1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Broadcom Starfighter 2 DSA switch driver
5 * Copyright (C) 2014, Broadcom Corporation
8 #include <linux/list.h>
9 #include <linux/module.h>
10 #include <linux/netdevice.h>
11 #include <linux/interrupt.h>
12 #include <linux/platform_device.h>
13 #include <linux/phy.h>
14 #include <linux/phy_fixed.h>
15 #include <linux/phylink.h>
16 #include <linux/mii.h>
18 #include <linux/of_irq.h>
19 #include <linux/of_address.h>
20 #include <linux/of_net.h>
21 #include <linux/of_mdio.h>
23 #include <linux/ethtool.h>
24 #include <linux/if_bridge.h>
25 #include <linux/brcmphy.h>
26 #include <linux/etherdevice.h>
27 #include <linux/platform_data/b53.h>
30 #include "bcm_sf2_regs.h"
31 #include "b53/b53_priv.h"
32 #include "b53/b53_regs.h"
34 static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
36 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
40 /* Enable the port memories */
41 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
42 reg &= ~P_TXQ_PSM_VDD(port);
43 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
45 /* Enable forwarding */
46 core_writel(priv, SW_FWDG_EN, CORE_SWMODE);
48 /* Enable IMP port in dumb mode */
49 reg = core_readl(priv, CORE_SWITCH_CTRL);
50 reg |= MII_DUMB_FWDG_EN;
51 core_writel(priv, reg, CORE_SWITCH_CTRL);
53 /* Configure Traffic Class to QoS mapping, allow each priority to map
54 * to a different queue number
56 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
57 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
58 reg |= i << (PRT_TO_QID_SHIFT * i);
59 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
61 b53_brcm_hdr_setup(ds, port);
64 if (priv->type == BCM7445_DEVICE_ID)
65 offset = CORE_STS_OVERRIDE_IMP;
67 offset = CORE_STS_OVERRIDE_IMP2;
69 /* Force link status for IMP port */
70 reg = core_readl(priv, offset);
71 reg |= (MII_SW_OR | LINK_STS);
72 core_writel(priv, reg, offset);
74 /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */
75 reg = core_readl(priv, CORE_IMP_CTL);
76 reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN);
77 reg &= ~(RX_DIS | TX_DIS);
78 core_writel(priv, reg, CORE_IMP_CTL);
80 reg = core_readl(priv, CORE_G_PCTL_PORT(port));
81 reg &= ~(RX_DIS | TX_DIS);
82 core_writel(priv, reg, CORE_G_PCTL_PORT(port));
86 static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable)
88 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
91 reg = reg_readl(priv, REG_SPHY_CNTRL);
94 reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | IDDQ_GLOBAL_PWR | CK25_DIS);
95 reg_writel(priv, reg, REG_SPHY_CNTRL);
97 reg = reg_readl(priv, REG_SPHY_CNTRL);
100 reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET;
101 reg_writel(priv, reg, REG_SPHY_CNTRL);
105 reg_writel(priv, reg, REG_SPHY_CNTRL);
107 /* Use PHY-driven LED signaling */
109 reg = reg_readl(priv, REG_LED_CNTRL(0));
110 reg |= SPDLNK_SRC_SEL;
111 reg_writel(priv, reg, REG_LED_CNTRL(0));
115 static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv,
125 /* Port 0 interrupts are located on the first bank */
126 intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF));
129 off = P_IRQ_OFF(port);
133 intrl2_1_mask_clear(priv, P_IRQ_MASK(off));
136 static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv,
146 /* Port 0 interrupts are located on the first bank */
147 intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF));
148 intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR);
151 off = P_IRQ_OFF(port);
155 intrl2_1_mask_set(priv, P_IRQ_MASK(off));
156 intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR);
159 static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
160 struct phy_device *phy)
162 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
166 /* Clear the memory power down */
167 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
168 reg &= ~P_TXQ_PSM_VDD(port);
169 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
171 /* Enable learning */
172 reg = core_readl(priv, CORE_DIS_LEARN);
174 core_writel(priv, reg, CORE_DIS_LEARN);
176 /* Enable Broadcom tags for that port if requested */
177 if (priv->brcm_tag_mask & BIT(port))
178 b53_brcm_hdr_setup(ds, port);
180 /* Configure Traffic Class to QoS mapping, allow each priority to map
181 * to a different queue number
183 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
184 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
185 reg |= i << (PRT_TO_QID_SHIFT * i);
186 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
188 /* Re-enable the GPHY and re-apply workarounds */
189 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) {
190 bcm_sf2_gphy_enable_set(ds, true);
192 /* if phy_stop() has been called before, phy
193 * will be in halted state, and phy_start()
196 * the resume path does not configure back
197 * autoneg settings, and since we hard reset
198 * the phy manually here, we need to reset the
199 * state machine also.
201 phy->state = PHY_READY;
206 /* Enable MoCA port interrupts to get notified */
207 if (port == priv->moca_port)
208 bcm_sf2_port_intr_enable(priv, port);
210 /* Set per-queue pause threshold to 32 */
211 core_writel(priv, 32, CORE_TXQ_THD_PAUSE_QN_PORT(port));
213 /* Set ACB threshold to 24 */
214 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++) {
215 reg = acb_readl(priv, ACB_QUEUE_CFG(port *
216 SF2_NUM_EGRESS_QUEUES + i));
217 reg &= ~XOFF_THRESHOLD_MASK;
219 acb_writel(priv, reg, ACB_QUEUE_CFG(port *
220 SF2_NUM_EGRESS_QUEUES + i));
223 return b53_enable_port(ds, port, phy);
226 static void bcm_sf2_port_disable(struct dsa_switch *ds, int port)
228 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
231 /* Disable learning while in WoL mode */
232 if (priv->wol_ports_mask & (1 << port)) {
233 reg = core_readl(priv, CORE_DIS_LEARN);
235 core_writel(priv, reg, CORE_DIS_LEARN);
239 if (port == priv->moca_port)
240 bcm_sf2_port_intr_disable(priv, port);
242 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1)
243 bcm_sf2_gphy_enable_set(ds, false);
245 b53_disable_port(ds, port);
247 /* Power down the port memory */
248 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
249 reg |= P_TXQ_PSM_VDD(port);
250 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
254 static int bcm_sf2_sw_indir_rw(struct bcm_sf2_priv *priv, int op, int addr,
260 reg = reg_readl(priv, REG_SWITCH_CNTRL);
261 reg |= MDIO_MASTER_SEL;
262 reg_writel(priv, reg, REG_SWITCH_CNTRL);
264 /* Page << 8 | offset */
267 core_writel(priv, addr, reg);
269 /* Page << 8 | offset */
270 reg = 0x80 << 8 | regnum << 1;
274 ret = core_readl(priv, reg);
276 core_writel(priv, val, reg);
278 reg = reg_readl(priv, REG_SWITCH_CNTRL);
279 reg &= ~MDIO_MASTER_SEL;
280 reg_writel(priv, reg, REG_SWITCH_CNTRL);
285 static int bcm_sf2_sw_mdio_read(struct mii_bus *bus, int addr, int regnum)
287 struct bcm_sf2_priv *priv = bus->priv;
289 /* Intercept reads from Broadcom pseudo-PHY address, else, send
290 * them to our master MDIO bus controller
292 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
293 return bcm_sf2_sw_indir_rw(priv, 1, addr, regnum, 0);
295 return mdiobus_read_nested(priv->master_mii_bus, addr, regnum);
298 static int bcm_sf2_sw_mdio_write(struct mii_bus *bus, int addr, int regnum,
301 struct bcm_sf2_priv *priv = bus->priv;
303 /* Intercept writes to the Broadcom pseudo-PHY address, else,
304 * send them to our master MDIO bus controller
306 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
307 return bcm_sf2_sw_indir_rw(priv, 0, addr, regnum, val);
309 return mdiobus_write_nested(priv->master_mii_bus, addr,
313 static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id)
315 struct dsa_switch *ds = dev_id;
316 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
318 priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
320 intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR);
325 static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id)
327 struct dsa_switch *ds = dev_id;
328 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
330 priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
332 intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR);
334 if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF)) {
335 priv->port_sts[7].link = true;
336 dsa_port_phylink_mac_change(ds, 7, true);
338 if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF)) {
339 priv->port_sts[7].link = false;
340 dsa_port_phylink_mac_change(ds, 7, false);
346 static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv)
348 unsigned int timeout = 1000;
351 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
352 reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET;
353 core_writel(priv, reg, CORE_WATCHDOG_CTRL);
356 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
357 if (!(reg & SOFTWARE_RESET))
360 usleep_range(1000, 2000);
361 } while (timeout-- > 0);
369 static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
371 intrl2_0_mask_set(priv, 0xffffffff);
372 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
373 intrl2_1_mask_set(priv, 0xffffffff);
374 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
377 static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,
378 struct device_node *dn)
380 struct device_node *port;
382 unsigned int port_num;
384 priv->moca_port = -1;
386 for_each_available_child_of_node(dn, port) {
387 if (of_property_read_u32(port, "reg", &port_num))
390 /* Internal PHYs get assigned a specific 'phy-mode' property
391 * value: "internal" to help flag them before MDIO probing
392 * has completed, since they might be turned off at that
395 mode = of_get_phy_mode(port);
399 if (mode == PHY_INTERFACE_MODE_INTERNAL)
400 priv->int_phy_mask |= 1 << port_num;
402 if (mode == PHY_INTERFACE_MODE_MOCA)
403 priv->moca_port = port_num;
405 if (of_property_read_bool(port, "brcm,use-bcm-hdr"))
406 priv->brcm_tag_mask |= 1 << port_num;
410 static int bcm_sf2_mdio_register(struct dsa_switch *ds)
412 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
413 struct device_node *dn;
417 /* Find our integrated MDIO bus node */
418 dn = of_find_compatible_node(NULL, NULL, "brcm,unimac-mdio");
419 priv->master_mii_bus = of_mdio_find_bus(dn);
420 if (!priv->master_mii_bus)
421 return -EPROBE_DEFER;
423 get_device(&priv->master_mii_bus->dev);
424 priv->master_mii_dn = dn;
426 priv->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
427 if (!priv->slave_mii_bus)
430 priv->slave_mii_bus->priv = priv;
431 priv->slave_mii_bus->name = "sf2 slave mii";
432 priv->slave_mii_bus->read = bcm_sf2_sw_mdio_read;
433 priv->slave_mii_bus->write = bcm_sf2_sw_mdio_write;
434 snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "sf2-%d",
436 priv->slave_mii_bus->dev.of_node = dn;
438 /* Include the pseudo-PHY address to divert reads towards our
439 * workaround. This is only required for 7445D0, since 7445E0
440 * disconnects the internal switch pseudo-PHY such that we can use the
441 * regular SWITCH_MDIO master controller instead.
443 * Here we flag the pseudo PHY as needing special treatment and would
444 * otherwise make all other PHY read/writes go to the master MDIO bus
445 * controller that comes with this switch backed by the "mdio-unimac"
448 if (of_machine_is_compatible("brcm,bcm7445d0"))
449 priv->indir_phy_mask |= (1 << BRCM_PSEUDO_PHY_ADDR);
451 priv->indir_phy_mask = 0;
453 ds->phys_mii_mask = priv->indir_phy_mask;
454 ds->slave_mii_bus = priv->slave_mii_bus;
455 priv->slave_mii_bus->parent = ds->dev->parent;
456 priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask;
458 err = of_mdiobus_register(priv->slave_mii_bus, dn);
465 static void bcm_sf2_mdio_unregister(struct bcm_sf2_priv *priv)
467 mdiobus_unregister(priv->slave_mii_bus);
468 of_node_put(priv->master_mii_dn);
471 static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port)
473 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
475 /* The BCM7xxx PHY driver expects to find the integrated PHY revision
476 * in bits 15:8 and the patch level in bits 7:0 which is exactly what
477 * the REG_PHY_REVISION register layout is.
480 return priv->hw_params.gphy_rev;
483 static void bcm_sf2_sw_validate(struct dsa_switch *ds, int port,
484 unsigned long *supported,
485 struct phylink_link_state *state)
487 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
488 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
490 if (!phy_interface_mode_is_rgmii(state->interface) &&
491 state->interface != PHY_INTERFACE_MODE_MII &&
492 state->interface != PHY_INTERFACE_MODE_REVMII &&
493 state->interface != PHY_INTERFACE_MODE_GMII &&
494 state->interface != PHY_INTERFACE_MODE_INTERNAL &&
495 state->interface != PHY_INTERFACE_MODE_MOCA) {
496 bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
497 if (port != core_readl(priv, CORE_IMP0_PRT_ID))
499 "Unsupported interface: %d for port %d\n",
500 state->interface, port);
504 /* Allow all the expected bits */
505 phylink_set(mask, Autoneg);
506 phylink_set_port_modes(mask);
507 phylink_set(mask, Pause);
508 phylink_set(mask, Asym_Pause);
510 /* With the exclusion of MII and Reverse MII, we support Gigabit,
511 * including Half duplex
513 if (state->interface != PHY_INTERFACE_MODE_MII &&
514 state->interface != PHY_INTERFACE_MODE_REVMII) {
515 phylink_set(mask, 1000baseT_Full);
516 phylink_set(mask, 1000baseT_Half);
519 phylink_set(mask, 10baseT_Half);
520 phylink_set(mask, 10baseT_Full);
521 phylink_set(mask, 100baseT_Half);
522 phylink_set(mask, 100baseT_Full);
524 bitmap_and(supported, supported, mask,
525 __ETHTOOL_LINK_MODE_MASK_NBITS);
526 bitmap_and(state->advertising, state->advertising, mask,
527 __ETHTOOL_LINK_MODE_MASK_NBITS);
530 static void bcm_sf2_sw_mac_config(struct dsa_switch *ds, int port,
532 const struct phylink_link_state *state)
534 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
535 u32 id_mode_dis = 0, port_mode;
538 if (port == core_readl(priv, CORE_IMP0_PRT_ID))
541 if (priv->type == BCM7445_DEVICE_ID)
542 offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
544 offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
546 switch (state->interface) {
547 case PHY_INTERFACE_MODE_RGMII:
550 case PHY_INTERFACE_MODE_RGMII_TXID:
551 port_mode = EXT_GPHY;
553 case PHY_INTERFACE_MODE_MII:
554 port_mode = EXT_EPHY;
556 case PHY_INTERFACE_MODE_REVMII:
557 port_mode = EXT_REVMII;
560 /* all other PHYs: internal and MoCA */
564 /* Clear id_mode_dis bit, and the existing port mode, let
565 * RGMII_MODE_EN bet set by mac_link_{up,down}
567 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
569 reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT);
570 reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN);
576 if (state->pause & MLO_PAUSE_TXRX_MASK) {
577 if (state->pause & MLO_PAUSE_TX)
582 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
585 /* Force link settings detected from the PHY */
587 switch (state->speed) {
589 reg |= SPDSTS_1000 << SPEED_SHIFT;
592 reg |= SPDSTS_100 << SPEED_SHIFT;
598 if (state->duplex == DUPLEX_FULL)
601 core_writel(priv, reg, offset);
604 static void bcm_sf2_sw_mac_link_set(struct dsa_switch *ds, int port,
605 phy_interface_t interface, bool link)
607 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
610 if (!phy_interface_mode_is_rgmii(interface) &&
611 interface != PHY_INTERFACE_MODE_MII &&
612 interface != PHY_INTERFACE_MODE_REVMII)
615 /* If the link is down, just disable the interface to conserve power */
616 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
618 reg |= RGMII_MODE_EN;
620 reg &= ~RGMII_MODE_EN;
621 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
624 static void bcm_sf2_sw_mac_link_down(struct dsa_switch *ds, int port,
626 phy_interface_t interface)
628 bcm_sf2_sw_mac_link_set(ds, port, interface, false);
631 static void bcm_sf2_sw_mac_link_up(struct dsa_switch *ds, int port,
633 phy_interface_t interface,
634 struct phy_device *phydev)
636 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
637 struct ethtool_eee *p = &priv->dev->ports[port].eee;
639 bcm_sf2_sw_mac_link_set(ds, port, interface, true);
641 if (mode == MLO_AN_PHY && phydev)
642 p->eee_enabled = b53_eee_init(ds, port, phydev);
645 static void bcm_sf2_sw_fixed_state(struct dsa_switch *ds, int port,
646 struct phylink_link_state *status)
648 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
650 status->link = false;
652 /* MoCA port is special as we do not get link status from CORE_LNKSTS,
653 * which means that we need to force the link at the port override
654 * level to get the data to flow. We do use what the interrupt handler
655 * did determine before.
657 * For the other ports, we just force the link status, since this is
658 * a fixed PHY device.
660 if (port == priv->moca_port) {
661 status->link = priv->port_sts[port].link;
662 /* For MoCA interfaces, also force a link down notification
663 * since some version of the user-space daemon (mocad) use
664 * cmd->autoneg to force the link, which messes up the PHY
665 * state machine and make it go in PHY_FORCING state instead.
668 netif_carrier_off(ds->ports[port].slave);
669 status->duplex = DUPLEX_FULL;
675 static void bcm_sf2_enable_acb(struct dsa_switch *ds)
677 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
680 /* Enable ACB globally */
681 reg = acb_readl(priv, ACB_CONTROL);
682 reg |= (ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
683 acb_writel(priv, reg, ACB_CONTROL);
684 reg &= ~(ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
685 reg |= ACB_EN | ACB_ALGORITHM;
686 acb_writel(priv, reg, ACB_CONTROL);
689 static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
691 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
694 bcm_sf2_intr_disable(priv);
696 /* Disable all ports physically present including the IMP
697 * port, the other ones have already been disabled during
700 for (port = 0; port < ds->num_ports; port++) {
701 if (dsa_is_user_port(ds, port) || dsa_is_cpu_port(ds, port))
702 bcm_sf2_port_disable(ds, port);
708 static int bcm_sf2_sw_resume(struct dsa_switch *ds)
710 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
713 ret = bcm_sf2_sw_rst(priv);
715 pr_err("%s: failed to software reset switch\n", __func__);
719 ret = bcm_sf2_cfp_resume(ds);
723 if (priv->hw_params.num_gphy == 1)
724 bcm_sf2_gphy_enable_set(ds, true);
731 static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
732 struct ethtool_wolinfo *wol)
734 struct net_device *p = ds->ports[port].cpu_dp->master;
735 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
736 struct ethtool_wolinfo pwol = { };
738 /* Get the parent device WoL settings */
739 if (p->ethtool_ops->get_wol)
740 p->ethtool_ops->get_wol(p, &pwol);
742 /* Advertise the parent device supported settings */
743 wol->supported = pwol.supported;
744 memset(&wol->sopass, 0, sizeof(wol->sopass));
746 if (pwol.wolopts & WAKE_MAGICSECURE)
747 memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass));
749 if (priv->wol_ports_mask & (1 << port))
750 wol->wolopts = pwol.wolopts;
755 static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
756 struct ethtool_wolinfo *wol)
758 struct net_device *p = ds->ports[port].cpu_dp->master;
759 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
760 s8 cpu_port = ds->ports[port].cpu_dp->index;
761 struct ethtool_wolinfo pwol = { };
763 if (p->ethtool_ops->get_wol)
764 p->ethtool_ops->get_wol(p, &pwol);
765 if (wol->wolopts & ~pwol.supported)
769 priv->wol_ports_mask |= (1 << port);
771 priv->wol_ports_mask &= ~(1 << port);
773 /* If we have at least one port enabled, make sure the CPU port
774 * is also enabled. If the CPU port is the last one enabled, we disable
775 * it since this configuration does not make sense.
777 if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port))
778 priv->wol_ports_mask |= (1 << cpu_port);
780 priv->wol_ports_mask &= ~(1 << cpu_port);
782 return p->ethtool_ops->set_wol(p, wol);
785 static int bcm_sf2_sw_setup(struct dsa_switch *ds)
787 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
790 /* Enable all valid ports and disable those unused */
791 for (port = 0; port < priv->hw_params.num_ports; port++) {
792 /* IMP port receives special treatment */
793 if (dsa_is_user_port(ds, port))
794 bcm_sf2_port_setup(ds, port, NULL);
795 else if (dsa_is_cpu_port(ds, port))
796 bcm_sf2_imp_setup(ds, port);
798 bcm_sf2_port_disable(ds, port);
801 b53_configure_vlan(ds);
802 bcm_sf2_enable_acb(ds);
807 /* The SWITCH_CORE register space is managed by b53 but operates on a page +
808 * register basis so we need to translate that into an address that the
809 * bus-glue understands.
811 #define SF2_PAGE_REG_MKADDR(page, reg) ((page) << 10 | (reg) << 2)
813 static int bcm_sf2_core_read8(struct b53_device *dev, u8 page, u8 reg,
816 struct bcm_sf2_priv *priv = dev->priv;
818 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
823 static int bcm_sf2_core_read16(struct b53_device *dev, u8 page, u8 reg,
826 struct bcm_sf2_priv *priv = dev->priv;
828 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
833 static int bcm_sf2_core_read32(struct b53_device *dev, u8 page, u8 reg,
836 struct bcm_sf2_priv *priv = dev->priv;
838 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
843 static int bcm_sf2_core_read64(struct b53_device *dev, u8 page, u8 reg,
846 struct bcm_sf2_priv *priv = dev->priv;
848 *val = core_readq(priv, SF2_PAGE_REG_MKADDR(page, reg));
853 static int bcm_sf2_core_write8(struct b53_device *dev, u8 page, u8 reg,
856 struct bcm_sf2_priv *priv = dev->priv;
858 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
863 static int bcm_sf2_core_write16(struct b53_device *dev, u8 page, u8 reg,
866 struct bcm_sf2_priv *priv = dev->priv;
868 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
873 static int bcm_sf2_core_write32(struct b53_device *dev, u8 page, u8 reg,
876 struct bcm_sf2_priv *priv = dev->priv;
878 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
883 static int bcm_sf2_core_write64(struct b53_device *dev, u8 page, u8 reg,
886 struct bcm_sf2_priv *priv = dev->priv;
888 core_writeq(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
893 static const struct b53_io_ops bcm_sf2_io_ops = {
894 .read8 = bcm_sf2_core_read8,
895 .read16 = bcm_sf2_core_read16,
896 .read32 = bcm_sf2_core_read32,
897 .read48 = bcm_sf2_core_read64,
898 .read64 = bcm_sf2_core_read64,
899 .write8 = bcm_sf2_core_write8,
900 .write16 = bcm_sf2_core_write16,
901 .write32 = bcm_sf2_core_write32,
902 .write48 = bcm_sf2_core_write64,
903 .write64 = bcm_sf2_core_write64,
906 static void bcm_sf2_sw_get_strings(struct dsa_switch *ds, int port,
907 u32 stringset, uint8_t *data)
909 int cnt = b53_get_sset_count(ds, port, stringset);
911 b53_get_strings(ds, port, stringset, data);
912 bcm_sf2_cfp_get_strings(ds, port, stringset,
913 data + cnt * ETH_GSTRING_LEN);
916 static void bcm_sf2_sw_get_ethtool_stats(struct dsa_switch *ds, int port,
919 int cnt = b53_get_sset_count(ds, port, ETH_SS_STATS);
921 b53_get_ethtool_stats(ds, port, data);
922 bcm_sf2_cfp_get_ethtool_stats(ds, port, data + cnt);
925 static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds, int port,
928 int cnt = b53_get_sset_count(ds, port, sset);
933 cnt += bcm_sf2_cfp_get_sset_count(ds, port, sset);
938 static const struct dsa_switch_ops bcm_sf2_ops = {
939 .get_tag_protocol = b53_get_tag_protocol,
940 .setup = bcm_sf2_sw_setup,
941 .get_strings = bcm_sf2_sw_get_strings,
942 .get_ethtool_stats = bcm_sf2_sw_get_ethtool_stats,
943 .get_sset_count = bcm_sf2_sw_get_sset_count,
944 .get_ethtool_phy_stats = b53_get_ethtool_phy_stats,
945 .get_phy_flags = bcm_sf2_sw_get_phy_flags,
946 .phylink_validate = bcm_sf2_sw_validate,
947 .phylink_mac_config = bcm_sf2_sw_mac_config,
948 .phylink_mac_link_down = bcm_sf2_sw_mac_link_down,
949 .phylink_mac_link_up = bcm_sf2_sw_mac_link_up,
950 .phylink_fixed_state = bcm_sf2_sw_fixed_state,
951 .suspend = bcm_sf2_sw_suspend,
952 .resume = bcm_sf2_sw_resume,
953 .get_wol = bcm_sf2_sw_get_wol,
954 .set_wol = bcm_sf2_sw_set_wol,
955 .port_enable = bcm_sf2_port_setup,
956 .port_disable = bcm_sf2_port_disable,
957 .get_mac_eee = b53_get_mac_eee,
958 .set_mac_eee = b53_set_mac_eee,
959 .port_bridge_join = b53_br_join,
960 .port_bridge_leave = b53_br_leave,
961 .port_stp_state_set = b53_br_set_stp_state,
962 .port_fast_age = b53_br_fast_age,
963 .port_vlan_filtering = b53_vlan_filtering,
964 .port_vlan_prepare = b53_vlan_prepare,
965 .port_vlan_add = b53_vlan_add,
966 .port_vlan_del = b53_vlan_del,
967 .port_fdb_dump = b53_fdb_dump,
968 .port_fdb_add = b53_fdb_add,
969 .port_fdb_del = b53_fdb_del,
970 .get_rxnfc = bcm_sf2_get_rxnfc,
971 .set_rxnfc = bcm_sf2_set_rxnfc,
972 .port_mirror_add = b53_mirror_add,
973 .port_mirror_del = b53_mirror_del,
976 struct bcm_sf2_of_data {
978 const u16 *reg_offsets;
979 unsigned int core_reg_align;
980 unsigned int num_cfp_rules;
983 /* Register offsets for the SWITCH_REG_* block */
984 static const u16 bcm_sf2_7445_reg_offsets[] = {
985 [REG_SWITCH_CNTRL] = 0x00,
986 [REG_SWITCH_STATUS] = 0x04,
987 [REG_DIR_DATA_WRITE] = 0x08,
988 [REG_DIR_DATA_READ] = 0x0C,
989 [REG_SWITCH_REVISION] = 0x18,
990 [REG_PHY_REVISION] = 0x1C,
991 [REG_SPHY_CNTRL] = 0x2C,
992 [REG_RGMII_0_CNTRL] = 0x34,
993 [REG_RGMII_1_CNTRL] = 0x40,
994 [REG_RGMII_2_CNTRL] = 0x4c,
995 [REG_LED_0_CNTRL] = 0x90,
996 [REG_LED_1_CNTRL] = 0x94,
997 [REG_LED_2_CNTRL] = 0x98,
1000 static const struct bcm_sf2_of_data bcm_sf2_7445_data = {
1001 .type = BCM7445_DEVICE_ID,
1002 .core_reg_align = 0,
1003 .reg_offsets = bcm_sf2_7445_reg_offsets,
1004 .num_cfp_rules = 256,
1007 static const u16 bcm_sf2_7278_reg_offsets[] = {
1008 [REG_SWITCH_CNTRL] = 0x00,
1009 [REG_SWITCH_STATUS] = 0x04,
1010 [REG_DIR_DATA_WRITE] = 0x08,
1011 [REG_DIR_DATA_READ] = 0x0c,
1012 [REG_SWITCH_REVISION] = 0x10,
1013 [REG_PHY_REVISION] = 0x14,
1014 [REG_SPHY_CNTRL] = 0x24,
1015 [REG_RGMII_0_CNTRL] = 0xe0,
1016 [REG_RGMII_1_CNTRL] = 0xec,
1017 [REG_RGMII_2_CNTRL] = 0xf8,
1018 [REG_LED_0_CNTRL] = 0x40,
1019 [REG_LED_1_CNTRL] = 0x4c,
1020 [REG_LED_2_CNTRL] = 0x58,
1023 static const struct bcm_sf2_of_data bcm_sf2_7278_data = {
1024 .type = BCM7278_DEVICE_ID,
1025 .core_reg_align = 1,
1026 .reg_offsets = bcm_sf2_7278_reg_offsets,
1027 .num_cfp_rules = 128,
1030 static const struct of_device_id bcm_sf2_of_match[] = {
1031 { .compatible = "brcm,bcm7445-switch-v4.0",
1032 .data = &bcm_sf2_7445_data
1034 { .compatible = "brcm,bcm7278-switch-v4.0",
1035 .data = &bcm_sf2_7278_data
1037 { .compatible = "brcm,bcm7278-switch-v4.8",
1038 .data = &bcm_sf2_7278_data
1042 MODULE_DEVICE_TABLE(of, bcm_sf2_of_match);
1044 static int bcm_sf2_sw_probe(struct platform_device *pdev)
1046 const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
1047 struct device_node *dn = pdev->dev.of_node;
1048 const struct of_device_id *of_id = NULL;
1049 const struct bcm_sf2_of_data *data;
1050 struct b53_platform_data *pdata;
1051 struct dsa_switch_ops *ops;
1052 struct bcm_sf2_priv *priv;
1053 struct b53_device *dev;
1054 struct dsa_switch *ds;
1055 void __iomem **base;
1061 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1065 ops = devm_kzalloc(&pdev->dev, sizeof(*ops), GFP_KERNEL);
1069 dev = b53_switch_alloc(&pdev->dev, &bcm_sf2_io_ops, priv);
1073 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1077 of_id = of_match_node(bcm_sf2_of_match, dn);
1078 if (!of_id || !of_id->data)
1083 /* Set SWITCH_REG register offsets and SWITCH_CORE align factor */
1084 priv->type = data->type;
1085 priv->reg_offsets = data->reg_offsets;
1086 priv->core_reg_align = data->core_reg_align;
1087 priv->num_cfp_rules = data->num_cfp_rules;
1089 /* Auto-detection using standard registers will not work, so
1090 * provide an indication of what kind of device we are for
1091 * b53_common to work with
1093 pdata->chip_id = priv->type;
1098 ds->ops = &bcm_sf2_ops;
1100 /* Advertise the 8 egress queues */
1101 ds->num_tx_queues = SF2_NUM_EGRESS_QUEUES;
1103 dev_set_drvdata(&pdev->dev, priv);
1105 spin_lock_init(&priv->indir_lock);
1106 mutex_init(&priv->cfp.lock);
1107 INIT_LIST_HEAD(&priv->cfp.rules_list);
1109 /* CFP rule #0 cannot be used for specific classifications, flag it as
1112 set_bit(0, priv->cfp.used);
1113 set_bit(0, priv->cfp.unique);
1115 bcm_sf2_identify_ports(priv, dn->child);
1117 priv->irq0 = irq_of_parse_and_map(dn, 0);
1118 priv->irq1 = irq_of_parse_and_map(dn, 1);
1121 for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
1122 r = platform_get_resource(pdev, IORESOURCE_MEM, i);
1123 *base = devm_ioremap_resource(&pdev->dev, r);
1124 if (IS_ERR(*base)) {
1125 pr_err("unable to find register: %s\n", reg_names[i]);
1126 return PTR_ERR(*base);
1131 ret = bcm_sf2_sw_rst(priv);
1133 pr_err("unable to software reset switch: %d\n", ret);
1137 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1139 ret = bcm_sf2_mdio_register(ds);
1141 pr_err("failed to register MDIO bus\n");
1145 bcm_sf2_gphy_enable_set(priv->dev->ds, false);
1147 ret = bcm_sf2_cfp_rst(priv);
1149 pr_err("failed to reset CFP\n");
1153 /* Disable all interrupts and request them */
1154 bcm_sf2_intr_disable(priv);
1156 ret = devm_request_irq(&pdev->dev, priv->irq0, bcm_sf2_switch_0_isr, 0,
1159 pr_err("failed to request switch_0 IRQ\n");
1163 ret = devm_request_irq(&pdev->dev, priv->irq1, bcm_sf2_switch_1_isr, 0,
1166 pr_err("failed to request switch_1 IRQ\n");
1170 /* Reset the MIB counters */
1171 reg = core_readl(priv, CORE_GMNCFGCFG);
1173 core_writel(priv, reg, CORE_GMNCFGCFG);
1174 reg &= ~RST_MIB_CNT;
1175 core_writel(priv, reg, CORE_GMNCFGCFG);
1177 /* Get the maximum number of ports for this switch */
1178 priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1;
1179 if (priv->hw_params.num_ports > DSA_MAX_PORTS)
1180 priv->hw_params.num_ports = DSA_MAX_PORTS;
1182 /* Assume a single GPHY setup if we can't read that property */
1183 if (of_property_read_u32(dn, "brcm,num-gphy",
1184 &priv->hw_params.num_gphy))
1185 priv->hw_params.num_gphy = 1;
1187 rev = reg_readl(priv, REG_SWITCH_REVISION);
1188 priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &
1189 SWITCH_TOP_REV_MASK;
1190 priv->hw_params.core_rev = (rev & SF2_REV_MASK);
1192 rev = reg_readl(priv, REG_PHY_REVISION);
1193 priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
1195 ret = b53_switch_register(dev);
1199 dev_info(&pdev->dev,
1200 "Starfighter 2 top: %x.%02x, core: %x.%02x, IRQs: %d, %d\n",
1201 priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
1202 priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
1203 priv->irq0, priv->irq1);
1208 bcm_sf2_mdio_unregister(priv);
1212 static int bcm_sf2_sw_remove(struct platform_device *pdev)
1214 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1216 priv->wol_ports_mask = 0;
1217 dsa_unregister_switch(priv->dev->ds);
1218 bcm_sf2_cfp_exit(priv->dev->ds);
1219 /* Disable all ports and interrupts */
1220 bcm_sf2_sw_suspend(priv->dev->ds);
1221 bcm_sf2_mdio_unregister(priv);
1226 static void bcm_sf2_sw_shutdown(struct platform_device *pdev)
1228 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1230 /* For a kernel about to be kexec'd we want to keep the GPHY on for a
1231 * successful MDIO bus scan to occur. If we did turn off the GPHY
1232 * before (e.g: port_disable), this will also power it back on.
1234 * Do not rely on kexec_in_progress, just power the PHY on.
1236 if (priv->hw_params.num_gphy == 1)
1237 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1240 #ifdef CONFIG_PM_SLEEP
1241 static int bcm_sf2_suspend(struct device *dev)
1243 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1245 return dsa_switch_suspend(priv->dev->ds);
1248 static int bcm_sf2_resume(struct device *dev)
1250 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1252 return dsa_switch_resume(priv->dev->ds);
1254 #endif /* CONFIG_PM_SLEEP */
1256 static SIMPLE_DEV_PM_OPS(bcm_sf2_pm_ops,
1257 bcm_sf2_suspend, bcm_sf2_resume);
1260 static struct platform_driver bcm_sf2_driver = {
1261 .probe = bcm_sf2_sw_probe,
1262 .remove = bcm_sf2_sw_remove,
1263 .shutdown = bcm_sf2_sw_shutdown,
1266 .of_match_table = bcm_sf2_of_match,
1267 .pm = &bcm_sf2_pm_ops,
1270 module_platform_driver(bcm_sf2_driver);
1272 MODULE_AUTHOR("Broadcom Corporation");
1273 MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip");
1274 MODULE_LICENSE("GPL");
1275 MODULE_ALIAS("platform:brcm-sf2");