2 * Broadcom Starfighter 2 DSA switch driver
4 * Copyright (C) 2014, Broadcom Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/list.h>
13 #include <linux/module.h>
14 #include <linux/netdevice.h>
15 #include <linux/interrupt.h>
16 #include <linux/platform_device.h>
17 #include <linux/phy.h>
18 #include <linux/phy_fixed.h>
19 #include <linux/phylink.h>
20 #include <linux/mii.h>
22 #include <linux/of_irq.h>
23 #include <linux/of_address.h>
24 #include <linux/of_net.h>
25 #include <linux/of_mdio.h>
27 #include <linux/ethtool.h>
28 #include <linux/if_bridge.h>
29 #include <linux/brcmphy.h>
30 #include <linux/etherdevice.h>
31 #include <linux/platform_data/b53.h>
34 #include "bcm_sf2_regs.h"
35 #include "b53/b53_priv.h"
36 #include "b53/b53_regs.h"
38 static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
40 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
44 if (priv->type == BCM7445_DEVICE_ID)
45 offset = CORE_STS_OVERRIDE_IMP;
47 offset = CORE_STS_OVERRIDE_IMP2;
49 /* Enable the port memories */
50 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
51 reg &= ~P_TXQ_PSM_VDD(port);
52 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
54 /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */
55 reg = core_readl(priv, CORE_IMP_CTL);
56 reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN);
57 reg &= ~(RX_DIS | TX_DIS);
58 core_writel(priv, reg, CORE_IMP_CTL);
60 /* Enable forwarding */
61 core_writel(priv, SW_FWDG_EN, CORE_SWMODE);
63 /* Enable IMP port in dumb mode */
64 reg = core_readl(priv, CORE_SWITCH_CTRL);
65 reg |= MII_DUMB_FWDG_EN;
66 core_writel(priv, reg, CORE_SWITCH_CTRL);
68 /* Configure Traffic Class to QoS mapping, allow each priority to map
69 * to a different queue number
71 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
72 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
73 reg |= i << (PRT_TO_QID_SHIFT * i);
74 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
76 b53_brcm_hdr_setup(ds, port);
78 /* Force link status for IMP port */
79 reg = core_readl(priv, offset);
80 reg |= (MII_SW_OR | LINK_STS);
81 core_writel(priv, reg, offset);
84 static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable)
86 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
89 reg = reg_readl(priv, REG_SPHY_CNTRL);
92 reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | IDDQ_GLOBAL_PWR | CK25_DIS);
93 reg_writel(priv, reg, REG_SPHY_CNTRL);
95 reg = reg_readl(priv, REG_SPHY_CNTRL);
98 reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET;
99 reg_writel(priv, reg, REG_SPHY_CNTRL);
103 reg_writel(priv, reg, REG_SPHY_CNTRL);
105 /* Use PHY-driven LED signaling */
107 reg = reg_readl(priv, REG_LED_CNTRL(0));
108 reg |= SPDLNK_SRC_SEL;
109 reg_writel(priv, reg, REG_LED_CNTRL(0));
113 static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv,
123 /* Port 0 interrupts are located on the first bank */
124 intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF));
127 off = P_IRQ_OFF(port);
131 intrl2_1_mask_clear(priv, P_IRQ_MASK(off));
134 static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv,
144 /* Port 0 interrupts are located on the first bank */
145 intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF));
146 intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR);
149 off = P_IRQ_OFF(port);
153 intrl2_1_mask_set(priv, P_IRQ_MASK(off));
154 intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR);
157 static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
158 struct phy_device *phy)
160 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
164 /* Clear the memory power down */
165 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
166 reg &= ~P_TXQ_PSM_VDD(port);
167 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
169 /* Enable learning */
170 reg = core_readl(priv, CORE_DIS_LEARN);
172 core_writel(priv, reg, CORE_DIS_LEARN);
174 /* Enable Broadcom tags for that port if requested */
175 if (priv->brcm_tag_mask & BIT(port))
176 b53_brcm_hdr_setup(ds, port);
178 /* Configure Traffic Class to QoS mapping, allow each priority to map
179 * to a different queue number
181 reg = core_readl(priv, CORE_PORT_TC2_QOS_MAP_PORT(port));
182 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++)
183 reg |= i << (PRT_TO_QID_SHIFT * i);
184 core_writel(priv, reg, CORE_PORT_TC2_QOS_MAP_PORT(port));
186 /* Re-enable the GPHY and re-apply workarounds */
187 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) {
188 bcm_sf2_gphy_enable_set(ds, true);
190 /* if phy_stop() has been called before, phy
191 * will be in halted state, and phy_start()
194 * the resume path does not configure back
195 * autoneg settings, and since we hard reset
196 * the phy manually here, we need to reset the
197 * state machine also.
199 phy->state = PHY_READY;
204 /* Enable MoCA port interrupts to get notified */
205 if (port == priv->moca_port)
206 bcm_sf2_port_intr_enable(priv, port);
208 /* Set per-queue pause threshold to 32 */
209 core_writel(priv, 32, CORE_TXQ_THD_PAUSE_QN_PORT(port));
211 /* Set ACB threshold to 24 */
212 for (i = 0; i < SF2_NUM_EGRESS_QUEUES; i++) {
213 reg = acb_readl(priv, ACB_QUEUE_CFG(port *
214 SF2_NUM_EGRESS_QUEUES + i));
215 reg &= ~XOFF_THRESHOLD_MASK;
217 acb_writel(priv, reg, ACB_QUEUE_CFG(port *
218 SF2_NUM_EGRESS_QUEUES + i));
221 return b53_enable_port(ds, port, phy);
224 static void bcm_sf2_port_disable(struct dsa_switch *ds, int port)
226 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
229 /* Disable learning while in WoL mode */
230 if (priv->wol_ports_mask & (1 << port)) {
231 reg = core_readl(priv, CORE_DIS_LEARN);
233 core_writel(priv, reg, CORE_DIS_LEARN);
237 if (port == priv->moca_port)
238 bcm_sf2_port_intr_disable(priv, port);
240 if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1)
241 bcm_sf2_gphy_enable_set(ds, false);
243 b53_disable_port(ds, port);
245 /* Power down the port memory */
246 reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL);
247 reg |= P_TXQ_PSM_VDD(port);
248 core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
252 static int bcm_sf2_sw_indir_rw(struct bcm_sf2_priv *priv, int op, int addr,
258 reg = reg_readl(priv, REG_SWITCH_CNTRL);
259 reg |= MDIO_MASTER_SEL;
260 reg_writel(priv, reg, REG_SWITCH_CNTRL);
262 /* Page << 8 | offset */
265 core_writel(priv, addr, reg);
267 /* Page << 8 | offset */
268 reg = 0x80 << 8 | regnum << 1;
272 ret = core_readl(priv, reg);
274 core_writel(priv, val, reg);
276 reg = reg_readl(priv, REG_SWITCH_CNTRL);
277 reg &= ~MDIO_MASTER_SEL;
278 reg_writel(priv, reg, REG_SWITCH_CNTRL);
283 static int bcm_sf2_sw_mdio_read(struct mii_bus *bus, int addr, int regnum)
285 struct bcm_sf2_priv *priv = bus->priv;
287 /* Intercept reads from Broadcom pseudo-PHY address, else, send
288 * them to our master MDIO bus controller
290 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
291 return bcm_sf2_sw_indir_rw(priv, 1, addr, regnum, 0);
293 return mdiobus_read_nested(priv->master_mii_bus, addr, regnum);
296 static int bcm_sf2_sw_mdio_write(struct mii_bus *bus, int addr, int regnum,
299 struct bcm_sf2_priv *priv = bus->priv;
301 /* Intercept writes to the Broadcom pseudo-PHY address, else,
302 * send them to our master MDIO bus controller
304 if (addr == BRCM_PSEUDO_PHY_ADDR && priv->indir_phy_mask & BIT(addr))
305 return bcm_sf2_sw_indir_rw(priv, 0, addr, regnum, val);
307 return mdiobus_write_nested(priv->master_mii_bus, addr,
311 static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id)
313 struct dsa_switch *ds = dev_id;
314 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
316 priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
318 intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR);
323 static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id)
325 struct dsa_switch *ds = dev_id;
326 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
328 priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
330 intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR);
332 if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF)) {
333 priv->port_sts[7].link = true;
334 dsa_port_phylink_mac_change(ds, 7, true);
336 if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF)) {
337 priv->port_sts[7].link = false;
338 dsa_port_phylink_mac_change(ds, 7, false);
344 static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv)
346 unsigned int timeout = 1000;
349 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
350 reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET;
351 core_writel(priv, reg, CORE_WATCHDOG_CTRL);
354 reg = core_readl(priv, CORE_WATCHDOG_CTRL);
355 if (!(reg & SOFTWARE_RESET))
358 usleep_range(1000, 2000);
359 } while (timeout-- > 0);
367 static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv)
369 intrl2_0_mask_set(priv, 0xffffffff);
370 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
371 intrl2_1_mask_set(priv, 0xffffffff);
372 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
375 static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv,
376 struct device_node *dn)
378 struct device_node *port;
380 unsigned int port_num;
382 priv->moca_port = -1;
384 for_each_available_child_of_node(dn, port) {
385 if (of_property_read_u32(port, "reg", &port_num))
388 /* Internal PHYs get assigned a specific 'phy-mode' property
389 * value: "internal" to help flag them before MDIO probing
390 * has completed, since they might be turned off at that
393 mode = of_get_phy_mode(port);
397 if (mode == PHY_INTERFACE_MODE_INTERNAL)
398 priv->int_phy_mask |= 1 << port_num;
400 if (mode == PHY_INTERFACE_MODE_MOCA)
401 priv->moca_port = port_num;
403 if (of_property_read_bool(port, "brcm,use-bcm-hdr"))
404 priv->brcm_tag_mask |= 1 << port_num;
408 static int bcm_sf2_mdio_register(struct dsa_switch *ds)
410 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
411 struct device_node *dn;
415 /* Find our integrated MDIO bus node */
416 dn = of_find_compatible_node(NULL, NULL, "brcm,unimac-mdio");
417 priv->master_mii_bus = of_mdio_find_bus(dn);
418 if (!priv->master_mii_bus)
419 return -EPROBE_DEFER;
421 get_device(&priv->master_mii_bus->dev);
422 priv->master_mii_dn = dn;
424 priv->slave_mii_bus = devm_mdiobus_alloc(ds->dev);
425 if (!priv->slave_mii_bus)
428 priv->slave_mii_bus->priv = priv;
429 priv->slave_mii_bus->name = "sf2 slave mii";
430 priv->slave_mii_bus->read = bcm_sf2_sw_mdio_read;
431 priv->slave_mii_bus->write = bcm_sf2_sw_mdio_write;
432 snprintf(priv->slave_mii_bus->id, MII_BUS_ID_SIZE, "sf2-%d",
434 priv->slave_mii_bus->dev.of_node = dn;
436 /* Include the pseudo-PHY address to divert reads towards our
437 * workaround. This is only required for 7445D0, since 7445E0
438 * disconnects the internal switch pseudo-PHY such that we can use the
439 * regular SWITCH_MDIO master controller instead.
441 * Here we flag the pseudo PHY as needing special treatment and would
442 * otherwise make all other PHY read/writes go to the master MDIO bus
443 * controller that comes with this switch backed by the "mdio-unimac"
446 if (of_machine_is_compatible("brcm,bcm7445d0"))
447 priv->indir_phy_mask |= (1 << BRCM_PSEUDO_PHY_ADDR);
449 priv->indir_phy_mask = 0;
451 ds->phys_mii_mask = priv->indir_phy_mask;
452 ds->slave_mii_bus = priv->slave_mii_bus;
453 priv->slave_mii_bus->parent = ds->dev->parent;
454 priv->slave_mii_bus->phy_mask = ~priv->indir_phy_mask;
456 err = of_mdiobus_register(priv->slave_mii_bus, dn);
463 static void bcm_sf2_mdio_unregister(struct bcm_sf2_priv *priv)
465 mdiobus_unregister(priv->slave_mii_bus);
466 of_node_put(priv->master_mii_dn);
469 static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port)
471 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
473 /* The BCM7xxx PHY driver expects to find the integrated PHY revision
474 * in bits 15:8 and the patch level in bits 7:0 which is exactly what
475 * the REG_PHY_REVISION register layout is.
478 return priv->hw_params.gphy_rev;
481 static void bcm_sf2_sw_validate(struct dsa_switch *ds, int port,
482 unsigned long *supported,
483 struct phylink_link_state *state)
485 __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
487 if (!phy_interface_mode_is_rgmii(state->interface) &&
488 state->interface != PHY_INTERFACE_MODE_MII &&
489 state->interface != PHY_INTERFACE_MODE_REVMII &&
490 state->interface != PHY_INTERFACE_MODE_GMII &&
491 state->interface != PHY_INTERFACE_MODE_INTERNAL &&
492 state->interface != PHY_INTERFACE_MODE_MOCA) {
493 bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
495 "Unsupported interface: %d\n", state->interface);
499 /* Allow all the expected bits */
500 phylink_set(mask, Autoneg);
501 phylink_set_port_modes(mask);
502 phylink_set(mask, Pause);
503 phylink_set(mask, Asym_Pause);
505 /* With the exclusion of MII and Reverse MII, we support Gigabit,
506 * including Half duplex
508 if (state->interface != PHY_INTERFACE_MODE_MII &&
509 state->interface != PHY_INTERFACE_MODE_REVMII) {
510 phylink_set(mask, 1000baseT_Full);
511 phylink_set(mask, 1000baseT_Half);
514 phylink_set(mask, 10baseT_Half);
515 phylink_set(mask, 10baseT_Full);
516 phylink_set(mask, 100baseT_Half);
517 phylink_set(mask, 100baseT_Full);
519 bitmap_and(supported, supported, mask,
520 __ETHTOOL_LINK_MODE_MASK_NBITS);
521 bitmap_and(state->advertising, state->advertising, mask,
522 __ETHTOOL_LINK_MODE_MASK_NBITS);
525 static void bcm_sf2_sw_mac_config(struct dsa_switch *ds, int port,
527 const struct phylink_link_state *state)
529 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
530 u32 id_mode_dis = 0, port_mode;
533 if (priv->type == BCM7445_DEVICE_ID)
534 offset = CORE_STS_OVERRIDE_GMIIP_PORT(port);
536 offset = CORE_STS_OVERRIDE_GMIIP2_PORT(port);
538 switch (state->interface) {
539 case PHY_INTERFACE_MODE_RGMII:
542 case PHY_INTERFACE_MODE_RGMII_TXID:
543 port_mode = EXT_GPHY;
545 case PHY_INTERFACE_MODE_MII:
546 port_mode = EXT_EPHY;
548 case PHY_INTERFACE_MODE_REVMII:
549 port_mode = EXT_REVMII;
552 /* all other PHYs: internal and MoCA */
556 /* Clear id_mode_dis bit, and the existing port mode, let
557 * RGMII_MODE_EN bet set by mac_link_{up,down}
559 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
561 reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT);
562 reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN);
568 if (state->pause & MLO_PAUSE_TXRX_MASK) {
569 if (state->pause & MLO_PAUSE_TX)
574 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
577 /* Force link settings detected from the PHY */
579 switch (state->speed) {
581 reg |= SPDSTS_1000 << SPEED_SHIFT;
584 reg |= SPDSTS_100 << SPEED_SHIFT;
590 if (state->duplex == DUPLEX_FULL)
593 core_writel(priv, reg, offset);
596 static void bcm_sf2_sw_mac_link_set(struct dsa_switch *ds, int port,
597 phy_interface_t interface, bool link)
599 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
602 if (!phy_interface_mode_is_rgmii(interface) &&
603 interface != PHY_INTERFACE_MODE_MII &&
604 interface != PHY_INTERFACE_MODE_REVMII)
607 /* If the link is down, just disable the interface to conserve power */
608 reg = reg_readl(priv, REG_RGMII_CNTRL_P(port));
610 reg |= RGMII_MODE_EN;
612 reg &= ~RGMII_MODE_EN;
613 reg_writel(priv, reg, REG_RGMII_CNTRL_P(port));
616 static void bcm_sf2_sw_mac_link_down(struct dsa_switch *ds, int port,
618 phy_interface_t interface)
620 bcm_sf2_sw_mac_link_set(ds, port, interface, false);
623 static void bcm_sf2_sw_mac_link_up(struct dsa_switch *ds, int port,
625 phy_interface_t interface,
626 struct phy_device *phydev)
628 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
629 struct ethtool_eee *p = &priv->dev->ports[port].eee;
631 bcm_sf2_sw_mac_link_set(ds, port, interface, true);
633 if (mode == MLO_AN_PHY && phydev)
634 p->eee_enabled = b53_eee_init(ds, port, phydev);
637 static void bcm_sf2_sw_fixed_state(struct dsa_switch *ds, int port,
638 struct phylink_link_state *status)
640 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
642 status->link = false;
644 /* MoCA port is special as we do not get link status from CORE_LNKSTS,
645 * which means that we need to force the link at the port override
646 * level to get the data to flow. We do use what the interrupt handler
647 * did determine before.
649 * For the other ports, we just force the link status, since this is
650 * a fixed PHY device.
652 if (port == priv->moca_port) {
653 status->link = priv->port_sts[port].link;
654 /* For MoCA interfaces, also force a link down notification
655 * since some version of the user-space daemon (mocad) use
656 * cmd->autoneg to force the link, which messes up the PHY
657 * state machine and make it go in PHY_FORCING state instead.
660 netif_carrier_off(ds->ports[port].slave);
661 status->duplex = DUPLEX_FULL;
667 static void bcm_sf2_enable_acb(struct dsa_switch *ds)
669 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
672 /* Enable ACB globally */
673 reg = acb_readl(priv, ACB_CONTROL);
674 reg |= (ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
675 acb_writel(priv, reg, ACB_CONTROL);
676 reg &= ~(ACB_FLUSH_MASK << ACB_FLUSH_SHIFT);
677 reg |= ACB_EN | ACB_ALGORITHM;
678 acb_writel(priv, reg, ACB_CONTROL);
681 static int bcm_sf2_sw_suspend(struct dsa_switch *ds)
683 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
686 bcm_sf2_intr_disable(priv);
688 /* Disable all ports physically present including the IMP
689 * port, the other ones have already been disabled during
692 for (port = 0; port < ds->num_ports; port++) {
693 if (dsa_is_user_port(ds, port) || dsa_is_cpu_port(ds, port))
694 bcm_sf2_port_disable(ds, port);
700 static int bcm_sf2_sw_resume(struct dsa_switch *ds)
702 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
705 ret = bcm_sf2_sw_rst(priv);
707 pr_err("%s: failed to software reset switch\n", __func__);
711 ret = bcm_sf2_cfp_resume(ds);
715 if (priv->hw_params.num_gphy == 1)
716 bcm_sf2_gphy_enable_set(ds, true);
723 static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port,
724 struct ethtool_wolinfo *wol)
726 struct net_device *p = ds->ports[port].cpu_dp->master;
727 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
728 struct ethtool_wolinfo pwol = { };
730 /* Get the parent device WoL settings */
731 if (p->ethtool_ops->get_wol)
732 p->ethtool_ops->get_wol(p, &pwol);
734 /* Advertise the parent device supported settings */
735 wol->supported = pwol.supported;
736 memset(&wol->sopass, 0, sizeof(wol->sopass));
738 if (pwol.wolopts & WAKE_MAGICSECURE)
739 memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass));
741 if (priv->wol_ports_mask & (1 << port))
742 wol->wolopts = pwol.wolopts;
747 static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port,
748 struct ethtool_wolinfo *wol)
750 struct net_device *p = ds->ports[port].cpu_dp->master;
751 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
752 s8 cpu_port = ds->ports[port].cpu_dp->index;
753 struct ethtool_wolinfo pwol = { };
755 if (p->ethtool_ops->get_wol)
756 p->ethtool_ops->get_wol(p, &pwol);
757 if (wol->wolopts & ~pwol.supported)
761 priv->wol_ports_mask |= (1 << port);
763 priv->wol_ports_mask &= ~(1 << port);
765 /* If we have at least one port enabled, make sure the CPU port
766 * is also enabled. If the CPU port is the last one enabled, we disable
767 * it since this configuration does not make sense.
769 if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port))
770 priv->wol_ports_mask |= (1 << cpu_port);
772 priv->wol_ports_mask &= ~(1 << cpu_port);
774 return p->ethtool_ops->set_wol(p, wol);
777 static int bcm_sf2_sw_setup(struct dsa_switch *ds)
779 struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds);
782 /* Enable all valid ports and disable those unused */
783 for (port = 0; port < priv->hw_params.num_ports; port++) {
784 /* IMP port receives special treatment */
785 if (dsa_is_user_port(ds, port))
786 bcm_sf2_port_setup(ds, port, NULL);
787 else if (dsa_is_cpu_port(ds, port))
788 bcm_sf2_imp_setup(ds, port);
790 bcm_sf2_port_disable(ds, port);
793 b53_configure_vlan(ds);
794 bcm_sf2_enable_acb(ds);
799 /* The SWITCH_CORE register space is managed by b53 but operates on a page +
800 * register basis so we need to translate that into an address that the
801 * bus-glue understands.
803 #define SF2_PAGE_REG_MKADDR(page, reg) ((page) << 10 | (reg) << 2)
805 static int bcm_sf2_core_read8(struct b53_device *dev, u8 page, u8 reg,
808 struct bcm_sf2_priv *priv = dev->priv;
810 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
815 static int bcm_sf2_core_read16(struct b53_device *dev, u8 page, u8 reg,
818 struct bcm_sf2_priv *priv = dev->priv;
820 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
825 static int bcm_sf2_core_read32(struct b53_device *dev, u8 page, u8 reg,
828 struct bcm_sf2_priv *priv = dev->priv;
830 *val = core_readl(priv, SF2_PAGE_REG_MKADDR(page, reg));
835 static int bcm_sf2_core_read64(struct b53_device *dev, u8 page, u8 reg,
838 struct bcm_sf2_priv *priv = dev->priv;
840 *val = core_readq(priv, SF2_PAGE_REG_MKADDR(page, reg));
845 static int bcm_sf2_core_write8(struct b53_device *dev, u8 page, u8 reg,
848 struct bcm_sf2_priv *priv = dev->priv;
850 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
855 static int bcm_sf2_core_write16(struct b53_device *dev, u8 page, u8 reg,
858 struct bcm_sf2_priv *priv = dev->priv;
860 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
865 static int bcm_sf2_core_write32(struct b53_device *dev, u8 page, u8 reg,
868 struct bcm_sf2_priv *priv = dev->priv;
870 core_writel(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
875 static int bcm_sf2_core_write64(struct b53_device *dev, u8 page, u8 reg,
878 struct bcm_sf2_priv *priv = dev->priv;
880 core_writeq(priv, value, SF2_PAGE_REG_MKADDR(page, reg));
885 static const struct b53_io_ops bcm_sf2_io_ops = {
886 .read8 = bcm_sf2_core_read8,
887 .read16 = bcm_sf2_core_read16,
888 .read32 = bcm_sf2_core_read32,
889 .read48 = bcm_sf2_core_read64,
890 .read64 = bcm_sf2_core_read64,
891 .write8 = bcm_sf2_core_write8,
892 .write16 = bcm_sf2_core_write16,
893 .write32 = bcm_sf2_core_write32,
894 .write48 = bcm_sf2_core_write64,
895 .write64 = bcm_sf2_core_write64,
898 static void bcm_sf2_sw_get_strings(struct dsa_switch *ds, int port,
899 u32 stringset, uint8_t *data)
901 int cnt = b53_get_sset_count(ds, port, stringset);
903 b53_get_strings(ds, port, stringset, data);
904 bcm_sf2_cfp_get_strings(ds, port, stringset,
905 data + cnt * ETH_GSTRING_LEN);
908 static void bcm_sf2_sw_get_ethtool_stats(struct dsa_switch *ds, int port,
911 int cnt = b53_get_sset_count(ds, port, ETH_SS_STATS);
913 b53_get_ethtool_stats(ds, port, data);
914 bcm_sf2_cfp_get_ethtool_stats(ds, port, data + cnt);
917 static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds, int port,
920 int cnt = b53_get_sset_count(ds, port, sset);
925 cnt += bcm_sf2_cfp_get_sset_count(ds, port, sset);
930 static const struct dsa_switch_ops bcm_sf2_ops = {
931 .get_tag_protocol = b53_get_tag_protocol,
932 .setup = bcm_sf2_sw_setup,
933 .get_strings = bcm_sf2_sw_get_strings,
934 .get_ethtool_stats = bcm_sf2_sw_get_ethtool_stats,
935 .get_sset_count = bcm_sf2_sw_get_sset_count,
936 .get_ethtool_phy_stats = b53_get_ethtool_phy_stats,
937 .get_phy_flags = bcm_sf2_sw_get_phy_flags,
938 .phylink_validate = bcm_sf2_sw_validate,
939 .phylink_mac_config = bcm_sf2_sw_mac_config,
940 .phylink_mac_link_down = bcm_sf2_sw_mac_link_down,
941 .phylink_mac_link_up = bcm_sf2_sw_mac_link_up,
942 .phylink_fixed_state = bcm_sf2_sw_fixed_state,
943 .suspend = bcm_sf2_sw_suspend,
944 .resume = bcm_sf2_sw_resume,
945 .get_wol = bcm_sf2_sw_get_wol,
946 .set_wol = bcm_sf2_sw_set_wol,
947 .port_enable = bcm_sf2_port_setup,
948 .port_disable = bcm_sf2_port_disable,
949 .get_mac_eee = b53_get_mac_eee,
950 .set_mac_eee = b53_set_mac_eee,
951 .port_bridge_join = b53_br_join,
952 .port_bridge_leave = b53_br_leave,
953 .port_stp_state_set = b53_br_set_stp_state,
954 .port_fast_age = b53_br_fast_age,
955 .port_vlan_filtering = b53_vlan_filtering,
956 .port_vlan_prepare = b53_vlan_prepare,
957 .port_vlan_add = b53_vlan_add,
958 .port_vlan_del = b53_vlan_del,
959 .port_fdb_dump = b53_fdb_dump,
960 .port_fdb_add = b53_fdb_add,
961 .port_fdb_del = b53_fdb_del,
962 .get_rxnfc = bcm_sf2_get_rxnfc,
963 .set_rxnfc = bcm_sf2_set_rxnfc,
964 .port_mirror_add = b53_mirror_add,
965 .port_mirror_del = b53_mirror_del,
968 struct bcm_sf2_of_data {
970 const u16 *reg_offsets;
971 unsigned int core_reg_align;
972 unsigned int num_cfp_rules;
975 /* Register offsets for the SWITCH_REG_* block */
976 static const u16 bcm_sf2_7445_reg_offsets[] = {
977 [REG_SWITCH_CNTRL] = 0x00,
978 [REG_SWITCH_STATUS] = 0x04,
979 [REG_DIR_DATA_WRITE] = 0x08,
980 [REG_DIR_DATA_READ] = 0x0C,
981 [REG_SWITCH_REVISION] = 0x18,
982 [REG_PHY_REVISION] = 0x1C,
983 [REG_SPHY_CNTRL] = 0x2C,
984 [REG_RGMII_0_CNTRL] = 0x34,
985 [REG_RGMII_1_CNTRL] = 0x40,
986 [REG_RGMII_2_CNTRL] = 0x4c,
987 [REG_LED_0_CNTRL] = 0x90,
988 [REG_LED_1_CNTRL] = 0x94,
989 [REG_LED_2_CNTRL] = 0x98,
992 static const struct bcm_sf2_of_data bcm_sf2_7445_data = {
993 .type = BCM7445_DEVICE_ID,
995 .reg_offsets = bcm_sf2_7445_reg_offsets,
996 .num_cfp_rules = 256,
999 static const u16 bcm_sf2_7278_reg_offsets[] = {
1000 [REG_SWITCH_CNTRL] = 0x00,
1001 [REG_SWITCH_STATUS] = 0x04,
1002 [REG_DIR_DATA_WRITE] = 0x08,
1003 [REG_DIR_DATA_READ] = 0x0c,
1004 [REG_SWITCH_REVISION] = 0x10,
1005 [REG_PHY_REVISION] = 0x14,
1006 [REG_SPHY_CNTRL] = 0x24,
1007 [REG_RGMII_0_CNTRL] = 0xe0,
1008 [REG_RGMII_1_CNTRL] = 0xec,
1009 [REG_RGMII_2_CNTRL] = 0xf8,
1010 [REG_LED_0_CNTRL] = 0x40,
1011 [REG_LED_1_CNTRL] = 0x4c,
1012 [REG_LED_2_CNTRL] = 0x58,
1015 static const struct bcm_sf2_of_data bcm_sf2_7278_data = {
1016 .type = BCM7278_DEVICE_ID,
1017 .core_reg_align = 1,
1018 .reg_offsets = bcm_sf2_7278_reg_offsets,
1019 .num_cfp_rules = 128,
1022 static const struct of_device_id bcm_sf2_of_match[] = {
1023 { .compatible = "brcm,bcm7445-switch-v4.0",
1024 .data = &bcm_sf2_7445_data
1026 { .compatible = "brcm,bcm7278-switch-v4.0",
1027 .data = &bcm_sf2_7278_data
1029 { .compatible = "brcm,bcm7278-switch-v4.8",
1030 .data = &bcm_sf2_7278_data
1034 MODULE_DEVICE_TABLE(of, bcm_sf2_of_match);
1036 static int bcm_sf2_sw_probe(struct platform_device *pdev)
1038 const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME;
1039 struct device_node *dn = pdev->dev.of_node;
1040 const struct of_device_id *of_id = NULL;
1041 const struct bcm_sf2_of_data *data;
1042 struct b53_platform_data *pdata;
1043 struct dsa_switch_ops *ops;
1044 struct bcm_sf2_priv *priv;
1045 struct b53_device *dev;
1046 struct dsa_switch *ds;
1047 void __iomem **base;
1053 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
1057 ops = devm_kzalloc(&pdev->dev, sizeof(*ops), GFP_KERNEL);
1061 dev = b53_switch_alloc(&pdev->dev, &bcm_sf2_io_ops, priv);
1065 pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
1069 of_id = of_match_node(bcm_sf2_of_match, dn);
1070 if (!of_id || !of_id->data)
1075 /* Set SWITCH_REG register offsets and SWITCH_CORE align factor */
1076 priv->type = data->type;
1077 priv->reg_offsets = data->reg_offsets;
1078 priv->core_reg_align = data->core_reg_align;
1079 priv->num_cfp_rules = data->num_cfp_rules;
1081 /* Auto-detection using standard registers will not work, so
1082 * provide an indication of what kind of device we are for
1083 * b53_common to work with
1085 pdata->chip_id = priv->type;
1090 ds->ops = &bcm_sf2_ops;
1092 /* Advertise the 8 egress queues */
1093 ds->num_tx_queues = SF2_NUM_EGRESS_QUEUES;
1095 dev_set_drvdata(&pdev->dev, priv);
1097 spin_lock_init(&priv->indir_lock);
1098 mutex_init(&priv->cfp.lock);
1099 INIT_LIST_HEAD(&priv->cfp.rules_list);
1101 /* CFP rule #0 cannot be used for specific classifications, flag it as
1104 set_bit(0, priv->cfp.used);
1105 set_bit(0, priv->cfp.unique);
1107 bcm_sf2_identify_ports(priv, dn->child);
1109 priv->irq0 = irq_of_parse_and_map(dn, 0);
1110 priv->irq1 = irq_of_parse_and_map(dn, 1);
1113 for (i = 0; i < BCM_SF2_REGS_NUM; i++) {
1114 r = platform_get_resource(pdev, IORESOURCE_MEM, i);
1115 *base = devm_ioremap_resource(&pdev->dev, r);
1116 if (IS_ERR(*base)) {
1117 pr_err("unable to find register: %s\n", reg_names[i]);
1118 return PTR_ERR(*base);
1123 ret = bcm_sf2_sw_rst(priv);
1125 pr_err("unable to software reset switch: %d\n", ret);
1129 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1131 ret = bcm_sf2_mdio_register(ds);
1133 pr_err("failed to register MDIO bus\n");
1137 bcm_sf2_gphy_enable_set(priv->dev->ds, false);
1139 ret = bcm_sf2_cfp_rst(priv);
1141 pr_err("failed to reset CFP\n");
1145 /* Disable all interrupts and request them */
1146 bcm_sf2_intr_disable(priv);
1148 ret = devm_request_irq(&pdev->dev, priv->irq0, bcm_sf2_switch_0_isr, 0,
1151 pr_err("failed to request switch_0 IRQ\n");
1155 ret = devm_request_irq(&pdev->dev, priv->irq1, bcm_sf2_switch_1_isr, 0,
1158 pr_err("failed to request switch_1 IRQ\n");
1162 /* Reset the MIB counters */
1163 reg = core_readl(priv, CORE_GMNCFGCFG);
1165 core_writel(priv, reg, CORE_GMNCFGCFG);
1166 reg &= ~RST_MIB_CNT;
1167 core_writel(priv, reg, CORE_GMNCFGCFG);
1169 /* Get the maximum number of ports for this switch */
1170 priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1;
1171 if (priv->hw_params.num_ports > DSA_MAX_PORTS)
1172 priv->hw_params.num_ports = DSA_MAX_PORTS;
1174 /* Assume a single GPHY setup if we can't read that property */
1175 if (of_property_read_u32(dn, "brcm,num-gphy",
1176 &priv->hw_params.num_gphy))
1177 priv->hw_params.num_gphy = 1;
1179 rev = reg_readl(priv, REG_SWITCH_REVISION);
1180 priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) &
1181 SWITCH_TOP_REV_MASK;
1182 priv->hw_params.core_rev = (rev & SF2_REV_MASK);
1184 rev = reg_readl(priv, REG_PHY_REVISION);
1185 priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK;
1187 ret = b53_switch_register(dev);
1191 pr_info("Starfighter 2 top: %x.%02x, core: %x.%02x base: 0x%p, IRQs: %d, %d\n",
1192 priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff,
1193 priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff,
1194 priv->core, priv->irq0, priv->irq1);
1199 bcm_sf2_mdio_unregister(priv);
1203 static int bcm_sf2_sw_remove(struct platform_device *pdev)
1205 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1207 priv->wol_ports_mask = 0;
1208 dsa_unregister_switch(priv->dev->ds);
1209 bcm_sf2_cfp_exit(priv->dev->ds);
1210 /* Disable all ports and interrupts */
1211 bcm_sf2_sw_suspend(priv->dev->ds);
1212 bcm_sf2_mdio_unregister(priv);
1217 static void bcm_sf2_sw_shutdown(struct platform_device *pdev)
1219 struct bcm_sf2_priv *priv = platform_get_drvdata(pdev);
1221 /* For a kernel about to be kexec'd we want to keep the GPHY on for a
1222 * successful MDIO bus scan to occur. If we did turn off the GPHY
1223 * before (e.g: port_disable), this will also power it back on.
1225 * Do not rely on kexec_in_progress, just power the PHY on.
1227 if (priv->hw_params.num_gphy == 1)
1228 bcm_sf2_gphy_enable_set(priv->dev->ds, true);
1231 #ifdef CONFIG_PM_SLEEP
1232 static int bcm_sf2_suspend(struct device *dev)
1234 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1236 return dsa_switch_suspend(priv->dev->ds);
1239 static int bcm_sf2_resume(struct device *dev)
1241 struct bcm_sf2_priv *priv = dev_get_drvdata(dev);
1243 return dsa_switch_resume(priv->dev->ds);
1245 #endif /* CONFIG_PM_SLEEP */
1247 static SIMPLE_DEV_PM_OPS(bcm_sf2_pm_ops,
1248 bcm_sf2_suspend, bcm_sf2_resume);
1251 static struct platform_driver bcm_sf2_driver = {
1252 .probe = bcm_sf2_sw_probe,
1253 .remove = bcm_sf2_sw_remove,
1254 .shutdown = bcm_sf2_sw_shutdown,
1257 .of_match_table = bcm_sf2_of_match,
1258 .pm = &bcm_sf2_pm_ops,
1261 module_platform_driver(bcm_sf2_driver);
1263 MODULE_AUTHOR("Broadcom Corporation");
1264 MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip");
1265 MODULE_LICENSE("GPL");
1266 MODULE_ALIAS("platform:brcm-sf2");