[PATCH RFC net-next] net: ethernet: mtk_eth_soc: add paths and SerDes modes for MT7988

From: Daniel Golle
Date: Tue Aug 22 2023 - 14:05:59 EST

MT7988 comes with a built-in 2.5G PHY as well as SerDes lanes to
connect external PHYs or transceivers in USXGMII, 10GBase-R, 5GBase-KR,
2500Base-X, 1000Base-X and Cisco SGMII interface modes.

Implement support for configuring for the new paths to SerDes interfaces
and internal 2.5G PHY.

Add USXGMII PCS driver for 10GBase-R, 5GBase-R and USXGMII mode, and
setup the new PHYA on MT7988 to access the also still existing old
LynxI PCS for 1000Base-X, 2500Base-X and Cisco SGMII PCS interface
modes.

Signed-off-by: Daniel Golle <daniel@xxxxxxxxxxxxxx>
---
Note: This patch needs to be applied on top of series "net: ethernet:
mtk_eth_soc: improve support for MT7988"[1] and requires recent changes
made to mtk-pcs-lynxi[2] for 1G/2.5G modes to work.

[1]: https://patchwork.kernel.org/project/netdevbpf/list/?series=778296
[2]: https://lore.kernel.org/r/f23d1a60d2c9d2fb72e32dcb0eaa5f7e867a3d68.1692327891.git.daniel@xxxxxxxxxxxxxx

drivers/net/ethernet/mediatek/Kconfig | 16 +
drivers/net/ethernet/mediatek/Makefile | 1 +
drivers/net/ethernet/mediatek/mtk_eth_path.c | 123 +++-
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 182 ++++-
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 239 ++++++-
drivers/net/ethernet/mediatek/mtk_usxgmii.c | 709 +++++++++++++++++++
6 files changed, 1239 insertions(+), 31 deletions(-)
create mode 100644 drivers/net/ethernet/mediatek/mtk_usxgmii.c

diff --git a/drivers/net/ethernet/mediatek/Kconfig b/drivers/net/ethernet/mediatek/Kconfig
index da0db417ab690..69d18001e5459 100644
--- a/drivers/net/ethernet/mediatek/Kconfig
+++ b/drivers/net/ethernet/mediatek/Kconfig
@@ -25,6 +25,22 @@ config NET_MEDIATEK_SOC
This driver supports the gigabit ethernet MACs in the
MediaTek SoC family.

+config NET_MEDIATEK_SOC_USXGMII
+ bool "Support USXGMII SerDes on MT7988"
+ depends on (ARCH_MEDIATEK && ARM64) || COMPILE_TEST
+ def_bool NET_MEDIATEK_SOC != n
+ help
+ Include support for 10GE SerDes which can be found on MT7988.
+ If this kernel should run on SoCs with 10 GBit/s Ethernet you
+ will need to select this option to use GMAC2 and GMAC3 with
+ external PHYs, SFP(+) cages in 10GBase-R, 5GBase-R or USXGMII
+ interface modes.
+
+ Note that as the 2500Base-X/1000Base-X/Cisco SGMII SerDes PCS
+ unit (MediaTek LynxI) in MT7988 is connected via the new 10GE
+ SerDes, you will also need to select this option in case you
+ want to use any of those SerDes modes.
+
config NET_MEDIATEK_STAR_EMAC
tristate "MediaTek STAR Ethernet MAC support"
select PHYLIB
diff --git a/drivers/net/ethernet/mediatek/Makefile b/drivers/net/ethernet/mediatek/Makefile
index 03e008fbc859b..115ef0faa0e4b 100644
--- a/drivers/net/ethernet/mediatek/Makefile
+++ b/drivers/net/ethernet/mediatek/Makefile
@@ -5,6 +5,7 @@

obj-$(CONFIG_NET_MEDIATEK_SOC) += mtk_eth.o
mtk_eth-y := mtk_eth_soc.o mtk_eth_path.o mtk_ppe.o mtk_ppe_debugfs.o mtk_ppe_offload.o
+mtk_eth-$(CONFIG_NET_MEDIATEK_SOC_USXGMII) += mtk_usxgmii.o
mtk_eth-$(CONFIG_NET_MEDIATEK_SOC_WED) += mtk_wed.o mtk_wed_mcu.o mtk_wed_wo.o
ifdef CONFIG_DEBUG_FS
mtk_eth-$(CONFIG_NET_MEDIATEK_SOC_WED) += mtk_wed_debugfs.o
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_path.c b/drivers/net/ethernet/mediatek/mtk_eth_path.c
index 7c27a19c4d8f4..0463b0ef4f334 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_path.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_path.c
@@ -31,10 +31,20 @@ static const char *mtk_eth_path_name(u64 path)
return "gmac2_rgmii";
case MTK_ETH_PATH_GMAC2_SGMII:
return "gmac2_sgmii";
+ case MTK_ETH_PATH_GMAC2_2P5GPHY:
+ return "gmac2_2p5gphy";
case MTK_ETH_PATH_GMAC2_GEPHY:
return "gmac2_gephy";
+ case MTK_ETH_PATH_GMAC3_SGMII:
+ return "gmac3_sgmii";
case MTK_ETH_PATH_GDM1_ESW:
return "gdm1_esw";
+ case MTK_ETH_PATH_GMAC1_USXGMII:
+ return "gmac1_usxgmii";
+ case MTK_ETH_PATH_GMAC2_USXGMII:
+ return "gmac2_usxgmii";
+ case MTK_ETH_PATH_GMAC3_USXGMII:
+ return "gmac3_usxgmii";
default:
return "unknown path";
}
@@ -127,6 +137,27 @@ static int set_mux_u3_gmac2_to_qphy(struct mtk_eth *eth, u64 path)
return 0;
}

+static int set_mux_gmac2_to_2p5gphy(struct mtk_eth *eth, u64 path)
+{
+ int ret;
+
+ if (path == MTK_ETH_PATH_GMAC2_2P5GPHY) {
+ ret = regmap_clear_bits(eth->ethsys, ETHSYS_SYSCFG0, SYSCFG0_SGMII_GMAC2_V2);
+ if (ret)
+ return ret;
+
+ /* Setup mux to 2p5g PHY */
+ ret = regmap_clear_bits(eth->infra, TOP_MISC_NETSYS_PCS_MUX, MUX_G2_USXGMII_SEL);
+ if (ret)
+ return ret;
+
+ dev_dbg(eth->dev, "path %s in %s updated\n",
+ mtk_eth_path_name(path), __func__);
+ }
+
+ return 0;
+}
+
static int set_mux_gmac1_gmac2_to_sgmii_rgmii(struct mtk_eth *eth, u64 path)
{
unsigned int val = 0;
@@ -165,7 +196,48 @@ static int set_mux_gmac1_gmac2_to_sgmii_rgmii(struct mtk_eth *eth, u64 path)
return 0;
}

-static int set_mux_gmac12_to_gephy_sgmii(struct mtk_eth *eth, u64 path)
+static int set_mux_gmac123_to_usxgmii(struct mtk_eth *eth, u64 path)
+{
+ unsigned int val = 0;
+ bool updated = true;
+ int mac_id = 0;
+
+ /* Disable SYSCFG1 SGMII */
+ regmap_read(eth->ethsys, ETHSYS_SYSCFG0, &val);
+
+ switch (path) {
+ case MTK_ETH_PATH_GMAC1_USXGMII:
+ val &= ~(u32)SYSCFG0_SGMII_GMAC1_V2;
+ mac_id = MTK_GMAC1_ID;
+ break;
+ case MTK_ETH_PATH_GMAC2_USXGMII:
+ val &= ~(u32)SYSCFG0_SGMII_GMAC2_V2;
+ mac_id = MTK_GMAC2_ID;
+ break;
+ case MTK_ETH_PATH_GMAC3_USXGMII:
+ val &= ~(u32)SYSCFG0_SGMII_GMAC3_V2;
+ mac_id = MTK_GMAC3_ID;
+ break;
+ default:
+ updated = false;
+ };
+
+ if (updated) {
+ regmap_update_bits(eth->ethsys, ETHSYS_SYSCFG0,
+ SYSCFG0_SGMII_MASK, val);
+
+ if (mac_id == MTK_GMAC2_ID)
+ regmap_set_bits(eth->infra, TOP_MISC_NETSYS_PCS_MUX,
+ MUX_G2_USXGMII_SEL);
+ }
+
+ dev_dbg(eth->dev, "path %s in %s updated = %d\n",
+ mtk_eth_path_name(path), __func__, updated);
+
+ return 0;
+}
+
+static int set_mux_gmac123_to_gephy_sgmii(struct mtk_eth *eth, u64 path)
{
unsigned int val = 0;
bool updated = true;
@@ -182,6 +254,9 @@ static int set_mux_gmac12_to_gephy_sgmii(struct mtk_eth *eth, u64 path)
case MTK_ETH_PATH_GMAC2_SGMII:
val |= SYSCFG0_SGMII_GMAC2_V2;
break;
+ case MTK_ETH_PATH_GMAC3_SGMII:
+ val |= SYSCFG0_SGMII_GMAC3_V2;
+ break;
default:
updated = false;
}
@@ -209,6 +284,10 @@ static const struct mtk_eth_muxc mtk_eth_muxc[] = {
.name = "mux_u3_gmac2_to_qphy",
.cap_bit = MTK_ETH_MUX_U3_GMAC2_TO_QPHY,
.set_path = set_mux_u3_gmac2_to_qphy,
+ }, {
+ .name = "mux_gmac2_to_2p5gphy",
+ .cap_bit = MTK_ETH_MUX_GMAC2_TO_2P5GPHY,
+ .set_path = set_mux_gmac2_to_2p5gphy,
}, {
.name = "mux_gmac1_gmac2_to_sgmii_rgmii",
.cap_bit = MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII,
@@ -216,7 +295,15 @@ static const struct mtk_eth_muxc mtk_eth_muxc[] = {
}, {
.name = "mux_gmac12_to_gephy_sgmii",
.cap_bit = MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII,
- .set_path = set_mux_gmac12_to_gephy_sgmii,
+ .set_path = set_mux_gmac123_to_gephy_sgmii,
+ }, {
+ .name = "mux_gmac123_to_gephy_sgmii",
+ .cap_bit = MTK_ETH_MUX_GMAC123_TO_GEPHY_SGMII,
+ .set_path = set_mux_gmac123_to_gephy_sgmii,
+ }, {
+ .name = "mux_gmac123_to_usxgmii",
+ .cap_bit = MTK_ETH_MUX_GMAC123_TO_USXGMII,
+ .set_path = set_mux_gmac123_to_usxgmii,
},
};

@@ -249,12 +336,39 @@ static int mtk_eth_mux_setup(struct mtk_eth *eth, u64 path)
return err;
}

+int mtk_gmac_usxgmii_path_setup(struct mtk_eth *eth, int mac_id)
+{
+ u64 path;
+
+ path = (mac_id == MTK_GMAC1_ID) ? MTK_ETH_PATH_GMAC1_USXGMII :
+ (mac_id == MTK_GMAC2_ID) ? MTK_ETH_PATH_GMAC2_USXGMII :
+ MTK_ETH_PATH_GMAC3_USXGMII;
+
+ /* Setup proper MUXes along the path */
+ return mtk_eth_mux_setup(eth, path);
+}
+
int mtk_gmac_sgmii_path_setup(struct mtk_eth *eth, int mac_id)
{
u64 path;

- path = (mac_id == 0) ? MTK_ETH_PATH_GMAC1_SGMII :
- MTK_ETH_PATH_GMAC2_SGMII;
+ path = (mac_id == MTK_GMAC1_ID) ? MTK_ETH_PATH_GMAC1_SGMII :
+ (mac_id == MTK_GMAC2_ID) ? MTK_ETH_PATH_GMAC2_SGMII :
+ MTK_ETH_PATH_GMAC3_SGMII;
+
+ /* Setup proper MUXes along the path */
+ return mtk_eth_mux_setup(eth, path);
+}
+
+int mtk_gmac_2p5gphy_path_setup(struct mtk_eth *eth, int mac_id)
+{
+ u64 path = 0;
+
+ if (mac_id == MTK_GMAC2_ID)
+ path = MTK_ETH_PATH_GMAC2_2P5GPHY;
+
+ if (!path)
+ return -EINVAL;

/* Setup proper MUXes along the path */
return mtk_eth_mux_setup(eth, path);
@@ -284,4 +398,3 @@ int mtk_gmac_rgmii_path_setup(struct mtk_eth *eth, int mac_id)
/* Setup proper MUXes along the path */
return mtk_eth_mux_setup(eth, path);
}
-
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 6ad42e3b488f7..02206351322bf 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -507,6 +507,30 @@ static void mtk_setup_bridge_switch(struct mtk_eth *eth)
MTK_GSW_CFG);
}

+static bool mtk_check_gmac23_idle(struct mtk_mac *mac)
+{
+ u32 mac_fsm, gdm_fsm;
+
+ mac_fsm = mtk_r32(mac->hw, MTK_MAC_FSM(mac->id));
+
+ switch (mac->id) {
+ case MTK_GMAC2_ID:
+ gdm_fsm = mtk_r32(mac->hw, MTK_FE_GDM2_FSM);
+ break;
+ case MTK_GMAC3_ID:
+ gdm_fsm = mtk_r32(mac->hw, MTK_FE_GDM3_FSM);
+ break;
+ default:
+ return true;
+ };
+
+ if ((mac_fsm & 0xFFFF0000) == 0x01010000 &&
+ (gdm_fsm & 0xFFFF0000) == 0x00000000)
+ return true;
+
+ return false;
+}
+
static struct phylink_pcs *mtk_mac_select_pcs(struct phylink_config *config,
phy_interface_t interface)
{
@@ -515,12 +539,20 @@ static struct phylink_pcs *mtk_mac_select_pcs(struct phylink_config *config,
struct mtk_eth *eth = mac->hw;
unsigned int sid;

- if (interface == PHY_INTERFACE_MODE_SGMII ||
- phy_interface_mode_is_8023z(interface)) {
- sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ?
- 0 : mac->id;
-
- return eth->sgmii_pcs[sid];
+ if ((interface == PHY_INTERFACE_MODE_SGMII ||
+ phy_interface_mode_is_8023z(interface)) &&
+ MTK_HAS_CAPS(eth->soc->caps, MTK_SGMII)) {
+ sid = mtk_mac2xgmii_id(eth, mac->id);
+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_USXGMII))
+ return mtk_sgmii_wrapper_select_pcs(eth, mac->id);
+ else
+ return eth->sgmii_pcs[sid];
+ } else if ((interface == PHY_INTERFACE_MODE_USXGMII ||
+ interface == PHY_INTERFACE_MODE_10GBASER ||
+ interface == PHY_INTERFACE_MODE_5GBASER) &&
+ MTK_HAS_CAPS(eth->soc->caps, MTK_USXGMII) &&
+ mac->id != MTK_GMAC1_ID) {
+ return mtk_usxgmii_select_pcs(eth, mac->id);
}

return NULL;
@@ -566,7 +598,22 @@ static void mtk_mac_config(struct phylink_config *config, unsigned int mode,
goto init_err;
}
break;
+ case PHY_INTERFACE_MODE_USXGMII:
+ case PHY_INTERFACE_MODE_10GBASER:
+ case PHY_INTERFACE_MODE_5GBASER:
+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_USXGMII)) {
+ err = mtk_gmac_usxgmii_path_setup(eth, mac->id);
+ if (err)
+ goto init_err;
+ }
+ break;
case PHY_INTERFACE_MODE_INTERNAL:
+ if (mac->id == MTK_GMAC2_ID &&
+ MTK_HAS_CAPS(eth->soc->caps, MTK_2P5GPHY)) {
+ err = mtk_gmac_2p5gphy_path_setup(eth, mac->id);
+ if (err)
+ goto init_err;
+ }
break;
default:
goto err_phy;
@@ -613,8 +660,6 @@ static void mtk_mac_config(struct phylink_config *config, unsigned int mode,
val &= ~SYSCFG0_GE_MODE(SYSCFG0_GE_MASK, mac->id);
val |= SYSCFG0_GE_MODE(ge_mode, mac->id);
regmap_write(eth->ethsys, ETHSYS_SYSCFG0, val);
-
- mac->interface = state->interface;
}

/* SGMII */
@@ -631,21 +676,40 @@ static void mtk_mac_config(struct phylink_config *config, unsigned int mode,

/* Save the syscfg0 value for mac_finish */
mac->syscfg0 = val;
- } else if (phylink_autoneg_inband(mode)) {
+ } else if (state->interface != PHY_INTERFACE_MODE_USXGMII &&
+ state->interface != PHY_INTERFACE_MODE_10GBASER &&
+ state->interface != PHY_INTERFACE_MODE_5GBASER &&
+ phylink_autoneg_inband(mode)) {
dev_err(eth->dev,
- "In-band mode not supported in non SGMII mode!\n");
+ "In-band mode not supported in non-SerDes modes!\n");
return;
}

/* Setup gmac */
- if (mtk_is_netsys_v3_or_greater(eth) &&
- mac->interface == PHY_INTERFACE_MODE_INTERNAL) {
- mtk_w32(mac->hw, MTK_GDMA_XGDM_SEL, MTK_GDMA_EG_CTRL(mac->id));
- mtk_w32(mac->hw, MAC_MCR_FORCE_LINK_DOWN, MTK_MAC_MCR(mac->id));
+ if (mtk_is_netsys_v3_or_greater(eth)) {
+ if (mtk_interface_mode_is_xgmii(state->interface)) {
+ mtk_w32(mac->hw, MTK_GDMA_XGDM_SEL, MTK_GDMA_EG_CTRL(mac->id));
+ mtk_w32(mac->hw, MAC_MCR_FORCE_LINK_DOWN, MTK_MAC_MCR(mac->id));

- mtk_setup_bridge_switch(eth);
+ if (mac->id == MTK_GMAC1_ID)
+ mtk_setup_bridge_switch(eth);
+ } else {
+ mtk_w32(eth, 0, MTK_GDMA_EG_CTRL(mac->id));
+
+ /* FIXME: In current hardware design, we have to reset FE
+ * when swtiching XGDM to GDM. Therefore, here trigger an SER
+ * to let GDM go back to the initial state.
+ */
+ if ((mtk_interface_mode_is_xgmii(mac->interface) ||
+ mac->interface == PHY_INTERFACE_MODE_NA) &&
+ !mtk_check_gmac23_idle(mac) &&
+ !test_bit(MTK_RESETTING, &eth->state))
+ schedule_work(&eth->pending_work);
+ }
}

+ mac->interface = state->interface;
+
return;

err_phy:
@@ -691,10 +755,13 @@ static void mtk_mac_link_down(struct phylink_config *config, unsigned int mode,
{
struct mtk_mac *mac = container_of(config, struct mtk_mac,
phylink_config);
- u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id));

- mcr &= ~(MAC_MCR_TX_EN | MAC_MCR_RX_EN);
- mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id));
+ if (!mtk_interface_mode_is_xgmii(interface)) {
+ mtk_m32(mac->hw, MAC_MCR_TX_EN | MAC_MCR_RX_EN, 0, MTK_MAC_MCR(mac->id));
+ mtk_m32(mac->hw, MTK_XGMAC_FORCE_LINK(mac->id), 0, MTK_XGMAC_STS(mac->id));
+ } else if (mac->id != MTK_GMAC1_ID) {
+ mtk_m32(mac->hw, XMAC_MCR_TRX_DISABLE, XMAC_MCR_TRX_DISABLE, MTK_XMAC_MCR(mac->id));
+ }
}

static void mtk_set_queue_speed(struct mtk_eth *eth, unsigned int idx,
@@ -766,13 +833,11 @@ static void mtk_set_queue_speed(struct mtk_eth *eth, unsigned int idx,
mtk_w32(eth, val, soc->reg_map->qdma.qtx_sch + ofs);
}

-static void mtk_mac_link_up(struct phylink_config *config,
- struct phy_device *phy,
- unsigned int mode, phy_interface_t interface,
- int speed, int duplex, bool tx_pause, bool rx_pause)
+static void mtk_gdm_mac_link_up(struct mtk_mac *mac,
+ struct phy_device *phy,
+ unsigned int mode, phy_interface_t interface,
+ int speed, int duplex, bool tx_pause, bool rx_pause)
{
- struct mtk_mac *mac = container_of(config, struct mtk_mac,
- phylink_config);
u32 mcr;

mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id));
@@ -806,6 +871,55 @@ static void mtk_mac_link_up(struct phylink_config *config,
mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id));
}

+static void mtk_xgdm_mac_link_up(struct mtk_mac *mac,
+ struct phy_device *phy,
+ unsigned int mode, phy_interface_t interface,
+ int speed, int duplex, bool tx_pause, bool rx_pause)
+{
+ u32 mcr, force_link = 0;
+
+ if (mac->id == MTK_GMAC1_ID)
+ return;
+
+ /* Eliminate the interference(before link-up) caused by PHY noise */
+ mtk_m32(mac->hw, XMAC_LOGIC_RST, 0, MTK_XMAC_LOGIC_RST(mac->id));
+ mdelay(20);
+ mtk_m32(mac->hw, XMAC_GLB_CNTCLR, XMAC_GLB_CNTCLR, MTK_XMAC_CNT_CTRL(mac->id));
+
+ if (mac->interface == PHY_INTERFACE_MODE_INTERNAL || mac->id == MTK_GMAC3_ID)
+ force_link = MTK_XGMAC_FORCE_LINK(mac->id);
+
+ mtk_m32(mac->hw, MTK_XGMAC_FORCE_LINK(mac->id), force_link, MTK_XGMAC_STS(mac->id));
+
+ mcr = mtk_r32(mac->hw, MTK_XMAC_MCR(mac->id));
+ mcr &= ~(XMAC_MCR_FORCE_TX_FC | XMAC_MCR_FORCE_RX_FC | XMAC_MCR_TRX_DISABLE);
+ /* Configure pause modes -
+ * phylink will avoid these for half duplex
+ */
+ if (tx_pause)
+ mcr |= XMAC_MCR_FORCE_TX_FC;
+ if (rx_pause)
+ mcr |= XMAC_MCR_FORCE_RX_FC;
+
+ mtk_w32(mac->hw, mcr, MTK_XMAC_MCR(mac->id));
+}
+
+static void mtk_mac_link_up(struct phylink_config *config,
+ struct phy_device *phy,
+ unsigned int mode, phy_interface_t interface,
+ int speed, int duplex, bool tx_pause, bool rx_pause)
+{
+ struct mtk_mac *mac = container_of(config, struct mtk_mac,
+ phylink_config);
+
+ if (mtk_interface_mode_is_xgmii(interface))
+ mtk_xgdm_mac_link_up(mac, phy, mode, interface, speed, duplex,
+ tx_pause, rx_pause);
+ else
+ mtk_gdm_mac_link_up(mac, phy, mode, interface, speed, duplex,
+ tx_pause, rx_pause);
+}
+
static const struct phylink_mac_ops mtk_phylink_ops = {
.mac_select_pcs = mtk_mac_select_pcs,
.mac_config = mtk_mac_config,
@@ -4605,8 +4719,21 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
phy_interface_zero(mac->phylink_config.supported_interfaces);
__set_bit(PHY_INTERFACE_MODE_INTERNAL,
mac->phylink_config.supported_interfaces);
+ } else if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_USXGMII)) {
+ mac->phylink_config.mac_capabilities |= MAC_5000FD | MAC_10000FD;
+ __set_bit(PHY_INTERFACE_MODE_5GBASER,
+ mac->phylink_config.supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_10GBASER,
+ mac->phylink_config.supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_USXGMII,
+ mac->phylink_config.supported_interfaces);
}

+ if (MTK_HAS_CAPS(mac->hw->soc->caps, MTK_2P5GPHY) &&
+ id == MTK_GMAC2_ID)
+ __set_bit(PHY_INTERFACE_MODE_INTERNAL,
+ mac->phylink_config.supported_interfaces);
+
phylink = phylink_create(&mac->phylink_config,
of_fwnode_handle(mac->of_node),
phy_mode, &mtk_phylink_ops);
@@ -4807,6 +4934,13 @@ static int mtk_probe(struct platform_device *pdev)
return err;
}

+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_USXGMII)) {
+ err = mtk_usxgmii_init(eth);
+
+ if (err)
+ return err;
+ }
+
if (eth->soc->required_pctl) {
eth->pctl = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"mediatek,pctl");
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 403219d987eff..40862a0376fba 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -503,6 +503,21 @@
#define INTF_MODE_RGMII_1000 (TRGMII_MODE | TRGMII_CENTRAL_ALIGNED)
#define INTF_MODE_RGMII_10_100 0

+/* XFI Mac control registers */
+#define MTK_XMAC_BASE(x) (0x12000 + (((x) - 1) * 0x1000))
+#define MTK_XMAC_MCR(x) (MTK_XMAC_BASE(x))
+#define XMAC_MCR_TRX_DISABLE 0xf
+#define XMAC_MCR_FORCE_TX_FC BIT(5)
+#define XMAC_MCR_FORCE_RX_FC BIT(4)
+
+/* XFI Mac logic reset registers */
+#define MTK_XMAC_LOGIC_RST(x) (MTK_XMAC_BASE(x) + 0x10)
+#define XMAC_LOGIC_RST BIT(0)
+
+/* XFI Mac count global control */
+#define MTK_XMAC_CNT_CTRL(x) (MTK_XMAC_BASE(x) + 0x100)
+#define XMAC_GLB_CNTCLR BIT(0)
+
/* GPIO port control registers for GMAC 2*/
#define GPIO_OD33_CTRL8 0x4c0
#define GPIO_BIAS_CTRL 0xed0
@@ -528,6 +543,7 @@
#define SYSCFG0_SGMII_GMAC2 ((3 << 8) & SYSCFG0_SGMII_MASK)
#define SYSCFG0_SGMII_GMAC1_V2 BIT(9)
#define SYSCFG0_SGMII_GMAC2_V2 BIT(8)
+#define SYSCFG0_SGMII_GMAC3_V2 BIT(7)


/* ethernet subsystem clock register */
@@ -560,12 +576,82 @@
#define ETHSYS_DMA_AG_MAP_QDMA BIT(1)
#define ETHSYS_DMA_AG_MAP_PPE BIT(2)

+/* USXGMII subsystem config registers */
+/* Register to control speed */
+#define RG_PHY_TOP_SPEED_CTRL1 0x80C
+#define USXGMII_RATE_UPDATE_MODE BIT(31)
+#define USXGMII_MAC_CK_GATED BIT(29)
+#define USXGMII_IF_FORCE_EN BIT(28)
+#define USXGMII_RATE_ADAPT_MODE GENMASK(10, 8)
+#define USXGMII_RATE_ADAPT_MODE_X1 0
+#define USXGMII_RATE_ADAPT_MODE_X2 1
+#define USXGMII_RATE_ADAPT_MODE_X4 2
+#define USXGMII_RATE_ADAPT_MODE_X10 3
+#define USXGMII_RATE_ADAPT_MODE_X100 4
+#define USXGMII_RATE_ADAPT_MODE_X5 5
+#define USXGMII_RATE_ADAPT_MODE_X50 6
+#define USXGMII_XFI_RX_MODE GENMASK(6, 4)
+#define USXGMII_XFI_RX_MODE_10G 0
+#define USXGMII_XFI_RX_MODE_5G 1
+#define USXGMII_XFI_TX_MODE GENMASK(2, 0)
+#define USXGMII_XFI_TX_MODE_10G 0
+#define USXGMII_XFI_TX_MODE_5G 1
+
+/* Register to control PCS AN */
+#define RG_PCS_AN_CTRL0 0x810
+#define USXGMII_AN_RESTART BIT(31)
+#define USXGMII_AN_SYNC_CNT GENMASK(30, 11)
+#define USXGMII_AN_ENABLE BIT(0)
+
+#define RG_PCS_AN_CTRL2 0x818
+#define USXGMII_LINK_TIMER_IDLE_DETECT GENMASK(29, 20)
+#define USXGMII_LINK_TIMER_COMP_ACK_DETECT GENMASK(19, 10)
+#define USXGMII_LINK_TIMER_AN_RESTART GENMASK(9, 0)
+
+/* Register to read PCS AN status */
+#define RG_PCS_AN_STS0 0x81c
+#define USXGMII_LPA_SPEED_MASK GENMASK(11, 9)
+#define USXGMII_LPA_SPEED_10 0
+#define USXGMII_LPA_SPEED_100 1
+#define USXGMII_LPA_SPEED_1000 2
+#define USXGMII_LPA_SPEED_10000 3
+#define USXGMII_LPA_SPEED_2500 4
+#define USXGMII_LPA_SPEED_5000 5
+#define USXGMII_LPA_DUPLEX BIT(12)
+#define USXGMII_LPA_LINK BIT(15)
+#define USXGMII_LPA_LATCH BIT(31)
+
+/* Register to control USXGMII XFI PLL digital */
+#define XFI_PLL_DIG_GLB8 0x08
+#define RG_XFI_PLL_EN BIT(31)
+
+/* Register to control USXGMII XFI PLL analog */
+#define XFI_PLL_ANA_GLB8 0x108
+#define RG_XFI_PLL_ANA_SWWA 0x02283248
+
/* Infrasys subsystem config registers */
#define INFRA_MISC2 0x70c
#define CO_QPHY_SEL BIT(0)
#define GEPHY_MAC_SEL BIT(1)

+/* Toprgu subsystem config registers */
+#define TOPRGU_SWSYSRST 0x18
+#define SWSYSRST_UNLOCK_KEY GENMASK(31, 24)
+#define SWSYSRST_XFI_PLL_GRST BIT(16)
+#define SWSYSRST_XFI_PEXPT1_GRST BIT(15)
+#define SWSYSRST_XFI_PEXPT0_GRST BIT(14)
+#define SWSYSRST_XFI1_GRST BIT(13)
+#define SWSYSRST_XFI0_GRST BIT(12)
+#define SWSYSRST_SGMII1_GRST BIT(2)
+#define SWSYSRST_SGMII0_GRST BIT(1)
+#define TOPRGU_SWSYSRST_EN 0xFC
+
/* Top misc registers */
+#define TOP_MISC_NETSYS_PCS_MUX 0x84
+#define NETSYS_PCS_MUX_MASK GENMASK(1, 0)
+#define MUX_G2_USXGMII_SEL BIT(1)
+#define MUX_HSGMII1_G1_SEL BIT(0)
+
#define USB_PHY_SWITCH_REG 0x218
#define QPHY_SEL_MASK GENMASK(1, 0)
#define SGMII_QPHY_SEL 0x2
@@ -590,6 +676,8 @@
#define MT7628_SDM_RBCNT (MT7628_SDM_OFFSET + 0x10c)
#define MT7628_SDM_CS_ERR (MT7628_SDM_OFFSET + 0x110)

+/* Debug Purpose Register */
+#define MTK_PSE_FQFC_CFG 0x100
#define MTK_FE_CDM1_FSM 0x220
#define MTK_FE_CDM2_FSM 0x224
#define MTK_FE_CDM3_FSM 0x238
@@ -598,6 +686,11 @@
#define MTK_FE_CDM6_FSM 0x328
#define MTK_FE_GDM1_FSM 0x228
#define MTK_FE_GDM2_FSM 0x22C
+#define MTK_FE_GDM3_FSM 0x23C
+#define MTK_FE_PSE_FREE 0x240
+#define MTK_FE_DROP_FQ 0x244
+#define MTK_FE_DROP_FC 0x248
+#define MTK_FE_DROP_PPE 0x24C

#define MTK_MAC_FSM(x) (0x1010C + ((x) * 0x100))

@@ -944,6 +1037,8 @@ enum mkt_eth_capabilities {
MTK_RGMII_BIT = 0,
MTK_TRGMII_BIT,
MTK_SGMII_BIT,
+ MTK_USXGMII_BIT,
+ MTK_2P5GPHY_BIT,
MTK_ESW_BIT,
MTK_GEPHY_BIT,
MTK_MUX_BIT,
@@ -964,8 +1059,11 @@ enum mkt_eth_capabilities {
MTK_ETH_MUX_GDM1_TO_GMAC1_ESW_BIT,
MTK_ETH_MUX_GMAC2_GMAC0_TO_GEPHY_BIT,
MTK_ETH_MUX_U3_GMAC2_TO_QPHY_BIT,
+ MTK_ETH_MUX_GMAC2_TO_2P5GPHY_BIT,
MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII_BIT,
MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII_BIT,
+ MTK_ETH_MUX_GMAC123_TO_GEPHY_SGMII_BIT,
+ MTK_ETH_MUX_GMAC123_TO_USXGMII_BIT,

/* PATH BITS */
MTK_ETH_PATH_GMAC1_RGMII_BIT,
@@ -973,14 +1071,21 @@ enum mkt_eth_capabilities {
MTK_ETH_PATH_GMAC1_SGMII_BIT,
MTK_ETH_PATH_GMAC2_RGMII_BIT,
MTK_ETH_PATH_GMAC2_SGMII_BIT,
+ MTK_ETH_PATH_GMAC2_2P5GPHY_BIT,
MTK_ETH_PATH_GMAC2_GEPHY_BIT,
+ MTK_ETH_PATH_GMAC3_SGMII_BIT,
MTK_ETH_PATH_GDM1_ESW_BIT,
+ MTK_ETH_PATH_GMAC1_USXGMII_BIT,
+ MTK_ETH_PATH_GMAC2_USXGMII_BIT,
+ MTK_ETH_PATH_GMAC3_USXGMII_BIT,
};

/* Supported hardware group on SoCs */
#define MTK_RGMII BIT_ULL(MTK_RGMII_BIT)
#define MTK_TRGMII BIT_ULL(MTK_TRGMII_BIT)
#define MTK_SGMII BIT_ULL(MTK_SGMII_BIT)
+#define MTK_USXGMII BIT_ULL(MTK_USXGMII_BIT)
+#define MTK_2P5GPHY BIT_ULL(MTK_2P5GPHY_BIT)
#define MTK_ESW BIT_ULL(MTK_ESW_BIT)
#define MTK_GEPHY BIT_ULL(MTK_GEPHY_BIT)
#define MTK_MUX BIT_ULL(MTK_MUX_BIT)
@@ -1003,10 +1108,16 @@ enum mkt_eth_capabilities {
BIT_ULL(MTK_ETH_MUX_GMAC2_GMAC0_TO_GEPHY_BIT)
#define MTK_ETH_MUX_U3_GMAC2_TO_QPHY \
BIT_ULL(MTK_ETH_MUX_U3_GMAC2_TO_QPHY_BIT)
+#define MTK_ETH_MUX_GMAC2_TO_2P5GPHY \
+ BIT_ULL(MTK_ETH_MUX_GMAC2_TO_2P5GPHY_BIT)
#define MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII \
BIT_ULL(MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII_BIT)
#define MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII \
BIT_ULL(MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII_BIT)
+#define MTK_ETH_MUX_GMAC123_TO_GEPHY_SGMII \
+ BIT_ULL(MTK_ETH_MUX_GMAC123_TO_GEPHY_SGMII_BIT)
+#define MTK_ETH_MUX_GMAC123_TO_USXGMII \
+ BIT_ULL(MTK_ETH_MUX_GMAC123_TO_USXGMII_BIT)

/* Supported path present on SoCs */
#define MTK_ETH_PATH_GMAC1_RGMII BIT_ULL(MTK_ETH_PATH_GMAC1_RGMII_BIT)
@@ -1014,8 +1125,13 @@ enum mkt_eth_capabilities {
#define MTK_ETH_PATH_GMAC1_SGMII BIT_ULL(MTK_ETH_PATH_GMAC1_SGMII_BIT)
#define MTK_ETH_PATH_GMAC2_RGMII BIT_ULL(MTK_ETH_PATH_GMAC2_RGMII_BIT)
#define MTK_ETH_PATH_GMAC2_SGMII BIT_ULL(MTK_ETH_PATH_GMAC2_SGMII_BIT)
+#define MTK_ETH_PATH_GMAC2_2P5GPHY BIT_ULL(MTK_ETH_PATH_GMAC2_2P5GPHY_BIT)
#define MTK_ETH_PATH_GMAC2_GEPHY BIT_ULL(MTK_ETH_PATH_GMAC2_GEPHY_BIT)
+#define MTK_ETH_PATH_GMAC3_SGMII BIT_ULL(MTK_ETH_PATH_GMAC3_SGMII_BIT)
#define MTK_ETH_PATH_GDM1_ESW BIT_ULL(MTK_ETH_PATH_GDM1_ESW_BIT)
+#define MTK_ETH_PATH_GMAC1_USXGMII BIT_ULL(MTK_ETH_PATH_GMAC1_USXGMII_BIT)
+#define MTK_ETH_PATH_GMAC2_USXGMII BIT_ULL(MTK_ETH_PATH_GMAC2_USXGMII_BIT)
+#define MTK_ETH_PATH_GMAC3_USXGMII BIT_ULL(MTK_ETH_PATH_GMAC3_USXGMII_BIT)

#define MTK_GMAC1_RGMII (MTK_ETH_PATH_GMAC1_RGMII | MTK_RGMII)
#define MTK_GMAC1_TRGMII (MTK_ETH_PATH_GMAC1_TRGMII | MTK_TRGMII)
@@ -1023,7 +1139,12 @@ enum mkt_eth_capabilities {
#define MTK_GMAC2_RGMII (MTK_ETH_PATH_GMAC2_RGMII | MTK_RGMII)
#define MTK_GMAC2_SGMII (MTK_ETH_PATH_GMAC2_SGMII | MTK_SGMII)
#define MTK_GMAC2_GEPHY (MTK_ETH_PATH_GMAC2_GEPHY | MTK_GEPHY)
+#define MTK_GMAC2_2P5GPHY (MTK_ETH_PATH_GMAC2_2P5GPHY | MTK_2P5GPHY)
+#define MTK_GMAC3_SGMII (MTK_ETH_PATH_GMAC3_SGMII | MTK_SGMII)
#define MTK_GDM1_ESW (MTK_ETH_PATH_GDM1_ESW | MTK_ESW)
+#define MTK_GMAC1_USXGMII (MTK_ETH_PATH_GMAC1_USXGMII | MTK_USXGMII)
+#define MTK_GMAC2_USXGMII (MTK_ETH_PATH_GMAC2_USXGMII | MTK_USXGMII)
+#define MTK_GMAC3_USXGMII (MTK_ETH_PATH_GMAC3_USXGMII | MTK_USXGMII)

/* MUXes present on SoCs */
/* 0: GDM1 -> GMAC1, 1: GDM1 -> ESW */
@@ -1042,10 +1163,20 @@ enum mkt_eth_capabilities {
(MTK_ETH_MUX_GMAC1_GMAC2_TO_SGMII_RGMII | MTK_MUX | \
MTK_SHARED_SGMII)

+/* 2: GMAC2 -> XGMII */
+#define MTK_MUX_GMAC2_TO_2P5GPHY \
+ (MTK_ETH_MUX_GMAC2_TO_2P5GPHY | MTK_MUX | MTK_INFRA)
+
/* 0: GMACx -> GEPHY, 1: GMACx -> SGMII where x is 1 or 2 */
#define MTK_MUX_GMAC12_TO_GEPHY_SGMII \
(MTK_ETH_MUX_GMAC12_TO_GEPHY_SGMII | MTK_MUX)

+#define MTK_MUX_GMAC123_TO_GEPHY_SGMII \
+ (MTK_ETH_MUX_GMAC123_TO_GEPHY_SGMII | MTK_MUX)
+
+#define MTK_MUX_GMAC123_TO_USXGMII \
+ (MTK_ETH_MUX_GMAC123_TO_USXGMII | MTK_MUX | MTK_INFRA)
+
#define MTK_HAS_CAPS(caps, _x) (((caps) & (_x)) == (_x))

#define MT7621_CAPS (MTK_GMAC1_RGMII | MTK_GMAC1_TRGMII | \
@@ -1077,8 +1208,12 @@ enum mkt_eth_capabilities {
MTK_MUX_GMAC12_TO_GEPHY_SGMII | MTK_QDMA | \
MTK_RSTCTRL_PPE1 | MTK_SRAM)

-#define MT7988_CAPS (MTK_36BIT_DMA | MTK_GDM1_ESW | MTK_QDMA | \
- MTK_RSTCTRL_PPE1 | MTK_RSTCTRL_PPE2 | MTK_SRAM)
+#define MT7988_CAPS (MTK_36BIT_DMA | MTK_GDM1_ESW | MTK_GMAC1_SGMII | \
+ MTK_GMAC2_2P5GPHY | MTK_GMAC2_SGMII | MTK_GMAC2_USXGMII | \
+ MTK_GMAC3_SGMII | MTK_GMAC3_USXGMII | \
+ MTK_MUX_GMAC123_TO_GEPHY_SGMII | \
+ MTK_MUX_GMAC123_TO_USXGMII | MTK_MUX_GMAC2_TO_2P5GPHY | \
+ MTK_QDMA | MTK_RSTCTRL_PPE1 | MTK_RSTCTRL_PPE2 | MTK_SRAM)

struct mtk_tx_dma_desc_info {
dma_addr_t addr;
@@ -1188,6 +1323,23 @@ struct mtk_soc_data {
/* currently no SoC has more than 3 macs */
#define MTK_MAX_DEVS 3

+/* struct mtk_usxgmii_pcs - This structure holds each usxgmii regmap and
+ * associated data
+ * @regmap: The register map pointing at the range used to setup
+ * USXGMII modes
+ * @interface: Currently selected interface mode
+ * @id: The element is used to record the index of PCS
+ * @pcs: Phylink PCS structure
+ */
+struct mtk_usxgmii_pcs {
+ struct mtk_eth *eth;
+ struct regmap *regmap;
+ struct phylink_pcs *wrapped_sgmii_pcs;
+ phy_interface_t interface;
+ u8 id;
+ struct phylink_pcs pcs;
+};
+
/* struct mtk_eth - This is the main datasructure for holding the state
* of the driver
* @dev: The device pointer
@@ -1208,6 +1360,12 @@ struct mtk_soc_data {
* @infra: The register map pointing at the range used to setup
* SGMII and GePHY path
* @sgmii_pcs: Pointers to mtk-pcs-lynxi phylink_pcs instances
+ * @sgmii_wrapped_pcs: Pointers to NETSYSv3 wrapper PCS instances
+ * @usxgmii_pll: The register map pointing at the range used to control
+ * the USXGMII SerDes PLL
+ * @regmap_pextp: The register map pointing at the range used to setup
+ * PHYA
+ * @usxgmii_pcs: Pointer to array of pointers to struct for USXGMII PCS
* @pctl: The register map pointing at the range used to setup
* GMAC port drive/slew values
* @dma_refcnt: track how many netdevs are using the DMA engine
@@ -1251,6 +1409,10 @@ struct mtk_eth {
struct regmap *ethsys;
struct regmap *infra;
struct phylink_pcs *sgmii_pcs[MTK_MAX_DEVS];
+ struct regmap *toprgu;
+ struct regmap *usxgmii_pll;
+ struct regmap *regmap_pextp[MTK_MAX_DEVS];
+ struct mtk_usxgmii_pcs *usxgmii_pcs[MTK_MAX_DEVS];
struct regmap *pctl;
bool hwlro;
refcount_t dma_refcnt;
@@ -1421,6 +1583,19 @@ static inline u32 mtk_get_ib2_multicast_mask(struct mtk_eth *eth)
return MTK_FOE_IB2_MULTICAST;
}

+static inline bool mtk_interface_mode_is_xgmii(phy_interface_t interface)
+{
+ switch (interface) {
+ case PHY_INTERFACE_MODE_INTERNAL:
+ case PHY_INTERFACE_MODE_USXGMII:
+ case PHY_INTERFACE_MODE_10GBASER:
+ case PHY_INTERFACE_MODE_5GBASER:
+ return true;
+ default:
+ return false;
+ }
+}
+
/* read the hardware status register */
void mtk_stats_update_mac(struct mtk_mac *mac);

@@ -1429,8 +1604,10 @@ u32 mtk_r32(struct mtk_eth *eth, unsigned reg);
u32 mtk_m32(struct mtk_eth *eth, u32 mask, u32 set, unsigned int reg);

int mtk_gmac_sgmii_path_setup(struct mtk_eth *eth, int mac_id);
+int mtk_gmac_2p5gphy_path_setup(struct mtk_eth *eth, int mac_id);
int mtk_gmac_gephy_path_setup(struct mtk_eth *eth, int mac_id);
int mtk_gmac_rgmii_path_setup(struct mtk_eth *eth, int mac_id);
+int mtk_gmac_usxgmii_path_setup(struct mtk_eth *eth, int mac_id);

int mtk_eth_offload_init(struct mtk_eth *eth);
int mtk_eth_setup_tc(struct net_device *dev, enum tc_setup_type type,
@@ -1440,5 +1617,63 @@ int mtk_flow_offload_cmd(struct mtk_eth *eth, struct flow_cls_offload *cls,
void mtk_flow_offload_cleanup(struct mtk_eth *eth, struct list_head *list);
void mtk_eth_set_dma_device(struct mtk_eth *eth, struct device *dma_dev);

+static inline int mtk_mac2xgmii_id(struct mtk_eth *eth, int mac_id)
+{
+ int xgmii_id = mac_id;
+
+ if (mtk_is_netsys_v3_or_greater(eth)) {
+ switch (mac_id) {
+ case MTK_GMAC1_ID:
+ case MTK_GMAC2_ID:
+ xgmii_id = 1;
+ break;
+ case MTK_GMAC3_ID:
+ xgmii_id = 0;
+ break;
+ default:
+ xgmii_id = -1;
+ }
+ }
+
+ return MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII) ? 0 : xgmii_id;
+}
+
+static inline int mtk_xgmii2mac_id(struct mtk_eth *eth, int xgmii_id)
+{
+ int mac_id = xgmii_id;
+
+ if (mtk_is_netsys_v3_or_greater(eth)) {
+ switch (xgmii_id) {
+ case 0:
+ mac_id = 2;
+ break;
+ case 1:
+ mac_id = 1;
+ break;
+ default:
+ mac_id = -1;
+ }
+ }
+
+ return mac_id;
+}
+
+#ifdef CONFIG_NET_MEDIATEK_SOC_USXGMII
+struct phylink_pcs *mtk_sgmii_wrapper_select_pcs(struct mtk_eth *eth, int id);
+struct phylink_pcs *mtk_usxgmii_select_pcs(struct mtk_eth *eth, int id);
+int mtk_usxgmii_init(struct mtk_eth *eth);
+#else
+static inline struct phylink_pcs *mtk_sgmii_wrapper_select_pcs(struct mtk_eth *eth, int id)
+{
+ return NULL;
+}
+
+static inline struct phylink_pcs *mtk_usxgmii_select_pcs(struct mtk_eth *eth, int id)
+{
+ return NULL;
+}
+
+static inline int mtk_usxgmii_init(struct mtk_eth *eth) { return 0; }
+#endif /* NET_MEDIATEK_SOC_USXGMII */

#endif /* MTK_ETH_H */
diff --git a/drivers/net/ethernet/mediatek/mtk_usxgmii.c b/drivers/net/ethernet/mediatek/mtk_usxgmii.c
new file mode 100644
index 0000000000000..0a7dfdec150a5
--- /dev/null
+++ b/drivers/net/ethernet/mediatek/mtk_usxgmii.c
@@ -0,0 +1,709 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023 MediaTek Inc.
+ * Author: Henry Yen <henry.yen@xxxxxxxxxxxx>
+ * Daniel Golle <daniel@xxxxxxxxxxxxxx>
+ */
+
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include "mtk_eth_soc.h"
+
+static struct mtk_usxgmii_pcs *pcs_to_mtk_usxgmii_pcs(struct phylink_pcs *pcs)
+{
+ return container_of(pcs, struct mtk_usxgmii_pcs, pcs);
+}
+
+static int mtk_xfi_pextp_init(struct mtk_eth *eth)
+{
+ struct device *dev = eth->dev;
+ struct device_node *r = dev->of_node;
+ struct device_node *np;
+ int i;
+
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
+ np = of_parse_phandle(r, "mediatek,xfi-pextp", i);
+ if (!np)
+ break;
+
+ eth->regmap_pextp[i] = syscon_node_to_regmap(np);
+ if (IS_ERR(eth->regmap_pextp[i]))
+ return PTR_ERR(eth->regmap_pextp[i]);
+ }
+
+ return 0;
+}
+
+static int mtk_xfi_pll_init(struct mtk_eth *eth)
+{
+ struct device_node *r = eth->dev->of_node;
+ struct device_node *np;
+
+ np = of_parse_phandle(r, "mediatek,xfi-pll", 0);
+ if (!np)
+ return -1;
+
+ eth->usxgmii_pll = syscon_node_to_regmap(np);
+ if (IS_ERR(eth->usxgmii_pll))
+ return PTR_ERR(eth->usxgmii_pll);
+
+ return 0;
+}
+
+static int mtk_toprgu_init(struct mtk_eth *eth)
+{
+ struct device_node *r = eth->dev->of_node;
+ struct device_node *np;
+
+ np = of_parse_phandle(r, "mediatek,toprgu", 0);
+ if (!np)
+ return -1;
+
+ eth->toprgu = syscon_node_to_regmap(np);
+ if (IS_ERR(eth->toprgu))
+ return PTR_ERR(eth->toprgu);
+
+ return 0;
+}
+
+static int mtk_xfi_pll_enable(struct mtk_eth *eth)
+{
+ u32 val = 0;
+
+ if (!eth->usxgmii_pll)
+ return -EINVAL;
+
+ /* Add software workaround for USXGMII PLL TCL issue */
+ regmap_write(eth->usxgmii_pll, XFI_PLL_ANA_GLB8, RG_XFI_PLL_ANA_SWWA);
+
+ regmap_read(eth->usxgmii_pll, XFI_PLL_DIG_GLB8, &val);
+ val |= RG_XFI_PLL_EN;
+ regmap_write(eth->usxgmii_pll, XFI_PLL_DIG_GLB8, val);
+
+ return 0;
+}
+
+static void mtk_usxgmii_setup_phya(struct regmap *pextp, phy_interface_t interface, int id)
+{
+ bool is_10g = (interface == PHY_INTERFACE_MODE_10GBASER ||
+ interface == PHY_INTERFACE_MODE_USXGMII);
+ bool is_2p5g = (interface == PHY_INTERFACE_MODE_2500BASEX);
+ bool is_5g = (interface == PHY_INTERFACE_MODE_5GBASER);
+
+ /* Setup operation mode */
+ if (is_10g)
+ regmap_write(pextp, 0x9024, 0x00C9071C);
+ else
+ regmap_write(pextp, 0x9024, 0x00D9071C);
+
+ if (is_5g)
+ regmap_write(pextp, 0x2020, 0xAAA5A5AA);
+ else
+ regmap_write(pextp, 0x2020, 0xAA8585AA);
+
+ if (is_2p5g || is_5g || is_10g) {
+ regmap_write(pextp, 0x2030, 0x0C020707);
+ regmap_write(pextp, 0x2034, 0x0E050F0F);
+ regmap_write(pextp, 0x2040, 0x00140032);
+ } else {
+ regmap_write(pextp, 0x2030, 0x0C020207);
+ regmap_write(pextp, 0x2034, 0x0E05050F);
+ regmap_write(pextp, 0x2040, 0x00200032);
+ }
+
+ if (is_2p5g || is_10g)
+ regmap_write(pextp, 0x50F0, 0x00C014AA);
+ else if (is_5g)
+ regmap_write(pextp, 0x50F0, 0x00C018AA);
+ else
+ regmap_write(pextp, 0x50F0, 0x00C014BA);
+
+ if (is_5g) {
+ regmap_write(pextp, 0x50E0, 0x3777812B);
+ regmap_write(pextp, 0x506C, 0x005C9CFF);
+ regmap_write(pextp, 0x5070, 0x9DFAFAFA);
+ regmap_write(pextp, 0x5074, 0x273F3F3F);
+ regmap_write(pextp, 0x5078, 0xA8883868);
+ regmap_write(pextp, 0x507C, 0x14661466);
+ } else {
+ regmap_write(pextp, 0x50E0, 0x3777C12B);
+ regmap_write(pextp, 0x506C, 0x005F9CFF);
+ regmap_write(pextp, 0x5070, 0x9D9DFAFA);
+ regmap_write(pextp, 0x5074, 0x27273F3F);
+ regmap_write(pextp, 0x5078, 0xA7883C68);
+ regmap_write(pextp, 0x507C, 0x11661166);
+ }
+
+ if (is_2p5g || is_10g) {
+ regmap_write(pextp, 0x5080, 0x0E000AAF);
+ regmap_write(pextp, 0x5084, 0x08080D0D);
+ regmap_write(pextp, 0x5088, 0x02030909);
+ } else if (is_5g) {
+ regmap_write(pextp, 0x5080, 0x0E001ABF);
+ regmap_write(pextp, 0x5084, 0x080B0D0D);
+ regmap_write(pextp, 0x5088, 0x02050909);
+ } else {
+ regmap_write(pextp, 0x5080, 0x0E000EAF);
+ regmap_write(pextp, 0x5084, 0x08080E0D);
+ regmap_write(pextp, 0x5088, 0x02030B09);
+ }
+
+ if (is_5g) {
+ regmap_write(pextp, 0x50E4, 0x0C000000);
+ regmap_write(pextp, 0x50E8, 0x04000000);
+ } else {
+ regmap_write(pextp, 0x50E4, 0x0C0C0000);
+ regmap_write(pextp, 0x50E8, 0x04040000);
+ }
+
+ if (is_2p5g || mtk_interface_mode_is_xgmii(interface))
+ regmap_write(pextp, 0x50EC, 0x0F0F0C06);
+ else
+ regmap_write(pextp, 0x50EC, 0x0F0F0606);
+
+ if (is_5g) {
+ regmap_write(pextp, 0x50A8, 0x50808C8C);
+ regmap_write(pextp, 0x6004, 0x18000000);
+ } else {
+ regmap_write(pextp, 0x50A8, 0x506E8C8C);
+ regmap_write(pextp, 0x6004, 0x18190000);
+ }
+
+ if (is_10g)
+ regmap_write(pextp, 0x00F8, 0x01423342);
+ else if (is_5g)
+ regmap_write(pextp, 0x00F8, 0x00A132A1);
+ else if (is_2p5g)
+ regmap_write(pextp, 0x00F8, 0x009C329C);
+ else
+ regmap_write(pextp, 0x00F8, 0x00FA32FA);
+
+ /* Force SGDT_OUT off and select PCS */
+ if (mtk_interface_mode_is_xgmii(interface))
+ regmap_write(pextp, 0x00F4, 0x80201F20);
+ else
+ regmap_write(pextp, 0x00F4, 0x80201F21);
+
+ /* Force GLB_CKDET_OUT */
+ regmap_write(pextp, 0x0030, 0x00050C00);
+
+ /* Force AEQ on */
+ regmap_write(pextp, 0x0070, 0x02002800);
+ ndelay(1020);
+
+ /* Setup DA default value */
+ regmap_write(pextp, 0x30B0, 0x00000020);
+ regmap_write(pextp, 0x3028, 0x00008A01);
+ regmap_write(pextp, 0x302C, 0x0000A884);
+ regmap_write(pextp, 0x3024, 0x00083002);
+ if (mtk_interface_mode_is_xgmii(interface)) {
+ regmap_write(pextp, 0x3010, 0x00022220);
+ regmap_write(pextp, 0x5064, 0x0F020A01);
+ regmap_write(pextp, 0x50B4, 0x06100600);
+ if (interface == PHY_INTERFACE_MODE_USXGMII)
+ regmap_write(pextp, 0x3048, 0x40704000);
+ else
+ regmap_write(pextp, 0x3048, 0x47684100);
+ } else {
+ regmap_write(pextp, 0x3010, 0x00011110);
+ regmap_write(pextp, 0x3048, 0x40704000);
+ }
+
+ if (!mtk_interface_mode_is_xgmii(interface) && !is_2p5g)
+ regmap_write(pextp, 0x3064, 0x0000C000);
+
+ if (interface == PHY_INTERFACE_MODE_USXGMII) {
+ regmap_write(pextp, 0x3050, 0xA8000000);
+ regmap_write(pextp, 0x3054, 0x000000AA);
+ } else if (mtk_interface_mode_is_xgmii(interface)) {
+ regmap_write(pextp, 0x3050, 0x00000000);
+ regmap_write(pextp, 0x3054, 0x00000000);
+ } else {
+ regmap_write(pextp, 0x3050, 0xA8000000);
+ regmap_write(pextp, 0x3054, 0x000000AA);
+ }
+
+ if (mtk_interface_mode_is_xgmii(interface))
+ regmap_write(pextp, 0x306C, 0x00000F00);
+ else if (is_2p5g)
+ regmap_write(pextp, 0x306C, 0x22000F00);
+ else
+ regmap_write(pextp, 0x306C, 0x20200F00);
+
+ if (interface == PHY_INTERFACE_MODE_10GBASER && id == 0)
+ regmap_write(pextp, 0xA008, 0x0007B400);
+
+ if (mtk_interface_mode_is_xgmii(interface))
+ regmap_write(pextp, 0xA060, 0x00040000);
+ else
+ regmap_write(pextp, 0xA060, 0x00050000);
+
+ if (is_10g)
+ regmap_write(pextp, 0x90D0, 0x00000001);
+ else if (is_5g)
+ regmap_write(pextp, 0x90D0, 0x00000003);
+ else if (is_2p5g)
+ regmap_write(pextp, 0x90D0, 0x00000005);
+ else
+ regmap_write(pextp, 0x90D0, 0x00000007);
+
+ /* Release reset */
+ regmap_write(pextp, 0x0070, 0x0200E800);
+ usleep_range(150, 500);
+
+ /* Switch to P0 */
+ regmap_write(pextp, 0x0070, 0x0200C111);
+ ndelay(1020);
+ regmap_write(pextp, 0x0070, 0x0200C101);
+ usleep_range(15, 50);
+
+ if (mtk_interface_mode_is_xgmii(interface)) {
+ /* Switch to Gen3 */
+ regmap_write(pextp, 0x0070, 0x0202C111);
+ } else {
+ /* Switch to Gen2 */
+ regmap_write(pextp, 0x0070, 0x0201C111);
+ }
+ ndelay(1020);
+ if (mtk_interface_mode_is_xgmii(interface))
+ regmap_write(pextp, 0x0070, 0x0202C101);
+ else
+ regmap_write(pextp, 0x0070, 0x0201C101);
+ usleep_range(100, 500);
+ regmap_write(pextp, 0x30B0, 0x00000030);
+ if (mtk_interface_mode_is_xgmii(interface))
+ regmap_write(pextp, 0x00F4, 0x80201F00);
+ else
+ regmap_write(pextp, 0x00F4, 0x80201F01);
+
+ regmap_write(pextp, 0x3040, 0x30000000);
+ usleep_range(400, 1000);
+}
+
+static void mtk_usxgmii_reset(struct mtk_eth *eth, int id)
+{
+ u32 toggle, val;
+
+ if (id >= MTK_MAX_DEVS || !eth->toprgu)
+ return;
+
+ switch (id) {
+ case 0:
+ toggle = SWSYSRST_XFI_PEXPT0_GRST | SWSYSRST_XFI0_GRST |
+ SWSYSRST_SGMII0_GRST;
+ break;
+ case 1:
+ toggle = SWSYSRST_XFI_PEXPT1_GRST | SWSYSRST_XFI1_GRST |
+ SWSYSRST_SGMII1_GRST;
+ break;
+ default:
+ return;
+ }
+
+ /* Enable software reset */
+ regmap_set_bits(eth->toprgu, TOPRGU_SWSYSRST_EN, toggle);
+
+ /* Assert USXGMII reset */
+ regmap_set_bits(eth->toprgu, TOPRGU_SWSYSRST,
+ FIELD_PREP(SWSYSRST_UNLOCK_KEY, 0x88) | toggle);
+
+ usleep_range(100, 500);
+
+ /* De-assert USXGMII reset */
+ regmap_read(eth->toprgu, TOPRGU_SWSYSRST, &val);
+ val |= FIELD_PREP(SWSYSRST_UNLOCK_KEY, 0x88);
+ val &= ~toggle;
+ regmap_write(eth->toprgu, TOPRGU_SWSYSRST, val);
+
+ /* Disable software reset */
+ regmap_clear_bits(eth->toprgu, TOPRGU_SWSYSRST_EN, toggle);
+
+ mdelay(10);
+}
+
+/* As the USXGMII PHYA is shared with the 1000Base-X/2500Base-X/Cisco SGMII unit
+ * the psc-mtk-lynxi instance needs to be wrapped, so that calls to .pcs_config
+ * also trigger an initial reset and subsequent configuration of the PHYA.
+ */
+struct mtk_sgmii_wrapper_pcs {
+ struct mtk_eth *eth;
+ struct phylink_pcs *wrapped_pcs;
+ u8 id;
+ struct phylink_pcs pcs;
+};
+
+static int mtk_sgmii_wrapped_pcs_config(struct phylink_pcs *pcs,
+ unsigned int neg_mode,
+ phy_interface_t interface,
+ const unsigned long *advertising,
+ bool permit_pause_to_mac)
+{
+ struct mtk_sgmii_wrapper_pcs *wp = container_of(pcs, struct mtk_sgmii_wrapper_pcs, pcs);
+ bool full_reconf;
+ int ret;
+
+ full_reconf = interface != wp->eth->usxgmii_pcs[wp->id]->interface;
+ if (full_reconf) {
+ mtk_xfi_pll_enable(wp->eth);
+ mtk_usxgmii_reset(wp->eth, wp->id);
+ }
+
+ ret = wp->wrapped_pcs->ops->pcs_config(wp->wrapped_pcs, neg_mode, interface,
+ advertising, permit_pause_to_mac);
+
+ if (full_reconf)
+ mtk_usxgmii_setup_phya(wp->eth->regmap_pextp[wp->id], interface, wp->id);
+
+ wp->eth->usxgmii_pcs[wp->id]->interface = interface;
+
+ return ret;
+}
+
+static void mtk_sgmii_wrapped_pcs_get_state(struct phylink_pcs *pcs,
+ struct phylink_link_state *state)
+{
+ struct mtk_sgmii_wrapper_pcs *wp = container_of(pcs, struct mtk_sgmii_wrapper_pcs, pcs);
+
+ return wp->wrapped_pcs->ops->pcs_get_state(wp->wrapped_pcs, state);
+}
+
+static void mtk_sgmii_wrapped_pcs_an_restart(struct phylink_pcs *pcs)
+{
+ struct mtk_sgmii_wrapper_pcs *wp = container_of(pcs, struct mtk_sgmii_wrapper_pcs, pcs);
+
+ wp->wrapped_pcs->ops->pcs_an_restart(wp->wrapped_pcs);
+}
+
+static void mtk_sgmii_wrapped_pcs_link_up(struct phylink_pcs *pcs,
+ unsigned int neg_mode,
+ phy_interface_t interface, int speed,
+ int duplex)
+{
+ struct mtk_sgmii_wrapper_pcs *wp = container_of(pcs, struct mtk_sgmii_wrapper_pcs, pcs);
+
+ wp->wrapped_pcs->ops->pcs_link_up(wp->wrapped_pcs, neg_mode, interface, speed, duplex);
+}
+
+static void mtk_sgmii_wrapped_pcs_disable(struct phylink_pcs *pcs)
+{
+ struct mtk_sgmii_wrapper_pcs *wp = container_of(pcs, struct mtk_sgmii_wrapper_pcs, pcs);
+
+ wp->wrapped_pcs->ops->pcs_disable(wp->wrapped_pcs);
+
+ wp->eth->usxgmii_pcs[wp->id]->interface = PHY_INTERFACE_MODE_NA;
+}
+
+static const struct phylink_pcs_ops mtk_sgmii_wrapped_pcs_ops = {
+ .pcs_get_state = mtk_sgmii_wrapped_pcs_get_state,
+ .pcs_config = mtk_sgmii_wrapped_pcs_config,
+ .pcs_an_restart = mtk_sgmii_wrapped_pcs_an_restart,
+ .pcs_link_up = mtk_sgmii_wrapped_pcs_link_up,
+ .pcs_disable = mtk_sgmii_wrapped_pcs_disable,
+};
+
+static int mtk_sgmii_wrapper_init(struct mtk_eth *eth)
+{
+ struct mtk_sgmii_wrapper_pcs *wp;
+ int i;
+
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
+ if (!eth->sgmii_pcs[i])
+ continue;
+
+ if (!eth->usxgmii_pcs[i])
+ continue;
+
+ /* Make sure all PCS ops are supported by wrapped PCS */
+ if (!eth->sgmii_pcs[i]->ops->pcs_get_state ||
+ !eth->sgmii_pcs[i]->ops->pcs_config ||
+ !eth->sgmii_pcs[i]->ops->pcs_an_restart ||
+ !eth->sgmii_pcs[i]->ops->pcs_link_up ||
+ !eth->sgmii_pcs[i]->ops->pcs_disable)
+ return -EOPNOTSUPP;
+
+ wp = devm_kzalloc(eth->dev, sizeof(*wp), GFP_KERNEL);
+ if (!wp)
+ return -ENOMEM;
+
+ wp->wrapped_pcs = eth->sgmii_pcs[i];
+ wp->id = i;
+ wp->pcs.neg_mode = true;
+ wp->pcs.poll = true;
+ wp->pcs.ops = &mtk_sgmii_wrapped_pcs_ops;
+ wp->eth = eth;
+
+ eth->usxgmii_pcs[i]->wrapped_sgmii_pcs = &wp->pcs;
+ }
+
+ return 0;
+}
+
+struct phylink_pcs *mtk_sgmii_wrapper_select_pcs(struct mtk_eth *eth, int mac_id)
+{
+ u32 xgmii_id = mtk_mac2xgmii_id(eth, mac_id);
+
+ if (!eth->usxgmii_pcs[xgmii_id])
+ return NULL;
+
+ return eth->usxgmii_pcs[xgmii_id]->wrapped_sgmii_pcs;
+}
+
+static int mtk_usxgmii_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
+ phy_interface_t interface,
+ const unsigned long *advertising,
+ bool permit_pause_to_mac)
+{
+ struct mtk_usxgmii_pcs *mpcs = pcs_to_mtk_usxgmii_pcs(pcs);
+ struct mtk_eth *eth = mpcs->eth;
+ struct regmap *pextp = eth->regmap_pextp[mpcs->id];
+ unsigned int an_ctrl = 0, link_timer = 0, xfi_mode = 0, adapt_mode = 0;
+ bool mode_changed = false;
+
+ if (!pextp)
+ return -ENODEV;
+
+ if (interface == PHY_INTERFACE_MODE_USXGMII) {
+ an_ctrl = FIELD_PREP(USXGMII_AN_SYNC_CNT, 0x1FF) |
+ (neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED) ?
+ USXGMII_AN_ENABLE : 0;
+ link_timer = FIELD_PREP(USXGMII_LINK_TIMER_IDLE_DETECT, 0x7B) |
+ FIELD_PREP(USXGMII_LINK_TIMER_COMP_ACK_DETECT, 0x7B) |
+ FIELD_PREP(USXGMII_LINK_TIMER_AN_RESTART, 0x7B);
+ xfi_mode = FIELD_PREP(USXGMII_XFI_RX_MODE, USXGMII_XFI_RX_MODE_10G) |
+ FIELD_PREP(USXGMII_XFI_TX_MODE, USXGMII_XFI_TX_MODE_10G);
+ } else if (interface == PHY_INTERFACE_MODE_10GBASER) {
+ an_ctrl = FIELD_PREP(USXGMII_AN_SYNC_CNT, 0x1FF);
+ link_timer = FIELD_PREP(USXGMII_LINK_TIMER_IDLE_DETECT, 0x7B) |
+ FIELD_PREP(USXGMII_LINK_TIMER_COMP_ACK_DETECT, 0x7B) |
+ FIELD_PREP(USXGMII_LINK_TIMER_AN_RESTART, 0x7B);
+ xfi_mode = FIELD_PREP(USXGMII_XFI_RX_MODE, USXGMII_XFI_RX_MODE_10G) |
+ FIELD_PREP(USXGMII_XFI_TX_MODE, USXGMII_XFI_TX_MODE_10G);
+ adapt_mode = USXGMII_RATE_UPDATE_MODE;
+ } else if (interface == PHY_INTERFACE_MODE_5GBASER) {
+ an_ctrl = FIELD_PREP(USXGMII_AN_SYNC_CNT, 0xFF);
+ link_timer = FIELD_PREP(USXGMII_LINK_TIMER_IDLE_DETECT, 0x3D) |
+ FIELD_PREP(USXGMII_LINK_TIMER_COMP_ACK_DETECT, 0x3D) |
+ FIELD_PREP(USXGMII_LINK_TIMER_AN_RESTART, 0x3D);
+ xfi_mode = FIELD_PREP(USXGMII_XFI_RX_MODE, USXGMII_XFI_RX_MODE_5G) |
+ FIELD_PREP(USXGMII_XFI_TX_MODE, USXGMII_XFI_TX_MODE_5G);
+ adapt_mode = USXGMII_RATE_UPDATE_MODE;
+ } else {
+ return -EINVAL;
+ }
+
+ adapt_mode |= FIELD_PREP(USXGMII_RATE_ADAPT_MODE, USXGMII_RATE_ADAPT_MODE_X1);
+
+ if (mpcs->interface != interface) {
+ mpcs->interface = interface;
+ mode_changed = true;
+ }
+
+ mtk_xfi_pll_enable(eth);
+ mtk_usxgmii_reset(eth, mpcs->id);
+
+ /* Setup USXGMII AN ctrl */
+ regmap_update_bits(mpcs->regmap, RG_PCS_AN_CTRL0,
+ USXGMII_AN_SYNC_CNT | USXGMII_AN_ENABLE,
+ an_ctrl);
+
+ regmap_update_bits(mpcs->regmap, RG_PCS_AN_CTRL2,
+ USXGMII_LINK_TIMER_IDLE_DETECT |
+ USXGMII_LINK_TIMER_COMP_ACK_DETECT |
+ USXGMII_LINK_TIMER_AN_RESTART,
+ link_timer);
+
+ /* Gated MAC CK */
+ regmap_update_bits(mpcs->regmap, RG_PHY_TOP_SPEED_CTRL1,
+ USXGMII_MAC_CK_GATED, USXGMII_MAC_CK_GATED);
+
+ /* Enable interface force mode */
+ regmap_update_bits(mpcs->regmap, RG_PHY_TOP_SPEED_CTRL1,
+ USXGMII_IF_FORCE_EN, USXGMII_IF_FORCE_EN);
+
+ /* Setup USXGMII adapt mode */
+ regmap_update_bits(mpcs->regmap, RG_PHY_TOP_SPEED_CTRL1,
+ USXGMII_RATE_UPDATE_MODE | USXGMII_RATE_ADAPT_MODE,
+ adapt_mode);
+
+ /* Setup USXGMII speed */
+ regmap_update_bits(mpcs->regmap, RG_PHY_TOP_SPEED_CTRL1,
+ USXGMII_XFI_RX_MODE | USXGMII_XFI_TX_MODE,
+ xfi_mode);
+
+ usleep_range(1, 10);
+
+ /* Un-gated MAC CK */
+ regmap_update_bits(mpcs->regmap, RG_PHY_TOP_SPEED_CTRL1,
+ USXGMII_MAC_CK_GATED, 0);
+
+ usleep_range(1, 10);
+
+ /* Disable interface force mode for the AN mode */
+ if (an_ctrl & USXGMII_AN_ENABLE)
+ regmap_update_bits(mpcs->regmap, RG_PHY_TOP_SPEED_CTRL1,
+ USXGMII_IF_FORCE_EN, 0);
+
+ /* Setup USXGMIISYS with the determined property */
+ mtk_usxgmii_setup_phya(pextp, interface, mpcs->id);
+
+ return mode_changed;
+}
+
+static void mtk_usxgmii_pcs_get_state(struct phylink_pcs *pcs,
+ struct phylink_link_state *state)
+{
+ struct mtk_usxgmii_pcs *mpcs = pcs_to_mtk_usxgmii_pcs(pcs);
+ struct mtk_eth *eth = mpcs->eth;
+ struct mtk_mac *mac = eth->mac[mtk_xgmii2mac_id(eth, mpcs->id)];
+ u32 val = 0;
+
+ regmap_read(mpcs->regmap, RG_PCS_AN_CTRL0, &val);
+ if (FIELD_GET(USXGMII_AN_ENABLE, val)) {
+ /* Refresh LPA by inverting LPA_LATCH */
+ regmap_read(mpcs->regmap, RG_PCS_AN_STS0, &val);
+ regmap_update_bits(mpcs->regmap, RG_PCS_AN_STS0,
+ USXGMII_LPA_LATCH,
+ !(val & USXGMII_LPA_LATCH));
+
+ regmap_read(mpcs->regmap, RG_PCS_AN_STS0, &val);
+
+ state->interface = mpcs->interface;
+ state->link = FIELD_GET(USXGMII_LPA_LINK, val);
+ state->duplex = FIELD_GET(USXGMII_LPA_DUPLEX, val);
+
+ switch (FIELD_GET(USXGMII_LPA_SPEED_MASK, val)) {
+ case USXGMII_LPA_SPEED_10:
+ state->speed = SPEED_10;
+ break;
+ case USXGMII_LPA_SPEED_100:
+ state->speed = SPEED_100;
+ break;
+ case USXGMII_LPA_SPEED_1000:
+ state->speed = SPEED_1000;
+ break;
+ case USXGMII_LPA_SPEED_2500:
+ state->speed = SPEED_2500;
+ break;
+ case USXGMII_LPA_SPEED_5000:
+ state->speed = SPEED_5000;
+ break;
+ case USXGMII_LPA_SPEED_10000:
+ state->speed = SPEED_10000;
+ break;
+ }
+ } else {
+ val = mtk_r32(mac->hw, MTK_XGMAC_STS(mac->id));
+
+ if (mac->id == MTK_GMAC2_ID)
+ val >>= 16;
+
+ switch (FIELD_GET(MTK_USXGMII_PCS_MODE, val)) {
+ case 0:
+ state->speed = SPEED_10000;
+ break;
+ case 1:
+ state->speed = SPEED_5000;
+ break;
+ case 2:
+ state->speed = SPEED_2500;
+ break;
+ case 3:
+ state->speed = SPEED_1000;
+ break;
+ }
+
+ state->interface = mpcs->interface;
+ state->link = FIELD_GET(MTK_USXGMII_PCS_LINK, val);
+ state->duplex = DUPLEX_FULL;
+ }
+
+ if (state->link == 0)
+ mtk_usxgmii_pcs_config(pcs, MLO_AN_INBAND,
+ state->interface, NULL, false);
+}
+
+static void mtk_usxgmii_pcs_restart_an(struct phylink_pcs *pcs)
+{
+ struct mtk_usxgmii_pcs *mpcs = pcs_to_mtk_usxgmii_pcs(pcs);
+ unsigned int val = 0;
+
+ if (!mpcs->regmap)
+ return;
+
+ regmap_read(mpcs->regmap, RG_PCS_AN_CTRL0, &val);
+ val |= USXGMII_AN_RESTART;
+ regmap_write(mpcs->regmap, RG_PCS_AN_CTRL0, val);
+}
+
+static void mtk_usxgmii_pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
+ phy_interface_t interface,
+ int speed, int duplex)
+{
+ /* Reconfiguring USXGMII to ensure the quality of the RX signal
+ * after the line side link up.
+ */
+ mtk_usxgmii_pcs_config(pcs, mode,
+ interface, NULL, false);
+}
+
+static const struct phylink_pcs_ops mtk_usxgmii_pcs_ops = {
+ .pcs_config = mtk_usxgmii_pcs_config,
+ .pcs_get_state = mtk_usxgmii_pcs_get_state,
+ .pcs_an_restart = mtk_usxgmii_pcs_restart_an,
+ .pcs_link_up = mtk_usxgmii_pcs_link_up,
+};
+
+int mtk_usxgmii_init(struct mtk_eth *eth)
+{
+ struct device_node *r = eth->dev->of_node;
+ struct device *dev = eth->dev;
+ struct device_node *np;
+ int i, ret;
+
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
+ np = of_parse_phandle(r, "mediatek,usxgmiisys", i);
+ if (!np)
+ break;
+
+ eth->usxgmii_pcs[i] = devm_kzalloc(dev, sizeof(*eth->usxgmii_pcs), GFP_KERNEL);
+ if (!eth->usxgmii_pcs[i])
+ return -ENOMEM;
+
+ eth->usxgmii_pcs[i]->id = i;
+ eth->usxgmii_pcs[i]->eth = eth;
+ eth->usxgmii_pcs[i]->regmap = syscon_node_to_regmap(np);
+ if (IS_ERR(eth->usxgmii_pcs[i]->regmap))
+ return PTR_ERR(eth->usxgmii_pcs[i]->regmap);
+
+ eth->usxgmii_pcs[i]->pcs.ops = &mtk_usxgmii_pcs_ops;
+ eth->usxgmii_pcs[i]->pcs.poll = true;
+ eth->usxgmii_pcs[i]->interface = PHY_INTERFACE_MODE_NA;
+
+ of_node_put(np);
+ }
+
+ ret = mtk_xfi_pextp_init(eth);
+ if (ret)
+ return ret;
+
+ ret = mtk_xfi_pll_init(eth);
+ if (ret)
+ return ret;
+
+ ret = mtk_toprgu_init(eth);
+ if (ret)
+ return ret;
+
+ return mtk_sgmii_wrapper_init(eth);
+}
+
+struct phylink_pcs *mtk_usxgmii_select_pcs(struct mtk_eth *eth, int mac_id)
+{
+ u32 xgmii_id = mtk_mac2xgmii_id(eth, mac_id);
+
+ if (!eth->usxgmii_pcs[xgmii_id]->regmap)
+ return NULL;
+
+ return &eth->usxgmii_pcs[xgmii_id]->pcs;
+}
--
2.41.0