_config.supported_interfaces); 782 __set_bit(PHY_INTERFACE_MODE_MII, 783 port->phylink_config.supported_interfaces); 784 __set_bit(PHY_INTERFACE_MODE_GMII, 785 port->phylink_config.supported_interfaces); 786 __set_bit(PHY_INTERFACE_MODE_SGMII, 787 port->phylink_config.supported_interfaces); 788 __set_bit(PHY_INTERFACE_MODE_QSGMII, 789 port->phylink_config.supported_interfaces); 790 __set_bit(PHY_INTERFACE_MODE_QUSGMII, 791 port->phylink_config.supported_interfaces); 792 __set_bit(PHY_INTERFACE_MODE_1000BASEX, 793 port->phylink_config.supported_interfaces); 794 __set_bit(PHY_INTERFACE_MODE_2500BASEX, 795 port->phylink_config.supported_interfaces); 796 797 phylink = phylink_create(&port->phylink_config, 798 portnp, 799 phy_mode, 800 &lan966x_phylink_mac_ops); 801 if (IS_ERR(phylink)) { 802 port->dev = NULL; 803 return PTR_ERR(phylink); 804 } 805 806 port->phylink = phylink; 807 808 err = register_netdev(dev); 809 if (err) { 810 dev_err(lan966x->dev, "register_netdev failed\n"); 811 return err; 812 } 813 814 lan966x_vlan_port_set_vlan_aware(port, 0); 815 lan966x_vlan_port_set_vid(port, HOST_PVID, false, false); 816 lan966x_vlan_port_apply(port); 817 818 return 0; 819 } 820 821 static void lan966x_init(struct lan966x *lan966x) 822 { 823 u32 p, i; 824 825 /* MAC table initialization */ 826 lan966x_mac_init(lan966x); 827 828 lan966x_vlan_init(lan966x); 829 830 /* Flush queues */ 831 lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) | 832 GENMASK(1, 0), 833 lan966x, QS_XTR_FLUSH); 834 835 /* Allow to drain */ 836 mdelay(1); 837 838 /* All Queues normal */ 839 lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) & 840 ~(GENMASK(1, 0)), 841 lan966x, QS_XTR_FLUSH); 842 843 /* Set MAC age time to default value, the entry is aged after 844 * 2 * AGE_PERIOD 845 */ 846 lan_wr(ANA_AUTOAGE_AGE_PERIOD_SET(BR_DEFAULT_AGEING_TIME / 2 / HZ), 847 lan966x, ANA_AUTOAGE); 848 849 /* Disable learning for frames discarded by VLAN ingress filtering */ 850 lan_rmw(ANA_ADVLEARN_VLAN_CHK_SET(1), 851 ANA_ADVLEARN_VLAN_CHK, 852 lan966x, ANA_ADVLEARN); 853 854 /* Setup frame ageing - "2 sec" - The unit is 6.5 us on lan966x */ 855 lan_wr(SYS_FRM_AGING_AGE_TX_ENA_SET(1) | 856 (20000000 / 65), 857 lan966x, SYS_FRM_AGING); 858 859 /* Map the 8 CPU extraction queues to CPU port */ 860 lan_wr(0, lan966x, QSYS_CPU_GROUP_MAP); 861 862 /* Do byte-swap and expect status after last data word 863 * Extraction: Mode: manual extraction) | Byte_swap 864 */ 865 lan_wr(QS_XTR_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) | 866 QS_XTR_GRP_CFG_BYTE_SWAP_SET(1), 867 lan966x, QS_XTR_GRP_CFG(0)); 868 869 /* Injection: Mode: manual injection | Byte_swap */ 870 lan_wr(QS_INJ_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) | 871 QS_INJ_GRP_CFG_BYTE_SWAP_SET(1), 872 lan966x, QS_INJ_GRP_CFG(0)); 873 874 lan_rmw(QS_INJ_CTRL_GAP_SIZE_SET(0), 875 QS_INJ_CTRL_GAP_SIZE, 876 lan966x, QS_INJ_CTRL(0)); 877 878 /* Enable IFH insertion/parsing on CPU ports */ 879 lan_wr(SYS_PORT_MODE_INCL_INJ_HDR_SET(1) | 880 SYS_PORT_MODE_INCL_XTR_HDR_SET(1), 881 lan966x, SYS_PORT_MODE(CPU_PORT)); 882 883 /* Setup flooding PGIDs */ 884 lan_wr(ANA_FLOODING_IPMC_FLD_MC4_DATA_SET(PGID_MCIPV4) | 885 ANA_FLOODING_IPMC_FLD_MC4_CTRL_SET(PGID_MC) | 886 ANA_FLOODING_IPMC_FLD_MC6_DATA_SET(PGID_MCIPV6) | 887 ANA_FLOODING_IPMC_FLD_MC6_CTRL_SET(PGID_MC), 888 lan966x, ANA_FLOODING_IPMC); 889 890 /* There are 8 priorities */ 891 for (i = 0; i < 8; ++i) 892 lan_rmw(ANA_FLOODING_FLD_MULTICAST_SET(PGID_MC) | 893 ANA_FLOODING_FLD_UNICAST_SET(PGID_UC) | 894 ANA_FLOODING_FLD_BROADCAST_SET(PGID_BC), 895 ANA_FLOODING_FLD_MULTICAST | 896 ANA_FLOODING_FLD_UNICAST | 897 ANA_FLOODING_FLD_BROADCAST, 898 lan966x, ANA_FLOODING(i)); 899 900 for (i = 0; i < PGID_ENTRIES; ++i) 901 /* Set all the entries to obey VLAN_VLAN */ 902 lan_rmw(ANA_PGID_CFG_OBEY_VLAN_SET(1), 903 ANA_PGID_CFG_OBEY_VLAN, 904 lan966x, ANA_PGID_CFG(i)); 905 906 for (p = 0; p < lan966x->num_phys_ports; p++) { 907 /* Disable bridging by default */ 908 lan_rmw(ANA_PGID_PGID_SET(0x0), 909 ANA_PGID_PGID, 910 lan966x, ANA_PGID(p + PGID_SRC)); 911 912 /* Do not forward BPDU frames to the front ports and copy them 913 * to CPU 914 */ 915 lan_wr(0xffff, lan966x, ANA_CPU_FWD_BPDU_CFG(p)); 916 } 917 918 /* Set source buffer size for each priority and each port to 1500 bytes */ 919 for (i = 0; i <= QSYS_Q_RSRV; ++i) { 920 lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(i)); 921 lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(512 + i)); 922 } 923 924 /* Enable switching to/from cpu port */ 925 lan_wr(QSYS_SW_PORT_MODE_PORT_ENA_SET(1) | 926 QSYS_SW_PORT_MODE_SCH_NEXT_CFG_SET(1) | 927 QSYS_SW_PORT_MODE_INGRESS_DROP_MODE_SET(1), 928 lan966x, QSYS_SW_PORT_MODE(CPU_PORT)); 929 930 /* Configure and enable the CPU port */ 931 lan_rmw(ANA_PGID_PGID_SET(0), 932 ANA_PGID_PGID, 933 lan966x, ANA_PGID(CPU_PORT)); 934 lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT)), 935 ANA_PGID_PGID, 936 lan966x, ANA_PGID(PGID_CPU)); 937 938 /* Multicast to all other ports */ 939 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 940 ANA_PGID_PGID, 941 lan966x, ANA_PGID(PGID_MC)); 942 943 /* This will be controlled by mrouter ports */ 944 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 945 ANA_PGID_PGID, 946 lan966x, ANA_PGID(PGID_MCIPV4)); 947 948 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 949 ANA_PGID_PGID, 950 lan966x, ANA_PGID(PGID_MCIPV6)); 951 952 /* Unicast to all other ports */ 953 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 954 ANA_PGID_PGID, 955 lan966x, ANA_PGID(PGID_UC)); 956 957 /* Broadcast to the CPU port and to other ports */ 958 lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT) | GENMASK(lan966x->num_phys_ports - 1, 0)), 959 ANA_PGID_PGID, 960 lan966x, ANA_PGID(PGID_BC)); 961 962 lan_wr(REW_PORT_CFG_NO_REWRITE_SET(1), 963 lan966x, REW_PORT_CFG(CPU_PORT)); 964 965 lan_rmw(ANA_ANAINTR_INTR_ENA_SET(1), 966 ANA_ANAINTR_INTR_ENA, 967 lan966x, ANA_ANAINTR); 968 969 spin_lock_init(&lan966x->tx_lock); 970 971 lan966x_taprio_init(lan966x); 972 } 973 974 static int lan966x_ram_init(struct lan966x *lan966x) 975 { 976 return lan_rd(lan966x, SYS_RAM_INIT); 977 } 978 979 static int lan966x_reset_switch(struct lan966x *lan966x) 980 { 981 struct reset_control *switch_reset; 982 int val = 0; 983 int ret; 984 985 switch_reset = devm_reset_control_get_optional_shared(lan966x->dev, 986 "switch"); 987 if (IS_ERR(switch_reset)) 988 return dev_err_probe(lan966x->dev, PTR_ERR(switch_reset), 989 "Could not obtain switch reset"); 990 991 reset_control_reset(switch_reset); 992 993 lan_wr(SYS_RESET_CFG_CORE_ENA_SET(0), lan966x, SYS_RESET_CFG); 994 lan_wr(SYS_RAM_INIT_RAM_INIT_SET(1), lan966x, SYS_RAM_INIT); 995 ret = readx_poll_timeout(lan966x_ram_init, lan966x, 996 val, (val & BIT(1)) == 0, READL_SLEEP_US, 997 READL_TIMEOUT_US); 998 if (ret) 999 return ret; 1000 1001 lan_wr(SYS_RESET_CFG_CORE_ENA_SET(1), lan966x, SYS_RESET_CFG); 1002 1003 return 0; 1004 } 1005 1006 static int lan966x_probe(struct platform_device *pdev) 1007 { 1008 struct fwnode_handle *ports, *portnp; 1009 struct lan966x *lan966x; 1010 u8 mac_addr[ETH_ALEN]; 1011 int err; 1012 1013 lan966x = devm_kzalloc(&pdev->dev, sizeof(*lan966x), GFP_KERNEL); 1014 if (!lan966x) 1015 return -ENOMEM; 1016 1017 platform_set_drvdata(pdev, lan966x); 1018 lan966x->dev = &pdev->dev; 1019 1020 if (!device_get_mac_address(&pdev->dev, mac_addr)) { 1021 ether_addr_copy(lan966x->base_mac, mac_addr); 1022 } else { 1023 pr_info("MAC addr was not set, use random MAC\n"); 1024 eth_random_addr(lan966x->base_mac); 1025 lan966x->base_mac[5] &= 0xf0; 1026 } 1027 1028 ports = device_get_named_child_node(&pdev->dev, "ethernet-ports"); 1029 if (!ports) 1030 return dev_err_probe(&pdev->dev, -ENODEV, 1031 "no ethernet-ports child found\n"); 1032 1033 err = lan966x_create_targets(pdev, lan966x); 1034 if (err) 1035 return dev_err_probe(&pdev->dev, err, 1036 "Failed to create targets"); 1037 1038 err = lan966x_reset_switch(lan966x); 1039 if (err) 1040 return dev_err_probe(&pdev->dev, err, "Reset failed"); 1041 1042 lan966x->num_phys_ports = NUM_PHYS_PORTS; 1043 lan966x->ports = devm_kcalloc(&pdev->dev, lan966x->num_phys_ports, 1044 sizeof(struct lan966x_port *), 1045 GFP_KERNEL); 1046 if (!lan966x->ports) 1047 return -ENOMEM; 1048 1049 /* There QS system has 32KB of memory */ 1050 lan966x->shared_queue_sz = LAN966X_BUFFER_MEMORY; 1051 1052 /* set irq */ 1053 lan966x->xtr_irq = platform_get_irq_byname(pdev, "xtr"); 1054 if (lan966x->xtr_irq <= 0) 1055 return -EINVAL; 1056 1057 err = devm_request_threaded_irq(&pdev->dev, lan966x->xtr_irq, NULL, 1058 lan966x_xtr_irq_handler, IRQF_ONESHOT, 1059 "frame extraction", lan966x); 1060 if (err) { 1061 pr_err("Unable to use xtr irq"); 1062 return -ENODEV; 1063 } 1064 1065 lan966x->ana_irq = platform_get_irq_byname(pdev, "ana"); 1066 if (lan966x->ana_irq > 0) { 1067 err = devm_request_threaded_irq(&pdev->dev, lan966x->ana_irq, NULL, 1068 lan966x_ana_irq_handler, IRQF_ONESHOT, 1069 "ana irq", lan966x); 1070 if (err) 1071 return dev_err_probe(&pdev->dev, err, "Unable to use ana irq"); 1072 } 1073 1074 lan966x->ptp_irq = platform_get_irq_byname(pdev, "ptp"); 1075 if (lan966x->ptp_irq > 0) { 1076 err = devm_request_threaded_irq(&pdev->dev, lan966x->ptp_irq, NULL, 1077 lan966x_ptp_irq_handler, IRQF_ONESHOT, 1078 "ptp irq", lan966x); 1079 if (err) 1080 return dev_err_probe(&pdev->dev, err, "Unable to use ptp irq"); 1081 1082 lan966x->ptp = 1; 1083 } 1084 1085 lan966x->fdma_irq = platform_get_irq_byname(pdev, "fdma"); 1086 if (lan966x->fdma_irq > 0) { 1087 err = devm_request_irq(&pdev->dev, lan966x->fdma_irq, 1088 lan966x_fdma_irq_handler, 0, 1089 "fdma irq", lan966x); 1090 if (err) 1091 return dev_err_probe(&pdev->dev, err, "Unable to use fdma irq"); 1092 1093 lan966x->fdma = true; 1094 } 1095 1096 if (lan966x->ptp) { 1097 lan966x->ptp_ext_irq = platform_get_irq_byname(pdev, "ptp-ext"); 1098 if (lan966x->ptp_ext_irq > 0) { 1099 err = devm_request_threaded_irq(&pdev->dev, 1100 lan966x->ptp_ext_irq, NULL, 1101 lan966x_ptp_ext_irq_handler, 1102 IRQF_ONESHOT, 1103 "ptp-ext irq", lan966x); 1104 if (err) 1105 return dev_err_probe(&pdev->dev, err, 1106 "Unable to use ptp-ext irq"); 1107 } 1108 } 1109 1110 /* init switch */ 1111 lan966x_init(lan966x); 1112 lan966x_stats_init(lan966x); 1113 1114 /* go over the child nodes */ 1115 fwnode_for_each_available_child_node(ports, portnp) { 1116 phy_interface_t phy_mode; 1117 struct phy *serdes; 1118 u32 p; 1119 1120 if (fwnode_property_read_u32(portnp, "reg", &p)) 1121 continue; 1122 1123 phy_mode = fwnode_get_phy_mode(portnp); 1124 err = lan966x_probe_port(lan966x, p, phy_mode, portnp); 1125 if (err) 1126 goto cleanup_ports; 1127 1128 /* Read needed configuration */ 1129 lan966x->ports[p]->config.portmode = phy_mode; 1130 lan966x->ports[p]->fwnode = fwnode_handle_get(portnp); 1131 1132 serdes = devm_of_phy_get(lan966x->dev, to_of_node(portnp), NULL); 1133 if (PTR_ERR(serdes) == -ENODEV) 1134 serdes = NULL; 1135 if (IS_ERR(serdes)) { 1136 err = PTR_ERR(serdes); 1137 goto cleanup_ports; 1138 } 1139 lan966x->ports[p]->serdes = serdes; 1140 1141 lan966x_port_init(lan966x->ports[p]); 1142 err = lan966x_xdp_port_init(lan966x->ports[p]); 1143 if (err) 1144 goto cleanup_ports; 1145 } 1146 1147 lan966x_mdb_init(lan966x); 1148 err = lan966x_fdb_init(lan966x); 1149 if (err) 1150 goto cleanup_ports; 1151 1152 err = lan966x_ptp_init(lan966x); 1153 if (err) 1154 goto cleanup_fdb; 1155 1156 err = lan966x_fdma_init(lan966x); 1157 if (err) 1158 goto cleanup_ptp; 1159 1160 return 0; 1161 1162 cleanup_ptp: 1163 lan966x_ptp_deinit(lan966x); 1164 1165 cleanup_fdb: 1166 lan966x_fdb_deinit(lan966x); 1167 1168 cleanup_ports: 1169 fwnode_handle_put(portnp); 1170 1171 lan966x_cleanup_ports(lan966x); 1172 1173 cancel_delayed_work_sync(&lan966x->stats_work); 1174 destroy_workqueue(lan966x->stats_queue); 1175 mutex_destroy(&lan966x->stats_lock); 1176 1177 return err; 1178 } 1179 1180 static int lan966x_remove(struct platform_device *pdev) 1181 { 1182 struct lan966x *lan966x = platform_get_drvdata(pdev); 1183 1184 lan966x_taprio_deinit(lan966x); 1185 lan966x_fdma_deinit(lan966x); 1186 lan966x_cleanup_ports(lan966x); 1187 1188 cancel_delayed_work_sync(&lan966x->stats_work); 1189 destroy_workqueue(lan966x->stats_queue); 1190 mutex_destroy(&lan966x->stats_lock); 1191 1192 lan966x_mac_purge_entries(lan966x); 1193 lan966x_mdb_deinit(lan966x); 1194 lan966x_fdb_deinit(lan966x); 1195 lan966x_ptp_deinit(lan966x); 1196 1197 return 0; 1198 } 1199 1200 static struct platform_driver lan966x_driver = { 1201 .probe = lan966x_probe, 1202 .remove = lan966x_remove, 1203 .driver = { 1204 .name = "lan966x-switch", 1205 .of_match_table = lan966x_match, 1206 }, 1207 }; 1208 1209 static int __init lan966x_switch_driver_init(void) 1210 { 1211 int ret; 1212 1213 lan966x_register_notifier_blocks(); 1214 1215 ret = platform_driver_register(&lan966x_driver); 1216 if (ret) 1217 goto err; 1218 1219 return 0; 1220 1221 err: 1222 lan966x_unregister_notifier_blocks(); 1223 return ret; 1224 } 1225 1226 static void __exit lan966x_switch_driver_exit(void) 1227 { 1228 platform_driver_unregister(&lan966x_driver); 1229 lan966x_unregister_notifier_blocks(); 1230 } 1231 1232 module_init(lan966x_switch_driver_init); 1233 module_exit(lan966x_switch_driver_exit); 1234 1235 MODULE_DESCRIPTION("Microchip LAN966X switch driver"); 1236 MODULE_AUTHOR("Horatiu Vultur <horatiu.vultur@microchip.com>"); 1237 MODULE_LICENSE("Dual MIT/GPL"); 1238