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Message-ID: <f8746676ac4332a4481e79e904b725dc21cb225e.1761402873.git.daniel@makrotopia.org>
Date: Sat, 25 Oct 2025 15:47:52 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Hauke Mehrtens <hauke@...ke-m.de>, Andrew Lunn <andrew@...n.ch>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Simon Horman <horms@...nel.org>,
Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Andreas Schirm <andreas.schirm@...mens.com>,
Lukas Stockmann <lukas.stockmann@...mens.com>,
Alexander Sverdlin <alexander.sverdlin@...mens.com>,
Peter Christen <peter.christen@...mens.com>,
Avinash Jayaraman <ajayaraman@...linear.com>,
Bing tao Xu <bxu@...linear.com>, Liang Xu <lxu@...linear.com>,
Juraj Povazanec <jpovazanec@...linear.com>,
"Fanni (Fang-Yi) Chan" <fchan@...linear.com>,
"Benny (Ying-Tsan) Weng" <yweng@...linear.com>,
"Livia M. Rosu" <lrosu@...linear.com>,
John Crispin <john@...ozen.org>
Subject: [PATCH net-next v2 01/13] net: dsa: lantiq_gswip: split into common
and MMIO parts
Move all parts specific for the MMIO/SoC driver into a module of its own
to prepare for supporting MDIO-connected switch ICs.
Modify gswip_probe() functions by splitting it into a common function
gswip_probe_common() which covers allocating, initializing and registering
the DSA switch, while keeping transport-specific regmap initialization as
well as PHY firmware loading in the new MMIO/SoC-specific gswip_probe()
function.
Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
drivers/net/dsa/lantiq/Kconfig | 6 +-
drivers/net/dsa/lantiq/Makefile | 1 +
drivers/net/dsa/lantiq/lantiq_gswip.c | 1617 +----------------
drivers/net/dsa/lantiq/lantiq_gswip.h | 4 +
drivers/net/dsa/lantiq/lantiq_gswip_common.c | 1622 ++++++++++++++++++
5 files changed, 1658 insertions(+), 1592 deletions(-)
create mode 100644 drivers/net/dsa/lantiq/lantiq_gswip_common.c
diff --git a/drivers/net/dsa/lantiq/Kconfig b/drivers/net/dsa/lantiq/Kconfig
index 3cfa16840cf5..78db82a47d09 100644
--- a/drivers/net/dsa/lantiq/Kconfig
+++ b/drivers/net/dsa/lantiq/Kconfig
@@ -1,8 +1,12 @@
+config NET_DSA_LANTIQ_COMMON
+ tristate
+ select REGMAP
+
config NET_DSA_LANTIQ_GSWIP
tristate "Lantiq / Intel GSWIP"
depends on HAS_IOMEM
select NET_DSA_TAG_GSWIP
- select REGMAP
+ select NET_DSA_LANTIQ_COMMON
help
This enables support for the Lantiq / Intel GSWIP 2.1 found in
the xrx200 / VR9 SoC.
diff --git a/drivers/net/dsa/lantiq/Makefile b/drivers/net/dsa/lantiq/Makefile
index 849f85ebebd6..65ffa7bb71aa 100644
--- a/drivers/net/dsa/lantiq/Makefile
+++ b/drivers/net/dsa/lantiq/Makefile
@@ -1 +1,2 @@
obj-$(CONFIG_NET_DSA_LANTIQ_GSWIP) += lantiq_gswip.o
+obj-$(CONFIG_NET_DSA_LANTIQ_COMMON) += lantiq_gswip_common.o
diff --git a/drivers/net/dsa/lantiq/lantiq_gswip.c b/drivers/net/dsa/lantiq/lantiq_gswip.c
index 38f7f6352e8d..57dd063c0740 100644
--- a/drivers/net/dsa/lantiq/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq/lantiq_gswip.c
@@ -2,1226 +2,32 @@
/*
* Lantiq / Intel GSWIP switch driver for VRX200, xRX300 and xRX330 SoCs
*
- * Copyright (C) 2010 Lantiq Deutschland
- * Copyright (C) 2012 John Crispin <john@...ozen.org>
- * Copyright (C) 2017 - 2019 Hauke Mehrtens <hauke@...ke-m.de>
- *
- * The VLAN and bridge model the GSWIP hardware uses does not directly
- * matches the model DSA uses.
- *
- * The hardware has 64 possible table entries for bridges with one VLAN
- * ID, one flow id and a list of ports for each bridge. All entries which
- * match the same flow ID are combined in the mac learning table, they
- * act as one global bridge.
- * The hardware does not support VLAN filter on the port, but on the
- * bridge, this driver converts the DSA model to the hardware.
- *
- * The CPU gets all the exception frames which do not match any forwarding
- * rule and the CPU port is also added to all bridges. This makes it possible
- * to handle all the special cases easily in software.
- * At the initialization the driver allocates one bridge table entry for
- * each switch port which is used when the port is used without an
- * explicit bridge. This prevents the frames from being forwarded
- * between all LAN ports by default.
- */
-
-#include "lantiq_gswip.h"
-#include "lantiq_pce.h"
-
-#include <linux/delay.h>
-#include <linux/etherdevice.h>
-#include <linux/firmware.h>
-#include <linux/if_bridge.h>
-#include <linux/if_vlan.h>
-#include <linux/iopoll.h>
-#include <linux/mfd/syscon.h>
-#include <linux/module.h>
-#include <linux/of_mdio.h>
-#include <linux/of_net.h>
-#include <linux/of_platform.h>
-#include <linux/phy.h>
-#include <linux/phylink.h>
-#include <dt-bindings/mips/lantiq_rcu_gphy.h>
-
-struct xway_gphy_match_data {
- char *fe_firmware_name;
- char *ge_firmware_name;
-};
-
-struct gswip_pce_table_entry {
- u16 index; // PCE_TBL_ADDR.ADDR = pData->table_index
- u16 table; // PCE_TBL_CTRL.ADDR = pData->table
- u16 key[8];
- u16 val[5];
- u16 mask;
- u8 gmap;
- bool type;
- bool valid;
- bool key_mode;
-};
-
-struct gswip_rmon_cnt_desc {
- unsigned int size;
- unsigned int offset;
- const char *name;
-};
-
-#define MIB_DESC(_size, _offset, _name) {.size = _size, .offset = _offset, .name = _name}
-
-static const struct gswip_rmon_cnt_desc gswip_rmon_cnt[] = {
- /** Receive Packet Count (only packets that are accepted and not discarded). */
- MIB_DESC(1, 0x1F, "RxGoodPkts"),
- MIB_DESC(1, 0x23, "RxUnicastPkts"),
- MIB_DESC(1, 0x22, "RxMulticastPkts"),
- MIB_DESC(1, 0x21, "RxFCSErrorPkts"),
- MIB_DESC(1, 0x1D, "RxUnderSizeGoodPkts"),
- MIB_DESC(1, 0x1E, "RxUnderSizeErrorPkts"),
- MIB_DESC(1, 0x1B, "RxOversizeGoodPkts"),
- MIB_DESC(1, 0x1C, "RxOversizeErrorPkts"),
- MIB_DESC(1, 0x20, "RxGoodPausePkts"),
- MIB_DESC(1, 0x1A, "RxAlignErrorPkts"),
- MIB_DESC(1, 0x12, "Rx64BytePkts"),
- MIB_DESC(1, 0x13, "Rx127BytePkts"),
- MIB_DESC(1, 0x14, "Rx255BytePkts"),
- MIB_DESC(1, 0x15, "Rx511BytePkts"),
- MIB_DESC(1, 0x16, "Rx1023BytePkts"),
- /** Receive Size 1024-1522 (or more, if configured) Packet Count. */
- MIB_DESC(1, 0x17, "RxMaxBytePkts"),
- MIB_DESC(1, 0x18, "RxDroppedPkts"),
- MIB_DESC(1, 0x19, "RxFilteredPkts"),
- MIB_DESC(2, 0x24, "RxGoodBytes"),
- MIB_DESC(2, 0x26, "RxBadBytes"),
- MIB_DESC(1, 0x11, "TxAcmDroppedPkts"),
- MIB_DESC(1, 0x0C, "TxGoodPkts"),
- MIB_DESC(1, 0x06, "TxUnicastPkts"),
- MIB_DESC(1, 0x07, "TxMulticastPkts"),
- MIB_DESC(1, 0x00, "Tx64BytePkts"),
- MIB_DESC(1, 0x01, "Tx127BytePkts"),
- MIB_DESC(1, 0x02, "Tx255BytePkts"),
- MIB_DESC(1, 0x03, "Tx511BytePkts"),
- MIB_DESC(1, 0x04, "Tx1023BytePkts"),
- /** Transmit Size 1024-1522 (or more, if configured) Packet Count. */
- MIB_DESC(1, 0x05, "TxMaxBytePkts"),
- MIB_DESC(1, 0x08, "TxSingleCollCount"),
- MIB_DESC(1, 0x09, "TxMultCollCount"),
- MIB_DESC(1, 0x0A, "TxLateCollCount"),
- MIB_DESC(1, 0x0B, "TxExcessCollCount"),
- MIB_DESC(1, 0x0D, "TxPauseCount"),
- MIB_DESC(1, 0x10, "TxDroppedPkts"),
- MIB_DESC(2, 0x0E, "TxGoodBytes"),
-};
-
-static u32 gswip_switch_r_timeout(struct gswip_priv *priv, u32 offset,
- u32 cleared)
-{
- u32 val;
-
- return regmap_read_poll_timeout(priv->gswip, offset, val,
- !(val & cleared), 20, 50000);
-}
-
-static void gswip_mii_mask_cfg(struct gswip_priv *priv, u32 mask, u32 set,
- int port)
-{
- int reg_port;
-
- /* MII_CFG register only exists for MII ports */
- if (!(priv->hw_info->mii_ports & BIT(port)))
- return;
-
- reg_port = port + priv->hw_info->mii_port_reg_offset;
-
- regmap_write_bits(priv->mii, GSWIP_MII_CFGp(reg_port), mask,
- set);
-}
-
-static void gswip_mii_mask_pcdu(struct gswip_priv *priv, u32 mask, u32 set,
- int port)
-{
- int reg_port;
-
- /* MII_PCDU register only exists for MII ports */
- if (!(priv->hw_info->mii_ports & BIT(port)))
- return;
-
- reg_port = port + priv->hw_info->mii_port_reg_offset;
-
- switch (reg_port) {
- case 0:
- regmap_write_bits(priv->mii, GSWIP_MII_PCDU0, mask, set);
- break;
- case 1:
- regmap_write_bits(priv->mii, GSWIP_MII_PCDU1, mask, set);
- break;
- case 5:
- regmap_write_bits(priv->mii, GSWIP_MII_PCDU5, mask, set);
- break;
- }
-}
-
-static int gswip_mdio_poll(struct gswip_priv *priv)
-{
- u32 ctrl;
-
- return regmap_read_poll_timeout(priv->mdio, GSWIP_MDIO_CTRL, ctrl,
- !(ctrl & GSWIP_MDIO_CTRL_BUSY), 40, 4000);
-}
-
-static int gswip_mdio_wr(struct mii_bus *bus, int addr, int reg, u16 val)
-{
- struct gswip_priv *priv = bus->priv;
- int err;
-
- err = gswip_mdio_poll(priv);
- if (err) {
- dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
- return err;
- }
-
- regmap_write(priv->mdio, GSWIP_MDIO_WRITE, val);
- regmap_write(priv->mdio, GSWIP_MDIO_CTRL,
- GSWIP_MDIO_CTRL_BUSY | GSWIP_MDIO_CTRL_WR |
- ((addr & GSWIP_MDIO_CTRL_PHYAD_MASK) << GSWIP_MDIO_CTRL_PHYAD_SHIFT) |
- (reg & GSWIP_MDIO_CTRL_REGAD_MASK));
-
- return 0;
-}
-
-static int gswip_mdio_rd(struct mii_bus *bus, int addr, int reg)
-{
- struct gswip_priv *priv = bus->priv;
- u32 val;
- int err;
-
- err = gswip_mdio_poll(priv);
- if (err) {
- dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
- return err;
- }
-
- regmap_write(priv->mdio, GSWIP_MDIO_CTRL,
- GSWIP_MDIO_CTRL_BUSY | GSWIP_MDIO_CTRL_RD |
- ((addr & GSWIP_MDIO_CTRL_PHYAD_MASK) << GSWIP_MDIO_CTRL_PHYAD_SHIFT) |
- (reg & GSWIP_MDIO_CTRL_REGAD_MASK));
-
- err = gswip_mdio_poll(priv);
- if (err) {
- dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
- return err;
- }
-
- err = regmap_read(priv->mdio, GSWIP_MDIO_READ, &val);
- if (err)
- return err;
-
- return val;
-}
-
-static int gswip_mdio(struct gswip_priv *priv)
-{
- struct device_node *mdio_np, *switch_np = priv->dev->of_node;
- struct device *dev = priv->dev;
- struct mii_bus *bus;
- int err = 0;
-
- mdio_np = of_get_compatible_child(switch_np, "lantiq,xrx200-mdio");
- if (!mdio_np)
- mdio_np = of_get_child_by_name(switch_np, "mdio");
-
- if (!of_device_is_available(mdio_np))
- goto out_put_node;
-
- bus = devm_mdiobus_alloc(dev);
- if (!bus) {
- err = -ENOMEM;
- goto out_put_node;
- }
-
- bus->priv = priv;
- bus->read = gswip_mdio_rd;
- bus->write = gswip_mdio_wr;
- bus->name = "lantiq,xrx200-mdio";
- snprintf(bus->id, MII_BUS_ID_SIZE, "%s-mii", dev_name(priv->dev));
- bus->parent = priv->dev;
-
- err = devm_of_mdiobus_register(dev, bus, mdio_np);
-
-out_put_node:
- of_node_put(mdio_np);
-
- return err;
-}
-
-static int gswip_pce_table_entry_read(struct gswip_priv *priv,
- struct gswip_pce_table_entry *tbl)
-{
- int i;
- int err;
- u32 crtl;
- u32 tmp;
- u16 addr_mode = tbl->key_mode ? GSWIP_PCE_TBL_CTRL_OPMOD_KSRD :
- GSWIP_PCE_TBL_CTRL_OPMOD_ADRD;
-
- mutex_lock(&priv->pce_table_lock);
-
- err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
- GSWIP_PCE_TBL_CTRL_BAS);
- if (err)
- goto out_unlock;
-
- regmap_write(priv->gswip, GSWIP_PCE_TBL_ADDR, tbl->index);
- regmap_write_bits(priv->gswip, GSWIP_PCE_TBL_CTRL,
- GSWIP_PCE_TBL_CTRL_ADDR_MASK |
- GSWIP_PCE_TBL_CTRL_OPMOD_MASK |
- GSWIP_PCE_TBL_CTRL_BAS,
- tbl->table | addr_mode | GSWIP_PCE_TBL_CTRL_BAS);
-
- err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
- GSWIP_PCE_TBL_CTRL_BAS);
- if (err)
- goto out_unlock;
-
- for (i = 0; i < ARRAY_SIZE(tbl->key); i++) {
- err = regmap_read(priv->gswip, GSWIP_PCE_TBL_KEY(i), &tmp);
- if (err)
- goto out_unlock;
- tbl->key[i] = tmp;
- }
- for (i = 0; i < ARRAY_SIZE(tbl->val); i++) {
- err = regmap_read(priv->gswip, GSWIP_PCE_TBL_VAL(i), &tmp);
- if (err)
- goto out_unlock;
- tbl->val[i] = tmp;
- }
-
- err = regmap_read(priv->gswip, GSWIP_PCE_TBL_MASK, &tmp);
- if (err)
- goto out_unlock;
-
- tbl->mask = tmp;
- err = regmap_read(priv->gswip, GSWIP_PCE_TBL_CTRL, &crtl);
- if (err)
- goto out_unlock;
-
- tbl->type = !!(crtl & GSWIP_PCE_TBL_CTRL_TYPE);
- tbl->valid = !!(crtl & GSWIP_PCE_TBL_CTRL_VLD);
- tbl->gmap = (crtl & GSWIP_PCE_TBL_CTRL_GMAP_MASK) >> 7;
-
-out_unlock:
- mutex_unlock(&priv->pce_table_lock);
-
- return err;
-}
-
-static int gswip_pce_table_entry_write(struct gswip_priv *priv,
- struct gswip_pce_table_entry *tbl)
-{
- int i;
- int err;
- u32 crtl;
- u16 addr_mode = tbl->key_mode ? GSWIP_PCE_TBL_CTRL_OPMOD_KSWR :
- GSWIP_PCE_TBL_CTRL_OPMOD_ADWR;
-
- mutex_lock(&priv->pce_table_lock);
-
- err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
- GSWIP_PCE_TBL_CTRL_BAS);
- if (err) {
- mutex_unlock(&priv->pce_table_lock);
- return err;
- }
-
- regmap_write(priv->gswip, GSWIP_PCE_TBL_ADDR, tbl->index);
- regmap_write_bits(priv->gswip, GSWIP_PCE_TBL_CTRL,
- GSWIP_PCE_TBL_CTRL_ADDR_MASK |
- GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
- tbl->table | addr_mode);
-
- for (i = 0; i < ARRAY_SIZE(tbl->key); i++)
- regmap_write(priv->gswip, GSWIP_PCE_TBL_KEY(i), tbl->key[i]);
-
- for (i = 0; i < ARRAY_SIZE(tbl->val); i++)
- regmap_write(priv->gswip, GSWIP_PCE_TBL_VAL(i), tbl->val[i]);
-
- regmap_write_bits(priv->gswip, GSWIP_PCE_TBL_CTRL,
- GSWIP_PCE_TBL_CTRL_ADDR_MASK |
- GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
- tbl->table | addr_mode);
-
- regmap_write(priv->gswip, GSWIP_PCE_TBL_MASK, tbl->mask);
-
- regmap_read(priv->gswip, GSWIP_PCE_TBL_CTRL, &crtl);
- crtl &= ~(GSWIP_PCE_TBL_CTRL_TYPE | GSWIP_PCE_TBL_CTRL_VLD |
- GSWIP_PCE_TBL_CTRL_GMAP_MASK);
- if (tbl->type)
- crtl |= GSWIP_PCE_TBL_CTRL_TYPE;
- if (tbl->valid)
- crtl |= GSWIP_PCE_TBL_CTRL_VLD;
- crtl |= (tbl->gmap << 7) & GSWIP_PCE_TBL_CTRL_GMAP_MASK;
- crtl |= GSWIP_PCE_TBL_CTRL_BAS;
- regmap_write(priv->gswip, GSWIP_PCE_TBL_CTRL, crtl);
-
- err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
- GSWIP_PCE_TBL_CTRL_BAS);
-
- mutex_unlock(&priv->pce_table_lock);
-
- return err;
-}
-
-/* Add the LAN port into a bridge with the CPU port by
- * default. This prevents automatic forwarding of
- * packages between the LAN ports when no explicit
- * bridge is configured.
- */
-static int gswip_add_single_port_br(struct gswip_priv *priv, int port, bool add)
-{
- struct gswip_pce_table_entry vlan_active = {0,};
- struct gswip_pce_table_entry vlan_mapping = {0,};
- int err;
-
- vlan_active.index = port + 1;
- vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
- vlan_active.key[0] = GSWIP_VLAN_UNAWARE_PVID;
- vlan_active.val[0] = port + 1 /* fid */;
- vlan_active.valid = add;
- err = gswip_pce_table_entry_write(priv, &vlan_active);
- if (err) {
- dev_err(priv->dev, "failed to write active VLAN: %d\n", err);
- return err;
- }
-
- if (!add)
- return 0;
-
- vlan_mapping.index = port + 1;
- vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
- vlan_mapping.val[0] = GSWIP_VLAN_UNAWARE_PVID;
- vlan_mapping.val[1] = BIT(port) | dsa_cpu_ports(priv->ds);
- vlan_mapping.val[2] = 0;
- err = gswip_pce_table_entry_write(priv, &vlan_mapping);
- if (err) {
- dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
- return err;
- }
-
- return 0;
-}
-
-static int gswip_port_setup(struct dsa_switch *ds, int port)
-{
- struct gswip_priv *priv = ds->priv;
- int err;
-
- if (!dsa_is_cpu_port(ds, port)) {
- err = gswip_add_single_port_br(priv, port, true);
- if (err)
- return err;
- }
-
- return 0;
-}
-
-static int gswip_port_enable(struct dsa_switch *ds, int port,
- struct phy_device *phydev)
-{
- struct gswip_priv *priv = ds->priv;
-
- if (!dsa_is_cpu_port(ds, port)) {
- u32 mdio_phy = 0;
-
- if (phydev)
- mdio_phy = phydev->mdio.addr & GSWIP_MDIO_PHY_ADDR_MASK;
-
- regmap_write_bits(priv->mdio, GSWIP_MDIO_PHYp(port),
- GSWIP_MDIO_PHY_ADDR_MASK,
- mdio_phy);
- }
-
- /* RMON Counter Enable for port */
- regmap_write(priv->gswip, GSWIP_BM_PCFGp(port), GSWIP_BM_PCFG_CNTEN);
-
- /* enable port fetch/store dma & VLAN Modification */
- regmap_set_bits(priv->gswip, GSWIP_FDMA_PCTRLp(port),
- GSWIP_FDMA_PCTRL_EN | GSWIP_FDMA_PCTRL_VLANMOD_BOTH);
- regmap_set_bits(priv->gswip, GSWIP_SDMA_PCTRLp(port),
- GSWIP_SDMA_PCTRL_EN);
-
- return 0;
-}
-
-static void gswip_port_disable(struct dsa_switch *ds, int port)
-{
- struct gswip_priv *priv = ds->priv;
-
- regmap_clear_bits(priv->gswip, GSWIP_FDMA_PCTRLp(port),
- GSWIP_FDMA_PCTRL_EN);
- regmap_clear_bits(priv->gswip, GSWIP_SDMA_PCTRLp(port),
- GSWIP_SDMA_PCTRL_EN);
-}
-
-static int gswip_pce_load_microcode(struct gswip_priv *priv)
-{
- int i;
- int err;
-
- regmap_write_bits(priv->gswip, GSWIP_PCE_TBL_CTRL,
- GSWIP_PCE_TBL_CTRL_ADDR_MASK |
- GSWIP_PCE_TBL_CTRL_OPMOD_MASK |
- GSWIP_PCE_TBL_CTRL_OPMOD_ADWR,
- GSWIP_PCE_TBL_CTRL_OPMOD_ADWR);
- regmap_write(priv->gswip, GSWIP_PCE_TBL_MASK, 0);
-
- for (i = 0; i < priv->hw_info->pce_microcode_size; i++) {
- regmap_write(priv->gswip, GSWIP_PCE_TBL_ADDR, i);
- regmap_write(priv->gswip, GSWIP_PCE_TBL_VAL(0),
- (*priv->hw_info->pce_microcode)[i].val_0);
- regmap_write(priv->gswip, GSWIP_PCE_TBL_VAL(1),
- (*priv->hw_info->pce_microcode)[i].val_1);
- regmap_write(priv->gswip, GSWIP_PCE_TBL_VAL(2),
- (*priv->hw_info->pce_microcode)[i].val_2);
- regmap_write(priv->gswip, GSWIP_PCE_TBL_VAL(3),
- (*priv->hw_info->pce_microcode)[i].val_3);
-
- /* start the table access: */
- regmap_set_bits(priv->gswip, GSWIP_PCE_TBL_CTRL,
- GSWIP_PCE_TBL_CTRL_BAS);
- err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
- GSWIP_PCE_TBL_CTRL_BAS);
- if (err)
- return err;
- }
-
- /* tell the switch that the microcode is loaded */
- regmap_set_bits(priv->gswip, GSWIP_PCE_GCTRL_0,
- GSWIP_PCE_GCTRL_0_MC_VALID);
-
- return 0;
-}
-
-static void gswip_port_commit_pvid(struct gswip_priv *priv, int port)
-{
- struct dsa_port *dp = dsa_to_port(priv->ds, port);
- struct net_device *br = dsa_port_bridge_dev_get(dp);
- u32 vinr;
- int idx;
-
- if (!dsa_port_is_user(dp))
- return;
-
- if (br) {
- u16 pvid = GSWIP_VLAN_UNAWARE_PVID;
-
- if (br_vlan_enabled(br))
- br_vlan_get_pvid(br, &pvid);
-
- /* VLAN-aware bridge ports with no PVID will use Active VLAN
- * index 0. The expectation is that this drops all untagged and
- * VID-0 tagged ingress traffic.
- */
- idx = 0;
- for (int i = priv->hw_info->max_ports;
- i < ARRAY_SIZE(priv->vlans); i++) {
- if (priv->vlans[i].bridge == br &&
- priv->vlans[i].vid == pvid) {
- idx = i;
- break;
- }
- }
- } else {
- /* The Active VLAN table index as configured by
- * gswip_add_single_port_br()
- */
- idx = port + 1;
- }
-
- vinr = idx ? GSWIP_PCE_VCTRL_VINR_ALL : GSWIP_PCE_VCTRL_VINR_TAGGED;
- regmap_write_bits(priv->gswip, GSWIP_PCE_VCTRL(port),
- GSWIP_PCE_VCTRL_VINR,
- FIELD_PREP(GSWIP_PCE_VCTRL_VINR, vinr));
-
- /* Note that in GSWIP 2.2 VLAN mode the VID needs to be programmed
- * directly instead of referencing the index in the Active VLAN Tablet.
- * However, without the VLANMD bit (9) in PCE_GCTRL_1 (0x457) even
- * GSWIP 2.2 and newer hardware maintain the GSWIP 2.1 behavior.
- */
- regmap_write(priv->gswip, GSWIP_PCE_DEFPVID(port), idx);
-}
-
-static int gswip_port_vlan_filtering(struct dsa_switch *ds, int port,
- bool vlan_filtering,
- struct netlink_ext_ack *extack)
-{
- struct gswip_priv *priv = ds->priv;
-
- if (vlan_filtering) {
- /* Use tag based VLAN */
- regmap_write_bits(priv->gswip, GSWIP_PCE_VCTRL(port),
- GSWIP_PCE_VCTRL_VSR |
- GSWIP_PCE_VCTRL_UVR |
- GSWIP_PCE_VCTRL_VIMR |
- GSWIP_PCE_VCTRL_VEMR |
- GSWIP_PCE_VCTRL_VID0,
- GSWIP_PCE_VCTRL_UVR |
- GSWIP_PCE_VCTRL_VIMR |
- GSWIP_PCE_VCTRL_VEMR |
- GSWIP_PCE_VCTRL_VID0);
- regmap_clear_bits(priv->gswip, GSWIP_PCE_PCTRL_0p(port),
- GSWIP_PCE_PCTRL_0_TVM);
- } else {
- /* Use port based VLAN */
- regmap_write_bits(priv->gswip, GSWIP_PCE_VCTRL(port),
- GSWIP_PCE_VCTRL_UVR |
- GSWIP_PCE_VCTRL_VIMR |
- GSWIP_PCE_VCTRL_VEMR |
- GSWIP_PCE_VCTRL_VID0 |
- GSWIP_PCE_VCTRL_VSR,
- GSWIP_PCE_VCTRL_VSR);
- regmap_set_bits(priv->gswip, GSWIP_PCE_PCTRL_0p(port),
- GSWIP_PCE_PCTRL_0_TVM);
- }
-
- gswip_port_commit_pvid(priv, port);
-
- return 0;
-}
-
-static int gswip_setup(struct dsa_switch *ds)
-{
- unsigned int cpu_ports = dsa_cpu_ports(ds);
- struct gswip_priv *priv = ds->priv;
- struct dsa_port *cpu_dp;
- int err, i;
-
- regmap_write(priv->gswip, GSWIP_SWRES, GSWIP_SWRES_R0);
- usleep_range(5000, 10000);
- regmap_write(priv->gswip, GSWIP_SWRES, 0);
-
- /* disable port fetch/store dma on all ports */
- for (i = 0; i < priv->hw_info->max_ports; i++) {
- gswip_port_disable(ds, i);
- gswip_port_vlan_filtering(ds, i, false, NULL);
- }
-
- /* enable Switch */
- regmap_set_bits(priv->mdio, GSWIP_MDIO_GLOB, GSWIP_MDIO_GLOB_ENABLE);
-
- err = gswip_pce_load_microcode(priv);
- if (err) {
- dev_err(priv->dev, "writing PCE microcode failed, %i\n", err);
- return err;
- }
-
- /* Default unknown Broadcast/Multicast/Unicast port maps */
- regmap_write(priv->gswip, GSWIP_PCE_PMAP1, cpu_ports);
- regmap_write(priv->gswip, GSWIP_PCE_PMAP2, cpu_ports);
- regmap_write(priv->gswip, GSWIP_PCE_PMAP3, cpu_ports);
-
- /* Deactivate MDIO PHY auto polling. Some PHYs as the AR8030 have an
- * interoperability problem with this auto polling mechanism because
- * their status registers think that the link is in a different state
- * than it actually is. For the AR8030 it has the BMSR_ESTATEN bit set
- * as well as ESTATUS_1000_TFULL and ESTATUS_1000_XFULL. This makes the
- * auto polling state machine consider the link being negotiated with
- * 1Gbit/s. Since the PHY itself is a Fast Ethernet RMII PHY this leads
- * to the switch port being completely dead (RX and TX are both not
- * working).
- * Also with various other PHY / port combinations (PHY11G GPHY, PHY22F
- * GPHY, external RGMII PEF7071/7072) any traffic would stop. Sometimes
- * it would work fine for a few minutes to hours and then stop, on
- * other device it would no traffic could be sent or received at all.
- * Testing shows that when PHY auto polling is disabled these problems
- * go away.
- */
- regmap_write(priv->mdio, GSWIP_MDIO_MDC_CFG0, 0x0);
-
- /* Configure the MDIO Clock 2.5 MHz */
- regmap_write_bits(priv->mdio, GSWIP_MDIO_MDC_CFG1, 0xff, 0x09);
-
- /* bring up the mdio bus */
- err = gswip_mdio(priv);
- if (err) {
- dev_err(priv->dev, "mdio bus setup failed\n");
- return err;
- }
-
- /* Disable the xMII interface and clear it's isolation bit */
- for (i = 0; i < priv->hw_info->max_ports; i++)
- gswip_mii_mask_cfg(priv,
- GSWIP_MII_CFG_EN | GSWIP_MII_CFG_ISOLATE,
- 0, i);
-
- dsa_switch_for_each_cpu_port(cpu_dp, ds) {
- /* enable special tag insertion on cpu port */
- regmap_set_bits(priv->gswip, GSWIP_FDMA_PCTRLp(cpu_dp->index),
- GSWIP_FDMA_PCTRL_STEN);
-
- /* accept special tag in ingress direction */
- regmap_set_bits(priv->gswip,
- GSWIP_PCE_PCTRL_0p(cpu_dp->index),
- GSWIP_PCE_PCTRL_0_INGRESS);
- }
-
- regmap_set_bits(priv->gswip, GSWIP_BM_QUEUE_GCTRL,
- GSWIP_BM_QUEUE_GCTRL_GL_MOD);
-
- /* VLAN aware Switching */
- regmap_set_bits(priv->gswip, GSWIP_PCE_GCTRL_0,
- GSWIP_PCE_GCTRL_0_VLAN);
-
- /* Flush MAC Table */
- regmap_set_bits(priv->gswip, GSWIP_PCE_GCTRL_0,
- GSWIP_PCE_GCTRL_0_MTFL);
-
- err = gswip_switch_r_timeout(priv, GSWIP_PCE_GCTRL_0,
- GSWIP_PCE_GCTRL_0_MTFL);
- if (err) {
- dev_err(priv->dev, "MAC flushing didn't finish\n");
- return err;
- }
-
- ds->mtu_enforcement_ingress = true;
-
- return 0;
-}
-
-static enum dsa_tag_protocol gswip_get_tag_protocol(struct dsa_switch *ds,
- int port,
- enum dsa_tag_protocol mp)
-{
- struct gswip_priv *priv = ds->priv;
-
- return priv->hw_info->tag_protocol;
-}
-
-static int gswip_vlan_active_create(struct gswip_priv *priv,
- struct net_device *bridge,
- int fid, u16 vid)
-{
- struct gswip_pce_table_entry vlan_active = {0,};
- unsigned int max_ports = priv->hw_info->max_ports;
- int idx = -1;
- int err;
- int i;
-
- /* Look for a free slot */
- for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
- if (!priv->vlans[i].bridge) {
- idx = i;
- break;
- }
- }
-
- if (idx == -1)
- return -ENOSPC;
-
- if (fid == -1)
- fid = idx;
-
- vlan_active.index = idx;
- vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
- vlan_active.key[0] = vid;
- vlan_active.val[0] = fid;
- vlan_active.valid = true;
-
- err = gswip_pce_table_entry_write(priv, &vlan_active);
- if (err) {
- dev_err(priv->dev, "failed to write active VLAN: %d\n", err);
- return err;
- }
-
- priv->vlans[idx].bridge = bridge;
- priv->vlans[idx].vid = vid;
- priv->vlans[idx].fid = fid;
-
- return idx;
-}
-
-static int gswip_vlan_active_remove(struct gswip_priv *priv, int idx)
-{
- struct gswip_pce_table_entry vlan_active = {0,};
- int err;
-
- vlan_active.index = idx;
- vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
- vlan_active.valid = false;
- err = gswip_pce_table_entry_write(priv, &vlan_active);
- if (err)
- dev_err(priv->dev, "failed to delete active VLAN: %d\n", err);
- priv->vlans[idx].bridge = NULL;
-
- return err;
-}
-
-static int gswip_vlan_add(struct gswip_priv *priv, struct net_device *bridge,
- int port, u16 vid, bool untagged, bool pvid,
- bool vlan_aware)
-{
- struct gswip_pce_table_entry vlan_mapping = {0,};
- unsigned int max_ports = priv->hw_info->max_ports;
- unsigned int cpu_ports = dsa_cpu_ports(priv->ds);
- bool active_vlan_created = false;
- int fid = -1, idx = -1;
- int i, err;
-
- /* Check if there is already a page for this bridge */
- for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
- if (priv->vlans[i].bridge == bridge) {
- if (vlan_aware) {
- if (fid != -1 && fid != priv->vlans[i].fid)
- dev_err(priv->dev, "one bridge with multiple flow ids\n");
- fid = priv->vlans[i].fid;
- }
- if (priv->vlans[i].vid == vid) {
- idx = i;
- break;
- }
- }
- }
-
- /* If this bridge is not programmed yet, add a Active VLAN table
- * entry in a free slot and prepare the VLAN mapping table entry.
- */
- if (idx == -1) {
- idx = gswip_vlan_active_create(priv, bridge, fid, vid);
- if (idx < 0)
- return idx;
- active_vlan_created = true;
-
- vlan_mapping.index = idx;
- vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
- } else {
- /* Read the existing VLAN mapping entry from the switch */
- vlan_mapping.index = idx;
- vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
- err = gswip_pce_table_entry_read(priv, &vlan_mapping);
- if (err) {
- dev_err(priv->dev, "failed to read VLAN mapping: %d\n",
- err);
- return err;
- }
- }
-
- /* VLAN ID byte, maps to the VLAN ID of vlan active table */
- vlan_mapping.val[0] = vid;
- /* Update the VLAN mapping entry and write it to the switch */
- vlan_mapping.val[1] |= cpu_ports;
- vlan_mapping.val[1] |= BIT(port);
- if (vlan_aware)
- vlan_mapping.val[2] |= cpu_ports;
- if (untagged)
- vlan_mapping.val[2] &= ~BIT(port);
- else
- vlan_mapping.val[2] |= BIT(port);
- err = gswip_pce_table_entry_write(priv, &vlan_mapping);
- if (err) {
- dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
- /* In case an Active VLAN was creaetd delete it again */
- if (active_vlan_created)
- gswip_vlan_active_remove(priv, idx);
- return err;
- }
-
- gswip_port_commit_pvid(priv, port);
-
- return 0;
-}
-
-static int gswip_vlan_remove(struct gswip_priv *priv,
- struct net_device *bridge, int port,
- u16 vid)
-{
- struct gswip_pce_table_entry vlan_mapping = {0,};
- unsigned int max_ports = priv->hw_info->max_ports;
- int idx = -1;
- int i;
- int err;
-
- /* Check if there is already a page for this bridge */
- for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
- if (priv->vlans[i].bridge == bridge &&
- priv->vlans[i].vid == vid) {
- idx = i;
- break;
- }
- }
-
- if (idx == -1) {
- dev_err(priv->dev, "Port %d cannot find VID %u of bridge %s\n",
- port, vid, bridge ? bridge->name : "(null)");
- return -ENOENT;
- }
-
- vlan_mapping.index = idx;
- vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
- err = gswip_pce_table_entry_read(priv, &vlan_mapping);
- if (err) {
- dev_err(priv->dev, "failed to read VLAN mapping: %d\n", err);
- return err;
- }
-
- vlan_mapping.val[1] &= ~BIT(port);
- vlan_mapping.val[2] &= ~BIT(port);
- err = gswip_pce_table_entry_write(priv, &vlan_mapping);
- if (err) {
- dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
- return err;
- }
-
- /* In case all ports are removed from the bridge, remove the VLAN */
- if (!(vlan_mapping.val[1] & ~dsa_cpu_ports(priv->ds))) {
- err = gswip_vlan_active_remove(priv, idx);
- if (err) {
- dev_err(priv->dev, "failed to write active VLAN: %d\n",
- err);
- return err;
- }
- }
-
- gswip_port_commit_pvid(priv, port);
-
- return 0;
-}
-
-static int gswip_port_bridge_join(struct dsa_switch *ds, int port,
- struct dsa_bridge bridge,
- bool *tx_fwd_offload,
- struct netlink_ext_ack *extack)
-{
- struct net_device *br = bridge.dev;
- struct gswip_priv *priv = ds->priv;
- int err;
-
- /* Set up the VLAN for VLAN-unaware bridging for this port, and remove
- * it from the "single-port bridge" through which it was operating as
- * standalone.
- */
- err = gswip_vlan_add(priv, br, port, GSWIP_VLAN_UNAWARE_PVID,
- true, true, false);
- if (err)
- return err;
-
- return gswip_add_single_port_br(priv, port, false);
-}
-
-static void gswip_port_bridge_leave(struct dsa_switch *ds, int port,
- struct dsa_bridge bridge)
-{
- struct net_device *br = bridge.dev;
- struct gswip_priv *priv = ds->priv;
-
- /* Add the port back to the "single-port bridge", and remove it from
- * the VLAN-unaware PVID created for this bridge.
- */
- gswip_add_single_port_br(priv, port, true);
- gswip_vlan_remove(priv, br, port, GSWIP_VLAN_UNAWARE_PVID);
-}
-
-static int gswip_port_vlan_prepare(struct dsa_switch *ds, int port,
- const struct switchdev_obj_port_vlan *vlan,
- struct netlink_ext_ack *extack)
-{
- struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
- struct gswip_priv *priv = ds->priv;
- unsigned int max_ports = priv->hw_info->max_ports;
- int pos = max_ports;
- int i, idx = -1;
-
- /* We only support VLAN filtering on bridges */
- if (!dsa_is_cpu_port(ds, port) && !bridge)
- return -EOPNOTSUPP;
-
- /* Check if there is already a page for this VLAN */
- for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
- if (priv->vlans[i].bridge == bridge &&
- priv->vlans[i].vid == vlan->vid) {
- idx = i;
- break;
- }
- }
-
- /* If this VLAN is not programmed yet, we have to reserve
- * one entry in the VLAN table. Make sure we start at the
- * next position round.
- */
- if (idx == -1) {
- /* Look for a free slot */
- for (; pos < ARRAY_SIZE(priv->vlans); pos++) {
- if (!priv->vlans[pos].bridge) {
- idx = pos;
- pos++;
- break;
- }
- }
-
- if (idx == -1) {
- NL_SET_ERR_MSG_MOD(extack, "No slot in VLAN table");
- return -ENOSPC;
- }
- }
-
- return 0;
-}
-
-static int gswip_port_vlan_add(struct dsa_switch *ds, int port,
- const struct switchdev_obj_port_vlan *vlan,
- struct netlink_ext_ack *extack)
-{
- struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
- struct gswip_priv *priv = ds->priv;
- bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
- bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
- int err;
-
- if (vlan->vid == GSWIP_VLAN_UNAWARE_PVID)
- return 0;
-
- err = gswip_port_vlan_prepare(ds, port, vlan, extack);
- if (err)
- return err;
-
- /* We have to receive all packets on the CPU port and should not
- * do any VLAN filtering here. This is also called with bridge
- * NULL and then we do not know for which bridge to configure
- * this.
- */
- if (dsa_is_cpu_port(ds, port))
- return 0;
-
- return gswip_vlan_add(priv, bridge, port, vlan->vid, untagged, pvid,
- true);
-}
-
-static int gswip_port_vlan_del(struct dsa_switch *ds, int port,
- const struct switchdev_obj_port_vlan *vlan)
-{
- struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
- struct gswip_priv *priv = ds->priv;
-
- if (vlan->vid == GSWIP_VLAN_UNAWARE_PVID)
- return 0;
-
- /* We have to receive all packets on the CPU port and should not
- * do any VLAN filtering here. This is also called with bridge
- * NULL and then we do not know for which bridge to configure
- * this.
- */
- if (dsa_is_cpu_port(ds, port))
- return 0;
-
- return gswip_vlan_remove(priv, bridge, port, vlan->vid);
-}
-
-static void gswip_port_fast_age(struct dsa_switch *ds, int port)
-{
- struct gswip_priv *priv = ds->priv;
- struct gswip_pce_table_entry mac_bridge = {0,};
- int i;
- int err;
-
- for (i = 0; i < 2048; i++) {
- mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
- mac_bridge.index = i;
-
- err = gswip_pce_table_entry_read(priv, &mac_bridge);
- if (err) {
- dev_err(priv->dev, "failed to read mac bridge: %d\n",
- err);
- return;
- }
-
- if (!mac_bridge.valid)
- continue;
-
- if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC)
- continue;
-
- if (port != FIELD_GET(GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT,
- mac_bridge.val[0]))
- continue;
-
- mac_bridge.valid = false;
- err = gswip_pce_table_entry_write(priv, &mac_bridge);
- if (err) {
- dev_err(priv->dev, "failed to write mac bridge: %d\n",
- err);
- return;
- }
- }
-}
-
-static void gswip_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
-{
- struct gswip_priv *priv = ds->priv;
- u32 stp_state;
-
- switch (state) {
- case BR_STATE_DISABLED:
- regmap_clear_bits(priv->gswip, GSWIP_SDMA_PCTRLp(port),
- GSWIP_SDMA_PCTRL_EN);
- return;
- case BR_STATE_BLOCKING:
- case BR_STATE_LISTENING:
- stp_state = GSWIP_PCE_PCTRL_0_PSTATE_LISTEN;
- break;
- case BR_STATE_LEARNING:
- stp_state = GSWIP_PCE_PCTRL_0_PSTATE_LEARNING;
- break;
- case BR_STATE_FORWARDING:
- stp_state = GSWIP_PCE_PCTRL_0_PSTATE_FORWARDING;
- break;
- default:
- dev_err(priv->dev, "invalid STP state: %d\n", state);
- return;
- }
-
- regmap_set_bits(priv->gswip, GSWIP_SDMA_PCTRLp(port),
- GSWIP_SDMA_PCTRL_EN);
- regmap_write_bits(priv->gswip, GSWIP_PCE_PCTRL_0p(port),
- GSWIP_PCE_PCTRL_0_PSTATE_MASK,
- stp_state);
-}
-
-static int gswip_port_fdb(struct dsa_switch *ds, int port,
- struct net_device *bridge, const unsigned char *addr,
- u16 vid, bool add)
-{
- struct gswip_priv *priv = ds->priv;
- struct gswip_pce_table_entry mac_bridge = {0,};
- unsigned int max_ports = priv->hw_info->max_ports;
- int fid = -1;
- int i;
- int err;
-
- for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
- if (priv->vlans[i].bridge == bridge) {
- fid = priv->vlans[i].fid;
- break;
- }
- }
-
- if (fid == -1) {
- dev_err(priv->dev, "no FID found for bridge %s\n",
- bridge->name);
- return -EINVAL;
- }
-
- mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
- mac_bridge.key_mode = true;
- mac_bridge.key[0] = addr[5] | (addr[4] << 8);
- mac_bridge.key[1] = addr[3] | (addr[2] << 8);
- mac_bridge.key[2] = addr[1] | (addr[0] << 8);
- mac_bridge.key[3] = FIELD_PREP(GSWIP_TABLE_MAC_BRIDGE_KEY3_FID, fid);
- mac_bridge.val[0] = add ? BIT(port) : 0; /* port map */
- mac_bridge.val[1] = GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC;
- mac_bridge.valid = add;
-
- err = gswip_pce_table_entry_write(priv, &mac_bridge);
- if (err)
- dev_err(priv->dev, "failed to write mac bridge: %d\n", err);
-
- return err;
-}
-
-static int gswip_port_fdb_add(struct dsa_switch *ds, int port,
- const unsigned char *addr, u16 vid,
- struct dsa_db db)
-{
- if (db.type != DSA_DB_BRIDGE)
- return -EOPNOTSUPP;
-
- return gswip_port_fdb(ds, port, db.bridge.dev, addr, vid, true);
-}
-
-static int gswip_port_fdb_del(struct dsa_switch *ds, int port,
- const unsigned char *addr, u16 vid,
- struct dsa_db db)
-{
- if (db.type != DSA_DB_BRIDGE)
- return -EOPNOTSUPP;
-
- return gswip_port_fdb(ds, port, db.bridge.dev, addr, vid, false);
-}
-
-static int gswip_port_fdb_dump(struct dsa_switch *ds, int port,
- dsa_fdb_dump_cb_t *cb, void *data)
-{
- struct gswip_priv *priv = ds->priv;
- struct gswip_pce_table_entry mac_bridge = {0,};
- unsigned char addr[ETH_ALEN];
- int i;
- int err;
-
- for (i = 0; i < 2048; i++) {
- mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
- mac_bridge.index = i;
-
- err = gswip_pce_table_entry_read(priv, &mac_bridge);
- if (err) {
- dev_err(priv->dev,
- "failed to read mac bridge entry %d: %d\n",
- i, err);
- return err;
- }
-
- if (!mac_bridge.valid)
- continue;
-
- addr[5] = mac_bridge.key[0] & 0xff;
- addr[4] = (mac_bridge.key[0] >> 8) & 0xff;
- addr[3] = mac_bridge.key[1] & 0xff;
- addr[2] = (mac_bridge.key[1] >> 8) & 0xff;
- addr[1] = mac_bridge.key[2] & 0xff;
- addr[0] = (mac_bridge.key[2] >> 8) & 0xff;
- if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC) {
- if (mac_bridge.val[0] & BIT(port)) {
- err = cb(addr, 0, true, data);
- if (err)
- return err;
- }
- } else {
- if (port == FIELD_GET(GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT,
- mac_bridge.val[0])) {
- err = cb(addr, 0, false, data);
- if (err)
- return err;
- }
- }
- }
- return 0;
-}
-
-static int gswip_port_max_mtu(struct dsa_switch *ds, int port)
-{
- /* Includes 8 bytes for special header. */
- return GSWIP_MAX_PACKET_LENGTH - VLAN_ETH_HLEN - ETH_FCS_LEN;
-}
+ * Copyright (C) 2025 Daniel Golle <daniel@...rotopia.org>
+ * Copyright (C) 2017 - 2019 Hauke Mehrtens <hauke@...ke-m.de>
+ * Copyright (C) 2012 John Crispin <john@...ozen.org>
+ * Copyright (C) 2010 Lantiq Deutschland
+ */
-static int gswip_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
-{
- struct gswip_priv *priv = ds->priv;
+#include "lantiq_gswip.h"
+#include "lantiq_pce.h"
- /* CPU port always has maximum mtu of user ports, so use it to set
- * switch frame size, including 8 byte special header.
- */
- if (dsa_is_cpu_port(ds, port)) {
- new_mtu += 8;
- regmap_write(priv->gswip, GSWIP_MAC_FLEN,
- VLAN_ETH_HLEN + new_mtu + ETH_FCS_LEN);
- }
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+#include <dt-bindings/mips/lantiq_rcu_gphy.h>
- /* Enable MLEN for ports with non-standard MTUs, including the special
- * header on the CPU port added above.
- */
- if (new_mtu != ETH_DATA_LEN)
- regmap_set_bits(priv->gswip, GSWIP_MAC_CTRL_2p(port),
- GSWIP_MAC_CTRL_2_MLEN);
- else
- regmap_clear_bits(priv->gswip, GSWIP_MAC_CTRL_2p(port),
- GSWIP_MAC_CTRL_2_MLEN);
+#include <net/dsa.h>
- return 0;
-}
+struct xway_gphy_match_data {
+ char *fe_firmware_name;
+ char *ge_firmware_name;
+};
static void gswip_xrx200_phylink_get_caps(struct dsa_switch *ds, int port,
struct phylink_config *config)
@@ -1291,327 +97,6 @@ static void gswip_xrx300_phylink_get_caps(struct dsa_switch *ds, int port,
MAC_10 | MAC_100 | MAC_1000;
}
-static void gswip_phylink_get_caps(struct dsa_switch *ds, int port,
- struct phylink_config *config)
-{
- struct gswip_priv *priv = ds->priv;
-
- priv->hw_info->phylink_get_caps(ds, port, config);
-}
-
-static void gswip_port_set_link(struct gswip_priv *priv, int port, bool link)
-{
- u32 mdio_phy;
-
- if (link)
- mdio_phy = GSWIP_MDIO_PHY_LINK_UP;
- else
- mdio_phy = GSWIP_MDIO_PHY_LINK_DOWN;
-
- regmap_write_bits(priv->mdio, GSWIP_MDIO_PHYp(port),
- GSWIP_MDIO_PHY_LINK_MASK, mdio_phy);
-}
-
-static void gswip_port_set_speed(struct gswip_priv *priv, int port, int speed,
- phy_interface_t interface)
-{
- u32 mdio_phy = 0, mii_cfg = 0, mac_ctrl_0 = 0;
-
- switch (speed) {
- case SPEED_10:
- mdio_phy = GSWIP_MDIO_PHY_SPEED_M10;
-
- if (interface == PHY_INTERFACE_MODE_RMII)
- mii_cfg = GSWIP_MII_CFG_RATE_M50;
- else
- mii_cfg = GSWIP_MII_CFG_RATE_M2P5;
-
- mac_ctrl_0 = GSWIP_MAC_CTRL_0_GMII_MII;
- break;
-
- case SPEED_100:
- mdio_phy = GSWIP_MDIO_PHY_SPEED_M100;
-
- if (interface == PHY_INTERFACE_MODE_RMII)
- mii_cfg = GSWIP_MII_CFG_RATE_M50;
- else
- mii_cfg = GSWIP_MII_CFG_RATE_M25;
-
- mac_ctrl_0 = GSWIP_MAC_CTRL_0_GMII_MII;
- break;
-
- case SPEED_1000:
- mdio_phy = GSWIP_MDIO_PHY_SPEED_G1;
-
- mii_cfg = GSWIP_MII_CFG_RATE_M125;
-
- mac_ctrl_0 = GSWIP_MAC_CTRL_0_GMII_RGMII;
- break;
- }
-
- regmap_write_bits(priv->mdio, GSWIP_MDIO_PHYp(port),
- GSWIP_MDIO_PHY_SPEED_MASK, mdio_phy);
- gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_RATE_MASK, mii_cfg, port);
- regmap_write_bits(priv->gswip, GSWIP_MAC_CTRL_0p(port),
- GSWIP_MAC_CTRL_0_GMII_MASK, mac_ctrl_0);
-}
-
-static void gswip_port_set_duplex(struct gswip_priv *priv, int port, int duplex)
-{
- u32 mac_ctrl_0, mdio_phy;
-
- if (duplex == DUPLEX_FULL) {
- mac_ctrl_0 = GSWIP_MAC_CTRL_0_FDUP_EN;
- mdio_phy = GSWIP_MDIO_PHY_FDUP_EN;
- } else {
- mac_ctrl_0 = GSWIP_MAC_CTRL_0_FDUP_DIS;
- mdio_phy = GSWIP_MDIO_PHY_FDUP_DIS;
- }
-
- regmap_write_bits(priv->gswip, GSWIP_MAC_CTRL_0p(port),
- GSWIP_MAC_CTRL_0_FDUP_MASK, mac_ctrl_0);
- regmap_write_bits(priv->mdio, GSWIP_MDIO_PHYp(port),
- GSWIP_MDIO_PHY_FDUP_MASK, mdio_phy);
-}
-
-static void gswip_port_set_pause(struct gswip_priv *priv, int port,
- bool tx_pause, bool rx_pause)
-{
- u32 mac_ctrl_0, mdio_phy;
-
- if (tx_pause && rx_pause) {
- mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_RXTX;
- mdio_phy = GSWIP_MDIO_PHY_FCONTX_EN |
- GSWIP_MDIO_PHY_FCONRX_EN;
- } else if (tx_pause) {
- mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_TX;
- mdio_phy = GSWIP_MDIO_PHY_FCONTX_EN |
- GSWIP_MDIO_PHY_FCONRX_DIS;
- } else if (rx_pause) {
- mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_RX;
- mdio_phy = GSWIP_MDIO_PHY_FCONTX_DIS |
- GSWIP_MDIO_PHY_FCONRX_EN;
- } else {
- mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_NONE;
- mdio_phy = GSWIP_MDIO_PHY_FCONTX_DIS |
- GSWIP_MDIO_PHY_FCONRX_DIS;
- }
-
- regmap_write_bits(priv->gswip, GSWIP_MAC_CTRL_0p(port),
- GSWIP_MAC_CTRL_0_FCON_MASK, mac_ctrl_0);
- regmap_write_bits(priv->mdio, GSWIP_MDIO_PHYp(port),
- GSWIP_MDIO_PHY_FCONTX_MASK | GSWIP_MDIO_PHY_FCONRX_MASK,
- mdio_phy);
-}
-
-static void gswip_phylink_mac_config(struct phylink_config *config,
- unsigned int mode,
- const struct phylink_link_state *state)
-{
- struct dsa_port *dp = dsa_phylink_to_port(config);
- struct gswip_priv *priv = dp->ds->priv;
- int port = dp->index;
- u32 miicfg = 0;
-
- miicfg |= GSWIP_MII_CFG_LDCLKDIS;
-
- switch (state->interface) {
- case PHY_INTERFACE_MODE_SGMII:
- case PHY_INTERFACE_MODE_1000BASEX:
- case PHY_INTERFACE_MODE_2500BASEX:
- return;
- case PHY_INTERFACE_MODE_MII:
- case PHY_INTERFACE_MODE_INTERNAL:
- miicfg |= GSWIP_MII_CFG_MODE_MIIM;
- break;
- case PHY_INTERFACE_MODE_REVMII:
- miicfg |= GSWIP_MII_CFG_MODE_MIIP;
- break;
- case PHY_INTERFACE_MODE_RMII:
- miicfg |= GSWIP_MII_CFG_MODE_RMIIM;
- break;
- case PHY_INTERFACE_MODE_RGMII:
- case PHY_INTERFACE_MODE_RGMII_ID:
- case PHY_INTERFACE_MODE_RGMII_RXID:
- case PHY_INTERFACE_MODE_RGMII_TXID:
- miicfg |= GSWIP_MII_CFG_MODE_RGMII;
- break;
- case PHY_INTERFACE_MODE_GMII:
- miicfg |= GSWIP_MII_CFG_MODE_GMII;
- break;
- default:
- dev_err(dp->ds->dev,
- "Unsupported interface: %d\n", state->interface);
- return;
- }
-
- gswip_mii_mask_cfg(priv,
- GSWIP_MII_CFG_MODE_MASK | GSWIP_MII_CFG_RMII_CLK |
- GSWIP_MII_CFG_RGMII_IBS | GSWIP_MII_CFG_LDCLKDIS,
- miicfg, port);
-
- switch (state->interface) {
- case PHY_INTERFACE_MODE_RGMII_ID:
- gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_TXDLY_MASK |
- GSWIP_MII_PCDU_RXDLY_MASK, 0, port);
- break;
- case PHY_INTERFACE_MODE_RGMII_RXID:
- gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_RXDLY_MASK, 0, port);
- break;
- case PHY_INTERFACE_MODE_RGMII_TXID:
- gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_TXDLY_MASK, 0, port);
- break;
- default:
- break;
- }
-}
-
-static void gswip_phylink_mac_link_down(struct phylink_config *config,
- unsigned int mode,
- phy_interface_t interface)
-{
- struct dsa_port *dp = dsa_phylink_to_port(config);
- struct gswip_priv *priv = dp->ds->priv;
- int port = dp->index;
-
- gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_EN, 0, port);
-
- if (!dsa_port_is_cpu(dp))
- gswip_port_set_link(priv, port, false);
-}
-
-static void gswip_phylink_mac_link_up(struct phylink_config *config,
- struct phy_device *phydev,
- unsigned int mode,
- phy_interface_t interface,
- int speed, int duplex,
- bool tx_pause, bool rx_pause)
-{
- struct dsa_port *dp = dsa_phylink_to_port(config);
- struct gswip_priv *priv = dp->ds->priv;
- int port = dp->index;
-
- if (!dsa_port_is_cpu(dp)) {
- gswip_port_set_link(priv, port, true);
- gswip_port_set_speed(priv, port, speed, interface);
- gswip_port_set_duplex(priv, port, duplex);
- gswip_port_set_pause(priv, port, tx_pause, rx_pause);
- }
-
- gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_EN, GSWIP_MII_CFG_EN, port);
-}
-
-static void gswip_get_strings(struct dsa_switch *ds, int port, u32 stringset,
- uint8_t *data)
-{
- int i;
-
- if (stringset != ETH_SS_STATS)
- return;
-
- for (i = 0; i < ARRAY_SIZE(gswip_rmon_cnt); i++)
- ethtool_puts(&data, gswip_rmon_cnt[i].name);
-}
-
-static u32 gswip_bcm_ram_entry_read(struct gswip_priv *priv, u32 table,
- u32 index)
-{
- u32 result, val;
- int err;
-
- regmap_write(priv->gswip, GSWIP_BM_RAM_ADDR, index);
- regmap_write_bits(priv->gswip, GSWIP_BM_RAM_CTRL,
- GSWIP_BM_RAM_CTRL_ADDR_MASK | GSWIP_BM_RAM_CTRL_OPMOD |
- GSWIP_BM_RAM_CTRL_BAS,
- table | GSWIP_BM_RAM_CTRL_BAS);
-
- err = gswip_switch_r_timeout(priv, GSWIP_BM_RAM_CTRL,
- GSWIP_BM_RAM_CTRL_BAS);
- if (err) {
- dev_err(priv->dev, "timeout while reading table: %u, index: %u\n",
- table, index);
- return 0;
- }
-
- regmap_read(priv->gswip, GSWIP_BM_RAM_VAL(0), &result);
- regmap_read(priv->gswip, GSWIP_BM_RAM_VAL(1), &val);
- result |= val << 16;
-
- return result;
-}
-
-static void gswip_get_ethtool_stats(struct dsa_switch *ds, int port,
- uint64_t *data)
-{
- struct gswip_priv *priv = ds->priv;
- const struct gswip_rmon_cnt_desc *rmon_cnt;
- int i;
- u64 high;
-
- for (i = 0; i < ARRAY_SIZE(gswip_rmon_cnt); i++) {
- rmon_cnt = &gswip_rmon_cnt[i];
-
- data[i] = gswip_bcm_ram_entry_read(priv, port,
- rmon_cnt->offset);
- if (rmon_cnt->size == 2) {
- high = gswip_bcm_ram_entry_read(priv, port,
- rmon_cnt->offset + 1);
- data[i] |= high << 32;
- }
- }
-}
-
-static int gswip_get_sset_count(struct dsa_switch *ds, int port, int sset)
-{
- if (sset != ETH_SS_STATS)
- return 0;
-
- return ARRAY_SIZE(gswip_rmon_cnt);
-}
-
-static struct phylink_pcs *gswip_phylink_mac_select_pcs(struct phylink_config *config,
- phy_interface_t interface)
-{
- struct dsa_port *dp = dsa_phylink_to_port(config);
- struct gswip_priv *priv = dp->ds->priv;
-
- if (priv->hw_info->mac_select_pcs)
- return priv->hw_info->mac_select_pcs(config, interface);
-
- return NULL;
-}
-
-static const struct phylink_mac_ops gswip_phylink_mac_ops = {
- .mac_config = gswip_phylink_mac_config,
- .mac_link_down = gswip_phylink_mac_link_down,
- .mac_link_up = gswip_phylink_mac_link_up,
- .mac_select_pcs = gswip_phylink_mac_select_pcs,
-};
-
-static const struct dsa_switch_ops gswip_switch_ops = {
- .get_tag_protocol = gswip_get_tag_protocol,
- .setup = gswip_setup,
- .port_setup = gswip_port_setup,
- .port_enable = gswip_port_enable,
- .port_disable = gswip_port_disable,
- .port_bridge_join = gswip_port_bridge_join,
- .port_bridge_leave = gswip_port_bridge_leave,
- .port_fast_age = gswip_port_fast_age,
- .port_vlan_filtering = gswip_port_vlan_filtering,
- .port_vlan_add = gswip_port_vlan_add,
- .port_vlan_del = gswip_port_vlan_del,
- .port_stp_state_set = gswip_port_stp_state_set,
- .port_fdb_add = gswip_port_fdb_add,
- .port_fdb_del = gswip_port_fdb_del,
- .port_fdb_dump = gswip_port_fdb_dump,
- .port_change_mtu = gswip_port_change_mtu,
- .port_max_mtu = gswip_port_max_mtu,
- .phylink_get_caps = gswip_phylink_get_caps,
- .get_strings = gswip_get_strings,
- .get_ethtool_stats = gswip_get_ethtool_stats,
- .get_sset_count = gswip_get_sset_count,
-};
-
static const struct xway_gphy_match_data xrx200a1x_gphy_data = {
.fe_firmware_name = "lantiq/xrx200_phy22f_a14.bin",
.ge_firmware_name = "lantiq/xrx200_phy11g_a14.bin",
@@ -1832,30 +317,6 @@ static int gswip_gphy_fw_list(struct gswip_priv *priv,
return err;
}
-static int gswip_validate_cpu_port(struct dsa_switch *ds)
-{
- struct gswip_priv *priv = ds->priv;
- struct dsa_port *cpu_dp;
- int cpu_port = -1;
-
- dsa_switch_for_each_cpu_port(cpu_dp, ds) {
- if (cpu_port != -1)
- return dev_err_probe(ds->dev, -EINVAL,
- "only a single CPU port is supported\n");
-
- cpu_port = cpu_dp->index;
- }
-
- if (cpu_port == -1)
- return dev_err_probe(ds->dev, -EINVAL, "no CPU port defined\n");
-
- if (BIT(cpu_port) & ~priv->hw_info->allowed_cpu_ports)
- return dev_err_probe(ds->dev, -EINVAL,
- "unsupported CPU port defined\n");
-
- return 0;
-}
-
static const struct regmap_config sw_regmap_config = {
.name = "switch",
.reg_bits = 32,
@@ -1929,24 +390,9 @@ static int gswip_probe(struct platform_device *pdev)
if (!priv->ds)
return -ENOMEM;
- priv->ds->dev = dev;
- priv->ds->num_ports = priv->hw_info->max_ports;
- priv->ds->priv = priv;
- priv->ds->ops = &gswip_switch_ops;
- priv->ds->phylink_mac_ops = &gswip_phylink_mac_ops;
priv->dev = dev;
- mutex_init(&priv->pce_table_lock);
- regmap_read(priv->gswip, GSWIP_VERSION, &version);
- /* The hardware has the 'major/minor' version bytes in the wrong order
- * preventing numerical comparisons. Construct a 16-bit unsigned integer
- * having the REV field as most significant byte and the MOD field as
- * least significant byte. This is effectively swapping the two bytes of
- * the version variable, but other than using swab16 it doesn't affect
- * the source variable.
- */
- priv->version = GSWIP_VERSION_REV(version) << 8 |
- GSWIP_VERSION_MOD(version);
+ regmap_read(priv->gswip, GSWIP_VERSION, &version);
np = dev->of_node;
switch (version) {
@@ -1976,25 +422,14 @@ static int gswip_probe(struct platform_device *pdev)
"gphy fw probe failed\n");
}
- err = dsa_register_switch(priv->ds);
- if (err) {
- dev_err_probe(dev, err, "dsa switch registration failed\n");
- goto gphy_fw_remove;
- }
-
- err = gswip_validate_cpu_port(priv->ds);
+ err = gswip_probe_common(priv, version);
if (err)
- goto disable_switch;
+ goto gphy_fw_remove;
platform_set_drvdata(pdev, priv);
- dev_info(dev, "probed GSWIP version %lx mod %lx\n",
- GSWIP_VERSION_REV(version), GSWIP_VERSION_MOD(version));
return 0;
-disable_switch:
- regmap_clear_bits(priv->mdio, GSWIP_MDIO_GLOB, GSWIP_MDIO_GLOB_ENABLE);
- dsa_unregister_switch(priv->ds);
gphy_fw_remove:
for (i = 0; i < priv->num_gphy_fw; i++)
gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]);
@@ -2010,7 +445,7 @@ static void gswip_remove(struct platform_device *pdev)
return;
/* disable the switch */
- regmap_clear_bits(priv->mdio, GSWIP_MDIO_GLOB, GSWIP_MDIO_GLOB_ENABLE);
+ gswip_disable_switch(priv);
dsa_unregister_switch(priv->ds);
diff --git a/drivers/net/dsa/lantiq/lantiq_gswip.h b/drivers/net/dsa/lantiq/lantiq_gswip.h
index 24d759e06e15..d86290db19b4 100644
--- a/drivers/net/dsa/lantiq/lantiq_gswip.h
+++ b/drivers/net/dsa/lantiq/lantiq_gswip.h
@@ -278,4 +278,8 @@ struct gswip_priv {
u16 version;
};
+void gswip_disable_switch(struct gswip_priv *priv);
+
+int gswip_probe_common(struct gswip_priv *priv, u32 version);
+
#endif /* __LANTIQ_GSWIP_H */
diff --git a/drivers/net/dsa/lantiq/lantiq_gswip_common.c b/drivers/net/dsa/lantiq/lantiq_gswip_common.c
new file mode 100644
index 000000000000..a0e361622acb
--- /dev/null
+++ b/drivers/net/dsa/lantiq/lantiq_gswip_common.c
@@ -0,0 +1,1622 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Lantiq / Intel / MaxLinear GSWIP common function library
+ *
+ * Copyright (C) 2025 Daniel Golle <daniel@...rotopia.org>
+ * Copyright (C) 2023 - 2024 MaxLinear Inc.
+ * Copyright (C) 2022 Snap One, LLC. All rights reserved.
+ * Copyright (C) 2017 - 2019 Hauke Mehrtens <hauke@...ke-m.de>
+ * Copyright (C) 2012 John Crispin <john@...ozen.org>
+ * Copyright (C) 2010 Lantiq Deutschland
+ *
+ * The VLAN and bridge model the GSWIP hardware uses does not directly
+ * matches the model DSA uses.
+ *
+ * The hardware has 64 possible table entries for bridges with one VLAN
+ * ID, one flow id and a list of ports for each bridge. All entries which
+ * match the same flow ID are combined in the mac learning table, they
+ * act as one global bridge.
+ * The hardware does not support VLAN filter on the port, but on the
+ * bridge, this driver converts the DSA model to the hardware.
+ *
+ * The CPU gets all the exception frames which do not match any forwarding
+ * rule and the CPU port is also added to all bridges. This makes it possible
+ * to handle all the special cases easily in software.
+ * At the initialization the driver allocates one bridge table entry for
+ * each switch port which is used when the port is used without an
+ * explicit bridge. This prevents the frames from being forwarded
+ * between all LAN ports by default.
+ */
+
+#include "lantiq_gswip.h"
+
+#include <linux/delay.h>
+#include <linux/etherdevice.h>
+#include <linux/if_bridge.h>
+#include <linux/if_vlan.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/of_mdio.h>
+#include <linux/of_net.h>
+#include <linux/phy.h>
+#include <linux/phylink.h>
+#include <linux/regmap.h>
+#include <net/dsa.h>
+
+struct gswip_pce_table_entry {
+ u16 index; // PCE_TBL_ADDR.ADDR = pData->table_index
+ u16 table; // PCE_TBL_CTRL.ADDR = pData->table
+ u16 key[8];
+ u16 val[5];
+ u16 mask;
+ u8 gmap;
+ bool type;
+ bool valid;
+ bool key_mode;
+};
+
+struct gswip_rmon_cnt_desc {
+ unsigned int size;
+ unsigned int offset;
+ const char *name;
+};
+
+#define MIB_DESC(_size, _offset, _name) {.size = _size, .offset = _offset, .name = _name}
+
+static const struct gswip_rmon_cnt_desc gswip_rmon_cnt[] = {
+ /** Receive Packet Count (only packets that are accepted and not discarded). */
+ MIB_DESC(1, 0x1F, "RxGoodPkts"),
+ MIB_DESC(1, 0x23, "RxUnicastPkts"),
+ MIB_DESC(1, 0x22, "RxMulticastPkts"),
+ MIB_DESC(1, 0x21, "RxFCSErrorPkts"),
+ MIB_DESC(1, 0x1D, "RxUnderSizeGoodPkts"),
+ MIB_DESC(1, 0x1E, "RxUnderSizeErrorPkts"),
+ MIB_DESC(1, 0x1B, "RxOversizeGoodPkts"),
+ MIB_DESC(1, 0x1C, "RxOversizeErrorPkts"),
+ MIB_DESC(1, 0x20, "RxGoodPausePkts"),
+ MIB_DESC(1, 0x1A, "RxAlignErrorPkts"),
+ MIB_DESC(1, 0x12, "Rx64BytePkts"),
+ MIB_DESC(1, 0x13, "Rx127BytePkts"),
+ MIB_DESC(1, 0x14, "Rx255BytePkts"),
+ MIB_DESC(1, 0x15, "Rx511BytePkts"),
+ MIB_DESC(1, 0x16, "Rx1023BytePkts"),
+ /** Receive Size 1024-1522 (or more, if configured) Packet Count. */
+ MIB_DESC(1, 0x17, "RxMaxBytePkts"),
+ MIB_DESC(1, 0x18, "RxDroppedPkts"),
+ MIB_DESC(1, 0x19, "RxFilteredPkts"),
+ MIB_DESC(2, 0x24, "RxGoodBytes"),
+ MIB_DESC(2, 0x26, "RxBadBytes"),
+ MIB_DESC(1, 0x11, "TxAcmDroppedPkts"),
+ MIB_DESC(1, 0x0C, "TxGoodPkts"),
+ MIB_DESC(1, 0x06, "TxUnicastPkts"),
+ MIB_DESC(1, 0x07, "TxMulticastPkts"),
+ MIB_DESC(1, 0x00, "Tx64BytePkts"),
+ MIB_DESC(1, 0x01, "Tx127BytePkts"),
+ MIB_DESC(1, 0x02, "Tx255BytePkts"),
+ MIB_DESC(1, 0x03, "Tx511BytePkts"),
+ MIB_DESC(1, 0x04, "Tx1023BytePkts"),
+ /** Transmit Size 1024-1522 (or more, if configured) Packet Count. */
+ MIB_DESC(1, 0x05, "TxMaxBytePkts"),
+ MIB_DESC(1, 0x08, "TxSingleCollCount"),
+ MIB_DESC(1, 0x09, "TxMultCollCount"),
+ MIB_DESC(1, 0x0A, "TxLateCollCount"),
+ MIB_DESC(1, 0x0B, "TxExcessCollCount"),
+ MIB_DESC(1, 0x0D, "TxPauseCount"),
+ MIB_DESC(1, 0x10, "TxDroppedPkts"),
+ MIB_DESC(2, 0x0E, "TxGoodBytes"),
+};
+
+static u32 gswip_switch_r_timeout(struct gswip_priv *priv, u32 offset,
+ u32 cleared)
+{
+ u32 val;
+
+ return regmap_read_poll_timeout(priv->gswip, offset, val,
+ !(val & cleared), 20, 50000);
+}
+
+static void gswip_mii_mask_cfg(struct gswip_priv *priv, u32 mask, u32 set,
+ int port)
+{
+ int reg_port;
+
+ /* MII_CFG register only exists for MII ports */
+ if (!(priv->hw_info->mii_ports & BIT(port)))
+ return;
+
+ reg_port = port + priv->hw_info->mii_port_reg_offset;
+
+ regmap_write_bits(priv->mii, GSWIP_MII_CFGp(reg_port), mask,
+ set);
+}
+
+static void gswip_mii_mask_pcdu(struct gswip_priv *priv, u32 mask, u32 set,
+ int port)
+{
+ int reg_port;
+
+ /* MII_PCDU register only exists for MII ports */
+ if (!(priv->hw_info->mii_ports & BIT(port)))
+ return;
+
+ reg_port = port + priv->hw_info->mii_port_reg_offset;
+
+ switch (reg_port) {
+ case 0:
+ regmap_write_bits(priv->mii, GSWIP_MII_PCDU0, mask, set);
+ break;
+ case 1:
+ regmap_write_bits(priv->mii, GSWIP_MII_PCDU1, mask, set);
+ break;
+ case 5:
+ regmap_write_bits(priv->mii, GSWIP_MII_PCDU5, mask, set);
+ break;
+ }
+}
+
+static int gswip_mdio_poll(struct gswip_priv *priv)
+{
+ u32 ctrl;
+
+ return regmap_read_poll_timeout(priv->mdio, GSWIP_MDIO_CTRL, ctrl,
+ !(ctrl & GSWIP_MDIO_CTRL_BUSY), 40, 4000);
+}
+
+static int gswip_mdio_wr(struct mii_bus *bus, int addr, int reg, u16 val)
+{
+ struct gswip_priv *priv = bus->priv;
+ int err;
+
+ err = gswip_mdio_poll(priv);
+ if (err) {
+ dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
+ return err;
+ }
+
+ regmap_write(priv->mdio, GSWIP_MDIO_WRITE, val);
+ regmap_write(priv->mdio, GSWIP_MDIO_CTRL,
+ GSWIP_MDIO_CTRL_BUSY | GSWIP_MDIO_CTRL_WR |
+ ((addr & GSWIP_MDIO_CTRL_PHYAD_MASK) << GSWIP_MDIO_CTRL_PHYAD_SHIFT) |
+ (reg & GSWIP_MDIO_CTRL_REGAD_MASK));
+
+ return 0;
+}
+
+static int gswip_mdio_rd(struct mii_bus *bus, int addr, int reg)
+{
+ struct gswip_priv *priv = bus->priv;
+ u32 val;
+ int err;
+
+ err = gswip_mdio_poll(priv);
+ if (err) {
+ dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
+ return err;
+ }
+
+ regmap_write(priv->mdio, GSWIP_MDIO_CTRL,
+ GSWIP_MDIO_CTRL_BUSY | GSWIP_MDIO_CTRL_RD |
+ ((addr & GSWIP_MDIO_CTRL_PHYAD_MASK) << GSWIP_MDIO_CTRL_PHYAD_SHIFT) |
+ (reg & GSWIP_MDIO_CTRL_REGAD_MASK));
+
+ err = gswip_mdio_poll(priv);
+ if (err) {
+ dev_err(&bus->dev, "waiting for MDIO bus busy timed out\n");
+ return err;
+ }
+
+ err = regmap_read(priv->mdio, GSWIP_MDIO_READ, &val);
+ if (err)
+ return err;
+
+ return val;
+}
+
+static int gswip_mdio(struct gswip_priv *priv)
+{
+ struct device_node *mdio_np, *switch_np = priv->dev->of_node;
+ struct device *dev = priv->dev;
+ struct mii_bus *bus;
+ int err = 0;
+
+ mdio_np = of_get_compatible_child(switch_np, "lantiq,xrx200-mdio");
+ if (!mdio_np)
+ mdio_np = of_get_child_by_name(switch_np, "mdio");
+
+ if (!of_device_is_available(mdio_np))
+ goto out_put_node;
+
+ bus = devm_mdiobus_alloc(dev);
+ if (!bus) {
+ err = -ENOMEM;
+ goto out_put_node;
+ }
+
+ bus->priv = priv;
+ bus->read = gswip_mdio_rd;
+ bus->write = gswip_mdio_wr;
+ bus->name = "lantiq,xrx200-mdio";
+ snprintf(bus->id, MII_BUS_ID_SIZE, "%s-mii", dev_name(priv->dev));
+ bus->parent = priv->dev;
+
+ err = devm_of_mdiobus_register(dev, bus, mdio_np);
+
+out_put_node:
+ of_node_put(mdio_np);
+
+ return err;
+}
+
+static int gswip_pce_table_entry_read(struct gswip_priv *priv,
+ struct gswip_pce_table_entry *tbl)
+{
+ int i;
+ int err;
+ u32 crtl;
+ u32 tmp;
+ u16 addr_mode = tbl->key_mode ? GSWIP_PCE_TBL_CTRL_OPMOD_KSRD :
+ GSWIP_PCE_TBL_CTRL_OPMOD_ADRD;
+
+ mutex_lock(&priv->pce_table_lock);
+
+ err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
+ GSWIP_PCE_TBL_CTRL_BAS);
+ if (err)
+ goto out_unlock;
+
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_ADDR, tbl->index);
+ regmap_write_bits(priv->gswip, GSWIP_PCE_TBL_CTRL,
+ GSWIP_PCE_TBL_CTRL_ADDR_MASK |
+ GSWIP_PCE_TBL_CTRL_OPMOD_MASK |
+ GSWIP_PCE_TBL_CTRL_BAS,
+ tbl->table | addr_mode | GSWIP_PCE_TBL_CTRL_BAS);
+
+ err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
+ GSWIP_PCE_TBL_CTRL_BAS);
+ if (err)
+ goto out_unlock;
+
+ for (i = 0; i < ARRAY_SIZE(tbl->key); i++) {
+ err = regmap_read(priv->gswip, GSWIP_PCE_TBL_KEY(i), &tmp);
+ if (err)
+ goto out_unlock;
+ tbl->key[i] = tmp;
+ }
+ for (i = 0; i < ARRAY_SIZE(tbl->val); i++) {
+ err = regmap_read(priv->gswip, GSWIP_PCE_TBL_VAL(i), &tmp);
+ if (err)
+ goto out_unlock;
+ tbl->val[i] = tmp;
+ }
+
+ err = regmap_read(priv->gswip, GSWIP_PCE_TBL_MASK, &tmp);
+ if (err)
+ goto out_unlock;
+
+ tbl->mask = tmp;
+ err = regmap_read(priv->gswip, GSWIP_PCE_TBL_CTRL, &crtl);
+ if (err)
+ goto out_unlock;
+
+ tbl->type = !!(crtl & GSWIP_PCE_TBL_CTRL_TYPE);
+ tbl->valid = !!(crtl & GSWIP_PCE_TBL_CTRL_VLD);
+ tbl->gmap = (crtl & GSWIP_PCE_TBL_CTRL_GMAP_MASK) >> 7;
+
+out_unlock:
+ mutex_unlock(&priv->pce_table_lock);
+
+ return err;
+}
+
+static int gswip_pce_table_entry_write(struct gswip_priv *priv,
+ struct gswip_pce_table_entry *tbl)
+{
+ int i;
+ int err;
+ u32 crtl;
+ u16 addr_mode = tbl->key_mode ? GSWIP_PCE_TBL_CTRL_OPMOD_KSWR :
+ GSWIP_PCE_TBL_CTRL_OPMOD_ADWR;
+
+ mutex_lock(&priv->pce_table_lock);
+
+ err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
+ GSWIP_PCE_TBL_CTRL_BAS);
+ if (err) {
+ mutex_unlock(&priv->pce_table_lock);
+ return err;
+ }
+
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_ADDR, tbl->index);
+ regmap_write_bits(priv->gswip, GSWIP_PCE_TBL_CTRL,
+ GSWIP_PCE_TBL_CTRL_ADDR_MASK |
+ GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
+ tbl->table | addr_mode);
+
+ for (i = 0; i < ARRAY_SIZE(tbl->key); i++)
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_KEY(i), tbl->key[i]);
+
+ for (i = 0; i < ARRAY_SIZE(tbl->val); i++)
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_VAL(i), tbl->val[i]);
+
+ regmap_write_bits(priv->gswip, GSWIP_PCE_TBL_CTRL,
+ GSWIP_PCE_TBL_CTRL_ADDR_MASK |
+ GSWIP_PCE_TBL_CTRL_OPMOD_MASK,
+ tbl->table | addr_mode);
+
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_MASK, tbl->mask);
+
+ regmap_read(priv->gswip, GSWIP_PCE_TBL_CTRL, &crtl);
+ crtl &= ~(GSWIP_PCE_TBL_CTRL_TYPE | GSWIP_PCE_TBL_CTRL_VLD |
+ GSWIP_PCE_TBL_CTRL_GMAP_MASK);
+ if (tbl->type)
+ crtl |= GSWIP_PCE_TBL_CTRL_TYPE;
+ if (tbl->valid)
+ crtl |= GSWIP_PCE_TBL_CTRL_VLD;
+ crtl |= (tbl->gmap << 7) & GSWIP_PCE_TBL_CTRL_GMAP_MASK;
+ crtl |= GSWIP_PCE_TBL_CTRL_BAS;
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_CTRL, crtl);
+
+ err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
+ GSWIP_PCE_TBL_CTRL_BAS);
+
+ mutex_unlock(&priv->pce_table_lock);
+
+ return err;
+}
+
+/* Add the LAN port into a bridge with the CPU port by
+ * default. This prevents automatic forwarding of
+ * packages between the LAN ports when no explicit
+ * bridge is configured.
+ */
+static int gswip_add_single_port_br(struct gswip_priv *priv, int port, bool add)
+{
+ struct gswip_pce_table_entry vlan_active = {0,};
+ struct gswip_pce_table_entry vlan_mapping = {0,};
+ int err;
+
+ vlan_active.index = port + 1;
+ vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
+ vlan_active.key[0] = GSWIP_VLAN_UNAWARE_PVID;
+ vlan_active.val[0] = port + 1 /* fid */;
+ vlan_active.valid = add;
+ err = gswip_pce_table_entry_write(priv, &vlan_active);
+ if (err) {
+ dev_err(priv->dev, "failed to write active VLAN: %d\n", err);
+ return err;
+ }
+
+ if (!add)
+ return 0;
+
+ vlan_mapping.index = port + 1;
+ vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
+ vlan_mapping.val[0] = GSWIP_VLAN_UNAWARE_PVID;
+ vlan_mapping.val[1] = BIT(port) | dsa_cpu_ports(priv->ds);
+ vlan_mapping.val[2] = 0;
+ err = gswip_pce_table_entry_write(priv, &vlan_mapping);
+ if (err) {
+ dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+static int gswip_port_setup(struct dsa_switch *ds, int port)
+{
+ struct gswip_priv *priv = ds->priv;
+ int err;
+
+ if (!dsa_is_cpu_port(ds, port)) {
+ err = gswip_add_single_port_br(priv, port, true);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int gswip_port_enable(struct dsa_switch *ds, int port,
+ struct phy_device *phydev)
+{
+ struct gswip_priv *priv = ds->priv;
+
+ if (!dsa_is_cpu_port(ds, port)) {
+ u32 mdio_phy = 0;
+
+ if (phydev)
+ mdio_phy = phydev->mdio.addr & GSWIP_MDIO_PHY_ADDR_MASK;
+
+ regmap_write_bits(priv->mdio, GSWIP_MDIO_PHYp(port),
+ GSWIP_MDIO_PHY_ADDR_MASK,
+ mdio_phy);
+ }
+
+ /* RMON Counter Enable for port */
+ regmap_write(priv->gswip, GSWIP_BM_PCFGp(port), GSWIP_BM_PCFG_CNTEN);
+
+ /* enable port fetch/store dma & VLAN Modification */
+ regmap_set_bits(priv->gswip, GSWIP_FDMA_PCTRLp(port),
+ GSWIP_FDMA_PCTRL_EN | GSWIP_FDMA_PCTRL_VLANMOD_BOTH);
+ regmap_set_bits(priv->gswip, GSWIP_SDMA_PCTRLp(port),
+ GSWIP_SDMA_PCTRL_EN);
+
+ return 0;
+}
+
+static void gswip_port_disable(struct dsa_switch *ds, int port)
+{
+ struct gswip_priv *priv = ds->priv;
+
+ regmap_clear_bits(priv->gswip, GSWIP_FDMA_PCTRLp(port),
+ GSWIP_FDMA_PCTRL_EN);
+ regmap_clear_bits(priv->gswip, GSWIP_SDMA_PCTRLp(port),
+ GSWIP_SDMA_PCTRL_EN);
+}
+
+static int gswip_pce_load_microcode(struct gswip_priv *priv)
+{
+ int i;
+ int err;
+
+ regmap_write_bits(priv->gswip, GSWIP_PCE_TBL_CTRL,
+ GSWIP_PCE_TBL_CTRL_ADDR_MASK |
+ GSWIP_PCE_TBL_CTRL_OPMOD_MASK |
+ GSWIP_PCE_TBL_CTRL_OPMOD_ADWR,
+ GSWIP_PCE_TBL_CTRL_OPMOD_ADWR);
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_MASK, 0);
+
+ for (i = 0; i < priv->hw_info->pce_microcode_size; i++) {
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_ADDR, i);
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_VAL(0),
+ (*priv->hw_info->pce_microcode)[i].val_0);
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_VAL(1),
+ (*priv->hw_info->pce_microcode)[i].val_1);
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_VAL(2),
+ (*priv->hw_info->pce_microcode)[i].val_2);
+ regmap_write(priv->gswip, GSWIP_PCE_TBL_VAL(3),
+ (*priv->hw_info->pce_microcode)[i].val_3);
+
+ /* start the table access: */
+ regmap_set_bits(priv->gswip, GSWIP_PCE_TBL_CTRL,
+ GSWIP_PCE_TBL_CTRL_BAS);
+ err = gswip_switch_r_timeout(priv, GSWIP_PCE_TBL_CTRL,
+ GSWIP_PCE_TBL_CTRL_BAS);
+ if (err)
+ return err;
+ }
+
+ /* tell the switch that the microcode is loaded */
+ regmap_set_bits(priv->gswip, GSWIP_PCE_GCTRL_0,
+ GSWIP_PCE_GCTRL_0_MC_VALID);
+
+ return 0;
+}
+
+static void gswip_port_commit_pvid(struct gswip_priv *priv, int port)
+{
+ struct dsa_port *dp = dsa_to_port(priv->ds, port);
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
+ u32 vinr;
+ int idx;
+
+ if (!dsa_port_is_user(dp))
+ return;
+
+ if (br) {
+ u16 pvid = GSWIP_VLAN_UNAWARE_PVID;
+
+ if (br_vlan_enabled(br))
+ br_vlan_get_pvid(br, &pvid);
+
+ /* VLAN-aware bridge ports with no PVID will use Active VLAN
+ * index 0. The expectation is that this drops all untagged and
+ * VID-0 tagged ingress traffic.
+ */
+ idx = 0;
+ for (int i = priv->hw_info->max_ports;
+ i < ARRAY_SIZE(priv->vlans); i++) {
+ if (priv->vlans[i].bridge == br &&
+ priv->vlans[i].vid == pvid) {
+ idx = i;
+ break;
+ }
+ }
+ } else {
+ /* The Active VLAN table index as configured by
+ * gswip_add_single_port_br()
+ */
+ idx = port + 1;
+ }
+
+ vinr = idx ? GSWIP_PCE_VCTRL_VINR_ALL : GSWIP_PCE_VCTRL_VINR_TAGGED;
+ regmap_write_bits(priv->gswip, GSWIP_PCE_VCTRL(port),
+ GSWIP_PCE_VCTRL_VINR,
+ FIELD_PREP(GSWIP_PCE_VCTRL_VINR, vinr));
+
+ /* Note that in GSWIP 2.2 VLAN mode the VID needs to be programmed
+ * directly instead of referencing the index in the Active VLAN Tablet.
+ * However, without the VLANMD bit (9) in PCE_GCTRL_1 (0x457) even
+ * GSWIP 2.2 and newer hardware maintain the GSWIP 2.1 behavior.
+ */
+ regmap_write(priv->gswip, GSWIP_PCE_DEFPVID(port), idx);
+}
+
+static int gswip_port_vlan_filtering(struct dsa_switch *ds, int port,
+ bool vlan_filtering,
+ struct netlink_ext_ack *extack)
+{
+ struct gswip_priv *priv = ds->priv;
+
+ if (vlan_filtering) {
+ /* Use tag based VLAN */
+ regmap_write_bits(priv->gswip, GSWIP_PCE_VCTRL(port),
+ GSWIP_PCE_VCTRL_VSR |
+ GSWIP_PCE_VCTRL_UVR |
+ GSWIP_PCE_VCTRL_VIMR |
+ GSWIP_PCE_VCTRL_VEMR |
+ GSWIP_PCE_VCTRL_VID0,
+ GSWIP_PCE_VCTRL_UVR |
+ GSWIP_PCE_VCTRL_VIMR |
+ GSWIP_PCE_VCTRL_VEMR |
+ GSWIP_PCE_VCTRL_VID0);
+ regmap_clear_bits(priv->gswip, GSWIP_PCE_PCTRL_0p(port),
+ GSWIP_PCE_PCTRL_0_TVM);
+ } else {
+ /* Use port based VLAN */
+ regmap_write_bits(priv->gswip, GSWIP_PCE_VCTRL(port),
+ GSWIP_PCE_VCTRL_UVR |
+ GSWIP_PCE_VCTRL_VIMR |
+ GSWIP_PCE_VCTRL_VEMR |
+ GSWIP_PCE_VCTRL_VID0 |
+ GSWIP_PCE_VCTRL_VSR,
+ GSWIP_PCE_VCTRL_VSR);
+ regmap_set_bits(priv->gswip, GSWIP_PCE_PCTRL_0p(port),
+ GSWIP_PCE_PCTRL_0_TVM);
+ }
+
+ gswip_port_commit_pvid(priv, port);
+
+ return 0;
+}
+
+static int gswip_setup(struct dsa_switch *ds)
+{
+ unsigned int cpu_ports = dsa_cpu_ports(ds);
+ struct gswip_priv *priv = ds->priv;
+ struct dsa_port *cpu_dp;
+ int err, i;
+
+ regmap_write(priv->gswip, GSWIP_SWRES, GSWIP_SWRES_R0);
+ usleep_range(5000, 10000);
+ regmap_write(priv->gswip, GSWIP_SWRES, 0);
+
+ /* disable port fetch/store dma on all ports */
+ for (i = 0; i < priv->hw_info->max_ports; i++) {
+ gswip_port_disable(ds, i);
+ gswip_port_vlan_filtering(ds, i, false, NULL);
+ }
+
+ /* enable Switch */
+ regmap_set_bits(priv->mdio, GSWIP_MDIO_GLOB, GSWIP_MDIO_GLOB_ENABLE);
+
+ err = gswip_pce_load_microcode(priv);
+ if (err) {
+ dev_err(priv->dev, "writing PCE microcode failed, %i\n", err);
+ return err;
+ }
+
+ /* Default unknown Broadcast/Multicast/Unicast port maps */
+ regmap_write(priv->gswip, GSWIP_PCE_PMAP1, cpu_ports);
+ regmap_write(priv->gswip, GSWIP_PCE_PMAP2, cpu_ports);
+ regmap_write(priv->gswip, GSWIP_PCE_PMAP3, cpu_ports);
+
+ /* Deactivate MDIO PHY auto polling. Some PHYs as the AR8030 have an
+ * interoperability problem with this auto polling mechanism because
+ * their status registers think that the link is in a different state
+ * than it actually is. For the AR8030 it has the BMSR_ESTATEN bit set
+ * as well as ESTATUS_1000_TFULL and ESTATUS_1000_XFULL. This makes the
+ * auto polling state machine consider the link being negotiated with
+ * 1Gbit/s. Since the PHY itself is a Fast Ethernet RMII PHY this leads
+ * to the switch port being completely dead (RX and TX are both not
+ * working).
+ * Also with various other PHY / port combinations (PHY11G GPHY, PHY22F
+ * GPHY, external RGMII PEF7071/7072) any traffic would stop. Sometimes
+ * it would work fine for a few minutes to hours and then stop, on
+ * other device it would no traffic could be sent or received at all.
+ * Testing shows that when PHY auto polling is disabled these problems
+ * go away.
+ */
+ regmap_write(priv->mdio, GSWIP_MDIO_MDC_CFG0, 0x0);
+
+ /* Configure the MDIO Clock 2.5 MHz */
+ regmap_write_bits(priv->mdio, GSWIP_MDIO_MDC_CFG1, 0xff, 0x09);
+
+ /* bring up the mdio bus */
+ err = gswip_mdio(priv);
+ if (err) {
+ dev_err(priv->dev, "mdio bus setup failed\n");
+ return err;
+ }
+
+ /* Disable the xMII interface and clear it's isolation bit */
+ for (i = 0; i < priv->hw_info->max_ports; i++)
+ gswip_mii_mask_cfg(priv,
+ GSWIP_MII_CFG_EN | GSWIP_MII_CFG_ISOLATE,
+ 0, i);
+
+ dsa_switch_for_each_cpu_port(cpu_dp, ds) {
+ /* enable special tag insertion on cpu port */
+ regmap_set_bits(priv->gswip, GSWIP_FDMA_PCTRLp(cpu_dp->index),
+ GSWIP_FDMA_PCTRL_STEN);
+
+ /* accept special tag in ingress direction */
+ regmap_set_bits(priv->gswip,
+ GSWIP_PCE_PCTRL_0p(cpu_dp->index),
+ GSWIP_PCE_PCTRL_0_INGRESS);
+ }
+
+ regmap_set_bits(priv->gswip, GSWIP_BM_QUEUE_GCTRL,
+ GSWIP_BM_QUEUE_GCTRL_GL_MOD);
+
+ /* VLAN aware Switching */
+ regmap_set_bits(priv->gswip, GSWIP_PCE_GCTRL_0,
+ GSWIP_PCE_GCTRL_0_VLAN);
+
+ /* Flush MAC Table */
+ regmap_set_bits(priv->gswip, GSWIP_PCE_GCTRL_0,
+ GSWIP_PCE_GCTRL_0_MTFL);
+
+ err = gswip_switch_r_timeout(priv, GSWIP_PCE_GCTRL_0,
+ GSWIP_PCE_GCTRL_0_MTFL);
+ if (err) {
+ dev_err(priv->dev, "MAC flushing didn't finish\n");
+ return err;
+ }
+
+ ds->mtu_enforcement_ingress = true;
+
+ return 0;
+}
+
+static enum dsa_tag_protocol gswip_get_tag_protocol(struct dsa_switch *ds,
+ int port,
+ enum dsa_tag_protocol mp)
+{
+ struct gswip_priv *priv = ds->priv;
+
+ return priv->hw_info->tag_protocol;
+}
+
+static int gswip_vlan_active_create(struct gswip_priv *priv,
+ struct net_device *bridge,
+ int fid, u16 vid)
+{
+ struct gswip_pce_table_entry vlan_active = {0,};
+ unsigned int max_ports = priv->hw_info->max_ports;
+ int idx = -1;
+ int err;
+ int i;
+
+ /* Look for a free slot */
+ for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
+ if (!priv->vlans[i].bridge) {
+ idx = i;
+ break;
+ }
+ }
+
+ if (idx == -1)
+ return -ENOSPC;
+
+ if (fid == -1)
+ fid = idx;
+
+ vlan_active.index = idx;
+ vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
+ vlan_active.key[0] = vid;
+ vlan_active.val[0] = fid;
+ vlan_active.valid = true;
+
+ err = gswip_pce_table_entry_write(priv, &vlan_active);
+ if (err) {
+ dev_err(priv->dev, "failed to write active VLAN: %d\n", err);
+ return err;
+ }
+
+ priv->vlans[idx].bridge = bridge;
+ priv->vlans[idx].vid = vid;
+ priv->vlans[idx].fid = fid;
+
+ return idx;
+}
+
+static int gswip_vlan_active_remove(struct gswip_priv *priv, int idx)
+{
+ struct gswip_pce_table_entry vlan_active = {0,};
+ int err;
+
+ vlan_active.index = idx;
+ vlan_active.table = GSWIP_TABLE_ACTIVE_VLAN;
+ vlan_active.valid = false;
+ err = gswip_pce_table_entry_write(priv, &vlan_active);
+ if (err)
+ dev_err(priv->dev, "failed to delete active VLAN: %d\n", err);
+ priv->vlans[idx].bridge = NULL;
+
+ return err;
+}
+
+static int gswip_vlan_add(struct gswip_priv *priv, struct net_device *bridge,
+ int port, u16 vid, bool untagged, bool pvid,
+ bool vlan_aware)
+{
+ struct gswip_pce_table_entry vlan_mapping = {0,};
+ unsigned int max_ports = priv->hw_info->max_ports;
+ unsigned int cpu_ports = dsa_cpu_ports(priv->ds);
+ bool active_vlan_created = false;
+ int fid = -1, idx = -1;
+ int i, err;
+
+ /* Check if there is already a page for this bridge */
+ for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
+ if (priv->vlans[i].bridge == bridge) {
+ if (vlan_aware) {
+ if (fid != -1 && fid != priv->vlans[i].fid)
+ dev_err(priv->dev, "one bridge with multiple flow ids\n");
+ fid = priv->vlans[i].fid;
+ }
+ if (priv->vlans[i].vid == vid) {
+ idx = i;
+ break;
+ }
+ }
+ }
+
+ /* If this bridge is not programmed yet, add a Active VLAN table
+ * entry in a free slot and prepare the VLAN mapping table entry.
+ */
+ if (idx == -1) {
+ idx = gswip_vlan_active_create(priv, bridge, fid, vid);
+ if (idx < 0)
+ return idx;
+ active_vlan_created = true;
+
+ vlan_mapping.index = idx;
+ vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
+ } else {
+ /* Read the existing VLAN mapping entry from the switch */
+ vlan_mapping.index = idx;
+ vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
+ err = gswip_pce_table_entry_read(priv, &vlan_mapping);
+ if (err) {
+ dev_err(priv->dev, "failed to read VLAN mapping: %d\n",
+ err);
+ return err;
+ }
+ }
+
+ /* VLAN ID byte, maps to the VLAN ID of vlan active table */
+ vlan_mapping.val[0] = vid;
+ /* Update the VLAN mapping entry and write it to the switch */
+ vlan_mapping.val[1] |= cpu_ports;
+ vlan_mapping.val[1] |= BIT(port);
+ if (vlan_aware)
+ vlan_mapping.val[2] |= cpu_ports;
+ if (untagged)
+ vlan_mapping.val[2] &= ~BIT(port);
+ else
+ vlan_mapping.val[2] |= BIT(port);
+ err = gswip_pce_table_entry_write(priv, &vlan_mapping);
+ if (err) {
+ dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
+ /* In case an Active VLAN was creaetd delete it again */
+ if (active_vlan_created)
+ gswip_vlan_active_remove(priv, idx);
+ return err;
+ }
+
+ gswip_port_commit_pvid(priv, port);
+
+ return 0;
+}
+
+static int gswip_vlan_remove(struct gswip_priv *priv,
+ struct net_device *bridge, int port,
+ u16 vid)
+{
+ struct gswip_pce_table_entry vlan_mapping = {0,};
+ unsigned int max_ports = priv->hw_info->max_ports;
+ int idx = -1;
+ int i;
+ int err;
+
+ /* Check if there is already a page for this bridge */
+ for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
+ if (priv->vlans[i].bridge == bridge &&
+ priv->vlans[i].vid == vid) {
+ idx = i;
+ break;
+ }
+ }
+
+ if (idx == -1) {
+ dev_err(priv->dev, "Port %d cannot find VID %u of bridge %s\n",
+ port, vid, bridge ? bridge->name : "(null)");
+ return -ENOENT;
+ }
+
+ vlan_mapping.index = idx;
+ vlan_mapping.table = GSWIP_TABLE_VLAN_MAPPING;
+ err = gswip_pce_table_entry_read(priv, &vlan_mapping);
+ if (err) {
+ dev_err(priv->dev, "failed to read VLAN mapping: %d\n", err);
+ return err;
+ }
+
+ vlan_mapping.val[1] &= ~BIT(port);
+ vlan_mapping.val[2] &= ~BIT(port);
+ err = gswip_pce_table_entry_write(priv, &vlan_mapping);
+ if (err) {
+ dev_err(priv->dev, "failed to write VLAN mapping: %d\n", err);
+ return err;
+ }
+
+ /* In case all ports are removed from the bridge, remove the VLAN */
+ if (!(vlan_mapping.val[1] & ~dsa_cpu_ports(priv->ds))) {
+ err = gswip_vlan_active_remove(priv, idx);
+ if (err) {
+ dev_err(priv->dev, "failed to write active VLAN: %d\n",
+ err);
+ return err;
+ }
+ }
+
+ gswip_port_commit_pvid(priv, port);
+
+ return 0;
+}
+
+static int gswip_port_bridge_join(struct dsa_switch *ds, int port,
+ struct dsa_bridge bridge,
+ bool *tx_fwd_offload,
+ struct netlink_ext_ack *extack)
+{
+ struct net_device *br = bridge.dev;
+ struct gswip_priv *priv = ds->priv;
+ int err;
+
+ /* Set up the VLAN for VLAN-unaware bridging for this port, and remove
+ * it from the "single-port bridge" through which it was operating as
+ * standalone.
+ */
+ err = gswip_vlan_add(priv, br, port, GSWIP_VLAN_UNAWARE_PVID,
+ true, true, false);
+ if (err)
+ return err;
+
+ return gswip_add_single_port_br(priv, port, false);
+}
+
+static void gswip_port_bridge_leave(struct dsa_switch *ds, int port,
+ struct dsa_bridge bridge)
+{
+ struct net_device *br = bridge.dev;
+ struct gswip_priv *priv = ds->priv;
+
+ /* Add the port back to the "single-port bridge", and remove it from
+ * the VLAN-unaware PVID created for this bridge.
+ */
+ gswip_add_single_port_br(priv, port, true);
+ gswip_vlan_remove(priv, br, port, GSWIP_VLAN_UNAWARE_PVID);
+}
+
+static int gswip_port_vlan_prepare(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_vlan *vlan,
+ struct netlink_ext_ack *extack)
+{
+ struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
+ struct gswip_priv *priv = ds->priv;
+ unsigned int max_ports = priv->hw_info->max_ports;
+ int pos = max_ports;
+ int i, idx = -1;
+
+ /* We only support VLAN filtering on bridges */
+ if (!dsa_is_cpu_port(ds, port) && !bridge)
+ return -EOPNOTSUPP;
+
+ /* Check if there is already a page for this VLAN */
+ for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
+ if (priv->vlans[i].bridge == bridge &&
+ priv->vlans[i].vid == vlan->vid) {
+ idx = i;
+ break;
+ }
+ }
+
+ /* If this VLAN is not programmed yet, we have to reserve
+ * one entry in the VLAN table. Make sure we start at the
+ * next position round.
+ */
+ if (idx == -1) {
+ /* Look for a free slot */
+ for (; pos < ARRAY_SIZE(priv->vlans); pos++) {
+ if (!priv->vlans[pos].bridge) {
+ idx = pos;
+ pos++;
+ break;
+ }
+ }
+
+ if (idx == -1) {
+ NL_SET_ERR_MSG_MOD(extack, "No slot in VLAN table");
+ return -ENOSPC;
+ }
+ }
+
+ return 0;
+}
+
+static int gswip_port_vlan_add(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_vlan *vlan,
+ struct netlink_ext_ack *extack)
+{
+ struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
+ struct gswip_priv *priv = ds->priv;
+ bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
+ bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
+ int err;
+
+ if (vlan->vid == GSWIP_VLAN_UNAWARE_PVID)
+ return 0;
+
+ err = gswip_port_vlan_prepare(ds, port, vlan, extack);
+ if (err)
+ return err;
+
+ /* We have to receive all packets on the CPU port and should not
+ * do any VLAN filtering here. This is also called with bridge
+ * NULL and then we do not know for which bridge to configure
+ * this.
+ */
+ if (dsa_is_cpu_port(ds, port))
+ return 0;
+
+ return gswip_vlan_add(priv, bridge, port, vlan->vid, untagged, pvid,
+ true);
+}
+
+static int gswip_port_vlan_del(struct dsa_switch *ds, int port,
+ const struct switchdev_obj_port_vlan *vlan)
+{
+ struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
+ struct gswip_priv *priv = ds->priv;
+
+ if (vlan->vid == GSWIP_VLAN_UNAWARE_PVID)
+ return 0;
+
+ /* We have to receive all packets on the CPU port and should not
+ * do any VLAN filtering here. This is also called with bridge
+ * NULL and then we do not know for which bridge to configure
+ * this.
+ */
+ if (dsa_is_cpu_port(ds, port))
+ return 0;
+
+ return gswip_vlan_remove(priv, bridge, port, vlan->vid);
+}
+
+static void gswip_port_fast_age(struct dsa_switch *ds, int port)
+{
+ struct gswip_priv *priv = ds->priv;
+ struct gswip_pce_table_entry mac_bridge = {0,};
+ int i;
+ int err;
+
+ for (i = 0; i < 2048; i++) {
+ mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
+ mac_bridge.index = i;
+
+ err = gswip_pce_table_entry_read(priv, &mac_bridge);
+ if (err) {
+ dev_err(priv->dev, "failed to read mac bridge: %d\n",
+ err);
+ return;
+ }
+
+ if (!mac_bridge.valid)
+ continue;
+
+ if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC)
+ continue;
+
+ if (port != FIELD_GET(GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT,
+ mac_bridge.val[0]))
+ continue;
+
+ mac_bridge.valid = false;
+ err = gswip_pce_table_entry_write(priv, &mac_bridge);
+ if (err) {
+ dev_err(priv->dev, "failed to write mac bridge: %d\n",
+ err);
+ return;
+ }
+ }
+}
+
+static void gswip_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
+{
+ struct gswip_priv *priv = ds->priv;
+ u32 stp_state;
+
+ switch (state) {
+ case BR_STATE_DISABLED:
+ regmap_clear_bits(priv->gswip, GSWIP_SDMA_PCTRLp(port),
+ GSWIP_SDMA_PCTRL_EN);
+ return;
+ case BR_STATE_BLOCKING:
+ case BR_STATE_LISTENING:
+ stp_state = GSWIP_PCE_PCTRL_0_PSTATE_LISTEN;
+ break;
+ case BR_STATE_LEARNING:
+ stp_state = GSWIP_PCE_PCTRL_0_PSTATE_LEARNING;
+ break;
+ case BR_STATE_FORWARDING:
+ stp_state = GSWIP_PCE_PCTRL_0_PSTATE_FORWARDING;
+ break;
+ default:
+ dev_err(priv->dev, "invalid STP state: %d\n", state);
+ return;
+ }
+
+ regmap_set_bits(priv->gswip, GSWIP_SDMA_PCTRLp(port),
+ GSWIP_SDMA_PCTRL_EN);
+ regmap_write_bits(priv->gswip, GSWIP_PCE_PCTRL_0p(port),
+ GSWIP_PCE_PCTRL_0_PSTATE_MASK,
+ stp_state);
+}
+
+static int gswip_port_fdb(struct dsa_switch *ds, int port,
+ struct net_device *bridge, const unsigned char *addr,
+ u16 vid, bool add)
+{
+ struct gswip_priv *priv = ds->priv;
+ struct gswip_pce_table_entry mac_bridge = {0,};
+ unsigned int max_ports = priv->hw_info->max_ports;
+ int fid = -1;
+ int i;
+ int err;
+
+ for (i = max_ports; i < ARRAY_SIZE(priv->vlans); i++) {
+ if (priv->vlans[i].bridge == bridge) {
+ fid = priv->vlans[i].fid;
+ break;
+ }
+ }
+
+ if (fid == -1) {
+ dev_err(priv->dev, "no FID found for bridge %s\n",
+ bridge->name);
+ return -EINVAL;
+ }
+
+ mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
+ mac_bridge.key_mode = true;
+ mac_bridge.key[0] = addr[5] | (addr[4] << 8);
+ mac_bridge.key[1] = addr[3] | (addr[2] << 8);
+ mac_bridge.key[2] = addr[1] | (addr[0] << 8);
+ mac_bridge.key[3] = FIELD_PREP(GSWIP_TABLE_MAC_BRIDGE_KEY3_FID, fid);
+ mac_bridge.val[0] = add ? BIT(port) : 0; /* port map */
+ mac_bridge.val[1] = GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC;
+ mac_bridge.valid = add;
+
+ err = gswip_pce_table_entry_write(priv, &mac_bridge);
+ if (err)
+ dev_err(priv->dev, "failed to write mac bridge: %d\n", err);
+
+ return err;
+}
+
+static int gswip_port_fdb_add(struct dsa_switch *ds, int port,
+ const unsigned char *addr, u16 vid,
+ struct dsa_db db)
+{
+ if (db.type != DSA_DB_BRIDGE)
+ return -EOPNOTSUPP;
+
+ return gswip_port_fdb(ds, port, db.bridge.dev, addr, vid, true);
+}
+
+static int gswip_port_fdb_del(struct dsa_switch *ds, int port,
+ const unsigned char *addr, u16 vid,
+ struct dsa_db db)
+{
+ if (db.type != DSA_DB_BRIDGE)
+ return -EOPNOTSUPP;
+
+ return gswip_port_fdb(ds, port, db.bridge.dev, addr, vid, false);
+}
+
+static int gswip_port_fdb_dump(struct dsa_switch *ds, int port,
+ dsa_fdb_dump_cb_t *cb, void *data)
+{
+ struct gswip_priv *priv = ds->priv;
+ struct gswip_pce_table_entry mac_bridge = {0,};
+ unsigned char addr[ETH_ALEN];
+ int i;
+ int err;
+
+ for (i = 0; i < 2048; i++) {
+ mac_bridge.table = GSWIP_TABLE_MAC_BRIDGE;
+ mac_bridge.index = i;
+
+ err = gswip_pce_table_entry_read(priv, &mac_bridge);
+ if (err) {
+ dev_err(priv->dev,
+ "failed to read mac bridge entry %d: %d\n",
+ i, err);
+ return err;
+ }
+
+ if (!mac_bridge.valid)
+ continue;
+
+ addr[5] = mac_bridge.key[0] & 0xff;
+ addr[4] = (mac_bridge.key[0] >> 8) & 0xff;
+ addr[3] = mac_bridge.key[1] & 0xff;
+ addr[2] = (mac_bridge.key[1] >> 8) & 0xff;
+ addr[1] = mac_bridge.key[2] & 0xff;
+ addr[0] = (mac_bridge.key[2] >> 8) & 0xff;
+ if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC) {
+ if (mac_bridge.val[0] & BIT(port)) {
+ err = cb(addr, 0, true, data);
+ if (err)
+ return err;
+ }
+ } else {
+ if (port == FIELD_GET(GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT,
+ mac_bridge.val[0])) {
+ err = cb(addr, 0, false, data);
+ if (err)
+ return err;
+ }
+ }
+ }
+ return 0;
+}
+
+static int gswip_port_max_mtu(struct dsa_switch *ds, int port)
+{
+ /* Includes 8 bytes for special header. */
+ return GSWIP_MAX_PACKET_LENGTH - VLAN_ETH_HLEN - ETH_FCS_LEN;
+}
+
+static int gswip_port_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
+{
+ struct gswip_priv *priv = ds->priv;
+
+ /* CPU port always has maximum mtu of user ports, so use it to set
+ * switch frame size, including 8 byte special header.
+ */
+ if (dsa_is_cpu_port(ds, port)) {
+ new_mtu += 8;
+ regmap_write(priv->gswip, GSWIP_MAC_FLEN,
+ VLAN_ETH_HLEN + new_mtu + ETH_FCS_LEN);
+ }
+
+ /* Enable MLEN for ports with non-standard MTUs, including the special
+ * header on the CPU port added above.
+ */
+ if (new_mtu != ETH_DATA_LEN)
+ regmap_set_bits(priv->gswip, GSWIP_MAC_CTRL_2p(port),
+ GSWIP_MAC_CTRL_2_MLEN);
+ else
+ regmap_clear_bits(priv->gswip, GSWIP_MAC_CTRL_2p(port),
+ GSWIP_MAC_CTRL_2_MLEN);
+
+ return 0;
+}
+
+static void gswip_phylink_get_caps(struct dsa_switch *ds, int port,
+ struct phylink_config *config)
+{
+ struct gswip_priv *priv = ds->priv;
+
+ priv->hw_info->phylink_get_caps(ds, port, config);
+}
+
+static void gswip_port_set_link(struct gswip_priv *priv, int port, bool link)
+{
+ u32 mdio_phy;
+
+ if (link)
+ mdio_phy = GSWIP_MDIO_PHY_LINK_UP;
+ else
+ mdio_phy = GSWIP_MDIO_PHY_LINK_DOWN;
+
+ regmap_write_bits(priv->mdio, GSWIP_MDIO_PHYp(port),
+ GSWIP_MDIO_PHY_LINK_MASK, mdio_phy);
+}
+
+static void gswip_port_set_speed(struct gswip_priv *priv, int port, int speed,
+ phy_interface_t interface)
+{
+ u32 mdio_phy = 0, mii_cfg = 0, mac_ctrl_0 = 0;
+
+ switch (speed) {
+ case SPEED_10:
+ mdio_phy = GSWIP_MDIO_PHY_SPEED_M10;
+
+ if (interface == PHY_INTERFACE_MODE_RMII)
+ mii_cfg = GSWIP_MII_CFG_RATE_M50;
+ else
+ mii_cfg = GSWIP_MII_CFG_RATE_M2P5;
+
+ mac_ctrl_0 = GSWIP_MAC_CTRL_0_GMII_MII;
+ break;
+
+ case SPEED_100:
+ mdio_phy = GSWIP_MDIO_PHY_SPEED_M100;
+
+ if (interface == PHY_INTERFACE_MODE_RMII)
+ mii_cfg = GSWIP_MII_CFG_RATE_M50;
+ else
+ mii_cfg = GSWIP_MII_CFG_RATE_M25;
+
+ mac_ctrl_0 = GSWIP_MAC_CTRL_0_GMII_MII;
+ break;
+
+ case SPEED_1000:
+ mdio_phy = GSWIP_MDIO_PHY_SPEED_G1;
+
+ mii_cfg = GSWIP_MII_CFG_RATE_M125;
+
+ mac_ctrl_0 = GSWIP_MAC_CTRL_0_GMII_RGMII;
+ break;
+ }
+
+ regmap_write_bits(priv->mdio, GSWIP_MDIO_PHYp(port),
+ GSWIP_MDIO_PHY_SPEED_MASK, mdio_phy);
+ gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_RATE_MASK, mii_cfg, port);
+ regmap_write_bits(priv->gswip, GSWIP_MAC_CTRL_0p(port),
+ GSWIP_MAC_CTRL_0_GMII_MASK, mac_ctrl_0);
+}
+
+static void gswip_port_set_duplex(struct gswip_priv *priv, int port, int duplex)
+{
+ u32 mac_ctrl_0, mdio_phy;
+
+ if (duplex == DUPLEX_FULL) {
+ mac_ctrl_0 = GSWIP_MAC_CTRL_0_FDUP_EN;
+ mdio_phy = GSWIP_MDIO_PHY_FDUP_EN;
+ } else {
+ mac_ctrl_0 = GSWIP_MAC_CTRL_0_FDUP_DIS;
+ mdio_phy = GSWIP_MDIO_PHY_FDUP_DIS;
+ }
+
+ regmap_write_bits(priv->gswip, GSWIP_MAC_CTRL_0p(port),
+ GSWIP_MAC_CTRL_0_FDUP_MASK, mac_ctrl_0);
+ regmap_write_bits(priv->mdio, GSWIP_MDIO_PHYp(port),
+ GSWIP_MDIO_PHY_FDUP_MASK, mdio_phy);
+}
+
+static void gswip_port_set_pause(struct gswip_priv *priv, int port,
+ bool tx_pause, bool rx_pause)
+{
+ u32 mac_ctrl_0, mdio_phy;
+
+ if (tx_pause && rx_pause) {
+ mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_RXTX;
+ mdio_phy = GSWIP_MDIO_PHY_FCONTX_EN |
+ GSWIP_MDIO_PHY_FCONRX_EN;
+ } else if (tx_pause) {
+ mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_TX;
+ mdio_phy = GSWIP_MDIO_PHY_FCONTX_EN |
+ GSWIP_MDIO_PHY_FCONRX_DIS;
+ } else if (rx_pause) {
+ mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_RX;
+ mdio_phy = GSWIP_MDIO_PHY_FCONTX_DIS |
+ GSWIP_MDIO_PHY_FCONRX_EN;
+ } else {
+ mac_ctrl_0 = GSWIP_MAC_CTRL_0_FCON_NONE;
+ mdio_phy = GSWIP_MDIO_PHY_FCONTX_DIS |
+ GSWIP_MDIO_PHY_FCONRX_DIS;
+ }
+
+ regmap_write_bits(priv->gswip, GSWIP_MAC_CTRL_0p(port),
+ GSWIP_MAC_CTRL_0_FCON_MASK, mac_ctrl_0);
+ regmap_write_bits(priv->mdio, GSWIP_MDIO_PHYp(port),
+ GSWIP_MDIO_PHY_FCONTX_MASK | GSWIP_MDIO_PHY_FCONRX_MASK,
+ mdio_phy);
+}
+
+static void gswip_phylink_mac_config(struct phylink_config *config,
+ unsigned int mode,
+ const struct phylink_link_state *state)
+{
+ struct dsa_port *dp = dsa_phylink_to_port(config);
+ struct gswip_priv *priv = dp->ds->priv;
+ int port = dp->index;
+ u32 miicfg = 0;
+
+ miicfg |= GSWIP_MII_CFG_LDCLKDIS;
+
+ switch (state->interface) {
+ case PHY_INTERFACE_MODE_SGMII:
+ case PHY_INTERFACE_MODE_1000BASEX:
+ case PHY_INTERFACE_MODE_2500BASEX:
+ return;
+ case PHY_INTERFACE_MODE_MII:
+ case PHY_INTERFACE_MODE_INTERNAL:
+ miicfg |= GSWIP_MII_CFG_MODE_MIIM;
+ break;
+ case PHY_INTERFACE_MODE_REVMII:
+ miicfg |= GSWIP_MII_CFG_MODE_MIIP;
+ break;
+ case PHY_INTERFACE_MODE_RMII:
+ miicfg |= GSWIP_MII_CFG_MODE_RMIIM;
+ break;
+ case PHY_INTERFACE_MODE_RGMII:
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ miicfg |= GSWIP_MII_CFG_MODE_RGMII;
+ break;
+ case PHY_INTERFACE_MODE_GMII:
+ miicfg |= GSWIP_MII_CFG_MODE_GMII;
+ break;
+ default:
+ dev_err(dp->ds->dev,
+ "Unsupported interface: %d\n", state->interface);
+ return;
+ }
+
+ gswip_mii_mask_cfg(priv,
+ GSWIP_MII_CFG_MODE_MASK | GSWIP_MII_CFG_RMII_CLK |
+ GSWIP_MII_CFG_RGMII_IBS | GSWIP_MII_CFG_LDCLKDIS,
+ miicfg, port);
+
+ switch (state->interface) {
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_TXDLY_MASK |
+ GSWIP_MII_PCDU_RXDLY_MASK, 0, port);
+ break;
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_RXDLY_MASK, 0, port);
+ break;
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ gswip_mii_mask_pcdu(priv, GSWIP_MII_PCDU_TXDLY_MASK, 0, port);
+ break;
+ default:
+ break;
+ }
+}
+
+static void gswip_phylink_mac_link_down(struct phylink_config *config,
+ unsigned int mode,
+ phy_interface_t interface)
+{
+ struct dsa_port *dp = dsa_phylink_to_port(config);
+ struct gswip_priv *priv = dp->ds->priv;
+ int port = dp->index;
+
+ gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_EN, 0, port);
+
+ if (!dsa_port_is_cpu(dp))
+ gswip_port_set_link(priv, port, false);
+}
+
+static void gswip_phylink_mac_link_up(struct phylink_config *config,
+ struct phy_device *phydev,
+ unsigned int mode,
+ phy_interface_t interface,
+ int speed, int duplex,
+ bool tx_pause, bool rx_pause)
+{
+ struct dsa_port *dp = dsa_phylink_to_port(config);
+ struct gswip_priv *priv = dp->ds->priv;
+ int port = dp->index;
+
+ if (!dsa_port_is_cpu(dp)) {
+ gswip_port_set_link(priv, port, true);
+ gswip_port_set_speed(priv, port, speed, interface);
+ gswip_port_set_duplex(priv, port, duplex);
+ gswip_port_set_pause(priv, port, tx_pause, rx_pause);
+ }
+
+ gswip_mii_mask_cfg(priv, GSWIP_MII_CFG_EN, GSWIP_MII_CFG_EN, port);
+}
+
+static void gswip_get_strings(struct dsa_switch *ds, int port, u32 stringset,
+ uint8_t *data)
+{
+ int i;
+
+ if (stringset != ETH_SS_STATS)
+ return;
+
+ for (i = 0; i < ARRAY_SIZE(gswip_rmon_cnt); i++)
+ ethtool_puts(&data, gswip_rmon_cnt[i].name);
+}
+
+static u32 gswip_bcm_ram_entry_read(struct gswip_priv *priv, u32 table,
+ u32 index)
+{
+ u32 result, val;
+ int err;
+
+ regmap_write(priv->gswip, GSWIP_BM_RAM_ADDR, index);
+ regmap_write_bits(priv->gswip, GSWIP_BM_RAM_CTRL,
+ GSWIP_BM_RAM_CTRL_ADDR_MASK | GSWIP_BM_RAM_CTRL_OPMOD |
+ GSWIP_BM_RAM_CTRL_BAS,
+ table | GSWIP_BM_RAM_CTRL_BAS);
+
+ err = gswip_switch_r_timeout(priv, GSWIP_BM_RAM_CTRL,
+ GSWIP_BM_RAM_CTRL_BAS);
+ if (err) {
+ dev_err(priv->dev, "timeout while reading table: %u, index: %u\n",
+ table, index);
+ return 0;
+ }
+
+ regmap_read(priv->gswip, GSWIP_BM_RAM_VAL(0), &result);
+ regmap_read(priv->gswip, GSWIP_BM_RAM_VAL(1), &val);
+ result |= val << 16;
+
+ return result;
+}
+
+static void gswip_get_ethtool_stats(struct dsa_switch *ds, int port,
+ uint64_t *data)
+{
+ struct gswip_priv *priv = ds->priv;
+ const struct gswip_rmon_cnt_desc *rmon_cnt;
+ int i;
+ u64 high;
+
+ for (i = 0; i < ARRAY_SIZE(gswip_rmon_cnt); i++) {
+ rmon_cnt = &gswip_rmon_cnt[i];
+
+ data[i] = gswip_bcm_ram_entry_read(priv, port,
+ rmon_cnt->offset);
+ if (rmon_cnt->size == 2) {
+ high = gswip_bcm_ram_entry_read(priv, port,
+ rmon_cnt->offset + 1);
+ data[i] |= high << 32;
+ }
+ }
+}
+
+static int gswip_get_sset_count(struct dsa_switch *ds, int port, int sset)
+{
+ if (sset != ETH_SS_STATS)
+ return 0;
+
+ return ARRAY_SIZE(gswip_rmon_cnt);
+}
+
+static struct phylink_pcs *gswip_phylink_mac_select_pcs(struct phylink_config *config,
+ phy_interface_t interface)
+{
+ struct dsa_port *dp = dsa_phylink_to_port(config);
+ struct gswip_priv *priv = dp->ds->priv;
+
+ if (priv->hw_info->mac_select_pcs)
+ return priv->hw_info->mac_select_pcs(config, interface);
+
+ return NULL;
+}
+
+static const struct phylink_mac_ops gswip_phylink_mac_ops = {
+ .mac_config = gswip_phylink_mac_config,
+ .mac_link_down = gswip_phylink_mac_link_down,
+ .mac_link_up = gswip_phylink_mac_link_up,
+ .mac_select_pcs = gswip_phylink_mac_select_pcs,
+};
+
+static const struct dsa_switch_ops gswip_switch_ops = {
+ .get_tag_protocol = gswip_get_tag_protocol,
+ .setup = gswip_setup,
+ .port_setup = gswip_port_setup,
+ .port_enable = gswip_port_enable,
+ .port_disable = gswip_port_disable,
+ .port_bridge_join = gswip_port_bridge_join,
+ .port_bridge_leave = gswip_port_bridge_leave,
+ .port_fast_age = gswip_port_fast_age,
+ .port_vlan_filtering = gswip_port_vlan_filtering,
+ .port_vlan_add = gswip_port_vlan_add,
+ .port_vlan_del = gswip_port_vlan_del,
+ .port_stp_state_set = gswip_port_stp_state_set,
+ .port_fdb_add = gswip_port_fdb_add,
+ .port_fdb_del = gswip_port_fdb_del,
+ .port_fdb_dump = gswip_port_fdb_dump,
+ .port_change_mtu = gswip_port_change_mtu,
+ .port_max_mtu = gswip_port_max_mtu,
+ .phylink_get_caps = gswip_phylink_get_caps,
+ .get_strings = gswip_get_strings,
+ .get_ethtool_stats = gswip_get_ethtool_stats,
+ .get_sset_count = gswip_get_sset_count,
+};
+
+void gswip_disable_switch(struct gswip_priv *priv)
+{
+ regmap_clear_bits(priv->mdio, GSWIP_MDIO_GLOB, GSWIP_MDIO_GLOB_ENABLE);
+}
+EXPORT_SYMBOL_GPL(gswip_disable_switch);
+
+static int gswip_validate_cpu_port(struct dsa_switch *ds)
+{
+ struct gswip_priv *priv = ds->priv;
+ struct dsa_port *cpu_dp;
+ int cpu_port = -1;
+
+ dsa_switch_for_each_cpu_port(cpu_dp, ds) {
+ if (cpu_port != -1)
+ return dev_err_probe(ds->dev, -EINVAL,
+ "only a single CPU port is supported\n");
+
+ cpu_port = cpu_dp->index;
+ }
+
+ if (cpu_port == -1)
+ return dev_err_probe(ds->dev, -EINVAL, "no CPU port defined\n");
+
+ if (BIT(cpu_port) & ~priv->hw_info->allowed_cpu_ports)
+ return dev_err_probe(ds->dev, -EINVAL,
+ "unsupported CPU port defined\n");
+
+ return 0;
+}
+
+int gswip_probe_common(struct gswip_priv *priv, u32 version)
+{
+ int err;
+
+ mutex_init(&priv->pce_table_lock);
+
+ priv->ds = devm_kzalloc(priv->dev, sizeof(*priv->ds), GFP_KERNEL);
+ if (!priv->ds)
+ return -ENOMEM;
+
+ priv->ds->dev = priv->dev;
+ priv->ds->num_ports = priv->hw_info->max_ports;
+ priv->ds->ops = &gswip_switch_ops;
+ priv->ds->phylink_mac_ops = &gswip_phylink_mac_ops;
+ priv->ds->priv = priv;
+
+ /* The hardware has the 'major/minor' version bytes in the wrong order
+ * preventing numerical comparisons. Construct a 16-bit unsigned integer
+ * having the REV field as most significant byte and the MOD field as
+ * least significant byte. This is effectively swapping the two bytes of
+ * the version variable, but other than using swab16 it doesn't affect
+ * the source variable.
+ */
+ priv->version = GSWIP_VERSION_REV(version) << 8 |
+ GSWIP_VERSION_MOD(version);
+
+ err = dsa_register_switch(priv->ds);
+ if (err)
+ return dev_err_probe(priv->dev, err, "dsa switch registration failed\n");
+
+ err = gswip_validate_cpu_port(priv->ds);
+ if (err)
+ goto disable_switch;
+
+ dev_info(priv->dev, "probed GSWIP version %lx mod %lx\n",
+ GSWIP_VERSION_REV(version), GSWIP_VERSION_MOD(version));
+
+ return 0;
+
+disable_switch:
+ gswip_disable_switch(priv);
+ dsa_unregister_switch(priv->ds);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(gswip_probe_common);
+
+MODULE_AUTHOR("Hauke Mehrtens <hauke@...ke-m.de>");
+MODULE_AUTHOR("Daniel Golle <daniel@...rotopia.org>");
+MODULE_DESCRIPTION("Lantiq / Intel / MaxLinear GSWIP common functions");
+MODULE_LICENSE("GPL");
--
2.51.0
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