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>
17 #include <linux/clk.h>
19 #include <linux/of_irq.h>
20 #include <linux/of_address.h>
21 #include <linux/of_net.h>
22 #include <linux/of_mdio.h>
24 #include <linux/ethtool.h>
25 #include <linux/if_bridge.h>
26 #include <linux/brcmphy.h>
27 #include <linux/etherdevice.h>
28 #include <linux/platform_data/b53.h>
31 #include "bcm_sf2_regs.h"
32 #include "b53/b53_priv.h"
33 #include "b53/b53_regs.h"
35 /* Return the number of active ports, not counting the IMP (CPU) port */
36 static unsigned int bcm_sf2_num_active_ports(struct dsa_switch *ds)
38 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
39 unsigned int port, count = 0;
41 for (port = 0; port < ARRAY_SIZE(priv->port_sts); port++) {
42 if (dsa_is_cpu_port(ds, port))
44 if (priv->port_sts[port].enabled)
51 static void bcm_sf2_recalc_clock(struct dsa_switch *ds)
53 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
54 unsigned long new_rate;
55 unsigned int ports_active;
56 /* Frequenty in Mhz */
57 static const unsigned long rate_table[] = {
64 ports_active = bcm_sf2_num_active_ports(ds);
65 if (ports_active == 0 || !priv->clk_mdiv)
68 /* If we overflow our table, just use the recommended operational
71 if (ports_active > ARRAY_SIZE(rate_table))
74 new_rate = rate_table[ports_active - 1];
75 clk_set_rate(priv->clk_mdiv, new_rate);
78 static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
80 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
84 /* Enable the port memories */
85 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
86 reg &= ~P_TXQ_PSM_VDD(port);
87 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
89 /* Enable forwarding */
90 core_writel(priv, SW_FWDG_EN, CORE_SWMODE);
92 /* Enable IMP port in dumb mode */
93 reg = core_readl(priv, CORE_SWITCH_CTRL);
94 reg |= MII_DUMB_FWDG_EN;
95 core_writel(priv, reg, CORE_SWITCH_CTRL);
97 /* Configure Traffic Class to QoS mapping, allow each priority to map
98 * to a different queue number
100 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
101 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
102 reg |= i << (PRT_TO_QID_SHIFT * i);
103 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
105 b53_brcm_hdr_setup(ds, port);
108 if (priv->type == BCM4908_DEVICE_ID ||
109 priv->type == BCM7445_DEVICE_ID)
110 offset = CORE_STS_OVERRIDE_IMP;
112 offset = CORE_STS_OVERRIDE_IMP2;
114 /* Force link status for IMP port */
115 reg = core_readl(priv, offset);
116 reg |= (MII_SW_OR | LINK_STS);
117 if (priv->type == BCM4908_DEVICE_ID)
118 reg |= GMII_SPEED_UP_2G;
120 reg &= ~GMII_SPEED_UP_2G;
121 core_writel(priv, reg, offset);
123 /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */
124 reg = core_readl(priv, CORE_IMP_CTL);
125 reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN);
126 reg &= ~(RX_DIS | TX_DIS);
127 core_writel(priv, reg, CORE_IMP_CTL);
129 reg = core_readl(priv, CORE_G_PCTL_PORT(port));
130 reg &= ~(RX_DIS | TX_DIS);
131 core_writel(priv, reg, CORE_G_PCTL_PORT(port));
134 priv->port_sts[port].enabled = true;
137 static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable)
139 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
142 reg = reg_readl(priv, REG_SPHY_CNTRL);
145 reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | IDDQ_GLOBAL_PWR | CK25_DIS);
146 reg_writel(priv, reg, REG_SPHY_CNTRL);
148 reg = reg_readl(priv, REG_SPHY_CNTRL);
151 reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET;
152 reg_writel(priv, reg, REG_SPHY_CNTRL);
156 reg_writel(priv, reg, REG_SPHY_CNTRL);
158 /* Use PHY-driven LED signaling */
160 reg = reg_readl(priv, REG_LED_CNTRL(0));
161 reg |= SPDLNK_SRC_SEL;
162 reg_writel(priv, reg, REG_LED_CNTRL(0));
166 static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv,
176 /* Port 0 interrupts are located on the first bank */
177 intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF));
180 off = P_IRQ_OFF(port);
184 intrl2_1_mask_clear(priv, P_IRQ_MASK(off));
187 static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv,
197 /* Port 0 interrupts are located on the first bank */
198 intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF));
199 intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR);
202 off = P_IRQ_OFF(port);
206 intrl2_1_mask_set(priv, P_IRQ_MASK(off));
207 intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR);
210 static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
211 struct phy_device *phy)
213 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
217 if (!dsa_is_user_port(ds, port))
220 priv->port_sts[port].enabled = true;
222 bcm_sf2_recalc_clock(ds);
224 /* Clear the memory power down */
225 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
226 reg &= ~P_TXQ_PSM_VDD(port);
227 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
229 /* Enable Broadcom tags for that port if requested */
230 if (priv->brcm_tag_mask & BIT(port))
231 b53_brcm_hdr_setup(ds, port);
233 /* Configure Traffic Class to QoS mapping, allow each priority to map
234 * to a different queue number
236 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
237 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
238 reg |= i << (PRT_TO_QID_SHIFT * i);
239 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
241 /* Re-enable the GPHY and re-apply workarounds */
242 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) {
243 bcm_sf2_gphy_enable_set(ds, true);
245 /* if phy_stop() has been called before, phy
246 * will be in halted state, and phy_start()
249 * the resume path does not configure back
250 * autoneg settings, and since we hard reset
251 * the phy manually here, we need to reset the
252 * state machine also.
254 phy->state = PHY_READY;
259 /* Enable MoCA port interrupts to get notified */
260 if (port == priv->moca_port)
261 bcm_sf2_port_intr_enable(priv, port);
263 /* Set per-queue pause threshold to 32 */
264 core_writel(priv, 32, CORE_TXQ_THD_PAUSE_QN_PORT(port));
266 /* Set ACB threshold to 24 */
267 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++) {
268 reg = acb_readl(priv, ACB_QUEUE_CFG(port *
269 SF2_NUM_EGRESS_QUEUES + i));
270 reg &= ~XOFF_THRESHOLD_MASK;
272 acb_writel(priv, reg, ACB_QUEUE_CFG(port *
273 SF2_NUM_EGRESS_QUEUES + i));
276 return b53_enable_port(ds, port, phy);
279 static void bcm_sf2_port_disable(struct dsa_switch *ds, int port)
281 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
284 /* Disable learning while in WoL mode */
285 if (priv->wol_ports_mask & (1 << port)) {
286 reg = core_readl(priv, CORE_DIS_LEARN);
288 core_writel(priv, reg, CORE_DIS_LEARN);
292 if (port == priv->moca_port)
293 bcm_sf2_port_intr_disable(priv, port);
295 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1)
296 bcm_sf2_gphy_enable_set(ds, false);
298 b53_disable_port(ds, port);
300 /* Power down the port memory */
301 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
302 reg |= P_TXQ_PSM_VDD(port);
303 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
305 priv->port_sts[port].enabled = false;
307 bcm_sf2_recalc_clock(ds);
311 static int bcm_sf2_sw_indir_rw(struct bcm_sf2_priv *priv, int op, int addr,
317 reg = reg_readl(priv, REG_SWITCH_CNTRL);
318 reg |= MDIO_MASTER_SEL;
319 reg_writel(priv, reg, REG_SWITCH_CNTRL);
321 /* Page << 8 | offset */
324 core_writel(priv, addr, reg);
326 /* Page << 8 | offset */
327 reg = 0x80 << 8 | regnum << 1;
331 ret = core_readl(priv, reg);
333 core_writel(priv, val, reg);
335 reg = reg_readl(priv, REG_SWITCH_CNTRL);
336 reg &= ~MDIO_MASTER_SEL;
337 reg_writel(priv, reg, REG_SWITCH_CNTRL);
342 static int bcm_sf2_sw_mdio_read(struct mii_bus *bus, int addr, int regnum)
344 struct bcm_sf2_priv *priv = bus->priv;
346 /* Intercept reads from Broadcom pseudo-PHY address, else, send
347 * them to our master MDIO bus controller
349 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
350 return bcm_sf2_sw_indir_rw(priv, 1, addr, regnum, 0);
352 return mdiobus_read_nested(priv->master_mii_bus, addr, regnum);
355 static int bcm_sf2_sw_mdio_write(struct mii_bus *bus, int addr, int regnum,
358 struct bcm_sf2_priv *priv = bus->priv;
360 /* Intercept writes to the Broadcom pseudo-PHY address, else,
361 * send them to our master MDIO bus controller
363 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
364 return bcm_sf2_sw_indir_rw(priv, 0, addr, regnum, val);
366 return mdiobus_write_nested(priv->master_mii_bus, addr,
370 static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id)
372 struct dsa_switch *ds = dev_id;
373 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
375 priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
377 intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR);
382 static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id)
384 struct dsa_switch *ds = dev_id;
385 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
387 priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
389 intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR);
391 if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF)) {
392 priv->port_sts[7].link = true;
393 dsa_port_phylink_mac_change(ds, 7, true);
395 if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF)) {
396 priv->port_sts[7].link = false;
397 dsa_port_phylink_mac_change(ds, 7, false);
403 static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv)
405 unsigned int timeout = 1000;
409 /* The watchdog reset does not work on 7278, we need to hit the
410 * "external" reset line through the reset controller.
412 if (priv->type == BCM7278_DEVICE_ID) {
413 ret = reset_control_assert(priv->rcdev);
417 return reset_control_deassert(priv->rcdev);
420 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
421 reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET;
422 core_writel(priv, reg, CORE_WATCHDOG_CTRL);
425 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
426 if (!(reg & SOFTWARE_RESET))
429 usleep_range(1000, 2000);
430 } while (timeout-- > 0);
438 static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
440 intrl2_0_mask_set(priv, 0xffffffff);
441 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
442 intrl2_1_mask_set(priv, 0xffffffff);
443 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
446 static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,
447 struct device_node *dn)
449 struct device_node *port;
450 unsigned int port_num;
451 struct property *prop;
452 phy_interface_t mode;
455 priv->moca_port = -1;
457 for_each_available_child_of_node(dn, port) {
458 if (of_property_read_u32(port, "reg", &port_num))
461 /* Internal PHYs get assigned a specific 'phy-mode' property
462 * value: "internal" to help flag them before MDIO probing
463 * has completed, since they might be turned off at that
466 err = of_get_phy_mode(port, &mode);
470 if (mode == PHY_INTERFACE_MODE_INTERNAL)
471 priv->int_phy_mask |= 1 << port_num;
473 if (mode == PHY_INTERFACE_MODE_MOCA)
474 priv->moca_port = port_num;
476 if (of_property_read_bool(port, "brcm,use-bcm-hdr"))
477 priv->brcm_tag_mask |= 1 << port_num;
479 /* Ensure that port 5 is not picked up as a DSA CPU port
480 * flavour but a regular port instead. We should be using
481 * devlink to be able to set the port flavour.
483 if (port_num == 5 && priv->type == BCM7278_DEVICE_ID) {
484 prop = of_find_property(port, "ethernet", NULL);
486 of_remove_property(port, prop);
491 static int bcm_sf2_mdio_register(struct dsa_switch *ds)
493 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
494 struct device_node *dn, *child;
495 struct phy_device *phydev;
496 struct property *prop;
500 /* Find our integrated MDIO bus node */
501 dn = of_find_compatible_node(NULL, NULL, "brcm,unimac-mdio");
502 priv->master_mii_bus = of_mdio_find_bus(dn);
503 if (!priv->master_mii_bus) {
505 return -EPROBE_DEFER;
508 get_device(&priv->master_mii_bus->dev);
509 priv->master_mii_dn = dn;
511 priv->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
512 if (!priv->slave_mii_bus) {
517 priv->slave_mii_bus->priv = priv;
518 priv->slave_mii_bus->name = "sf2 slave mii";
519 priv->slave_mii_bus->read = bcm_sf2_sw_mdio_read;
520 priv->slave_mii_bus->write = bcm_sf2_sw_mdio_write;
521 snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "sf2-%d",
523 priv->slave_mii_bus->dev.of_node = dn;
525 /* Include the pseudo-PHY address to divert reads towards our
526 * workaround. This is only required for 7445D0, since 7445E0
527 * disconnects the internal switch pseudo-PHY such that we can use the
528 * regular SWITCH_MDIO master controller instead.
530 * Here we flag the pseudo PHY as needing special treatment and would
531 * otherwise make all other PHY read/writes go to the master MDIO bus
532 * controller that comes with this switch backed by the "mdio-unimac"
535 if (of_machine_is_compatible("brcm,bcm7445d0"))
536 priv->indir_phy_mask |= (1 << BRCM_PSEUDO_PHY_ADDR) | (1 << 0);
538 priv->indir_phy_mask = 0;
540 ds->phys_mii_mask = priv->indir_phy_mask;
541 ds->slave_mii_bus = priv->slave_mii_bus;
542 priv->slave_mii_bus->parent = ds->dev->parent;
543 priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask;
545 /* We need to make sure that of_phy_connect() will not work by
546 * removing the 'phandle' and 'linux,phandle' properties and
547 * unregister the existing PHY device that was already registered.
549 for_each_available_child_of_node(dn, child) {
550 if (of_property_read_u32(child, "reg", ®) ||
554 if (!(priv->indir_phy_mask & BIT(reg)))
557 prop = of_find_property(child, "phandle", NULL);
559 of_remove_property(child, prop);
561 prop = of_find_property(child, "linux,phandle", NULL);
563 of_remove_property(child, prop);
565 phydev = of_phy_find_device(child);
567 phy_device_remove(phydev);
570 err = mdiobus_register(priv->slave_mii_bus);
577 static void bcm_sf2_mdio_unregister(struct bcm_sf2_priv *priv)
579 mdiobus_unregister(priv->slave_mii_bus);
580 of_node_put(priv->master_mii_dn);
583 static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port)
585 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
587 /* The BCM7xxx PHY driver expects to find the integrated PHY revision
588 * in bits 15:8 and the patch level in bits 7:0 which is exactly what
589 * the REG_PHY_REVISION register layout is.
591 if (priv->int_phy_mask & BIT(port))
592 return priv->hw_params.gphy_rev;
597 static void bcm_sf2_sw_validate(struct dsa_switch *ds, int port,
598 unsigned long *supported,
599 struct phylink_link_state *state)
601 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
602 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
604 if (!phy_interface_mode_is_rgmii(state->interface) &&
605 state->interface != PHY_INTERFACE_MODE_MII &&
606 state->interface != PHY_INTERFACE_MODE_REVMII &&
607 state->interface != PHY_INTERFACE_MODE_GMII &&
608 state->interface != PHY_INTERFACE_MODE_INTERNAL &&
609 state->interface != PHY_INTERFACE_MODE_MOCA) {
610 bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
611 if (port != core_readl(priv, CORE_IMP0_PRT_ID))
613 "Unsupported interface: %d for port %d\n",
614 state->interface, port);
618 /* Allow all the expected bits */
619 phylink_set(mask, Autoneg);
620 phylink_set_port_modes(mask);
621 phylink_set(mask, Pause);
622 phylink_set(mask, Asym_Pause);
624 /* With the exclusion of MII and Reverse MII, we support Gigabit,
625 * including Half duplex
627 if (state->interface != PHY_INTERFACE_MODE_MII &&
628 state->interface != PHY_INTERFACE_MODE_REVMII) {
629 phylink_set(mask, 1000baseT_Full);
630 phylink_set(mask, 1000baseT_Half);
633 phylink_set(mask, 10baseT_Half);
634 phylink_set(mask, 10baseT_Full);
635 phylink_set(mask, 100baseT_Half);
636 phylink_set(mask, 100baseT_Full);
638 bitmap_and(supported, supported, mask,
639 __ETHTOOL_LINK_MODE_MASK_NBITS);
640 bitmap_and(state->advertising, state->advertising, mask,
641 __ETHTOOL_LINK_MODE_MASK_NBITS);
644 static void bcm_sf2_sw_mac_config(struct dsa_switch *ds, int port,
646 const struct phylink_link_state *state)
648 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
649 u32 id_mode_dis = 0, port_mode;
652 if (port == core_readl(priv, CORE_IMP0_PRT_ID))
655 switch (state->interface) {
656 case PHY_INTERFACE_MODE_RGMII:
659 case PHY_INTERFACE_MODE_RGMII_TXID:
660 port_mode = EXT_GPHY;
662 case PHY_INTERFACE_MODE_MII:
663 port_mode = EXT_EPHY;
665 case PHY_INTERFACE_MODE_REVMII:
666 port_mode = EXT_REVMII;
669 /* Nothing required for all other PHYs: internal and MoCA */
673 /* Clear id_mode_dis bit, and the existing port mode, let
674 * RGMII_MODE_EN bet set by mac_link_{up,down}
676 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
678 reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT);
684 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
687 static void bcm_sf2_sw_mac_link_set(struct dsa_switch *ds, int port,
688 phy_interface_t interface, bool link)
690 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
693 if (!phy_interface_mode_is_rgmii(interface) &&
694 interface != PHY_INTERFACE_MODE_MII &&
695 interface != PHY_INTERFACE_MODE_REVMII)
698 /* If the link is down, just disable the interface to conserve power */
699 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
701 reg |= RGMII_MODE_EN;
703 reg &= ~RGMII_MODE_EN;
704 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
707 static void bcm_sf2_sw_mac_link_down(struct dsa_switch *ds, int port,
709 phy_interface_t interface)
711 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
714 if (port != core_readl(priv, CORE_IMP0_PRT_ID)) {
715 if (priv->type == BCM4908_DEVICE_ID ||
716 priv->type == BCM7445_DEVICE_ID)
717 offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
719 offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
721 reg = core_readl(priv, offset);
723 core_writel(priv, reg, offset);
726 bcm_sf2_sw_mac_link_set(ds, port, interface, false);
729 static void bcm_sf2_sw_mac_link_up(struct dsa_switch *ds, int port,
731 phy_interface_t interface,
732 struct phy_device *phydev,
733 int speed, int duplex,
734 bool tx_pause, bool rx_pause)
736 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
737 struct ethtool_eee *p = &priv->dev->ports[port].eee;
740 bcm_sf2_sw_mac_link_set(ds, port, interface, true);
742 if (port != core_readl(priv, CORE_IMP0_PRT_ID)) {
743 if (priv->type == BCM4908_DEVICE_ID ||
744 priv->type == BCM7445_DEVICE_ID)
745 offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
747 offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
749 if (interface == PHY_INTERFACE_MODE_RGMII ||
750 interface == PHY_INTERFACE_MODE_RGMII_TXID ||
751 interface == PHY_INTERFACE_MODE_MII ||
752 interface == PHY_INTERFACE_MODE_REVMII) {
753 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
754 reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN);
761 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
764 reg = SW_OVERRIDE | LINK_STS;
767 reg |= SPDSTS_1000 << SPEED_SHIFT;
770 reg |= SPDSTS_100 << SPEED_SHIFT;
774 if (duplex == DUPLEX_FULL)
777 core_writel(priv, reg, offset);
780 if (mode == MLO_AN_PHY && phydev)
781 p->eee_enabled = b53_eee_init(ds, port, phydev);
784 static void bcm_sf2_sw_fixed_state(struct dsa_switch *ds, int port,
785 struct phylink_link_state *status)
787 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
789 status->link = false;
791 /* MoCA port is special as we do not get link status from CORE_LNKSTS,
792 * which means that we need to force the link at the port override
793 * level to get the data to flow. We do use what the interrupt handler
794 * did determine before.
796 * For the other ports, we just force the link status, since this is
797 * a fixed PHY device.
799 if (port == priv->moca_port) {
800 status->link = priv->port_sts[port].link;
801 /* For MoCA interfaces, also force a link down notification
802 * since some version of the user-space daemon (mocad) use
803 * cmd->autoneg to force the link, which messes up the PHY
804 * state machine and make it go in PHY_FORCING state instead.
807 netif_carrier_off(dsa_to_port(ds, port)->slave);
808 status->duplex = DUPLEX_FULL;
814 static void bcm_sf2_enable_acb(struct dsa_switch *ds)
816 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
819 /* Enable ACB globally */
820 reg = acb_readl(priv, ACB_CONTROL);
821 reg |= (ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
822 acb_writel(priv, reg, ACB_CONTROL);
823 reg &= ~(ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
824 reg |= ACB_EN | ACB_ALGORITHM;
825 acb_writel(priv, reg, ACB_CONTROL);
828 static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
830 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
833 bcm_sf2_intr_disable(priv);
835 /* Disable all ports physically present including the IMP
836 * port, the other ones have already been disabled during
839 for (port = 0; port < ds->num_ports; port++) {
840 if (dsa_is_user_port(ds, port) || dsa_is_cpu_port(ds, port))
841 bcm_sf2_port_disable(ds, port);
844 if (!priv->wol_ports_mask)
845 clk_disable_unprepare(priv->clk);
850 static int bcm_sf2_sw_resume(struct dsa_switch *ds)
852 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
855 if (!priv->wol_ports_mask)
856 clk_prepare_enable(priv->clk);
858 ret = bcm_sf2_sw_rst(priv);
860 pr_err("%s: failed to software reset switch\n", __func__);
864 ret = bcm_sf2_cfp_resume(ds);
868 if (priv->hw_params.num_gphy == 1)
869 bcm_sf2_gphy_enable_set(ds, true);
876 static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
877 struct ethtool_wolinfo *wol)
879 struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
880 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
881 struct ethtool_wolinfo pwol = { };
883 /* Get the parent device WoL settings */
884 if (p->ethtool_ops->get_wol)
885 p->ethtool_ops->get_wol(p, &pwol);
887 /* Advertise the parent device supported settings */
888 wol->supported = pwol.supported;
889 memset(&wol->sopass, 0, sizeof(wol->sopass));
891 if (pwol.wolopts & WAKE_MAGICSECURE)
892 memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass));
894 if (priv->wol_ports_mask & (1 << port))
895 wol->wolopts = pwol.wolopts;
900 static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
901 struct ethtool_wolinfo *wol)
903 struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
904 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
905 s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
906 struct ethtool_wolinfo pwol = { };
908 if (p->ethtool_ops->get_wol)
909 p->ethtool_ops->get_wol(p, &pwol);
910 if (wol->wolopts & ~pwol.supported)
914 priv->wol_ports_mask |= (1 << port);
916 priv->wol_ports_mask &= ~(1 << port);
918 /* If we have at least one port enabled, make sure the CPU port
919 * is also enabled. If the CPU port is the last one enabled, we disable
920 * it since this configuration does not make sense.
922 if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port))
923 priv->wol_ports_mask |= (1 << cpu_port);
925 priv->wol_ports_mask &= ~(1 << cpu_port);
927 return p->ethtool_ops->set_wol(p, wol);
930 static int bcm_sf2_sw_setup(struct dsa_switch *ds)
932 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
935 /* Enable all valid ports and disable those unused */
936 for (port = 0; port < priv->hw_params.num_ports; port++) {
937 /* IMP port receives special treatment */
938 if (dsa_is_user_port(ds, port))
939 bcm_sf2_port_setup(ds, port, NULL);
940 else if (dsa_is_cpu_port(ds, port))
941 bcm_sf2_imp_setup(ds, port);
943 bcm_sf2_port_disable(ds, port);
946 b53_configure_vlan(ds);
947 bcm_sf2_enable_acb(ds);
949 return b53_setup_devlink_resources(ds);
952 static void bcm_sf2_sw_teardown(struct dsa_switch *ds)
954 dsa_devlink_resources_unregister(ds);
957 /* The SWITCH_CORE register space is managed by b53 but operates on a page +
958 * register basis so we need to translate that into an address that the
959 * bus-glue understands.
961 #define SF2_PAGE_REG_MKADDR(page, reg) ((page) << 10 | (reg) << 2)
963 static int bcm_sf2_core_read8(struct b53_device *dev, u8 page, u8 reg,
966 struct bcm_sf2_priv *priv = dev->priv;
968 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
973 static int bcm_sf2_core_read16(struct b53_device *dev, u8 page, u8 reg,
976 struct bcm_sf2_priv *priv = dev->priv;
978 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
983 static int bcm_sf2_core_read32(struct b53_device *dev, u8 page, u8 reg,
986 struct bcm_sf2_priv *priv = dev->priv;
988 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
993 static int bcm_sf2_core_read64(struct b53_device *dev, u8 page, u8 reg,
996 struct bcm_sf2_priv *priv = dev->priv;
998 *val = core_readq(priv, SF2_PAGE_REG_MKADDR(page, reg));
1003 static int bcm_sf2_core_write8(struct b53_device *dev, u8 page, u8 reg,
1006 struct bcm_sf2_priv *priv = dev->priv;
1008 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1013 static int bcm_sf2_core_write16(struct b53_device *dev, u8 page, u8 reg,
1016 struct bcm_sf2_priv *priv = dev->priv;
1018 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1023 static int bcm_sf2_core_write32(struct b53_device *dev, u8 page, u8 reg,
1026 struct bcm_sf2_priv *priv = dev->priv;
1028 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1033 static int bcm_sf2_core_write64(struct b53_device *dev, u8 page, u8 reg,
1036 struct bcm_sf2_priv *priv = dev->priv;
1038 core_writeq(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1043 static const struct b53_io_ops bcm_sf2_io_ops = {
1044 .read8 = bcm_sf2_core_read8,
1045 .read16 = bcm_sf2_core_read16,
1046 .read32 = bcm_sf2_core_read32,
1047 .read48 = bcm_sf2_core_read64,
1048 .read64 = bcm_sf2_core_read64,
1049 .write8 = bcm_sf2_core_write8,
1050 .write16 = bcm_sf2_core_write16,
1051 .write32 = bcm_sf2_core_write32,
1052 .write48 = bcm_sf2_core_write64,
1053 .write64 = bcm_sf2_core_write64,
1056 static void bcm_sf2_sw_get_strings(struct dsa_switch *ds, int port,
1057 u32 stringset, uint8_t *data)
1059 int cnt = b53_get_sset_count(ds, port, stringset);
1061 b53_get_strings(ds, port, stringset, data);
1062 bcm_sf2_cfp_get_strings(ds, port, stringset,
1063 data + cnt * ETH_GSTRING_LEN);
1066 static void bcm_sf2_sw_get_ethtool_stats(struct dsa_switch *ds, int port,
1069 int cnt = b53_get_sset_count(ds, port, ETH_SS_STATS);
1071 b53_get_ethtool_stats(ds, port, data);
1072 bcm_sf2_cfp_get_ethtool_stats(ds, port, data + cnt);
1075 static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds, int port,
1078 int cnt = b53_get_sset_count(ds, port, sset);
1083 cnt += bcm_sf2_cfp_get_sset_count(ds, port, sset);
1088 static const struct dsa_switch_ops bcm_sf2_ops = {
1089 .get_tag_protocol = b53_get_tag_protocol,
1090 .setup = bcm_sf2_sw_setup,
1091 .teardown = bcm_sf2_sw_teardown,
1092 .get_strings = bcm_sf2_sw_get_strings,
1093 .get_ethtool_stats = bcm_sf2_sw_get_ethtool_stats,
1094 .get_sset_count = bcm_sf2_sw_get_sset_count,
1095 .get_ethtool_phy_stats = b53_get_ethtool_phy_stats,
1096 .get_phy_flags = bcm_sf2_sw_get_phy_flags,
1097 .phylink_validate = bcm_sf2_sw_validate,
1098 .phylink_mac_config = bcm_sf2_sw_mac_config,
1099 .phylink_mac_link_down = bcm_sf2_sw_mac_link_down,
1100 .phylink_mac_link_up = bcm_sf2_sw_mac_link_up,
1101 .phylink_fixed_state = bcm_sf2_sw_fixed_state,
1102 .suspend = bcm_sf2_sw_suspend,
1103 .resume = bcm_sf2_sw_resume,
1104 .get_wol = bcm_sf2_sw_get_wol,
1105 .set_wol = bcm_sf2_sw_set_wol,
1106 .port_enable = bcm_sf2_port_setup,
1107 .port_disable = bcm_sf2_port_disable,
1108 .get_mac_eee = b53_get_mac_eee,
1109 .set_mac_eee = b53_set_mac_eee,
1110 .port_bridge_join = b53_br_join,
1111 .port_bridge_leave = b53_br_leave,
1112 .port_pre_bridge_flags = b53_br_flags_pre,
1113 .port_bridge_flags = b53_br_flags,
1114 .port_stp_state_set = b53_br_set_stp_state,
1115 .port_set_mrouter = b53_set_mrouter,
1116 .port_fast_age = b53_br_fast_age,
1117 .port_vlan_filtering = b53_vlan_filtering,
1118 .port_vlan_add = b53_vlan_add,
1119 .port_vlan_del = b53_vlan_del,
1120 .port_fdb_dump = b53_fdb_dump,
1121 .port_fdb_add = b53_fdb_add,
1122 .port_fdb_del = b53_fdb_del,
1123 .get_rxnfc = bcm_sf2_get_rxnfc,
1124 .set_rxnfc = bcm_sf2_set_rxnfc,
1125 .port_mirror_add = b53_mirror_add,
1126 .port_mirror_del = b53_mirror_del,
1127 .port_mdb_add = b53_mdb_add,
1128 .port_mdb_del = b53_mdb_del,
1131 struct bcm_sf2_of_data {
1133 const u16 *reg_offsets;
1134 unsigned int core_reg_align;
1135 unsigned int num_cfp_rules;
1138 static const u16 bcm_sf2_4908_reg_offsets[] = {
1139 [REG_SWITCH_CNTRL] = 0x00,
1140 [REG_SWITCH_STATUS] = 0x04,
1141 [REG_DIR_DATA_WRITE] = 0x08,
1142 [REG_DIR_DATA_READ] = 0x0c,
1143 [REG_SWITCH_REVISION] = 0x10,
1144 [REG_PHY_REVISION] = 0x14,
1145 [REG_SPHY_CNTRL] = 0x24,
1146 [REG_CROSSBAR] = 0xc8,
1147 [REG_RGMII_0_CNTRL] = 0xe0,
1148 [REG_RGMII_1_CNTRL] = 0xec,
1149 [REG_RGMII_2_CNTRL] = 0xf8,
1150 [REG_LED_0_CNTRL] = 0x40,
1151 [REG_LED_1_CNTRL] = 0x4c,
1152 [REG_LED_2_CNTRL] = 0x58,
1155 static const struct bcm_sf2_of_data bcm_sf2_4908_data = {
1156 .type = BCM4908_DEVICE_ID,
1157 .core_reg_align = 0,
1158 .reg_offsets = bcm_sf2_4908_reg_offsets,
1159 .num_cfp_rules = 0, /* FIXME */
1162 /* Register offsets for the SWITCH_REG_* block */
1163 static const u16 bcm_sf2_7445_reg_offsets[] = {
1164 [REG_SWITCH_CNTRL] = 0x00,
1165 [REG_SWITCH_STATUS] = 0x04,
1166 [REG_DIR_DATA_WRITE] = 0x08,
1167 [REG_DIR_DATA_READ] = 0x0C,
1168 [REG_SWITCH_REVISION] = 0x18,
1169 [REG_PHY_REVISION] = 0x1C,
1170 [REG_SPHY_CNTRL] = 0x2C,
1171 [REG_RGMII_0_CNTRL] = 0x34,
1172 [REG_RGMII_1_CNTRL] = 0x40,
1173 [REG_RGMII_2_CNTRL] = 0x4c,
1174 [REG_LED_0_CNTRL] = 0x90,
1175 [REG_LED_1_CNTRL] = 0x94,
1176 [REG_LED_2_CNTRL] = 0x98,
1179 static const struct bcm_sf2_of_data bcm_sf2_7445_data = {
1180 .type = BCM7445_DEVICE_ID,
1181 .core_reg_align = 0,
1182 .reg_offsets = bcm_sf2_7445_reg_offsets,
1183 .num_cfp_rules = 256,
1186 static const u16 bcm_sf2_7278_reg_offsets[] = {
1187 [REG_SWITCH_CNTRL] = 0x00,
1188 [REG_SWITCH_STATUS] = 0x04,
1189 [REG_DIR_DATA_WRITE] = 0x08,
1190 [REG_DIR_DATA_READ] = 0x0c,
1191 [REG_SWITCH_REVISION] = 0x10,
1192 [REG_PHY_REVISION] = 0x14,
1193 [REG_SPHY_CNTRL] = 0x24,
1194 [REG_RGMII_0_CNTRL] = 0xe0,
1195 [REG_RGMII_1_CNTRL] = 0xec,
1196 [REG_RGMII_2_CNTRL] = 0xf8,
1197 [REG_LED_0_CNTRL] = 0x40,
1198 [REG_LED_1_CNTRL] = 0x4c,
1199 [REG_LED_2_CNTRL] = 0x58,
1202 static const struct bcm_sf2_of_data bcm_sf2_7278_data = {
1203 .type = BCM7278_DEVICE_ID,
1204 .core_reg_align = 1,
1205 .reg_offsets = bcm_sf2_7278_reg_offsets,
1206 .num_cfp_rules = 128,
1209 static const struct of_device_id bcm_sf2_of_match[] = {
1210 { .compatible = "brcm,bcm4908-switch",
1211 .data = &bcm_sf2_4908_data
1213 { .compatible = "brcm,bcm7445-switch-v4.0",
1214 .data = &bcm_sf2_7445_data
1216 { .compatible = "brcm,bcm7278-switch-v4.0",
1217 .data = &bcm_sf2_7278_data
1219 { .compatible = "brcm,bcm7278-switch-v4.8",
1220 .data = &bcm_sf2_7278_data
1224 MODULE_DEVICE_TABLE(of, bcm_sf2_of_match);
1226 static int bcm_sf2_sw_probe(struct platform_device *pdev)
1228 const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
1229 struct device_node *dn = pdev->dev.of_node;
1230 const struct of_device_id *of_id = NULL;
1231 const struct bcm_sf2_of_data *data;
1232 struct b53_platform_data *pdata;
1233 struct dsa_switch_ops *ops;
1234 struct device_node *ports;
1235 struct bcm_sf2_priv *priv;
1236 struct b53_device *dev;
1237 struct dsa_switch *ds;
1238 void __iomem **base;
1243 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1247 ops = devm_kzalloc(&pdev->dev, sizeof(*ops), GFP_KERNEL);
1251 dev = b53_switch_alloc(&pdev->dev, &bcm_sf2_io_ops, priv);
1255 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1259 of_id = of_match_node(bcm_sf2_of_match, dn);
1260 if (!of_id || !of_id->data)
1265 /* Set SWITCH_REG register offsets and SWITCH_CORE align factor */
1266 priv->type = data->type;
1267 priv->reg_offsets = data->reg_offsets;
1268 priv->core_reg_align = data->core_reg_align;
1269 priv->num_cfp_rules = data->num_cfp_rules;
1271 priv->rcdev = devm_reset_control_get_optional_exclusive(&pdev->dev,
1273 if (IS_ERR(priv->rcdev))
1274 return PTR_ERR(priv->rcdev);
1276 /* Auto-detection using standard registers will not work, so
1277 * provide an indication of what kind of device we are for
1278 * b53_common to work with
1280 pdata->chip_id = priv->type;
1285 ds->ops = &bcm_sf2_ops;
1287 /* Advertise the 8 egress queues */
1288 ds->num_tx_queues = SF2_NUM_EGRESS_QUEUES;
1290 dev_set_drvdata(&pdev->dev, priv);
1292 spin_lock_init(&priv->indir_lock);
1293 mutex_init(&priv->cfp.lock);
1294 INIT_LIST_HEAD(&priv->cfp.rules_list);
1296 /* CFP rule #0 cannot be used for specific classifications, flag it as
1299 set_bit(0, priv->cfp.used);
1300 set_bit(0, priv->cfp.unique);
1302 /* Balance of_node_put() done by of_find_node_by_name() */
1304 ports = of_find_node_by_name(dn, "ports");
1306 bcm_sf2_identify_ports(priv, ports);
1310 priv->irq0 = irq_of_parse_and_map(dn, 0);
1311 priv->irq1 = irq_of_parse_and_map(dn, 1);
1314 for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
1315 *base = devm_platform_ioremap_resource(pdev, i);
1316 if (IS_ERR(*base)) {
1317 pr_err("unable to find register: %s\n", reg_names[i]);
1318 return PTR_ERR(*base);
1323 priv->clk = devm_clk_get_optional(&pdev->dev, "sw_switch");
1324 if (IS_ERR(priv->clk))
1325 return PTR_ERR(priv->clk);
1327 clk_prepare_enable(priv->clk);
1329 priv->clk_mdiv = devm_clk_get_optional(&pdev->dev, "sw_switch_mdiv");
1330 if (IS_ERR(priv->clk_mdiv)) {
1331 ret = PTR_ERR(priv->clk_mdiv);
1335 clk_prepare_enable(priv->clk_mdiv);
1337 ret = bcm_sf2_sw_rst(priv);
1339 pr_err("unable to software reset switch: %d\n", ret);
1343 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1345 ret = bcm_sf2_mdio_register(ds);
1347 pr_err("failed to register MDIO bus\n");
1351 bcm_sf2_gphy_enable_set(priv->dev->ds, false);
1353 ret = bcm_sf2_cfp_rst(priv);
1355 pr_err("failed to reset CFP\n");
1359 /* Disable all interrupts and request them */
1360 bcm_sf2_intr_disable(priv);
1362 ret = devm_request_irq(&pdev->dev, priv->irq0, bcm_sf2_switch_0_isr, 0,
1365 pr_err("failed to request switch_0 IRQ\n");
1369 ret = devm_request_irq(&pdev->dev, priv->irq1, bcm_sf2_switch_1_isr, 0,
1372 pr_err("failed to request switch_1 IRQ\n");
1376 /* Reset the MIB counters */
1377 reg = core_readl(priv, CORE_GMNCFGCFG);
1379 core_writel(priv, reg, CORE_GMNCFGCFG);
1380 reg &= ~RST_MIB_CNT;
1381 core_writel(priv, reg, CORE_GMNCFGCFG);
1383 /* Get the maximum number of ports for this switch */
1384 priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1;
1385 if (priv->hw_params.num_ports > DSA_MAX_PORTS)
1386 priv->hw_params.num_ports = DSA_MAX_PORTS;
1388 /* Assume a single GPHY setup if we can't read that property */
1389 if (of_property_read_u32(dn, "brcm,num-gphy",
1390 &priv->hw_params.num_gphy))
1391 priv->hw_params.num_gphy = 1;
1393 rev = reg_readl(priv, REG_SWITCH_REVISION);
1394 priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &
1395 SWITCH_TOP_REV_MASK;
1396 priv->hw_params.core_rev = (rev & SF2_REV_MASK);
1398 rev = reg_readl(priv, REG_PHY_REVISION);
1399 priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
1401 ret = b53_switch_register(dev);
1405 dev_info(&pdev->dev,
1406 "Starfighter 2 top: %x.%02x, core: %x.%02x, IRQs: %d, %d\n",
1407 priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
1408 priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
1409 priv->irq0, priv->irq1);
1414 bcm_sf2_mdio_unregister(priv);
1416 clk_disable_unprepare(priv->clk_mdiv);
1418 clk_disable_unprepare(priv->clk);
1422 static int bcm_sf2_sw_remove(struct platform_device *pdev)
1424 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1426 priv->wol_ports_mask = 0;
1427 /* Disable interrupts */
1428 bcm_sf2_intr_disable(priv);
1429 dsa_unregister_switch(priv->dev->ds);
1430 bcm_sf2_cfp_exit(priv->dev->ds);
1431 bcm_sf2_mdio_unregister(priv);
1432 clk_disable_unprepare(priv->clk_mdiv);
1433 clk_disable_unprepare(priv->clk);
1434 if (priv->type == BCM7278_DEVICE_ID)
1435 reset_control_assert(priv->rcdev);
1440 static void bcm_sf2_sw_shutdown(struct platform_device *pdev)
1442 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1444 /* For a kernel about to be kexec'd we want to keep the GPHY on for a
1445 * successful MDIO bus scan to occur. If we did turn off the GPHY
1446 * before (e.g: port_disable), this will also power it back on.
1448 * Do not rely on kexec_in_progress, just power the PHY on.
1450 if (priv->hw_params.num_gphy == 1)
1451 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1454 #ifdef CONFIG_PM_SLEEP
1455 static int bcm_sf2_suspend(struct device *dev)
1457 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1459 return dsa_switch_suspend(priv->dev->ds);
1462 static int bcm_sf2_resume(struct device *dev)
1464 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1466 return dsa_switch_resume(priv->dev->ds);
1468 #endif /* CONFIG_PM_SLEEP */
1470 static SIMPLE_DEV_PM_OPS(bcm_sf2_pm_ops,
1471 bcm_sf2_suspend, bcm_sf2_resume);
1474 static struct platform_driver bcm_sf2_driver = {
1475 .probe = bcm_sf2_sw_probe,
1476 .remove = bcm_sf2_sw_remove,
1477 .shutdown = bcm_sf2_sw_shutdown,
1480 .of_match_table = bcm_sf2_of_match,
1481 .pm = &bcm_sf2_pm_ops,
1484 module_platform_driver(bcm_sf2_driver);
1486 MODULE_AUTHOR("Broadcom Corporation");
1487 MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip");
1488 MODULE_LICENSE("GPL");
1489 MODULE_ALIAS("platform:brcm-sf2");