1 // SPDX-License-Identifier: (GPL-2.0 OR MIT) 2 /* 3 * Microsemi Ocelot Switch driver 4 * 5 * Copyright (c) 2017 Microsemi Corporation 6 */ 7 #include <linux/etherdevice.h> 8 #include <linux/ethtool.h> 9 #include <linux/if_bridge.h> 10 #include <linux/if_ether.h> 11 #include <linux/if_vlan.h> 12 #include <linux/interrupt.h> 13 #include <linux/kernel.h> 14 #include <linux/module.h> 15 #include <linux/netdevice.h> 16 #include <linux/phy.h> 17 #include <linux/ptp_clock_kernel.h> 18 #include <linux/skbuff.h> 19 #include <linux/iopoll.h> 20 #include <net/arp.h> 21 #include <net/netevent.h> 22 #include <net/rtnetlink.h> 23 #include <net/switchdev.h> 24 25 #include "ocelot.h" 26 #include "ocelot_ace.h" 27 28 #define TABLE_UPDATE_SLEEP_US 10 29 #define TABLE_UPDATE_TIMEOUT_US 100000 30 31 /* MAC table entry types. 32 * ENTRYTYPE_NORMAL is subject to aging. 33 * ENTRYTYPE_LOCKED is not subject to aging. 34 * ENTRYTYPE_MACv4 is not subject to aging. For IPv4 multicast. 35 * ENTRYTYPE_MACv6 is not subject to aging. For IPv6 multicast. 36 */ 37 enum macaccess_entry_type { 38 ENTRYTYPE_NORMAL = 0, 39 ENTRYTYPE_LOCKED, 40 ENTRYTYPE_MACv4, 41 ENTRYTYPE_MACv6, 42 }; 43 44 struct ocelot_mact_entry { 45 u8 mac[ETH_ALEN]; 46 u16 vid; 47 enum macaccess_entry_type type; 48 }; 49 50 static inline u32 ocelot_mact_read_macaccess(struct ocelot *ocelot) 51 { 52 return ocelot_read(ocelot, ANA_TABLES_MACACCESS); 53 } 54 55 static inline int ocelot_mact_wait_for_completion(struct ocelot *ocelot) 56 { 57 u32 val; 58 59 return readx_poll_timeout(ocelot_mact_read_macaccess, 60 ocelot, val, 61 (val & ANA_TABLES_MACACCESS_MAC_TABLE_CMD_M) == 62 MACACCESS_CMD_IDLE, 63 TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US); 64 } 65 66 static void ocelot_mact_select(struct ocelot *ocelot, 67 const unsigned char mac[ETH_ALEN], 68 unsigned int vid) 69 { 70 u32 macl = 0, mach = 0; 71 72 /* Set the MAC address to handle and the vlan associated in a format 73 * understood by the hardware. 74 */ 75 mach |= vid << 16; 76 mach |= mac[0] << 8; 77 mach |= mac[1] << 0; 78 macl |= mac[2] << 24; 79 macl |= mac[3] << 16; 80 macl |= mac[4] << 8; 81 macl |= mac[5] << 0; 82 83 ocelot_write(ocelot, macl, ANA_TABLES_MACLDATA); 84 ocelot_write(ocelot, mach, ANA_TABLES_MACHDATA); 85 86 } 87 88 static int ocelot_mact_learn(struct ocelot *ocelot, int port, 89 const unsigned char mac[ETH_ALEN], 90 unsigned int vid, 91 enum macaccess_entry_type type) 92 { 93 ocelot_mact_select(ocelot, mac, vid); 94 95 /* Issue a write command */ 96 ocelot_write(ocelot, ANA_TABLES_MACACCESS_VALID | 97 ANA_TABLES_MACACCESS_DEST_IDX(port) | 98 ANA_TABLES_MACACCESS_ENTRYTYPE(type) | 99 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_LEARN), 100 ANA_TABLES_MACACCESS); 101 102 return ocelot_mact_wait_for_completion(ocelot); 103 } 104 105 static int ocelot_mact_forget(struct ocelot *ocelot, 106 const unsigned char mac[ETH_ALEN], 107 unsigned int vid) 108 { 109 ocelot_mact_select(ocelot, mac, vid); 110 111 /* Issue a forget command */ 112 ocelot_write(ocelot, 113 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_FORGET), 114 ANA_TABLES_MACACCESS); 115 116 return ocelot_mact_wait_for_completion(ocelot); 117 } 118 119 static void ocelot_mact_init(struct ocelot *ocelot) 120 { 121 /* Configure the learning mode entries attributes: 122 * - Do not copy the frame to the CPU extraction queues. 123 * - Use the vlan and mac_cpoy for dmac lookup. 124 */ 125 ocelot_rmw(ocelot, 0, 126 ANA_AGENCTRL_LEARN_CPU_COPY | ANA_AGENCTRL_IGNORE_DMAC_FLAGS 127 | ANA_AGENCTRL_LEARN_FWD_KILL 128 | ANA_AGENCTRL_LEARN_IGNORE_VLAN, 129 ANA_AGENCTRL); 130 131 /* Clear the MAC table */ 132 ocelot_write(ocelot, MACACCESS_CMD_INIT, ANA_TABLES_MACACCESS); 133 } 134 135 static void ocelot_vcap_enable(struct ocelot *ocelot, int port) 136 { 137 ocelot_write_gix(ocelot, ANA_PORT_VCAP_S2_CFG_S2_ENA | 138 ANA_PORT_VCAP_S2_CFG_S2_IP6_CFG(0xa), 139 ANA_PORT_VCAP_S2_CFG, port); 140 } 141 142 static inline u32 ocelot_vlant_read_vlanaccess(struct ocelot *ocelot) 143 { 144 return ocelot_read(ocelot, ANA_TABLES_VLANACCESS); 145 } 146 147 static inline int ocelot_vlant_wait_for_completion(struct ocelot *ocelot) 148 { 149 u32 val; 150 151 return readx_poll_timeout(ocelot_vlant_read_vlanaccess, 152 ocelot, 153 val, 154 (val & ANA_TABLES_VLANACCESS_VLAN_TBL_CMD_M) == 155 ANA_TABLES_VLANACCESS_CMD_IDLE, 156 TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US); 157 } 158 159 static int ocelot_vlant_set_mask(struct ocelot *ocelot, u16 vid, u32 mask) 160 { 161 /* Select the VID to configure */ 162 ocelot_write(ocelot, ANA_TABLES_VLANTIDX_V_INDEX(vid), 163 ANA_TABLES_VLANTIDX); 164 /* Set the vlan port members mask and issue a write command */ 165 ocelot_write(ocelot, ANA_TABLES_VLANACCESS_VLAN_PORT_MASK(mask) | 166 ANA_TABLES_VLANACCESS_CMD_WRITE, 167 ANA_TABLES_VLANACCESS); 168 169 return ocelot_vlant_wait_for_completion(ocelot); 170 } 171 172 static void ocelot_vlan_mode(struct ocelot *ocelot, int port, 173 netdev_features_t features) 174 { 175 u32 val; 176 177 /* Filtering */ 178 val = ocelot_read(ocelot, ANA_VLANMASK); 179 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) 180 val |= BIT(port); 181 else 182 val &= ~BIT(port); 183 ocelot_write(ocelot, val, ANA_VLANMASK); 184 } 185 186 static int ocelot_port_set_native_vlan(struct ocelot *ocelot, int port, 187 u16 vid) 188 { 189 struct ocelot_port *ocelot_port = ocelot->ports[port]; 190 u32 val = 0; 191 192 if (ocelot_port->vid != vid) { 193 /* Always permit deleting the native VLAN (vid = 0) */ 194 if (ocelot_port->vid && vid) { 195 dev_err(ocelot->dev, 196 "Port already has a native VLAN: %d\n", 197 ocelot_port->vid); 198 return -EBUSY; 199 } 200 ocelot_port->vid = vid; 201 } 202 203 ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_VID(vid), 204 REW_PORT_VLAN_CFG_PORT_VID_M, 205 REW_PORT_VLAN_CFG, port); 206 207 if (ocelot_port->vlan_aware && !ocelot_port->vid) 208 /* If port is vlan-aware and tagged, drop untagged and priority 209 * tagged frames. 210 */ 211 val = ANA_PORT_DROP_CFG_DROP_UNTAGGED_ENA | 212 ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA | 213 ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA; 214 ocelot_rmw_gix(ocelot, val, 215 ANA_PORT_DROP_CFG_DROP_UNTAGGED_ENA | 216 ANA_PORT_DROP_CFG_DROP_PRIO_S_TAGGED_ENA | 217 ANA_PORT_DROP_CFG_DROP_PRIO_C_TAGGED_ENA, 218 ANA_PORT_DROP_CFG, port); 219 220 if (ocelot_port->vlan_aware) { 221 if (ocelot_port->vid) 222 /* Tag all frames except when VID == DEFAULT_VLAN */ 223 val = REW_TAG_CFG_TAG_CFG(1); 224 else 225 /* Tag all frames */ 226 val = REW_TAG_CFG_TAG_CFG(3); 227 } else { 228 /* Port tagging disabled. */ 229 val = REW_TAG_CFG_TAG_CFG(0); 230 } 231 ocelot_rmw_gix(ocelot, val, 232 REW_TAG_CFG_TAG_CFG_M, 233 REW_TAG_CFG, port); 234 235 return 0; 236 } 237 238 void ocelot_port_vlan_filtering(struct ocelot *ocelot, int port, 239 bool vlan_aware) 240 { 241 struct ocelot_port *ocelot_port = ocelot->ports[port]; 242 u32 val; 243 244 ocelot_port->vlan_aware = vlan_aware; 245 246 if (vlan_aware) 247 val = ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA | 248 ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1); 249 else 250 val = 0; 251 ocelot_rmw_gix(ocelot, val, 252 ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA | 253 ANA_PORT_VLAN_CFG_VLAN_POP_CNT_M, 254 ANA_PORT_VLAN_CFG, port); 255 256 ocelot_port_set_native_vlan(ocelot, port, ocelot_port->vid); 257 } 258 EXPORT_SYMBOL(ocelot_port_vlan_filtering); 259 260 /* Default vlan to clasify for untagged frames (may be zero) */ 261 static void ocelot_port_set_pvid(struct ocelot *ocelot, int port, u16 pvid) 262 { 263 struct ocelot_port *ocelot_port = ocelot->ports[port]; 264 265 ocelot_rmw_gix(ocelot, 266 ANA_PORT_VLAN_CFG_VLAN_VID(pvid), 267 ANA_PORT_VLAN_CFG_VLAN_VID_M, 268 ANA_PORT_VLAN_CFG, port); 269 270 ocelot_port->pvid = pvid; 271 } 272 273 int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid, 274 bool untagged) 275 { 276 int ret; 277 278 /* Make the port a member of the VLAN */ 279 ocelot->vlan_mask[vid] |= BIT(port); 280 ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]); 281 if (ret) 282 return ret; 283 284 /* Default ingress vlan classification */ 285 if (pvid) 286 ocelot_port_set_pvid(ocelot, port, vid); 287 288 /* Untagged egress vlan clasification */ 289 if (untagged) { 290 ret = ocelot_port_set_native_vlan(ocelot, port, vid); 291 if (ret) 292 return ret; 293 } 294 295 return 0; 296 } 297 EXPORT_SYMBOL(ocelot_vlan_add); 298 299 static int ocelot_vlan_vid_add(struct net_device *dev, u16 vid, bool pvid, 300 bool untagged) 301 { 302 struct ocelot_port_private *priv = netdev_priv(dev); 303 struct ocelot_port *ocelot_port = &priv->port; 304 struct ocelot *ocelot = ocelot_port->ocelot; 305 int port = priv->chip_port; 306 int ret; 307 308 ret = ocelot_vlan_add(ocelot, port, vid, pvid, untagged); 309 if (ret) 310 return ret; 311 312 /* Add the port MAC address to with the right VLAN information */ 313 ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, vid, 314 ENTRYTYPE_LOCKED); 315 316 return 0; 317 } 318 319 int ocelot_vlan_del(struct ocelot *ocelot, int port, u16 vid) 320 { 321 struct ocelot_port *ocelot_port = ocelot->ports[port]; 322 int ret; 323 324 /* Stop the port from being a member of the vlan */ 325 ocelot->vlan_mask[vid] &= ~BIT(port); 326 ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]); 327 if (ret) 328 return ret; 329 330 /* Ingress */ 331 if (ocelot_port->pvid == vid) 332 ocelot_port_set_pvid(ocelot, port, 0); 333 334 /* Egress */ 335 if (ocelot_port->vid == vid) 336 ocelot_port_set_native_vlan(ocelot, port, 0); 337 338 return 0; 339 } 340 EXPORT_SYMBOL(ocelot_vlan_del); 341 342 static int ocelot_vlan_vid_del(struct net_device *dev, u16 vid) 343 { 344 struct ocelot_port_private *priv = netdev_priv(dev); 345 struct ocelot *ocelot = priv->port.ocelot; 346 int port = priv->chip_port; 347 int ret; 348 349 /* 8021q removes VID 0 on module unload for all interfaces 350 * with VLAN filtering feature. We need to keep it to receive 351 * untagged traffic. 352 */ 353 if (vid == 0) 354 return 0; 355 356 ret = ocelot_vlan_del(ocelot, port, vid); 357 if (ret) 358 return ret; 359 360 /* Del the port MAC address to with the right VLAN information */ 361 ocelot_mact_forget(ocelot, dev->dev_addr, vid); 362 363 return 0; 364 } 365 366 static void ocelot_vlan_init(struct ocelot *ocelot) 367 { 368 u16 port, vid; 369 370 /* Clear VLAN table, by default all ports are members of all VLANs */ 371 ocelot_write(ocelot, ANA_TABLES_VLANACCESS_CMD_INIT, 372 ANA_TABLES_VLANACCESS); 373 ocelot_vlant_wait_for_completion(ocelot); 374 375 /* Configure the port VLAN memberships */ 376 for (vid = 1; vid < VLAN_N_VID; vid++) { 377 ocelot->vlan_mask[vid] = 0; 378 ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]); 379 } 380 381 /* Because VLAN filtering is enabled, we need VID 0 to get untagged 382 * traffic. It is added automatically if 8021q module is loaded, but 383 * we can't rely on it since module may be not loaded. 384 */ 385 ocelot->vlan_mask[0] = GENMASK(ocelot->num_phys_ports - 1, 0); 386 ocelot_vlant_set_mask(ocelot, 0, ocelot->vlan_mask[0]); 387 388 /* Set vlan ingress filter mask to all ports but the CPU port by 389 * default. 390 */ 391 ocelot_write(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0), 392 ANA_VLANMASK); 393 394 for (port = 0; port < ocelot->num_phys_ports; port++) { 395 ocelot_write_gix(ocelot, 0, REW_PORT_VLAN_CFG, port); 396 ocelot_write_gix(ocelot, 0, REW_TAG_CFG, port); 397 } 398 } 399 400 /* Watermark encode 401 * Bit 8: Unit; 0:1, 1:16 402 * Bit 7-0: Value to be multiplied with unit 403 */ 404 static u16 ocelot_wm_enc(u16 value) 405 { 406 if (value >= BIT(8)) 407 return BIT(8) | (value / 16); 408 409 return value; 410 } 411 412 void ocelot_adjust_link(struct ocelot *ocelot, int port, 413 struct phy_device *phydev) 414 { 415 struct ocelot_port *ocelot_port = ocelot->ports[port]; 416 int speed, mode = 0; 417 418 switch (phydev->speed) { 419 case SPEED_10: 420 speed = OCELOT_SPEED_10; 421 break; 422 case SPEED_100: 423 speed = OCELOT_SPEED_100; 424 break; 425 case SPEED_1000: 426 speed = OCELOT_SPEED_1000; 427 mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA; 428 break; 429 case SPEED_2500: 430 speed = OCELOT_SPEED_2500; 431 mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA; 432 break; 433 default: 434 dev_err(ocelot->dev, "Unsupported PHY speed on port %d: %d\n", 435 port, phydev->speed); 436 return; 437 } 438 439 phy_print_status(phydev); 440 441 if (!phydev->link) 442 return; 443 444 /* Only full duplex supported for now */ 445 ocelot_port_writel(ocelot_port, DEV_MAC_MODE_CFG_FDX_ENA | 446 mode, DEV_MAC_MODE_CFG); 447 448 /* Disable HDX fast control */ 449 ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS, 450 DEV_PORT_MISC); 451 452 /* SGMII only for now */ 453 ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA, 454 PCS1G_MODE_CFG); 455 ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG); 456 457 /* Enable PCS */ 458 ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG); 459 460 /* No aneg on SGMII */ 461 ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG); 462 463 /* No loopback */ 464 ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG); 465 466 /* Enable MAC module */ 467 ocelot_port_writel(ocelot_port, DEV_MAC_ENA_CFG_RX_ENA | 468 DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG); 469 470 /* Take MAC, Port, Phy (intern) and PCS (SGMII/Serdes) clock out of 471 * reset */ 472 ocelot_port_writel(ocelot_port, DEV_CLOCK_CFG_LINK_SPEED(speed), 473 DEV_CLOCK_CFG); 474 475 /* No PFC */ 476 ocelot_write_gix(ocelot, ANA_PFC_PFC_CFG_FC_LINK_SPEED(speed), 477 ANA_PFC_PFC_CFG, port); 478 479 /* Core: Enable port for frame transfer */ 480 ocelot_write_rix(ocelot, QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE | 481 QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) | 482 QSYS_SWITCH_PORT_MODE_PORT_ENA, 483 QSYS_SWITCH_PORT_MODE, port); 484 485 /* Flow control */ 486 ocelot_write_rix(ocelot, SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) | 487 SYS_MAC_FC_CFG_RX_FC_ENA | SYS_MAC_FC_CFG_TX_FC_ENA | 488 SYS_MAC_FC_CFG_ZERO_PAUSE_ENA | 489 SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) | 490 SYS_MAC_FC_CFG_FC_LINK_SPEED(speed), 491 SYS_MAC_FC_CFG, port); 492 ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port); 493 } 494 EXPORT_SYMBOL(ocelot_adjust_link); 495 496 static void ocelot_port_adjust_link(struct net_device *dev) 497 { 498 struct ocelot_port_private *priv = netdev_priv(dev); 499 struct ocelot *ocelot = priv->port.ocelot; 500 int port = priv->chip_port; 501 502 ocelot_adjust_link(ocelot, port, dev->phydev); 503 } 504 505 void ocelot_port_enable(struct ocelot *ocelot, int port, 506 struct phy_device *phy) 507 { 508 /* Enable receiving frames on the port, and activate auto-learning of 509 * MAC addresses. 510 */ 511 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO | 512 ANA_PORT_PORT_CFG_RECV_ENA | 513 ANA_PORT_PORT_CFG_PORTID_VAL(port), 514 ANA_PORT_PORT_CFG, port); 515 } 516 EXPORT_SYMBOL(ocelot_port_enable); 517 518 static int ocelot_port_open(struct net_device *dev) 519 { 520 struct ocelot_port_private *priv = netdev_priv(dev); 521 struct ocelot_port *ocelot_port = &priv->port; 522 struct ocelot *ocelot = ocelot_port->ocelot; 523 int port = priv->chip_port; 524 int err; 525 526 if (priv->serdes) { 527 err = phy_set_mode_ext(priv->serdes, PHY_MODE_ETHERNET, 528 ocelot_port->phy_mode); 529 if (err) { 530 netdev_err(dev, "Could not set mode of SerDes\n"); 531 return err; 532 } 533 } 534 535 err = phy_connect_direct(dev, priv->phy, &ocelot_port_adjust_link, 536 ocelot_port->phy_mode); 537 if (err) { 538 netdev_err(dev, "Could not attach to PHY\n"); 539 return err; 540 } 541 542 dev->phydev = priv->phy; 543 544 phy_attached_info(priv->phy); 545 phy_start(priv->phy); 546 547 ocelot_port_enable(ocelot, port, priv->phy); 548 549 return 0; 550 } 551 552 void ocelot_port_disable(struct ocelot *ocelot, int port) 553 { 554 struct ocelot_port *ocelot_port = ocelot->ports[port]; 555 556 ocelot_port_writel(ocelot_port, 0, DEV_MAC_ENA_CFG); 557 ocelot_rmw_rix(ocelot, 0, QSYS_SWITCH_PORT_MODE_PORT_ENA, 558 QSYS_SWITCH_PORT_MODE, port); 559 } 560 EXPORT_SYMBOL(ocelot_port_disable); 561 562 static int ocelot_port_stop(struct net_device *dev) 563 { 564 struct ocelot_port_private *priv = netdev_priv(dev); 565 struct ocelot *ocelot = priv->port.ocelot; 566 int port = priv->chip_port; 567 568 phy_disconnect(priv->phy); 569 570 dev->phydev = NULL; 571 572 ocelot_port_disable(ocelot, port); 573 574 return 0; 575 } 576 577 /* Generate the IFH for frame injection 578 * 579 * The IFH is a 128bit-value 580 * bit 127: bypass the analyzer processing 581 * bit 56-67: destination mask 582 * bit 28-29: pop_cnt: 3 disables all rewriting of the frame 583 * bit 20-27: cpu extraction queue mask 584 * bit 16: tag type 0: C-tag, 1: S-tag 585 * bit 0-11: VID 586 */ 587 static int ocelot_gen_ifh(u32 *ifh, struct frame_info *info) 588 { 589 ifh[0] = IFH_INJ_BYPASS | ((0x1ff & info->rew_op) << 21); 590 ifh[1] = (0xf00 & info->port) >> 8; 591 ifh[2] = (0xff & info->port) << 24; 592 ifh[3] = (info->tag_type << 16) | info->vid; 593 594 return 0; 595 } 596 597 int ocelot_port_add_txtstamp_skb(struct ocelot_port *ocelot_port, 598 struct sk_buff *skb) 599 { 600 struct skb_shared_info *shinfo = skb_shinfo(skb); 601 struct ocelot *ocelot = ocelot_port->ocelot; 602 603 if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP && 604 ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) { 605 shinfo->tx_flags |= SKBTX_IN_PROGRESS; 606 /* Store timestamp ID in cb[0] of sk_buff */ 607 skb->cb[0] = ocelot_port->ts_id % 4; 608 skb_queue_tail(&ocelot_port->tx_skbs, skb); 609 return 0; 610 } 611 return -ENODATA; 612 } 613 EXPORT_SYMBOL(ocelot_port_add_txtstamp_skb); 614 615 static int ocelot_port_xmit(struct sk_buff *skb, struct net_device *dev) 616 { 617 struct ocelot_port_private *priv = netdev_priv(dev); 618 struct skb_shared_info *shinfo = skb_shinfo(skb); 619 struct ocelot_port *ocelot_port = &priv->port; 620 struct ocelot *ocelot = ocelot_port->ocelot; 621 u32 val, ifh[OCELOT_TAG_LEN / 4]; 622 struct frame_info info = {}; 623 u8 grp = 0; /* Send everything on CPU group 0 */ 624 unsigned int i, count, last; 625 int port = priv->chip_port; 626 627 val = ocelot_read(ocelot, QS_INJ_STATUS); 628 if (!(val & QS_INJ_STATUS_FIFO_RDY(BIT(grp))) || 629 (val & QS_INJ_STATUS_WMARK_REACHED(BIT(grp)))) 630 return NETDEV_TX_BUSY; 631 632 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | 633 QS_INJ_CTRL_SOF, QS_INJ_CTRL, grp); 634 635 info.port = BIT(port); 636 info.tag_type = IFH_TAG_TYPE_C; 637 info.vid = skb_vlan_tag_get(skb); 638 639 /* Check if timestamping is needed */ 640 if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP) { 641 info.rew_op = ocelot_port->ptp_cmd; 642 if (ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) 643 info.rew_op |= (ocelot_port->ts_id % 4) << 3; 644 } 645 646 ocelot_gen_ifh(ifh, &info); 647 648 for (i = 0; i < OCELOT_TAG_LEN / 4; i++) 649 ocelot_write_rix(ocelot, (__force u32)cpu_to_be32(ifh[i]), 650 QS_INJ_WR, grp); 651 652 count = (skb->len + 3) / 4; 653 last = skb->len % 4; 654 for (i = 0; i < count; i++) { 655 ocelot_write_rix(ocelot, ((u32 *)skb->data)[i], QS_INJ_WR, grp); 656 } 657 658 /* Add padding */ 659 while (i < (OCELOT_BUFFER_CELL_SZ / 4)) { 660 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp); 661 i++; 662 } 663 664 /* Indicate EOF and valid bytes in last word */ 665 ocelot_write_rix(ocelot, QS_INJ_CTRL_GAP_SIZE(1) | 666 QS_INJ_CTRL_VLD_BYTES(skb->len < OCELOT_BUFFER_CELL_SZ ? 0 : last) | 667 QS_INJ_CTRL_EOF, 668 QS_INJ_CTRL, grp); 669 670 /* Add dummy CRC */ 671 ocelot_write_rix(ocelot, 0, QS_INJ_WR, grp); 672 skb_tx_timestamp(skb); 673 674 dev->stats.tx_packets++; 675 dev->stats.tx_bytes += skb->len; 676 677 if (!ocelot_port_add_txtstamp_skb(ocelot_port, skb)) { 678 ocelot_port->ts_id++; 679 return NETDEV_TX_OK; 680 } 681 682 dev_kfree_skb_any(skb); 683 return NETDEV_TX_OK; 684 } 685 686 static void ocelot_get_hwtimestamp(struct ocelot *ocelot, 687 struct timespec64 *ts) 688 { 689 unsigned long flags; 690 u32 val; 691 692 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags); 693 694 /* Read current PTP time to get seconds */ 695 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN); 696 697 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM); 698 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_SAVE); 699 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN); 700 ts->tv_sec = ocelot_read_rix(ocelot, PTP_PIN_TOD_SEC_LSB, TOD_ACC_PIN); 701 702 /* Read packet HW timestamp from FIFO */ 703 val = ocelot_read(ocelot, SYS_PTP_TXSTAMP); 704 ts->tv_nsec = SYS_PTP_TXSTAMP_PTP_TXSTAMP(val); 705 706 /* Sec has incremented since the ts was registered */ 707 if ((ts->tv_sec & 0x1) != !!(val & SYS_PTP_TXSTAMP_PTP_TXSTAMP_SEC)) 708 ts->tv_sec--; 709 710 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags); 711 } 712 713 void ocelot_get_txtstamp(struct ocelot *ocelot) 714 { 715 int budget = OCELOT_PTP_QUEUE_SZ; 716 717 while (budget--) { 718 struct sk_buff *skb, *skb_tmp, *skb_match = NULL; 719 struct skb_shared_hwtstamps shhwtstamps; 720 struct ocelot_port *port; 721 struct timespec64 ts; 722 unsigned long flags; 723 u32 val, id, txport; 724 725 val = ocelot_read(ocelot, SYS_PTP_STATUS); 726 727 /* Check if a timestamp can be retrieved */ 728 if (!(val & SYS_PTP_STATUS_PTP_MESS_VLD)) 729 break; 730 731 WARN_ON(val & SYS_PTP_STATUS_PTP_OVFL); 732 733 /* Retrieve the ts ID and Tx port */ 734 id = SYS_PTP_STATUS_PTP_MESS_ID_X(val); 735 txport = SYS_PTP_STATUS_PTP_MESS_TXPORT_X(val); 736 737 /* Retrieve its associated skb */ 738 port = ocelot->ports[txport]; 739 740 spin_lock_irqsave(&port->tx_skbs.lock, flags); 741 742 skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) { 743 if (skb->cb[0] != id) 744 continue; 745 __skb_unlink(skb, &port->tx_skbs); 746 skb_match = skb; 747 break; 748 } 749 750 spin_unlock_irqrestore(&port->tx_skbs.lock, flags); 751 752 /* Next ts */ 753 ocelot_write(ocelot, SYS_PTP_NXT_PTP_NXT, SYS_PTP_NXT); 754 755 if (unlikely(!skb_match)) 756 continue; 757 758 /* Get the h/w timestamp */ 759 ocelot_get_hwtimestamp(ocelot, &ts); 760 761 /* Set the timestamp into the skb */ 762 memset(&shhwtstamps, 0, sizeof(shhwtstamps)); 763 shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec); 764 skb_tstamp_tx(skb_match, &shhwtstamps); 765 766 dev_kfree_skb_any(skb_match); 767 } 768 } 769 EXPORT_SYMBOL(ocelot_get_txtstamp); 770 771 static int ocelot_mc_unsync(struct net_device *dev, const unsigned char *addr) 772 { 773 struct ocelot_port_private *priv = netdev_priv(dev); 774 struct ocelot_port *ocelot_port = &priv->port; 775 struct ocelot *ocelot = ocelot_port->ocelot; 776 777 return ocelot_mact_forget(ocelot, addr, ocelot_port->pvid); 778 } 779 780 static int ocelot_mc_sync(struct net_device *dev, const unsigned char *addr) 781 { 782 struct ocelot_port_private *priv = netdev_priv(dev); 783 struct ocelot_port *ocelot_port = &priv->port; 784 struct ocelot *ocelot = ocelot_port->ocelot; 785 786 return ocelot_mact_learn(ocelot, PGID_CPU, addr, ocelot_port->pvid, 787 ENTRYTYPE_LOCKED); 788 } 789 790 static void ocelot_set_rx_mode(struct net_device *dev) 791 { 792 struct ocelot_port_private *priv = netdev_priv(dev); 793 struct ocelot *ocelot = priv->port.ocelot; 794 u32 val; 795 int i; 796 797 /* This doesn't handle promiscuous mode because the bridge core is 798 * setting IFF_PROMISC on all slave interfaces and all frames would be 799 * forwarded to the CPU port. 800 */ 801 val = GENMASK(ocelot->num_phys_ports - 1, 0); 802 for (i = ocelot->num_phys_ports + 1; i < PGID_CPU; i++) 803 ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i); 804 805 __dev_mc_sync(dev, ocelot_mc_sync, ocelot_mc_unsync); 806 } 807 808 static int ocelot_port_get_phys_port_name(struct net_device *dev, 809 char *buf, size_t len) 810 { 811 struct ocelot_port_private *priv = netdev_priv(dev); 812 int port = priv->chip_port; 813 int ret; 814 815 ret = snprintf(buf, len, "p%d", port); 816 if (ret >= len) 817 return -EINVAL; 818 819 return 0; 820 } 821 822 static int ocelot_port_set_mac_address(struct net_device *dev, void *p) 823 { 824 struct ocelot_port_private *priv = netdev_priv(dev); 825 struct ocelot_port *ocelot_port = &priv->port; 826 struct ocelot *ocelot = ocelot_port->ocelot; 827 const struct sockaddr *addr = p; 828 829 /* Learn the new net device MAC address in the mac table. */ 830 ocelot_mact_learn(ocelot, PGID_CPU, addr->sa_data, ocelot_port->pvid, 831 ENTRYTYPE_LOCKED); 832 /* Then forget the previous one. */ 833 ocelot_mact_forget(ocelot, dev->dev_addr, ocelot_port->pvid); 834 835 ether_addr_copy(dev->dev_addr, addr->sa_data); 836 return 0; 837 } 838 839 static void ocelot_get_stats64(struct net_device *dev, 840 struct rtnl_link_stats64 *stats) 841 { 842 struct ocelot_port_private *priv = netdev_priv(dev); 843 struct ocelot *ocelot = priv->port.ocelot; 844 int port = priv->chip_port; 845 846 /* Configure the port to read the stats from */ 847 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port), 848 SYS_STAT_CFG); 849 850 /* Get Rx stats */ 851 stats->rx_bytes = ocelot_read(ocelot, SYS_COUNT_RX_OCTETS); 852 stats->rx_packets = ocelot_read(ocelot, SYS_COUNT_RX_SHORTS) + 853 ocelot_read(ocelot, SYS_COUNT_RX_FRAGMENTS) + 854 ocelot_read(ocelot, SYS_COUNT_RX_JABBERS) + 855 ocelot_read(ocelot, SYS_COUNT_RX_LONGS) + 856 ocelot_read(ocelot, SYS_COUNT_RX_64) + 857 ocelot_read(ocelot, SYS_COUNT_RX_65_127) + 858 ocelot_read(ocelot, SYS_COUNT_RX_128_255) + 859 ocelot_read(ocelot, SYS_COUNT_RX_256_1023) + 860 ocelot_read(ocelot, SYS_COUNT_RX_1024_1526) + 861 ocelot_read(ocelot, SYS_COUNT_RX_1527_MAX); 862 stats->multicast = ocelot_read(ocelot, SYS_COUNT_RX_MULTICAST); 863 stats->rx_dropped = dev->stats.rx_dropped; 864 865 /* Get Tx stats */ 866 stats->tx_bytes = ocelot_read(ocelot, SYS_COUNT_TX_OCTETS); 867 stats->tx_packets = ocelot_read(ocelot, SYS_COUNT_TX_64) + 868 ocelot_read(ocelot, SYS_COUNT_TX_65_127) + 869 ocelot_read(ocelot, SYS_COUNT_TX_128_511) + 870 ocelot_read(ocelot, SYS_COUNT_TX_512_1023) + 871 ocelot_read(ocelot, SYS_COUNT_TX_1024_1526) + 872 ocelot_read(ocelot, SYS_COUNT_TX_1527_MAX); 873 stats->tx_dropped = ocelot_read(ocelot, SYS_COUNT_TX_DROPS) + 874 ocelot_read(ocelot, SYS_COUNT_TX_AGING); 875 stats->collisions = ocelot_read(ocelot, SYS_COUNT_TX_COLLISION); 876 } 877 878 int ocelot_fdb_add(struct ocelot *ocelot, int port, 879 const unsigned char *addr, u16 vid) 880 { 881 struct ocelot_port *ocelot_port = ocelot->ports[port]; 882 883 if (!vid) { 884 if (!ocelot_port->vlan_aware) 885 /* If the bridge is not VLAN aware and no VID was 886 * provided, set it to pvid to ensure the MAC entry 887 * matches incoming untagged packets 888 */ 889 vid = ocelot_port->pvid; 890 else 891 /* If the bridge is VLAN aware a VID must be provided as 892 * otherwise the learnt entry wouldn't match any frame. 893 */ 894 return -EINVAL; 895 } 896 897 return ocelot_mact_learn(ocelot, port, addr, vid, ENTRYTYPE_LOCKED); 898 } 899 EXPORT_SYMBOL(ocelot_fdb_add); 900 901 static int ocelot_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 902 struct net_device *dev, 903 const unsigned char *addr, 904 u16 vid, u16 flags, 905 struct netlink_ext_ack *extack) 906 { 907 struct ocelot_port_private *priv = netdev_priv(dev); 908 struct ocelot *ocelot = priv->port.ocelot; 909 int port = priv->chip_port; 910 911 return ocelot_fdb_add(ocelot, port, addr, vid); 912 } 913 914 int ocelot_fdb_del(struct ocelot *ocelot, int port, 915 const unsigned char *addr, u16 vid) 916 { 917 return ocelot_mact_forget(ocelot, addr, vid); 918 } 919 EXPORT_SYMBOL(ocelot_fdb_del); 920 921 static int ocelot_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[], 922 struct net_device *dev, 923 const unsigned char *addr, u16 vid) 924 { 925 struct ocelot_port_private *priv = netdev_priv(dev); 926 struct ocelot *ocelot = priv->port.ocelot; 927 int port = priv->chip_port; 928 929 return ocelot_fdb_del(ocelot, port, addr, vid); 930 } 931 932 struct ocelot_dump_ctx { 933 struct net_device *dev; 934 struct sk_buff *skb; 935 struct netlink_callback *cb; 936 int idx; 937 }; 938 939 static int ocelot_port_fdb_do_dump(const unsigned char *addr, u16 vid, 940 bool is_static, void *data) 941 { 942 struct ocelot_dump_ctx *dump = data; 943 u32 portid = NETLINK_CB(dump->cb->skb).portid; 944 u32 seq = dump->cb->nlh->nlmsg_seq; 945 struct nlmsghdr *nlh; 946 struct ndmsg *ndm; 947 948 if (dump->idx < dump->cb->args[2]) 949 goto skip; 950 951 nlh = nlmsg_put(dump->skb, portid, seq, RTM_NEWNEIGH, 952 sizeof(*ndm), NLM_F_MULTI); 953 if (!nlh) 954 return -EMSGSIZE; 955 956 ndm = nlmsg_data(nlh); 957 ndm->ndm_family = AF_BRIDGE; 958 ndm->ndm_pad1 = 0; 959 ndm->ndm_pad2 = 0; 960 ndm->ndm_flags = NTF_SELF; 961 ndm->ndm_type = 0; 962 ndm->ndm_ifindex = dump->dev->ifindex; 963 ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE; 964 965 if (nla_put(dump->skb, NDA_LLADDR, ETH_ALEN, addr)) 966 goto nla_put_failure; 967 968 if (vid && nla_put_u16(dump->skb, NDA_VLAN, vid)) 969 goto nla_put_failure; 970 971 nlmsg_end(dump->skb, nlh); 972 973 skip: 974 dump->idx++; 975 return 0; 976 977 nla_put_failure: 978 nlmsg_cancel(dump->skb, nlh); 979 return -EMSGSIZE; 980 } 981 982 static int ocelot_mact_read(struct ocelot *ocelot, int port, int row, int col, 983 struct ocelot_mact_entry *entry) 984 { 985 u32 val, dst, macl, mach; 986 char mac[ETH_ALEN]; 987 988 /* Set row and column to read from */ 989 ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_M_INDEX, row); 990 ocelot_field_write(ocelot, ANA_TABLES_MACTINDX_BUCKET, col); 991 992 /* Issue a read command */ 993 ocelot_write(ocelot, 994 ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_READ), 995 ANA_TABLES_MACACCESS); 996 997 if (ocelot_mact_wait_for_completion(ocelot)) 998 return -ETIMEDOUT; 999 1000 /* Read the entry flags */ 1001 val = ocelot_read(ocelot, ANA_TABLES_MACACCESS); 1002 if (!(val & ANA_TABLES_MACACCESS_VALID)) 1003 return -EINVAL; 1004 1005 /* If the entry read has another port configured as its destination, 1006 * do not report it. 1007 */ 1008 dst = (val & ANA_TABLES_MACACCESS_DEST_IDX_M) >> 3; 1009 if (dst != port) 1010 return -EINVAL; 1011 1012 /* Get the entry's MAC address and VLAN id */ 1013 macl = ocelot_read(ocelot, ANA_TABLES_MACLDATA); 1014 mach = ocelot_read(ocelot, ANA_TABLES_MACHDATA); 1015 1016 mac[0] = (mach >> 8) & 0xff; 1017 mac[1] = (mach >> 0) & 0xff; 1018 mac[2] = (macl >> 24) & 0xff; 1019 mac[3] = (macl >> 16) & 0xff; 1020 mac[4] = (macl >> 8) & 0xff; 1021 mac[5] = (macl >> 0) & 0xff; 1022 1023 entry->vid = (mach >> 16) & 0xfff; 1024 ether_addr_copy(entry->mac, mac); 1025 1026 return 0; 1027 } 1028 1029 int ocelot_fdb_dump(struct ocelot *ocelot, int port, 1030 dsa_fdb_dump_cb_t *cb, void *data) 1031 { 1032 int i, j; 1033 1034 /* Loop through all the mac tables entries. There are 1024 rows of 4 1035 * entries. 1036 */ 1037 for (i = 0; i < 1024; i++) { 1038 for (j = 0; j < 4; j++) { 1039 struct ocelot_mact_entry entry; 1040 bool is_static; 1041 int ret; 1042 1043 ret = ocelot_mact_read(ocelot, port, i, j, &entry); 1044 /* If the entry is invalid (wrong port, invalid...), 1045 * skip it. 1046 */ 1047 if (ret == -EINVAL) 1048 continue; 1049 else if (ret) 1050 return ret; 1051 1052 is_static = (entry.type == ENTRYTYPE_LOCKED); 1053 1054 ret = cb(entry.mac, entry.vid, is_static, data); 1055 if (ret) 1056 return ret; 1057 } 1058 } 1059 1060 return 0; 1061 } 1062 EXPORT_SYMBOL(ocelot_fdb_dump); 1063 1064 static int ocelot_port_fdb_dump(struct sk_buff *skb, 1065 struct netlink_callback *cb, 1066 struct net_device *dev, 1067 struct net_device *filter_dev, int *idx) 1068 { 1069 struct ocelot_port_private *priv = netdev_priv(dev); 1070 struct ocelot *ocelot = priv->port.ocelot; 1071 struct ocelot_dump_ctx dump = { 1072 .dev = dev, 1073 .skb = skb, 1074 .cb = cb, 1075 .idx = *idx, 1076 }; 1077 int port = priv->chip_port; 1078 int ret; 1079 1080 ret = ocelot_fdb_dump(ocelot, port, ocelot_port_fdb_do_dump, &dump); 1081 1082 *idx = dump.idx; 1083 1084 return ret; 1085 } 1086 1087 static int ocelot_vlan_rx_add_vid(struct net_device *dev, __be16 proto, 1088 u16 vid) 1089 { 1090 return ocelot_vlan_vid_add(dev, vid, false, false); 1091 } 1092 1093 static int ocelot_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, 1094 u16 vid) 1095 { 1096 return ocelot_vlan_vid_del(dev, vid); 1097 } 1098 1099 static int ocelot_set_features(struct net_device *dev, 1100 netdev_features_t features) 1101 { 1102 netdev_features_t changed = dev->features ^ features; 1103 struct ocelot_port_private *priv = netdev_priv(dev); 1104 struct ocelot *ocelot = priv->port.ocelot; 1105 int port = priv->chip_port; 1106 1107 if ((dev->features & NETIF_F_HW_TC) > (features & NETIF_F_HW_TC) && 1108 priv->tc.offload_cnt) { 1109 netdev_err(dev, 1110 "Cannot disable HW TC offload while offloads active\n"); 1111 return -EBUSY; 1112 } 1113 1114 if (changed & NETIF_F_HW_VLAN_CTAG_FILTER) 1115 ocelot_vlan_mode(ocelot, port, features); 1116 1117 return 0; 1118 } 1119 1120 static int ocelot_get_port_parent_id(struct net_device *dev, 1121 struct netdev_phys_item_id *ppid) 1122 { 1123 struct ocelot_port_private *priv = netdev_priv(dev); 1124 struct ocelot *ocelot = priv->port.ocelot; 1125 1126 ppid->id_len = sizeof(ocelot->base_mac); 1127 memcpy(&ppid->id, &ocelot->base_mac, ppid->id_len); 1128 1129 return 0; 1130 } 1131 1132 int ocelot_hwstamp_get(struct ocelot *ocelot, int port, struct ifreq *ifr) 1133 { 1134 return copy_to_user(ifr->ifr_data, &ocelot->hwtstamp_config, 1135 sizeof(ocelot->hwtstamp_config)) ? -EFAULT : 0; 1136 } 1137 EXPORT_SYMBOL(ocelot_hwstamp_get); 1138 1139 int ocelot_hwstamp_set(struct ocelot *ocelot, int port, struct ifreq *ifr) 1140 { 1141 struct ocelot_port *ocelot_port = ocelot->ports[port]; 1142 struct hwtstamp_config cfg; 1143 1144 if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) 1145 return -EFAULT; 1146 1147 /* reserved for future extensions */ 1148 if (cfg.flags) 1149 return -EINVAL; 1150 1151 /* Tx type sanity check */ 1152 switch (cfg.tx_type) { 1153 case HWTSTAMP_TX_ON: 1154 ocelot_port->ptp_cmd = IFH_REW_OP_TWO_STEP_PTP; 1155 break; 1156 case HWTSTAMP_TX_ONESTEP_SYNC: 1157 /* IFH_REW_OP_ONE_STEP_PTP updates the correctional field, we 1158 * need to update the origin time. 1159 */ 1160 ocelot_port->ptp_cmd = IFH_REW_OP_ORIGIN_PTP; 1161 break; 1162 case HWTSTAMP_TX_OFF: 1163 ocelot_port->ptp_cmd = 0; 1164 break; 1165 default: 1166 return -ERANGE; 1167 } 1168 1169 mutex_lock(&ocelot->ptp_lock); 1170 1171 switch (cfg.rx_filter) { 1172 case HWTSTAMP_FILTER_NONE: 1173 break; 1174 case HWTSTAMP_FILTER_ALL: 1175 case HWTSTAMP_FILTER_SOME: 1176 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: 1177 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: 1178 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: 1179 case HWTSTAMP_FILTER_NTP_ALL: 1180 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: 1181 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: 1182 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: 1183 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: 1184 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: 1185 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: 1186 case HWTSTAMP_FILTER_PTP_V2_EVENT: 1187 case HWTSTAMP_FILTER_PTP_V2_SYNC: 1188 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: 1189 cfg.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; 1190 break; 1191 default: 1192 mutex_unlock(&ocelot->ptp_lock); 1193 return -ERANGE; 1194 } 1195 1196 /* Commit back the result & save it */ 1197 memcpy(&ocelot->hwtstamp_config, &cfg, sizeof(cfg)); 1198 mutex_unlock(&ocelot->ptp_lock); 1199 1200 return copy_to_user(ifr->ifr_data, &cfg, sizeof(cfg)) ? -EFAULT : 0; 1201 } 1202 EXPORT_SYMBOL(ocelot_hwstamp_set); 1203 1204 static int ocelot_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) 1205 { 1206 struct ocelot_port_private *priv = netdev_priv(dev); 1207 struct ocelot *ocelot = priv->port.ocelot; 1208 int port = priv->chip_port; 1209 1210 /* The function is only used for PTP operations for now */ 1211 if (!ocelot->ptp) 1212 return -EOPNOTSUPP; 1213 1214 switch (cmd) { 1215 case SIOCSHWTSTAMP: 1216 return ocelot_hwstamp_set(ocelot, port, ifr); 1217 case SIOCGHWTSTAMP: 1218 return ocelot_hwstamp_get(ocelot, port, ifr); 1219 default: 1220 return -EOPNOTSUPP; 1221 } 1222 } 1223 1224 static const struct net_device_ops ocelot_port_netdev_ops = { 1225 .ndo_open = ocelot_port_open, 1226 .ndo_stop = ocelot_port_stop, 1227 .ndo_start_xmit = ocelot_port_xmit, 1228 .ndo_set_rx_mode = ocelot_set_rx_mode, 1229 .ndo_get_phys_port_name = ocelot_port_get_phys_port_name, 1230 .ndo_set_mac_address = ocelot_port_set_mac_address, 1231 .ndo_get_stats64 = ocelot_get_stats64, 1232 .ndo_fdb_add = ocelot_port_fdb_add, 1233 .ndo_fdb_del = ocelot_port_fdb_del, 1234 .ndo_fdb_dump = ocelot_port_fdb_dump, 1235 .ndo_vlan_rx_add_vid = ocelot_vlan_rx_add_vid, 1236 .ndo_vlan_rx_kill_vid = ocelot_vlan_rx_kill_vid, 1237 .ndo_set_features = ocelot_set_features, 1238 .ndo_get_port_parent_id = ocelot_get_port_parent_id, 1239 .ndo_setup_tc = ocelot_setup_tc, 1240 .ndo_do_ioctl = ocelot_ioctl, 1241 }; 1242 1243 void ocelot_get_strings(struct ocelot *ocelot, int port, u32 sset, u8 *data) 1244 { 1245 int i; 1246 1247 if (sset != ETH_SS_STATS) 1248 return; 1249 1250 for (i = 0; i < ocelot->num_stats; i++) 1251 memcpy(data + i * ETH_GSTRING_LEN, ocelot->stats_layout[i].name, 1252 ETH_GSTRING_LEN); 1253 } 1254 EXPORT_SYMBOL(ocelot_get_strings); 1255 1256 static void ocelot_port_get_strings(struct net_device *netdev, u32 sset, 1257 u8 *data) 1258 { 1259 struct ocelot_port_private *priv = netdev_priv(netdev); 1260 struct ocelot *ocelot = priv->port.ocelot; 1261 int port = priv->chip_port; 1262 1263 ocelot_get_strings(ocelot, port, sset, data); 1264 } 1265 1266 static void ocelot_update_stats(struct ocelot *ocelot) 1267 { 1268 int i, j; 1269 1270 mutex_lock(&ocelot->stats_lock); 1271 1272 for (i = 0; i < ocelot->num_phys_ports; i++) { 1273 /* Configure the port to read the stats from */ 1274 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(i), SYS_STAT_CFG); 1275 1276 for (j = 0; j < ocelot->num_stats; j++) { 1277 u32 val; 1278 unsigned int idx = i * ocelot->num_stats + j; 1279 1280 val = ocelot_read_rix(ocelot, SYS_COUNT_RX_OCTETS, 1281 ocelot->stats_layout[j].offset); 1282 1283 if (val < (ocelot->stats[idx] & U32_MAX)) 1284 ocelot->stats[idx] += (u64)1 << 32; 1285 1286 ocelot->stats[idx] = (ocelot->stats[idx] & 1287 ~(u64)U32_MAX) + val; 1288 } 1289 } 1290 1291 mutex_unlock(&ocelot->stats_lock); 1292 } 1293 1294 static void ocelot_check_stats_work(struct work_struct *work) 1295 { 1296 struct delayed_work *del_work = to_delayed_work(work); 1297 struct ocelot *ocelot = container_of(del_work, struct ocelot, 1298 stats_work); 1299 1300 ocelot_update_stats(ocelot); 1301 1302 queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work, 1303 OCELOT_STATS_CHECK_DELAY); 1304 } 1305 1306 void ocelot_get_ethtool_stats(struct ocelot *ocelot, int port, u64 *data) 1307 { 1308 int i; 1309 1310 /* check and update now */ 1311 ocelot_update_stats(ocelot); 1312 1313 /* Copy all counters */ 1314 for (i = 0; i < ocelot->num_stats; i++) 1315 *data++ = ocelot->stats[port * ocelot->num_stats + i]; 1316 } 1317 EXPORT_SYMBOL(ocelot_get_ethtool_stats); 1318 1319 static void ocelot_port_get_ethtool_stats(struct net_device *dev, 1320 struct ethtool_stats *stats, 1321 u64 *data) 1322 { 1323 struct ocelot_port_private *priv = netdev_priv(dev); 1324 struct ocelot *ocelot = priv->port.ocelot; 1325 int port = priv->chip_port; 1326 1327 ocelot_get_ethtool_stats(ocelot, port, data); 1328 } 1329 1330 int ocelot_get_sset_count(struct ocelot *ocelot, int port, int sset) 1331 { 1332 if (sset != ETH_SS_STATS) 1333 return -EOPNOTSUPP; 1334 1335 return ocelot->num_stats; 1336 } 1337 EXPORT_SYMBOL(ocelot_get_sset_count); 1338 1339 static int ocelot_port_get_sset_count(struct net_device *dev, int sset) 1340 { 1341 struct ocelot_port_private *priv = netdev_priv(dev); 1342 struct ocelot *ocelot = priv->port.ocelot; 1343 int port = priv->chip_port; 1344 1345 return ocelot_get_sset_count(ocelot, port, sset); 1346 } 1347 1348 int ocelot_get_ts_info(struct ocelot *ocelot, int port, 1349 struct ethtool_ts_info *info) 1350 { 1351 info->phc_index = ocelot->ptp_clock ? 1352 ptp_clock_index(ocelot->ptp_clock) : -1; 1353 info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE | 1354 SOF_TIMESTAMPING_RX_SOFTWARE | 1355 SOF_TIMESTAMPING_SOFTWARE | 1356 SOF_TIMESTAMPING_TX_HARDWARE | 1357 SOF_TIMESTAMPING_RX_HARDWARE | 1358 SOF_TIMESTAMPING_RAW_HARDWARE; 1359 info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON) | 1360 BIT(HWTSTAMP_TX_ONESTEP_SYNC); 1361 info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | BIT(HWTSTAMP_FILTER_ALL); 1362 1363 return 0; 1364 } 1365 EXPORT_SYMBOL(ocelot_get_ts_info); 1366 1367 static int ocelot_port_get_ts_info(struct net_device *dev, 1368 struct ethtool_ts_info *info) 1369 { 1370 struct ocelot_port_private *priv = netdev_priv(dev); 1371 struct ocelot *ocelot = priv->port.ocelot; 1372 int port = priv->chip_port; 1373 1374 if (!ocelot->ptp) 1375 return ethtool_op_get_ts_info(dev, info); 1376 1377 return ocelot_get_ts_info(ocelot, port, info); 1378 } 1379 1380 static const struct ethtool_ops ocelot_ethtool_ops = { 1381 .get_strings = ocelot_port_get_strings, 1382 .get_ethtool_stats = ocelot_port_get_ethtool_stats, 1383 .get_sset_count = ocelot_port_get_sset_count, 1384 .get_link_ksettings = phy_ethtool_get_link_ksettings, 1385 .set_link_ksettings = phy_ethtool_set_link_ksettings, 1386 .get_ts_info = ocelot_port_get_ts_info, 1387 }; 1388 1389 void ocelot_bridge_stp_state_set(struct ocelot *ocelot, int port, u8 state) 1390 { 1391 u32 port_cfg; 1392 int p, i; 1393 1394 if (!(BIT(port) & ocelot->bridge_mask)) 1395 return; 1396 1397 port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG, port); 1398 1399 switch (state) { 1400 case BR_STATE_FORWARDING: 1401 ocelot->bridge_fwd_mask |= BIT(port); 1402 /* Fallthrough */ 1403 case BR_STATE_LEARNING: 1404 port_cfg |= ANA_PORT_PORT_CFG_LEARN_ENA; 1405 break; 1406 1407 default: 1408 port_cfg &= ~ANA_PORT_PORT_CFG_LEARN_ENA; 1409 ocelot->bridge_fwd_mask &= ~BIT(port); 1410 break; 1411 } 1412 1413 ocelot_write_gix(ocelot, port_cfg, ANA_PORT_PORT_CFG, port); 1414 1415 /* Apply FWD mask. The loop is needed to add/remove the current port as 1416 * a source for the other ports. 1417 */ 1418 for (p = 0; p < ocelot->num_phys_ports; p++) { 1419 if (ocelot->bridge_fwd_mask & BIT(p)) { 1420 unsigned long mask = ocelot->bridge_fwd_mask & ~BIT(p); 1421 1422 for (i = 0; i < ocelot->num_phys_ports; i++) { 1423 unsigned long bond_mask = ocelot->lags[i]; 1424 1425 if (!bond_mask) 1426 continue; 1427 1428 if (bond_mask & BIT(p)) { 1429 mask &= ~bond_mask; 1430 break; 1431 } 1432 } 1433 1434 ocelot_write_rix(ocelot, mask, 1435 ANA_PGID_PGID, PGID_SRC + p); 1436 } else { 1437 ocelot_write_rix(ocelot, 0, 1438 ANA_PGID_PGID, PGID_SRC + p); 1439 } 1440 } 1441 } 1442 EXPORT_SYMBOL(ocelot_bridge_stp_state_set); 1443 1444 static void ocelot_port_attr_stp_state_set(struct ocelot *ocelot, int port, 1445 struct switchdev_trans *trans, 1446 u8 state) 1447 { 1448 if (switchdev_trans_ph_prepare(trans)) 1449 return; 1450 1451 ocelot_bridge_stp_state_set(ocelot, port, state); 1452 } 1453 1454 void ocelot_set_ageing_time(struct ocelot *ocelot, unsigned int msecs) 1455 { 1456 ocelot_write(ocelot, ANA_AUTOAGE_AGE_PERIOD(msecs / 2), 1457 ANA_AUTOAGE); 1458 } 1459 EXPORT_SYMBOL(ocelot_set_ageing_time); 1460 1461 static void ocelot_port_attr_ageing_set(struct ocelot *ocelot, int port, 1462 unsigned long ageing_clock_t) 1463 { 1464 unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t); 1465 u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000; 1466 1467 ocelot_set_ageing_time(ocelot, ageing_time); 1468 } 1469 1470 static void ocelot_port_attr_mc_set(struct ocelot *ocelot, int port, bool mc) 1471 { 1472 u32 cpu_fwd_mcast = ANA_PORT_CPU_FWD_CFG_CPU_IGMP_REDIR_ENA | 1473 ANA_PORT_CPU_FWD_CFG_CPU_MLD_REDIR_ENA | 1474 ANA_PORT_CPU_FWD_CFG_CPU_IPMC_CTRL_COPY_ENA; 1475 u32 val = 0; 1476 1477 if (mc) 1478 val = cpu_fwd_mcast; 1479 1480 ocelot_rmw_gix(ocelot, val, cpu_fwd_mcast, 1481 ANA_PORT_CPU_FWD_CFG, port); 1482 } 1483 1484 static int ocelot_port_attr_set(struct net_device *dev, 1485 const struct switchdev_attr *attr, 1486 struct switchdev_trans *trans) 1487 { 1488 struct ocelot_port_private *priv = netdev_priv(dev); 1489 struct ocelot *ocelot = priv->port.ocelot; 1490 int port = priv->chip_port; 1491 int err = 0; 1492 1493 switch (attr->id) { 1494 case SWITCHDEV_ATTR_ID_PORT_STP_STATE: 1495 ocelot_port_attr_stp_state_set(ocelot, port, trans, 1496 attr->u.stp_state); 1497 break; 1498 case SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME: 1499 ocelot_port_attr_ageing_set(ocelot, port, attr->u.ageing_time); 1500 break; 1501 case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING: 1502 ocelot_port_vlan_filtering(ocelot, port, 1503 attr->u.vlan_filtering); 1504 break; 1505 case SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED: 1506 ocelot_port_attr_mc_set(ocelot, port, !attr->u.mc_disabled); 1507 break; 1508 default: 1509 err = -EOPNOTSUPP; 1510 break; 1511 } 1512 1513 return err; 1514 } 1515 1516 static int ocelot_port_obj_add_vlan(struct net_device *dev, 1517 const struct switchdev_obj_port_vlan *vlan, 1518 struct switchdev_trans *trans) 1519 { 1520 int ret; 1521 u16 vid; 1522 1523 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 1524 ret = ocelot_vlan_vid_add(dev, vid, 1525 vlan->flags & BRIDGE_VLAN_INFO_PVID, 1526 vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED); 1527 if (ret) 1528 return ret; 1529 } 1530 1531 return 0; 1532 } 1533 1534 static int ocelot_port_vlan_del_vlan(struct net_device *dev, 1535 const struct switchdev_obj_port_vlan *vlan) 1536 { 1537 int ret; 1538 u16 vid; 1539 1540 for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { 1541 ret = ocelot_vlan_vid_del(dev, vid); 1542 1543 if (ret) 1544 return ret; 1545 } 1546 1547 return 0; 1548 } 1549 1550 static struct ocelot_multicast *ocelot_multicast_get(struct ocelot *ocelot, 1551 const unsigned char *addr, 1552 u16 vid) 1553 { 1554 struct ocelot_multicast *mc; 1555 1556 list_for_each_entry(mc, &ocelot->multicast, list) { 1557 if (ether_addr_equal(mc->addr, addr) && mc->vid == vid) 1558 return mc; 1559 } 1560 1561 return NULL; 1562 } 1563 1564 static int ocelot_port_obj_add_mdb(struct net_device *dev, 1565 const struct switchdev_obj_port_mdb *mdb, 1566 struct switchdev_trans *trans) 1567 { 1568 struct ocelot_port_private *priv = netdev_priv(dev); 1569 struct ocelot_port *ocelot_port = &priv->port; 1570 struct ocelot *ocelot = ocelot_port->ocelot; 1571 unsigned char addr[ETH_ALEN]; 1572 struct ocelot_multicast *mc; 1573 int port = priv->chip_port; 1574 u16 vid = mdb->vid; 1575 bool new = false; 1576 1577 if (!vid) 1578 vid = ocelot_port->pvid; 1579 1580 mc = ocelot_multicast_get(ocelot, mdb->addr, vid); 1581 if (!mc) { 1582 mc = devm_kzalloc(ocelot->dev, sizeof(*mc), GFP_KERNEL); 1583 if (!mc) 1584 return -ENOMEM; 1585 1586 memcpy(mc->addr, mdb->addr, ETH_ALEN); 1587 mc->vid = vid; 1588 1589 list_add_tail(&mc->list, &ocelot->multicast); 1590 new = true; 1591 } 1592 1593 memcpy(addr, mc->addr, ETH_ALEN); 1594 addr[0] = 0; 1595 1596 if (!new) { 1597 addr[2] = mc->ports << 0; 1598 addr[1] = mc->ports << 8; 1599 ocelot_mact_forget(ocelot, addr, vid); 1600 } 1601 1602 mc->ports |= BIT(port); 1603 addr[2] = mc->ports << 0; 1604 addr[1] = mc->ports << 8; 1605 1606 return ocelot_mact_learn(ocelot, 0, addr, vid, ENTRYTYPE_MACv4); 1607 } 1608 1609 static int ocelot_port_obj_del_mdb(struct net_device *dev, 1610 const struct switchdev_obj_port_mdb *mdb) 1611 { 1612 struct ocelot_port_private *priv = netdev_priv(dev); 1613 struct ocelot_port *ocelot_port = &priv->port; 1614 struct ocelot *ocelot = ocelot_port->ocelot; 1615 unsigned char addr[ETH_ALEN]; 1616 struct ocelot_multicast *mc; 1617 int port = priv->chip_port; 1618 u16 vid = mdb->vid; 1619 1620 if (!vid) 1621 vid = ocelot_port->pvid; 1622 1623 mc = ocelot_multicast_get(ocelot, mdb->addr, vid); 1624 if (!mc) 1625 return -ENOENT; 1626 1627 memcpy(addr, mc->addr, ETH_ALEN); 1628 addr[2] = mc->ports << 0; 1629 addr[1] = mc->ports << 8; 1630 addr[0] = 0; 1631 ocelot_mact_forget(ocelot, addr, vid); 1632 1633 mc->ports &= ~BIT(port); 1634 if (!mc->ports) { 1635 list_del(&mc->list); 1636 devm_kfree(ocelot->dev, mc); 1637 return 0; 1638 } 1639 1640 addr[2] = mc->ports << 0; 1641 addr[1] = mc->ports << 8; 1642 1643 return ocelot_mact_learn(ocelot, 0, addr, vid, ENTRYTYPE_MACv4); 1644 } 1645 1646 static int ocelot_port_obj_add(struct net_device *dev, 1647 const struct switchdev_obj *obj, 1648 struct switchdev_trans *trans, 1649 struct netlink_ext_ack *extack) 1650 { 1651 int ret = 0; 1652 1653 switch (obj->id) { 1654 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1655 ret = ocelot_port_obj_add_vlan(dev, 1656 SWITCHDEV_OBJ_PORT_VLAN(obj), 1657 trans); 1658 break; 1659 case SWITCHDEV_OBJ_ID_PORT_MDB: 1660 ret = ocelot_port_obj_add_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj), 1661 trans); 1662 break; 1663 default: 1664 return -EOPNOTSUPP; 1665 } 1666 1667 return ret; 1668 } 1669 1670 static int ocelot_port_obj_del(struct net_device *dev, 1671 const struct switchdev_obj *obj) 1672 { 1673 int ret = 0; 1674 1675 switch (obj->id) { 1676 case SWITCHDEV_OBJ_ID_PORT_VLAN: 1677 ret = ocelot_port_vlan_del_vlan(dev, 1678 SWITCHDEV_OBJ_PORT_VLAN(obj)); 1679 break; 1680 case SWITCHDEV_OBJ_ID_PORT_MDB: 1681 ret = ocelot_port_obj_del_mdb(dev, SWITCHDEV_OBJ_PORT_MDB(obj)); 1682 break; 1683 default: 1684 return -EOPNOTSUPP; 1685 } 1686 1687 return ret; 1688 } 1689 1690 int ocelot_port_bridge_join(struct ocelot *ocelot, int port, 1691 struct net_device *bridge) 1692 { 1693 if (!ocelot->bridge_mask) { 1694 ocelot->hw_bridge_dev = bridge; 1695 } else { 1696 if (ocelot->hw_bridge_dev != bridge) 1697 /* This is adding the port to a second bridge, this is 1698 * unsupported */ 1699 return -ENODEV; 1700 } 1701 1702 ocelot->bridge_mask |= BIT(port); 1703 1704 return 0; 1705 } 1706 EXPORT_SYMBOL(ocelot_port_bridge_join); 1707 1708 int ocelot_port_bridge_leave(struct ocelot *ocelot, int port, 1709 struct net_device *bridge) 1710 { 1711 ocelot->bridge_mask &= ~BIT(port); 1712 1713 if (!ocelot->bridge_mask) 1714 ocelot->hw_bridge_dev = NULL; 1715 1716 ocelot_port_vlan_filtering(ocelot, port, 0); 1717 ocelot_port_set_pvid(ocelot, port, 0); 1718 return ocelot_port_set_native_vlan(ocelot, port, 0); 1719 } 1720 EXPORT_SYMBOL(ocelot_port_bridge_leave); 1721 1722 static void ocelot_set_aggr_pgids(struct ocelot *ocelot) 1723 { 1724 int i, port, lag; 1725 1726 /* Reset destination and aggregation PGIDS */ 1727 for (port = 0; port < ocelot->num_phys_ports; port++) 1728 ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port); 1729 1730 for (i = PGID_AGGR; i < PGID_SRC; i++) 1731 ocelot_write_rix(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0), 1732 ANA_PGID_PGID, i); 1733 1734 /* Now, set PGIDs for each LAG */ 1735 for (lag = 0; lag < ocelot->num_phys_ports; lag++) { 1736 unsigned long bond_mask; 1737 int aggr_count = 0; 1738 u8 aggr_idx[16]; 1739 1740 bond_mask = ocelot->lags[lag]; 1741 if (!bond_mask) 1742 continue; 1743 1744 for_each_set_bit(port, &bond_mask, ocelot->num_phys_ports) { 1745 // Destination mask 1746 ocelot_write_rix(ocelot, bond_mask, 1747 ANA_PGID_PGID, port); 1748 aggr_idx[aggr_count] = port; 1749 aggr_count++; 1750 } 1751 1752 for (i = PGID_AGGR; i < PGID_SRC; i++) { 1753 u32 ac; 1754 1755 ac = ocelot_read_rix(ocelot, ANA_PGID_PGID, i); 1756 ac &= ~bond_mask; 1757 ac |= BIT(aggr_idx[i % aggr_count]); 1758 ocelot_write_rix(ocelot, ac, ANA_PGID_PGID, i); 1759 } 1760 } 1761 } 1762 1763 static void ocelot_setup_lag(struct ocelot *ocelot, int lag) 1764 { 1765 unsigned long bond_mask = ocelot->lags[lag]; 1766 unsigned int p; 1767 1768 for_each_set_bit(p, &bond_mask, ocelot->num_phys_ports) { 1769 u32 port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG, p); 1770 1771 port_cfg &= ~ANA_PORT_PORT_CFG_PORTID_VAL_M; 1772 1773 /* Use lag port as logical port for port i */ 1774 ocelot_write_gix(ocelot, port_cfg | 1775 ANA_PORT_PORT_CFG_PORTID_VAL(lag), 1776 ANA_PORT_PORT_CFG, p); 1777 } 1778 } 1779 1780 static int ocelot_port_lag_join(struct ocelot *ocelot, int port, 1781 struct net_device *bond) 1782 { 1783 struct net_device *ndev; 1784 u32 bond_mask = 0; 1785 int lag, lp; 1786 1787 rcu_read_lock(); 1788 for_each_netdev_in_bond_rcu(bond, ndev) { 1789 struct ocelot_port_private *priv = netdev_priv(ndev); 1790 1791 bond_mask |= BIT(priv->chip_port); 1792 } 1793 rcu_read_unlock(); 1794 1795 lp = __ffs(bond_mask); 1796 1797 /* If the new port is the lowest one, use it as the logical port from 1798 * now on 1799 */ 1800 if (port == lp) { 1801 lag = port; 1802 ocelot->lags[port] = bond_mask; 1803 bond_mask &= ~BIT(port); 1804 if (bond_mask) { 1805 lp = __ffs(bond_mask); 1806 ocelot->lags[lp] = 0; 1807 } 1808 } else { 1809 lag = lp; 1810 ocelot->lags[lp] |= BIT(port); 1811 } 1812 1813 ocelot_setup_lag(ocelot, lag); 1814 ocelot_set_aggr_pgids(ocelot); 1815 1816 return 0; 1817 } 1818 1819 static void ocelot_port_lag_leave(struct ocelot *ocelot, int port, 1820 struct net_device *bond) 1821 { 1822 u32 port_cfg; 1823 int i; 1824 1825 /* Remove port from any lag */ 1826 for (i = 0; i < ocelot->num_phys_ports; i++) 1827 ocelot->lags[i] &= ~BIT(port); 1828 1829 /* if it was the logical port of the lag, move the lag config to the 1830 * next port 1831 */ 1832 if (ocelot->lags[port]) { 1833 int n = __ffs(ocelot->lags[port]); 1834 1835 ocelot->lags[n] = ocelot->lags[port]; 1836 ocelot->lags[port] = 0; 1837 1838 ocelot_setup_lag(ocelot, n); 1839 } 1840 1841 port_cfg = ocelot_read_gix(ocelot, ANA_PORT_PORT_CFG, port); 1842 port_cfg &= ~ANA_PORT_PORT_CFG_PORTID_VAL_M; 1843 ocelot_write_gix(ocelot, port_cfg | ANA_PORT_PORT_CFG_PORTID_VAL(port), 1844 ANA_PORT_PORT_CFG, port); 1845 1846 ocelot_set_aggr_pgids(ocelot); 1847 } 1848 1849 /* Checks if the net_device instance given to us originate from our driver. */ 1850 static bool ocelot_netdevice_dev_check(const struct net_device *dev) 1851 { 1852 return dev->netdev_ops == &ocelot_port_netdev_ops; 1853 } 1854 1855 static int ocelot_netdevice_port_event(struct net_device *dev, 1856 unsigned long event, 1857 struct netdev_notifier_changeupper_info *info) 1858 { 1859 struct ocelot_port_private *priv = netdev_priv(dev); 1860 struct ocelot_port *ocelot_port = &priv->port; 1861 struct ocelot *ocelot = ocelot_port->ocelot; 1862 int port = priv->chip_port; 1863 int err = 0; 1864 1865 switch (event) { 1866 case NETDEV_CHANGEUPPER: 1867 if (netif_is_bridge_master(info->upper_dev)) { 1868 if (info->linking) { 1869 err = ocelot_port_bridge_join(ocelot, port, 1870 info->upper_dev); 1871 } else { 1872 err = ocelot_port_bridge_leave(ocelot, port, 1873 info->upper_dev); 1874 } 1875 } 1876 if (netif_is_lag_master(info->upper_dev)) { 1877 if (info->linking) 1878 err = ocelot_port_lag_join(ocelot, port, 1879 info->upper_dev); 1880 else 1881 ocelot_port_lag_leave(ocelot, port, 1882 info->upper_dev); 1883 } 1884 break; 1885 default: 1886 break; 1887 } 1888 1889 return err; 1890 } 1891 1892 static int ocelot_netdevice_event(struct notifier_block *unused, 1893 unsigned long event, void *ptr) 1894 { 1895 struct netdev_notifier_changeupper_info *info = ptr; 1896 struct net_device *dev = netdev_notifier_info_to_dev(ptr); 1897 int ret = 0; 1898 1899 if (!ocelot_netdevice_dev_check(dev)) 1900 return 0; 1901 1902 if (event == NETDEV_PRECHANGEUPPER && 1903 netif_is_lag_master(info->upper_dev)) { 1904 struct netdev_lag_upper_info *lag_upper_info = info->upper_info; 1905 struct netlink_ext_ack *extack; 1906 1907 if (lag_upper_info && 1908 lag_upper_info->tx_type != NETDEV_LAG_TX_TYPE_HASH) { 1909 extack = netdev_notifier_info_to_extack(&info->info); 1910 NL_SET_ERR_MSG_MOD(extack, "LAG device using unsupported Tx type"); 1911 1912 ret = -EINVAL; 1913 goto notify; 1914 } 1915 } 1916 1917 if (netif_is_lag_master(dev)) { 1918 struct net_device *slave; 1919 struct list_head *iter; 1920 1921 netdev_for_each_lower_dev(dev, slave, iter) { 1922 ret = ocelot_netdevice_port_event(slave, event, info); 1923 if (ret) 1924 goto notify; 1925 } 1926 } else { 1927 ret = ocelot_netdevice_port_event(dev, event, info); 1928 } 1929 1930 notify: 1931 return notifier_from_errno(ret); 1932 } 1933 1934 struct notifier_block ocelot_netdevice_nb __read_mostly = { 1935 .notifier_call = ocelot_netdevice_event, 1936 }; 1937 EXPORT_SYMBOL(ocelot_netdevice_nb); 1938 1939 static int ocelot_switchdev_event(struct notifier_block *unused, 1940 unsigned long event, void *ptr) 1941 { 1942 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 1943 int err; 1944 1945 switch (event) { 1946 case SWITCHDEV_PORT_ATTR_SET: 1947 err = switchdev_handle_port_attr_set(dev, ptr, 1948 ocelot_netdevice_dev_check, 1949 ocelot_port_attr_set); 1950 return notifier_from_errno(err); 1951 } 1952 1953 return NOTIFY_DONE; 1954 } 1955 1956 struct notifier_block ocelot_switchdev_nb __read_mostly = { 1957 .notifier_call = ocelot_switchdev_event, 1958 }; 1959 EXPORT_SYMBOL(ocelot_switchdev_nb); 1960 1961 static int ocelot_switchdev_blocking_event(struct notifier_block *unused, 1962 unsigned long event, void *ptr) 1963 { 1964 struct net_device *dev = switchdev_notifier_info_to_dev(ptr); 1965 int err; 1966 1967 switch (event) { 1968 /* Blocking events. */ 1969 case SWITCHDEV_PORT_OBJ_ADD: 1970 err = switchdev_handle_port_obj_add(dev, ptr, 1971 ocelot_netdevice_dev_check, 1972 ocelot_port_obj_add); 1973 return notifier_from_errno(err); 1974 case SWITCHDEV_PORT_OBJ_DEL: 1975 err = switchdev_handle_port_obj_del(dev, ptr, 1976 ocelot_netdevice_dev_check, 1977 ocelot_port_obj_del); 1978 return notifier_from_errno(err); 1979 case SWITCHDEV_PORT_ATTR_SET: 1980 err = switchdev_handle_port_attr_set(dev, ptr, 1981 ocelot_netdevice_dev_check, 1982 ocelot_port_attr_set); 1983 return notifier_from_errno(err); 1984 } 1985 1986 return NOTIFY_DONE; 1987 } 1988 1989 struct notifier_block ocelot_switchdev_blocking_nb __read_mostly = { 1990 .notifier_call = ocelot_switchdev_blocking_event, 1991 }; 1992 EXPORT_SYMBOL(ocelot_switchdev_blocking_nb); 1993 1994 int ocelot_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts) 1995 { 1996 struct ocelot *ocelot = container_of(ptp, struct ocelot, ptp_info); 1997 unsigned long flags; 1998 time64_t s; 1999 u32 val; 2000 s64 ns; 2001 2002 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags); 2003 2004 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN); 2005 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM); 2006 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_SAVE); 2007 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN); 2008 2009 s = ocelot_read_rix(ocelot, PTP_PIN_TOD_SEC_MSB, TOD_ACC_PIN) & 0xffff; 2010 s <<= 32; 2011 s += ocelot_read_rix(ocelot, PTP_PIN_TOD_SEC_LSB, TOD_ACC_PIN); 2012 ns = ocelot_read_rix(ocelot, PTP_PIN_TOD_NSEC, TOD_ACC_PIN); 2013 2014 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags); 2015 2016 /* Deal with negative values */ 2017 if (ns >= 0x3ffffff0 && ns <= 0x3fffffff) { 2018 s--; 2019 ns &= 0xf; 2020 ns += 999999984; 2021 } 2022 2023 set_normalized_timespec64(ts, s, ns); 2024 return 0; 2025 } 2026 EXPORT_SYMBOL(ocelot_ptp_gettime64); 2027 2028 static int ocelot_ptp_settime64(struct ptp_clock_info *ptp, 2029 const struct timespec64 *ts) 2030 { 2031 struct ocelot *ocelot = container_of(ptp, struct ocelot, ptp_info); 2032 unsigned long flags; 2033 u32 val; 2034 2035 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags); 2036 2037 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN); 2038 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM); 2039 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_IDLE); 2040 2041 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN); 2042 2043 ocelot_write_rix(ocelot, lower_32_bits(ts->tv_sec), PTP_PIN_TOD_SEC_LSB, 2044 TOD_ACC_PIN); 2045 ocelot_write_rix(ocelot, upper_32_bits(ts->tv_sec), PTP_PIN_TOD_SEC_MSB, 2046 TOD_ACC_PIN); 2047 ocelot_write_rix(ocelot, ts->tv_nsec, PTP_PIN_TOD_NSEC, TOD_ACC_PIN); 2048 2049 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN); 2050 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM); 2051 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_LOAD); 2052 2053 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN); 2054 2055 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags); 2056 return 0; 2057 } 2058 2059 static int ocelot_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) 2060 { 2061 if (delta > -(NSEC_PER_SEC / 2) && delta < (NSEC_PER_SEC / 2)) { 2062 struct ocelot *ocelot = container_of(ptp, struct ocelot, ptp_info); 2063 unsigned long flags; 2064 u32 val; 2065 2066 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags); 2067 2068 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN); 2069 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM); 2070 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_IDLE); 2071 2072 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN); 2073 2074 ocelot_write_rix(ocelot, 0, PTP_PIN_TOD_SEC_LSB, TOD_ACC_PIN); 2075 ocelot_write_rix(ocelot, 0, PTP_PIN_TOD_SEC_MSB, TOD_ACC_PIN); 2076 ocelot_write_rix(ocelot, delta, PTP_PIN_TOD_NSEC, TOD_ACC_PIN); 2077 2078 val = ocelot_read_rix(ocelot, PTP_PIN_CFG, TOD_ACC_PIN); 2079 val &= ~(PTP_PIN_CFG_SYNC | PTP_PIN_CFG_ACTION_MASK | PTP_PIN_CFG_DOM); 2080 val |= PTP_PIN_CFG_ACTION(PTP_PIN_ACTION_DELTA); 2081 2082 ocelot_write_rix(ocelot, val, PTP_PIN_CFG, TOD_ACC_PIN); 2083 2084 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags); 2085 } else { 2086 /* Fall back using ocelot_ptp_settime64 which is not exact. */ 2087 struct timespec64 ts; 2088 u64 now; 2089 2090 ocelot_ptp_gettime64(ptp, &ts); 2091 2092 now = ktime_to_ns(timespec64_to_ktime(ts)); 2093 ts = ns_to_timespec64(now + delta); 2094 2095 ocelot_ptp_settime64(ptp, &ts); 2096 } 2097 return 0; 2098 } 2099 2100 static int ocelot_ptp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm) 2101 { 2102 struct ocelot *ocelot = container_of(ptp, struct ocelot, ptp_info); 2103 u32 unit = 0, direction = 0; 2104 unsigned long flags; 2105 u64 adj = 0; 2106 2107 spin_lock_irqsave(&ocelot->ptp_clock_lock, flags); 2108 2109 if (!scaled_ppm) 2110 goto disable_adj; 2111 2112 if (scaled_ppm < 0) { 2113 direction = PTP_CFG_CLK_ADJ_CFG_DIR; 2114 scaled_ppm = -scaled_ppm; 2115 } 2116 2117 adj = PSEC_PER_SEC << 16; 2118 do_div(adj, scaled_ppm); 2119 do_div(adj, 1000); 2120 2121 /* If the adjustment value is too large, use ns instead */ 2122 if (adj >= (1L << 30)) { 2123 unit = PTP_CFG_CLK_ADJ_FREQ_NS; 2124 do_div(adj, 1000); 2125 } 2126 2127 /* Still too big */ 2128 if (adj >= (1L << 30)) 2129 goto disable_adj; 2130 2131 ocelot_write(ocelot, unit | adj, PTP_CLK_CFG_ADJ_FREQ); 2132 ocelot_write(ocelot, PTP_CFG_CLK_ADJ_CFG_ENA | direction, 2133 PTP_CLK_CFG_ADJ_CFG); 2134 2135 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags); 2136 return 0; 2137 2138 disable_adj: 2139 ocelot_write(ocelot, 0, PTP_CLK_CFG_ADJ_CFG); 2140 2141 spin_unlock_irqrestore(&ocelot->ptp_clock_lock, flags); 2142 return 0; 2143 } 2144 2145 static struct ptp_clock_info ocelot_ptp_clock_info = { 2146 .owner = THIS_MODULE, 2147 .name = "ocelot ptp", 2148 .max_adj = 0x7fffffff, 2149 .n_alarm = 0, 2150 .n_ext_ts = 0, 2151 .n_per_out = 0, 2152 .n_pins = 0, 2153 .pps = 0, 2154 .gettime64 = ocelot_ptp_gettime64, 2155 .settime64 = ocelot_ptp_settime64, 2156 .adjtime = ocelot_ptp_adjtime, 2157 .adjfine = ocelot_ptp_adjfine, 2158 }; 2159 2160 static int ocelot_init_timestamp(struct ocelot *ocelot) 2161 { 2162 struct ptp_clock *ptp_clock; 2163 2164 ocelot->ptp_info = ocelot_ptp_clock_info; 2165 ptp_clock = ptp_clock_register(&ocelot->ptp_info, ocelot->dev); 2166 if (IS_ERR(ptp_clock)) 2167 return PTR_ERR(ptp_clock); 2168 /* Check if PHC support is missing at the configuration level */ 2169 if (!ptp_clock) 2170 return 0; 2171 2172 ocelot->ptp_clock = ptp_clock; 2173 2174 ocelot_write(ocelot, SYS_PTP_CFG_PTP_STAMP_WID(30), SYS_PTP_CFG); 2175 ocelot_write(ocelot, 0xffffffff, ANA_TABLES_PTP_ID_LOW); 2176 ocelot_write(ocelot, 0xffffffff, ANA_TABLES_PTP_ID_HIGH); 2177 2178 ocelot_write(ocelot, PTP_CFG_MISC_PTP_EN, PTP_CFG_MISC); 2179 2180 /* There is no device reconfiguration, PTP Rx stamping is always 2181 * enabled. 2182 */ 2183 ocelot->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; 2184 2185 return 0; 2186 } 2187 2188 /* Configure the maximum SDU (L2 payload) on RX to the value specified in @sdu. 2189 * The length of VLAN tags is accounted for automatically via DEV_MAC_TAGS_CFG. 2190 * In the special case that it's the NPI port that we're configuring, the 2191 * length of the tag and optional prefix needs to be accounted for privately, 2192 * in order to be able to sustain communication at the requested @sdu. 2193 */ 2194 void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu) 2195 { 2196 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2197 int maxlen = sdu + ETH_HLEN + ETH_FCS_LEN; 2198 int atop_wm; 2199 2200 if (port == ocelot->npi) { 2201 maxlen += OCELOT_TAG_LEN; 2202 2203 if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_SHORT) 2204 maxlen += OCELOT_SHORT_PREFIX_LEN; 2205 else if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_LONG) 2206 maxlen += OCELOT_LONG_PREFIX_LEN; 2207 } 2208 2209 ocelot_port_writel(ocelot_port, maxlen, DEV_MAC_MAXLEN_CFG); 2210 2211 /* Set Pause WM hysteresis 2212 * 152 = 6 * maxlen / OCELOT_BUFFER_CELL_SZ 2213 * 101 = 4 * maxlen / OCELOT_BUFFER_CELL_SZ 2214 */ 2215 ocelot_write_rix(ocelot, SYS_PAUSE_CFG_PAUSE_ENA | 2216 SYS_PAUSE_CFG_PAUSE_STOP(101) | 2217 SYS_PAUSE_CFG_PAUSE_START(152), SYS_PAUSE_CFG, port); 2218 2219 /* Tail dropping watermark */ 2220 atop_wm = (ocelot->shared_queue_sz - 9 * maxlen) / 2221 OCELOT_BUFFER_CELL_SZ; 2222 ocelot_write_rix(ocelot, ocelot_wm_enc(9 * maxlen), 2223 SYS_ATOP, port); 2224 ocelot_write(ocelot, ocelot_wm_enc(atop_wm), SYS_ATOP_TOT_CFG); 2225 } 2226 EXPORT_SYMBOL(ocelot_port_set_maxlen); 2227 2228 int ocelot_get_max_mtu(struct ocelot *ocelot, int port) 2229 { 2230 int max_mtu = 65535 - ETH_HLEN - ETH_FCS_LEN; 2231 2232 if (port == ocelot->npi) { 2233 max_mtu -= OCELOT_TAG_LEN; 2234 2235 if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_SHORT) 2236 max_mtu -= OCELOT_SHORT_PREFIX_LEN; 2237 else if (ocelot->inj_prefix == OCELOT_TAG_PREFIX_LONG) 2238 max_mtu -= OCELOT_LONG_PREFIX_LEN; 2239 } 2240 2241 return max_mtu; 2242 } 2243 EXPORT_SYMBOL(ocelot_get_max_mtu); 2244 2245 void ocelot_init_port(struct ocelot *ocelot, int port) 2246 { 2247 struct ocelot_port *ocelot_port = ocelot->ports[port]; 2248 2249 skb_queue_head_init(&ocelot_port->tx_skbs); 2250 2251 /* Basic L2 initialization */ 2252 2253 /* Set MAC IFG Gaps 2254 * FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 0 2255 * !FDX: TX_IFG = 5, RX_IFG1 = RX_IFG2 = 5 2256 */ 2257 ocelot_port_writel(ocelot_port, DEV_MAC_IFG_CFG_TX_IFG(5), 2258 DEV_MAC_IFG_CFG); 2259 2260 /* Load seed (0) and set MAC HDX late collision */ 2261 ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67) | 2262 DEV_MAC_HDX_CFG_SEED_LOAD, 2263 DEV_MAC_HDX_CFG); 2264 mdelay(1); 2265 ocelot_port_writel(ocelot_port, DEV_MAC_HDX_CFG_LATE_COL_POS(67), 2266 DEV_MAC_HDX_CFG); 2267 2268 /* Set Max Length and maximum tags allowed */ 2269 ocelot_port_set_maxlen(ocelot, port, ETH_DATA_LEN); 2270 ocelot_port_writel(ocelot_port, DEV_MAC_TAGS_CFG_TAG_ID(ETH_P_8021AD) | 2271 DEV_MAC_TAGS_CFG_VLAN_AWR_ENA | 2272 DEV_MAC_TAGS_CFG_VLAN_DBL_AWR_ENA | 2273 DEV_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA, 2274 DEV_MAC_TAGS_CFG); 2275 2276 /* Set SMAC of Pause frame (00:00:00:00:00:00) */ 2277 ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_HIGH_CFG); 2278 ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_LOW_CFG); 2279 2280 /* Drop frames with multicast source address */ 2281 ocelot_rmw_gix(ocelot, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA, 2282 ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA, 2283 ANA_PORT_DROP_CFG, port); 2284 2285 /* Set default VLAN and tag type to 8021Q. */ 2286 ocelot_rmw_gix(ocelot, REW_PORT_VLAN_CFG_PORT_TPID(ETH_P_8021Q), 2287 REW_PORT_VLAN_CFG_PORT_TPID_M, 2288 REW_PORT_VLAN_CFG, port); 2289 2290 /* Enable vcap lookups */ 2291 ocelot_vcap_enable(ocelot, port); 2292 } 2293 EXPORT_SYMBOL(ocelot_init_port); 2294 2295 int ocelot_probe_port(struct ocelot *ocelot, u8 port, 2296 void __iomem *regs, 2297 struct phy_device *phy) 2298 { 2299 struct ocelot_port_private *priv; 2300 struct ocelot_port *ocelot_port; 2301 struct net_device *dev; 2302 int err; 2303 2304 dev = alloc_etherdev(sizeof(struct ocelot_port_private)); 2305 if (!dev) 2306 return -ENOMEM; 2307 SET_NETDEV_DEV(dev, ocelot->dev); 2308 priv = netdev_priv(dev); 2309 priv->dev = dev; 2310 priv->phy = phy; 2311 priv->chip_port = port; 2312 ocelot_port = &priv->port; 2313 ocelot_port->ocelot = ocelot; 2314 ocelot_port->regs = regs; 2315 ocelot->ports[port] = ocelot_port; 2316 2317 dev->netdev_ops = &ocelot_port_netdev_ops; 2318 dev->ethtool_ops = &ocelot_ethtool_ops; 2319 2320 dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXFCS | 2321 NETIF_F_HW_TC; 2322 dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_TC; 2323 2324 memcpy(dev->dev_addr, ocelot->base_mac, ETH_ALEN); 2325 dev->dev_addr[ETH_ALEN - 1] += port; 2326 ocelot_mact_learn(ocelot, PGID_CPU, dev->dev_addr, ocelot_port->pvid, 2327 ENTRYTYPE_LOCKED); 2328 2329 ocelot_init_port(ocelot, port); 2330 2331 err = register_netdev(dev); 2332 if (err) { 2333 dev_err(ocelot->dev, "register_netdev failed\n"); 2334 free_netdev(dev); 2335 } 2336 2337 return err; 2338 } 2339 EXPORT_SYMBOL(ocelot_probe_port); 2340 2341 /* Configure and enable the CPU port module, which is a set of queues. 2342 * If @npi contains a valid port index, the CPU port module is connected 2343 * to the Node Processor Interface (NPI). This is the mode through which 2344 * frames can be injected from and extracted to an external CPU, 2345 * over Ethernet. 2346 */ 2347 void ocelot_configure_cpu(struct ocelot *ocelot, int npi, 2348 enum ocelot_tag_prefix injection, 2349 enum ocelot_tag_prefix extraction) 2350 { 2351 int cpu = ocelot->num_phys_ports; 2352 2353 ocelot->npi = npi; 2354 ocelot->inj_prefix = injection; 2355 ocelot->xtr_prefix = extraction; 2356 2357 /* The unicast destination PGID for the CPU port module is unused */ 2358 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, cpu); 2359 /* Instead set up a multicast destination PGID for traffic copied to 2360 * the CPU. Whitelisted MAC addresses like the port netdevice MAC 2361 * addresses will be copied to the CPU via this PGID. 2362 */ 2363 ocelot_write_rix(ocelot, BIT(cpu), ANA_PGID_PGID, PGID_CPU); 2364 ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_RECV_ENA | 2365 ANA_PORT_PORT_CFG_PORTID_VAL(cpu), 2366 ANA_PORT_PORT_CFG, cpu); 2367 2368 if (npi >= 0 && npi < ocelot->num_phys_ports) { 2369 ocelot_write(ocelot, QSYS_EXT_CPU_CFG_EXT_CPUQ_MSK_M | 2370 QSYS_EXT_CPU_CFG_EXT_CPU_PORT(npi), 2371 QSYS_EXT_CPU_CFG); 2372 2373 /* Enable NPI port */ 2374 ocelot_write_rix(ocelot, 2375 QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE | 2376 QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) | 2377 QSYS_SWITCH_PORT_MODE_PORT_ENA, 2378 QSYS_SWITCH_PORT_MODE, npi); 2379 /* NPI port Injection/Extraction configuration */ 2380 ocelot_write_rix(ocelot, 2381 SYS_PORT_MODE_INCL_XTR_HDR(extraction) | 2382 SYS_PORT_MODE_INCL_INJ_HDR(injection), 2383 SYS_PORT_MODE, npi); 2384 } 2385 2386 /* Enable CPU port module */ 2387 ocelot_write_rix(ocelot, QSYS_SWITCH_PORT_MODE_INGRESS_DROP_MODE | 2388 QSYS_SWITCH_PORT_MODE_SCH_NEXT_CFG(1) | 2389 QSYS_SWITCH_PORT_MODE_PORT_ENA, 2390 QSYS_SWITCH_PORT_MODE, cpu); 2391 /* CPU port Injection/Extraction configuration */ 2392 ocelot_write_rix(ocelot, SYS_PORT_MODE_INCL_XTR_HDR(extraction) | 2393 SYS_PORT_MODE_INCL_INJ_HDR(injection), 2394 SYS_PORT_MODE, cpu); 2395 2396 /* Configure the CPU port to be VLAN aware */ 2397 ocelot_write_gix(ocelot, ANA_PORT_VLAN_CFG_VLAN_VID(0) | 2398 ANA_PORT_VLAN_CFG_VLAN_AWARE_ENA | 2399 ANA_PORT_VLAN_CFG_VLAN_POP_CNT(1), 2400 ANA_PORT_VLAN_CFG, cpu); 2401 } 2402 EXPORT_SYMBOL(ocelot_configure_cpu); 2403 2404 int ocelot_init(struct ocelot *ocelot) 2405 { 2406 char queue_name[32]; 2407 int i, ret; 2408 u32 port; 2409 2410 if (ocelot->ops->reset) { 2411 ret = ocelot->ops->reset(ocelot); 2412 if (ret) { 2413 dev_err(ocelot->dev, "Switch reset failed\n"); 2414 return ret; 2415 } 2416 } 2417 2418 ocelot->lags = devm_kcalloc(ocelot->dev, ocelot->num_phys_ports, 2419 sizeof(u32), GFP_KERNEL); 2420 if (!ocelot->lags) 2421 return -ENOMEM; 2422 2423 ocelot->stats = devm_kcalloc(ocelot->dev, 2424 ocelot->num_phys_ports * ocelot->num_stats, 2425 sizeof(u64), GFP_KERNEL); 2426 if (!ocelot->stats) 2427 return -ENOMEM; 2428 2429 mutex_init(&ocelot->stats_lock); 2430 mutex_init(&ocelot->ptp_lock); 2431 spin_lock_init(&ocelot->ptp_clock_lock); 2432 snprintf(queue_name, sizeof(queue_name), "%s-stats", 2433 dev_name(ocelot->dev)); 2434 ocelot->stats_queue = create_singlethread_workqueue(queue_name); 2435 if (!ocelot->stats_queue) 2436 return -ENOMEM; 2437 2438 INIT_LIST_HEAD(&ocelot->multicast); 2439 ocelot_mact_init(ocelot); 2440 ocelot_vlan_init(ocelot); 2441 ocelot_ace_init(ocelot); 2442 2443 for (port = 0; port < ocelot->num_phys_ports; port++) { 2444 /* Clear all counters (5 groups) */ 2445 ocelot_write(ocelot, SYS_STAT_CFG_STAT_VIEW(port) | 2446 SYS_STAT_CFG_STAT_CLEAR_SHOT(0x7f), 2447 SYS_STAT_CFG); 2448 } 2449 2450 /* Only use S-Tag */ 2451 ocelot_write(ocelot, ETH_P_8021AD, SYS_VLAN_ETYPE_CFG); 2452 2453 /* Aggregation mode */ 2454 ocelot_write(ocelot, ANA_AGGR_CFG_AC_SMAC_ENA | 2455 ANA_AGGR_CFG_AC_DMAC_ENA | 2456 ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA | 2457 ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA, ANA_AGGR_CFG); 2458 2459 /* Set MAC age time to default value. The entry is aged after 2460 * 2*AGE_PERIOD 2461 */ 2462 ocelot_write(ocelot, 2463 ANA_AUTOAGE_AGE_PERIOD(BR_DEFAULT_AGEING_TIME / 2 / HZ), 2464 ANA_AUTOAGE); 2465 2466 /* Disable learning for frames discarded by VLAN ingress filtering */ 2467 regmap_field_write(ocelot->regfields[ANA_ADVLEARN_VLAN_CHK], 1); 2468 2469 /* Setup frame ageing - fixed value "2 sec" - in 6.5 us units */ 2470 ocelot_write(ocelot, SYS_FRM_AGING_AGE_TX_ENA | 2471 SYS_FRM_AGING_MAX_AGE(307692), SYS_FRM_AGING); 2472 2473 /* Setup flooding PGIDs */ 2474 ocelot_write_rix(ocelot, ANA_FLOODING_FLD_MULTICAST(PGID_MC) | 2475 ANA_FLOODING_FLD_BROADCAST(PGID_MC) | 2476 ANA_FLOODING_FLD_UNICAST(PGID_UC), 2477 ANA_FLOODING, 0); 2478 ocelot_write(ocelot, ANA_FLOODING_IPMC_FLD_MC6_DATA(PGID_MCIPV6) | 2479 ANA_FLOODING_IPMC_FLD_MC6_CTRL(PGID_MC) | 2480 ANA_FLOODING_IPMC_FLD_MC4_DATA(PGID_MCIPV4) | 2481 ANA_FLOODING_IPMC_FLD_MC4_CTRL(PGID_MC), 2482 ANA_FLOODING_IPMC); 2483 2484 for (port = 0; port < ocelot->num_phys_ports; port++) { 2485 /* Transmit the frame to the local port. */ 2486 ocelot_write_rix(ocelot, BIT(port), ANA_PGID_PGID, port); 2487 /* Do not forward BPDU frames to the front ports. */ 2488 ocelot_write_gix(ocelot, 2489 ANA_PORT_CPU_FWD_BPDU_CFG_BPDU_REDIR_ENA(0xffff), 2490 ANA_PORT_CPU_FWD_BPDU_CFG, 2491 port); 2492 /* Ensure bridging is disabled */ 2493 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_SRC + port); 2494 } 2495 2496 /* Allow broadcast MAC frames. */ 2497 for (i = ocelot->num_phys_ports + 1; i < PGID_CPU; i++) { 2498 u32 val = ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports - 1, 0)); 2499 2500 ocelot_write_rix(ocelot, val, ANA_PGID_PGID, i); 2501 } 2502 ocelot_write_rix(ocelot, 2503 ANA_PGID_PGID_PGID(GENMASK(ocelot->num_phys_ports, 0)), 2504 ANA_PGID_PGID, PGID_MC); 2505 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV4); 2506 ocelot_write_rix(ocelot, 0, ANA_PGID_PGID, PGID_MCIPV6); 2507 2508 /* Allow manual injection via DEVCPU_QS registers, and byte swap these 2509 * registers endianness. 2510 */ 2511 ocelot_write_rix(ocelot, QS_INJ_GRP_CFG_BYTE_SWAP | 2512 QS_INJ_GRP_CFG_MODE(1), QS_INJ_GRP_CFG, 0); 2513 ocelot_write_rix(ocelot, QS_XTR_GRP_CFG_BYTE_SWAP | 2514 QS_XTR_GRP_CFG_MODE(1), QS_XTR_GRP_CFG, 0); 2515 ocelot_write(ocelot, ANA_CPUQ_CFG_CPUQ_MIRROR(2) | 2516 ANA_CPUQ_CFG_CPUQ_LRN(2) | 2517 ANA_CPUQ_CFG_CPUQ_MAC_COPY(2) | 2518 ANA_CPUQ_CFG_CPUQ_SRC_COPY(2) | 2519 ANA_CPUQ_CFG_CPUQ_LOCKED_PORTMOVE(2) | 2520 ANA_CPUQ_CFG_CPUQ_ALLBRIDGE(6) | 2521 ANA_CPUQ_CFG_CPUQ_IPMC_CTRL(6) | 2522 ANA_CPUQ_CFG_CPUQ_IGMP(6) | 2523 ANA_CPUQ_CFG_CPUQ_MLD(6), ANA_CPUQ_CFG); 2524 for (i = 0; i < 16; i++) 2525 ocelot_write_rix(ocelot, ANA_CPUQ_8021_CFG_CPUQ_GARP_VAL(6) | 2526 ANA_CPUQ_8021_CFG_CPUQ_BPDU_VAL(6), 2527 ANA_CPUQ_8021_CFG, i); 2528 2529 INIT_DELAYED_WORK(&ocelot->stats_work, ocelot_check_stats_work); 2530 queue_delayed_work(ocelot->stats_queue, &ocelot->stats_work, 2531 OCELOT_STATS_CHECK_DELAY); 2532 2533 if (ocelot->ptp) { 2534 ret = ocelot_init_timestamp(ocelot); 2535 if (ret) { 2536 dev_err(ocelot->dev, 2537 "Timestamp initialization failed\n"); 2538 return ret; 2539 } 2540 } 2541 2542 return 0; 2543 } 2544 EXPORT_SYMBOL(ocelot_init); 2545 2546 void ocelot_deinit(struct ocelot *ocelot) 2547 { 2548 struct ocelot_port *port; 2549 int i; 2550 2551 cancel_delayed_work(&ocelot->stats_work); 2552 destroy_workqueue(ocelot->stats_queue); 2553 mutex_destroy(&ocelot->stats_lock); 2554 if (ocelot->ptp_clock) 2555 ptp_clock_unregister(ocelot->ptp_clock); 2556 2557 for (i = 0; i < ocelot->num_phys_ports; i++) { 2558 port = ocelot->ports[i]; 2559 skb_queue_purge(&port->tx_skbs); 2560 } 2561 } 2562 EXPORT_SYMBOL(ocelot_deinit); 2563 2564 MODULE_LICENSE("Dual MIT/GPL"); 2565