1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Broadcom Starfighter 2 DSA switch driver
5 * Copyright (C) 2014, Broadcom Corporation
8 #include <linux/list.h>
9 #include <linux/module.h>
10 #include <linux/netdevice.h>
11 #include <linux/interrupt.h>
12 #include <linux/platform_device.h>
13 #include <linux/phy.h>
14 #include <linux/phy_fixed.h>
15 #include <linux/phylink.h>
16 #include <linux/mii.h>
18 #include <linux/of_irq.h>
19 #include <linux/of_address.h>
20 #include <linux/of_net.h>
21 #include <linux/of_mdio.h>
23 #include <linux/ethtool.h>
24 #include <linux/if_bridge.h>
25 #include <linux/brcmphy.h>
26 #include <linux/etherdevice.h>
27 #include <linux/platform_data/b53.h>
30 #include "bcm_sf2_regs.h"
31 #include "b53/b53_priv.h"
32 #include "b53/b53_regs.h"
34 static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
36 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
40 /* Enable the port memories */
41 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
42 reg &= ~P_TXQ_PSM_VDD(port);
43 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
45 /* Enable forwarding */
46 core_writel(priv, SW_FWDG_EN, CORE_SWMODE);
48 /* Enable IMP port in dumb mode */
49 reg = core_readl(priv, CORE_SWITCH_CTRL);
50 reg |= MII_DUMB_FWDG_EN;
51 core_writel(priv, reg, CORE_SWITCH_CTRL);
53 /* Configure Traffic Class to QoS mapping, allow each priority to map
54 * to a different queue number
56 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
57 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
58 reg |= i << (PRT_TO_QID_SHIFT * i);
59 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
61 b53_brcm_hdr_setup(ds, port);
64 if (priv->type == BCM7445_DEVICE_ID)
65 offset = CORE_STS_OVERRIDE_IMP;
67 offset = CORE_STS_OVERRIDE_IMP2;
69 /* Force link status for IMP port */
70 reg = core_readl(priv, offset);
71 reg |= (MII_SW_OR | LINK_STS);
72 reg &= ~GMII_SPEED_UP_2G;
73 core_writel(priv, reg, offset);
75 /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */
76 reg = core_readl(priv, CORE_IMP_CTL);
77 reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN);
78 reg &= ~(RX_DIS | TX_DIS);
79 core_writel(priv, reg, CORE_IMP_CTL);
81 reg = core_readl(priv, CORE_G_PCTL_PORT(port));
82 reg &= ~(RX_DIS | TX_DIS);
83 core_writel(priv, reg, CORE_G_PCTL_PORT(port));
87 static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable)
89 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
92 reg = reg_readl(priv, REG_SPHY_CNTRL);
95 reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | IDDQ_GLOBAL_PWR | CK25_DIS);
96 reg_writel(priv, reg, REG_SPHY_CNTRL);
98 reg = reg_readl(priv, REG_SPHY_CNTRL);
101 reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET;
102 reg_writel(priv, reg, REG_SPHY_CNTRL);
106 reg_writel(priv, reg, REG_SPHY_CNTRL);
108 /* Use PHY-driven LED signaling */
110 reg = reg_readl(priv, REG_LED_CNTRL(0));
111 reg |= SPDLNK_SRC_SEL;
112 reg_writel(priv, reg, REG_LED_CNTRL(0));
116 static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv,
126 /* Port 0 interrupts are located on the first bank */
127 intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF));
130 off = P_IRQ_OFF(port);
134 intrl2_1_mask_clear(priv, P_IRQ_MASK(off));
137 static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv,
147 /* Port 0 interrupts are located on the first bank */
148 intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF));
149 intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR);
152 off = P_IRQ_OFF(port);
156 intrl2_1_mask_set(priv, P_IRQ_MASK(off));
157 intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR);
160 static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
161 struct phy_device *phy)
163 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
167 if (!dsa_is_user_port(ds, port))
170 /* Clear the memory power down */
171 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
172 reg &= ~P_TXQ_PSM_VDD(port);
173 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
175 /* Enable learning */
176 reg = core_readl(priv, CORE_DIS_LEARN);
178 core_writel(priv, reg, CORE_DIS_LEARN);
180 /* Enable Broadcom tags for that port if requested */
181 if (priv->brcm_tag_mask & BIT(port))
182 b53_brcm_hdr_setup(ds, port);
184 /* Configure Traffic Class to QoS mapping, allow each priority to map
185 * to a different queue number
187 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
188 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
189 reg |= i << (PRT_TO_QID_SHIFT * i);
190 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
192 /* Re-enable the GPHY and re-apply workarounds */
193 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) {
194 bcm_sf2_gphy_enable_set(ds, true);
196 /* if phy_stop() has been called before, phy
197 * will be in halted state, and phy_start()
200 * the resume path does not configure back
201 * autoneg settings, and since we hard reset
202 * the phy manually here, we need to reset the
203 * state machine also.
205 phy->state = PHY_READY;
210 /* Enable MoCA port interrupts to get notified */
211 if (port == priv->moca_port)
212 bcm_sf2_port_intr_enable(priv, port);
214 /* Set per-queue pause threshold to 32 */
215 core_writel(priv, 32, CORE_TXQ_THD_PAUSE_QN_PORT(port));
217 /* Set ACB threshold to 24 */
218 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++) {
219 reg = acb_readl(priv, ACB_QUEUE_CFG(port *
220 SF2_NUM_EGRESS_QUEUES + i));
221 reg &= ~XOFF_THRESHOLD_MASK;
223 acb_writel(priv, reg, ACB_QUEUE_CFG(port *
224 SF2_NUM_EGRESS_QUEUES + i));
227 return b53_enable_port(ds, port, phy);
230 static void bcm_sf2_port_disable(struct dsa_switch *ds, int port)
232 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
235 /* Disable learning while in WoL mode */
236 if (priv->wol_ports_mask & (1 << port)) {
237 reg = core_readl(priv, CORE_DIS_LEARN);
239 core_writel(priv, reg, CORE_DIS_LEARN);
243 if (port == priv->moca_port)
244 bcm_sf2_port_intr_disable(priv, port);
246 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1)
247 bcm_sf2_gphy_enable_set(ds, false);
249 b53_disable_port(ds, port);
251 /* Power down the port memory */
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);
258 static int bcm_sf2_sw_indir_rw(struct bcm_sf2_priv *priv, int op, int addr,
264 reg = reg_readl(priv, REG_SWITCH_CNTRL);
265 reg |= MDIO_MASTER_SEL;
266 reg_writel(priv, reg, REG_SWITCH_CNTRL);
268 /* Page << 8 | offset */
271 core_writel(priv, addr, reg);
273 /* Page << 8 | offset */
274 reg = 0x80 << 8 | regnum << 1;
278 ret = core_readl(priv, reg);
280 core_writel(priv, val, reg);
282 reg = reg_readl(priv, REG_SWITCH_CNTRL);
283 reg &= ~MDIO_MASTER_SEL;
284 reg_writel(priv, reg, REG_SWITCH_CNTRL);
289 static int bcm_sf2_sw_mdio_read(struct mii_bus *bus, int addr, int regnum)
291 struct bcm_sf2_priv *priv = bus->priv;
293 /* Intercept reads from Broadcom pseudo-PHY address, else, send
294 * them to our master MDIO bus controller
296 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
297 return bcm_sf2_sw_indir_rw(priv, 1, addr, regnum, 0);
299 return mdiobus_read_nested(priv->master_mii_bus, addr, regnum);
302 static int bcm_sf2_sw_mdio_write(struct mii_bus *bus, int addr, int regnum,
305 struct bcm_sf2_priv *priv = bus->priv;
307 /* Intercept writes to the Broadcom pseudo-PHY address, else,
308 * send them to our master MDIO bus controller
310 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
311 return bcm_sf2_sw_indir_rw(priv, 0, addr, regnum, val);
313 return mdiobus_write_nested(priv->master_mii_bus, addr,
317 static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id)
319 struct dsa_switch *ds = dev_id;
320 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
322 priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
324 intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR);
329 static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id)
331 struct dsa_switch *ds = dev_id;
332 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
334 priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
336 intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR);
338 if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF)) {
339 priv->port_sts[7].link = true;
340 dsa_port_phylink_mac_change(ds, 7, true);
342 if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF)) {
343 priv->port_sts[7].link = false;
344 dsa_port_phylink_mac_change(ds, 7, false);
350 static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv)
352 unsigned int timeout = 1000;
356 /* The watchdog reset does not work on 7278, we need to hit the
357 * "external" reset line through the reset controller.
359 if (priv->type == BCM7278_DEVICE_ID && !IS_ERR(priv->rcdev)) {
360 ret = reset_control_assert(priv->rcdev);
364 return reset_control_deassert(priv->rcdev);
367 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
368 reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET;
369 core_writel(priv, reg, CORE_WATCHDOG_CTRL);
372 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
373 if (!(reg & SOFTWARE_RESET))
376 usleep_range(1000, 2000);
377 } while (timeout-- > 0);
385 static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
387 intrl2_0_mask_set(priv, 0xffffffff);
388 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
389 intrl2_1_mask_set(priv, 0xffffffff);
390 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
393 static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,
394 struct device_node *dn)
396 struct device_node *port;
397 unsigned int port_num;
398 phy_interface_t mode;
401 priv->moca_port = -1;
403 for_each_available_child_of_node(dn, port) {
404 if (of_property_read_u32(port, "reg", &port_num))
407 /* Internal PHYs get assigned a specific 'phy-mode' property
408 * value: "internal" to help flag them before MDIO probing
409 * has completed, since they might be turned off at that
412 err = of_get_phy_mode(port, &mode);
416 if (mode == PHY_INTERFACE_MODE_INTERNAL)
417 priv->int_phy_mask |= 1 << port_num;
419 if (mode == PHY_INTERFACE_MODE_MOCA)
420 priv->moca_port = port_num;
422 if (of_property_read_bool(port, "brcm,use-bcm-hdr"))
423 priv->brcm_tag_mask |= 1 << port_num;
427 static int bcm_sf2_mdio_register(struct dsa_switch *ds)
429 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
430 struct device_node *dn;
434 /* Find our integrated MDIO bus node */
435 dn = of_find_compatible_node(NULL, NULL, "brcm,unimac-mdio");
436 priv->master_mii_bus = of_mdio_find_bus(dn);
437 if (!priv->master_mii_bus)
438 return -EPROBE_DEFER;
440 get_device(&priv->master_mii_bus->dev);
441 priv->master_mii_dn = dn;
443 priv->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
444 if (!priv->slave_mii_bus)
447 priv->slave_mii_bus->priv = priv;
448 priv->slave_mii_bus->name = "sf2 slave mii";
449 priv->slave_mii_bus->read = bcm_sf2_sw_mdio_read;
450 priv->slave_mii_bus->write = bcm_sf2_sw_mdio_write;
451 snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "sf2-%d",
453 priv->slave_mii_bus->dev.of_node = dn;
455 /* Include the pseudo-PHY address to divert reads towards our
456 * workaround. This is only required for 7445D0, since 7445E0
457 * disconnects the internal switch pseudo-PHY such that we can use the
458 * regular SWITCH_MDIO master controller instead.
460 * Here we flag the pseudo PHY as needing special treatment and would
461 * otherwise make all other PHY read/writes go to the master MDIO bus
462 * controller that comes with this switch backed by the "mdio-unimac"
465 if (of_machine_is_compatible("brcm,bcm7445d0"))
466 priv->indir_phy_mask |= (1 << BRCM_PSEUDO_PHY_ADDR);
468 priv->indir_phy_mask = 0;
470 ds->phys_mii_mask = priv->indir_phy_mask;
471 ds->slave_mii_bus = priv->slave_mii_bus;
472 priv->slave_mii_bus->parent = ds->dev->parent;
473 priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask;
475 err = of_mdiobus_register(priv->slave_mii_bus, dn);
482 static void bcm_sf2_mdio_unregister(struct bcm_sf2_priv *priv)
484 mdiobus_unregister(priv->slave_mii_bus);
485 of_node_put(priv->master_mii_dn);
488 static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port)
490 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
492 /* The BCM7xxx PHY driver expects to find the integrated PHY revision
493 * in bits 15:8 and the patch level in bits 7:0 which is exactly what
494 * the REG_PHY_REVISION register layout is.
497 return priv->hw_params.gphy_rev;
500 static void bcm_sf2_sw_validate(struct dsa_switch *ds, int port,
501 unsigned long *supported,
502 struct phylink_link_state *state)
504 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
505 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
507 if (!phy_interface_mode_is_rgmii(state->interface) &&
508 state->interface != PHY_INTERFACE_MODE_MII &&
509 state->interface != PHY_INTERFACE_MODE_REVMII &&
510 state->interface != PHY_INTERFACE_MODE_GMII &&
511 state->interface != PHY_INTERFACE_MODE_INTERNAL &&
512 state->interface != PHY_INTERFACE_MODE_MOCA) {
513 bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
514 if (port != core_readl(priv, CORE_IMP0_PRT_ID))
516 "Unsupported interface: %d for port %d\n",
517 state->interface, port);
521 /* Allow all the expected bits */
522 phylink_set(mask, Autoneg);
523 phylink_set_port_modes(mask);
524 phylink_set(mask, Pause);
525 phylink_set(mask, Asym_Pause);
527 /* With the exclusion of MII and Reverse MII, we support Gigabit,
528 * including Half duplex
530 if (state->interface != PHY_INTERFACE_MODE_MII &&
531 state->interface != PHY_INTERFACE_MODE_REVMII) {
532 phylink_set(mask, 1000baseT_Full);
533 phylink_set(mask, 1000baseT_Half);
536 phylink_set(mask, 10baseT_Half);
537 phylink_set(mask, 10baseT_Full);
538 phylink_set(mask, 100baseT_Half);
539 phylink_set(mask, 100baseT_Full);
541 bitmap_and(supported, supported, mask,
542 __ETHTOOL_LINK_MODE_MASK_NBITS);
543 bitmap_and(state->advertising, state->advertising, mask,
544 __ETHTOOL_LINK_MODE_MASK_NBITS);
547 static void bcm_sf2_sw_mac_config(struct dsa_switch *ds, int port,
549 const struct phylink_link_state *state)
551 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
552 u32 id_mode_dis = 0, port_mode;
555 if (port == core_readl(priv, CORE_IMP0_PRT_ID))
558 if (priv->type == BCM7445_DEVICE_ID)
559 offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
561 offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
563 switch (state->interface) {
564 case PHY_INTERFACE_MODE_RGMII:
567 case PHY_INTERFACE_MODE_RGMII_TXID:
568 port_mode = EXT_GPHY;
570 case PHY_INTERFACE_MODE_MII:
571 port_mode = EXT_EPHY;
573 case PHY_INTERFACE_MODE_REVMII:
574 port_mode = EXT_REVMII;
577 /* all other PHYs: internal and MoCA */
581 /* Clear id_mode_dis bit, and the existing port mode, let
582 * RGMII_MODE_EN bet set by mac_link_{up,down}
584 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
586 reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT);
587 reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN);
593 if (state->pause & MLO_PAUSE_TXRX_MASK) {
594 if (state->pause & MLO_PAUSE_TX)
599 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
602 /* Force link settings detected from the PHY */
604 switch (state->speed) {
606 reg |= SPDSTS_1000 << SPEED_SHIFT;
609 reg |= SPDSTS_100 << SPEED_SHIFT;
615 if (state->duplex == DUPLEX_FULL)
618 core_writel(priv, reg, offset);
621 static void bcm_sf2_sw_mac_link_set(struct dsa_switch *ds, int port,
622 phy_interface_t interface, bool link)
624 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
627 if (!phy_interface_mode_is_rgmii(interface) &&
628 interface != PHY_INTERFACE_MODE_MII &&
629 interface != PHY_INTERFACE_MODE_REVMII)
632 /* If the link is down, just disable the interface to conserve power */
633 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
635 reg |= RGMII_MODE_EN;
637 reg &= ~RGMII_MODE_EN;
638 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
641 static void bcm_sf2_sw_mac_link_down(struct dsa_switch *ds, int port,
643 phy_interface_t interface)
645 bcm_sf2_sw_mac_link_set(ds, port, interface, false);
648 static void bcm_sf2_sw_mac_link_up(struct dsa_switch *ds, int port,
650 phy_interface_t interface,
651 struct phy_device *phydev)
653 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
654 struct ethtool_eee *p = &priv->dev->ports[port].eee;
656 bcm_sf2_sw_mac_link_set(ds, port, interface, true);
658 if (mode == MLO_AN_PHY && phydev)
659 p->eee_enabled = b53_eee_init(ds, port, phydev);
662 static void bcm_sf2_sw_fixed_state(struct dsa_switch *ds, int port,
663 struct phylink_link_state *status)
665 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
667 status->link = false;
669 /* MoCA port is special as we do not get link status from CORE_LNKSTS,
670 * which means that we need to force the link at the port override
671 * level to get the data to flow. We do use what the interrupt handler
672 * did determine before.
674 * For the other ports, we just force the link status, since this is
675 * a fixed PHY device.
677 if (port == priv->moca_port) {
678 status->link = priv->port_sts[port].link;
679 /* For MoCA interfaces, also force a link down notification
680 * since some version of the user-space daemon (mocad) use
681 * cmd->autoneg to force the link, which messes up the PHY
682 * state machine and make it go in PHY_FORCING state instead.
685 netif_carrier_off(dsa_to_port(ds, port)->slave);
686 status->duplex = DUPLEX_FULL;
692 static void bcm_sf2_enable_acb(struct dsa_switch *ds)
694 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
697 /* Enable ACB globally */
698 reg = acb_readl(priv, ACB_CONTROL);
699 reg |= (ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
700 acb_writel(priv, reg, ACB_CONTROL);
701 reg &= ~(ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
702 reg |= ACB_EN | ACB_ALGORITHM;
703 acb_writel(priv, reg, ACB_CONTROL);
706 static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
708 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
711 bcm_sf2_intr_disable(priv);
713 /* Disable all ports physically present including the IMP
714 * port, the other ones have already been disabled during
717 for (port = 0; port < ds->num_ports; port++) {
718 if (dsa_is_user_port(ds, port) || dsa_is_cpu_port(ds, port))
719 bcm_sf2_port_disable(ds, port);
725 static int bcm_sf2_sw_resume(struct dsa_switch *ds)
727 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
730 ret = bcm_sf2_sw_rst(priv);
732 pr_err("%s: failed to software reset switch\n", __func__);
736 ret = bcm_sf2_cfp_resume(ds);
740 if (priv->hw_params.num_gphy == 1)
741 bcm_sf2_gphy_enable_set(ds, true);
748 static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
749 struct ethtool_wolinfo *wol)
751 struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
752 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
753 struct ethtool_wolinfo pwol = { };
755 /* Get the parent device WoL settings */
756 if (p->ethtool_ops->get_wol)
757 p->ethtool_ops->get_wol(p, &pwol);
759 /* Advertise the parent device supported settings */
760 wol->supported = pwol.supported;
761 memset(&wol->sopass, 0, sizeof(wol->sopass));
763 if (pwol.wolopts & WAKE_MAGICSECURE)
764 memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass));
766 if (priv->wol_ports_mask & (1 << port))
767 wol->wolopts = pwol.wolopts;
772 static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
773 struct ethtool_wolinfo *wol)
775 struct net_device *p = dsa_to_port(ds, port)->cpu_dp->master;
776 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
777 s8 cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
778 struct ethtool_wolinfo pwol = { };
780 if (p->ethtool_ops->get_wol)
781 p->ethtool_ops->get_wol(p, &pwol);
782 if (wol->wolopts & ~pwol.supported)
786 priv->wol_ports_mask |= (1 << port);
788 priv->wol_ports_mask &= ~(1 << port);
790 /* If we have at least one port enabled, make sure the CPU port
791 * is also enabled. If the CPU port is the last one enabled, we disable
792 * it since this configuration does not make sense.
794 if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port))
795 priv->wol_ports_mask |= (1 << cpu_port);
797 priv->wol_ports_mask &= ~(1 << cpu_port);
799 return p->ethtool_ops->set_wol(p, wol);
802 static int bcm_sf2_sw_setup(struct dsa_switch *ds)
804 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
807 /* Enable all valid ports and disable those unused */
808 for (port = 0; port < priv->hw_params.num_ports; port++) {
809 /* IMP port receives special treatment */
810 if (dsa_is_user_port(ds, port))
811 bcm_sf2_port_setup(ds, port, NULL);
812 else if (dsa_is_cpu_port(ds, port))
813 bcm_sf2_imp_setup(ds, port);
815 bcm_sf2_port_disable(ds, port);
818 b53_configure_vlan(ds);
819 bcm_sf2_enable_acb(ds);
824 /* The SWITCH_CORE register space is managed by b53 but operates on a page +
825 * register basis so we need to translate that into an address that the
826 * bus-glue understands.
828 #define SF2_PAGE_REG_MKADDR(page, reg) ((page) << 10 | (reg) << 2)
830 static int bcm_sf2_core_read8(struct b53_device *dev, u8 page, u8 reg,
833 struct bcm_sf2_priv *priv = dev->priv;
835 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
840 static int bcm_sf2_core_read16(struct b53_device *dev, u8 page, u8 reg,
843 struct bcm_sf2_priv *priv = dev->priv;
845 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
850 static int bcm_sf2_core_read32(struct b53_device *dev, u8 page, u8 reg,
853 struct bcm_sf2_priv *priv = dev->priv;
855 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
860 static int bcm_sf2_core_read64(struct b53_device *dev, u8 page, u8 reg,
863 struct bcm_sf2_priv *priv = dev->priv;
865 *val = core_readq(priv, SF2_PAGE_REG_MKADDR(page, reg));
870 static int bcm_sf2_core_write8(struct b53_device *dev, u8 page, u8 reg,
873 struct bcm_sf2_priv *priv = dev->priv;
875 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
880 static int bcm_sf2_core_write16(struct b53_device *dev, u8 page, u8 reg,
883 struct bcm_sf2_priv *priv = dev->priv;
885 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
890 static int bcm_sf2_core_write32(struct b53_device *dev, u8 page, u8 reg,
893 struct bcm_sf2_priv *priv = dev->priv;
895 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
900 static int bcm_sf2_core_write64(struct b53_device *dev, u8 page, u8 reg,
903 struct bcm_sf2_priv *priv = dev->priv;
905 core_writeq(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
910 static const struct b53_io_ops bcm_sf2_io_ops = {
911 .read8 = bcm_sf2_core_read8,
912 .read16 = bcm_sf2_core_read16,
913 .read32 = bcm_sf2_core_read32,
914 .read48 = bcm_sf2_core_read64,
915 .read64 = bcm_sf2_core_read64,
916 .write8 = bcm_sf2_core_write8,
917 .write16 = bcm_sf2_core_write16,
918 .write32 = bcm_sf2_core_write32,
919 .write48 = bcm_sf2_core_write64,
920 .write64 = bcm_sf2_core_write64,
923 static void bcm_sf2_sw_get_strings(struct dsa_switch *ds, int port,
924 u32 stringset, uint8_t *data)
926 int cnt = b53_get_sset_count(ds, port, stringset);
928 b53_get_strings(ds, port, stringset, data);
929 bcm_sf2_cfp_get_strings(ds, port, stringset,
930 data + cnt * ETH_GSTRING_LEN);
933 static void bcm_sf2_sw_get_ethtool_stats(struct dsa_switch *ds, int port,
936 int cnt = b53_get_sset_count(ds, port, ETH_SS_STATS);
938 b53_get_ethtool_stats(ds, port, data);
939 bcm_sf2_cfp_get_ethtool_stats(ds, port, data + cnt);
942 static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds, int port,
945 int cnt = b53_get_sset_count(ds, port, sset);
950 cnt += bcm_sf2_cfp_get_sset_count(ds, port, sset);
955 static const struct dsa_switch_ops bcm_sf2_ops = {
956 .get_tag_protocol = b53_get_tag_protocol,
957 .setup = bcm_sf2_sw_setup,
958 .get_strings = bcm_sf2_sw_get_strings,
959 .get_ethtool_stats = bcm_sf2_sw_get_ethtool_stats,
960 .get_sset_count = bcm_sf2_sw_get_sset_count,
961 .get_ethtool_phy_stats = b53_get_ethtool_phy_stats,
962 .get_phy_flags = bcm_sf2_sw_get_phy_flags,
963 .phylink_validate = bcm_sf2_sw_validate,
964 .phylink_mac_config = bcm_sf2_sw_mac_config,
965 .phylink_mac_link_down = bcm_sf2_sw_mac_link_down,
966 .phylink_mac_link_up = bcm_sf2_sw_mac_link_up,
967 .phylink_fixed_state = bcm_sf2_sw_fixed_state,
968 .suspend = bcm_sf2_sw_suspend,
969 .resume = bcm_sf2_sw_resume,
970 .get_wol = bcm_sf2_sw_get_wol,
971 .set_wol = bcm_sf2_sw_set_wol,
972 .port_enable = bcm_sf2_port_setup,
973 .port_disable = bcm_sf2_port_disable,
974 .get_mac_eee = b53_get_mac_eee,
975 .set_mac_eee = b53_set_mac_eee,
976 .port_bridge_join = b53_br_join,
977 .port_bridge_leave = b53_br_leave,
978 .port_stp_state_set = b53_br_set_stp_state,
979 .port_fast_age = b53_br_fast_age,
980 .port_vlan_filtering = b53_vlan_filtering,
981 .port_vlan_prepare = b53_vlan_prepare,
982 .port_vlan_add = b53_vlan_add,
983 .port_vlan_del = b53_vlan_del,
984 .port_fdb_dump = b53_fdb_dump,
985 .port_fdb_add = b53_fdb_add,
986 .port_fdb_del = b53_fdb_del,
987 .get_rxnfc = bcm_sf2_get_rxnfc,
988 .set_rxnfc = bcm_sf2_set_rxnfc,
989 .port_mirror_add = b53_mirror_add,
990 .port_mirror_del = b53_mirror_del,
991 .port_mdb_prepare = b53_mdb_prepare,
992 .port_mdb_add = b53_mdb_add,
993 .port_mdb_del = b53_mdb_del,
996 struct bcm_sf2_of_data {
998 const u16 *reg_offsets;
999 unsigned int core_reg_align;
1000 unsigned int num_cfp_rules;
1003 /* Register offsets for the SWITCH_REG_* block */
1004 static const u16 bcm_sf2_7445_reg_offsets[] = {
1005 [REG_SWITCH_CNTRL] = 0x00,
1006 [REG_SWITCH_STATUS] = 0x04,
1007 [REG_DIR_DATA_WRITE] = 0x08,
1008 [REG_DIR_DATA_READ] = 0x0C,
1009 [REG_SWITCH_REVISION] = 0x18,
1010 [REG_PHY_REVISION] = 0x1C,
1011 [REG_SPHY_CNTRL] = 0x2C,
1012 [REG_RGMII_0_CNTRL] = 0x34,
1013 [REG_RGMII_1_CNTRL] = 0x40,
1014 [REG_RGMII_2_CNTRL] = 0x4c,
1015 [REG_LED_0_CNTRL] = 0x90,
1016 [REG_LED_1_CNTRL] = 0x94,
1017 [REG_LED_2_CNTRL] = 0x98,
1020 static const struct bcm_sf2_of_data bcm_sf2_7445_data = {
1021 .type = BCM7445_DEVICE_ID,
1022 .core_reg_align = 0,
1023 .reg_offsets = bcm_sf2_7445_reg_offsets,
1024 .num_cfp_rules = 256,
1027 static const u16 bcm_sf2_7278_reg_offsets[] = {
1028 [REG_SWITCH_CNTRL] = 0x00,
1029 [REG_SWITCH_STATUS] = 0x04,
1030 [REG_DIR_DATA_WRITE] = 0x08,
1031 [REG_DIR_DATA_READ] = 0x0c,
1032 [REG_SWITCH_REVISION] = 0x10,
1033 [REG_PHY_REVISION] = 0x14,
1034 [REG_SPHY_CNTRL] = 0x24,
1035 [REG_RGMII_0_CNTRL] = 0xe0,
1036 [REG_RGMII_1_CNTRL] = 0xec,
1037 [REG_RGMII_2_CNTRL] = 0xf8,
1038 [REG_LED_0_CNTRL] = 0x40,
1039 [REG_LED_1_CNTRL] = 0x4c,
1040 [REG_LED_2_CNTRL] = 0x58,
1043 static const struct bcm_sf2_of_data bcm_sf2_7278_data = {
1044 .type = BCM7278_DEVICE_ID,
1045 .core_reg_align = 1,
1046 .reg_offsets = bcm_sf2_7278_reg_offsets,
1047 .num_cfp_rules = 128,
1050 static const struct of_device_id bcm_sf2_of_match[] = {
1051 { .compatible = "brcm,bcm7445-switch-v4.0",
1052 .data = &bcm_sf2_7445_data
1054 { .compatible = "brcm,bcm7278-switch-v4.0",
1055 .data = &bcm_sf2_7278_data
1057 { .compatible = "brcm,bcm7278-switch-v4.8",
1058 .data = &bcm_sf2_7278_data
1062 MODULE_DEVICE_TABLE(of, bcm_sf2_of_match);
1064 static int bcm_sf2_sw_probe(struct platform_device *pdev)
1066 const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
1067 struct device_node *dn = pdev->dev.of_node;
1068 const struct of_device_id *of_id = NULL;
1069 const struct bcm_sf2_of_data *data;
1070 struct b53_platform_data *pdata;
1071 struct dsa_switch_ops *ops;
1072 struct bcm_sf2_priv *priv;
1073 struct b53_device *dev;
1074 struct dsa_switch *ds;
1075 void __iomem **base;
1080 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1084 ops = devm_kzalloc(&pdev->dev, sizeof(*ops), GFP_KERNEL);
1088 dev = b53_switch_alloc(&pdev->dev, &bcm_sf2_io_ops, priv);
1092 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1096 of_id = of_match_node(bcm_sf2_of_match, dn);
1097 if (!of_id || !of_id->data)
1102 /* Set SWITCH_REG register offsets and SWITCH_CORE align factor */
1103 priv->type = data->type;
1104 priv->reg_offsets = data->reg_offsets;
1105 priv->core_reg_align = data->core_reg_align;
1106 priv->num_cfp_rules = data->num_cfp_rules;
1108 priv->rcdev = devm_reset_control_get_optional_exclusive(&pdev->dev,
1110 if (PTR_ERR(priv->rcdev) == -EPROBE_DEFER)
1111 return PTR_ERR(priv->rcdev);
1113 /* Auto-detection using standard registers will not work, so
1114 * provide an indication of what kind of device we are for
1115 * b53_common to work with
1117 pdata->chip_id = priv->type;
1122 ds->ops = &bcm_sf2_ops;
1124 /* Advertise the 8 egress queues */
1125 ds->num_tx_queues = SF2_NUM_EGRESS_QUEUES;
1127 dev_set_drvdata(&pdev->dev, priv);
1129 spin_lock_init(&priv->indir_lock);
1130 mutex_init(&priv->cfp.lock);
1131 INIT_LIST_HEAD(&priv->cfp.rules_list);
1133 /* CFP rule #0 cannot be used for specific classifications, flag it as
1136 set_bit(0, priv->cfp.used);
1137 set_bit(0, priv->cfp.unique);
1139 bcm_sf2_identify_ports(priv, dn->child);
1141 priv->irq0 = irq_of_parse_and_map(dn, 0);
1142 priv->irq1 = irq_of_parse_and_map(dn, 1);
1145 for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
1146 *base = devm_platform_ioremap_resource(pdev, i);
1147 if (IS_ERR(*base)) {
1148 pr_err("unable to find register: %s\n", reg_names[i]);
1149 return PTR_ERR(*base);
1154 ret = bcm_sf2_sw_rst(priv);
1156 pr_err("unable to software reset switch: %d\n", ret);
1160 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1162 ret = bcm_sf2_mdio_register(ds);
1164 pr_err("failed to register MDIO bus\n");
1168 bcm_sf2_gphy_enable_set(priv->dev->ds, false);
1170 ret = bcm_sf2_cfp_rst(priv);
1172 pr_err("failed to reset CFP\n");
1176 /* Disable all interrupts and request them */
1177 bcm_sf2_intr_disable(priv);
1179 ret = devm_request_irq(&pdev->dev, priv->irq0, bcm_sf2_switch_0_isr, 0,
1182 pr_err("failed to request switch_0 IRQ\n");
1186 ret = devm_request_irq(&pdev->dev, priv->irq1, bcm_sf2_switch_1_isr, 0,
1189 pr_err("failed to request switch_1 IRQ\n");
1193 /* Reset the MIB counters */
1194 reg = core_readl(priv, CORE_GMNCFGCFG);
1196 core_writel(priv, reg, CORE_GMNCFGCFG);
1197 reg &= ~RST_MIB_CNT;
1198 core_writel(priv, reg, CORE_GMNCFGCFG);
1200 /* Get the maximum number of ports for this switch */
1201 priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1;
1202 if (priv->hw_params.num_ports > DSA_MAX_PORTS)
1203 priv->hw_params.num_ports = DSA_MAX_PORTS;
1205 /* Assume a single GPHY setup if we can't read that property */
1206 if (of_property_read_u32(dn, "brcm,num-gphy",
1207 &priv->hw_params.num_gphy))
1208 priv->hw_params.num_gphy = 1;
1210 rev = reg_readl(priv, REG_SWITCH_REVISION);
1211 priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &
1212 SWITCH_TOP_REV_MASK;
1213 priv->hw_params.core_rev = (rev & SF2_REV_MASK);
1215 rev = reg_readl(priv, REG_PHY_REVISION);
1216 priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
1218 ret = b53_switch_register(dev);
1222 dev_info(&pdev->dev,
1223 "Starfighter 2 top: %x.%02x, core: %x.%02x, IRQs: %d, %d\n",
1224 priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
1225 priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
1226 priv->irq0, priv->irq1);
1231 bcm_sf2_mdio_unregister(priv);
1235 static int bcm_sf2_sw_remove(struct platform_device *pdev)
1237 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1239 priv->wol_ports_mask = 0;
1240 /* Disable interrupts */
1241 bcm_sf2_intr_disable(priv);
1242 dsa_unregister_switch(priv->dev->ds);
1243 bcm_sf2_cfp_exit(priv->dev->ds);
1244 bcm_sf2_mdio_unregister(priv);
1245 if (priv->type == BCM7278_DEVICE_ID && !IS_ERR(priv->rcdev))
1246 reset_control_assert(priv->rcdev);
1251 static void bcm_sf2_sw_shutdown(struct platform_device *pdev)
1253 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1255 /* For a kernel about to be kexec'd we want to keep the GPHY on for a
1256 * successful MDIO bus scan to occur. If we did turn off the GPHY
1257 * before (e.g: port_disable), this will also power it back on.
1259 * Do not rely on kexec_in_progress, just power the PHY on.
1261 if (priv->hw_params.num_gphy == 1)
1262 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1265 #ifdef CONFIG_PM_SLEEP
1266 static int bcm_sf2_suspend(struct device *dev)
1268 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1270 return dsa_switch_suspend(priv->dev->ds);
1273 static int bcm_sf2_resume(struct device *dev)
1275 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1277 return dsa_switch_resume(priv->dev->ds);
1279 #endif /* CONFIG_PM_SLEEP */
1281 static SIMPLE_DEV_PM_OPS(bcm_sf2_pm_ops,
1282 bcm_sf2_suspend, bcm_sf2_resume);
1285 static struct platform_driver bcm_sf2_driver = {
1286 .probe = bcm_sf2_sw_probe,
1287 .remove = bcm_sf2_sw_remove,
1288 .shutdown = bcm_sf2_sw_shutdown,
1291 .of_match_table = bcm_sf2_of_match,
1292 .pm = &bcm_sf2_pm_ops,
1295 module_platform_driver(bcm_sf2_driver);
1297 MODULE_AUTHOR("Broadcom Corporation");
1298 MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip");
1299 MODULE_LICENSE("GPL");
1300 MODULE_ALIAS("platform:brcm-sf2");