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 reg &= ~GMII_SPEED_UP_2G;
118 core_writel(priv, reg, offset);
120 /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */
121 reg = core_readl(priv, CORE_IMP_CTL);
122 reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN);
123 reg &= ~(RX_DIS | TX_DIS);
124 core_writel(priv, reg, CORE_IMP_CTL);
126 reg = core_readl(priv, CORE_G_PCTL_PORT(port));
127 reg &= ~(RX_DIS | TX_DIS);
128 core_writel(priv, reg, CORE_G_PCTL_PORT(port));
131 priv->port_sts[port].enabled = true;
134 static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable)
136 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
139 reg = reg_readl(priv, REG_SPHY_CNTRL);
142 reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | IDDQ_GLOBAL_PWR | CK25_DIS);
143 reg_writel(priv, reg, REG_SPHY_CNTRL);
145 reg = reg_readl(priv, REG_SPHY_CNTRL);
148 reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET;
149 reg_writel(priv, reg, REG_SPHY_CNTRL);
153 reg_writel(priv, reg, REG_SPHY_CNTRL);
155 /* Use PHY-driven LED signaling */
157 reg = reg_readl(priv, REG_LED_CNTRL(0));
158 reg |= SPDLNK_SRC_SEL;
159 reg_writel(priv, reg, REG_LED_CNTRL(0));
163 static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv,
173 /* Port 0 interrupts are located on the first bank */
174 intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF));
177 off = P_IRQ_OFF(port);
181 intrl2_1_mask_clear(priv, P_IRQ_MASK(off));
184 static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv,
194 /* Port 0 interrupts are located on the first bank */
195 intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF));
196 intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR);
199 off = P_IRQ_OFF(port);
203 intrl2_1_mask_set(priv, P_IRQ_MASK(off));
204 intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR);
207 static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
208 struct phy_device *phy)
210 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
214 if (!dsa_is_user_port(ds, port))
217 priv->port_sts[port].enabled = true;
219 bcm_sf2_recalc_clock(ds);
221 /* Clear the memory power down */
222 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
223 reg &= ~P_TXQ_PSM_VDD(port);
224 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
226 /* Enable learning */
227 reg = core_readl(priv, CORE_DIS_LEARN);
229 core_writel(priv, reg, CORE_DIS_LEARN);
231 /* Enable Broadcom tags for that port if requested */
232 if (priv->brcm_tag_mask & BIT(port)) {
233 b53_brcm_hdr_setup(ds, port);
235 /* Disable learning on ASP port */
237 reg = core_readl(priv, CORE_DIS_LEARN);
239 core_writel(priv, reg, CORE_DIS_LEARN);
243 /* Configure Traffic Class to QoS mapping, allow each priority to map
244 * to a different queue number
246 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
247 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
248 reg |= i << (PRT_TO_QID_SHIFT * i);
249 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
251 /* Re-enable the GPHY and re-apply workarounds */
252 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) {
253 bcm_sf2_gphy_enable_set(ds, true);
255 /* if phy_stop() has been called before, phy
256 * will be in halted state, and phy_start()
259 * the resume path does not configure back
260 * autoneg settings, and since we hard reset
261 * the phy manually here, we need to reset the
262 * state machine also.
264 phy->state = PHY_READY;
269 /* Enable MoCA port interrupts to get notified */
270 if (port == priv->moca_port)
271 bcm_sf2_port_intr_enable(priv, port);
273 /* Set per-queue pause threshold to 32 */
274 core_writel(priv, 32, CORE_TXQ_THD_PAUSE_QN_PORT(port));
276 /* Set ACB threshold to 24 */
277 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++) {
278 reg = acb_readl(priv, ACB_QUEUE_CFG(port *
279 SF2_NUM_EGRESS_QUEUES + i));
280 reg &= ~XOFF_THRESHOLD_MASK;
282 acb_writel(priv, reg, ACB_QUEUE_CFG(port *
283 SF2_NUM_EGRESS_QUEUES + i));
286 return b53_enable_port(ds, port, phy);
289 static void bcm_sf2_port_disable(struct dsa_switch *ds, int port)
291 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
294 /* Disable learning while in WoL mode */
295 if (priv->wol_ports_mask & (1 << port)) {
296 reg = core_readl(priv, CORE_DIS_LEARN);
298 core_writel(priv, reg, CORE_DIS_LEARN);
302 if (port == priv->moca_port)
303 bcm_sf2_port_intr_disable(priv, port);
305 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1)
306 bcm_sf2_gphy_enable_set(ds, false);
308 b53_disable_port(ds, port);
310 /* Power down the port memory */
311 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
312 reg |= P_TXQ_PSM_VDD(port);
313 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
315 priv->port_sts[port].enabled = false;
317 bcm_sf2_recalc_clock(ds);
321 static int bcm_sf2_sw_indir_rw(struct bcm_sf2_priv *priv, int op, int addr,
327 reg = reg_readl(priv, REG_SWITCH_CNTRL);
328 reg |= MDIO_MASTER_SEL;
329 reg_writel(priv, reg, REG_SWITCH_CNTRL);
331 /* Page << 8 | offset */
334 core_writel(priv, addr, reg);
336 /* Page << 8 | offset */
337 reg = 0x80 << 8 | regnum << 1;
341 ret = core_readl(priv, reg);
343 core_writel(priv, val, reg);
345 reg = reg_readl(priv, REG_SWITCH_CNTRL);
346 reg &= ~MDIO_MASTER_SEL;
347 reg_writel(priv, reg, REG_SWITCH_CNTRL);
352 static int bcm_sf2_sw_mdio_read(struct mii_bus *bus, int addr, int regnum)
354 struct bcm_sf2_priv *priv = bus->priv;
356 /* Intercept reads from Broadcom pseudo-PHY address, else, send
357 * them to our master MDIO bus controller
359 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
360 return bcm_sf2_sw_indir_rw(priv, 1, addr, regnum, 0);
362 return mdiobus_read_nested(priv->master_mii_bus, addr, regnum);
365 static int bcm_sf2_sw_mdio_write(struct mii_bus *bus, int addr, int regnum,
368 struct bcm_sf2_priv *priv = bus->priv;
370 /* Intercept writes to the Broadcom pseudo-PHY address, else,
371 * send them to our master MDIO bus controller
373 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
374 return bcm_sf2_sw_indir_rw(priv, 0, addr, regnum, val);
376 return mdiobus_write_nested(priv->master_mii_bus, addr,
380 static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id)
382 struct dsa_switch *ds = dev_id;
383 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
385 priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
387 intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR);
392 static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id)
394 struct dsa_switch *ds = dev_id;
395 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
397 priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
399 intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR);
401 if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF)) {
402 priv->port_sts[7].link = true;
403 dsa_port_phylink_mac_change(ds, 7, true);
405 if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF)) {
406 priv->port_sts[7].link = false;
407 dsa_port_phylink_mac_change(ds, 7, false);
413 static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv)
415 unsigned int timeout = 1000;
419 /* The watchdog reset does not work on 7278, we need to hit the
420 * "external" reset line through the reset controller.
422 if (priv->type == BCM7278_DEVICE_ID && !IS_ERR(priv->rcdev)) {
423 ret = reset_control_assert(priv->rcdev);
427 return reset_control_deassert(priv->rcdev);
430 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
431 reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET;
432 core_writel(priv, reg, CORE_WATCHDOG_CTRL);
435 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
436 if (!(reg & SOFTWARE_RESET))
439 usleep_range(1000, 2000);
440 } while (timeout-- > 0);
448 static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
450 intrl2_0_mask_set(priv, 0xffffffff);
451 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
452 intrl2_1_mask_set(priv, 0xffffffff);
453 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
456 static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,
457 struct device_node *dn)
459 struct device_node *port;
460 unsigned int port_num;
461 struct property *prop;
462 phy_interface_t mode;
465 priv->moca_port = -1;
467 for_each_available_child_of_node(dn, port) {
468 if (of_property_read_u32(port, "reg", &port_num))
471 /* Internal PHYs get assigned a specific 'phy-mode' property
472 * value: "internal" to help flag them before MDIO probing
473 * has completed, since they might be turned off at that
476 err = of_get_phy_mode(port, &mode);
480 if (mode == PHY_INTERFACE_MODE_INTERNAL)
481 priv->int_phy_mask |= 1 << port_num;
483 if (mode == PHY_INTERFACE_MODE_MOCA)
484 priv->moca_port = port_num;
486 if (of_property_read_bool(port, "brcm,use-bcm-hdr"))
487 priv->brcm_tag_mask |= 1 << port_num;
489 /* Ensure that port 5 is not picked up as a DSA CPU port
490 * flavour but a regular port instead. We should be using
491 * devlink to be able to set the port flavour.
493 if (port_num == 5 && priv->type == BCM7278_DEVICE_ID) {
494 prop = of_find_property(port, "ethernet", NULL);
496 of_remove_property(port, prop);
501 static int bcm_sf2_mdio_register(struct dsa_switch *ds)
503 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
504 struct device_node *dn, *child;
505 struct phy_device *phydev;
506 struct property *prop;
510 /* Find our integrated MDIO bus node */
511 dn = of_find_compatible_node(NULL, NULL, "brcm,unimac-mdio");
512 priv->master_mii_bus = of_mdio_find_bus(dn);
513 if (!priv->master_mii_bus)
514 return -EPROBE_DEFER;
516 get_device(&priv->master_mii_bus->dev);
517 priv->master_mii_dn = dn;
519 priv->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
520 if (!priv->slave_mii_bus)
523 priv->slave_mii_bus->priv = priv;
524 priv->slave_mii_bus->name = "sf2 slave mii";
525 priv->slave_mii_bus->read = bcm_sf2_sw_mdio_read;
526 priv->slave_mii_bus->write = bcm_sf2_sw_mdio_write;
527 snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "sf2-%d",
529 priv->slave_mii_bus->dev.of_node = dn;
531 /* Include the pseudo-PHY address to divert reads towards our
532 * workaround. This is only required for 7445D0, since 7445E0
533 * disconnects the internal switch pseudo-PHY such that we can use the
534 * regular SWITCH_MDIO master controller instead.
536 * Here we flag the pseudo PHY as needing special treatment and would
537 * otherwise make all other PHY read/writes go to the master MDIO bus
538 * controller that comes with this switch backed by the "mdio-unimac"
541 if (of_machine_is_compatible("brcm,bcm7445d0"))
542 priv->indir_phy_mask |= (1 << BRCM_PSEUDO_PHY_ADDR) | (1 << 0);
544 priv->indir_phy_mask = 0;
546 ds->phys_mii_mask = priv->indir_phy_mask;
547 ds->slave_mii_bus = priv->slave_mii_bus;
548 priv->slave_mii_bus->parent = ds->dev->parent;
549 priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask;
551 /* We need to make sure that of_phy_connect() will not work by
552 * removing the 'phandle' and 'linux,phandle' properties and
553 * unregister the existing PHY device that was already registered.
555 for_each_available_child_of_node(dn, child) {
556 if (of_property_read_u32(child, "reg", ®) ||
560 if (!(priv->indir_phy_mask & BIT(reg)))
563 prop = of_find_property(child, "phandle", NULL);
565 of_remove_property(child, prop);
567 prop = of_find_property(child, "linux,phandle", NULL);
569 of_remove_property(child, prop);
571 phydev = of_phy_find_device(child);
573 phy_device_remove(phydev);
576 err = mdiobus_register(priv->slave_mii_bus);
583 static void bcm_sf2_mdio_unregister(struct bcm_sf2_priv *priv)
585 mdiobus_unregister(priv->slave_mii_bus);
586 of_node_put(priv->master_mii_dn);
589 static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port)
591 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
593 /* The BCM7xxx PHY driver expects to find the integrated PHY revision
594 * in bits 15:8 and the patch level in bits 7:0 which is exactly what
595 * the REG_PHY_REVISION register layout is.
598 return priv->hw_params.gphy_rev;
601 static void bcm_sf2_sw_validate(struct dsa_switch *ds, int port,
602 unsigned long *supported,
603 struct phylink_link_state *state)
605 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
606 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
608 if (!phy_interface_mode_is_rgmii(state->interface) &&
609 state->interface != PHY_INTERFACE_MODE_MII &&
610 state->interface != PHY_INTERFACE_MODE_REVMII &&
611 state->interface != PHY_INTERFACE_MODE_GMII &&
612 state->interface != PHY_INTERFACE_MODE_INTERNAL &&
613 state->interface != PHY_INTERFACE_MODE_MOCA) {
614 bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
615 if (port != core_readl(priv, CORE_IMP0_PRT_ID))
617 "Unsupported interface: %d for port %d\n",
618 state->interface, port);
622 /* Allow all the expected bits */
623 phylink_set(mask, Autoneg);
624 phylink_set_port_modes(mask);
625 phylink_set(mask, Pause);
626 phylink_set(mask, Asym_Pause);
628 /* With the exclusion of MII and Reverse MII, we support Gigabit,
629 * including Half duplex
631 if (state->interface != PHY_INTERFACE_MODE_MII &&
632 state->interface != PHY_INTERFACE_MODE_REVMII) {
633 phylink_set(mask, 1000baseT_Full);
634 phylink_set(mask, 1000baseT_Half);
637 phylink_set(mask, 10baseT_Half);
638 phylink_set(mask, 10baseT_Full);
639 phylink_set(mask, 100baseT_Half);
640 phylink_set(mask, 100baseT_Full);
642 bitmap_and(supported, supported, mask,
643 __ETHTOOL_LINK_MODE_MASK_NBITS);
644 bitmap_and(state->advertising, state->advertising, mask,
645 __ETHTOOL_LINK_MODE_MASK_NBITS);
648 static void bcm_sf2_sw_mac_config(struct dsa_switch *ds, int port,
650 const struct phylink_link_state *state)
652 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
653 u32 id_mode_dis = 0, port_mode;
656 if (port == core_readl(priv, CORE_IMP0_PRT_ID))
659 switch (state->interface) {
660 case PHY_INTERFACE_MODE_RGMII:
663 case PHY_INTERFACE_MODE_RGMII_TXID:
664 port_mode = EXT_GPHY;
666 case PHY_INTERFACE_MODE_MII:
667 port_mode = EXT_EPHY;
669 case PHY_INTERFACE_MODE_REVMII:
670 port_mode = EXT_REVMII;
673 /* Nothing required for all other PHYs: internal and MoCA */
677 /* Clear id_mode_dis bit, and the existing port mode, let
678 * RGMII_MODE_EN bet set by mac_link_{up,down}
680 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
682 reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT);
688 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
691 static void bcm_sf2_sw_mac_link_set(struct dsa_switch *ds, int port,
692 phy_interface_t interface, bool link)
694 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
697 if (!phy_interface_mode_is_rgmii(interface) &&
698 interface != PHY_INTERFACE_MODE_MII &&
699 interface != PHY_INTERFACE_MODE_REVMII)
702 /* If the link is down, just disable the interface to conserve power */
703 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
705 reg |= RGMII_MODE_EN;
707 reg &= ~RGMII_MODE_EN;
708 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
711 static void bcm_sf2_sw_mac_link_down(struct dsa_switch *ds, int port,
713 phy_interface_t interface)
715 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
718 if (port != core_readl(priv, CORE_IMP0_PRT_ID)) {
719 if (priv->type == BCM4908_DEVICE_ID ||
720 priv->type == BCM7445_DEVICE_ID)
721 offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
723 offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
725 reg = core_readl(priv, offset);
727 core_writel(priv, reg, offset);
730 bcm_sf2_sw_mac_link_set(ds, port, interface, false);
733 static void bcm_sf2_sw_mac_link_up(struct dsa_switch *ds, int port,
735 phy_interface_t interface,
736 struct phy_device *phydev,
737 int speed, int duplex,
738 bool tx_pause, bool rx_pause)
740 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
741 struct ethtool_eee *p = &priv->dev->ports[port].eee;
744 bcm_sf2_sw_mac_link_set(ds, port, interface, true);
746 if (port != core_readl(priv, CORE_IMP0_PRT_ID)) {
747 if (priv->type == BCM4908_DEVICE_ID ||
748 priv->type == BCM7445_DEVICE_ID)
749 offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
751 offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
753 if (interface == PHY_INTERFACE_MODE_RGMII ||
754 interface == PHY_INTERFACE_MODE_RGMII_TXID ||
755 interface == PHY_INTERFACE_MODE_MII ||
756 interface == PHY_INTERFACE_MODE_REVMII) {
757 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
758 reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN);
765 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
768 reg = SW_OVERRIDE | LINK_STS;
771 reg |= SPDSTS_1000 << SPEED_SHIFT;
774 reg |= SPDSTS_100 << SPEED_SHIFT;
778 if (duplex == DUPLEX_FULL)
781 core_writel(priv, reg, offset);
784 if (mode == MLO_AN_PHY && phydev)
785 p->eee_enabled = b53_eee_init(ds, port, phydev);
788 static void bcm_sf2_sw_fixed_state(struct dsa_switch *ds, int port,
789 struct phylink_link_state *status)
791 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
793 status->link = false;
795 /* MoCA port is special as we do not get link status from CORE_LNKSTS,
796 * which means that we need to force the link at the port override
797 * level to get the data to flow. We do use what the interrupt handler
798 * did determine before.
800 * For the other ports, we just force the link status, since this is
801 * a fixed PHY device.
803 if (port == priv->moca_port) {
804 status->link = priv->port_sts[port].link;
805 /* For MoCA interfaces, also force a link down notification
806 * since some version of the user-space daemon (mocad) use
807 * cmd->autoneg to force the link, which messes up the PHY
808 * state machine and make it go in PHY_FORCING state instead.
811 netif_carrier_off(dsa_to_port(ds, port)->slave);
812 status->duplex = DUPLEX_FULL;
818 static void bcm_sf2_enable_acb(struct dsa_switch *ds)
820 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
823 /* Enable ACB globally */
824 reg = acb_readl(priv, ACB_CONTROL);
825 reg |= (ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
826 acb_writel(priv, reg, ACB_CONTROL);
827 reg &= ~(ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
828 reg |= ACB_EN | ACB_ALGORITHM;
829 acb_writel(priv, reg, ACB_CONTROL);
832 static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
834 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
837 bcm_sf2_intr_disable(priv);
839 /* Disable all ports physically present including the IMP
840 * port, the other ones have already been disabled during
843 for (port = 0; port < ds->num_ports; port++) {
844 if (dsa_is_user_port(ds, port) || dsa_is_cpu_port(ds, port))
845 bcm_sf2_port_disable(ds, port);
848 if (!priv->wol_ports_mask)
849 clk_disable_unprepare(priv->clk);
854 static int bcm_sf2_sw_resume(struct dsa_switch *ds)
856 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
859 if (!priv->wol_ports_mask)
860 clk_prepare_enable(priv->clk);
862 ret = bcm_sf2_sw_rst(priv);
864 pr_err("%s: failed to software reset switch\n", __func__);
868 ret = bcm_sf2_cfp_resume(ds);
872 if (priv->hw_params.num_gphy == 1)
873 bcm_sf2_gphy_enable_set(ds, true);
880 static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
881 struct ethtool_wolinfo *wol)
883 struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
884 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
885 struct ethtool_wolinfo pwol = { };
887 /* Get the parent device WoL settings */
888 if (p->ethtool_ops->get_wol)
889 p->ethtool_ops->get_wol(p, &pwol);
891 /* Advertise the parent device supported settings */
892 wol->supported = pwol.supported;
893 memset(&wol->sopass, 0, sizeof(wol->sopass));
895 if (pwol.wolopts & WAKE_MAGICSECURE)
896 memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass));
898 if (priv->wol_ports_mask & (1 << port))
899 wol->wolopts = pwol.wolopts;
904 static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
905 struct ethtool_wolinfo *wol)
907 struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
908 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
909 s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
910 struct ethtool_wolinfo pwol = { };
912 if (p->ethtool_ops->get_wol)
913 p->ethtool_ops->get_wol(p, &pwol);
914 if (wol->wolopts & ~pwol.supported)
918 priv->wol_ports_mask |= (1 << port);
920 priv->wol_ports_mask &= ~(1 << port);
922 /* If we have at least one port enabled, make sure the CPU port
923 * is also enabled. If the CPU port is the last one enabled, we disable
924 * it since this configuration does not make sense.
926 if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port))
927 priv->wol_ports_mask |= (1 << cpu_port);
929 priv->wol_ports_mask &= ~(1 << cpu_port);
931 return p->ethtool_ops->set_wol(p, wol);
934 static int bcm_sf2_sw_setup(struct dsa_switch *ds)
936 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
939 /* Enable all valid ports and disable those unused */
940 for (port = 0; port < priv->hw_params.num_ports; port++) {
941 /* IMP port receives special treatment */
942 if (dsa_is_user_port(ds, port))
943 bcm_sf2_port_setup(ds, port, NULL);
944 else if (dsa_is_cpu_port(ds, port))
945 bcm_sf2_imp_setup(ds, port);
947 bcm_sf2_port_disable(ds, port);
950 b53_configure_vlan(ds);
951 bcm_sf2_enable_acb(ds);
953 return b53_setup_devlink_resources(ds);
956 static void bcm_sf2_sw_teardown(struct dsa_switch *ds)
958 dsa_devlink_resources_unregister(ds);
961 /* The SWITCH_CORE register space is managed by b53 but operates on a page +
962 * register basis so we need to translate that into an address that the
963 * bus-glue understands.
965 #define SF2_PAGE_REG_MKADDR(page, reg) ((page) << 10 | (reg) << 2)
967 static int bcm_sf2_core_read8(struct b53_device *dev, u8 page, u8 reg,
970 struct bcm_sf2_priv *priv = dev->priv;
972 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
977 static int bcm_sf2_core_read16(struct b53_device *dev, u8 page, u8 reg,
980 struct bcm_sf2_priv *priv = dev->priv;
982 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
987 static int bcm_sf2_core_read32(struct b53_device *dev, u8 page, u8 reg,
990 struct bcm_sf2_priv *priv = dev->priv;
992 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
997 static int bcm_sf2_core_read64(struct b53_device *dev, u8 page, u8 reg,
1000 struct bcm_sf2_priv *priv = dev->priv;
1002 *val = core_readq(priv, SF2_PAGE_REG_MKADDR(page, reg));
1007 static int bcm_sf2_core_write8(struct b53_device *dev, u8 page, u8 reg,
1010 struct bcm_sf2_priv *priv = dev->priv;
1012 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1017 static int bcm_sf2_core_write16(struct b53_device *dev, u8 page, u8 reg,
1020 struct bcm_sf2_priv *priv = dev->priv;
1022 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1027 static int bcm_sf2_core_write32(struct b53_device *dev, u8 page, u8 reg,
1030 struct bcm_sf2_priv *priv = dev->priv;
1032 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1037 static int bcm_sf2_core_write64(struct b53_device *dev, u8 page, u8 reg,
1040 struct bcm_sf2_priv *priv = dev->priv;
1042 core_writeq(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
1047 static const struct b53_io_ops bcm_sf2_io_ops = {
1048 .read8 = bcm_sf2_core_read8,
1049 .read16 = bcm_sf2_core_read16,
1050 .read32 = bcm_sf2_core_read32,
1051 .read48 = bcm_sf2_core_read64,
1052 .read64 = bcm_sf2_core_read64,
1053 .write8 = bcm_sf2_core_write8,
1054 .write16 = bcm_sf2_core_write16,
1055 .write32 = bcm_sf2_core_write32,
1056 .write48 = bcm_sf2_core_write64,
1057 .write64 = bcm_sf2_core_write64,
1060 static void bcm_sf2_sw_get_strings(struct dsa_switch *ds, int port,
1061 u32 stringset, uint8_t *data)
1063 int cnt = b53_get_sset_count(ds, port, stringset);
1065 b53_get_strings(ds, port, stringset, data);
1066 bcm_sf2_cfp_get_strings(ds, port, stringset,
1067 data + cnt * ETH_GSTRING_LEN);
1070 static void bcm_sf2_sw_get_ethtool_stats(struct dsa_switch *ds, int port,
1073 int cnt = b53_get_sset_count(ds, port, ETH_SS_STATS);
1075 b53_get_ethtool_stats(ds, port, data);
1076 bcm_sf2_cfp_get_ethtool_stats(ds, port, data + cnt);
1079 static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds, int port,
1082 int cnt = b53_get_sset_count(ds, port, sset);
1087 cnt += bcm_sf2_cfp_get_sset_count(ds, port, sset);
1092 static const struct dsa_switch_ops bcm_sf2_ops = {
1093 .get_tag_protocol = b53_get_tag_protocol,
1094 .setup = bcm_sf2_sw_setup,
1095 .teardown = bcm_sf2_sw_teardown,
1096 .get_strings = bcm_sf2_sw_get_strings,
1097 .get_ethtool_stats = bcm_sf2_sw_get_ethtool_stats,
1098 .get_sset_count = bcm_sf2_sw_get_sset_count,
1099 .get_ethtool_phy_stats = b53_get_ethtool_phy_stats,
1100 .get_phy_flags = bcm_sf2_sw_get_phy_flags,
1101 .phylink_validate = bcm_sf2_sw_validate,
1102 .phylink_mac_config = bcm_sf2_sw_mac_config,
1103 .phylink_mac_link_down = bcm_sf2_sw_mac_link_down,
1104 .phylink_mac_link_up = bcm_sf2_sw_mac_link_up,
1105 .phylink_fixed_state = bcm_sf2_sw_fixed_state,
1106 .suspend = bcm_sf2_sw_suspend,
1107 .resume = bcm_sf2_sw_resume,
1108 .get_wol = bcm_sf2_sw_get_wol,
1109 .set_wol = bcm_sf2_sw_set_wol,
1110 .port_enable = bcm_sf2_port_setup,
1111 .port_disable = bcm_sf2_port_disable,
1112 .get_mac_eee = b53_get_mac_eee,
1113 .set_mac_eee = b53_set_mac_eee,
1114 .port_bridge_join = b53_br_join,
1115 .port_bridge_leave = b53_br_leave,
1116 .port_stp_state_set = b53_br_set_stp_state,
1117 .port_fast_age = b53_br_fast_age,
1118 .port_vlan_filtering = b53_vlan_filtering,
1119 .port_vlan_prepare = b53_vlan_prepare,
1120 .port_vlan_add = b53_vlan_add,
1121 .port_vlan_del = b53_vlan_del,
1122 .port_fdb_dump = b53_fdb_dump,
1123 .port_fdb_add = b53_fdb_add,
1124 .port_fdb_del = b53_fdb_del,
1125 .get_rxnfc = bcm_sf2_get_rxnfc,
1126 .set_rxnfc = bcm_sf2_set_rxnfc,
1127 .port_mirror_add = b53_mirror_add,
1128 .port_mirror_del = b53_mirror_del,
1129 .port_mdb_prepare = b53_mdb_prepare,
1130 .port_mdb_add = b53_mdb_add,
1131 .port_mdb_del = b53_mdb_del,
1134 struct bcm_sf2_of_data {
1136 const u16 *reg_offsets;
1137 unsigned int core_reg_align;
1138 unsigned int num_cfp_rules;
1141 static const u16 bcm_sf2_4908_reg_offsets[] = {
1142 [REG_SWITCH_CNTRL] = 0x00,
1143 [REG_SWITCH_STATUS] = 0x04,
1144 [REG_DIR_DATA_WRITE] = 0x08,
1145 [REG_DIR_DATA_READ] = 0x0c,
1146 [REG_SWITCH_REVISION] = 0x10,
1147 [REG_PHY_REVISION] = 0x14,
1148 [REG_SPHY_CNTRL] = 0x24,
1149 [REG_CROSSBAR] = 0xc8,
1150 [REG_RGMII_0_CNTRL] = 0xe0,
1151 [REG_RGMII_1_CNTRL] = 0xec,
1152 [REG_RGMII_2_CNTRL] = 0xf8,
1153 [REG_LED_0_CNTRL] = 0x40,
1154 [REG_LED_1_CNTRL] = 0x4c,
1155 [REG_LED_2_CNTRL] = 0x58,
1158 static const struct bcm_sf2_of_data bcm_sf2_4908_data = {
1159 .type = BCM4908_DEVICE_ID,
1160 .core_reg_align = 0,
1161 .reg_offsets = bcm_sf2_4908_reg_offsets,
1162 .num_cfp_rules = 0, /* FIXME */
1165 /* Register offsets for the SWITCH_REG_* block */
1166 static const u16 bcm_sf2_7445_reg_offsets[] = {
1167 [REG_SWITCH_CNTRL] = 0x00,
1168 [REG_SWITCH_STATUS] = 0x04,
1169 [REG_DIR_DATA_WRITE] = 0x08,
1170 [REG_DIR_DATA_READ] = 0x0C,
1171 [REG_SWITCH_REVISION] = 0x18,
1172 [REG_PHY_REVISION] = 0x1C,
1173 [REG_SPHY_CNTRL] = 0x2C,
1174 [REG_RGMII_0_CNTRL] = 0x34,
1175 [REG_RGMII_1_CNTRL] = 0x40,
1176 [REG_RGMII_2_CNTRL] = 0x4c,
1177 [REG_LED_0_CNTRL] = 0x90,
1178 [REG_LED_1_CNTRL] = 0x94,
1179 [REG_LED_2_CNTRL] = 0x98,
1182 static const struct bcm_sf2_of_data bcm_sf2_7445_data = {
1183 .type = BCM7445_DEVICE_ID,
1184 .core_reg_align = 0,
1185 .reg_offsets = bcm_sf2_7445_reg_offsets,
1186 .num_cfp_rules = 256,
1189 static const u16 bcm_sf2_7278_reg_offsets[] = {
1190 [REG_SWITCH_CNTRL] = 0x00,
1191 [REG_SWITCH_STATUS] = 0x04,
1192 [REG_DIR_DATA_WRITE] = 0x08,
1193 [REG_DIR_DATA_READ] = 0x0c,
1194 [REG_SWITCH_REVISION] = 0x10,
1195 [REG_PHY_REVISION] = 0x14,
1196 [REG_SPHY_CNTRL] = 0x24,
1197 [REG_RGMII_0_CNTRL] = 0xe0,
1198 [REG_RGMII_1_CNTRL] = 0xec,
1199 [REG_RGMII_2_CNTRL] = 0xf8,
1200 [REG_LED_0_CNTRL] = 0x40,
1201 [REG_LED_1_CNTRL] = 0x4c,
1202 [REG_LED_2_CNTRL] = 0x58,
1205 static const struct bcm_sf2_of_data bcm_sf2_7278_data = {
1206 .type = BCM7278_DEVICE_ID,
1207 .core_reg_align = 1,
1208 .reg_offsets = bcm_sf2_7278_reg_offsets,
1209 .num_cfp_rules = 128,
1212 static const struct of_device_id bcm_sf2_of_match[] = {
1213 { .compatible = "brcm,bcm4908-switch",
1214 .data = &bcm_sf2_4908_data
1216 { .compatible = "brcm,bcm7445-switch-v4.0",
1217 .data = &bcm_sf2_7445_data
1219 { .compatible = "brcm,bcm7278-switch-v4.0",
1220 .data = &bcm_sf2_7278_data
1222 { .compatible = "brcm,bcm7278-switch-v4.8",
1223 .data = &bcm_sf2_7278_data
1227 MODULE_DEVICE_TABLE(of, bcm_sf2_of_match);
1229 static int bcm_sf2_sw_probe(struct platform_device *pdev)
1231 const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
1232 struct device_node *dn = pdev->dev.of_node;
1233 const struct of_device_id *of_id = NULL;
1234 const struct bcm_sf2_of_data *data;
1235 struct b53_platform_data *pdata;
1236 struct dsa_switch_ops *ops;
1237 struct device_node *ports;
1238 struct bcm_sf2_priv *priv;
1239 struct b53_device *dev;
1240 struct dsa_switch *ds;
1241 void __iomem **base;
1246 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1250 ops = devm_kzalloc(&pdev->dev, sizeof(*ops), GFP_KERNEL);
1254 dev = b53_switch_alloc(&pdev->dev, &bcm_sf2_io_ops, priv);
1258 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1262 of_id = of_match_node(bcm_sf2_of_match, dn);
1263 if (!of_id || !of_id->data)
1268 /* Set SWITCH_REG register offsets and SWITCH_CORE align factor */
1269 priv->type = data->type;
1270 priv->reg_offsets = data->reg_offsets;
1271 priv->core_reg_align = data->core_reg_align;
1272 priv->num_cfp_rules = data->num_cfp_rules;
1274 priv->rcdev = devm_reset_control_get_optional_exclusive(&pdev->dev,
1276 if (PTR_ERR(priv->rcdev) == -EPROBE_DEFER)
1277 return PTR_ERR(priv->rcdev);
1279 /* Auto-detection using standard registers will not work, so
1280 * provide an indication of what kind of device we are for
1281 * b53_common to work with
1283 pdata->chip_id = priv->type;
1288 ds->ops = &bcm_sf2_ops;
1290 /* Advertise the 8 egress queues */
1291 ds->num_tx_queues = SF2_NUM_EGRESS_QUEUES;
1293 dev_set_drvdata(&pdev->dev, priv);
1295 spin_lock_init(&priv->indir_lock);
1296 mutex_init(&priv->cfp.lock);
1297 INIT_LIST_HEAD(&priv->cfp.rules_list);
1299 /* CFP rule #0 cannot be used for specific classifications, flag it as
1302 set_bit(0, priv->cfp.used);
1303 set_bit(0, priv->cfp.unique);
1305 /* Balance of_node_put() done by of_find_node_by_name() */
1307 ports = of_find_node_by_name(dn, "ports");
1309 bcm_sf2_identify_ports(priv, ports);
1313 priv->irq0 = irq_of_parse_and_map(dn, 0);
1314 priv->irq1 = irq_of_parse_and_map(dn, 1);
1317 for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
1318 *base = devm_platform_ioremap_resource(pdev, i);
1319 if (IS_ERR(*base)) {
1320 pr_err("unable to find register: %s\n", reg_names[i]);
1321 return PTR_ERR(*base);
1326 priv->clk = devm_clk_get_optional(&pdev->dev, "sw_switch");
1327 if (IS_ERR(priv->clk))
1328 return PTR_ERR(priv->clk);
1330 clk_prepare_enable(priv->clk);
1332 priv->clk_mdiv = devm_clk_get_optional(&pdev->dev, "sw_switch_mdiv");
1333 if (IS_ERR(priv->clk_mdiv)) {
1334 ret = PTR_ERR(priv->clk_mdiv);
1338 clk_prepare_enable(priv->clk_mdiv);
1340 ret = bcm_sf2_sw_rst(priv);
1342 pr_err("unable to software reset switch: %d\n", ret);
1346 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1348 ret = bcm_sf2_mdio_register(ds);
1350 pr_err("failed to register MDIO bus\n");
1354 bcm_sf2_gphy_enable_set(priv->dev->ds, false);
1356 ret = bcm_sf2_cfp_rst(priv);
1358 pr_err("failed to reset CFP\n");
1362 /* Disable all interrupts and request them */
1363 bcm_sf2_intr_disable(priv);
1365 ret = devm_request_irq(&pdev->dev, priv->irq0, bcm_sf2_switch_0_isr, 0,
1368 pr_err("failed to request switch_0 IRQ\n");
1372 ret = devm_request_irq(&pdev->dev, priv->irq1, bcm_sf2_switch_1_isr, 0,
1375 pr_err("failed to request switch_1 IRQ\n");
1379 /* Reset the MIB counters */
1380 reg = core_readl(priv, CORE_GMNCFGCFG);
1382 core_writel(priv, reg, CORE_GMNCFGCFG);
1383 reg &= ~RST_MIB_CNT;
1384 core_writel(priv, reg, CORE_GMNCFGCFG);
1386 /* Get the maximum number of ports for this switch */
1387 priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1;
1388 if (priv->hw_params.num_ports > DSA_MAX_PORTS)
1389 priv->hw_params.num_ports = DSA_MAX_PORTS;
1391 /* Assume a single GPHY setup if we can't read that property */
1392 if (of_property_read_u32(dn, "brcm,num-gphy",
1393 &priv->hw_params.num_gphy))
1394 priv->hw_params.num_gphy = 1;
1396 rev = reg_readl(priv, REG_SWITCH_REVISION);
1397 priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &
1398 SWITCH_TOP_REV_MASK;
1399 priv->hw_params.core_rev = (rev & SF2_REV_MASK);
1401 rev = reg_readl(priv, REG_PHY_REVISION);
1402 priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
1404 ret = b53_switch_register(dev);
1408 dev_info(&pdev->dev,
1409 "Starfighter 2 top: %x.%02x, core: %x.%02x, IRQs: %d, %d\n",
1410 priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
1411 priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
1412 priv->irq0, priv->irq1);
1417 bcm_sf2_mdio_unregister(priv);
1419 clk_disable_unprepare(priv->clk_mdiv);
1421 clk_disable_unprepare(priv->clk);
1425 static int bcm_sf2_sw_remove(struct platform_device *pdev)
1427 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1429 priv->wol_ports_mask = 0;
1430 /* Disable interrupts */
1431 bcm_sf2_intr_disable(priv);
1432 dsa_unregister_switch(priv->dev->ds);
1433 bcm_sf2_cfp_exit(priv->dev->ds);
1434 bcm_sf2_mdio_unregister(priv);
1435 clk_disable_unprepare(priv->clk_mdiv);
1436 clk_disable_unprepare(priv->clk);
1437 if (priv->type == BCM7278_DEVICE_ID && !IS_ERR(priv->rcdev))
1438 reset_control_assert(priv->rcdev);
1443 static void bcm_sf2_sw_shutdown(struct platform_device *pdev)
1445 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1447 /* For a kernel about to be kexec'd we want to keep the GPHY on for a
1448 * successful MDIO bus scan to occur. If we did turn off the GPHY
1449 * before (e.g: port_disable), this will also power it back on.
1451 * Do not rely on kexec_in_progress, just power the PHY on.
1453 if (priv->hw_params.num_gphy == 1)
1454 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1457 #ifdef CONFIG_PM_SLEEP
1458 static int bcm_sf2_suspend(struct device *dev)
1460 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1462 return dsa_switch_suspend(priv->dev->ds);
1465 static int bcm_sf2_resume(struct device *dev)
1467 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1469 return dsa_switch_resume(priv->dev->ds);
1471 #endif /* CONFIG_PM_SLEEP */
1473 static SIMPLE_DEV_PM_OPS(bcm_sf2_pm_ops,
1474 bcm_sf2_suspend, bcm_sf2_resume);
1477 static struct platform_driver bcm_sf2_driver = {
1478 .probe = bcm_sf2_sw_probe,
1479 .remove = bcm_sf2_sw_remove,
1480 .shutdown = bcm_sf2_sw_shutdown,
1483 .of_match_table = bcm_sf2_of_match,
1484 .pm = &bcm_sf2_pm_ops,
1487 module_platform_driver(bcm_sf2_driver);
1489 MODULE_AUTHOR("Broadcom Corporation");
1490 MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip");
1491 MODULE_LICENSE("GPL");
1492 MODULE_ALIAS("platform:brcm-sf2");