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 static 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 static 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 }; 473 474 bool lan966x_netdevice_check(const struct net_device *dev) 475 { 476 return dev->netdev_ops == &lan966x_port_netdev_ops; 477 } 478 479 bool lan966x_hw_offload(struct lan966x *lan966x, u32 port, struct sk_buff *skb) 480 { 481 u32 val; 482 483 /* The IGMP and MLD frames are not forward by the HW if 484 * multicast snooping is enabled, therefor don't mark as 485 * offload to allow the SW to forward the frames accordingly. 486 */ 487 val = lan_rd(lan966x, ANA_CPU_FWD_CFG(port)); 488 if (!(val & (ANA_CPU_FWD_CFG_IGMP_REDIR_ENA | 489 ANA_CPU_FWD_CFG_MLD_REDIR_ENA))) 490 return true; 491 492 if (eth_type_vlan(skb->protocol)) { 493 skb = skb_vlan_untag(skb); 494 if (unlikely(!skb)) 495 return false; 496 } 497 498 if (skb->protocol == htons(ETH_P_IP) && 499 ip_hdr(skb)->protocol == IPPROTO_IGMP) 500 return false; 501 502 if (IS_ENABLED(CONFIG_IPV6) && 503 skb->protocol == htons(ETH_P_IPV6) && 504 ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) && 505 !ipv6_mc_check_mld(skb)) 506 return false; 507 508 return true; 509 } 510 511 static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp) 512 { 513 return lan_rd(lan966x, QS_XTR_RD(grp)); 514 } 515 516 static int lan966x_port_xtr_ready(struct lan966x *lan966x, u8 grp) 517 { 518 u32 val; 519 520 return read_poll_timeout(lan966x_port_xtr_status, val, 521 val != XTR_NOT_READY, 522 READL_SLEEP_US, READL_TIMEOUT_US, false, 523 lan966x, grp); 524 } 525 526 static int lan966x_rx_frame_word(struct lan966x *lan966x, u8 grp, u32 *rval) 527 { 528 u32 bytes_valid; 529 u32 val; 530 int err; 531 532 val = lan_rd(lan966x, QS_XTR_RD(grp)); 533 if (val == XTR_NOT_READY) { 534 err = lan966x_port_xtr_ready(lan966x, grp); 535 if (err) 536 return -EIO; 537 } 538 539 switch (val) { 540 case XTR_ABORT: 541 return -EIO; 542 case XTR_EOF_0: 543 case XTR_EOF_1: 544 case XTR_EOF_2: 545 case XTR_EOF_3: 546 case XTR_PRUNED: 547 bytes_valid = XTR_VALID_BYTES(val); 548 val = lan_rd(lan966x, QS_XTR_RD(grp)); 549 if (val == XTR_ESCAPE) 550 *rval = lan_rd(lan966x, QS_XTR_RD(grp)); 551 else 552 *rval = val; 553 554 return bytes_valid; 555 case XTR_ESCAPE: 556 *rval = lan_rd(lan966x, QS_XTR_RD(grp)); 557 558 return 4; 559 default: 560 *rval = val; 561 562 return 4; 563 } 564 } 565 566 void lan966x_ifh_get_src_port(void *ifh, u64 *src_port) 567 { 568 packing(ifh, src_port, IFH_POS_SRCPORT + IFH_WID_SRCPORT - 1, 569 IFH_POS_SRCPORT, IFH_LEN * 4, UNPACK, 0); 570 } 571 572 static void lan966x_ifh_get_len(void *ifh, u64 *len) 573 { 574 packing(ifh, len, IFH_POS_LEN + IFH_WID_LEN - 1, 575 IFH_POS_LEN, IFH_LEN * 4, UNPACK, 0); 576 } 577 578 void lan966x_ifh_get_timestamp(void *ifh, u64 *timestamp) 579 { 580 packing(ifh, timestamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1, 581 IFH_POS_TIMESTAMP, IFH_LEN * 4, UNPACK, 0); 582 } 583 584 static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args) 585 { 586 struct lan966x *lan966x = args; 587 int i, grp = 0, err = 0; 588 589 if (!(lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp))) 590 return IRQ_NONE; 591 592 do { 593 u64 src_port, len, timestamp; 594 struct net_device *dev; 595 struct sk_buff *skb; 596 int sz = 0, buf_len; 597 u32 ifh[IFH_LEN]; 598 u32 *buf; 599 u32 val; 600 601 for (i = 0; i < IFH_LEN; i++) { 602 err = lan966x_rx_frame_word(lan966x, grp, &ifh[i]); 603 if (err != 4) 604 goto recover; 605 } 606 607 err = 0; 608 609 lan966x_ifh_get_src_port(ifh, &src_port); 610 lan966x_ifh_get_len(ifh, &len); 611 lan966x_ifh_get_timestamp(ifh, ×tamp); 612 613 WARN_ON(src_port >= lan966x->num_phys_ports); 614 615 dev = lan966x->ports[src_port]->dev; 616 skb = netdev_alloc_skb(dev, len); 617 if (unlikely(!skb)) { 618 netdev_err(dev, "Unable to allocate sk_buff\n"); 619 err = -ENOMEM; 620 break; 621 } 622 buf_len = len - ETH_FCS_LEN; 623 buf = (u32 *)skb_put(skb, buf_len); 624 625 len = 0; 626 do { 627 sz = lan966x_rx_frame_word(lan966x, grp, &val); 628 if (sz < 0) { 629 kfree_skb(skb); 630 goto recover; 631 } 632 633 *buf++ = val; 634 len += sz; 635 } while (len < buf_len); 636 637 /* Read the FCS */ 638 sz = lan966x_rx_frame_word(lan966x, grp, &val); 639 if (sz < 0) { 640 kfree_skb(skb); 641 goto recover; 642 } 643 644 /* Update the statistics if part of the FCS was read before */ 645 len -= ETH_FCS_LEN - sz; 646 647 if (unlikely(dev->features & NETIF_F_RXFCS)) { 648 buf = (u32 *)skb_put(skb, ETH_FCS_LEN); 649 *buf = val; 650 } 651 652 lan966x_ptp_rxtstamp(lan966x, skb, timestamp); 653 skb->protocol = eth_type_trans(skb, dev); 654 655 if (lan966x->bridge_mask & BIT(src_port)) { 656 skb->offload_fwd_mark = 1; 657 658 skb_reset_network_header(skb); 659 if (!lan966x_hw_offload(lan966x, src_port, skb)) 660 skb->offload_fwd_mark = 0; 661 } 662 663 if (!skb_defer_rx_timestamp(skb)) 664 netif_rx(skb); 665 666 dev->stats.rx_bytes += len; 667 dev->stats.rx_packets++; 668 669 recover: 670 if (sz < 0 || err) 671 lan_rd(lan966x, QS_XTR_RD(grp)); 672 673 } while (lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp)); 674 675 return IRQ_HANDLED; 676 } 677 678 static irqreturn_t lan966x_ana_irq_handler(int irq, void *args) 679 { 680 struct lan966x *lan966x = args; 681 682 return lan966x_mac_irq_handler(lan966x); 683 } 684 685 static void lan966x_cleanup_ports(struct lan966x *lan966x) 686 { 687 struct lan966x_port *port; 688 int p; 689 690 for (p = 0; p < lan966x->num_phys_ports; p++) { 691 port = lan966x->ports[p]; 692 if (!port) 693 continue; 694 695 if (port->dev) 696 unregister_netdev(port->dev); 697 698 lan966x_xdp_port_deinit(port); 699 if (lan966x->fdma && lan966x->fdma_ndev == port->dev) 700 lan966x_fdma_netdev_deinit(lan966x, port->dev); 701 702 if (port->phylink) { 703 rtnl_lock(); 704 lan966x_port_stop(port->dev); 705 rtnl_unlock(); 706 phylink_destroy(port->phylink); 707 port->phylink = NULL; 708 } 709 710 if (port->fwnode) 711 fwnode_handle_put(port->fwnode); 712 } 713 714 disable_irq(lan966x->xtr_irq); 715 lan966x->xtr_irq = -ENXIO; 716 717 if (lan966x->ana_irq > 0) { 718 disable_irq(lan966x->ana_irq); 719 lan966x->ana_irq = -ENXIO; 720 } 721 722 if (lan966x->fdma) 723 devm_free_irq(lan966x->dev, lan966x->fdma_irq, lan966x); 724 725 if (lan966x->ptp_irq > 0) 726 devm_free_irq(lan966x->dev, lan966x->ptp_irq, lan966x); 727 728 if (lan966x->ptp_ext_irq > 0) 729 devm_free_irq(lan966x->dev, lan966x->ptp_ext_irq, lan966x); 730 } 731 732 static int lan966x_probe_port(struct lan966x *lan966x, u32 p, 733 phy_interface_t phy_mode, 734 struct fwnode_handle *portnp) 735 { 736 struct lan966x_port *port; 737 struct phylink *phylink; 738 struct net_device *dev; 739 int err; 740 741 if (p >= lan966x->num_phys_ports) 742 return -EINVAL; 743 744 dev = devm_alloc_etherdev_mqs(lan966x->dev, 745 sizeof(struct lan966x_port), 746 NUM_PRIO_QUEUES, 1); 747 if (!dev) 748 return -ENOMEM; 749 750 SET_NETDEV_DEV(dev, lan966x->dev); 751 port = netdev_priv(dev); 752 port->dev = dev; 753 port->lan966x = lan966x; 754 port->chip_port = p; 755 lan966x->ports[p] = port; 756 757 dev->max_mtu = ETH_MAX_MTU; 758 759 dev->netdev_ops = &lan966x_port_netdev_ops; 760 dev->ethtool_ops = &lan966x_ethtool_ops; 761 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 762 NETIF_F_HW_VLAN_STAG_TX | 763 NETIF_F_HW_TC; 764 dev->hw_features |= NETIF_F_HW_TC; 765 dev->needed_headroom = IFH_LEN_BYTES; 766 767 eth_hw_addr_gen(dev, lan966x->base_mac, p + 1); 768 769 lan966x_mac_learn(lan966x, PGID_CPU, dev->dev_addr, HOST_PVID, 770 ENTRYTYPE_LOCKED); 771 772 port->phylink_config.dev = &port->dev->dev; 773 port->phylink_config.type = PHYLINK_NETDEV; 774 port->phylink_pcs.poll = true; 775 port->phylink_pcs.ops = &lan966x_phylink_pcs_ops; 776 777 port->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | 778 MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD; 779 780 phy_interface_set_rgmii(port->phylink_config.supported_interfaces); 781 __set_bit(PHY_INTERFACE_MODE_MII, 782 port->phylink_config.supported_interfaces); 783 __set_bit(PHY_INTERFACE_MODE_GMII, 784 port->phylink_config.supported_interfaces); 785 __set_bit(PHY_INTERFACE_MODE_SGMII, 786 port->phylink_config.supported_interfaces); 787 __set_bit(PHY_INTERFACE_MODE_QSGMII, 788 port->phylink_config.supported_interfaces); 789 __set_bit(PHY_INTERFACE_MODE_QUSGMII, 790 port->phylink_config.supported_interfaces); 791 __set_bit(PHY_INTERFACE_MODE_1000BASEX, 792 port->phylink_config.supported_interfaces); 793 __set_bit(PHY_INTERFACE_MODE_2500BASEX, 794 port->phylink_config.supported_interfaces); 795 796 phylink = phylink_create(&port->phylink_config, 797 portnp, 798 phy_mode, 799 &lan966x_phylink_mac_ops); 800 if (IS_ERR(phylink)) { 801 port->dev = NULL; 802 return PTR_ERR(phylink); 803 } 804 805 port->phylink = phylink; 806 807 err = register_netdev(dev); 808 if (err) { 809 dev_err(lan966x->dev, "register_netdev failed\n"); 810 return err; 811 } 812 813 lan966x_vlan_port_set_vlan_aware(port, 0); 814 lan966x_vlan_port_set_vid(port, HOST_PVID, false, false); 815 lan966x_vlan_port_apply(port); 816 817 return 0; 818 } 819 820 static void lan966x_init(struct lan966x *lan966x) 821 { 822 u32 p, i; 823 824 /* MAC table initialization */ 825 lan966x_mac_init(lan966x); 826 827 lan966x_vlan_init(lan966x); 828 829 /* Flush queues */ 830 lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) | 831 GENMASK(1, 0), 832 lan966x, QS_XTR_FLUSH); 833 834 /* Allow to drain */ 835 mdelay(1); 836 837 /* All Queues normal */ 838 lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) & 839 ~(GENMASK(1, 0)), 840 lan966x, QS_XTR_FLUSH); 841 842 /* Set MAC age time to default value, the entry is aged after 843 * 2 * AGE_PERIOD 844 */ 845 lan_wr(ANA_AUTOAGE_AGE_PERIOD_SET(BR_DEFAULT_AGEING_TIME / 2 / HZ), 846 lan966x, ANA_AUTOAGE); 847 848 /* Disable learning for frames discarded by VLAN ingress filtering */ 849 lan_rmw(ANA_ADVLEARN_VLAN_CHK_SET(1), 850 ANA_ADVLEARN_VLAN_CHK, 851 lan966x, ANA_ADVLEARN); 852 853 /* Setup frame ageing - "2 sec" - The unit is 6.5 us on lan966x */ 854 lan_wr(SYS_FRM_AGING_AGE_TX_ENA_SET(1) | 855 (20000000 / 65), 856 lan966x, SYS_FRM_AGING); 857 858 /* Map the 8 CPU extraction queues to CPU port */ 859 lan_wr(0, lan966x, QSYS_CPU_GROUP_MAP); 860 861 /* Do byte-swap and expect status after last data word 862 * Extraction: Mode: manual extraction) | Byte_swap 863 */ 864 lan_wr(QS_XTR_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) | 865 QS_XTR_GRP_CFG_BYTE_SWAP_SET(1), 866 lan966x, QS_XTR_GRP_CFG(0)); 867 868 /* Injection: Mode: manual injection | Byte_swap */ 869 lan_wr(QS_INJ_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) | 870 QS_INJ_GRP_CFG_BYTE_SWAP_SET(1), 871 lan966x, QS_INJ_GRP_CFG(0)); 872 873 lan_rmw(QS_INJ_CTRL_GAP_SIZE_SET(0), 874 QS_INJ_CTRL_GAP_SIZE, 875 lan966x, QS_INJ_CTRL(0)); 876 877 /* Enable IFH insertion/parsing on CPU ports */ 878 lan_wr(SYS_PORT_MODE_INCL_INJ_HDR_SET(1) | 879 SYS_PORT_MODE_INCL_XTR_HDR_SET(1), 880 lan966x, SYS_PORT_MODE(CPU_PORT)); 881 882 /* Setup flooding PGIDs */ 883 lan_wr(ANA_FLOODING_IPMC_FLD_MC4_DATA_SET(PGID_MCIPV4) | 884 ANA_FLOODING_IPMC_FLD_MC4_CTRL_SET(PGID_MC) | 885 ANA_FLOODING_IPMC_FLD_MC6_DATA_SET(PGID_MCIPV6) | 886 ANA_FLOODING_IPMC_FLD_MC6_CTRL_SET(PGID_MC), 887 lan966x, ANA_FLOODING_IPMC); 888 889 /* There are 8 priorities */ 890 for (i = 0; i < 8; ++i) 891 lan_rmw(ANA_FLOODING_FLD_MULTICAST_SET(PGID_MC) | 892 ANA_FLOODING_FLD_UNICAST_SET(PGID_UC) | 893 ANA_FLOODING_FLD_BROADCAST_SET(PGID_BC), 894 ANA_FLOODING_FLD_MULTICAST | 895 ANA_FLOODING_FLD_UNICAST | 896 ANA_FLOODING_FLD_BROADCAST, 897 lan966x, ANA_FLOODING(i)); 898 899 for (i = 0; i < PGID_ENTRIES; ++i) 900 /* Set all the entries to obey VLAN_VLAN */ 901 lan_rmw(ANA_PGID_CFG_OBEY_VLAN_SET(1), 902 ANA_PGID_CFG_OBEY_VLAN, 903 lan966x, ANA_PGID_CFG(i)); 904 905 for (p = 0; p < lan966x->num_phys_ports; p++) { 906 /* Disable bridging by default */ 907 lan_rmw(ANA_PGID_PGID_SET(0x0), 908 ANA_PGID_PGID, 909 lan966x, ANA_PGID(p + PGID_SRC)); 910 911 /* Do not forward BPDU frames to the front ports and copy them 912 * to CPU 913 */ 914 lan_wr(0xffff, lan966x, ANA_CPU_FWD_BPDU_CFG(p)); 915 } 916 917 /* Set source buffer size for each priority and each port to 1500 bytes */ 918 for (i = 0; i <= QSYS_Q_RSRV; ++i) { 919 lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(i)); 920 lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(512 + i)); 921 } 922 923 /* Enable switching to/from cpu port */ 924 lan_wr(QSYS_SW_PORT_MODE_PORT_ENA_SET(1) | 925 QSYS_SW_PORT_MODE_SCH_NEXT_CFG_SET(1) | 926 QSYS_SW_PORT_MODE_INGRESS_DROP_MODE_SET(1), 927 lan966x, QSYS_SW_PORT_MODE(CPU_PORT)); 928 929 /* Configure and enable the CPU port */ 930 lan_rmw(ANA_PGID_PGID_SET(0), 931 ANA_PGID_PGID, 932 lan966x, ANA_PGID(CPU_PORT)); 933 lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT)), 934 ANA_PGID_PGID, 935 lan966x, ANA_PGID(PGID_CPU)); 936 937 /* Multicast to all other ports */ 938 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 939 ANA_PGID_PGID, 940 lan966x, ANA_PGID(PGID_MC)); 941 942 /* This will be controlled by mrouter ports */ 943 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 944 ANA_PGID_PGID, 945 lan966x, ANA_PGID(PGID_MCIPV4)); 946 947 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 948 ANA_PGID_PGID, 949 lan966x, ANA_PGID(PGID_MCIPV6)); 950 951 /* Unicast to all other ports */ 952 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 953 ANA_PGID_PGID, 954 lan966x, ANA_PGID(PGID_UC)); 955 956 /* Broadcast to the CPU port and to other ports */ 957 lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT) | GENMASK(lan966x->num_phys_ports - 1, 0)), 958 ANA_PGID_PGID, 959 lan966x, ANA_PGID(PGID_BC)); 960 961 lan_wr(REW_PORT_CFG_NO_REWRITE_SET(1), 962 lan966x, REW_PORT_CFG(CPU_PORT)); 963 964 lan_rmw(ANA_ANAINTR_INTR_ENA_SET(1), 965 ANA_ANAINTR_INTR_ENA, 966 lan966x, ANA_ANAINTR); 967 968 spin_lock_init(&lan966x->tx_lock); 969 970 lan966x_taprio_init(lan966x); 971 } 972 973 static int lan966x_ram_init(struct lan966x *lan966x) 974 { 975 return lan_rd(lan966x, SYS_RAM_INIT); 976 } 977 978 static int lan966x_reset_switch(struct lan966x *lan966x) 979 { 980 struct reset_control *switch_reset; 981 int val = 0; 982 int ret; 983 984 switch_reset = devm_reset_control_get_optional_shared(lan966x->dev, 985 "switch"); 986 if (IS_ERR(switch_reset)) 987 return dev_err_probe(lan966x->dev, PTR_ERR(switch_reset), 988 "Could not obtain switch reset"); 989 990 reset_control_reset(switch_reset); 991 992 lan_wr(SYS_RESET_CFG_CORE_ENA_SET(0), lan966x, SYS_RESET_CFG); 993 lan_wr(SYS_RAM_INIT_RAM_INIT_SET(1), lan966x, SYS_RAM_INIT); 994 ret = readx_poll_timeout(lan966x_ram_init, lan966x, 995 val, (val & BIT(1)) == 0, READL_SLEEP_US, 996 READL_TIMEOUT_US); 997 if (ret) 998 return ret; 999 1000 lan_wr(SYS_RESET_CFG_CORE_ENA_SET(1), lan966x, SYS_RESET_CFG); 1001 1002 return 0; 1003 } 1004 1005 static int lan966x_probe(struct platform_device *pdev) 1006 { 1007 struct fwnode_handle *ports, *portnp; 1008 struct lan966x *lan966x; 1009 u8 mac_addr[ETH_ALEN]; 1010 int err; 1011 1012 lan966x = devm_kzalloc(&pdev->dev, sizeof(*lan966x), GFP_KERNEL); 1013 if (!lan966x) 1014 return -ENOMEM; 1015 1016 platform_set_drvdata(pdev, lan966x); 1017 lan966x->dev = &pdev->dev; 1018 1019 if (!device_get_mac_address(&pdev->dev, mac_addr)) { 1020 ether_addr_copy(lan966x->base_mac, mac_addr); 1021 } else { 1022 pr_info("MAC addr was not set, use random MAC\n"); 1023 eth_random_addr(lan966x->base_mac); 1024 lan966x->base_mac[5] &= 0xf0; 1025 } 1026 1027 ports = device_get_named_child_node(&pdev->dev, "ethernet-ports"); 1028 if (!ports) 1029 return dev_err_probe(&pdev->dev, -ENODEV, 1030 "no ethernet-ports child found\n"); 1031 1032 err = lan966x_create_targets(pdev, lan966x); 1033 if (err) 1034 return dev_err_probe(&pdev->dev, err, 1035 "Failed to create targets"); 1036 1037 err = lan966x_reset_switch(lan966x); 1038 if (err) 1039 return dev_err_probe(&pdev->dev, err, "Reset failed"); 1040 1041 lan966x->num_phys_ports = NUM_PHYS_PORTS; 1042 lan966x->ports = devm_kcalloc(&pdev->dev, lan966x->num_phys_ports, 1043 sizeof(struct lan966x_port *), 1044 GFP_KERNEL); 1045 if (!lan966x->ports) 1046 return -ENOMEM; 1047 1048 /* There QS system has 32KB of memory */ 1049 lan966x->shared_queue_sz = LAN966X_BUFFER_MEMORY; 1050 1051 /* set irq */ 1052 lan966x->xtr_irq = platform_get_irq_byname(pdev, "xtr"); 1053 if (lan966x->xtr_irq <= 0) 1054 return -EINVAL; 1055 1056 err = devm_request_threaded_irq(&pdev->dev, lan966x->xtr_irq, NULL, 1057 lan966x_xtr_irq_handler, IRQF_ONESHOT, 1058 "frame extraction", lan966x); 1059 if (err) { 1060 pr_err("Unable to use xtr irq"); 1061 return -ENODEV; 1062 } 1063 1064 lan966x->ana_irq = platform_get_irq_byname(pdev, "ana"); 1065 if (lan966x->ana_irq > 0) { 1066 err = devm_request_threaded_irq(&pdev->dev, lan966x->ana_irq, NULL, 1067 lan966x_ana_irq_handler, IRQF_ONESHOT, 1068 "ana irq", lan966x); 1069 if (err) 1070 return dev_err_probe(&pdev->dev, err, "Unable to use ana irq"); 1071 } 1072 1073 lan966x->ptp_irq = platform_get_irq_byname(pdev, "ptp"); 1074 if (lan966x->ptp_irq > 0) { 1075 err = devm_request_threaded_irq(&pdev->dev, lan966x->ptp_irq, NULL, 1076 lan966x_ptp_irq_handler, IRQF_ONESHOT, 1077 "ptp irq", lan966x); 1078 if (err) 1079 return dev_err_probe(&pdev->dev, err, "Unable to use ptp irq"); 1080 1081 lan966x->ptp = 1; 1082 } 1083 1084 lan966x->fdma_irq = platform_get_irq_byname(pdev, "fdma"); 1085 if (lan966x->fdma_irq > 0) { 1086 err = devm_request_irq(&pdev->dev, lan966x->fdma_irq, 1087 lan966x_fdma_irq_handler, 0, 1088 "fdma irq", lan966x); 1089 if (err) 1090 return dev_err_probe(&pdev->dev, err, "Unable to use fdma irq"); 1091 1092 lan966x->fdma = true; 1093 } 1094 1095 if (lan966x->ptp) { 1096 lan966x->ptp_ext_irq = platform_get_irq_byname(pdev, "ptp-ext"); 1097 if (lan966x->ptp_ext_irq > 0) { 1098 err = devm_request_threaded_irq(&pdev->dev, 1099 lan966x->ptp_ext_irq, NULL, 1100 lan966x_ptp_ext_irq_handler, 1101 IRQF_ONESHOT, 1102 "ptp-ext irq", lan966x); 1103 if (err) 1104 return dev_err_probe(&pdev->dev, err, 1105 "Unable to use ptp-ext irq"); 1106 } 1107 } 1108 1109 /* init switch */ 1110 lan966x_init(lan966x); 1111 lan966x_stats_init(lan966x); 1112 1113 /* go over the child nodes */ 1114 fwnode_for_each_available_child_node(ports, portnp) { 1115 phy_interface_t phy_mode; 1116 struct phy *serdes; 1117 u32 p; 1118 1119 if (fwnode_property_read_u32(portnp, "reg", &p)) 1120 continue; 1121 1122 phy_mode = fwnode_get_phy_mode(portnp); 1123 err = lan966x_probe_port(lan966x, p, phy_mode, portnp); 1124 if (err) 1125 goto cleanup_ports; 1126 1127 /* Read needed configuration */ 1128 lan966x->ports[p]->config.portmode = phy_mode; 1129 lan966x->ports[p]->fwnode = fwnode_handle_get(portnp); 1130 1131 serdes = devm_of_phy_get(lan966x->dev, to_of_node(portnp), NULL); 1132 if (PTR_ERR(serdes) == -ENODEV) 1133 serdes = NULL; 1134 if (IS_ERR(serdes)) { 1135 err = PTR_ERR(serdes); 1136 goto cleanup_ports; 1137 } 1138 lan966x->ports[p]->serdes = serdes; 1139 1140 lan966x_port_init(lan966x->ports[p]); 1141 err = lan966x_xdp_port_init(lan966x->ports[p]); 1142 if (err) 1143 goto cleanup_ports; 1144 } 1145 1146 lan966x_mdb_init(lan966x); 1147 err = lan966x_fdb_init(lan966x); 1148 if (err) 1149 goto cleanup_ports; 1150 1151 err = lan966x_ptp_init(lan966x); 1152 if (err) 1153 goto cleanup_fdb; 1154 1155 err = lan966x_fdma_init(lan966x); 1156 if (err) 1157 goto cleanup_ptp; 1158 1159 return 0; 1160 1161 cleanup_ptp: 1162 lan966x_ptp_deinit(lan966x); 1163 1164 cleanup_fdb: 1165 lan966x_fdb_deinit(lan966x); 1166 1167 cleanup_ports: 1168 fwnode_handle_put(portnp); 1169 1170 lan966x_cleanup_ports(lan966x); 1171 1172 cancel_delayed_work_sync(&lan966x->stats_work); 1173 destroy_workqueue(lan966x->stats_queue); 1174 mutex_destroy(&lan966x->stats_lock); 1175 1176 return err; 1177 } 1178 1179 static int lan966x_remove(struct platform_device *pdev) 1180 { 1181 struct lan966x *lan966x = platform_get_drvdata(pdev); 1182 1183 lan966x_taprio_deinit(lan966x); 1184 lan966x_fdma_deinit(lan966x); 1185 lan966x_cleanup_ports(lan966x); 1186 1187 cancel_delayed_work_sync(&lan966x->stats_work); 1188 destroy_workqueue(lan966x->stats_queue); 1189 mutex_destroy(&lan966x->stats_lock); 1190 1191 lan966x_mac_purge_entries(lan966x); 1192 lan966x_mdb_deinit(lan966x); 1193 lan966x_fdb_deinit(lan966x); 1194 lan966x_ptp_deinit(lan966x); 1195 1196 return 0; 1197 } 1198 1199 static struct platform_driver lan966x_driver = { 1200 .probe = lan966x_probe, 1201 .remove = lan966x_remove, 1202 .driver = { 1203 .name = "lan966x-switch", 1204 .of_match_table = lan966x_match, 1205 }, 1206 }; 1207 1208 static int __init lan966x_switch_driver_init(void) 1209 { 1210 int ret; 1211 1212 lan966x_register_notifier_blocks(); 1213 1214 ret = platform_driver_register(&lan966x_driver); 1215 if (ret) 1216 goto err; 1217 1218 return 0; 1219 1220 err: 1221 lan966x_unregister_notifier_blocks(); 1222 return ret; 1223 } 1224 1225 static void __exit lan966x_switch_driver_exit(void) 1226 { 1227 platform_driver_unregister(&lan966x_driver); 1228 lan966x_unregister_notifier_blocks(); 1229 } 1230 1231 module_init(lan966x_switch_driver_init); 1232 module_exit(lan966x_switch_driver_exit); 1233 1234 MODULE_DESCRIPTION("Microchip LAN966X switch driver"); 1235 MODULE_AUTHOR("Horatiu Vultur <horatiu.vultur@microchip.com>"); 1236 MODULE_LICENSE("Dual MIT/GPL"); 1237