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_VCAP, 0x18000, 1 }, /* 0xe2018000 */ 51 { TARGET_VCAP + 1, 0x20000, 1 }, /* 0xe2020000 */ 52 { TARGET_VCAP + 2, 0x24000, 1 }, /* 0xe2024000 */ 53 { TARGET_SYS, 0x28000, 1 }, /* 0xe2028000 */ 54 { TARGET_DEV, 0x34000, 1 }, /* 0xe2034000 */ 55 { TARGET_DEV + 1, 0x38000, 1 }, /* 0xe2038000 */ 56 { TARGET_DEV + 2, 0x3c000, 1 }, /* 0xe203c000 */ 57 { TARGET_DEV + 3, 0x40000, 1 }, /* 0xe2040000 */ 58 { TARGET_DEV + 4, 0x44000, 1 }, /* 0xe2044000 */ 59 { TARGET_DEV + 5, 0x48000, 1 }, /* 0xe2048000 */ 60 { TARGET_DEV + 6, 0x4c000, 1 }, /* 0xe204c000 */ 61 { TARGET_DEV + 7, 0x50000, 1 }, /* 0xe2050000 */ 62 { TARGET_QSYS, 0x100000, 1 }, /* 0xe2100000 */ 63 { TARGET_AFI, 0x120000, 1 }, /* 0xe2120000 */ 64 { TARGET_ANA, 0x140000, 1 }, /* 0xe2140000 */ 65 }; 66 67 static int lan966x_create_targets(struct platform_device *pdev, 68 struct lan966x *lan966x) 69 { 70 struct resource *iores[IO_RANGES]; 71 void __iomem *begin[IO_RANGES]; 72 int idx; 73 74 /* Initially map the entire range and after that update each target to 75 * point inside the region at the correct offset. It is possible that 76 * other devices access the same region so don't add any checks about 77 * this. 78 */ 79 for (idx = 0; idx < IO_RANGES; idx++) { 80 iores[idx] = platform_get_resource(pdev, IORESOURCE_MEM, 81 idx); 82 if (!iores[idx]) { 83 dev_err(&pdev->dev, "Invalid resource\n"); 84 return -EINVAL; 85 } 86 87 begin[idx] = devm_ioremap(&pdev->dev, 88 iores[idx]->start, 89 resource_size(iores[idx])); 90 if (!begin[idx]) { 91 dev_err(&pdev->dev, "Unable to get registers: %s\n", 92 iores[idx]->name); 93 return -ENOMEM; 94 } 95 } 96 97 for (idx = 0; idx < ARRAY_SIZE(lan966x_main_iomap); idx++) { 98 const struct lan966x_main_io_resource *iomap = 99 &lan966x_main_iomap[idx]; 100 101 lan966x->regs[iomap->id] = begin[iomap->range] + iomap->offset; 102 } 103 104 return 0; 105 } 106 107 static bool lan966x_port_unique_address(struct net_device *dev) 108 { 109 struct lan966x_port *port = netdev_priv(dev); 110 struct lan966x *lan966x = port->lan966x; 111 int p; 112 113 for (p = 0; p < lan966x->num_phys_ports; ++p) { 114 port = lan966x->ports[p]; 115 if (!port || port->dev == dev) 116 continue; 117 118 if (ether_addr_equal(dev->dev_addr, port->dev->dev_addr)) 119 return false; 120 } 121 122 return true; 123 } 124 125 static int lan966x_port_set_mac_address(struct net_device *dev, void *p) 126 { 127 struct lan966x_port *port = netdev_priv(dev); 128 struct lan966x *lan966x = port->lan966x; 129 const struct sockaddr *addr = p; 130 int ret; 131 132 if (ether_addr_equal(addr->sa_data, dev->dev_addr)) 133 return 0; 134 135 /* Learn the new net device MAC address in the mac table. */ 136 ret = lan966x_mac_cpu_learn(lan966x, addr->sa_data, HOST_PVID); 137 if (ret) 138 return ret; 139 140 /* If there is another port with the same address as the dev, then don't 141 * delete it from the MAC table 142 */ 143 if (!lan966x_port_unique_address(dev)) 144 goto out; 145 146 /* Then forget the previous one. */ 147 ret = lan966x_mac_cpu_forget(lan966x, dev->dev_addr, HOST_PVID); 148 if (ret) 149 return ret; 150 151 out: 152 eth_hw_addr_set(dev, addr->sa_data); 153 return ret; 154 } 155 156 static int lan966x_port_get_phys_port_name(struct net_device *dev, 157 char *buf, size_t len) 158 { 159 struct lan966x_port *port = netdev_priv(dev); 160 int ret; 161 162 ret = snprintf(buf, len, "p%d", port->chip_port); 163 if (ret >= len) 164 return -EINVAL; 165 166 return 0; 167 } 168 169 static int lan966x_port_open(struct net_device *dev) 170 { 171 struct lan966x_port *port = netdev_priv(dev); 172 struct lan966x *lan966x = port->lan966x; 173 int err; 174 175 /* Enable receiving frames on the port, and activate auto-learning of 176 * MAC addresses. 177 */ 178 lan_rmw(ANA_PORT_CFG_LEARNAUTO_SET(1) | 179 ANA_PORT_CFG_RECV_ENA_SET(1) | 180 ANA_PORT_CFG_PORTID_VAL_SET(port->chip_port), 181 ANA_PORT_CFG_LEARNAUTO | 182 ANA_PORT_CFG_RECV_ENA | 183 ANA_PORT_CFG_PORTID_VAL, 184 lan966x, ANA_PORT_CFG(port->chip_port)); 185 186 err = phylink_fwnode_phy_connect(port->phylink, port->fwnode, 0); 187 if (err) { 188 netdev_err(dev, "Could not attach to PHY\n"); 189 return err; 190 } 191 192 phylink_start(port->phylink); 193 194 return 0; 195 } 196 197 static int lan966x_port_stop(struct net_device *dev) 198 { 199 struct lan966x_port *port = netdev_priv(dev); 200 201 lan966x_port_config_down(port); 202 phylink_stop(port->phylink); 203 phylink_disconnect_phy(port->phylink); 204 205 return 0; 206 } 207 208 static int lan966x_port_inj_status(struct lan966x *lan966x) 209 { 210 return lan_rd(lan966x, QS_INJ_STATUS); 211 } 212 213 static int lan966x_port_inj_ready(struct lan966x *lan966x, u8 grp) 214 { 215 u32 val; 216 217 if (lan_rd(lan966x, QS_INJ_STATUS) & QS_INJ_STATUS_FIFO_RDY_SET(BIT(grp))) 218 return 0; 219 220 return readx_poll_timeout_atomic(lan966x_port_inj_status, lan966x, val, 221 QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp), 222 READL_SLEEP_US, READL_TIMEOUT_US); 223 } 224 225 static int lan966x_port_ifh_xmit(struct sk_buff *skb, 226 __be32 *ifh, 227 struct net_device *dev) 228 { 229 struct lan966x_port *port = netdev_priv(dev); 230 struct lan966x *lan966x = port->lan966x; 231 u32 i, count, last; 232 u8 grp = 0; 233 u32 val; 234 int err; 235 236 val = lan_rd(lan966x, QS_INJ_STATUS); 237 if (!(QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp)) || 238 (QS_INJ_STATUS_WMARK_REACHED_GET(val) & BIT(grp))) 239 goto err; 240 241 /* Write start of frame */ 242 lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) | 243 QS_INJ_CTRL_SOF_SET(1), 244 lan966x, QS_INJ_CTRL(grp)); 245 246 /* Write IFH header */ 247 for (i = 0; i < IFH_LEN; ++i) { 248 /* Wait until the fifo is ready */ 249 err = lan966x_port_inj_ready(lan966x, grp); 250 if (err) 251 goto err; 252 253 lan_wr((__force u32)ifh[i], lan966x, QS_INJ_WR(grp)); 254 } 255 256 /* Write frame */ 257 count = DIV_ROUND_UP(skb->len, 4); 258 last = skb->len % 4; 259 for (i = 0; i < count; ++i) { 260 /* Wait until the fifo is ready */ 261 err = lan966x_port_inj_ready(lan966x, grp); 262 if (err) 263 goto err; 264 265 lan_wr(((u32 *)skb->data)[i], lan966x, QS_INJ_WR(grp)); 266 } 267 268 /* Add padding */ 269 while (i < (LAN966X_BUFFER_MIN_SZ / 4)) { 270 /* Wait until the fifo is ready */ 271 err = lan966x_port_inj_ready(lan966x, grp); 272 if (err) 273 goto err; 274 275 lan_wr(0, lan966x, QS_INJ_WR(grp)); 276 ++i; 277 } 278 279 /* Inidcate EOF and valid bytes in the last word */ 280 lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) | 281 QS_INJ_CTRL_VLD_BYTES_SET(skb->len < LAN966X_BUFFER_MIN_SZ ? 282 0 : last) | 283 QS_INJ_CTRL_EOF_SET(1), 284 lan966x, QS_INJ_CTRL(grp)); 285 286 /* Add dummy CRC */ 287 lan_wr(0, lan966x, QS_INJ_WR(grp)); 288 skb_tx_timestamp(skb); 289 290 dev->stats.tx_packets++; 291 dev->stats.tx_bytes += skb->len; 292 293 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && 294 LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP) 295 return NETDEV_TX_OK; 296 297 dev_consume_skb_any(skb); 298 return NETDEV_TX_OK; 299 300 err: 301 if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP && 302 LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP) 303 lan966x_ptp_txtstamp_release(port, skb); 304 305 return NETDEV_TX_BUSY; 306 } 307 308 void lan966x_ifh_set_bypass(void *ifh, u64 bypass) 309 { 310 packing(ifh, &bypass, IFH_POS_BYPASS + IFH_WID_BYPASS - 1, 311 IFH_POS_BYPASS, IFH_LEN * 4, PACK, 0); 312 } 313 314 void lan966x_ifh_set_port(void *ifh, u64 bypass) 315 { 316 packing(ifh, &bypass, IFH_POS_DSTS + IFH_WID_DSTS - 1, 317 IFH_POS_DSTS, IFH_LEN * 4, PACK, 0); 318 } 319 320 static void lan966x_ifh_set_qos_class(void *ifh, u64 bypass) 321 { 322 packing(ifh, &bypass, IFH_POS_QOS_CLASS + IFH_WID_QOS_CLASS - 1, 323 IFH_POS_QOS_CLASS, IFH_LEN * 4, PACK, 0); 324 } 325 326 static void lan966x_ifh_set_ipv(void *ifh, u64 bypass) 327 { 328 packing(ifh, &bypass, IFH_POS_IPV + IFH_WID_IPV - 1, 329 IFH_POS_IPV, IFH_LEN * 4, PACK, 0); 330 } 331 332 static void lan966x_ifh_set_vid(void *ifh, u64 vid) 333 { 334 packing(ifh, &vid, IFH_POS_TCI + IFH_WID_TCI - 1, 335 IFH_POS_TCI, IFH_LEN * 4, PACK, 0); 336 } 337 338 static void lan966x_ifh_set_rew_op(void *ifh, u64 rew_op) 339 { 340 packing(ifh, &rew_op, IFH_POS_REW_CMD + IFH_WID_REW_CMD - 1, 341 IFH_POS_REW_CMD, IFH_LEN * 4, PACK, 0); 342 } 343 344 static void lan966x_ifh_set_timestamp(void *ifh, u64 timestamp) 345 { 346 packing(ifh, ×tamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1, 347 IFH_POS_TIMESTAMP, IFH_LEN * 4, PACK, 0); 348 } 349 350 static netdev_tx_t lan966x_port_xmit(struct sk_buff *skb, 351 struct net_device *dev) 352 { 353 struct lan966x_port *port = netdev_priv(dev); 354 struct lan966x *lan966x = port->lan966x; 355 __be32 ifh[IFH_LEN]; 356 int err; 357 358 memset(ifh, 0x0, sizeof(__be32) * IFH_LEN); 359 360 lan966x_ifh_set_bypass(ifh, 1); 361 lan966x_ifh_set_port(ifh, BIT_ULL(port->chip_port)); 362 lan966x_ifh_set_qos_class(ifh, skb->priority >= 7 ? 0x7 : skb->priority); 363 lan966x_ifh_set_ipv(ifh, skb->priority >= 7 ? 0x7 : skb->priority); 364 lan966x_ifh_set_vid(ifh, skb_vlan_tag_get(skb)); 365 366 if (port->lan966x->ptp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) { 367 err = lan966x_ptp_txtstamp_request(port, skb); 368 if (err) 369 return err; 370 371 lan966x_ifh_set_rew_op(ifh, LAN966X_SKB_CB(skb)->rew_op); 372 lan966x_ifh_set_timestamp(ifh, LAN966X_SKB_CB(skb)->ts_id); 373 } 374 375 spin_lock(&lan966x->tx_lock); 376 if (port->lan966x->fdma) 377 err = lan966x_fdma_xmit(skb, ifh, dev); 378 else 379 err = lan966x_port_ifh_xmit(skb, ifh, dev); 380 spin_unlock(&lan966x->tx_lock); 381 382 return err; 383 } 384 385 static int lan966x_port_change_mtu(struct net_device *dev, int new_mtu) 386 { 387 struct lan966x_port *port = netdev_priv(dev); 388 struct lan966x *lan966x = port->lan966x; 389 int old_mtu = dev->mtu; 390 int err; 391 392 lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(LAN966X_HW_MTU(new_mtu)), 393 lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port)); 394 dev->mtu = new_mtu; 395 396 if (!lan966x->fdma) 397 return 0; 398 399 err = lan966x_fdma_change_mtu(lan966x); 400 if (err) { 401 lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(LAN966X_HW_MTU(old_mtu)), 402 lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port)); 403 dev->mtu = old_mtu; 404 } 405 406 return err; 407 } 408 409 static int lan966x_mc_unsync(struct net_device *dev, const unsigned char *addr) 410 { 411 struct lan966x_port *port = netdev_priv(dev); 412 struct lan966x *lan966x = port->lan966x; 413 414 return lan966x_mac_forget(lan966x, addr, HOST_PVID, ENTRYTYPE_LOCKED); 415 } 416 417 static int lan966x_mc_sync(struct net_device *dev, const unsigned char *addr) 418 { 419 struct lan966x_port *port = netdev_priv(dev); 420 struct lan966x *lan966x = port->lan966x; 421 422 return lan966x_mac_cpu_learn(lan966x, addr, HOST_PVID); 423 } 424 425 static void lan966x_port_set_rx_mode(struct net_device *dev) 426 { 427 __dev_mc_sync(dev, lan966x_mc_sync, lan966x_mc_unsync); 428 } 429 430 static int lan966x_port_get_parent_id(struct net_device *dev, 431 struct netdev_phys_item_id *ppid) 432 { 433 struct lan966x_port *port = netdev_priv(dev); 434 struct lan966x *lan966x = port->lan966x; 435 436 ppid->id_len = sizeof(lan966x->base_mac); 437 memcpy(&ppid->id, &lan966x->base_mac, ppid->id_len); 438 439 return 0; 440 } 441 442 static int lan966x_port_ioctl(struct net_device *dev, struct ifreq *ifr, 443 int cmd) 444 { 445 struct lan966x_port *port = netdev_priv(dev); 446 447 if (!phy_has_hwtstamp(dev->phydev) && port->lan966x->ptp) { 448 switch (cmd) { 449 case SIOCSHWTSTAMP: 450 return lan966x_ptp_hwtstamp_set(port, ifr); 451 case SIOCGHWTSTAMP: 452 return lan966x_ptp_hwtstamp_get(port, ifr); 453 } 454 } 455 456 if (!dev->phydev) 457 return -ENODEV; 458 459 return phy_mii_ioctl(dev->phydev, ifr, cmd); 460 } 461 462 static const struct net_device_ops lan966x_port_netdev_ops = { 463 .ndo_open = lan966x_port_open, 464 .ndo_stop = lan966x_port_stop, 465 .ndo_start_xmit = lan966x_port_xmit, 466 .ndo_change_mtu = lan966x_port_change_mtu, 467 .ndo_set_rx_mode = lan966x_port_set_rx_mode, 468 .ndo_get_phys_port_name = lan966x_port_get_phys_port_name, 469 .ndo_get_stats64 = lan966x_stats_get, 470 .ndo_set_mac_address = lan966x_port_set_mac_address, 471 .ndo_get_port_parent_id = lan966x_port_get_parent_id, 472 .ndo_eth_ioctl = lan966x_port_ioctl, 473 .ndo_setup_tc = lan966x_tc_setup, 474 .ndo_bpf = lan966x_xdp, 475 .ndo_xdp_xmit = lan966x_xdp_xmit, 476 }; 477 478 bool lan966x_netdevice_check(const struct net_device *dev) 479 { 480 return dev->netdev_ops == &lan966x_port_netdev_ops; 481 } 482 483 bool lan966x_hw_offload(struct lan966x *lan966x, u32 port, struct sk_buff *skb) 484 { 485 u32 val; 486 487 /* The IGMP and MLD frames are not forward by the HW if 488 * multicast snooping is enabled, therefor don't mark as 489 * offload to allow the SW to forward the frames accordingly. 490 */ 491 val = lan_rd(lan966x, ANA_CPU_FWD_CFG(port)); 492 if (!(val & (ANA_CPU_FWD_CFG_IGMP_REDIR_ENA | 493 ANA_CPU_FWD_CFG_MLD_REDIR_ENA))) 494 return true; 495 496 if (eth_type_vlan(skb->protocol)) { 497 skb = skb_vlan_untag(skb); 498 if (unlikely(!skb)) 499 return false; 500 } 501 502 if (skb->protocol == htons(ETH_P_IP) && 503 ip_hdr(skb)->protocol == IPPROTO_IGMP) 504 return false; 505 506 if (IS_ENABLED(CONFIG_IPV6) && 507 skb->protocol == htons(ETH_P_IPV6) && 508 ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) && 509 !ipv6_mc_check_mld(skb)) 510 return false; 511 512 return true; 513 } 514 515 static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp) 516 { 517 return lan_rd(lan966x, QS_XTR_RD(grp)); 518 } 519 520 static int lan966x_port_xtr_ready(struct lan966x *lan966x, u8 grp) 521 { 522 u32 val; 523 524 return read_poll_timeout(lan966x_port_xtr_status, val, 525 val != XTR_NOT_READY, 526 READL_SLEEP_US, READL_TIMEOUT_US, false, 527 lan966x, grp); 528 } 529 530 static int lan966x_rx_frame_word(struct lan966x *lan966x, u8 grp, u32 *rval) 531 { 532 u32 bytes_valid; 533 u32 val; 534 int err; 535 536 val = lan_rd(lan966x, QS_XTR_RD(grp)); 537 if (val == XTR_NOT_READY) { 538 err = lan966x_port_xtr_ready(lan966x, grp); 539 if (err) 540 return -EIO; 541 } 542 543 switch (val) { 544 case XTR_ABORT: 545 return -EIO; 546 case XTR_EOF_0: 547 case XTR_EOF_1: 548 case XTR_EOF_2: 549 case XTR_EOF_3: 550 case XTR_PRUNED: 551 bytes_valid = XTR_VALID_BYTES(val); 552 val = lan_rd(lan966x, QS_XTR_RD(grp)); 553 if (val == XTR_ESCAPE) 554 *rval = lan_rd(lan966x, QS_XTR_RD(grp)); 555 else 556 *rval = val; 557 558 return bytes_valid; 559 case XTR_ESCAPE: 560 *rval = lan_rd(lan966x, QS_XTR_RD(grp)); 561 562 return 4; 563 default: 564 *rval = val; 565 566 return 4; 567 } 568 } 569 570 void lan966x_ifh_get_src_port(void *ifh, u64 *src_port) 571 { 572 packing(ifh, src_port, IFH_POS_SRCPORT + IFH_WID_SRCPORT - 1, 573 IFH_POS_SRCPORT, IFH_LEN * 4, UNPACK, 0); 574 } 575 576 static void lan966x_ifh_get_len(void *ifh, u64 *len) 577 { 578 packing(ifh, len, IFH_POS_LEN + IFH_WID_LEN - 1, 579 IFH_POS_LEN, IFH_LEN * 4, UNPACK, 0); 580 } 581 582 void lan966x_ifh_get_timestamp(void *ifh, u64 *timestamp) 583 { 584 packing(ifh, timestamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1, 585 IFH_POS_TIMESTAMP, IFH_LEN * 4, UNPACK, 0); 586 } 587 588 static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args) 589 { 590 struct lan966x *lan966x = args; 591 int i, grp = 0, err = 0; 592 593 if (!(lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp))) 594 return IRQ_NONE; 595 596 do { 597 u64 src_port, len, timestamp; 598 struct net_device *dev; 599 struct sk_buff *skb; 600 int sz = 0, buf_len; 601 u32 ifh[IFH_LEN]; 602 u32 *buf; 603 u32 val; 604 605 for (i = 0; i < IFH_LEN; i++) { 606 err = lan966x_rx_frame_word(lan966x, grp, &ifh[i]); 607 if (err != 4) 608 goto recover; 609 } 610 611 err = 0; 612 613 lan966x_ifh_get_src_port(ifh, &src_port); 614 lan966x_ifh_get_len(ifh, &len); 615 lan966x_ifh_get_timestamp(ifh, ×tamp); 616 617 WARN_ON(src_port >= lan966x->num_phys_ports); 618 619 dev = lan966x->ports[src_port]->dev; 620 skb = netdev_alloc_skb(dev, len); 621 if (unlikely(!skb)) { 622 netdev_err(dev, "Unable to allocate sk_buff\n"); 623 err = -ENOMEM; 624 break; 625 } 626 buf_len = len - ETH_FCS_LEN; 627 buf = (u32 *)skb_put(skb, buf_len); 628 629 len = 0; 630 do { 631 sz = lan966x_rx_frame_word(lan966x, grp, &val); 632 if (sz < 0) { 633 kfree_skb(skb); 634 goto recover; 635 } 636 637 *buf++ = val; 638 len += sz; 639 } while (len < buf_len); 640 641 /* Read the FCS */ 642 sz = lan966x_rx_frame_word(lan966x, grp, &val); 643 if (sz < 0) { 644 kfree_skb(skb); 645 goto recover; 646 } 647 648 /* Update the statistics if part of the FCS was read before */ 649 len -= ETH_FCS_LEN - sz; 650 651 if (unlikely(dev->features & NETIF_F_RXFCS)) { 652 buf = (u32 *)skb_put(skb, ETH_FCS_LEN); 653 *buf = val; 654 } 655 656 lan966x_ptp_rxtstamp(lan966x, skb, timestamp); 657 skb->protocol = eth_type_trans(skb, dev); 658 659 if (lan966x->bridge_mask & BIT(src_port)) { 660 skb->offload_fwd_mark = 1; 661 662 skb_reset_network_header(skb); 663 if (!lan966x_hw_offload(lan966x, src_port, skb)) 664 skb->offload_fwd_mark = 0; 665 } 666 667 if (!skb_defer_rx_timestamp(skb)) 668 netif_rx(skb); 669 670 dev->stats.rx_bytes += len; 671 dev->stats.rx_packets++; 672 673 recover: 674 if (sz < 0 || err) 675 lan_rd(lan966x, QS_XTR_RD(grp)); 676 677 } while (lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp)); 678 679 return IRQ_HANDLED; 680 } 681 682 static irqreturn_t lan966x_ana_irq_handler(int irq, void *args) 683 { 684 struct lan966x *lan966x = args; 685 686 return lan966x_mac_irq_handler(lan966x); 687 } 688 689 static void lan966x_cleanup_ports(struct lan966x *lan966x) 690 { 691 struct lan966x_port *port; 692 int p; 693 694 for (p = 0; p < lan966x->num_phys_ports; p++) { 695 port = lan966x->ports[p]; 696 if (!port) 697 continue; 698 699 if (port->dev) 700 unregister_netdev(port->dev); 701 702 lan966x_xdp_port_deinit(port); 703 if (lan966x->fdma && lan966x->fdma_ndev == port->dev) 704 lan966x_fdma_netdev_deinit(lan966x, port->dev); 705 706 if (port->phylink) { 707 rtnl_lock(); 708 lan966x_port_stop(port->dev); 709 rtnl_unlock(); 710 phylink_destroy(port->phylink); 711 port->phylink = NULL; 712 } 713 714 if (port->fwnode) 715 fwnode_handle_put(port->fwnode); 716 } 717 718 disable_irq(lan966x->xtr_irq); 719 lan966x->xtr_irq = -ENXIO; 720 721 if (lan966x->ana_irq > 0) { 722 disable_irq(lan966x->ana_irq); 723 lan966x->ana_irq = -ENXIO; 724 } 725 726 if (lan966x->fdma) 727 devm_free_irq(lan966x->dev, lan966x->fdma_irq, lan966x); 728 729 if (lan966x->ptp_irq > 0) 730 devm_free_irq(lan966x->dev, lan966x->ptp_irq, lan966x); 731 732 if (lan966x->ptp_ext_irq > 0) 733 devm_free_irq(lan966x->dev, lan966x->ptp_ext_irq, lan966x); 734 } 735 736 static int lan966x_probe_port(struct lan966x *lan966x, u32 p, 737 phy_interface_t phy_mode, 738 struct fwnode_handle *portnp) 739 { 740 struct lan966x_port *port; 741 struct phylink *phylink; 742 struct net_device *dev; 743 int err; 744 745 if (p >= lan966x->num_phys_ports) 746 return -EINVAL; 747 748 dev = devm_alloc_etherdev_mqs(lan966x->dev, 749 sizeof(struct lan966x_port), 750 NUM_PRIO_QUEUES, 1); 751 if (!dev) 752 return -ENOMEM; 753 754 SET_NETDEV_DEV(dev, lan966x->dev); 755 port = netdev_priv(dev); 756 port->dev = dev; 757 port->lan966x = lan966x; 758 port->chip_port = p; 759 lan966x->ports[p] = port; 760 761 dev->max_mtu = ETH_MAX_MTU; 762 763 dev->netdev_ops = &lan966x_port_netdev_ops; 764 dev->ethtool_ops = &lan966x_ethtool_ops; 765 dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 766 NETIF_F_HW_VLAN_STAG_TX | 767 NETIF_F_HW_TC; 768 dev->hw_features |= NETIF_F_HW_TC; 769 dev->needed_headroom = IFH_LEN_BYTES; 770 771 eth_hw_addr_gen(dev, lan966x->base_mac, p + 1); 772 773 lan966x_mac_learn(lan966x, PGID_CPU, dev->dev_addr, HOST_PVID, 774 ENTRYTYPE_LOCKED); 775 776 port->phylink_config.dev = &port->dev->dev; 777 port->phylink_config.type = PHYLINK_NETDEV; 778 port->phylink_pcs.poll = true; 779 port->phylink_pcs.ops = &lan966x_phylink_pcs_ops; 780 781 port->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | 782 MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD; 783 784 phy_interface_set_rgmii(port->phylink_config.supported_interfaces); 785 __set_bit(PHY_INTERFACE_MODE_MII, 786 port->phylink_config.supported_interfaces); 787 __set_bit(PHY_INTERFACE_MODE_GMII, 788 port->phylink_config.supported_interfaces); 789 __set_bit(PHY_INTERFACE_MODE_SGMII, 790 port->phylink_config.supported_interfaces); 791 __set_bit(PHY_INTERFACE_MODE_QSGMII, 792 port->phylink_config.supported_interfaces); 793 __set_bit(PHY_INTERFACE_MODE_QUSGMII, 794 port->phylink_config.supported_interfaces); 795 __set_bit(PHY_INTERFACE_MODE_1000BASEX, 796 port->phylink_config.supported_interfaces); 797 __set_bit(PHY_INTERFACE_MODE_2500BASEX, 798 port->phylink_config.supported_interfaces); 799 800 phylink = phylink_create(&port->phylink_config, 801 portnp, 802 phy_mode, 803 &lan966x_phylink_mac_ops); 804 if (IS_ERR(phylink)) { 805 port->dev = NULL; 806 return PTR_ERR(phylink); 807 } 808 809 port->phylink = phylink; 810 811 err = register_netdev(dev); 812 if (err) { 813 dev_err(lan966x->dev, "register_netdev failed\n"); 814 return err; 815 } 816 817 lan966x_vlan_port_set_vlan_aware(port, 0); 818 lan966x_vlan_port_set_vid(port, HOST_PVID, false, false); 819 lan966x_vlan_port_apply(port); 820 821 return 0; 822 } 823 824 static void lan966x_init(struct lan966x *lan966x) 825 { 826 u32 p, i; 827 828 /* MAC table initialization */ 829 lan966x_mac_init(lan966x); 830 831 lan966x_vlan_init(lan966x); 832 833 /* Flush queues */ 834 lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) | 835 GENMASK(1, 0), 836 lan966x, QS_XTR_FLUSH); 837 838 /* Allow to drain */ 839 mdelay(1); 840 841 /* All Queues normal */ 842 lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) & 843 ~(GENMASK(1, 0)), 844 lan966x, QS_XTR_FLUSH); 845 846 /* Set MAC age time to default value, the entry is aged after 847 * 2 * AGE_PERIOD 848 */ 849 lan_wr(ANA_AUTOAGE_AGE_PERIOD_SET(BR_DEFAULT_AGEING_TIME / 2 / HZ), 850 lan966x, ANA_AUTOAGE); 851 852 /* Disable learning for frames discarded by VLAN ingress filtering */ 853 lan_rmw(ANA_ADVLEARN_VLAN_CHK_SET(1), 854 ANA_ADVLEARN_VLAN_CHK, 855 lan966x, ANA_ADVLEARN); 856 857 /* Setup frame ageing - "2 sec" - The unit is 6.5 us on lan966x */ 858 lan_wr(SYS_FRM_AGING_AGE_TX_ENA_SET(1) | 859 (20000000 / 65), 860 lan966x, SYS_FRM_AGING); 861 862 /* Map the 8 CPU extraction queues to CPU port */ 863 lan_wr(0, lan966x, QSYS_CPU_GROUP_MAP); 864 865 /* Do byte-swap and expect status after last data word 866 * Extraction: Mode: manual extraction) | Byte_swap 867 */ 868 lan_wr(QS_XTR_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) | 869 QS_XTR_GRP_CFG_BYTE_SWAP_SET(1), 870 lan966x, QS_XTR_GRP_CFG(0)); 871 872 /* Injection: Mode: manual injection | Byte_swap */ 873 lan_wr(QS_INJ_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) | 874 QS_INJ_GRP_CFG_BYTE_SWAP_SET(1), 875 lan966x, QS_INJ_GRP_CFG(0)); 876 877 lan_rmw(QS_INJ_CTRL_GAP_SIZE_SET(0), 878 QS_INJ_CTRL_GAP_SIZE, 879 lan966x, QS_INJ_CTRL(0)); 880 881 /* Enable IFH insertion/parsing on CPU ports */ 882 lan_wr(SYS_PORT_MODE_INCL_INJ_HDR_SET(1) | 883 SYS_PORT_MODE_INCL_XTR_HDR_SET(1), 884 lan966x, SYS_PORT_MODE(CPU_PORT)); 885 886 /* Setup flooding PGIDs */ 887 lan_wr(ANA_FLOODING_IPMC_FLD_MC4_DATA_SET(PGID_MCIPV4) | 888 ANA_FLOODING_IPMC_FLD_MC4_CTRL_SET(PGID_MC) | 889 ANA_FLOODING_IPMC_FLD_MC6_DATA_SET(PGID_MCIPV6) | 890 ANA_FLOODING_IPMC_FLD_MC6_CTRL_SET(PGID_MC), 891 lan966x, ANA_FLOODING_IPMC); 892 893 /* There are 8 priorities */ 894 for (i = 0; i < 8; ++i) 895 lan_rmw(ANA_FLOODING_FLD_MULTICAST_SET(PGID_MC) | 896 ANA_FLOODING_FLD_UNICAST_SET(PGID_UC) | 897 ANA_FLOODING_FLD_BROADCAST_SET(PGID_BC), 898 ANA_FLOODING_FLD_MULTICAST | 899 ANA_FLOODING_FLD_UNICAST | 900 ANA_FLOODING_FLD_BROADCAST, 901 lan966x, ANA_FLOODING(i)); 902 903 for (i = 0; i < PGID_ENTRIES; ++i) 904 /* Set all the entries to obey VLAN_VLAN */ 905 lan_rmw(ANA_PGID_CFG_OBEY_VLAN_SET(1), 906 ANA_PGID_CFG_OBEY_VLAN, 907 lan966x, ANA_PGID_CFG(i)); 908 909 for (p = 0; p < lan966x->num_phys_ports; p++) { 910 /* Disable bridging by default */ 911 lan_rmw(ANA_PGID_PGID_SET(0x0), 912 ANA_PGID_PGID, 913 lan966x, ANA_PGID(p + PGID_SRC)); 914 915 /* Do not forward BPDU frames to the front ports and copy them 916 * to CPU 917 */ 918 lan_wr(0xffff, lan966x, ANA_CPU_FWD_BPDU_CFG(p)); 919 } 920 921 /* Set source buffer size for each priority and each port to 1500 bytes */ 922 for (i = 0; i <= QSYS_Q_RSRV; ++i) { 923 lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(i)); 924 lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(512 + i)); 925 } 926 927 /* Enable switching to/from cpu port */ 928 lan_wr(QSYS_SW_PORT_MODE_PORT_ENA_SET(1) | 929 QSYS_SW_PORT_MODE_SCH_NEXT_CFG_SET(1) | 930 QSYS_SW_PORT_MODE_INGRESS_DROP_MODE_SET(1), 931 lan966x, QSYS_SW_PORT_MODE(CPU_PORT)); 932 933 /* Configure and enable the CPU port */ 934 lan_rmw(ANA_PGID_PGID_SET(0), 935 ANA_PGID_PGID, 936 lan966x, ANA_PGID(CPU_PORT)); 937 lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT)), 938 ANA_PGID_PGID, 939 lan966x, ANA_PGID(PGID_CPU)); 940 941 /* Multicast to all other ports */ 942 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 943 ANA_PGID_PGID, 944 lan966x, ANA_PGID(PGID_MC)); 945 946 /* This will be controlled by mrouter ports */ 947 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 948 ANA_PGID_PGID, 949 lan966x, ANA_PGID(PGID_MCIPV4)); 950 951 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 952 ANA_PGID_PGID, 953 lan966x, ANA_PGID(PGID_MCIPV6)); 954 955 /* Unicast to all other ports */ 956 lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0), 957 ANA_PGID_PGID, 958 lan966x, ANA_PGID(PGID_UC)); 959 960 /* Broadcast to the CPU port and to other ports */ 961 lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT) | GENMASK(lan966x->num_phys_ports - 1, 0)), 962 ANA_PGID_PGID, 963 lan966x, ANA_PGID(PGID_BC)); 964 965 lan_wr(REW_PORT_CFG_NO_REWRITE_SET(1), 966 lan966x, REW_PORT_CFG(CPU_PORT)); 967 968 lan_rmw(ANA_ANAINTR_INTR_ENA_SET(1), 969 ANA_ANAINTR_INTR_ENA, 970 lan966x, ANA_ANAINTR); 971 972 spin_lock_init(&lan966x->tx_lock); 973 974 lan966x_taprio_init(lan966x); 975 } 976 977 static int lan966x_ram_init(struct lan966x *lan966x) 978 { 979 return lan_rd(lan966x, SYS_RAM_INIT); 980 } 981 982 static int lan966x_reset_switch(struct lan966x *lan966x) 983 { 984 struct reset_control *switch_reset; 985 int val = 0; 986 int ret; 987 988 switch_reset = devm_reset_control_get_optional_shared(lan966x->dev, 989 "switch"); 990 if (IS_ERR(switch_reset)) 991 return dev_err_probe(lan966x->dev, PTR_ERR(switch_reset), 992 "Could not obtain switch reset"); 993 994 reset_control_reset(switch_reset); 995 996 lan_wr(SYS_RESET_CFG_CORE_ENA_SET(0), lan966x, SYS_RESET_CFG); 997 lan_wr(SYS_RAM_INIT_RAM_INIT_SET(1), lan966x, SYS_RAM_INIT); 998 ret = readx_poll_timeout(lan966x_ram_init, lan966x, 999 val, (val & BIT(1)) == 0, READL_SLEEP_US, 1000 READL_TIMEOUT_US); 1001 if (ret) 1002 return ret; 1003 1004 lan_wr(SYS_RESET_CFG_CORE_ENA_SET(1), lan966x, SYS_RESET_CFG); 1005 1006 return 0; 1007 } 1008 1009 static int lan966x_probe(struct platform_device *pdev) 1010 { 1011 struct fwnode_handle *ports, *portnp; 1012 struct lan966x *lan966x; 1013 u8 mac_addr[ETH_ALEN]; 1014 int err; 1015 1016 lan966x = devm_kzalloc(&pdev->dev, sizeof(*lan966x), GFP_KERNEL); 1017 if (!lan966x) 1018 return -ENOMEM; 1019 1020 platform_set_drvdata(pdev, lan966x); 1021 lan966x->dev = &pdev->dev; 1022 1023 if (!device_get_mac_address(&pdev->dev, mac_addr)) { 1024 ether_addr_copy(lan966x->base_mac, mac_addr); 1025 } else { 1026 pr_info("MAC addr was not set, use random MAC\n"); 1027 eth_random_addr(lan966x->base_mac); 1028 lan966x->base_mac[5] &= 0xf0; 1029 } 1030 1031 ports = device_get_named_child_node(&pdev->dev, "ethernet-ports"); 1032 if (!ports) 1033 return dev_err_probe(&pdev->dev, -ENODEV, 1034 "no ethernet-ports child found\n"); 1035 1036 err = lan966x_create_targets(pdev, lan966x); 1037 if (err) 1038 return dev_err_probe(&pdev->dev, err, 1039 "Failed to create targets"); 1040 1041 err = lan966x_reset_switch(lan966x); 1042 if (err) 1043 return dev_err_probe(&pdev->dev, err, "Reset failed"); 1044 1045 lan966x->num_phys_ports = NUM_PHYS_PORTS; 1046 lan966x->ports = devm_kcalloc(&pdev->dev, lan966x->num_phys_ports, 1047 sizeof(struct lan966x_port *), 1048 GFP_KERNEL); 1049 if (!lan966x->ports) 1050 return -ENOMEM; 1051 1052 /* There QS system has 32KB of memory */ 1053 lan966x->shared_queue_sz = LAN966X_BUFFER_MEMORY; 1054 1055 /* set irq */ 1056 lan966x->xtr_irq = platform_get_irq_byname(pdev, "xtr"); 1057 if (lan966x->xtr_irq <= 0) 1058 return -EINVAL; 1059 1060 err = devm_request_threaded_irq(&pdev->dev, lan966x->xtr_irq, NULL, 1061 lan966x_xtr_irq_handler, IRQF_ONESHOT, 1062 "frame extraction", lan966x); 1063 if (err) { 1064 pr_err("Unable to use xtr irq"); 1065 return -ENODEV; 1066 } 1067 1068 lan966x->ana_irq = platform_get_irq_byname(pdev, "ana"); 1069 if (lan966x->ana_irq > 0) { 1070 err = devm_request_threaded_irq(&pdev->dev, lan966x->ana_irq, NULL, 1071 lan966x_ana_irq_handler, IRQF_ONESHOT, 1072 "ana irq", lan966x); 1073 if (err) 1074 return dev_err_probe(&pdev->dev, err, "Unable to use ana irq"); 1075 } 1076 1077 lan966x->ptp_irq = platform_get_irq_byname(pdev, "ptp"); 1078 if (lan966x->ptp_irq > 0) { 1079 err = devm_request_threaded_irq(&pdev->dev, lan966x->ptp_irq, NULL, 1080 lan966x_ptp_irq_handler, IRQF_ONESHOT, 1081 "ptp irq", lan966x); 1082 if (err) 1083 return dev_err_probe(&pdev->dev, err, "Unable to use ptp irq"); 1084 1085 lan966x->ptp = 1; 1086 } 1087 1088 lan966x->fdma_irq = platform_get_irq_byname(pdev, "fdma"); 1089 if (lan966x->fdma_irq > 0) { 1090 err = devm_request_irq(&pdev->dev, lan966x->fdma_irq, 1091 lan966x_fdma_irq_handler, 0, 1092 "fdma irq", lan966x); 1093 if (err) 1094 return dev_err_probe(&pdev->dev, err, "Unable to use fdma irq"); 1095 1096 lan966x->fdma = true; 1097 } 1098 1099 if (lan966x->ptp) { 1100 lan966x->ptp_ext_irq = platform_get_irq_byname(pdev, "ptp-ext"); 1101 if (lan966x->ptp_ext_irq > 0) { 1102 err = devm_request_threaded_irq(&pdev->dev, 1103 lan966x->ptp_ext_irq, NULL, 1104 lan966x_ptp_ext_irq_handler, 1105 IRQF_ONESHOT, 1106 "ptp-ext irq", lan966x); 1107 if (err) 1108 return dev_err_probe(&pdev->dev, err, 1109 "Unable to use ptp-ext irq"); 1110 } 1111 } 1112 1113 /* init switch */ 1114 lan966x_init(lan966x); 1115 lan966x_stats_init(lan966x); 1116 1117 /* go over the child nodes */ 1118 fwnode_for_each_available_child_node(ports, portnp) { 1119 phy_interface_t phy_mode; 1120 struct phy *serdes; 1121 u32 p; 1122 1123 if (fwnode_property_read_u32(portnp, "reg", &p)) 1124 continue; 1125 1126 phy_mode = fwnode_get_phy_mode(portnp); 1127 err = lan966x_probe_port(lan966x, p, phy_mode, portnp); 1128 if (err) 1129 goto cleanup_ports; 1130 1131 /* Read needed configuration */ 1132 lan966x->ports[p]->config.portmode = phy_mode; 1133 lan966x->ports[p]->fwnode = fwnode_handle_get(portnp); 1134 1135 serdes = devm_of_phy_get(lan966x->dev, to_of_node(portnp), NULL); 1136 if (PTR_ERR(serdes) == -ENODEV) 1137 serdes = NULL; 1138 if (IS_ERR(serdes)) { 1139 err = PTR_ERR(serdes); 1140 goto cleanup_ports; 1141 } 1142 lan966x->ports[p]->serdes = serdes; 1143 1144 lan966x_port_init(lan966x->ports[p]); 1145 err = lan966x_xdp_port_init(lan966x->ports[p]); 1146 if (err) 1147 goto cleanup_ports; 1148 } 1149 1150 lan966x_mdb_init(lan966x); 1151 err = lan966x_fdb_init(lan966x); 1152 if (err) 1153 goto cleanup_ports; 1154 1155 err = lan966x_ptp_init(lan966x); 1156 if (err) 1157 goto cleanup_fdb; 1158 1159 err = lan966x_fdma_init(lan966x); 1160 if (err) 1161 goto cleanup_ptp; 1162 1163 err = lan966x_vcap_init(lan966x); 1164 if (err) 1165 goto cleanup_fdma; 1166 1167 return 0; 1168 1169 cleanup_fdma: 1170 lan966x_fdma_deinit(lan966x); 1171 1172 cleanup_ptp: 1173 lan966x_ptp_deinit(lan966x); 1174 1175 cleanup_fdb: 1176 lan966x_fdb_deinit(lan966x); 1177 1178 cleanup_ports: 1179 fwnode_handle_put(portnp); 1180 1181 lan966x_cleanup_ports(lan966x); 1182 1183 cancel_delayed_work_sync(&lan966x->stats_work); 1184 destroy_workqueue(lan966x->stats_queue); 1185 mutex_destroy(&lan966x->stats_lock); 1186 1187 return err; 1188 } 1189 1190 static int lan966x_remove(struct platform_device *pdev) 1191 { 1192 struct lan966x *lan966x = platform_get_drvdata(pdev); 1193 1194 lan966x_taprio_deinit(lan966x); 1195 lan966x_vcap_deinit(lan966x); 1196 lan966x_fdma_deinit(lan966x); 1197 lan966x_cleanup_ports(lan966x); 1198 1199 cancel_delayed_work_sync(&lan966x->stats_work); 1200 destroy_workqueue(lan966x->stats_queue); 1201 mutex_destroy(&lan966x->stats_lock); 1202 1203 lan966x_mac_purge_entries(lan966x); 1204 lan966x_mdb_deinit(lan966x); 1205 lan966x_fdb_deinit(lan966x); 1206 lan966x_ptp_deinit(lan966x); 1207 1208 return 0; 1209 } 1210 1211 static struct platform_driver lan966x_driver = { 1212 .probe = lan966x_probe, 1213 .remove = lan966x_remove, 1214 .driver = { 1215 .name = "lan966x-switch", 1216 .of_match_table = lan966x_match, 1217 }, 1218 }; 1219 1220 static int __init lan966x_switch_driver_init(void) 1221 { 1222 int ret; 1223 1224 lan966x_register_notifier_blocks(); 1225 1226 ret = platform_driver_register(&lan966x_driver); 1227 if (ret) 1228 goto err; 1229 1230 return 0; 1231 1232 err: 1233 lan966x_unregister_notifier_blocks(); 1234 return ret; 1235 } 1236 1237 static void __exit lan966x_switch_driver_exit(void) 1238 { 1239 platform_driver_unregister(&lan966x_driver); 1240 lan966x_unregister_notifier_blocks(); 1241 } 1242 1243 module_init(lan966x_switch_driver_init); 1244 module_exit(lan966x_switch_driver_exit); 1245 1246 MODULE_DESCRIPTION("Microchip LAN966X switch driver"); 1247 MODULE_AUTHOR("Horatiu Vultur <horatiu.vultur@microchip.com>"); 1248 MODULE_LICENSE("Dual MIT/GPL"); 1249