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Date: Wed, 27 Aug 2014 17:04:56 -0700
From: Florian Fainelli <f.fainelli@...il.com>
To: netdev@...r.kernel.org
Cc: Florian Fainelli <f.fainelli@...il.com>, davem@...emloft.net,
linville@...driver.com, jhs@...atatu.com, alexander.duyck@...il.com
Subject: [PATCH net-next v5 11/13] net: dsa: add Broadcom SF2 switch driver
Add support for the Broadcom Starfigther 2 switch chip using a DSA
driver. This switch driver supports the following features:
- configuration of the external switch port interface: MII, RevMII,
RGMII and RGMII_NO_ID are supported
- support for the per-port MIB counters
- support for link interrupts for special ports (e.g: MoCA)
- powering up/down of switch memories to conserve power when ports are
unused
Finally, update the compatible property for the DSA core code to match
our switch top-level compatible node.
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
Changes in v4:
- fixed typo on the word Starfighter
- fixed a few checkpatch.pl warnings
No changes in v3
Changes in v2:
- add support for reading to special MDIO phys (0 and 30)
- added more power down optimization
- added VLAN separation
drivers/net/dsa/Kconfig | 11 +
drivers/net/dsa/Makefile | 1 +
drivers/net/dsa/bcm_sf2.c | 626 +++++++++++++++++++++++++++++++++++++++++
drivers/net/dsa/bcm_sf2.h | 140 +++++++++
drivers/net/dsa/bcm_sf2_regs.h | 227 +++++++++++++++
net/dsa/dsa.c | 1 +
6 files changed, 1006 insertions(+)
create mode 100644 drivers/net/dsa/bcm_sf2.c
create mode 100644 drivers/net/dsa/bcm_sf2.h
create mode 100644 drivers/net/dsa/bcm_sf2_regs.h
diff --git a/drivers/net/dsa/Kconfig b/drivers/net/dsa/Kconfig
index b8fe808b7957..c6ee07c6a1b5 100644
--- a/drivers/net/dsa/Kconfig
+++ b/drivers/net/dsa/Kconfig
@@ -36,4 +36,15 @@ config NET_DSA_MV88E6123_61_65
This enables support for the Marvell 88E6123/6161/6165
ethernet switch chips.
+config NET_DSA_BCM_SF2
+ tristate "Broadcom Starfighter 2 Ethernet switch support"
+ select NET_DSA
+ select NET_DSA_TAG_BRCM
+ select FIXED_PHY if NET_DSA_BCM_SF2=y
+ select BCM7XXX_PHY
+ select MDIO_BCM_UNIMAC
+ ---help---
+ This enables support for the Broadcom Starfighter 2 Ethernet
+ switch chips.
+
endmenu
diff --git a/drivers/net/dsa/Makefile b/drivers/net/dsa/Makefile
index f3bda05536cc..dd3cd3b8157f 100644
--- a/drivers/net/dsa/Makefile
+++ b/drivers/net/dsa/Makefile
@@ -7,3 +7,4 @@ endif
ifdef CONFIG_NET_DSA_MV88E6131
mv88e6xxx_drv-y += mv88e6131.o
endif
+obj-$(CONFIG_NET_DSA_BCM_SF2) += bcm_sf2.o
diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
new file mode 100644
index 000000000000..bb7cb8e283b1
--- /dev/null
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -0,0 +1,626 @@
+/*
+ * 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 <net/dsa.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 char *bcm_sf2_sw_probe(struct mii_bus *bus, int sw_addr)
+{
+ return "Broadcom Starfighter 2";
+}
+
+static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
+{
+ struct bcm_sf2_priv *priv = ds_to_priv(ds);
+ unsigned int i;
+ 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);
+
+ /* 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->phys_port_mask))
+ continue;
+
+ reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(i));
+ reg |= (1 << port);
+ core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(i));
+ }
+}
+
+static void bcm_sf2_port_setup(struct dsa_switch *ds, int port)
+{
+ struct bcm_sf2_priv *priv = ds_to_priv(ds);
+ 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));
+
+ /* Enable port 7 interrupts to get notified */
+ if (port == 7)
+ intrl2_1_mask_clear(priv, P_IRQ_MASK(P7_IRQ_OFF));
+
+ /* Set this port, and only this one to be in the default VLAN */
+ reg = core_readl(priv, CORE_PORT_VLAN_CTL_PORT(port));
+ reg &= ~PORT_VLAN_CTRL_MASK;
+ reg |= (1 << port);
+ core_writel(priv, reg, CORE_PORT_VLAN_CTL_PORT(port));
+}
+
+static void bcm_sf2_port_disable(struct dsa_switch *ds, int port)
+{
+ struct bcm_sf2_priv *priv = ds_to_priv(ds);
+ u32 off, reg;
+
+ 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);
+}
+
+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_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->pd->of_node->parent;
+
+ 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]);
+ return -ENODEV;
+ }
+ base++;
+ }
+
+ /* Disable all interrupts and request them */
+ 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);
+
+ 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->phys_port_mask)
+ bcm_sf2_port_setup(ds, port);
+ else if (dsa_is_cpu_port(ds, port))
+ bcm_sf2_imp_setup(ds, port);
+ else
+ bcm_sf2_port_disable(ds, port);
+ }
+
+ /* Include the pseudo-PHY address and the broadcast PHY address to
+ * divert reads towards our workaround
+ */
+ ds->phys_mii_mask |= ((1 << 30) | (1 << 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);
+
+ 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++) {
+ iounmap(*base);
+ base++;
+ }
+ return ret;
+}
+
+static int bcm_sf2_sw_set_addr(struct dsa_switch *ds, u8 *addr)
+{
+ return 0;
+}
+
+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 30:
+ 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 30:
+ 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:
+ 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 link, duplex, pause, speed;
+ u32 reg;
+
+ link = core_readl(priv, CORE_LNKSTS);
+ duplex = core_readl(priv, CORE_DUPSTS);
+ pause = core_readl(priv, CORE_PAUSESTS);
+ speed = core_readl(priv, CORE_SPDSTS);
+
+ speed >>= (port * SPDSTS_SHIFT);
+ speed &= SPDSTS_MASK;
+
+ status->link = 0;
+
+ /* Port 7 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.
+ */
+ if (port == 7) {
+ status->link = priv->port_sts[port].link;
+ reg = core_readl(priv, CORE_STS_OVERRIDE_GMIIP_PORT(7));
+ reg |= SW_OVERRIDE;
+ if (status->link)
+ reg |= LINK_STS;
+ else
+ reg &= ~LINK_STS;
+ core_writel(priv, reg, CORE_STS_OVERRIDE_GMIIP_PORT(7));
+ status->duplex = 1;
+ } else {
+ status->link = !!(link & (1 << port));
+ status->duplex = !!(duplex & (1 << port));
+ }
+
+ switch (speed) {
+ case SPDSTS_10:
+ status->speed = SPEED_10;
+ break;
+ case SPDSTS_100:
+ status->speed = SPEED_100;
+ break;
+ case SPDSTS_1000:
+ status->speed = SPEED_1000;
+ break;
+ }
+
+ 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 struct dsa_switch_driver bcm_sf2_switch_driver = {
+ .tag_protocol = htons(ETH_P_BRCMTAG),
+ .priv_size = sizeof(struct bcm_sf2_priv),
+ .probe = bcm_sf2_sw_probe,
+ .setup = bcm_sf2_sw_setup,
+ .set_addr = bcm_sf2_sw_set_addr,
+ .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,
+};
+
+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");
diff --git a/drivers/net/dsa/bcm_sf2.h b/drivers/net/dsa/bcm_sf2.h
new file mode 100644
index 000000000000..260bab313e58
--- /dev/null
+++ b/drivers/net/dsa/bcm_sf2.h
@@ -0,0 +1,140 @@
+/*
+ * Broadcom Starfighter2 private context
+ *
+ * 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.
+ */
+
+#ifndef __BCM_SF2_H
+#define __BCM_SF2_H
+
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/mii.h>
+
+#include <net/dsa.h>
+
+#include "bcm_sf2_regs.h"
+
+struct bcm_sf2_hw_params {
+ u16 top_rev;
+ u16 core_rev;
+ u32 num_gphy;
+ u8 num_acb_queue;
+ u8 num_rgmii;
+ u8 num_ports;
+ u8 fcb_pause_override:1;
+ u8 acb_packets_inflight:1;
+};
+
+#define BCM_SF2_REGS_NAME {\
+ "core", "reg", "intrl2_0", "intrl2_1", "fcb", "acb" \
+}
+
+#define BCM_SF2_REGS_NUM 6
+
+struct bcm_sf2_port_status {
+ unsigned int link;
+};
+
+struct bcm_sf2_priv {
+ /* Base registers, keep those in order with BCM_SF2_REGS_NAME */
+ void __iomem *core;
+ void __iomem *reg;
+ void __iomem *intrl2_0;
+ void __iomem *intrl2_1;
+ void __iomem *fcb;
+ void __iomem *acb;
+
+ /* spinlock protecting access to the indirect registers */
+ spinlock_t indir_lock;
+
+ int irq0;
+ int irq1;
+ u32 irq0_stat;
+ u32 irq0_mask;
+ u32 irq1_stat;
+ u32 irq1_mask;
+
+ /* Mutex protecting access to the MIB counters */
+ struct mutex stats_mutex;
+
+ struct bcm_sf2_hw_params hw_params;
+
+ struct bcm_sf2_port_status port_sts[DSA_MAX_PORTS];
+};
+
+struct bcm_sf2_hw_stats {
+ const char *string;
+ u16 reg;
+ u8 sizeof_stat;
+};
+
+#define SF2_IO_MACRO(name) \
+static inline u32 name##_readl(struct bcm_sf2_priv *priv, u32 off) \
+{ \
+ return __raw_readl(priv->name + off); \
+} \
+static inline void name##_writel(struct bcm_sf2_priv *priv, \
+ u32 val, u32 off) \
+{ \
+ __raw_writel(val, priv->name + off); \
+} \
+
+/* Accesses to 64-bits register requires us to latch the hi/lo pairs
+ * using the REG_DIR_DATA_{READ,WRITE} ancillary registers. The 'indir_lock'
+ * spinlock is automatically grabbed and released to provide relative
+ * atomiticy with latched reads/writes.
+ */
+#define SF2_IO64_MACRO(name) \
+static inline u64 name##_readq(struct bcm_sf2_priv *priv, u32 off) \
+{ \
+ u32 indir, dir; \
+ spin_lock(&priv->indir_lock); \
+ indir = reg_readl(priv, REG_DIR_DATA_READ); \
+ dir = __raw_readl(priv->name + off); \
+ spin_unlock(&priv->indir_lock); \
+ return (u64)indir << 32 | dir; \
+} \
+static inline void name##_writeq(struct bcm_sf2_priv *priv, u32 off, \
+ u64 val) \
+{ \
+ spin_lock(&priv->indir_lock); \
+ reg_writel(priv, upper_32_bits(val), REG_DIR_DATA_WRITE); \
+ __raw_writel(lower_32_bits(val), priv->name + off); \
+ spin_unlock(&priv->indir_lock); \
+}
+
+#define SWITCH_INTR_L2(which) \
+static inline void intrl2_##which##_mask_clear(struct bcm_sf2_priv *priv, \
+ u32 mask) \
+{ \
+ intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR); \
+ priv->irq##which##_mask &= ~(mask); \
+} \
+static inline void intrl2_##which##_mask_set(struct bcm_sf2_priv *priv, \
+ u32 mask) \
+{ \
+ intrl2_## which##_writel(priv, mask, INTRL2_CPU_MASK_SET); \
+ priv->irq##which##_mask |= (mask); \
+} \
+
+SF2_IO_MACRO(core);
+SF2_IO_MACRO(reg);
+SF2_IO64_MACRO(core);
+SF2_IO_MACRO(intrl2_0);
+SF2_IO_MACRO(intrl2_1);
+SF2_IO_MACRO(fcb);
+SF2_IO_MACRO(acb);
+
+SWITCH_INTR_L2(0);
+SWITCH_INTR_L2(1);
+
+#endif /* __BCM_SF2_H */
diff --git a/drivers/net/dsa/bcm_sf2_regs.h b/drivers/net/dsa/bcm_sf2_regs.h
new file mode 100644
index 000000000000..885c231b03b5
--- /dev/null
+++ b/drivers/net/dsa/bcm_sf2_regs.h
@@ -0,0 +1,227 @@
+/*
+ * Broadcom Starfighter 2 switch register defines
+ *
+ * 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.
+ */
+#ifndef __BCM_SF2_REGS_H
+#define __BCM_SF2_REGS_H
+
+/* Register set relative to 'REG' */
+#define REG_SWITCH_CNTRL 0x00
+#define MDIO_MASTER_SEL (1 << 0)
+
+#define REG_SWITCH_STATUS 0x04
+#define REG_DIR_DATA_WRITE 0x08
+#define REG_DIR_DATA_READ 0x0C
+
+#define REG_SWITCH_REVISION 0x18
+#define SF2_REV_MASK 0xffff
+#define SWITCH_TOP_REV_SHIFT 16
+#define SWITCH_TOP_REV_MASK 0xffff
+
+#define REG_PHY_REVISION 0x1C
+
+#define REG_SPHY_CNTRL 0x2C
+#define IDDQ_BIAS (1 << 0)
+#define EXT_PWR_DOWN (1 << 1)
+#define FORCE_DLL_EN (1 << 2)
+#define IDDQ_GLOBAL_PWR (1 << 3)
+#define CK25_DIS (1 << 4)
+#define PHY_RESET (1 << 5)
+#define PHY_PHYAD_SHIFT 8
+#define PHY_PHYAD_MASK 0x1F
+
+#define REG_RGMII_0_BASE 0x34
+#define REG_RGMII_CNTRL 0x00
+#define REG_RGMII_IB_STATUS 0x04
+#define REG_RGMII_RX_CLOCK_DELAY_CNTRL 0x08
+#define REG_RGMII_CNTRL_SIZE 0x0C
+#define REG_RGMII_CNTRL_P(x) (REG_RGMII_0_BASE + \
+ ((x) * REG_RGMII_CNTRL_SIZE))
+/* Relative to REG_RGMII_CNTRL */
+#define RGMII_MODE_EN (1 << 0)
+#define ID_MODE_DIS (1 << 1)
+#define PORT_MODE_SHIFT 2
+#define INT_EPHY (0 << PORT_MODE_SHIFT)
+#define INT_GPHY (1 << PORT_MODE_SHIFT)
+#define EXT_EPHY (2 << PORT_MODE_SHIFT)
+#define EXT_GPHY (3 << PORT_MODE_SHIFT)
+#define EXT_REVMII (4 << PORT_MODE_SHIFT)
+#define PORT_MODE_MASK 0x7
+#define RVMII_REF_SEL (1 << 5)
+#define RX_PAUSE_EN (1 << 6)
+#define TX_PAUSE_EN (1 << 7)
+#define TX_CLK_STOP_EN (1 << 8)
+#define LPI_COUNT_SHIFT 9
+#define LPI_COUNT_MASK 0x3F
+
+/* Register set relative to 'INTRL2_0' and 'INTRL2_1' */
+#define INTRL2_CPU_STATUS 0x00
+#define INTRL2_CPU_SET 0x04
+#define INTRL2_CPU_CLEAR 0x08
+#define INTRL2_CPU_MASK_STATUS 0x0c
+#define INTRL2_CPU_MASK_SET 0x10
+#define INTRL2_CPU_MASK_CLEAR 0x14
+
+/* Shared INTRL2_0 and INTRL2_ interrupt sources macros */
+#define P_LINK_UP_IRQ(x) (1 << (0 + (x)))
+#define P_LINK_DOWN_IRQ(x) (1 << (1 + (x)))
+#define P_ENERGY_ON_IRQ(x) (1 << (2 + (x)))
+#define P_ENERGY_OFF_IRQ(x) (1 << (3 + (x)))
+#define P_GPHY_IRQ(x) (1 << (4 + (x)))
+#define P_NUM_IRQ 5
+#define P_IRQ_MASK(x) (P_LINK_UP_IRQ((x)) | \
+ P_LINK_DOWN_IRQ((x)) | \
+ P_ENERGY_ON_IRQ((x)) | \
+ P_ENERGY_OFF_IRQ((x)) | \
+ P_GPHY_IRQ((x)))
+
+/* INTRL2_0 interrupt sources */
+#define P0_IRQ_OFF 0
+#define MEM_DOUBLE_IRQ (1 << 5)
+#define EEE_LPI_IRQ (1 << 6)
+#define P5_CPU_WAKE_IRQ (1 << 7)
+#define P8_CPU_WAKE_IRQ (1 << 8)
+#define P7_CPU_WAKE_IRQ (1 << 9)
+#define IEEE1588_IRQ (1 << 10)
+#define MDIO_ERR_IRQ (1 << 11)
+#define MDIO_DONE_IRQ (1 << 12)
+#define GISB_ERR_IRQ (1 << 13)
+#define UBUS_ERR_IRQ (1 << 14)
+#define FAILOVER_ON_IRQ (1 << 15)
+#define FAILOVER_OFF_IRQ (1 << 16)
+#define TCAM_SOFT_ERR_IRQ (1 << 17)
+
+/* INTRL2_1 interrupt sources */
+#define P7_IRQ_OFF 0
+#define P_IRQ_OFF(x) ((6 - (x)) * P_NUM_IRQ)
+
+/* Register set relative to 'CORE' */
+#define CORE_G_PCTL_PORT0 0x00000
+#define CORE_G_PCTL_PORT(x) (CORE_G_PCTL_PORT0 + (x * 0x4))
+#define CORE_IMP_CTL 0x00020
+#define RX_DIS (1 << 0)
+#define TX_DIS (1 << 1)
+#define RX_BCST_EN (1 << 2)
+#define RX_MCST_EN (1 << 3)
+#define RX_UCST_EN (1 << 4)
+#define G_MISTP_STATE_SHIFT 5
+#define G_MISTP_NO_STP (0 << G_MISTP_STATE_SHIFT)
+#define G_MISTP_DIS_STATE (1 << G_MISTP_STATE_SHIFT)
+#define G_MISTP_BLOCK_STATE (2 << G_MISTP_STATE_SHIFT)
+#define G_MISTP_LISTEN_STATE (3 << G_MISTP_STATE_SHIFT)
+#define G_MISTP_LEARN_STATE (4 << G_MISTP_STATE_SHIFT)
+#define G_MISTP_FWD_STATE (5 << G_MISTP_STATE_SHIFT)
+#define G_MISTP_STATE_MASK 0x7
+
+#define CORE_SWMODE 0x0002c
+#define SW_FWDG_MODE (1 << 0)
+#define SW_FWDG_EN (1 << 1)
+#define RTRY_LMT_DIS (1 << 2)
+
+#define CORE_STS_OVERRIDE_IMP 0x00038
+#define GMII_SPEED_UP_2G (1 << 6)
+#define MII_SW_OR (1 << 7)
+
+#define CORE_NEW_CTRL 0x00084
+#define IP_MC (1 << 0)
+#define OUTRANGEERR_DISCARD (1 << 1)
+#define INRANGEERR_DISCARD (1 << 2)
+#define CABLE_DIAG_LEN (1 << 3)
+#define OVERRIDE_AUTO_PD_WAR (1 << 4)
+#define EN_AUTO_PD_WAR (1 << 5)
+#define UC_FWD_EN (1 << 6)
+#define MC_FWD_EN (1 << 7)
+
+#define CORE_SWITCH_CTRL 0x00088
+#define MII_DUMB_FWDG_EN (1 << 6)
+
+#define CORE_SFT_LRN_CTRL 0x000f8
+#define SW_LEARN_CNTL(x) (1 << (x))
+
+#define CORE_STS_OVERRIDE_GMIIP_PORT(x) (0x160 + (x) * 4)
+#define LINK_STS (1 << 0)
+#define DUPLX_MODE (1 << 1)
+#define SPEED_SHIFT 2
+#define SPEED_MASK 0x3
+#define RXFLOW_CNTL (1 << 4)
+#define TXFLOW_CNTL (1 << 5)
+#define SW_OVERRIDE (1 << 6)
+
+#define CORE_WATCHDOG_CTRL 0x001e4
+#define SOFTWARE_RESET (1 << 7)
+#define EN_CHIP_RST (1 << 6)
+#define EN_SW_RESET (1 << 4)
+
+#define CORE_LNKSTS 0x00400
+#define LNK_STS_MASK 0x1ff
+
+#define CORE_SPDSTS 0x00410
+#define SPDSTS_10 0
+#define SPDSTS_100 1
+#define SPDSTS_1000 2
+#define SPDSTS_SHIFT 2
+#define SPDSTS_MASK 0x3
+
+#define CORE_DUPSTS 0x00420
+#define CORE_DUPSTS_MASK 0x1ff
+
+#define CORE_PAUSESTS 0x00428
+#define PAUSESTS_TX_PAUSE_SHIFT 9
+
+#define CORE_GMNCFGCFG 0x0800
+#define RST_MIB_CNT (1 << 0)
+#define RXBPDU_EN (1 << 1)
+
+#define CORE_IMP0_PRT_ID 0x0804
+
+#define CORE_BRCM_HDR_CTRL 0x0080c
+#define BRCM_HDR_EN_P8 (1 << 0)
+#define BRCM_HDR_EN_P5 (1 << 1)
+#define BRCM_HDR_EN_P7 (1 << 2)
+
+#define CORE_BRCM_HDR_CTRL2 0x0828
+
+#define CORE_HL_PRTC_CTRL 0x0940
+#define ARP_EN (1 << 0)
+#define RARP_EN (1 << 1)
+#define DHCP_EN (1 << 2)
+#define ICMPV4_EN (1 << 3)
+#define ICMPV6_EN (1 << 4)
+#define ICMPV6_FWD_MODE (1 << 5)
+#define IGMP_DIP_EN (1 << 8)
+#define IGMP_RPTLVE_EN (1 << 9)
+#define IGMP_RTPLVE_FWD_MODE (1 << 10)
+#define IGMP_QRY_EN (1 << 11)
+#define IGMP_QRY_FWD_MODE (1 << 12)
+#define IGMP_UKN_EN (1 << 13)
+#define IGMP_UKN_FWD_MODE (1 << 14)
+#define MLD_RPTDONE_EN (1 << 15)
+#define MLD_RPTDONE_FWD_MODE (1 << 16)
+#define MLD_QRY_EN (1 << 17)
+#define MLD_QRY_FWD_MODE (1 << 18)
+
+#define CORE_RST_MIB_CNT_EN 0x0950
+
+#define CORE_BRCM_HDR_RX_DIS 0x0980
+#define CORE_BRCM_HDR_TX_DIS 0x0988
+
+#define CORE_MEM_PSM_VDD_CTRL 0x2380
+#define P_TXQ_PSM_VDD_SHIFT 2
+#define P_TXQ_PSM_VDD_MASK 0x3
+#define P_TXQ_PSM_VDD(x) (P_TXQ_PSM_VDD_MASK << \
+ ((x) * P_TXQ_PSM_VDD_SHIFT))
+
+#define CORE_P0_MIB_OFFSET 0x8000
+#define P_MIB_SIZE 0x400
+#define CORE_P_MIB_OFFSET(x) (CORE_P0_MIB_OFFSET + (x) * P_MIB_SIZE)
+
+#define CORE_PORT_VLAN_CTL_PORT(x) (0xc400 + ((x) * 0x8))
+#define PORT_VLAN_CTRL_MASK 0x1ff
+
+#endif /* __BCM_SF2_REGS_H */
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 4dc2a16b72cf..484f695351a7 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -635,6 +635,7 @@ struct packet_type dsa_pack_type __read_mostly = {
};
static const struct of_device_id dsa_of_match_table[] = {
+ { .compatible = "brcm,bcm7445-switch-v4.0" },
{ .compatible = "marvell,dsa", },
{}
};
--
1.9.1
--
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