1 /* 2 * Broadcom Starfighter 2 DSA switch driver 3 * 4 * Copyright (C) 2014, Broadcom Corporation 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 */ 11 12 #include <linux/list.h> 13 #include <linux/module.h> 14 #include <linux/netdevice.h> 15 #include <linux/interrupt.h> 16 #include <linux/platform_device.h> 17 #include <linux/of.h> 18 #include <linux/phy.h> 19 #include <linux/phy_fixed.h> 20 #include <linux/mii.h> 21 #include <linux/of.h> 22 #include <linux/of_irq.h> 23 #include <linux/of_address.h> 24 #include <linux/of_net.h> 25 #include <net/dsa.h> 26 #include <linux/ethtool.h> 27 #include <linux/if_bridge.h> 28 #include <linux/brcmphy.h> 29 #include <linux/etherdevice.h> 30 #include <net/switchdev.h> 31 32 #include "bcm_sf2.h" 33 #include "bcm_sf2_regs.h" 34 35 /* String, offset, and register size in bytes if different from 4 bytes */ 36 static const struct bcm_sf2_hw_stats bcm_sf2_mib[] = { 37 { "TxOctets", 0x000, 8 }, 38 { "TxDropPkts", 0x020 }, 39 { "TxQPKTQ0", 0x030 }, 40 { "TxBroadcastPkts", 0x040 }, 41 { "TxMulticastPkts", 0x050 }, 42 { "TxUnicastPKts", 0x060 }, 43 { "TxCollisions", 0x070 }, 44 { "TxSingleCollision", 0x080 }, 45 { "TxMultipleCollision", 0x090 }, 46 { "TxDeferredCollision", 0x0a0 }, 47 { "TxLateCollision", 0x0b0 }, 48 { "TxExcessiveCollision", 0x0c0 }, 49 { "TxFrameInDisc", 0x0d0 }, 50 { "TxPausePkts", 0x0e0 }, 51 { "TxQPKTQ1", 0x0f0 }, 52 { "TxQPKTQ2", 0x100 }, 53 { "TxQPKTQ3", 0x110 }, 54 { "TxQPKTQ4", 0x120 }, 55 { "TxQPKTQ5", 0x130 }, 56 { "RxOctets", 0x140, 8 }, 57 { "RxUndersizePkts", 0x160 }, 58 { "RxPausePkts", 0x170 }, 59 { "RxPkts64Octets", 0x180 }, 60 { "RxPkts65to127Octets", 0x190 }, 61 { "RxPkts128to255Octets", 0x1a0 }, 62 { "RxPkts256to511Octets", 0x1b0 }, 63 { "RxPkts512to1023Octets", 0x1c0 }, 64 { "RxPkts1024toMaxPktsOctets", 0x1d0 }, 65 { "RxOversizePkts", 0x1e0 }, 66 { "RxJabbers", 0x1f0 }, 67 { "RxAlignmentErrors", 0x200 }, 68 { "RxFCSErrors", 0x210 }, 69 { "RxGoodOctets", 0x220, 8 }, 70 { "RxDropPkts", 0x240 }, 71 { "RxUnicastPkts", 0x250 }, 72 { "RxMulticastPkts", 0x260 }, 73 { "RxBroadcastPkts", 0x270 }, 74 { "RxSAChanges", 0x280 }, 75 { "RxFragments", 0x290 }, 76 { "RxJumboPkt", 0x2a0 }, 77 { "RxSymblErr", 0x2b0 }, 78 { "InRangeErrCount", 0x2c0 }, 79 { "OutRangeErrCount", 0x2d0 }, 80 { "EEELpiEvent", 0x2e0 }, 81 { "EEELpiDuration", 0x2f0 }, 82 { "RxDiscard", 0x300, 8 }, 83 { "TxQPKTQ6", 0x320 }, 84 { "TxQPKTQ7", 0x330 }, 85 { "TxPkts64Octets", 0x340 }, 86 { "TxPkts65to127Octets", 0x350 }, 87 { "TxPkts128to255Octets", 0x360 }, 88 { "TxPkts256to511Ocets", 0x370 }, 89 { "TxPkts512to1023Ocets", 0x380 }, 90 { "TxPkts1024toMaxPktOcets", 0x390 }, 91 }; 92 93 #define BCM_SF2_STATS_SIZE ARRAY_SIZE(bcm_sf2_mib) 94 95 static void bcm_sf2_sw_get_strings(struct dsa_switch *ds, 96 int port, uint8_t *data) 97 { 98 unsigned int i; 99 100 for (i = 0; i < BCM_SF2_STATS_SIZE; i++) 101 memcpy(data + i * ETH_GSTRING_LEN, 102 bcm_sf2_mib[i].string, ETH_GSTRING_LEN); 103 } 104 105 static void bcm_sf2_sw_get_ethtool_stats(struct dsa_switch *ds, 106 int port, uint64_t *data) 107 { 108 struct bcm_sf2_priv *priv = ds_to_priv(ds); 109 const struct bcm_sf2_hw_stats *s; 110 unsigned int i; 111 u64 val = 0; 112 u32 offset; 113 114 mutex_lock(&priv->stats_mutex); 115 116 /* Now fetch the per-port counters */ 117 for (i = 0; i < BCM_SF2_STATS_SIZE; i++) { 118 s = &bcm_sf2_mib[i]; 119 120 /* Do a latched 64-bit read if needed */ 121 offset = s->reg + CORE_P_MIB_OFFSET(port); 122 if (s->sizeof_stat == 8) 123 val = core_readq(priv, offset); 124 else 125 val = core_readl(priv, offset); 126 127 data[i] = (u64)val; 128 } 129 130 mutex_unlock(&priv->stats_mutex); 131 } 132 133 static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds) 134 { 135 return BCM_SF2_STATS_SIZE; 136 } 137 138 static char *bcm_sf2_sw_probe(struct device *host_dev, int sw_addr) 139 { 140 return "Broadcom Starfighter 2"; 141 } 142 143 static void bcm_sf2_imp_vlan_setup(struct dsa_switch *ds, int cpu_port) 144 { 145 struct bcm_sf2_priv *priv = ds_to_priv(ds); 146 unsigned int i; 147 u32 reg; 148 149 /* Enable the IMP Port to be in the same VLAN as the other ports 150 * on a per-port basis such that we only have Port i and IMP in 151 * the same VLAN. 152 */ 153 for (i = 0; i < priv->hw_params.num_ports; i++) { 154 if (!((1 << i) & ds->phys_port_mask)) 155 continue; 156 157 reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i)); 158 reg |= (1 << cpu_port); 159 core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i)); 160 } 161 } 162 163 static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port) 164 { 165 struct bcm_sf2_priv *priv = ds_to_priv(ds); 166 u32 reg, val; 167 168 /* Enable the port memories */ 169 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL); 170 reg &= ~P_TXQ_PSM_VDD(port); 171 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL); 172 173 /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */ 174 reg = core_readl(priv, CORE_IMP_CTL); 175 reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN); 176 reg &= ~(RX_DIS | TX_DIS); 177 core_writel(priv, reg, CORE_IMP_CTL); 178 179 /* Enable forwarding */ 180 core_writel(priv, SW_FWDG_EN, CORE_SWMODE); 181 182 /* Enable IMP port in dumb mode */ 183 reg = core_readl(priv, CORE_SWITCH_CTRL); 184 reg |= MII_DUMB_FWDG_EN; 185 core_writel(priv, reg, CORE_SWITCH_CTRL); 186 187 /* Resolve which bit controls the Broadcom tag */ 188 switch (port) { 189 case 8: 190 val = BRCM_HDR_EN_P8; 191 break; 192 case 7: 193 val = BRCM_HDR_EN_P7; 194 break; 195 case 5: 196 val = BRCM_HDR_EN_P5; 197 break; 198 default: 199 val = 0; 200 break; 201 } 202 203 /* Enable Broadcom tags for IMP port */ 204 reg = core_readl(priv, CORE_BRCM_HDR_CTRL); 205 reg |= val; 206 core_writel(priv, reg, CORE_BRCM_HDR_CTRL); 207 208 /* Enable reception Broadcom tag for CPU TX (switch RX) to 209 * allow us to tag outgoing frames 210 */ 211 reg = core_readl(priv, CORE_BRCM_HDR_RX_DIS); 212 reg &= ~(1 << port); 213 core_writel(priv, reg, CORE_BRCM_HDR_RX_DIS); 214 215 /* Enable transmission of Broadcom tags from the switch (CPU RX) to 216 * allow delivering frames to the per-port net_devices 217 */ 218 reg = core_readl(priv, CORE_BRCM_HDR_TX_DIS); 219 reg &= ~(1 << port); 220 core_writel(priv, reg, CORE_BRCM_HDR_TX_DIS); 221 222 /* Force link status for IMP port */ 223 reg = core_readl(priv, CORE_STS_OVERRIDE_IMP); 224 reg |= (MII_SW_OR | LINK_STS); 225 core_writel(priv, reg, CORE_STS_OVERRIDE_IMP); 226 } 227 228 static void bcm_sf2_eee_enable_set(struct dsa_switch *ds, int port, bool enable) 229 { 230 struct bcm_sf2_priv *priv = ds_to_priv(ds); 231 u32 reg; 232 233 reg = core_readl(priv, CORE_EEE_EN_CTRL); 234 if (enable) 235 reg |= 1 << port; 236 else 237 reg &= ~(1 << port); 238 core_writel(priv, reg, CORE_EEE_EN_CTRL); 239 } 240 241 static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable) 242 { 243 struct bcm_sf2_priv *priv = ds_to_priv(ds); 244 u32 reg; 245 246 reg = reg_readl(priv, REG_SPHY_CNTRL); 247 if (enable) { 248 reg |= PHY_RESET; 249 reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | CK25_DIS); 250 reg_writel(priv, reg, REG_SPHY_CNTRL); 251 udelay(21); 252 reg = reg_readl(priv, REG_SPHY_CNTRL); 253 reg &= ~PHY_RESET; 254 } else { 255 reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET; 256 reg_writel(priv, reg, REG_SPHY_CNTRL); 257 mdelay(1); 258 reg |= CK25_DIS; 259 } 260 reg_writel(priv, reg, REG_SPHY_CNTRL); 261 262 /* Use PHY-driven LED signaling */ 263 if (!enable) { 264 reg = reg_readl(priv, REG_LED_CNTRL(0)); 265 reg |= SPDLNK_SRC_SEL; 266 reg_writel(priv, reg, REG_LED_CNTRL(0)); 267 } 268 } 269 270 static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv, 271 int port) 272 { 273 unsigned int off; 274 275 switch (port) { 276 case 7: 277 off = P7_IRQ_OFF; 278 break; 279 case 0: 280 /* Port 0 interrupts are located on the first bank */ 281 intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF)); 282 return; 283 default: 284 off = P_IRQ_OFF(port); 285 break; 286 } 287 288 intrl2_1_mask_clear(priv, P_IRQ_MASK(off)); 289 } 290 291 static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv, 292 int port) 293 { 294 unsigned int off; 295 296 switch (port) { 297 case 7: 298 off = P7_IRQ_OFF; 299 break; 300 case 0: 301 /* Port 0 interrupts are located on the first bank */ 302 intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF)); 303 intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR); 304 return; 305 default: 306 off = P_IRQ_OFF(port); 307 break; 308 } 309 310 intrl2_1_mask_set(priv, P_IRQ_MASK(off)); 311 intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR); 312 } 313 314 static int bcm_sf2_port_setup(struct dsa_switch *ds, int port, 315 struct phy_device *phy) 316 { 317 struct bcm_sf2_priv *priv = ds_to_priv(ds); 318 s8 cpu_port = ds->dst[ds->index].cpu_port; 319 u32 reg; 320 321 /* Clear the memory power down */ 322 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL); 323 reg &= ~P_TXQ_PSM_VDD(port); 324 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL); 325 326 /* Clear the Rx and Tx disable bits and set to no spanning tree */ 327 core_writel(priv, 0, CORE_G_PCTL_PORT(port)); 328 329 /* Re-enable the GPHY and re-apply workarounds */ 330 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) { 331 bcm_sf2_gphy_enable_set(ds, true); 332 if (phy) { 333 /* if phy_stop() has been called before, phy 334 * will be in halted state, and phy_start() 335 * will call resume. 336 * 337 * the resume path does not configure back 338 * autoneg settings, and since we hard reset 339 * the phy manually here, we need to reset the 340 * state machine also. 341 */ 342 phy->state = PHY_READY; 343 phy_init_hw(phy); 344 } 345 } 346 347 /* Enable MoCA port interrupts to get notified */ 348 if (port == priv->moca_port) 349 bcm_sf2_port_intr_enable(priv, port); 350 351 /* Set this port, and only this one to be in the default VLAN, 352 * if member of a bridge, restore its membership prior to 353 * bringing down this port. 354 */ 355 reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port)); 356 reg &= ~PORT_VLAN_CTRL_MASK; 357 reg |= (1 << port); 358 reg |= priv->port_sts[port].vlan_ctl_mask; 359 core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(port)); 360 361 bcm_sf2_imp_vlan_setup(ds, cpu_port); 362 363 /* If EEE was enabled, restore it */ 364 if (priv->port_sts[port].eee.eee_enabled) 365 bcm_sf2_eee_enable_set(ds, port, true); 366 367 return 0; 368 } 369 370 static void bcm_sf2_port_disable(struct dsa_switch *ds, int port, 371 struct phy_device *phy) 372 { 373 struct bcm_sf2_priv *priv = ds_to_priv(ds); 374 u32 off, reg; 375 376 if (priv->wol_ports_mask & (1 << port)) 377 return; 378 379 if (port == priv->moca_port) 380 bcm_sf2_port_intr_disable(priv, port); 381 382 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) 383 bcm_sf2_gphy_enable_set(ds, false); 384 385 if (dsa_is_cpu_port(ds, port)) 386 off = CORE_IMP_CTL; 387 else 388 off = CORE_G_PCTL_PORT(port); 389 390 reg = core_readl(priv, off); 391 reg |= RX_DIS | TX_DIS; 392 core_writel(priv, reg, off); 393 394 /* Power down the port memory */ 395 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL); 396 reg |= P_TXQ_PSM_VDD(port); 397 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL); 398 } 399 400 /* Returns 0 if EEE was not enabled, or 1 otherwise 401 */ 402 static int bcm_sf2_eee_init(struct dsa_switch *ds, int port, 403 struct phy_device *phy) 404 { 405 struct bcm_sf2_priv *priv = ds_to_priv(ds); 406 struct ethtool_eee *p = &priv->port_sts[port].eee; 407 int ret; 408 409 p->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_100baseT_Full); 410 411 ret = phy_init_eee(phy, 0); 412 if (ret) 413 return 0; 414 415 bcm_sf2_eee_enable_set(ds, port, true); 416 417 return 1; 418 } 419 420 static int bcm_sf2_sw_get_eee(struct dsa_switch *ds, int port, 421 struct ethtool_eee *e) 422 { 423 struct bcm_sf2_priv *priv = ds_to_priv(ds); 424 struct ethtool_eee *p = &priv->port_sts[port].eee; 425 u32 reg; 426 427 reg = core_readl(priv, CORE_EEE_LPI_INDICATE); 428 e->eee_enabled = p->eee_enabled; 429 e->eee_active = !!(reg & (1 << port)); 430 431 return 0; 432 } 433 434 static int bcm_sf2_sw_set_eee(struct dsa_switch *ds, int port, 435 struct phy_device *phydev, 436 struct ethtool_eee *e) 437 { 438 struct bcm_sf2_priv *priv = ds_to_priv(ds); 439 struct ethtool_eee *p = &priv->port_sts[port].eee; 440 441 p->eee_enabled = e->eee_enabled; 442 443 if (!p->eee_enabled) { 444 bcm_sf2_eee_enable_set(ds, port, false); 445 } else { 446 p->eee_enabled = bcm_sf2_eee_init(ds, port, phydev); 447 if (!p->eee_enabled) 448 return -EOPNOTSUPP; 449 } 450 451 return 0; 452 } 453 454 /* Fast-ageing of ARL entries for a given port, equivalent to an ARL 455 * flush for that port. 456 */ 457 static int bcm_sf2_sw_fast_age_port(struct dsa_switch *ds, int port) 458 { 459 struct bcm_sf2_priv *priv = ds_to_priv(ds); 460 unsigned int timeout = 1000; 461 u32 reg; 462 463 core_writel(priv, port, CORE_FAST_AGE_PORT); 464 465 reg = core_readl(priv, CORE_FAST_AGE_CTRL); 466 reg |= EN_AGE_PORT | EN_AGE_DYNAMIC | FAST_AGE_STR_DONE; 467 core_writel(priv, reg, CORE_FAST_AGE_CTRL); 468 469 do { 470 reg = core_readl(priv, CORE_FAST_AGE_CTRL); 471 if (!(reg & FAST_AGE_STR_DONE)) 472 break; 473 474 cpu_relax(); 475 } while (timeout--); 476 477 if (!timeout) 478 return -ETIMEDOUT; 479 480 core_writel(priv, 0, CORE_FAST_AGE_CTRL); 481 482 return 0; 483 } 484 485 static int bcm_sf2_sw_br_join(struct dsa_switch *ds, int port, 486 struct net_device *bridge) 487 { 488 struct bcm_sf2_priv *priv = ds_to_priv(ds); 489 unsigned int i; 490 u32 reg, p_ctl; 491 492 priv->port_sts[port].bridge_dev = bridge; 493 p_ctl = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port)); 494 495 for (i = 0; i < priv->hw_params.num_ports; i++) { 496 if (priv->port_sts[i].bridge_dev != bridge) 497 continue; 498 499 /* Add this local port to the remote port VLAN control 500 * membership and update the remote port bitmask 501 */ 502 reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i)); 503 reg |= 1 << port; 504 core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i)); 505 priv->port_sts[i].vlan_ctl_mask = reg; 506 507 p_ctl |= 1 << i; 508 } 509 510 /* Configure the local port VLAN control membership to include 511 * remote ports and update the local port bitmask 512 */ 513 core_writel(priv, p_ctl, CORE_PORT_VLAN_CTL_PORT(port)); 514 priv->port_sts[port].vlan_ctl_mask = p_ctl; 515 516 return 0; 517 } 518 519 static void bcm_sf2_sw_br_leave(struct dsa_switch *ds, int port) 520 { 521 struct bcm_sf2_priv *priv = ds_to_priv(ds); 522 struct net_device *bridge = priv->port_sts[port].bridge_dev; 523 unsigned int i; 524 u32 reg, p_ctl; 525 526 p_ctl = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port)); 527 528 for (i = 0; i < priv->hw_params.num_ports; i++) { 529 /* Don't touch the remaining ports */ 530 if (priv->port_sts[i].bridge_dev != bridge) 531 continue; 532 533 reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i)); 534 reg &= ~(1 << port); 535 core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i)); 536 priv->port_sts[port].vlan_ctl_mask = reg; 537 538 /* Prevent self removal to preserve isolation */ 539 if (port != i) 540 p_ctl &= ~(1 << i); 541 } 542 543 core_writel(priv, p_ctl, CORE_PORT_VLAN_CTL_PORT(port)); 544 priv->port_sts[port].vlan_ctl_mask = p_ctl; 545 priv->port_sts[port].bridge_dev = NULL; 546 } 547 548 static int bcm_sf2_sw_br_set_stp_state(struct dsa_switch *ds, int port, 549 u8 state) 550 { 551 struct bcm_sf2_priv *priv = ds_to_priv(ds); 552 u8 hw_state, cur_hw_state; 553 int ret = 0; 554 u32 reg; 555 556 reg = core_readl(priv, CORE_G_PCTL_PORT(port)); 557 cur_hw_state = reg & (G_MISTP_STATE_MASK << G_MISTP_STATE_SHIFT); 558 559 switch (state) { 560 case BR_STATE_DISABLED: 561 hw_state = G_MISTP_DIS_STATE; 562 break; 563 case BR_STATE_LISTENING: 564 hw_state = G_MISTP_LISTEN_STATE; 565 break; 566 case BR_STATE_LEARNING: 567 hw_state = G_MISTP_LEARN_STATE; 568 break; 569 case BR_STATE_FORWARDING: 570 hw_state = G_MISTP_FWD_STATE; 571 break; 572 case BR_STATE_BLOCKING: 573 hw_state = G_MISTP_BLOCK_STATE; 574 break; 575 default: 576 pr_err("%s: invalid STP state: %d\n", __func__, state); 577 return -EINVAL; 578 } 579 580 /* Fast-age ARL entries if we are moving a port from Learning or 581 * Forwarding (cur_hw_state) state to Disabled, Blocking or Listening 582 * state (hw_state) 583 */ 584 if (cur_hw_state != hw_state) { 585 if (cur_hw_state >= G_MISTP_LEARN_STATE && 586 hw_state <= G_MISTP_LISTEN_STATE) { 587 ret = bcm_sf2_sw_fast_age_port(ds, port); 588 if (ret) { 589 pr_err("%s: fast-ageing failed\n", __func__); 590 return ret; 591 } 592 } 593 } 594 595 reg = core_readl(priv, CORE_G_PCTL_PORT(port)); 596 reg &= ~(G_MISTP_STATE_MASK << G_MISTP_STATE_SHIFT); 597 reg |= hw_state; 598 core_writel(priv, reg, CORE_G_PCTL_PORT(port)); 599 600 return 0; 601 } 602 603 /* Address Resolution Logic routines */ 604 static int bcm_sf2_arl_op_wait(struct bcm_sf2_priv *priv) 605 { 606 unsigned int timeout = 10; 607 u32 reg; 608 609 do { 610 reg = core_readl(priv, CORE_ARLA_RWCTL); 611 if (!(reg & ARL_STRTDN)) 612 return 0; 613 614 usleep_range(1000, 2000); 615 } while (timeout--); 616 617 return -ETIMEDOUT; 618 } 619 620 static int bcm_sf2_arl_rw_op(struct bcm_sf2_priv *priv, unsigned int op) 621 { 622 u32 cmd; 623 624 if (op > ARL_RW) 625 return -EINVAL; 626 627 cmd = core_readl(priv, CORE_ARLA_RWCTL); 628 cmd &= ~IVL_SVL_SELECT; 629 cmd |= ARL_STRTDN; 630 if (op) 631 cmd |= ARL_RW; 632 else 633 cmd &= ~ARL_RW; 634 core_writel(priv, cmd, CORE_ARLA_RWCTL); 635 636 return bcm_sf2_arl_op_wait(priv); 637 } 638 639 static int bcm_sf2_arl_read(struct bcm_sf2_priv *priv, u64 mac, 640 u16 vid, struct bcm_sf2_arl_entry *ent, u8 *idx, 641 bool is_valid) 642 { 643 unsigned int i; 644 int ret; 645 646 ret = bcm_sf2_arl_op_wait(priv); 647 if (ret) 648 return ret; 649 650 /* Read the 4 bins */ 651 for (i = 0; i < 4; i++) { 652 u64 mac_vid; 653 u32 fwd_entry; 654 655 mac_vid = core_readq(priv, CORE_ARLA_MACVID_ENTRY(i)); 656 fwd_entry = core_readl(priv, CORE_ARLA_FWD_ENTRY(i)); 657 bcm_sf2_arl_to_entry(ent, mac_vid, fwd_entry); 658 659 if (ent->is_valid && is_valid) { 660 *idx = i; 661 return 0; 662 } 663 664 /* This is the MAC we just deleted */ 665 if (!is_valid && (mac_vid & mac)) 666 return 0; 667 } 668 669 return -ENOENT; 670 } 671 672 static int bcm_sf2_arl_op(struct bcm_sf2_priv *priv, int op, int port, 673 const unsigned char *addr, u16 vid, bool is_valid) 674 { 675 struct bcm_sf2_arl_entry ent; 676 u32 fwd_entry; 677 u64 mac, mac_vid = 0; 678 u8 idx = 0; 679 int ret; 680 681 /* Convert the array into a 64-bit MAC */ 682 mac = bcm_sf2_mac_to_u64(addr); 683 684 /* Perform a read for the given MAC and VID */ 685 core_writeq(priv, mac, CORE_ARLA_MAC); 686 core_writel(priv, vid, CORE_ARLA_VID); 687 688 /* Issue a read operation for this MAC */ 689 ret = bcm_sf2_arl_rw_op(priv, 1); 690 if (ret) 691 return ret; 692 693 ret = bcm_sf2_arl_read(priv, mac, vid, &ent, &idx, is_valid); 694 /* If this is a read, just finish now */ 695 if (op) 696 return ret; 697 698 /* We could not find a matching MAC, so reset to a new entry */ 699 if (ret) { 700 fwd_entry = 0; 701 idx = 0; 702 } 703 704 memset(&ent, 0, sizeof(ent)); 705 ent.port = port; 706 ent.is_valid = is_valid; 707 ent.vid = vid; 708 ent.is_static = true; 709 memcpy(ent.mac, addr, ETH_ALEN); 710 bcm_sf2_arl_from_entry(&mac_vid, &fwd_entry, &ent); 711 712 core_writeq(priv, mac_vid, CORE_ARLA_MACVID_ENTRY(idx)); 713 core_writel(priv, fwd_entry, CORE_ARLA_FWD_ENTRY(idx)); 714 715 ret = bcm_sf2_arl_rw_op(priv, 0); 716 if (ret) 717 return ret; 718 719 /* Re-read the entry to check */ 720 return bcm_sf2_arl_read(priv, mac, vid, &ent, &idx, is_valid); 721 } 722 723 static int bcm_sf2_sw_fdb_prepare(struct dsa_switch *ds, int port, 724 const struct switchdev_obj_port_fdb *fdb, 725 struct switchdev_trans *trans) 726 { 727 /* We do not need to do anything specific here yet */ 728 return 0; 729 } 730 731 static int bcm_sf2_sw_fdb_add(struct dsa_switch *ds, int port, 732 const struct switchdev_obj_port_fdb *fdb, 733 struct switchdev_trans *trans) 734 { 735 struct bcm_sf2_priv *priv = ds_to_priv(ds); 736 737 return bcm_sf2_arl_op(priv, 0, port, fdb->addr, fdb->vid, true); 738 } 739 740 static int bcm_sf2_sw_fdb_del(struct dsa_switch *ds, int port, 741 const struct switchdev_obj_port_fdb *fdb) 742 { 743 struct bcm_sf2_priv *priv = ds_to_priv(ds); 744 745 return bcm_sf2_arl_op(priv, 0, port, fdb->addr, fdb->vid, false); 746 } 747 748 static int bcm_sf2_arl_search_wait(struct bcm_sf2_priv *priv) 749 { 750 unsigned timeout = 1000; 751 u32 reg; 752 753 do { 754 reg = core_readl(priv, CORE_ARLA_SRCH_CTL); 755 if (!(reg & ARLA_SRCH_STDN)) 756 return 0; 757 758 if (reg & ARLA_SRCH_VLID) 759 return 0; 760 761 usleep_range(1000, 2000); 762 } while (timeout--); 763 764 return -ETIMEDOUT; 765 } 766 767 static void bcm_sf2_arl_search_rd(struct bcm_sf2_priv *priv, u8 idx, 768 struct bcm_sf2_arl_entry *ent) 769 { 770 u64 mac_vid; 771 u32 fwd_entry; 772 773 mac_vid = core_readq(priv, CORE_ARLA_SRCH_RSLT_MACVID(idx)); 774 fwd_entry = core_readl(priv, CORE_ARLA_SRCH_RSLT(idx)); 775 bcm_sf2_arl_to_entry(ent, mac_vid, fwd_entry); 776 } 777 778 static int bcm_sf2_sw_fdb_copy(struct net_device *dev, int port, 779 const struct bcm_sf2_arl_entry *ent, 780 struct switchdev_obj_port_fdb *fdb, 781 int (*cb)(struct switchdev_obj *obj)) 782 { 783 if (!ent->is_valid) 784 return 0; 785 786 if (port != ent->port) 787 return 0; 788 789 ether_addr_copy(fdb->addr, ent->mac); 790 fdb->vid = ent->vid; 791 fdb->ndm_state = ent->is_static ? NUD_NOARP : NUD_REACHABLE; 792 793 return cb(&fdb->obj); 794 } 795 796 static int bcm_sf2_sw_fdb_dump(struct dsa_switch *ds, int port, 797 struct switchdev_obj_port_fdb *fdb, 798 int (*cb)(struct switchdev_obj *obj)) 799 { 800 struct bcm_sf2_priv *priv = ds_to_priv(ds); 801 struct net_device *dev = ds->ports[port]; 802 struct bcm_sf2_arl_entry results[2]; 803 unsigned int count = 0; 804 int ret; 805 806 /* Start search operation */ 807 core_writel(priv, ARLA_SRCH_STDN, CORE_ARLA_SRCH_CTL); 808 809 do { 810 ret = bcm_sf2_arl_search_wait(priv); 811 if (ret) 812 return ret; 813 814 /* Read both entries, then return their values back */ 815 bcm_sf2_arl_search_rd(priv, 0, &results[0]); 816 ret = bcm_sf2_sw_fdb_copy(dev, port, &results[0], fdb, cb); 817 if (ret) 818 return ret; 819 820 bcm_sf2_arl_search_rd(priv, 1, &results[1]); 821 ret = bcm_sf2_sw_fdb_copy(dev, port, &results[1], fdb, cb); 822 if (ret) 823 return ret; 824 825 if (!results[0].is_valid && !results[1].is_valid) 826 break; 827 828 } while (count++ < CORE_ARLA_NUM_ENTRIES); 829 830 return 0; 831 } 832 833 static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id) 834 { 835 struct bcm_sf2_priv *priv = dev_id; 836 837 priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) & 838 ~priv->irq0_mask; 839 intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR); 840 841 return IRQ_HANDLED; 842 } 843 844 static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id) 845 { 846 struct bcm_sf2_priv *priv = dev_id; 847 848 priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) & 849 ~priv->irq1_mask; 850 intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR); 851 852 if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF)) 853 priv->port_sts[7].link = 1; 854 if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF)) 855 priv->port_sts[7].link = 0; 856 857 return IRQ_HANDLED; 858 } 859 860 static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv) 861 { 862 unsigned int timeout = 1000; 863 u32 reg; 864 865 reg = core_readl(priv, CORE_WATCHDOG_CTRL); 866 reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET; 867 core_writel(priv, reg, CORE_WATCHDOG_CTRL); 868 869 do { 870 reg = core_readl(priv, CORE_WATCHDOG_CTRL); 871 if (!(reg & SOFTWARE_RESET)) 872 break; 873 874 usleep_range(1000, 2000); 875 } while (timeout-- > 0); 876 877 if (timeout == 0) 878 return -ETIMEDOUT; 879 880 return 0; 881 } 882 883 static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv) 884 { 885 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET); 886 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR); 887 intrl2_0_writel(priv, 0, INTRL2_CPU_MASK_CLEAR); 888 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET); 889 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR); 890 intrl2_1_writel(priv, 0, INTRL2_CPU_MASK_CLEAR); 891 } 892 893 static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv, 894 struct device_node *dn) 895 { 896 struct device_node *port; 897 const char *phy_mode_str; 898 int mode; 899 unsigned int port_num; 900 int ret; 901 902 priv->moca_port = -1; 903 904 for_each_available_child_of_node(dn, port) { 905 if (of_property_read_u32(port, "reg", &port_num)) 906 continue; 907 908 /* Internal PHYs get assigned a specific 'phy-mode' property 909 * value: "internal" to help flag them before MDIO probing 910 * has completed, since they might be turned off at that 911 * time 912 */ 913 mode = of_get_phy_mode(port); 914 if (mode < 0) { 915 ret = of_property_read_string(port, "phy-mode", 916 &phy_mode_str); 917 if (ret < 0) 918 continue; 919 920 if (!strcasecmp(phy_mode_str, "internal")) 921 priv->int_phy_mask |= 1 << port_num; 922 } 923 924 if (mode == PHY_INTERFACE_MODE_MOCA) 925 priv->moca_port = port_num; 926 } 927 } 928 929 static int bcm_sf2_sw_setup(struct dsa_switch *ds) 930 { 931 const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME; 932 struct bcm_sf2_priv *priv = ds_to_priv(ds); 933 struct device_node *dn; 934 void __iomem **base; 935 unsigned int port; 936 unsigned int i; 937 u32 reg, rev; 938 int ret; 939 940 spin_lock_init(&priv->indir_lock); 941 mutex_init(&priv->stats_mutex); 942 943 /* All the interesting properties are at the parent device_node 944 * level 945 */ 946 dn = ds->pd->of_node->parent; 947 bcm_sf2_identify_ports(priv, ds->pd->of_node); 948 949 priv->irq0 = irq_of_parse_and_map(dn, 0); 950 priv->irq1 = irq_of_parse_and_map(dn, 1); 951 952 base = &priv->core; 953 for (i = 0; i < BCM_SF2_REGS_NUM; i++) { 954 *base = of_iomap(dn, i); 955 if (*base == NULL) { 956 pr_err("unable to find register: %s\n", reg_names[i]); 957 ret = -ENOMEM; 958 goto out_unmap; 959 } 960 base++; 961 } 962 963 ret = bcm_sf2_sw_rst(priv); 964 if (ret) { 965 pr_err("unable to software reset switch: %d\n", ret); 966 goto out_unmap; 967 } 968 969 /* Disable all interrupts and request them */ 970 bcm_sf2_intr_disable(priv); 971 972 ret = request_irq(priv->irq0, bcm_sf2_switch_0_isr, 0, 973 "switch_0", priv); 974 if (ret < 0) { 975 pr_err("failed to request switch_0 IRQ\n"); 976 goto out_unmap; 977 } 978 979 ret = request_irq(priv->irq1, bcm_sf2_switch_1_isr, 0, 980 "switch_1", priv); 981 if (ret < 0) { 982 pr_err("failed to request switch_1 IRQ\n"); 983 goto out_free_irq0; 984 } 985 986 /* Reset the MIB counters */ 987 reg = core_readl(priv, CORE_GMNCFGCFG); 988 reg |= RST_MIB_CNT; 989 core_writel(priv, reg, CORE_GMNCFGCFG); 990 reg &= ~RST_MIB_CNT; 991 core_writel(priv, reg, CORE_GMNCFGCFG); 992 993 /* Get the maximum number of ports for this switch */ 994 priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1; 995 if (priv->hw_params.num_ports > DSA_MAX_PORTS) 996 priv->hw_params.num_ports = DSA_MAX_PORTS; 997 998 /* Assume a single GPHY setup if we can't read that property */ 999 if (of_property_read_u32(dn, "brcm,num-gphy", 1000 &priv->hw_params.num_gphy)) 1001 priv->hw_params.num_gphy = 1; 1002 1003 /* Enable all valid ports and disable those unused */ 1004 for (port = 0; port < priv->hw_params.num_ports; port++) { 1005 /* IMP port receives special treatment */ 1006 if ((1 << port) & ds->phys_port_mask) 1007 bcm_sf2_port_setup(ds, port, NULL); 1008 else if (dsa_is_cpu_port(ds, port)) 1009 bcm_sf2_imp_setup(ds, port); 1010 else 1011 bcm_sf2_port_disable(ds, port, NULL); 1012 } 1013 1014 /* Include the pseudo-PHY address and the broadcast PHY address to 1015 * divert reads towards our workaround. This is only required for 1016 * 7445D0, since 7445E0 disconnects the internal switch pseudo-PHY such 1017 * that we can use the regular SWITCH_MDIO master controller instead. 1018 * 1019 * By default, DSA initializes ds->phys_mii_mask to ds->phys_port_mask 1020 * to have a 1:1 mapping between Port address and PHY address in order 1021 * to utilize the slave_mii_bus instance to read from Port PHYs. This is 1022 * not what we want here, so we initialize phys_mii_mask 0 to always 1023 * utilize the "master" MDIO bus backed by the "mdio-unimac" driver. 1024 */ 1025 if (of_machine_is_compatible("brcm,bcm7445d0")) 1026 ds->phys_mii_mask |= ((1 << BRCM_PSEUDO_PHY_ADDR) | (1 << 0)); 1027 else 1028 ds->phys_mii_mask = 0; 1029 1030 rev = reg_readl(priv, REG_SWITCH_REVISION); 1031 priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) & 1032 SWITCH_TOP_REV_MASK; 1033 priv->hw_params.core_rev = (rev & SF2_REV_MASK); 1034 1035 rev = reg_readl(priv, REG_PHY_REVISION); 1036 priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK; 1037 1038 pr_info("Starfighter 2 top: %x.%02x, core: %x.%02x base: 0x%p, IRQs: %d, %d\n", 1039 priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff, 1040 priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff, 1041 priv->core, priv->irq0, priv->irq1); 1042 1043 return 0; 1044 1045 out_free_irq0: 1046 free_irq(priv->irq0, priv); 1047 out_unmap: 1048 base = &priv->core; 1049 for (i = 0; i < BCM_SF2_REGS_NUM; i++) { 1050 if (*base) 1051 iounmap(*base); 1052 base++; 1053 } 1054 return ret; 1055 } 1056 1057 static int bcm_sf2_sw_set_addr(struct dsa_switch *ds, u8 *addr) 1058 { 1059 return 0; 1060 } 1061 1062 static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port) 1063 { 1064 struct bcm_sf2_priv *priv = ds_to_priv(ds); 1065 1066 /* The BCM7xxx PHY driver expects to find the integrated PHY revision 1067 * in bits 15:8 and the patch level in bits 7:0 which is exactly what 1068 * the REG_PHY_REVISION register layout is. 1069 */ 1070 1071 return priv->hw_params.gphy_rev; 1072 } 1073 1074 static int bcm_sf2_sw_indir_rw(struct dsa_switch *ds, int op, int addr, 1075 int regnum, u16 val) 1076 { 1077 struct bcm_sf2_priv *priv = ds_to_priv(ds); 1078 int ret = 0; 1079 u32 reg; 1080 1081 reg = reg_readl(priv, REG_SWITCH_CNTRL); 1082 reg |= MDIO_MASTER_SEL; 1083 reg_writel(priv, reg, REG_SWITCH_CNTRL); 1084 1085 /* Page << 8 | offset */ 1086 reg = 0x70; 1087 reg <<= 2; 1088 core_writel(priv, addr, reg); 1089 1090 /* Page << 8 | offset */ 1091 reg = 0x80 << 8 | regnum << 1; 1092 reg <<= 2; 1093 1094 if (op) 1095 ret = core_readl(priv, reg); 1096 else 1097 core_writel(priv, val, reg); 1098 1099 reg = reg_readl(priv, REG_SWITCH_CNTRL); 1100 reg &= ~MDIO_MASTER_SEL; 1101 reg_writel(priv, reg, REG_SWITCH_CNTRL); 1102 1103 return ret & 0xffff; 1104 } 1105 1106 static int bcm_sf2_sw_phy_read(struct dsa_switch *ds, int addr, int regnum) 1107 { 1108 /* Intercept reads from the MDIO broadcast address or Broadcom 1109 * pseudo-PHY address 1110 */ 1111 switch (addr) { 1112 case 0: 1113 case BRCM_PSEUDO_PHY_ADDR: 1114 return bcm_sf2_sw_indir_rw(ds, 1, addr, regnum, 0); 1115 default: 1116 return 0xffff; 1117 } 1118 } 1119 1120 static int bcm_sf2_sw_phy_write(struct dsa_switch *ds, int addr, int regnum, 1121 u16 val) 1122 { 1123 /* Intercept writes to the MDIO broadcast address or Broadcom 1124 * pseudo-PHY address 1125 */ 1126 switch (addr) { 1127 case 0: 1128 case BRCM_PSEUDO_PHY_ADDR: 1129 bcm_sf2_sw_indir_rw(ds, 0, addr, regnum, val); 1130 break; 1131 } 1132 1133 return 0; 1134 } 1135 1136 static void bcm_sf2_sw_adjust_link(struct dsa_switch *ds, int port, 1137 struct phy_device *phydev) 1138 { 1139 struct bcm_sf2_priv *priv = ds_to_priv(ds); 1140 u32 id_mode_dis = 0, port_mode; 1141 const char *str = NULL; 1142 u32 reg; 1143 1144 switch (phydev->interface) { 1145 case PHY_INTERFACE_MODE_RGMII: 1146 str = "RGMII (no delay)"; 1147 id_mode_dis = 1; 1148 case PHY_INTERFACE_MODE_RGMII_TXID: 1149 if (!str) 1150 str = "RGMII (TX delay)"; 1151 port_mode = EXT_GPHY; 1152 break; 1153 case PHY_INTERFACE_MODE_MII: 1154 str = "MII"; 1155 port_mode = EXT_EPHY; 1156 break; 1157 case PHY_INTERFACE_MODE_REVMII: 1158 str = "Reverse MII"; 1159 port_mode = EXT_REVMII; 1160 break; 1161 default: 1162 /* All other PHYs: internal and MoCA */ 1163 goto force_link; 1164 } 1165 1166 /* If the link is down, just disable the interface to conserve power */ 1167 if (!phydev->link) { 1168 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port)); 1169 reg &= ~RGMII_MODE_EN; 1170 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port)); 1171 goto force_link; 1172 } 1173 1174 /* Clear id_mode_dis bit, and the existing port mode, but 1175 * make sure we enable the RGMII block for data to pass 1176 */ 1177 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port)); 1178 reg &= ~ID_MODE_DIS; 1179 reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT); 1180 reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN); 1181 1182 reg |= port_mode | RGMII_MODE_EN; 1183 if (id_mode_dis) 1184 reg |= ID_MODE_DIS; 1185 1186 if (phydev->pause) { 1187 if (phydev->asym_pause) 1188 reg |= TX_PAUSE_EN; 1189 reg |= RX_PAUSE_EN; 1190 } 1191 1192 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port)); 1193 1194 pr_info("Port %d configured for %s\n", port, str); 1195 1196 force_link: 1197 /* Force link settings detected from the PHY */ 1198 reg = SW_OVERRIDE; 1199 switch (phydev->speed) { 1200 case SPEED_1000: 1201 reg |= SPDSTS_1000 << SPEED_SHIFT; 1202 break; 1203 case SPEED_100: 1204 reg |= SPDSTS_100 << SPEED_SHIFT; 1205 break; 1206 } 1207 1208 if (phydev->link) 1209 reg |= LINK_STS; 1210 if (phydev->duplex == DUPLEX_FULL) 1211 reg |= DUPLX_MODE; 1212 1213 core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port)); 1214 } 1215 1216 static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port, 1217 struct fixed_phy_status *status) 1218 { 1219 struct bcm_sf2_priv *priv = ds_to_priv(ds); 1220 u32 duplex, pause; 1221 u32 reg; 1222 1223 duplex = core_readl(priv, CORE_DUPSTS); 1224 pause = core_readl(priv, CORE_PAUSESTS); 1225 1226 status->link = 0; 1227 1228 /* MoCA port is special as we do not get link status from CORE_LNKSTS, 1229 * which means that we need to force the link at the port override 1230 * level to get the data to flow. We do use what the interrupt handler 1231 * did determine before. 1232 * 1233 * For the other ports, we just force the link status, since this is 1234 * a fixed PHY device. 1235 */ 1236 if (port == priv->moca_port) { 1237 status->link = priv->port_sts[port].link; 1238 /* For MoCA interfaces, also force a link down notification 1239 * since some version of the user-space daemon (mocad) use 1240 * cmd->autoneg to force the link, which messes up the PHY 1241 * state machine and make it go in PHY_FORCING state instead. 1242 */ 1243 if (!status->link) 1244 netif_carrier_off(ds->ports[port]); 1245 status->duplex = 1; 1246 } else { 1247 status->link = 1; 1248 status->duplex = !!(duplex & (1 << port)); 1249 } 1250 1251 reg = core_readl(priv, CORE_STS_OVERRIDE_GMIIP_PORT(port)); 1252 reg |= SW_OVERRIDE; 1253 if (status->link) 1254 reg |= LINK_STS; 1255 else 1256 reg &= ~LINK_STS; 1257 core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port)); 1258 1259 if ((pause & (1 << port)) && 1260 (pause & (1 << (port + PAUSESTS_TX_PAUSE_SHIFT)))) { 1261 status->asym_pause = 1; 1262 status->pause = 1; 1263 } 1264 1265 if (pause & (1 << port)) 1266 status->pause = 1; 1267 } 1268 1269 static int bcm_sf2_sw_suspend(struct dsa_switch *ds) 1270 { 1271 struct bcm_sf2_priv *priv = ds_to_priv(ds); 1272 unsigned int port; 1273 1274 bcm_sf2_intr_disable(priv); 1275 1276 /* Disable all ports physically present including the IMP 1277 * port, the other ones have already been disabled during 1278 * bcm_sf2_sw_setup 1279 */ 1280 for (port = 0; port < DSA_MAX_PORTS; port++) { 1281 if ((1 << port) & ds->phys_port_mask || 1282 dsa_is_cpu_port(ds, port)) 1283 bcm_sf2_port_disable(ds, port, NULL); 1284 } 1285 1286 return 0; 1287 } 1288 1289 static int bcm_sf2_sw_resume(struct dsa_switch *ds) 1290 { 1291 struct bcm_sf2_priv *priv = ds_to_priv(ds); 1292 unsigned int port; 1293 int ret; 1294 1295 ret = bcm_sf2_sw_rst(priv); 1296 if (ret) { 1297 pr_err("%s: failed to software reset switch\n", __func__); 1298 return ret; 1299 } 1300 1301 if (priv->hw_params.num_gphy == 1) 1302 bcm_sf2_gphy_enable_set(ds, true); 1303 1304 for (port = 0; port < DSA_MAX_PORTS; port++) { 1305 if ((1 << port) & ds->phys_port_mask) 1306 bcm_sf2_port_setup(ds, port, NULL); 1307 else if (dsa_is_cpu_port(ds, port)) 1308 bcm_sf2_imp_setup(ds, port); 1309 } 1310 1311 return 0; 1312 } 1313 1314 static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port, 1315 struct ethtool_wolinfo *wol) 1316 { 1317 struct net_device *p = ds->dst[ds->index].master_netdev; 1318 struct bcm_sf2_priv *priv = ds_to_priv(ds); 1319 struct ethtool_wolinfo pwol; 1320 1321 /* Get the parent device WoL settings */ 1322 p->ethtool_ops->get_wol(p, &pwol); 1323 1324 /* Advertise the parent device supported settings */ 1325 wol->supported = pwol.supported; 1326 memset(&wol->sopass, 0, sizeof(wol->sopass)); 1327 1328 if (pwol.wolopts & WAKE_MAGICSECURE) 1329 memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass)); 1330 1331 if (priv->wol_ports_mask & (1 << port)) 1332 wol->wolopts = pwol.wolopts; 1333 else 1334 wol->wolopts = 0; 1335 } 1336 1337 static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port, 1338 struct ethtool_wolinfo *wol) 1339 { 1340 struct net_device *p = ds->dst[ds->index].master_netdev; 1341 struct bcm_sf2_priv *priv = ds_to_priv(ds); 1342 s8 cpu_port = ds->dst[ds->index].cpu_port; 1343 struct ethtool_wolinfo pwol; 1344 1345 p->ethtool_ops->get_wol(p, &pwol); 1346 if (wol->wolopts & ~pwol.supported) 1347 return -EINVAL; 1348 1349 if (wol->wolopts) 1350 priv->wol_ports_mask |= (1 << port); 1351 else 1352 priv->wol_ports_mask &= ~(1 << port); 1353 1354 /* If we have at least one port enabled, make sure the CPU port 1355 * is also enabled. If the CPU port is the last one enabled, we disable 1356 * it since this configuration does not make sense. 1357 */ 1358 if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port)) 1359 priv->wol_ports_mask |= (1 << cpu_port); 1360 else 1361 priv->wol_ports_mask &= ~(1 << cpu_port); 1362 1363 return p->ethtool_ops->set_wol(p, wol); 1364 } 1365 1366 static struct dsa_switch_driver bcm_sf2_switch_driver = { 1367 .tag_protocol = DSA_TAG_PROTO_BRCM, 1368 .priv_size = sizeof(struct bcm_sf2_priv), 1369 .probe = bcm_sf2_sw_probe, 1370 .setup = bcm_sf2_sw_setup, 1371 .set_addr = bcm_sf2_sw_set_addr, 1372 .get_phy_flags = bcm_sf2_sw_get_phy_flags, 1373 .phy_read = bcm_sf2_sw_phy_read, 1374 .phy_write = bcm_sf2_sw_phy_write, 1375 .get_strings = bcm_sf2_sw_get_strings, 1376 .get_ethtool_stats = bcm_sf2_sw_get_ethtool_stats, 1377 .get_sset_count = bcm_sf2_sw_get_sset_count, 1378 .adjust_link = bcm_sf2_sw_adjust_link, 1379 .fixed_link_update = bcm_sf2_sw_fixed_link_update, 1380 .suspend = bcm_sf2_sw_suspend, 1381 .resume = bcm_sf2_sw_resume, 1382 .get_wol = bcm_sf2_sw_get_wol, 1383 .set_wol = bcm_sf2_sw_set_wol, 1384 .port_enable = bcm_sf2_port_setup, 1385 .port_disable = bcm_sf2_port_disable, 1386 .get_eee = bcm_sf2_sw_get_eee, 1387 .set_eee = bcm_sf2_sw_set_eee, 1388 .port_bridge_join = bcm_sf2_sw_br_join, 1389 .port_bridge_leave = bcm_sf2_sw_br_leave, 1390 .port_stp_update = bcm_sf2_sw_br_set_stp_state, 1391 .port_fdb_prepare = bcm_sf2_sw_fdb_prepare, 1392 .port_fdb_add = bcm_sf2_sw_fdb_add, 1393 .port_fdb_del = bcm_sf2_sw_fdb_del, 1394 .port_fdb_dump = bcm_sf2_sw_fdb_dump, 1395 }; 1396 1397 static int __init bcm_sf2_init(void) 1398 { 1399 register_switch_driver(&bcm_sf2_switch_driver); 1400 1401 return 0; 1402 } 1403 module_init(bcm_sf2_init); 1404 1405 static void __exit bcm_sf2_exit(void) 1406 { 1407 unregister_switch_driver(&bcm_sf2_switch_driver); 1408 } 1409 module_exit(bcm_sf2_exit); 1410 1411 MODULE_AUTHOR("Broadcom Corporation"); 1412 MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip"); 1413 MODULE_LICENSE("GPL"); 1414 MODULE_ALIAS("platform:brcm-sf2"); 1415