| /* |
| * Broadcom Starfighter 2 DSA switch driver |
| * |
| * Copyright (C) 2014, Broadcom Corporation |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <linux/list.h> |
| #include <linux/module.h> |
| #include <linux/netdevice.h> |
| #include <linux/interrupt.h> |
| #include <linux/platform_device.h> |
| #include <linux/of.h> |
| #include <linux/phy.h> |
| #include <linux/phy_fixed.h> |
| #include <linux/mii.h> |
| #include <linux/of.h> |
| #include <linux/of_irq.h> |
| #include <linux/of_address.h> |
| #include <linux/of_net.h> |
| #include <net/dsa.h> |
| #include <linux/ethtool.h> |
| #include <linux/if_bridge.h> |
| #include <linux/brcmphy.h> |
| #include <linux/etherdevice.h> |
| #include <net/switchdev.h> |
| |
| #include "bcm_sf2.h" |
| #include "bcm_sf2_regs.h" |
| |
| /* String, offset, and register size in bytes if different from 4 bytes */ |
| static const struct bcm_sf2_hw_stats bcm_sf2_mib[] = { |
| { "TxOctets", 0x000, 8 }, |
| { "TxDropPkts", 0x020 }, |
| { "TxQPKTQ0", 0x030 }, |
| { "TxBroadcastPkts", 0x040 }, |
| { "TxMulticastPkts", 0x050 }, |
| { "TxUnicastPKts", 0x060 }, |
| { "TxCollisions", 0x070 }, |
| { "TxSingleCollision", 0x080 }, |
| { "TxMultipleCollision", 0x090 }, |
| { "TxDeferredCollision", 0x0a0 }, |
| { "TxLateCollision", 0x0b0 }, |
| { "TxExcessiveCollision", 0x0c0 }, |
| { "TxFrameInDisc", 0x0d0 }, |
| { "TxPausePkts", 0x0e0 }, |
| { "TxQPKTQ1", 0x0f0 }, |
| { "TxQPKTQ2", 0x100 }, |
| { "TxQPKTQ3", 0x110 }, |
| { "TxQPKTQ4", 0x120 }, |
| { "TxQPKTQ5", 0x130 }, |
| { "RxOctets", 0x140, 8 }, |
| { "RxUndersizePkts", 0x160 }, |
| { "RxPausePkts", 0x170 }, |
| { "RxPkts64Octets", 0x180 }, |
| { "RxPkts65to127Octets", 0x190 }, |
| { "RxPkts128to255Octets", 0x1a0 }, |
| { "RxPkts256to511Octets", 0x1b0 }, |
| { "RxPkts512to1023Octets", 0x1c0 }, |
| { "RxPkts1024toMaxPktsOctets", 0x1d0 }, |
| { "RxOversizePkts", 0x1e0 }, |
| { "RxJabbers", 0x1f0 }, |
| { "RxAlignmentErrors", 0x200 }, |
| { "RxFCSErrors", 0x210 }, |
| { "RxGoodOctets", 0x220, 8 }, |
| { "RxDropPkts", 0x240 }, |
| { "RxUnicastPkts", 0x250 }, |
| { "RxMulticastPkts", 0x260 }, |
| { "RxBroadcastPkts", 0x270 }, |
| { "RxSAChanges", 0x280 }, |
| { "RxFragments", 0x290 }, |
| { "RxJumboPkt", 0x2a0 }, |
| { "RxSymblErr", 0x2b0 }, |
| { "InRangeErrCount", 0x2c0 }, |
| { "OutRangeErrCount", 0x2d0 }, |
| { "EEELpiEvent", 0x2e0 }, |
| { "EEELpiDuration", 0x2f0 }, |
| { "RxDiscard", 0x300, 8 }, |
| { "TxQPKTQ6", 0x320 }, |
| { "TxQPKTQ7", 0x330 }, |
| { "TxPkts64Octets", 0x340 }, |
| { "TxPkts65to127Octets", 0x350 }, |
| { "TxPkts128to255Octets", 0x360 }, |
| { "TxPkts256to511Ocets", 0x370 }, |
| { "TxPkts512to1023Ocets", 0x380 }, |
| { "TxPkts1024toMaxPktOcets", 0x390 }, |
| }; |
| |
| #define BCM_SF2_STATS_SIZE ARRAY_SIZE(bcm_sf2_mib) |
| |
| static void bcm_sf2_sw_get_strings(struct dsa_switch *ds, |
| int port, uint8_t *data) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < BCM_SF2_STATS_SIZE; i++) |
| memcpy(data + i * ETH_GSTRING_LEN, |
| bcm_sf2_mib[i].string, ETH_GSTRING_LEN); |
| } |
| |
| static void bcm_sf2_sw_get_ethtool_stats(struct dsa_switch *ds, |
| int port, uint64_t *data) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| const struct bcm_sf2_hw_stats *s; |
| unsigned int i; |
| u64 val = 0; |
| u32 offset; |
| |
| mutex_lock(&priv->stats_mutex); |
| |
| /* Now fetch the per-port counters */ |
| for (i = 0; i < BCM_SF2_STATS_SIZE; i++) { |
| s = &bcm_sf2_mib[i]; |
| |
| /* Do a latched 64-bit read if needed */ |
| offset = s->reg + CORE_P_MIB_OFFSET(port); |
| if (s->sizeof_stat == 8) |
| val = core_readq(priv, offset); |
| else |
| val = core_readl(priv, offset); |
| |
| data[i] = (u64)val; |
| } |
| |
| mutex_unlock(&priv->stats_mutex); |
| } |
| |
| static int bcm_sf2_sw_get_sset_count(struct dsa_switch *ds) |
| { |
| return BCM_SF2_STATS_SIZE; |
| } |
| |
| static const char *bcm_sf2_sw_drv_probe(struct device *dsa_dev, |
| struct device *host_dev, int sw_addr, |
| void **_priv) |
| { |
| struct bcm_sf2_priv *priv; |
| |
| priv = devm_kzalloc(dsa_dev, sizeof(*priv), GFP_KERNEL); |
| if (!priv) |
| return NULL; |
| *_priv = priv; |
| |
| return "Broadcom Starfighter 2"; |
| } |
| |
| static void bcm_sf2_imp_vlan_setup(struct dsa_switch *ds, int cpu_port) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| unsigned int i; |
| u32 reg; |
| |
| /* Enable the IMP Port to be in the same VLAN as the other ports |
| * on a per-port basis such that we only have Port i and IMP in |
| * the same VLAN. |
| */ |
| for (i = 0; i < priv->hw_params.num_ports; i++) { |
| if (!((1 << i) & ds->enabled_port_mask)) |
| continue; |
| |
| reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i)); |
| reg |= (1 << cpu_port); |
| core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i)); |
| } |
| } |
| |
| static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| u32 reg, val; |
| |
| /* Enable the port memories */ |
| reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL); |
| reg &= ~P_TXQ_PSM_VDD(port); |
| core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL); |
| |
| /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */ |
| reg = core_readl(priv, CORE_IMP_CTL); |
| reg |= (RX_BCST_EN | RX_MCST_EN | RX_UCST_EN); |
| reg &= ~(RX_DIS | TX_DIS); |
| core_writel(priv, reg, CORE_IMP_CTL); |
| |
| /* Enable forwarding */ |
| core_writel(priv, SW_FWDG_EN, CORE_SWMODE); |
| |
| /* Enable IMP port in dumb mode */ |
| reg = core_readl(priv, CORE_SWITCH_CTRL); |
| reg |= MII_DUMB_FWDG_EN; |
| core_writel(priv, reg, CORE_SWITCH_CTRL); |
| |
| /* Resolve which bit controls the Broadcom tag */ |
| switch (port) { |
| case 8: |
| val = BRCM_HDR_EN_P8; |
| break; |
| case 7: |
| val = BRCM_HDR_EN_P7; |
| break; |
| case 5: |
| val = BRCM_HDR_EN_P5; |
| break; |
| default: |
| val = 0; |
| break; |
| } |
| |
| /* Enable Broadcom tags for IMP port */ |
| reg = core_readl(priv, CORE_BRCM_HDR_CTRL); |
| reg |= val; |
| core_writel(priv, reg, CORE_BRCM_HDR_CTRL); |
| |
| /* Enable reception Broadcom tag for CPU TX (switch RX) to |
| * allow us to tag outgoing frames |
| */ |
| reg = core_readl(priv, CORE_BRCM_HDR_RX_DIS); |
| reg &= ~(1 << port); |
| core_writel(priv, reg, CORE_BRCM_HDR_RX_DIS); |
| |
| /* Enable transmission of Broadcom tags from the switch (CPU RX) to |
| * allow delivering frames to the per-port net_devices |
| */ |
| reg = core_readl(priv, CORE_BRCM_HDR_TX_DIS); |
| reg &= ~(1 << port); |
| core_writel(priv, reg, CORE_BRCM_HDR_TX_DIS); |
| |
| /* Force link status for IMP port */ |
| reg = core_readl(priv, CORE_STS_OVERRIDE_IMP); |
| reg |= (MII_SW_OR | LINK_STS); |
| core_writel(priv, reg, CORE_STS_OVERRIDE_IMP); |
| } |
| |
| static void bcm_sf2_eee_enable_set(struct dsa_switch *ds, int port, bool enable) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| u32 reg; |
| |
| reg = core_readl(priv, CORE_EEE_EN_CTRL); |
| if (enable) |
| reg |= 1 << port; |
| else |
| reg &= ~(1 << port); |
| core_writel(priv, reg, CORE_EEE_EN_CTRL); |
| } |
| |
| static void bcm_sf2_gphy_enable_set(struct dsa_switch *ds, bool enable) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| u32 reg; |
| |
| reg = reg_readl(priv, REG_SPHY_CNTRL); |
| if (enable) { |
| reg |= PHY_RESET; |
| reg &= ~(EXT_PWR_DOWN | IDDQ_BIAS | CK25_DIS); |
| reg_writel(priv, reg, REG_SPHY_CNTRL); |
| udelay(21); |
| reg = reg_readl(priv, REG_SPHY_CNTRL); |
| reg &= ~PHY_RESET; |
| } else { |
| reg |= EXT_PWR_DOWN | IDDQ_BIAS | PHY_RESET; |
| reg_writel(priv, reg, REG_SPHY_CNTRL); |
| mdelay(1); |
| reg |= CK25_DIS; |
| } |
| reg_writel(priv, reg, REG_SPHY_CNTRL); |
| |
| /* Use PHY-driven LED signaling */ |
| if (!enable) { |
| reg = reg_readl(priv, REG_LED_CNTRL(0)); |
| reg |= SPDLNK_SRC_SEL; |
| reg_writel(priv, reg, REG_LED_CNTRL(0)); |
| } |
| } |
| |
| static inline void bcm_sf2_port_intr_enable(struct bcm_sf2_priv *priv, |
| int port) |
| { |
| unsigned int off; |
| |
| switch (port) { |
| case 7: |
| off = P7_IRQ_OFF; |
| break; |
| case 0: |
| /* Port 0 interrupts are located on the first bank */ |
| intrl2_0_mask_clear(priv, P_IRQ_MASK(P0_IRQ_OFF)); |
| return; |
| default: |
| off = P_IRQ_OFF(port); |
| break; |
| } |
| |
| intrl2_1_mask_clear(priv, P_IRQ_MASK(off)); |
| } |
| |
| static inline void bcm_sf2_port_intr_disable(struct bcm_sf2_priv *priv, |
| int port) |
| { |
| unsigned int off; |
| |
| switch (port) { |
| case 7: |
| off = P7_IRQ_OFF; |
| break; |
| case 0: |
| /* Port 0 interrupts are located on the first bank */ |
| intrl2_0_mask_set(priv, P_IRQ_MASK(P0_IRQ_OFF)); |
| intrl2_0_writel(priv, P_IRQ_MASK(P0_IRQ_OFF), INTRL2_CPU_CLEAR); |
| return; |
| default: |
| off = P_IRQ_OFF(port); |
| break; |
| } |
| |
| intrl2_1_mask_set(priv, P_IRQ_MASK(off)); |
| intrl2_1_writel(priv, P_IRQ_MASK(off), INTRL2_CPU_CLEAR); |
| } |
| |
| static int bcm_sf2_port_setup(struct dsa_switch *ds, int port, |
| struct phy_device *phy) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| s8 cpu_port = ds->dst[ds->index].cpu_port; |
| u32 reg; |
| |
| /* Clear the memory power down */ |
| reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL); |
| reg &= ~P_TXQ_PSM_VDD(port); |
| core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL); |
| |
| /* Clear the Rx and Tx disable bits and set to no spanning tree */ |
| core_writel(priv, 0, CORE_G_PCTL_PORT(port)); |
| |
| /* Re-enable the GPHY and re-apply workarounds */ |
| if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) { |
| bcm_sf2_gphy_enable_set(ds, true); |
| if (phy) { |
| /* if phy_stop() has been called before, phy |
| * will be in halted state, and phy_start() |
| * will call resume. |
| * |
| * the resume path does not configure back |
| * autoneg settings, and since we hard reset |
| * the phy manually here, we need to reset the |
| * state machine also. |
| */ |
| phy->state = PHY_READY; |
| phy_init_hw(phy); |
| } |
| } |
| |
| /* Enable MoCA port interrupts to get notified */ |
| if (port == priv->moca_port) |
| bcm_sf2_port_intr_enable(priv, port); |
| |
| /* Set this port, and only this one to be in the default VLAN, |
| * if member of a bridge, restore its membership prior to |
| * bringing down this port. |
| */ |
| reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port)); |
| reg &= ~PORT_VLAN_CTRL_MASK; |
| reg |= (1 << port); |
| reg |= priv->port_sts[port].vlan_ctl_mask; |
| core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(port)); |
| |
| bcm_sf2_imp_vlan_setup(ds, cpu_port); |
| |
| /* If EEE was enabled, restore it */ |
| if (priv->port_sts[port].eee.eee_enabled) |
| bcm_sf2_eee_enable_set(ds, port, true); |
| |
| return 0; |
| } |
| |
| static void bcm_sf2_port_disable(struct dsa_switch *ds, int port, |
| struct phy_device *phy) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| u32 off, reg; |
| |
| if (priv->wol_ports_mask & (1 << port)) |
| return; |
| |
| if (port == priv->moca_port) |
| bcm_sf2_port_intr_disable(priv, port); |
| |
| if (priv->int_phy_mask & 1 << port && priv->hw_params.num_gphy == 1) |
| bcm_sf2_gphy_enable_set(ds, false); |
| |
| if (dsa_is_cpu_port(ds, port)) |
| off = CORE_IMP_CTL; |
| else |
| off = CORE_G_PCTL_PORT(port); |
| |
| reg = core_readl(priv, off); |
| reg |= RX_DIS | TX_DIS; |
| core_writel(priv, reg, off); |
| |
| /* Power down the port memory */ |
| reg = core_readl(priv, CORE_MEM_PSM_VDD_CTRL); |
| reg |= P_TXQ_PSM_VDD(port); |
| core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL); |
| } |
| |
| /* Returns 0 if EEE was not enabled, or 1 otherwise |
| */ |
| static int bcm_sf2_eee_init(struct dsa_switch *ds, int port, |
| struct phy_device *phy) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| struct ethtool_eee *p = &priv->port_sts[port].eee; |
| int ret; |
| |
| p->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_100baseT_Full); |
| |
| ret = phy_init_eee(phy, 0); |
| if (ret) |
| return 0; |
| |
| bcm_sf2_eee_enable_set(ds, port, true); |
| |
| return 1; |
| } |
| |
| static int bcm_sf2_sw_get_eee(struct dsa_switch *ds, int port, |
| struct ethtool_eee *e) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| struct ethtool_eee *p = &priv->port_sts[port].eee; |
| u32 reg; |
| |
| reg = core_readl(priv, CORE_EEE_LPI_INDICATE); |
| e->eee_enabled = p->eee_enabled; |
| e->eee_active = !!(reg & (1 << port)); |
| |
| return 0; |
| } |
| |
| static int bcm_sf2_sw_set_eee(struct dsa_switch *ds, int port, |
| struct phy_device *phydev, |
| struct ethtool_eee *e) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| struct ethtool_eee *p = &priv->port_sts[port].eee; |
| |
| p->eee_enabled = e->eee_enabled; |
| |
| if (!p->eee_enabled) { |
| bcm_sf2_eee_enable_set(ds, port, false); |
| } else { |
| p->eee_enabled = bcm_sf2_eee_init(ds, port, phydev); |
| if (!p->eee_enabled) |
| return -EOPNOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| /* Fast-ageing of ARL entries for a given port, equivalent to an ARL |
| * flush for that port. |
| */ |
| static int bcm_sf2_sw_fast_age_port(struct dsa_switch *ds, int port) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| unsigned int timeout = 1000; |
| u32 reg; |
| |
| core_writel(priv, port, CORE_FAST_AGE_PORT); |
| |
| reg = core_readl(priv, CORE_FAST_AGE_CTRL); |
| reg |= EN_AGE_PORT | EN_AGE_DYNAMIC | FAST_AGE_STR_DONE; |
| core_writel(priv, reg, CORE_FAST_AGE_CTRL); |
| |
| do { |
| reg = core_readl(priv, CORE_FAST_AGE_CTRL); |
| if (!(reg & FAST_AGE_STR_DONE)) |
| break; |
| |
| cpu_relax(); |
| } while (timeout--); |
| |
| if (!timeout) |
| return -ETIMEDOUT; |
| |
| core_writel(priv, 0, CORE_FAST_AGE_CTRL); |
| |
| return 0; |
| } |
| |
| static int bcm_sf2_sw_br_join(struct dsa_switch *ds, int port, |
| struct net_device *bridge) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| unsigned int i; |
| u32 reg, p_ctl; |
| |
| priv->port_sts[port].bridge_dev = bridge; |
| p_ctl = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port)); |
| |
| for (i = 0; i < priv->hw_params.num_ports; i++) { |
| if (priv->port_sts[i].bridge_dev != bridge) |
| continue; |
| |
| /* Add this local port to the remote port VLAN control |
| * membership and update the remote port bitmask |
| */ |
| reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i)); |
| reg |= 1 << port; |
| core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i)); |
| priv->port_sts[i].vlan_ctl_mask = reg; |
| |
| p_ctl |= 1 << i; |
| } |
| |
| /* Configure the local port VLAN control membership to include |
| * remote ports and update the local port bitmask |
| */ |
| core_writel(priv, p_ctl, CORE_PORT_VLAN_CTL_PORT(port)); |
| priv->port_sts[port].vlan_ctl_mask = p_ctl; |
| |
| return 0; |
| } |
| |
| static void bcm_sf2_sw_br_leave(struct dsa_switch *ds, int port) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| struct net_device *bridge = priv->port_sts[port].bridge_dev; |
| unsigned int i; |
| u32 reg, p_ctl; |
| |
| p_ctl = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port)); |
| |
| for (i = 0; i < priv->hw_params.num_ports; i++) { |
| /* Don't touch the remaining ports */ |
| if (priv->port_sts[i].bridge_dev != bridge) |
| continue; |
| |
| reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i)); |
| reg &= ~(1 << port); |
| core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i)); |
| priv->port_sts[port].vlan_ctl_mask = reg; |
| |
| /* Prevent self removal to preserve isolation */ |
| if (port != i) |
| p_ctl &= ~(1 << i); |
| } |
| |
| core_writel(priv, p_ctl, CORE_PORT_VLAN_CTL_PORT(port)); |
| priv->port_sts[port].vlan_ctl_mask = p_ctl; |
| priv->port_sts[port].bridge_dev = NULL; |
| } |
| |
| static void bcm_sf2_sw_br_set_stp_state(struct dsa_switch *ds, int port, |
| u8 state) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| u8 hw_state, cur_hw_state; |
| u32 reg; |
| |
| reg = core_readl(priv, CORE_G_PCTL_PORT(port)); |
| cur_hw_state = reg & (G_MISTP_STATE_MASK << G_MISTP_STATE_SHIFT); |
| |
| switch (state) { |
| case BR_STATE_DISABLED: |
| hw_state = G_MISTP_DIS_STATE; |
| break; |
| case BR_STATE_LISTENING: |
| hw_state = G_MISTP_LISTEN_STATE; |
| break; |
| case BR_STATE_LEARNING: |
| hw_state = G_MISTP_LEARN_STATE; |
| break; |
| case BR_STATE_FORWARDING: |
| hw_state = G_MISTP_FWD_STATE; |
| break; |
| case BR_STATE_BLOCKING: |
| hw_state = G_MISTP_BLOCK_STATE; |
| break; |
| default: |
| pr_err("%s: invalid STP state: %d\n", __func__, state); |
| return; |
| } |
| |
| /* Fast-age ARL entries if we are moving a port from Learning or |
| * Forwarding (cur_hw_state) state to Disabled, Blocking or Listening |
| * state (hw_state) |
| */ |
| if (cur_hw_state != hw_state) { |
| if (cur_hw_state >= G_MISTP_LEARN_STATE && |
| hw_state <= G_MISTP_LISTEN_STATE) { |
| if (bcm_sf2_sw_fast_age_port(ds, port)) { |
| pr_err("%s: fast-ageing failed\n", __func__); |
| return; |
| } |
| } |
| } |
| |
| reg = core_readl(priv, CORE_G_PCTL_PORT(port)); |
| reg &= ~(G_MISTP_STATE_MASK << G_MISTP_STATE_SHIFT); |
| reg |= hw_state; |
| core_writel(priv, reg, CORE_G_PCTL_PORT(port)); |
| } |
| |
| /* Address Resolution Logic routines */ |
| static int bcm_sf2_arl_op_wait(struct bcm_sf2_priv *priv) |
| { |
| unsigned int timeout = 10; |
| u32 reg; |
| |
| do { |
| reg = core_readl(priv, CORE_ARLA_RWCTL); |
| if (!(reg & ARL_STRTDN)) |
| return 0; |
| |
| usleep_range(1000, 2000); |
| } while (timeout--); |
| |
| return -ETIMEDOUT; |
| } |
| |
| static int bcm_sf2_arl_rw_op(struct bcm_sf2_priv *priv, unsigned int op) |
| { |
| u32 cmd; |
| |
| if (op > ARL_RW) |
| return -EINVAL; |
| |
| cmd = core_readl(priv, CORE_ARLA_RWCTL); |
| cmd &= ~IVL_SVL_SELECT; |
| cmd |= ARL_STRTDN; |
| if (op) |
| cmd |= ARL_RW; |
| else |
| cmd &= ~ARL_RW; |
| core_writel(priv, cmd, CORE_ARLA_RWCTL); |
| |
| return bcm_sf2_arl_op_wait(priv); |
| } |
| |
| static int bcm_sf2_arl_read(struct bcm_sf2_priv *priv, u64 mac, |
| u16 vid, struct bcm_sf2_arl_entry *ent, u8 *idx, |
| bool is_valid) |
| { |
| unsigned int i; |
| int ret; |
| |
| ret = bcm_sf2_arl_op_wait(priv); |
| if (ret) |
| return ret; |
| |
| /* Read the 4 bins */ |
| for (i = 0; i < 4; i++) { |
| u64 mac_vid; |
| u32 fwd_entry; |
| |
| mac_vid = core_readq(priv, CORE_ARLA_MACVID_ENTRY(i)); |
| fwd_entry = core_readl(priv, CORE_ARLA_FWD_ENTRY(i)); |
| bcm_sf2_arl_to_entry(ent, mac_vid, fwd_entry); |
| |
| if (ent->is_valid && is_valid) { |
| *idx = i; |
| return 0; |
| } |
| |
| /* This is the MAC we just deleted */ |
| if (!is_valid && (mac_vid & mac)) |
| return 0; |
| } |
| |
| return -ENOENT; |
| } |
| |
| static int bcm_sf2_arl_op(struct bcm_sf2_priv *priv, int op, int port, |
| const unsigned char *addr, u16 vid, bool is_valid) |
| { |
| struct bcm_sf2_arl_entry ent; |
| u32 fwd_entry; |
| u64 mac, mac_vid = 0; |
| u8 idx = 0; |
| int ret; |
| |
| /* Convert the array into a 64-bit MAC */ |
| mac = bcm_sf2_mac_to_u64(addr); |
| |
| /* Perform a read for the given MAC and VID */ |
| core_writeq(priv, mac, CORE_ARLA_MAC); |
| core_writel(priv, vid, CORE_ARLA_VID); |
| |
| /* Issue a read operation for this MAC */ |
| ret = bcm_sf2_arl_rw_op(priv, 1); |
| if (ret) |
| return ret; |
| |
| ret = bcm_sf2_arl_read(priv, mac, vid, &ent, &idx, is_valid); |
| /* If this is a read, just finish now */ |
| if (op) |
| return ret; |
| |
| /* We could not find a matching MAC, so reset to a new entry */ |
| if (ret) { |
| fwd_entry = 0; |
| idx = 0; |
| } |
| |
| memset(&ent, 0, sizeof(ent)); |
| ent.port = port; |
| ent.is_valid = is_valid; |
| ent.vid = vid; |
| ent.is_static = true; |
| memcpy(ent.mac, addr, ETH_ALEN); |
| bcm_sf2_arl_from_entry(&mac_vid, &fwd_entry, &ent); |
| |
| core_writeq(priv, mac_vid, CORE_ARLA_MACVID_ENTRY(idx)); |
| core_writel(priv, fwd_entry, CORE_ARLA_FWD_ENTRY(idx)); |
| |
| ret = bcm_sf2_arl_rw_op(priv, 0); |
| if (ret) |
| return ret; |
| |
| /* Re-read the entry to check */ |
| return bcm_sf2_arl_read(priv, mac, vid, &ent, &idx, is_valid); |
| } |
| |
| static int bcm_sf2_sw_fdb_prepare(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_fdb *fdb, |
| struct switchdev_trans *trans) |
| { |
| /* We do not need to do anything specific here yet */ |
| return 0; |
| } |
| |
| static void bcm_sf2_sw_fdb_add(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_fdb *fdb, |
| struct switchdev_trans *trans) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| |
| if (bcm_sf2_arl_op(priv, 0, port, fdb->addr, fdb->vid, true)) |
| pr_err("%s: failed to add MAC address\n", __func__); |
| } |
| |
| static int bcm_sf2_sw_fdb_del(struct dsa_switch *ds, int port, |
| const struct switchdev_obj_port_fdb *fdb) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| |
| return bcm_sf2_arl_op(priv, 0, port, fdb->addr, fdb->vid, false); |
| } |
| |
| static int bcm_sf2_arl_search_wait(struct bcm_sf2_priv *priv) |
| { |
| unsigned timeout = 1000; |
| u32 reg; |
| |
| do { |
| reg = core_readl(priv, CORE_ARLA_SRCH_CTL); |
| if (!(reg & ARLA_SRCH_STDN)) |
| return 0; |
| |
| if (reg & ARLA_SRCH_VLID) |
| return 0; |
| |
| usleep_range(1000, 2000); |
| } while (timeout--); |
| |
| return -ETIMEDOUT; |
| } |
| |
| static void bcm_sf2_arl_search_rd(struct bcm_sf2_priv *priv, u8 idx, |
| struct bcm_sf2_arl_entry *ent) |
| { |
| u64 mac_vid; |
| u32 fwd_entry; |
| |
| mac_vid = core_readq(priv, CORE_ARLA_SRCH_RSLT_MACVID(idx)); |
| fwd_entry = core_readl(priv, CORE_ARLA_SRCH_RSLT(idx)); |
| bcm_sf2_arl_to_entry(ent, mac_vid, fwd_entry); |
| } |
| |
| static int bcm_sf2_sw_fdb_copy(struct net_device *dev, int port, |
| const struct bcm_sf2_arl_entry *ent, |
| struct switchdev_obj_port_fdb *fdb, |
| int (*cb)(struct switchdev_obj *obj)) |
| { |
| if (!ent->is_valid) |
| return 0; |
| |
| if (port != ent->port) |
| return 0; |
| |
| ether_addr_copy(fdb->addr, ent->mac); |
| fdb->vid = ent->vid; |
| fdb->ndm_state = ent->is_static ? NUD_NOARP : NUD_REACHABLE; |
| |
| return cb(&fdb->obj); |
| } |
| |
| static int bcm_sf2_sw_fdb_dump(struct dsa_switch *ds, int port, |
| struct switchdev_obj_port_fdb *fdb, |
| int (*cb)(struct switchdev_obj *obj)) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| struct net_device *dev = ds->ports[port]; |
| struct bcm_sf2_arl_entry results[2]; |
| unsigned int count = 0; |
| int ret; |
| |
| /* Start search operation */ |
| core_writel(priv, ARLA_SRCH_STDN, CORE_ARLA_SRCH_CTL); |
| |
| do { |
| ret = bcm_sf2_arl_search_wait(priv); |
| if (ret) |
| return ret; |
| |
| /* Read both entries, then return their values back */ |
| bcm_sf2_arl_search_rd(priv, 0, &results[0]); |
| ret = bcm_sf2_sw_fdb_copy(dev, port, &results[0], fdb, cb); |
| if (ret) |
| return ret; |
| |
| bcm_sf2_arl_search_rd(priv, 1, &results[1]); |
| ret = bcm_sf2_sw_fdb_copy(dev, port, &results[1], fdb, cb); |
| if (ret) |
| return ret; |
| |
| if (!results[0].is_valid && !results[1].is_valid) |
| break; |
| |
| } while (count++ < CORE_ARLA_NUM_ENTRIES); |
| |
| return 0; |
| } |
| |
| static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id) |
| { |
| struct bcm_sf2_priv *priv = dev_id; |
| |
| priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) & |
| ~priv->irq0_mask; |
| intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t bcm_sf2_switch_1_isr(int irq, void *dev_id) |
| { |
| struct bcm_sf2_priv *priv = dev_id; |
| |
| priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) & |
| ~priv->irq1_mask; |
| intrl2_1_writel(priv, priv->irq1_stat, INTRL2_CPU_CLEAR); |
| |
| if (priv->irq1_stat & P_LINK_UP_IRQ(P7_IRQ_OFF)) |
| priv->port_sts[7].link = 1; |
| if (priv->irq1_stat & P_LINK_DOWN_IRQ(P7_IRQ_OFF)) |
| priv->port_sts[7].link = 0; |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int bcm_sf2_sw_rst(struct bcm_sf2_priv *priv) |
| { |
| unsigned int timeout = 1000; |
| u32 reg; |
| |
| reg = core_readl(priv, CORE_WATCHDOG_CTRL); |
| reg |= SOFTWARE_RESET | EN_CHIP_RST | EN_SW_RESET; |
| core_writel(priv, reg, CORE_WATCHDOG_CTRL); |
| |
| do { |
| reg = core_readl(priv, CORE_WATCHDOG_CTRL); |
| if (!(reg & SOFTWARE_RESET)) |
| break; |
| |
| usleep_range(1000, 2000); |
| } while (timeout-- > 0); |
| |
| if (timeout == 0) |
| return -ETIMEDOUT; |
| |
| return 0; |
| } |
| |
| static void bcm_sf2_intr_disable(struct bcm_sf2_priv *priv) |
| { |
| intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET); |
| intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR); |
| intrl2_0_writel(priv, 0, INTRL2_CPU_MASK_CLEAR); |
| intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_MASK_SET); |
| intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR); |
| intrl2_1_writel(priv, 0, INTRL2_CPU_MASK_CLEAR); |
| } |
| |
| static void bcm_sf2_identify_ports(struct bcm_sf2_priv *priv, |
| struct device_node *dn) |
| { |
| struct device_node *port; |
| const char *phy_mode_str; |
| int mode; |
| unsigned int port_num; |
| int ret; |
| |
| priv->moca_port = -1; |
| |
| for_each_available_child_of_node(dn, port) { |
| if (of_property_read_u32(port, "reg", &port_num)) |
| continue; |
| |
| /* Internal PHYs get assigned a specific 'phy-mode' property |
| * value: "internal" to help flag them before MDIO probing |
| * has completed, since they might be turned off at that |
| * time |
| */ |
| mode = of_get_phy_mode(port); |
| if (mode < 0) { |
| ret = of_property_read_string(port, "phy-mode", |
| &phy_mode_str); |
| if (ret < 0) |
| continue; |
| |
| if (!strcasecmp(phy_mode_str, "internal")) |
| priv->int_phy_mask |= 1 << port_num; |
| } |
| |
| if (mode == PHY_INTERFACE_MODE_MOCA) |
| priv->moca_port = port_num; |
| } |
| } |
| |
| static int bcm_sf2_sw_setup(struct dsa_switch *ds) |
| { |
| const char *reg_names[BCM_SF2_REGS_NUM] = BCM_SF2_REGS_NAME; |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| struct device_node *dn; |
| void __iomem **base; |
| unsigned int port; |
| unsigned int i; |
| u32 reg, rev; |
| int ret; |
| |
| spin_lock_init(&priv->indir_lock); |
| mutex_init(&priv->stats_mutex); |
| |
| /* All the interesting properties are at the parent device_node |
| * level |
| */ |
| dn = ds->cd->of_node->parent; |
| bcm_sf2_identify_ports(priv, ds->cd->of_node); |
| |
| priv->irq0 = irq_of_parse_and_map(dn, 0); |
| priv->irq1 = irq_of_parse_and_map(dn, 1); |
| |
| base = &priv->core; |
| for (i = 0; i < BCM_SF2_REGS_NUM; i++) { |
| *base = of_iomap(dn, i); |
| if (*base == NULL) { |
| pr_err("unable to find register: %s\n", reg_names[i]); |
| ret = -ENOMEM; |
| goto out_unmap; |
| } |
| base++; |
| } |
| |
| ret = bcm_sf2_sw_rst(priv); |
| if (ret) { |
| pr_err("unable to software reset switch: %d\n", ret); |
| goto out_unmap; |
| } |
| |
| /* Disable all interrupts and request them */ |
| bcm_sf2_intr_disable(priv); |
| |
| ret = request_irq(priv->irq0, bcm_sf2_switch_0_isr, 0, |
| "switch_0", priv); |
| if (ret < 0) { |
| pr_err("failed to request switch_0 IRQ\n"); |
| goto out_unmap; |
| } |
| |
| ret = request_irq(priv->irq1, bcm_sf2_switch_1_isr, 0, |
| "switch_1", priv); |
| if (ret < 0) { |
| pr_err("failed to request switch_1 IRQ\n"); |
| goto out_free_irq0; |
| } |
| |
| /* Reset the MIB counters */ |
| reg = core_readl(priv, CORE_GMNCFGCFG); |
| reg |= RST_MIB_CNT; |
| core_writel(priv, reg, CORE_GMNCFGCFG); |
| reg &= ~RST_MIB_CNT; |
| core_writel(priv, reg, CORE_GMNCFGCFG); |
| |
| /* Get the maximum number of ports for this switch */ |
| priv->hw_params.num_ports = core_readl(priv, CORE_IMP0_PRT_ID) + 1; |
| if (priv->hw_params.num_ports > DSA_MAX_PORTS) |
| priv->hw_params.num_ports = DSA_MAX_PORTS; |
| |
| /* Assume a single GPHY setup if we can't read that property */ |
| if (of_property_read_u32(dn, "brcm,num-gphy", |
| &priv->hw_params.num_gphy)) |
| priv->hw_params.num_gphy = 1; |
| |
| /* Enable all valid ports and disable those unused */ |
| for (port = 0; port < priv->hw_params.num_ports; port++) { |
| /* IMP port receives special treatment */ |
| if ((1 << port) & ds->enabled_port_mask) |
| bcm_sf2_port_setup(ds, port, NULL); |
| else if (dsa_is_cpu_port(ds, port)) |
| bcm_sf2_imp_setup(ds, port); |
| else |
| bcm_sf2_port_disable(ds, port, NULL); |
| } |
| |
| /* Include the pseudo-PHY address and the broadcast PHY address to |
| * divert reads towards our workaround. This is only required for |
| * 7445D0, since 7445E0 disconnects the internal switch pseudo-PHY such |
| * that we can use the regular SWITCH_MDIO master controller instead. |
| * |
| * By default, DSA initializes ds->phys_mii_mask to |
| * ds->enabled_port_mask to have a 1:1 mapping between Port address |
| * and PHY address in order to utilize the slave_mii_bus instance to |
| * read from Port PHYs. This is not what we want here, so we |
| * initialize phys_mii_mask 0 to always utilize the "master" MDIO |
| * bus backed by the "mdio-unimac" driver. |
| */ |
| if (of_machine_is_compatible("brcm,bcm7445d0")) |
| ds->phys_mii_mask |= ((1 << BRCM_PSEUDO_PHY_ADDR) | (1 << 0)); |
| else |
| ds->phys_mii_mask = 0; |
| |
| rev = reg_readl(priv, REG_SWITCH_REVISION); |
| priv->hw_params.top_rev = (rev >> SWITCH_TOP_REV_SHIFT) & |
| SWITCH_TOP_REV_MASK; |
| priv->hw_params.core_rev = (rev & SF2_REV_MASK); |
| |
| rev = reg_readl(priv, REG_PHY_REVISION); |
| priv->hw_params.gphy_rev = rev & PHY_REVISION_MASK; |
| |
| pr_info("Starfighter 2 top: %x.%02x, core: %x.%02x base: 0x%p, IRQs: %d, %d\n", |
| priv->hw_params.top_rev >> 8, priv->hw_params.top_rev & 0xff, |
| priv->hw_params.core_rev >> 8, priv->hw_params.core_rev & 0xff, |
| priv->core, priv->irq0, priv->irq1); |
| |
| return 0; |
| |
| out_free_irq0: |
| free_irq(priv->irq0, priv); |
| out_unmap: |
| base = &priv->core; |
| for (i = 0; i < BCM_SF2_REGS_NUM; i++) { |
| if (*base) |
| iounmap(*base); |
| base++; |
| } |
| return ret; |
| } |
| |
| static int bcm_sf2_sw_set_addr(struct dsa_switch *ds, u8 *addr) |
| { |
| return 0; |
| } |
| |
| static u32 bcm_sf2_sw_get_phy_flags(struct dsa_switch *ds, int port) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| |
| /* The BCM7xxx PHY driver expects to find the integrated PHY revision |
| * in bits 15:8 and the patch level in bits 7:0 which is exactly what |
| * the REG_PHY_REVISION register layout is. |
| */ |
| |
| return priv->hw_params.gphy_rev; |
| } |
| |
| static int bcm_sf2_sw_indir_rw(struct dsa_switch *ds, int op, int addr, |
| int regnum, u16 val) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| int ret = 0; |
| u32 reg; |
| |
| reg = reg_readl(priv, REG_SWITCH_CNTRL); |
| reg |= MDIO_MASTER_SEL; |
| reg_writel(priv, reg, REG_SWITCH_CNTRL); |
| |
| /* Page << 8 | offset */ |
| reg = 0x70; |
| reg <<= 2; |
| core_writel(priv, addr, reg); |
| |
| /* Page << 8 | offset */ |
| reg = 0x80 << 8 | regnum << 1; |
| reg <<= 2; |
| |
| if (op) |
| ret = core_readl(priv, reg); |
| else |
| core_writel(priv, val, reg); |
| |
| reg = reg_readl(priv, REG_SWITCH_CNTRL); |
| reg &= ~MDIO_MASTER_SEL; |
| reg_writel(priv, reg, REG_SWITCH_CNTRL); |
| |
| return ret & 0xffff; |
| } |
| |
| static int bcm_sf2_sw_phy_read(struct dsa_switch *ds, int addr, int regnum) |
| { |
| /* Intercept reads from the MDIO broadcast address or Broadcom |
| * pseudo-PHY address |
| */ |
| switch (addr) { |
| case 0: |
| case BRCM_PSEUDO_PHY_ADDR: |
| return bcm_sf2_sw_indir_rw(ds, 1, addr, regnum, 0); |
| default: |
| return 0xffff; |
| } |
| } |
| |
| static int bcm_sf2_sw_phy_write(struct dsa_switch *ds, int addr, int regnum, |
| u16 val) |
| { |
| /* Intercept writes to the MDIO broadcast address or Broadcom |
| * pseudo-PHY address |
| */ |
| switch (addr) { |
| case 0: |
| case BRCM_PSEUDO_PHY_ADDR: |
| bcm_sf2_sw_indir_rw(ds, 0, addr, regnum, val); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static void bcm_sf2_sw_adjust_link(struct dsa_switch *ds, int port, |
| struct phy_device *phydev) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| u32 id_mode_dis = 0, port_mode; |
| const char *str = NULL; |
| u32 reg; |
| |
| switch (phydev->interface) { |
| case PHY_INTERFACE_MODE_RGMII: |
| str = "RGMII (no delay)"; |
| id_mode_dis = 1; |
| case PHY_INTERFACE_MODE_RGMII_TXID: |
| if (!str) |
| str = "RGMII (TX delay)"; |
| port_mode = EXT_GPHY; |
| break; |
| case PHY_INTERFACE_MODE_MII: |
| str = "MII"; |
| port_mode = EXT_EPHY; |
| break; |
| case PHY_INTERFACE_MODE_REVMII: |
| str = "Reverse MII"; |
| port_mode = EXT_REVMII; |
| break; |
| default: |
| /* All other PHYs: internal and MoCA */ |
| goto force_link; |
| } |
| |
| /* If the link is down, just disable the interface to conserve power */ |
| if (!phydev->link) { |
| reg = reg_readl(priv, REG_RGMII_CNTRL_P(port)); |
| reg &= ~RGMII_MODE_EN; |
| reg_writel(priv, reg, REG_RGMII_CNTRL_P(port)); |
| goto force_link; |
| } |
| |
| /* Clear id_mode_dis bit, and the existing port mode, but |
| * make sure we enable the RGMII block for data to pass |
| */ |
| reg = reg_readl(priv, REG_RGMII_CNTRL_P(port)); |
| reg &= ~ID_MODE_DIS; |
| reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT); |
| reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN); |
| |
| reg |= port_mode | RGMII_MODE_EN; |
| if (id_mode_dis) |
| reg |= ID_MODE_DIS; |
| |
| if (phydev->pause) { |
| if (phydev->asym_pause) |
| reg |= TX_PAUSE_EN; |
| reg |= RX_PAUSE_EN; |
| } |
| |
| reg_writel(priv, reg, REG_RGMII_CNTRL_P(port)); |
| |
| pr_info("Port %d configured for %s\n", port, str); |
| |
| force_link: |
| /* Force link settings detected from the PHY */ |
| reg = SW_OVERRIDE; |
| switch (phydev->speed) { |
| case SPEED_1000: |
| reg |= SPDSTS_1000 << SPEED_SHIFT; |
| break; |
| case SPEED_100: |
| reg |= SPDSTS_100 << SPEED_SHIFT; |
| break; |
| } |
| |
| if (phydev->link) |
| reg |= LINK_STS; |
| if (phydev->duplex == DUPLEX_FULL) |
| reg |= DUPLX_MODE; |
| |
| core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port)); |
| } |
| |
| static void bcm_sf2_sw_fixed_link_update(struct dsa_switch *ds, int port, |
| struct fixed_phy_status *status) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| u32 duplex, pause; |
| u32 reg; |
| |
| duplex = core_readl(priv, CORE_DUPSTS); |
| pause = core_readl(priv, CORE_PAUSESTS); |
| |
| status->link = 0; |
| |
| /* MoCA port is special as we do not get link status from CORE_LNKSTS, |
| * which means that we need to force the link at the port override |
| * level to get the data to flow. We do use what the interrupt handler |
| * did determine before. |
| * |
| * For the other ports, we just force the link status, since this is |
| * a fixed PHY device. |
| */ |
| if (port == priv->moca_port) { |
| status->link = priv->port_sts[port].link; |
| /* For MoCA interfaces, also force a link down notification |
| * since some version of the user-space daemon (mocad) use |
| * cmd->autoneg to force the link, which messes up the PHY |
| * state machine and make it go in PHY_FORCING state instead. |
| */ |
| if (!status->link) |
| netif_carrier_off(ds->ports[port]); |
| status->duplex = 1; |
| } else { |
| status->link = 1; |
| status->duplex = !!(duplex & (1 << port)); |
| } |
| |
| reg = core_readl(priv, CORE_STS_OVERRIDE_GMIIP_PORT(port)); |
| reg |= SW_OVERRIDE; |
| if (status->link) |
| reg |= LINK_STS; |
| else |
| reg &= ~LINK_STS; |
| core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(port)); |
| |
| if ((pause & (1 << port)) && |
| (pause & (1 << (port + PAUSESTS_TX_PAUSE_SHIFT)))) { |
| status->asym_pause = 1; |
| status->pause = 1; |
| } |
| |
| if (pause & (1 << port)) |
| status->pause = 1; |
| } |
| |
| static int bcm_sf2_sw_suspend(struct dsa_switch *ds) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| unsigned int port; |
| |
| bcm_sf2_intr_disable(priv); |
| |
| /* Disable all ports physically present including the IMP |
| * port, the other ones have already been disabled during |
| * bcm_sf2_sw_setup |
| */ |
| for (port = 0; port < DSA_MAX_PORTS; port++) { |
| if ((1 << port) & ds->enabled_port_mask || |
| dsa_is_cpu_port(ds, port)) |
| bcm_sf2_port_disable(ds, port, NULL); |
| } |
| |
| return 0; |
| } |
| |
| static int bcm_sf2_sw_resume(struct dsa_switch *ds) |
| { |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| unsigned int port; |
| int ret; |
| |
| ret = bcm_sf2_sw_rst(priv); |
| if (ret) { |
| pr_err("%s: failed to software reset switch\n", __func__); |
| return ret; |
| } |
| |
| if (priv->hw_params.num_gphy == 1) |
| bcm_sf2_gphy_enable_set(ds, true); |
| |
| for (port = 0; port < DSA_MAX_PORTS; port++) { |
| if ((1 << port) & ds->enabled_port_mask) |
| bcm_sf2_port_setup(ds, port, NULL); |
| else if (dsa_is_cpu_port(ds, port)) |
| bcm_sf2_imp_setup(ds, port); |
| } |
| |
| return 0; |
| } |
| |
| static void bcm_sf2_sw_get_wol(struct dsa_switch *ds, int port, |
| struct ethtool_wolinfo *wol) |
| { |
| struct net_device *p = ds->dst[ds->index].master_netdev; |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| struct ethtool_wolinfo pwol; |
| |
| /* Get the parent device WoL settings */ |
| p->ethtool_ops->get_wol(p, &pwol); |
| |
| /* Advertise the parent device supported settings */ |
| wol->supported = pwol.supported; |
| memset(&wol->sopass, 0, sizeof(wol->sopass)); |
| |
| if (pwol.wolopts & WAKE_MAGICSECURE) |
| memcpy(&wol->sopass, pwol.sopass, sizeof(wol->sopass)); |
| |
| if (priv->wol_ports_mask & (1 << port)) |
| wol->wolopts = pwol.wolopts; |
| else |
| wol->wolopts = 0; |
| } |
| |
| static int bcm_sf2_sw_set_wol(struct dsa_switch *ds, int port, |
| struct ethtool_wolinfo *wol) |
| { |
| struct net_device *p = ds->dst[ds->index].master_netdev; |
| struct bcm_sf2_priv *priv = ds_to_priv(ds); |
| s8 cpu_port = ds->dst[ds->index].cpu_port; |
| struct ethtool_wolinfo pwol; |
| |
| p->ethtool_ops->get_wol(p, &pwol); |
| if (wol->wolopts & ~pwol.supported) |
| return -EINVAL; |
| |
| if (wol->wolopts) |
| priv->wol_ports_mask |= (1 << port); |
| else |
| priv->wol_ports_mask &= ~(1 << port); |
| |
| /* If we have at least one port enabled, make sure the CPU port |
| * is also enabled. If the CPU port is the last one enabled, we disable |
| * it since this configuration does not make sense. |
| */ |
| if (priv->wol_ports_mask && priv->wol_ports_mask != (1 << cpu_port)) |
| priv->wol_ports_mask |= (1 << cpu_port); |
| else |
| priv->wol_ports_mask &= ~(1 << cpu_port); |
| |
| return p->ethtool_ops->set_wol(p, wol); |
| } |
| |
| static struct dsa_switch_driver bcm_sf2_switch_driver = { |
| .tag_protocol = DSA_TAG_PROTO_BRCM, |
| .probe = bcm_sf2_sw_drv_probe, |
| .setup = bcm_sf2_sw_setup, |
| .set_addr = bcm_sf2_sw_set_addr, |
| .get_phy_flags = bcm_sf2_sw_get_phy_flags, |
| .phy_read = bcm_sf2_sw_phy_read, |
| .phy_write = bcm_sf2_sw_phy_write, |
| .get_strings = bcm_sf2_sw_get_strings, |
| .get_ethtool_stats = bcm_sf2_sw_get_ethtool_stats, |
| .get_sset_count = bcm_sf2_sw_get_sset_count, |
| .adjust_link = bcm_sf2_sw_adjust_link, |
| .fixed_link_update = bcm_sf2_sw_fixed_link_update, |
| .suspend = bcm_sf2_sw_suspend, |
| .resume = bcm_sf2_sw_resume, |
| .get_wol = bcm_sf2_sw_get_wol, |
| .set_wol = bcm_sf2_sw_set_wol, |
| .port_enable = bcm_sf2_port_setup, |
| .port_disable = bcm_sf2_port_disable, |
| .get_eee = bcm_sf2_sw_get_eee, |
| .set_eee = bcm_sf2_sw_set_eee, |
| .port_bridge_join = bcm_sf2_sw_br_join, |
| .port_bridge_leave = bcm_sf2_sw_br_leave, |
| .port_stp_state_set = bcm_sf2_sw_br_set_stp_state, |
| .port_fdb_prepare = bcm_sf2_sw_fdb_prepare, |
| .port_fdb_add = bcm_sf2_sw_fdb_add, |
| .port_fdb_del = bcm_sf2_sw_fdb_del, |
| .port_fdb_dump = bcm_sf2_sw_fdb_dump, |
| }; |
| |
| static int __init bcm_sf2_init(void) |
| { |
| register_switch_driver(&bcm_sf2_switch_driver); |
| |
| return 0; |
| } |
| module_init(bcm_sf2_init); |
| |
| static void __exit bcm_sf2_exit(void) |
| { |
| unregister_switch_driver(&bcm_sf2_switch_driver); |
| } |
| module_exit(bcm_sf2_exit); |
| |
| MODULE_AUTHOR("Broadcom Corporation"); |
| MODULE_DESCRIPTION("Driver for Broadcom Starfighter 2 ethernet switch chip"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:brcm-sf2"); |