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 static u16 bcm_sf2_reg_rgmii_cntrl(struct bcm_sf2_priv *priv, int port)
38 case BCM4908_DEVICE_ID:
41 return REG_RGMII_11_CNTRL;
49 return REG_RGMII_0_CNTRL;
51 return REG_RGMII_1_CNTRL;
53 return REG_RGMII_2_CNTRL;
59 WARN_ONCE(1, "Unsupported port %d\n", port);
62 return REG_SWITCH_STATUS;
65 /* Return the number of active ports, not counting the IMP (CPU) port */
66 static unsigned int bcm_sf2_num_active_ports(struct dsa_switch *ds)
68 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
69 unsigned int port, count = 0;
71 for (port = 0; port < ARRAY_SIZE(priv->port_sts); port++) {
72 if (dsa_is_cpu_port(ds, port))
74 if (priv->port_sts[port].enabled)
81 static void bcm_sf2_recalc_clock(struct dsa_switch *ds)
83 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
84 unsigned long new_rate;
85 unsigned int ports_active;
86 /* Frequenty in Mhz */
87 static const unsigned long rate_table[] = {
94 ports_active = bcm_sf2_num_active_ports(ds);
95 if (ports_active == 0 || !priv->clk_mdiv)
98 /* If we overflow our table, just use the recommended operational
101 if (ports_active > ARRAY_SIZE(rate_table))
104 new_rate = rate_table[ports_active - 1];
105 clk_set_rate(priv->clk_mdiv, new_rate);
108 static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
110 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
114 /* Enable the port memories */
115 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
116 reg &= ~P_TXQ_PSM_VDD(port);
117 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
119 /* Enable forwarding */
120 core_writel(priv, SW_FWDG_EN, CORE_SWMODE);
122 /* Enable IMP port in dumb mode */
123 reg = core_readl(priv, CORE_SWITCH_CTRL);
124 reg |= MII_DUMB_FWDG_EN;
125 core_writel(priv, reg, CORE_SWITCH_CTRL);
127 /* Configure Traffic Class to QoS mapping, allow each priority to map
128 * to a different queue number
130 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
131 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
132 reg |= i << (PRT_TO_QID_SHIFT * i);
133 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
135 b53_brcm_hdr_setup(ds, port);
138 if (priv->type == BCM4908_DEVICE_ID ||
139 priv->type == BCM7445_DEVICE_ID)
140 offset = CORE_STS_OVERRIDE_IMP;
142 offset = CORE_STS_OVERRIDE_IMP2;
144 /* Force link status for IMP port */
145 reg = core_readl(priv, offset);
146 reg |= (MII_SW_OR | LINK_STS);
147 reg &= ~GMII_SPEED_UP_2G;
148 core_writel(priv, reg, offset);
150 /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */
151 reg = core_readl(priv, CORE_IMP_CTL);
152 reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN);
153 reg &= ~(RX_DIS | TX_DIS);
154 core_writel(priv, reg, CORE_IMP_CTL);
156 reg = core_readl(priv, CORE_G_PCTL_PORT(port));
157 reg &= ~(RX_DIS | TX_DIS);
158 core_writel(priv, reg, CORE_G_PCTL_PORT(port));
161 priv->port_sts[port].enabled = true;
164 static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable)
166 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
169 reg = reg_readl(priv, REG_SPHY_CNTRL);
172 reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | IDDQ_GLOBAL_PWR | CK25_DIS);
173 reg_writel(priv, reg, REG_SPHY_CNTRL);
175 reg = reg_readl(priv, REG_SPHY_CNTRL);
178 reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET;
179 reg_writel(priv, reg, REG_SPHY_CNTRL);
183 reg_writel(priv, reg, REG_SPHY_CNTRL);
185 /* Use PHY-driven LED signaling */
187 reg = reg_readl(priv, REG_LED_CNTRL(0));
188 reg |= SPDLNK_SRC_SEL;
189 reg_writel(priv, reg, REG_LED_CNTRL(0));
193 static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv,
203 /* Port 0 interrupts are located on the first bank */
204 intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF));
207 off = P_IRQ_OFF(port);
211 intrl2_1_mask_clear(priv, P_IRQ_MASK(off));
214 static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv,
224 /* Port 0 interrupts are located on the first bank */
225 intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF));
226 intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR);
229 off = P_IRQ_OFF(port);
233 intrl2_1_mask_set(priv, P_IRQ_MASK(off));
234 intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR);
237 static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
238 struct phy_device *phy)
240 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
244 if (!dsa_is_user_port(ds, port))
247 priv->port_sts[port].enabled = true;
249 bcm_sf2_recalc_clock(ds);
251 /* Clear the memory power down */
252 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
253 reg &= ~P_TXQ_PSM_VDD(port);
254 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
256 /* Enable Broadcom tags for that port if requested */
257 if (priv->brcm_tag_mask & BIT(port))
258 b53_brcm_hdr_setup(ds, port);
260 /* Configure Traffic Class to QoS mapping, allow each priority to map
261 * to a different queue number
263 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
264 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
265 reg |= i << (PRT_TO_QID_SHIFT * i);
266 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
268 /* Re-enable the GPHY and re-apply workarounds */
269 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) {
270 bcm_sf2_gphy_enable_set(ds, true);
272 /* if phy_stop() has been called before, phy
273 * will be in halted state, and phy_start()
276 * the resume path does not configure back
277 * autoneg settings, and since we hard reset
278 * the phy manually here, we need to reset the
279 * state machine also.
281 phy->state = PHY_READY;
286 /* Enable MoCA port interrupts to get notified */
287 if (port == priv->moca_port)
288 bcm_sf2_port_intr_enable(priv, port);
290 /* Set per-queue pause threshold to 32 */
291 core_writel(priv, 32, CORE_TXQ_THD_PAUSE_QN_PORT(port));
293 /* Set ACB threshold to 24 */
294 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++) {
295 reg = acb_readl(priv, ACB_QUEUE_CFG(port *
296 SF2_NUM_EGRESS_QUEUES + i));
297 reg &= ~XOFF_THRESHOLD_MASK;
299 acb_writel(priv, reg, ACB_QUEUE_CFG(port *
300 SF2_NUM_EGRESS_QUEUES + i));
303 return b53_enable_port(ds, port, phy);
306 static void bcm_sf2_port_disable(struct dsa_switch *ds, int port)
308 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
311 /* Disable learning while in WoL mode */
312 if (priv->wol_ports_mask & (1 << port)) {
313 reg = core_readl(priv, CORE_DIS_LEARN);
315 core_writel(priv, reg, CORE_DIS_LEARN);
319 if (port == priv->moca_port)
320 bcm_sf2_port_intr_disable(priv, port);
322 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1)
323 bcm_sf2_gphy_enable_set(ds, false);
325 b53_disable_port(ds, port);
327 /* Power down the port memory */
328 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
329 reg |= P_TXQ_PSM_VDD(port);
330 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
332 priv->port_sts[port].enabled = false;
334 bcm_sf2_recalc_clock(ds);
338 static int bcm_sf2_sw_indir_rw(struct bcm_sf2_priv *priv, int op, int addr,
344 reg = reg_readl(priv, REG_SWITCH_CNTRL);
345 reg |= MDIO_MASTER_SEL;
346 reg_writel(priv, reg, REG_SWITCH_CNTRL);
348 /* Page << 8 | offset */
351 core_writel(priv, addr, reg);
353 /* Page << 8 | offset */
354 reg = 0x80 << 8 | regnum << 1;
358 ret = core_readl(priv, reg);
360 core_writel(priv, val, reg);
362 reg = reg_readl(priv, REG_SWITCH_CNTRL);
363 reg &= ~MDIO_MASTER_SEL;
364 reg_writel(priv, reg, REG_SWITCH_CNTRL);
369 static int bcm_sf2_sw_mdio_read(struct mii_bus *bus, int addr, int regnum)
371 struct bcm_sf2_priv *priv = bus->priv;
373 /* Intercept reads from Broadcom pseudo-PHY address, else, send
374 * them to our master MDIO bus controller
376 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
377 return bcm_sf2_sw_indir_rw(priv, 1, addr, regnum, 0);
379 return mdiobus_read_nested(priv->master_mii_bus, addr, regnum);
382 static int bcm_sf2_sw_mdio_write(struct mii_bus *bus, int addr, int regnum,
385 struct bcm_sf2_priv *priv = bus->priv;
387 /* Intercept writes to the Broadcom pseudo-PHY address, else,
388 * send them to our master MDIO bus controller
390 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
391 return bcm_sf2_sw_indir_rw(priv, 0, addr, regnum, val);
393 return mdiobus_write_nested(priv->master_mii_bus, addr,
397 static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id)
399 struct dsa_switch *ds = dev_id;
400 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
402 priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
404 intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR);
409 static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id)
411 struct dsa_switch *ds = dev_id;
412 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
414 priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
416 intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR);
418 if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF)) {
419 priv->port_sts[7].link = true;
420 dsa_port_phylink_mac_change(ds, 7, true);
422 if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF)) {
423 priv->port_sts[7].link = false;
424 dsa_port_phylink_mac_change(ds, 7, false);
430 static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv)
432 unsigned int timeout = 1000;
436 /* The watchdog reset does not work on 7278, we need to hit the
437 * "external" reset line through the reset controller.
439 if (priv->type == BCM7278_DEVICE_ID) {
440 ret = reset_control_assert(priv->rcdev);
444 return reset_control_deassert(priv->rcdev);
447 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
448 reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET;
449 core_writel(priv, reg, CORE_WATCHDOG_CTRL);
452 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
453 if (!(reg & SOFTWARE_RESET))
456 usleep_range(1000, 2000);
457 } while (timeout-- > 0);
465 static void bcm_sf2_crossbar_setup(struct bcm_sf2_priv *priv)
467 struct device *dev = priv->dev->ds->dev;
473 mask = BIT(priv->num_crossbar_int_ports) - 1;
475 reg = reg_readl(priv, REG_CROSSBAR);
476 switch (priv->type) {
477 case BCM4908_DEVICE_ID:
478 shift = CROSSBAR_BCM4908_INT_P7 * priv->num_crossbar_int_ports;
479 reg &= ~(mask << shift);
481 reg |= CROSSBAR_BCM4908_EXT_SERDES << shift;
482 else if (priv->int_phy_mask & BIT(7))
483 reg |= CROSSBAR_BCM4908_EXT_GPHY4 << shift;
484 else if (phy_interface_mode_is_rgmii(priv->port_sts[7].mode))
485 reg |= CROSSBAR_BCM4908_EXT_RGMII << shift;
486 else if (WARN(1, "Invalid port mode\n"))
492 reg_writel(priv, reg, REG_CROSSBAR);
494 reg = reg_readl(priv, REG_CROSSBAR);
495 for (i = 0; i < priv->num_crossbar_int_ports; i++) {
496 shift = i * priv->num_crossbar_int_ports;
498 dev_dbg(dev, "crossbar int port #%d - ext port #%d\n", i,
499 (reg >> shift) & mask);
503 static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
505 intrl2_0_mask_set(priv, 0xffffffff);
506 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
507 intrl2_1_mask_set(priv, 0xffffffff);
508 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
511 static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,
512 struct device_node *dn)
514 struct device *dev = priv->dev->ds->dev;
515 struct bcm_sf2_port_status *port_st;
516 struct device_node *port;
517 unsigned int port_num;
518 struct property *prop;
521 priv->moca_port = -1;
523 for_each_available_child_of_node(dn, port) {
524 if (of_property_read_u32(port, "reg", &port_num))
527 if (port_num >= DSA_MAX_PORTS) {
528 dev_err(dev, "Invalid port number %d\n", port_num);
532 port_st = &priv->port_sts[port_num];
534 /* Internal PHYs get assigned a specific 'phy-mode' property
535 * value: "internal" to help flag them before MDIO probing
536 * has completed, since they might be turned off at that
539 err = of_get_phy_mode(port, &port_st->mode);
543 if (port_st->mode == PHY_INTERFACE_MODE_INTERNAL)
544 priv->int_phy_mask |= 1 << port_num;
546 if (port_st->mode == PHY_INTERFACE_MODE_MOCA)
547 priv->moca_port = port_num;
549 if (of_property_read_bool(port, "brcm,use-bcm-hdr"))
550 priv->brcm_tag_mask |= 1 << port_num;
552 /* Ensure that port 5 is not picked up as a DSA CPU port
553 * flavour but a regular port instead. We should be using
554 * devlink to be able to set the port flavour.
556 if (port_num == 5 && priv->type == BCM7278_DEVICE_ID) {
557 prop = of_find_property(port, "ethernet", NULL);
559 of_remove_property(port, prop);
564 static int bcm_sf2_mdio_register(struct dsa_switch *ds)
566 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
567 struct device_node *dn, *child;
568 struct phy_device *phydev;
569 struct property *prop;
573 /* Find our integrated MDIO bus node */
574 dn = of_find_compatible_node(NULL, NULL, "brcm,unimac-mdio");
575 priv->master_mii_bus = of_mdio_find_bus(dn);
576 if (!priv->master_mii_bus) {
578 return -EPROBE_DEFER;
581 get_device(&priv->master_mii_bus->dev);
582 priv->master_mii_dn = dn;
584 priv->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
585 if (!priv->slave_mii_bus) {
590 priv->slave_mii_bus->priv = priv;
591 priv->slave_mii_bus->name = "sf2 slave mii";
592 priv->slave_mii_bus->read = bcm_sf2_sw_mdio_read;
593 priv->slave_mii_bus->write = bcm_sf2_sw_mdio_write;
594 snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "sf2-%d",
596 priv->slave_mii_bus->dev.of_node = dn;
598 /* Include the pseudo-PHY address to divert reads towards our
599 * workaround. This is only required for 7445D0, since 7445E0
600 * disconnects the internal switch pseudo-PHY such that we can use the
601 * regular SWITCH_MDIO master controller instead.
603 * Here we flag the pseudo PHY as needing special treatment and would
604 * otherwise make all other PHY read/writes go to the master MDIO bus
605 * controller that comes with this switch backed by the "mdio-unimac"
608 if (of_machine_is_compatible("brcm,bcm7445d0"))
609 priv->indir_phy_mask |= (1 << BRCM_PSEUDO_PHY_ADDR) | (1 << 0);
611 priv->indir_phy_mask = 0;
613 ds->phys_mii_mask = priv->indir_phy_mask;
614 ds->slave_mii_bus = priv->slave_mii_bus;
615 priv->slave_mii_bus->parent = ds->dev->parent;
616 priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask;
618 /* We need to make sure that of_phy_connect() will not work by
619 * removing the 'phandle' and 'linux,phandle' properties and
620 * unregister the existing PHY device that was already registered.
622 for_each_available_child_of_node(dn, child) {
623 if (of_property_read_u32(child, "reg", ®) ||
627 if (!(priv->indir_phy_mask & BIT(reg)))
630 prop = of_find_property(child, "phandle", NULL);
632 of_remove_property(child, prop);
634 prop = of_find_property(child, "linux,phandle", NULL);
636 of_remove_property(child, prop);
638 phydev = of_phy_find_device(child);
640 phy_device_remove(phydev);
643 err = mdiobus_register(priv->slave_mii_bus);
650 static void bcm_sf2_mdio_unregister(struct bcm_sf2_priv *priv)
652 mdiobus_unregister(priv->slave_mii_bus);
653 of_node_put(priv->master_mii_dn);
656 static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port)
658 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
660 /* The BCM7xxx PHY driver expects to find the integrated PHY revision
661 * in bits 15:8 and the patch level in bits 7:0 which is exactly what
662 * the REG_PHY_REVISION register layout is.
665 return priv->hw_params.gphy_rev;
668 static void bcm_sf2_sw_validate(struct dsa_switch *ds, int port,
669 unsigned long *supported,
670 struct phylink_link_state *state)
672 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
673 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
675 if (!phy_interface_mode_is_rgmii(state->interface) &&
676 state->interface != PHY_INTERFACE_MODE_MII &&
677 state->interface != PHY_INTERFACE_MODE_REVMII &&
678 state->interface != PHY_INTERFACE_MODE_GMII &&
679 state->interface != PHY_INTERFACE_MODE_INTERNAL &&
680 state->interface != PHY_INTERFACE_MODE_MOCA) {
681 bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
682 if (port != core_readl(priv, CORE_IMP0_PRT_ID))
684 "Unsupported interface: %d for port %d\n",
685 state->interface, port);
689 /* Allow all the expected bits */
690 phylink_set(mask, Autoneg);
691 phylink_set_port_modes(mask);
692 phylink_set(mask, Pause);
693 phylink_set(mask, Asym_Pause);
695 /* With the exclusion of MII and Reverse MII, we support Gigabit,
696 * including Half duplex
698 if (state->interface != PHY_INTERFACE_MODE_MII &&
699 state->interface != PHY_INTERFACE_MODE_REVMII) {
700 phylink_set(mask, 1000baseT_Full);
701 phylink_set(mask, 1000baseT_Half);
704 phylink_set(mask, 10baseT_Half);
705 phylink_set(mask, 10baseT_Full);
706 phylink_set(mask, 100baseT_Half);
707 phylink_set(mask, 100baseT_Full);
709 bitmap_and(supported, supported, mask,
710 __ETHTOOL_LINK_MODE_MASK_NBITS);
711 bitmap_and(state->advertising, state->advertising, mask,
712 __ETHTOOL_LINK_MODE_MASK_NBITS);
715 static void bcm_sf2_sw_mac_config(struct dsa_switch *ds, int port,
717 const struct phylink_link_state *state)
719 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
720 u32 id_mode_dis = 0, port_mode;
724 if (port == core_readl(priv, CORE_IMP0_PRT_ID))
727 switch (state->interface) {
728 case PHY_INTERFACE_MODE_RGMII:
731 case PHY_INTERFACE_MODE_RGMII_TXID:
732 port_mode = EXT_GPHY;
734 case PHY_INTERFACE_MODE_MII:
735 port_mode = EXT_EPHY;
737 case PHY_INTERFACE_MODE_REVMII:
738 port_mode = EXT_REVMII;
741 /* Nothing required for all other PHYs: internal and MoCA */
745 reg_rgmii_ctrl = bcm_sf2_reg_rgmii_cntrl(priv, port);
747 /* Clear id_mode_dis bit, and the existing port mode, let
748 * RGMII_MODE_EN bet set by mac_link_{up,down}
750 reg = reg_readl(priv, reg_rgmii_ctrl);
752 reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT);
758 reg_writel(priv, reg, reg_rgmii_ctrl);
761 static void bcm_sf2_sw_mac_link_set(struct dsa_switch *ds, int port,
762 phy_interface_t interface, bool link)
764 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
768 if (!phy_interface_mode_is_rgmii(interface) &&
769 interface != PHY_INTERFACE_MODE_MII &&
770 interface != PHY_INTERFACE_MODE_REVMII)
773 reg_rgmii_ctrl = bcm_sf2_reg_rgmii_cntrl(priv, port);
775 /* If the link is down, just disable the interface to conserve power */
776 reg = reg_readl(priv, reg_rgmii_ctrl);
778 reg |= RGMII_MODE_EN;
780 reg &= ~RGMII_MODE_EN;
781 reg_writel(priv, reg, reg_rgmii_ctrl);
784 static void bcm_sf2_sw_mac_link_down(struct dsa_switch *ds, int port,
786 phy_interface_t interface)
788 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
791 if (port != core_readl(priv, CORE_IMP0_PRT_ID)) {
792 if (priv->type == BCM4908_DEVICE_ID ||
793 priv->type == BCM7445_DEVICE_ID)
794 offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
796 offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
798 reg = core_readl(priv, offset);
800 core_writel(priv, reg, offset);
803 bcm_sf2_sw_mac_link_set(ds, port, interface, false);
806 static void bcm_sf2_sw_mac_link_up(struct dsa_switch *ds, int port,
808 phy_interface_t interface,
809 struct phy_device *phydev,
810 int speed, int duplex,
811 bool tx_pause, bool rx_pause)
813 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
814 struct ethtool_eee *p = &priv->dev->ports[port].eee;
816 bcm_sf2_sw_mac_link_set(ds, port, interface, true);
818 if (port != core_readl(priv, CORE_IMP0_PRT_ID)) {
822 reg_rgmii_ctrl = bcm_sf2_reg_rgmii_cntrl(priv, port);
824 if (priv->type == BCM4908_DEVICE_ID ||
825 priv->type == BCM7445_DEVICE_ID)
826 offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
828 offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
830 if (interface == PHY_INTERFACE_MODE_RGMII ||
831 interface == PHY_INTERFACE_MODE_RGMII_TXID ||
832 interface == PHY_INTERFACE_MODE_MII ||
833 interface == PHY_INTERFACE_MODE_REVMII) {
834 reg = reg_readl(priv, reg_rgmii_ctrl);
835 reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN);
842 reg_writel(priv, reg, reg_rgmii_ctrl);
845 reg = SW_OVERRIDE | LINK_STS;
848 reg |= SPDSTS_1000 << SPEED_SHIFT;
851 reg |= SPDSTS_100 << SPEED_SHIFT;
855 if (duplex == DUPLEX_FULL)
858 core_writel(priv, reg, offset);
861 if (mode == MLO_AN_PHY && phydev)
862 p->eee_enabled = b53_eee_init(ds, port, phydev);
865 static void bcm_sf2_sw_fixed_state(struct dsa_switch *ds, int port,
866 struct phylink_link_state *status)
868 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
870 status->link = false;
872 /* MoCA port is special as we do not get link status from CORE_LNKSTS,
873 * which means that we need to force the link at the port override
874 * level to get the data to flow. We do use what the interrupt handler
875 * did determine before.
877 * For the other ports, we just force the link status, since this is
878 * a fixed PHY device.
880 if (port == priv->moca_port) {
881 status->link = priv->port_sts[port].link;
882 /* For MoCA interfaces, also force a link down notification
883 * since some version of the user-space daemon (mocad) use
884 * cmd->autoneg to force the link, which messes up the PHY
885 * state machine and make it go in PHY_FORCING state instead.
888 netif_carrier_off(dsa_to_port(ds, port)->slave);
889 status->duplex = DUPLEX_FULL;
895 static void bcm_sf2_enable_acb(struct dsa_switch *ds)
897 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
900 /* Enable ACB globally */
901 reg = acb_readl(priv, ACB_CONTROL);
902 reg |= (ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
903 acb_writel(priv, reg, ACB_CONTROL);
904 reg &= ~(ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
905 reg |= ACB_EN | ACB_ALGORITHM;
906 acb_writel(priv, reg, ACB_CONTROL);
909 static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
911 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
914 bcm_sf2_intr_disable(priv);
916 /* Disable all ports physically present including the IMP
917 * port, the other ones have already been disabled during
920 for (port = 0; port < ds->num_ports; port++) {
921 if (dsa_is_user_port(ds, port) || dsa_is_cpu_port(ds, port))
922 bcm_sf2_port_disable(ds, port);
925 if (!priv->wol_ports_mask)
926 clk_disable_unprepare(priv->clk);
931 static int bcm_sf2_sw_resume(struct dsa_switch *ds)
933 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
936 if (!priv->wol_ports_mask)
937 clk_prepare_enable(priv->clk);
939 ret = bcm_sf2_sw_rst(priv);
941 pr_err("%s: failed to software reset switch\n", __func__);
945 bcm_sf2_crossbar_setup(priv);
947 ret = bcm_sf2_cfp_resume(ds);
951 if (priv->hw_params.num_gphy == 1)
952 bcm_sf2_gphy_enable_set(ds, true);
959 static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
960 struct ethtool_wolinfo *wol)
962 struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
963 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
964 struct ethtool_wolinfo pwol = { };
966 /* Get the parent device WoL settings */
967 if (p->ethtool_ops->get_wol)
968 p->ethtool_ops->get_wol(p, &pwol);
970 /* Advertise the parent device supported settings */
971 wol->supported = pwol.supported;
972 memset(&wol->sopass, 0, sizeof(wol->sopass));
974 if (pwol.wolopts & WAKE_MAGICSECURE)
975 memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass));
977 if (priv->wol_ports_mask & (1 << port))
978 wol->wolopts = pwol.wolopts;
983 static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
984 struct ethtool_wolinfo *wol)
986 struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
987 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
988 s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
989 struct ethtool_wolinfo pwol = { };
991 if (p->ethtool_ops->get_wol)
992 p->ethtool_ops->get_wol(p, &pwol);
993 if (wol->wolopts & ~pwol.supported)
997 priv->wol_ports_mask |= (1 << port);
999 priv->wol_ports_mask &= ~(1 << port);
1001 /* If we have at least one port enabled, make sure the CPU port
1002 * is also enabled. If the CPU port is the last one enabled, we disable
1003 * it since this configuration does not make sense.
1005 if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port))
1006 priv->wol_ports_mask |= (1 << cpu_port);
1008 priv->wol_ports_mask &= ~(1 << cpu_port);
1010 return p->ethtool_ops->set_wol(p, wol);
1013 static int bcm_sf2_sw_setup(struct dsa_switch *ds)
1015 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
1018 /* Enable all valid ports and disable those unused */
1019 for (port = 0; port < priv->hw_params.num_ports; port++) {
1020 /* IMP port receives special treatment */
1021 if (dsa_is_user_port(ds, port))
1022 bcm_sf2_port_setup(ds, port, NULL);
1023 else if (dsa_is_cpu_port(ds, port))
1024 bcm_sf2_imp_setup(ds, port);
1026 bcm_sf2_port_disable(ds, port);
1029 b53_configure_vlan(ds);
1030 bcm_sf2_enable_acb(ds);
1032 return b53_setup_devlink_resources(ds);
1035 static void bcm_sf2_sw_teardown(struct dsa_switch *ds)
1037 dsa_devlink_resources_unregister(ds);
1040 /* The SWITCH_CORE register space is managed by b53 but operates on a page +
1041 * register basis so we need to translate that into an address that the
1042 * bus-glue understands.
1044 #define SF2_PAGE_REG_MKADDR(page, reg) ((page) << 10 | (reg) << 2)
1046 static int bcm_sf2_core_read8(struct b53_device *dev, u8 page, u8 reg,
1049 struct bcm_sf2_priv *priv = dev->priv;
1051 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
1056 static int bcm_sf2_core_read16(struct b53_device *dev, u8 page, u8 reg,
1059 struct bcm_sf2_priv *priv = dev->priv;
1061 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
1066 static int bcm_sf2_core_read32(struct b53_device *dev, u8 page, u8 reg,
1069 struct bcm_sf2_priv *priv = dev->priv;
1071 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
1076 static int bcm_sf2_core_read64(struct b53_device *dev, u8 page, u8 reg,
1079 struct bcm_sf2_priv *priv = dev->priv;
1081 *val = core_readq(priv, SF2_PAGE_REG_MKADDR(page, reg));
1086 static int bcm_sf2_core_write8(struct b53_device *dev, u8 page, u8 reg,
1089 struct bcm_sf2_priv *priv = dev->priv;
1091 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1096 static int bcm_sf2_core_write16(struct b53_device *dev, u8 page, u8 reg,
1099 struct bcm_sf2_priv *priv = dev->priv;
1101 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1106 static int bcm_sf2_core_write32(struct b53_device *dev, u8 page, u8 reg,
1109 struct bcm_sf2_priv *priv = dev->priv;
1111 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1116 static int bcm_sf2_core_write64(struct b53_device *dev, u8 page, u8 reg,
1119 struct bcm_sf2_priv *priv = dev->priv;
1121 core_writeq(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1126 static const struct b53_io_ops bcm_sf2_io_ops = {
1127 .read8 = bcm_sf2_core_read8,
1128 .read16 = bcm_sf2_core_read16,
1129 .read32 = bcm_sf2_core_read32,
1130 .read48 = bcm_sf2_core_read64,
1131 .read64 = bcm_sf2_core_read64,
1132 .write8 = bcm_sf2_core_write8,
1133 .write16 = bcm_sf2_core_write16,
1134 .write32 = bcm_sf2_core_write32,
1135 .write48 = bcm_sf2_core_write64,
1136 .write64 = bcm_sf2_core_write64,
1139 static void bcm_sf2_sw_get_strings(struct dsa_switch *ds, int port,
1140 u32 stringset, uint8_t *data)
1142 int cnt = b53_get_sset_count(ds, port, stringset);
1144 b53_get_strings(ds, port, stringset, data);
1145 bcm_sf2_cfp_get_strings(ds, port, stringset,
1146 data + cnt * ETH_GSTRING_LEN);
1149 static void bcm_sf2_sw_get_ethtool_stats(struct dsa_switch *ds, int port,
1152 int cnt = b53_get_sset_count(ds, port, ETH_SS_STATS);
1154 b53_get_ethtool_stats(ds, port, data);
1155 bcm_sf2_cfp_get_ethtool_stats(ds, port, data + cnt);
1158 static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds, int port,
1161 int cnt = b53_get_sset_count(ds, port, sset);
1166 cnt += bcm_sf2_cfp_get_sset_count(ds, port, sset);
1171 static const struct dsa_switch_ops bcm_sf2_ops = {
1172 .get_tag_protocol = b53_get_tag_protocol,
1173 .setup = bcm_sf2_sw_setup,
1174 .teardown = bcm_sf2_sw_teardown,
1175 .get_strings = bcm_sf2_sw_get_strings,
1176 .get_ethtool_stats = bcm_sf2_sw_get_ethtool_stats,
1177 .get_sset_count = bcm_sf2_sw_get_sset_count,
1178 .get_ethtool_phy_stats = b53_get_ethtool_phy_stats,
1179 .get_phy_flags = bcm_sf2_sw_get_phy_flags,
1180 .phylink_validate = bcm_sf2_sw_validate,
1181 .phylink_mac_config = bcm_sf2_sw_mac_config,
1182 .phylink_mac_link_down = bcm_sf2_sw_mac_link_down,
1183 .phylink_mac_link_up = bcm_sf2_sw_mac_link_up,
1184 .phylink_fixed_state = bcm_sf2_sw_fixed_state,
1185 .suspend = bcm_sf2_sw_suspend,
1186 .resume = bcm_sf2_sw_resume,
1187 .get_wol = bcm_sf2_sw_get_wol,
1188 .set_wol = bcm_sf2_sw_set_wol,
1189 .port_enable = bcm_sf2_port_setup,
1190 .port_disable = bcm_sf2_port_disable,
1191 .get_mac_eee = b53_get_mac_eee,
1192 .set_mac_eee = b53_set_mac_eee,
1193 .port_bridge_join = b53_br_join,
1194 .port_bridge_leave = b53_br_leave,
1195 .port_pre_bridge_flags = b53_br_flags_pre,
1196 .port_bridge_flags = b53_br_flags,
1197 .port_stp_state_set = b53_br_set_stp_state,
1198 .port_set_mrouter = b53_set_mrouter,
1199 .port_fast_age = b53_br_fast_age,
1200 .port_vlan_filtering = b53_vlan_filtering,
1201 .port_vlan_add = b53_vlan_add,
1202 .port_vlan_del = b53_vlan_del,
1203 .port_fdb_dump = b53_fdb_dump,
1204 .port_fdb_add = b53_fdb_add,
1205 .port_fdb_del = b53_fdb_del,
1206 .get_rxnfc = bcm_sf2_get_rxnfc,
1207 .set_rxnfc = bcm_sf2_set_rxnfc,
1208 .port_mirror_add = b53_mirror_add,
1209 .port_mirror_del = b53_mirror_del,
1210 .port_mdb_add = b53_mdb_add,
1211 .port_mdb_del = b53_mdb_del,
1214 struct bcm_sf2_of_data {
1216 const u16 *reg_offsets;
1217 unsigned int core_reg_align;
1218 unsigned int num_cfp_rules;
1219 unsigned int num_crossbar_int_ports;
1222 static const u16 bcm_sf2_4908_reg_offsets[] = {
1223 [REG_SWITCH_CNTRL] = 0x00,
1224 [REG_SWITCH_STATUS] = 0x04,
1225 [REG_DIR_DATA_WRITE] = 0x08,
1226 [REG_DIR_DATA_READ] = 0x0c,
1227 [REG_SWITCH_REVISION] = 0x10,
1228 [REG_PHY_REVISION] = 0x14,
1229 [REG_SPHY_CNTRL] = 0x24,
1230 [REG_CROSSBAR] = 0xc8,
1231 [REG_RGMII_11_CNTRL] = 0x014c,
1232 [REG_LED_0_CNTRL] = 0x40,
1233 [REG_LED_1_CNTRL] = 0x4c,
1234 [REG_LED_2_CNTRL] = 0x58,
1237 static const struct bcm_sf2_of_data bcm_sf2_4908_data = {
1238 .type = BCM4908_DEVICE_ID,
1239 .core_reg_align = 0,
1240 .reg_offsets = bcm_sf2_4908_reg_offsets,
1241 .num_cfp_rules = 256,
1242 .num_crossbar_int_ports = 2,
1245 /* Register offsets for the SWITCH_REG_* block */
1246 static const u16 bcm_sf2_7445_reg_offsets[] = {
1247 [REG_SWITCH_CNTRL] = 0x00,
1248 [REG_SWITCH_STATUS] = 0x04,
1249 [REG_DIR_DATA_WRITE] = 0x08,
1250 [REG_DIR_DATA_READ] = 0x0C,
1251 [REG_SWITCH_REVISION] = 0x18,
1252 [REG_PHY_REVISION] = 0x1C,
1253 [REG_SPHY_CNTRL] = 0x2C,
1254 [REG_RGMII_0_CNTRL] = 0x34,
1255 [REG_RGMII_1_CNTRL] = 0x40,
1256 [REG_RGMII_2_CNTRL] = 0x4c,
1257 [REG_LED_0_CNTRL] = 0x90,
1258 [REG_LED_1_CNTRL] = 0x94,
1259 [REG_LED_2_CNTRL] = 0x98,
1262 static const struct bcm_sf2_of_data bcm_sf2_7445_data = {
1263 .type = BCM7445_DEVICE_ID,
1264 .core_reg_align = 0,
1265 .reg_offsets = bcm_sf2_7445_reg_offsets,
1266 .num_cfp_rules = 256,
1269 static const u16 bcm_sf2_7278_reg_offsets[] = {
1270 [REG_SWITCH_CNTRL] = 0x00,
1271 [REG_SWITCH_STATUS] = 0x04,
1272 [REG_DIR_DATA_WRITE] = 0x08,
1273 [REG_DIR_DATA_READ] = 0x0c,
1274 [REG_SWITCH_REVISION] = 0x10,
1275 [REG_PHY_REVISION] = 0x14,
1276 [REG_SPHY_CNTRL] = 0x24,
1277 [REG_RGMII_0_CNTRL] = 0xe0,
1278 [REG_RGMII_1_CNTRL] = 0xec,
1279 [REG_RGMII_2_CNTRL] = 0xf8,
1280 [REG_LED_0_CNTRL] = 0x40,
1281 [REG_LED_1_CNTRL] = 0x4c,
1282 [REG_LED_2_CNTRL] = 0x58,
1285 static const struct bcm_sf2_of_data bcm_sf2_7278_data = {
1286 .type = BCM7278_DEVICE_ID,
1287 .core_reg_align = 1,
1288 .reg_offsets = bcm_sf2_7278_reg_offsets,
1289 .num_cfp_rules = 128,
1292 static const struct of_device_id bcm_sf2_of_match[] = {
1293 { .compatible = "brcm,bcm4908-switch",
1294 .data = &bcm_sf2_4908_data
1296 { .compatible = "brcm,bcm7445-switch-v4.0",
1297 .data = &bcm_sf2_7445_data
1299 { .compatible = "brcm,bcm7278-switch-v4.0",
1300 .data = &bcm_sf2_7278_data
1302 { .compatible = "brcm,bcm7278-switch-v4.8",
1303 .data = &bcm_sf2_7278_data
1307 MODULE_DEVICE_TABLE(of, bcm_sf2_of_match);
1309 static int bcm_sf2_sw_probe(struct platform_device *pdev)
1311 const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
1312 struct device_node *dn = pdev->dev.of_node;
1313 const struct of_device_id *of_id = NULL;
1314 const struct bcm_sf2_of_data *data;
1315 struct b53_platform_data *pdata;
1316 struct dsa_switch_ops *ops;
1317 struct device_node *ports;
1318 struct bcm_sf2_priv *priv;
1319 struct b53_device *dev;
1320 struct dsa_switch *ds;
1321 void __iomem **base;
1326 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1330 ops = devm_kzalloc(&pdev->dev, sizeof(*ops), GFP_KERNEL);
1334 dev = b53_switch_alloc(&pdev->dev, &bcm_sf2_io_ops, priv);
1338 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1342 of_id = of_match_node(bcm_sf2_of_match, dn);
1343 if (!of_id || !of_id->data)
1348 /* Set SWITCH_REG register offsets and SWITCH_CORE align factor */
1349 priv->type = data->type;
1350 priv->reg_offsets = data->reg_offsets;
1351 priv->core_reg_align = data->core_reg_align;
1352 priv->num_cfp_rules = data->num_cfp_rules;
1353 priv->num_crossbar_int_ports = data->num_crossbar_int_ports;
1355 priv->rcdev = devm_reset_control_get_optional_exclusive(&pdev->dev,
1357 if (IS_ERR(priv->rcdev))
1358 return PTR_ERR(priv->rcdev);
1360 /* Auto-detection using standard registers will not work, so
1361 * provide an indication of what kind of device we are for
1362 * b53_common to work with
1364 pdata->chip_id = priv->type;
1369 ds->ops = &bcm_sf2_ops;
1371 /* Advertise the 8 egress queues */
1372 ds->num_tx_queues = SF2_NUM_EGRESS_QUEUES;
1374 dev_set_drvdata(&pdev->dev, priv);
1376 spin_lock_init(&priv->indir_lock);
1377 mutex_init(&priv->cfp.lock);
1378 INIT_LIST_HEAD(&priv->cfp.rules_list);
1380 /* CFP rule #0 cannot be used for specific classifications, flag it as
1383 set_bit(0, priv->cfp.used);
1384 set_bit(0, priv->cfp.unique);
1386 /* Balance of_node_put() done by of_find_node_by_name() */
1388 ports = of_find_node_by_name(dn, "ports");
1390 bcm_sf2_identify_ports(priv, ports);
1394 priv->irq0 = irq_of_parse_and_map(dn, 0);
1395 priv->irq1 = irq_of_parse_and_map(dn, 1);
1398 for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
1399 *base = devm_platform_ioremap_resource(pdev, i);
1400 if (IS_ERR(*base)) {
1401 pr_err("unable to find register: %s\n", reg_names[i]);
1402 return PTR_ERR(*base);
1407 priv->clk = devm_clk_get_optional(&pdev->dev, "sw_switch");
1408 if (IS_ERR(priv->clk))
1409 return PTR_ERR(priv->clk);
1411 clk_prepare_enable(priv->clk);
1413 priv->clk_mdiv = devm_clk_get_optional(&pdev->dev, "sw_switch_mdiv");
1414 if (IS_ERR(priv->clk_mdiv)) {
1415 ret = PTR_ERR(priv->clk_mdiv);
1419 clk_prepare_enable(priv->clk_mdiv);
1421 ret = bcm_sf2_sw_rst(priv);
1423 pr_err("unable to software reset switch: %d\n", ret);
1427 bcm_sf2_crossbar_setup(priv);
1429 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1431 ret = bcm_sf2_mdio_register(ds);
1433 pr_err("failed to register MDIO bus\n");
1437 bcm_sf2_gphy_enable_set(priv->dev->ds, false);
1439 ret = bcm_sf2_cfp_rst(priv);
1441 pr_err("failed to reset CFP\n");
1445 /* Disable all interrupts and request them */
1446 bcm_sf2_intr_disable(priv);
1448 ret = devm_request_irq(&pdev->dev, priv->irq0, bcm_sf2_switch_0_isr, 0,
1451 pr_err("failed to request switch_0 IRQ\n");
1455 ret = devm_request_irq(&pdev->dev, priv->irq1, bcm_sf2_switch_1_isr, 0,
1458 pr_err("failed to request switch_1 IRQ\n");
1462 /* Reset the MIB counters */
1463 reg = core_readl(priv, CORE_GMNCFGCFG);
1465 core_writel(priv, reg, CORE_GMNCFGCFG);
1466 reg &= ~RST_MIB_CNT;
1467 core_writel(priv, reg, CORE_GMNCFGCFG);
1469 /* Get the maximum number of ports for this switch */
1470 priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1;
1471 if (priv->hw_params.num_ports > DSA_MAX_PORTS)
1472 priv->hw_params.num_ports = DSA_MAX_PORTS;
1474 /* Assume a single GPHY setup if we can't read that property */
1475 if (of_property_read_u32(dn, "brcm,num-gphy",
1476 &priv->hw_params.num_gphy))
1477 priv->hw_params.num_gphy = 1;
1479 rev = reg_readl(priv, REG_SWITCH_REVISION);
1480 priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &
1481 SWITCH_TOP_REV_MASK;
1482 priv->hw_params.core_rev = (rev & SF2_REV_MASK);
1484 rev = reg_readl(priv, REG_PHY_REVISION);
1485 priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
1487 ret = b53_switch_register(dev);
1491 dev_info(&pdev->dev,
1492 "Starfighter 2 top: %x.%02x, core: %x.%02x, IRQs: %d, %d\n",
1493 priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
1494 priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
1495 priv->irq0, priv->irq1);
1500 bcm_sf2_mdio_unregister(priv);
1502 clk_disable_unprepare(priv->clk_mdiv);
1504 clk_disable_unprepare(priv->clk);
1508 static int bcm_sf2_sw_remove(struct platform_device *pdev)
1510 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1512 priv->wol_ports_mask = 0;
1513 /* Disable interrupts */
1514 bcm_sf2_intr_disable(priv);
1515 dsa_unregister_switch(priv->dev->ds);
1516 bcm_sf2_cfp_exit(priv->dev->ds);
1517 bcm_sf2_mdio_unregister(priv);
1518 clk_disable_unprepare(priv->clk_mdiv);
1519 clk_disable_unprepare(priv->clk);
1520 if (priv->type == BCM7278_DEVICE_ID)
1521 reset_control_assert(priv->rcdev);
1526 static void bcm_sf2_sw_shutdown(struct platform_device *pdev)
1528 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1530 /* For a kernel about to be kexec'd we want to keep the GPHY on for a
1531 * successful MDIO bus scan to occur. If we did turn off the GPHY
1532 * before (e.g: port_disable), this will also power it back on.
1534 * Do not rely on kexec_in_progress, just power the PHY on.
1536 if (priv->hw_params.num_gphy == 1)
1537 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1540 #ifdef CONFIG_PM_SLEEP
1541 static int bcm_sf2_suspend(struct device *dev)
1543 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1545 return dsa_switch_suspend(priv->dev->ds);
1548 static int bcm_sf2_resume(struct device *dev)
1550 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1552 return dsa_switch_resume(priv->dev->ds);
1554 #endif /* CONFIG_PM_SLEEP */
1556 static SIMPLE_DEV_PM_OPS(bcm_sf2_pm_ops,
1557 bcm_sf2_suspend, bcm_sf2_resume);
1560 static struct platform_driver bcm_sf2_driver = {
1561 .probe = bcm_sf2_sw_probe,
1562 .remove = bcm_sf2_sw_remove,
1563 .shutdown = bcm_sf2_sw_shutdown,
1566 .of_match_table = bcm_sf2_of_match,
1567 .pm = &bcm_sf2_pm_ops,
1570 module_platform_driver(bcm_sf2_driver);
1572 MODULE_AUTHOR("Broadcom Corporation");
1573 MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip");
1574 MODULE_LICENSE("GPL");
1575 MODULE_ALIAS("platform:brcm-sf2");