Query PHY capabilities and supported speeds from firmware,
retrieve current link state (speed, duplex, pause, FEC),
and log the information. Seed initial link state during probe.
Signed-off-by: Bhargava Marreddy <bhargava.marreddy@broadcom.com>
Reviewed-by: Vikas Gupta <vikas.gupta@broadcom.com>
Reviewed-by: Rajashekar Hudumula <rajashekar.hudumula@broadcom.com>
Reviewed-by: Ajit Kumar Khaparde <ajit.khaparde@broadcom.com>
---
drivers/net/ethernet/broadcom/bnge/Makefile | 3 +-
drivers/net/ethernet/broadcom/bnge/bnge.h | 10 +
.../ethernet/broadcom/bnge/bnge_hwrm_lib.c | 229 +++++++++
.../ethernet/broadcom/bnge/bnge_hwrm_lib.h | 5 +
.../net/ethernet/broadcom/bnge/bnge_link.c | 460 ++++++++++++++++++
.../net/ethernet/broadcom/bnge/bnge_link.h | 193 ++++++++
.../net/ethernet/broadcom/bnge/bnge_netdev.c | 50 +-
.../net/ethernet/broadcom/bnge/bnge_netdev.h | 12 +
8 files changed, 959 insertions(+), 3 deletions(-)
create mode 100644 drivers/net/ethernet/broadcom/bnge/bnge_link.c
create mode 100644 drivers/net/ethernet/broadcom/bnge/bnge_link.h
diff --git a/drivers/net/ethernet/broadcom/bnge/Makefile b/drivers/net/ethernet/broadcom/bnge/Makefile
index fa604ee20264..8e07cb307d21 100644
--- a/drivers/net/ethernet/broadcom/bnge/Makefile
+++ b/drivers/net/ethernet/broadcom/bnge/Makefile
@@ -11,4 +11,5 @@ bng_en-y := bnge_core.o \
bnge_netdev.o \
bnge_ethtool.o \
bnge_auxr.o \
- bnge_txrx.o
+ bnge_txrx.o \
+ bnge_link.o
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge.h b/drivers/net/ethernet/broadcom/bnge/bnge.h
index f376913aa321..83ee4749cc70 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge.h
@@ -94,6 +94,11 @@ struct bnge_queue_info {
u8 queue_profile;
};
+#define BNGE_PHY_FLAGS2_SHIFT 8
+#define BNGE_PHY_FL_NO_FCS PORT_PHY_QCAPS_RESP_FLAGS_NO_FCS
+#define BNGE_PHY_FL_SPEEDS2 \
+ (PORT_PHY_QCAPS_RESP_FLAGS2_SPEEDS2_SUPPORTED << 8)
+
struct bnge_dev {
struct device *dev;
struct pci_dev *pdev;
@@ -207,6 +212,11 @@ struct bnge_dev {
struct bnge_auxr_priv *aux_priv;
struct bnge_auxr_dev *auxr_dev;
+
+ struct bnge_link_info link_info;
+
+ /* Copied from flags and flags2 in hwrm_port_phy_qcaps_output */
+ u32 phy_flags;
};
static inline bool bnge_is_roce_en(struct bnge_dev *bd)
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
index c46da3413417..f7570eb89b85 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c
@@ -981,6 +981,235 @@ void bnge_hwrm_vnic_ctx_free_one(struct bnge_dev *bd,
vnic->fw_rss_cos_lb_ctx[ctx_idx] = INVALID_HW_RING_ID;
}
+static bool bnge_phy_qcaps_no_speed(struct hwrm_port_phy_qcaps_output *resp)
+{
+ if (!resp->supported_speeds_auto_mode &&
+ !resp->supported_speeds_force_mode &&
+ !resp->supported_pam4_speeds_auto_mode &&
+ !resp->supported_pam4_speeds_force_mode &&
+ !resp->supported_speeds2_auto_mode &&
+ !resp->supported_speeds2_force_mode)
+ return true;
+ return false;
+}
+
+int bnge_hwrm_phy_qcaps(struct bnge_dev *bd)
+{
+ struct bnge_link_info *link_info = &bd->link_info;
+ struct hwrm_port_phy_qcaps_output *resp;
+ struct hwrm_port_phy_qcaps_input *req;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_PORT_PHY_QCAPS);
+ if (rc)
+ return rc;
+
+ resp = bnge_hwrm_req_hold(bd, req);
+ rc = bnge_hwrm_req_send(bd, req);
+ if (rc)
+ goto hwrm_phy_qcaps_exit;
+
+ bd->phy_flags = resp->flags |
+ (le16_to_cpu(resp->flags2) << BNGE_PHY_FLAGS2_SHIFT);
+
+ if (bnge_phy_qcaps_no_speed(resp)) {
+ link_info->phy_enabled = false;
+ netdev_warn(bd->netdev, "Ethernet link disabled\n");
+ } else if (!link_info->phy_enabled) {
+ link_info->phy_enabled = true;
+ netdev_info(bd->netdev, "Ethernet link enabled\n");
+ /* Phy re-enabled, reprobe the speeds */
+ link_info->support_auto_speeds = 0;
+ link_info->support_pam4_auto_speeds = 0;
+ link_info->support_auto_speeds2 = 0;
+ }
+
+ if (resp->supported_speeds_auto_mode)
+ link_info->support_auto_speeds =
+ le16_to_cpu(resp->supported_speeds_auto_mode);
+ if (resp->supported_pam4_speeds_auto_mode)
+ link_info->support_pam4_auto_speeds =
+ le16_to_cpu(resp->supported_pam4_speeds_auto_mode);
+ if (resp->supported_speeds2_auto_mode)
+ link_info->support_auto_speeds2 =
+ le16_to_cpu(resp->supported_speeds2_auto_mode);
+
+ bd->port_count = resp->port_cnt;
+
+hwrm_phy_qcaps_exit:
+ bnge_hwrm_req_drop(bd, req);
+ return rc;
+}
+
+int bnge_hwrm_set_link_setting(struct bnge_net *bn, bool set_pause)
+{
+ struct hwrm_port_phy_cfg_input *req;
+ struct bnge_dev *bd = bn->bd;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_PORT_PHY_CFG);
+ if (rc)
+ return rc;
+
+ if (set_pause)
+ bnge_hwrm_set_pause_common(bn, req);
+
+ bnge_hwrm_set_link_common(bn, req);
+
+ return bnge_hwrm_req_send(bd, req);
+}
+
+int bnge_update_link(struct bnge_net *bn, bool chng_link_state)
+{
+ struct hwrm_port_phy_qcfg_output *resp;
+ struct hwrm_port_phy_qcfg_input *req;
+ struct bnge_link_info *link_info;
+ struct bnge_dev *bd = bn->bd;
+ bool support_changed;
+ u8 link_state;
+ int rc;
+
+ link_info = &bd->link_info;
+ link_state = link_info->link_state;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_PORT_PHY_QCFG);
+ if (rc)
+ return rc;
+
+ resp = bnge_hwrm_req_hold(bd, req);
+ rc = bnge_hwrm_req_send(bd, req);
+ if (rc) {
+ bnge_hwrm_req_drop(bd, req);
+ return rc;
+ }
+
+ memcpy(&link_info->phy_qcfg_resp, resp, sizeof(*resp));
+ link_info->phy_link_status = resp->link;
+ link_info->duplex = resp->duplex_state;
+ link_info->pause = resp->pause;
+ link_info->auto_mode = resp->auto_mode;
+ link_info->auto_pause_setting = resp->auto_pause;
+ link_info->lp_pause = resp->link_partner_adv_pause;
+ link_info->force_pause_setting = resp->force_pause;
+ link_info->duplex_setting = resp->duplex_cfg;
+ if (link_info->phy_link_status == BNGE_LINK_LINK) {
+ link_info->link_speed = le16_to_cpu(resp->link_speed);
+ if (bd->phy_flags & BNGE_PHY_FL_SPEEDS2)
+ link_info->active_lanes = resp->active_lanes;
+ } else {
+ link_info->link_speed = 0;
+ link_info->active_lanes = 0;
+ }
+ link_info->force_link_speed = le16_to_cpu(resp->force_link_speed);
+ link_info->force_pam4_link_speed =
+ le16_to_cpu(resp->force_pam4_link_speed);
+ link_info->force_link_speed2 = le16_to_cpu(resp->force_link_speeds2);
+ link_info->support_speeds = le16_to_cpu(resp->support_speeds);
+ link_info->support_pam4_speeds = le16_to_cpu(resp->support_pam4_speeds);
+ link_info->support_speeds2 = le16_to_cpu(resp->support_speeds2);
+ link_info->auto_link_speeds = le16_to_cpu(resp->auto_link_speed_mask);
+ link_info->auto_pam4_link_speeds =
+ le16_to_cpu(resp->auto_pam4_link_speed_mask);
+ link_info->auto_link_speeds2 = le16_to_cpu(resp->auto_link_speeds2);
+ link_info->lp_auto_link_speeds =
+ le16_to_cpu(resp->link_partner_adv_speeds);
+ link_info->lp_auto_pam4_link_speeds =
+ resp->link_partner_pam4_adv_speeds;
+ link_info->media_type = resp->media_type;
+ link_info->phy_type = resp->phy_type;
+ link_info->phy_addr = resp->eee_config_phy_addr &
+ PORT_PHY_QCFG_RESP_PHY_ADDR_MASK;
+ link_info->module_status = resp->module_status;
+
+ link_info->fec_cfg = le16_to_cpu(resp->fec_cfg);
+ link_info->active_fec_sig_mode = resp->active_fec_signal_mode;
+
+ if (chng_link_state) {
+ if (link_info->phy_link_status == BNGE_LINK_LINK)
+ link_info->link_state = BNGE_LINK_STATE_UP;
+ else
+ link_info->link_state = BNGE_LINK_STATE_DOWN;
+ if (link_state != link_info->link_state)
+ bnge_report_link(bd);
+ } else {
+ /* always link down if not required to update link state */
+ link_info->link_state = BNGE_LINK_STATE_DOWN;
+ }
+ bnge_hwrm_req_drop(bd, req);
+
+ if (!BNGE_PHY_CFG_ABLE(bd))
+ return 0;
+
+ support_changed = bnge_support_speed_dropped(bn);
+ if (support_changed && (bn->eth_link_info.autoneg & BNGE_AUTONEG_SPEED))
+ rc = bnge_hwrm_set_link_setting(bn, true);
+ return rc;
+}
+
+int bnge_hwrm_set_pause(struct bnge_net *bn)
+{
+ struct bnge_ethtool_link_info *elink_info = &bn->eth_link_info;
+ struct hwrm_port_phy_cfg_input *req;
+ struct bnge_dev *bd = bn->bd;
+ bool pause_autoneg;
+ int rc;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_PORT_PHY_CFG);
+ if (rc)
+ return rc;
+
+ pause_autoneg = !!(elink_info->autoneg & BNGE_AUTONEG_FLOW_CTRL);
+
+ /* Prepare PHY pause-advertisement or forced-pause settings. */
+ bnge_hwrm_set_pause_common(bn, req);
+
+ /* Prepare speed/autoneg settings */
+ if (pause_autoneg || elink_info->force_link_chng)
+ bnge_hwrm_set_link_common(bn, req);
+
+ rc = bnge_hwrm_req_send(bd, req);
+ if (!rc && !pause_autoneg) {
+ /* Since changing of pause setting, with pause autoneg off,
+ * doesn't trigger any link change event, the driver needs to
+ * update the current MAC pause upon successful return of the
+ * phy_cfg command.
+ */
+ bd->link_info.force_pause_setting =
+ bd->link_info.pause = elink_info->req_flow_ctrl;
+ bd->link_info.auto_pause_setting = 0;
+ if (!elink_info->force_link_chng)
+ bnge_report_link(bd);
+ }
+ elink_info->force_link_chng = false;
+
+ return rc;
+}
+
+int bnge_hwrm_shutdown_link(struct bnge_dev *bd)
+{
+ struct hwrm_port_phy_cfg_input *req;
+ int rc;
+
+ if (!BNGE_PHY_CFG_ABLE(bd))
+ return 0;
+
+ rc = bnge_hwrm_req_init(bd, req, HWRM_PORT_PHY_CFG);
+ if (rc)
+ return rc;
+
+ req->flags = cpu_to_le32(PORT_PHY_CFG_REQ_FLAGS_FORCE_LINK_DWN);
+ rc = bnge_hwrm_req_send(bd, req);
+ if (!rc) {
+ /* Device is not obliged to link down in certain scenarios,
+ * even when forced. Setting the state unknown is consistent
+ * with driver startup and will force link state to be
+ * reported during subsequent open based on PORT_PHY_QCFG.
+ */
+ bd->link_info.link_state = BNGE_LINK_STATE_UNKNOWN;
+ }
+ return rc;
+}
+
void bnge_hwrm_stat_ctx_free(struct bnge_net *bn)
{
struct hwrm_stat_ctx_free_input *req;
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
index 38b046237feb..86ca3ac2244b 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.h
@@ -57,4 +57,9 @@ int hwrm_ring_alloc_send_msg(struct bnge_net *bn,
int bnge_hwrm_set_async_event_cr(struct bnge_dev *bd, int idx);
int bnge_hwrm_vnic_set_tpa(struct bnge_dev *bd, struct bnge_vnic_info *vnic,
u32 tpa_flags);
+int bnge_update_link(struct bnge_net *bn, bool chng_link_state);
+int bnge_hwrm_phy_qcaps(struct bnge_dev *bd);
+int bnge_hwrm_set_link_setting(struct bnge_net *bn, bool set_pause);
+int bnge_hwrm_set_pause(struct bnge_net *bn);
+int bnge_hwrm_shutdown_link(struct bnge_dev *bd);
#endif /* _BNGE_HWRM_LIB_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_link.c b/drivers/net/ethernet/broadcom/bnge/bnge_link.c
new file mode 100644
index 000000000000..0c76cbc794f7
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_link.c
@@ -0,0 +1,460 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2026 Broadcom.
+
+#include <linux/linkmode.h>
+
+#include "bnge.h"
+#include "bnge_link.h"
+#include "bnge_hwrm_lib.h"
+
+static u32 bnge_fw_to_ethtool_speed(u16 fw_link_speed)
+{
+ switch (fw_link_speed) {
+ case BNGE_LINK_SPEED_50GB:
+ case BNGE_LINK_SPEED_50GB_PAM4:
+ return SPEED_50000;
+ case BNGE_LINK_SPEED_100GB:
+ case BNGE_LINK_SPEED_100GB_PAM4:
+ case BNGE_LINK_SPEED_100GB_PAM4_112:
+ return SPEED_100000;
+ case BNGE_LINK_SPEED_200GB:
+ case BNGE_LINK_SPEED_200GB_PAM4:
+ case BNGE_LINK_SPEED_200GB_PAM4_112:
+ return SPEED_200000;
+ case BNGE_LINK_SPEED_400GB:
+ case BNGE_LINK_SPEED_400GB_PAM4:
+ case BNGE_LINK_SPEED_400GB_PAM4_112:
+ return SPEED_400000;
+ case BNGE_LINK_SPEED_800GB:
+ case BNGE_LINK_SPEED_800GB_PAM4_112:
+ return SPEED_800000;
+ default:
+ return SPEED_UNKNOWN;
+ }
+}
+
+static void bnge_set_auto_speed(struct bnge_net *bn)
+{
+ struct bnge_ethtool_link_info *elink_info = &bn->eth_link_info;
+ struct bnge_link_info *link_info;
+ struct bnge_dev *bd = bn->bd;
+
+ link_info = &bd->link_info;
+
+ if (bd->phy_flags & BNGE_PHY_FL_SPEEDS2) {
+ elink_info->advertising = link_info->auto_link_speeds2;
+ return;
+ }
+ elink_info->advertising = link_info->auto_link_speeds;
+ elink_info->advertising_pam4 = link_info->auto_pam4_link_speeds;
+}
+
+static void bnge_set_force_speed(struct bnge_net *bn)
+{
+ struct bnge_ethtool_link_info *elink_info = &bn->eth_link_info;
+ struct bnge_link_info *link_info;
+ struct bnge_dev *bd = bn->bd;
+
+ link_info = &bd->link_info;
+
+ if (bd->phy_flags & BNGE_PHY_FL_SPEEDS2) {
+ elink_info->req_link_speed = link_info->force_link_speed2;
+ switch (elink_info->req_link_speed) {
+ case BNGE_LINK_SPEED_50GB_PAM4:
+ case BNGE_LINK_SPEED_100GB_PAM4:
+ case BNGE_LINK_SPEED_200GB_PAM4:
+ case BNGE_LINK_SPEED_400GB_PAM4:
+ elink_info->req_signal_mode = BNGE_SIG_MODE_PAM4;
+ break;
+ case BNGE_LINK_SPEED_100GB_PAM4_112:
+ case BNGE_LINK_SPEED_200GB_PAM4_112:
+ case BNGE_LINK_SPEED_400GB_PAM4_112:
+ case BNGE_LINK_SPEED_800GB_PAM4_112:
+ elink_info->req_signal_mode = BNGE_SIG_MODE_PAM4_112;
+ break;
+ default:
+ elink_info->req_signal_mode = BNGE_SIG_MODE_NRZ;
+ break;
+ }
+ } else if (link_info->force_pam4_link_speed) {
+ elink_info->req_link_speed = link_info->force_pam4_link_speed;
+ elink_info->req_signal_mode = BNGE_SIG_MODE_PAM4;
+ } else {
+ elink_info->req_link_speed = link_info->force_link_speed;
+ elink_info->req_signal_mode = BNGE_SIG_MODE_NRZ;
+ }
+}
+
+void bnge_init_ethtool_link_settings(struct bnge_net *bn)
+{
+ struct bnge_ethtool_link_info *elink_info = &bn->eth_link_info;
+ struct bnge_link_info *link_info;
+ struct bnge_dev *bd = bn->bd;
+
+ link_info = &bd->link_info;
+
+ if (BNGE_AUTO_MODE(link_info->auto_mode)) {
+ elink_info->autoneg = BNGE_AUTONEG_SPEED;
+ if (link_info->auto_pause_setting &
+ PORT_PHY_CFG_REQ_AUTO_PAUSE_AUTONEG_PAUSE)
+ elink_info->autoneg |= BNGE_AUTONEG_FLOW_CTRL;
+ bnge_set_auto_speed(bn);
+ } else {
+ bnge_set_force_speed(bn);
+ elink_info->req_duplex = link_info->duplex_setting;
+ }
+ if (elink_info->autoneg & BNGE_AUTONEG_FLOW_CTRL)
+ elink_info->req_flow_ctrl =
+ link_info->auto_pause_setting & BNGE_LINK_PAUSE_BOTH;
+ else
+ elink_info->req_flow_ctrl = link_info->force_pause_setting;
+}
+
+int bnge_probe_phy(struct bnge_net *bn, bool fw_dflt)
+{
+ struct bnge_dev *bd = bn->bd;
+ int rc;
+
+ bd->phy_flags = 0;
+ rc = bnge_hwrm_phy_qcaps(bd);
+ if (rc) {
+ netdev_err(bn->netdev,
+ "Probe PHY can't get PHY qcaps (rc: %d)\n", rc);
+ return rc;
+ }
+ if (bd->phy_flags & BNGE_PHY_FL_NO_FCS)
+ bn->netdev->priv_flags |= IFF_SUPP_NOFCS;
+ else
+ bn->netdev->priv_flags &= ~IFF_SUPP_NOFCS;
+ if (!fw_dflt)
+ return 0;
+
+ rc = bnge_update_link(bn, false);
+ if (rc) {
+ netdev_err(bn->netdev, "Probe PHY can't update link (rc: %d)\n",
+ rc);
+ return rc;
+ }
+ bnge_init_ethtool_link_settings(bn);
+
+ return 0;
+}
+
+void bnge_hwrm_set_link_common(struct bnge_net *bn,
+ struct hwrm_port_phy_cfg_input *req)
+{
+ struct bnge_ethtool_link_info *elink_info = &bn->eth_link_info;
+ struct bnge_dev *bd = bn->bd;
+
+ if (elink_info->autoneg & BNGE_AUTONEG_SPEED) {
+ req->auto_mode |= PORT_PHY_CFG_REQ_AUTO_MODE_SPEED_MASK;
+ if (bd->phy_flags & BNGE_PHY_FL_SPEEDS2) {
+ req->enables |= cpu_to_le32(BNGE_PHY_AUTO_SPEEDS2_MASK);
+ req->auto_link_speeds2_mask =
+ cpu_to_le16(elink_info->advertising);
+ } else if (elink_info->advertising) {
+ req->enables |= cpu_to_le32(BNGE_PHY_AUTO_SPEED_MASK);
+ req->auto_link_speed_mask =
+ cpu_to_le16(elink_info->advertising);
+ }
+ if (elink_info->advertising_pam4) {
+ req->enables |=
+ cpu_to_le32(BNGE_PHY_AUTO_PAM4_SPEED_MASK);
+ req->auto_link_pam4_speed_mask =
+ cpu_to_le16(elink_info->advertising_pam4);
+ }
+ req->enables |= cpu_to_le32(PORT_PHY_CFG_REQ_ENABLES_AUTO_MODE);
+ req->flags |= cpu_to_le32(BNGE_PHY_FLAGS_RESTART_AUTO);
+ } else {
+ req->flags |= cpu_to_le32(PORT_PHY_CFG_REQ_FLAGS_FORCE);
+ if (bd->phy_flags & BNGE_PHY_FL_SPEEDS2) {
+ req->force_link_speeds2 =
+ cpu_to_le16(elink_info->req_link_speed);
+ req->enables |=
+ cpu_to_le32(BNGE_PHY_FLAGS_ENA_FORCE_SPEEDS2);
+ netif_info(bn, link, bn->netdev,
+ "Forcing FW speed2: %d\n",
+ (u32)elink_info->req_link_speed);
+ } else if (elink_info->req_signal_mode == BNGE_SIG_MODE_PAM4) {
+ req->force_pam4_link_speed =
+ cpu_to_le16(elink_info->req_link_speed);
+ req->enables |=
+ cpu_to_le32(BNGE_PHY_FLAGS_ENA_FORCE_PM4_SPEED);
+ } else {
+ req->force_link_speed =
+ cpu_to_le16(elink_info->req_link_speed);
+ }
+ }
+
+ /* tell FW that the setting takes effect immediately */
+ req->flags |= cpu_to_le32(PORT_PHY_CFG_REQ_FLAGS_RESET_PHY);
+}
+
+static bool bnge_auto_speed_updated(struct bnge_net *bn)
+{
+ struct bnge_ethtool_link_info *elink_info = &bn->eth_link_info;
+ struct bnge_link_info *link_info;
+ struct bnge_dev *bd = bn->bd;
+
+ link_info = &bd->link_info;
+
+ if (bd->phy_flags & BNGE_PHY_FL_SPEEDS2)
+ return elink_info->advertising != link_info->auto_link_speeds2;
+
+ return elink_info->advertising != link_info->auto_link_speeds ||
+ elink_info->advertising_pam4 != link_info->auto_pam4_link_speeds;
+}
+
+void bnge_hwrm_set_pause_common(struct bnge_net *bn,
+ struct hwrm_port_phy_cfg_input *req)
+{
+ if (bn->eth_link_info.autoneg & BNGE_AUTONEG_FLOW_CTRL) {
+ req->auto_pause = PORT_PHY_CFG_REQ_AUTO_PAUSE_AUTONEG_PAUSE;
+ if (bn->eth_link_info.req_flow_ctrl & BNGE_LINK_PAUSE_RX)
+ req->auto_pause |= PORT_PHY_CFG_REQ_AUTO_PAUSE_RX;
+ if (bn->eth_link_info.req_flow_ctrl & BNGE_LINK_PAUSE_TX)
+ req->auto_pause |= PORT_PHY_CFG_REQ_AUTO_PAUSE_TX;
+ req->enables |=
+ cpu_to_le32(PORT_PHY_CFG_REQ_ENABLES_AUTO_PAUSE);
+ } else {
+ if (bn->eth_link_info.req_flow_ctrl & BNGE_LINK_PAUSE_RX)
+ req->force_pause |= PORT_PHY_CFG_REQ_FORCE_PAUSE_RX;
+ if (bn->eth_link_info.req_flow_ctrl & BNGE_LINK_PAUSE_TX)
+ req->force_pause |= PORT_PHY_CFG_REQ_FORCE_PAUSE_TX;
+ req->enables |=
+ cpu_to_le32(PORT_PHY_CFG_REQ_ENABLES_FORCE_PAUSE);
+ req->auto_pause = req->force_pause;
+ req->enables |=
+ cpu_to_le32(PORT_PHY_CFG_REQ_ENABLES_AUTO_PAUSE);
+ }
+}
+
+static bool bnge_force_speed_updated(struct bnge_net *bn)
+{
+ struct bnge_ethtool_link_info *elink_info = &bn->eth_link_info;
+ struct bnge_link_info *link_info;
+ struct bnge_dev *bd = bn->bd;
+
+ link_info = &bd->link_info;
+
+ if (bd->phy_flags & BNGE_PHY_FL_SPEEDS2)
+ return elink_info->req_link_speed != link_info->force_link_speed2;
+
+ if (elink_info->req_signal_mode == BNGE_SIG_MODE_NRZ)
+ return elink_info->req_link_speed != link_info->force_link_speed;
+
+ return elink_info->req_signal_mode == BNGE_SIG_MODE_PAM4 &&
+ elink_info->req_link_speed != link_info->force_pam4_link_speed;
+}
+
+int bnge_update_phy_setting(struct bnge_net *bn)
+{
+ struct bnge_ethtool_link_info *elink_info;
+ struct bnge_link_info *link_info;
+ struct bnge_dev *bd = bn->bd;
+ bool update_pause = false;
+ bool update_link = false;
+ int rc;
+
+ link_info = &bd->link_info;
+ elink_info = &bn->eth_link_info;
+ rc = bnge_update_link(bn, true);
+ if (rc) {
+ netdev_err(bn->netdev, "failed to update link (rc: %d)\n",
+ rc);
+ return rc;
+ }
+
+ if ((elink_info->autoneg & BNGE_AUTONEG_FLOW_CTRL) &&
+ (link_info->auto_pause_setting & BNGE_LINK_PAUSE_BOTH) !=
+ elink_info->req_flow_ctrl)
+ update_pause = true;
+ if (!(elink_info->autoneg & BNGE_AUTONEG_FLOW_CTRL) &&
+ link_info->force_pause_setting != elink_info->req_flow_ctrl)
+ update_pause = true;
+ if (!(elink_info->autoneg & BNGE_AUTONEG_SPEED)) {
+ if (BNGE_AUTO_MODE(link_info->auto_mode))
+ update_link = true;
+ if (bnge_force_speed_updated(bn))
+ update_link = true;
+ if (elink_info->req_duplex != link_info->duplex_setting)
+ update_link = true;
+ } else {
+ if (link_info->auto_mode == BNGE_LINK_AUTO_NONE)
+ update_link = true;
+ if (bnge_auto_speed_updated(bn))
+ update_link = true;
+ }
+
+ /* The last close may have shut down the link, so need to call
+ * PHY_CFG to bring it back up.
+ */
+ if (!BNGE_LINK_IS_UP(bd))
+ update_link = true;
+
+ if (update_link)
+ rc = bnge_hwrm_set_link_setting(bn, update_pause);
+ else if (update_pause)
+ rc = bnge_hwrm_set_pause(bn);
+
+ if (rc) {
+ netdev_err(bn->netdev,
+ "failed to update PHY setting (rc: %d)\n", rc);
+ return rc;
+ }
+
+ return 0;
+}
+
+void bnge_get_port_module_status(struct bnge_net *bn)
+{
+ struct hwrm_port_phy_qcfg_output *resp;
+ struct bnge_link_info *link_info;
+ struct bnge_dev *bd = bn->bd;
+ u8 module_status;
+
+ link_info = &bd->link_info;
+ resp = &link_info->phy_qcfg_resp;
+
+ if (bnge_update_link(bn, true))
+ return;
+
+ module_status = link_info->module_status;
+ switch (module_status) {
+ case PORT_PHY_QCFG_RESP_MODULE_STATUS_DISABLETX:
+ case PORT_PHY_QCFG_RESP_MODULE_STATUS_PWRDOWN:
+ case PORT_PHY_QCFG_RESP_MODULE_STATUS_WARNINGMSG:
+ netdev_warn(bn->netdev,
+ "Unqualified SFP+ module detected on port %d\n",
+ bd->pf.port_id);
+ netdev_warn(bn->netdev, "Module part number %s\n",
+ resp->phy_vendor_partnumber);
+ if (module_status == PORT_PHY_QCFG_RESP_MODULE_STATUS_DISABLETX)
+ netdev_warn(bn->netdev, "TX is disabled\n");
+ if (module_status == PORT_PHY_QCFG_RESP_MODULE_STATUS_PWRDOWN)
+ netdev_warn(bn->netdev, "SFP+ module is shut down\n");
+ break;
+ }
+}
+
+static bool bnge_support_dropped(u16 advertising, u16 supported)
+{
+ return (advertising & ~supported) != 0;
+}
+
+bool bnge_support_speed_dropped(struct bnge_net *bn)
+{
+ struct bnge_ethtool_link_info *elink_info = &bn->eth_link_info;
+ struct bnge_link_info *link_info;
+ struct bnge_dev *bd = bn->bd;
+
+ link_info = &bd->link_info;
+
+ /* Check if any advertised speeds are no longer supported. The caller
+ * holds the netdev instance lock, so we can modify link_info settings.
+ */
+ if (bd->phy_flags & BNGE_PHY_FL_SPEEDS2) {
+ if (bnge_support_dropped(elink_info->advertising,
+ link_info->support_auto_speeds2)) {
+ elink_info->advertising =
+ link_info->support_auto_speeds2;
+ return true;
+ }
+ return false;
+ }
+ if (bnge_support_dropped(elink_info->advertising,
+ link_info->support_auto_speeds)) {
+ elink_info->advertising = link_info->support_auto_speeds;
+ return true;
+ }
+ if (bnge_support_dropped(elink_info->advertising_pam4,
+ link_info->support_pam4_auto_speeds)) {
+ elink_info->advertising_pam4 =
+ link_info->support_pam4_auto_speeds;
+ return true;
+ }
+ return false;
+}
+
+static char *bnge_report_fec(struct bnge_link_info *link_info)
+{
+ u8 active_fec = link_info->active_fec_sig_mode &
+ PORT_PHY_QCFG_RESP_ACTIVE_FEC_MASK;
+
+ switch (active_fec) {
+ default:
+ case PORT_PHY_QCFG_RESP_ACTIVE_FEC_FEC_NONE_ACTIVE:
+ return "None";
+ case PORT_PHY_QCFG_RESP_ACTIVE_FEC_FEC_CLAUSE74_ACTIVE:
+ return "Clause 74 BaseR";
+ case PORT_PHY_QCFG_RESP_ACTIVE_FEC_FEC_CLAUSE91_ACTIVE:
+ return "Clause 91 RS(528,514)";
+ case PORT_PHY_QCFG_RESP_ACTIVE_FEC_FEC_RS544_1XN_ACTIVE:
+ return "Clause 91 RS544_1XN";
+ case PORT_PHY_QCFG_RESP_ACTIVE_FEC_FEC_RS544_IEEE_ACTIVE:
+ return "Clause 91 RS(544,514)";
+ case PORT_PHY_QCFG_RESP_ACTIVE_FEC_FEC_RS272_1XN_ACTIVE:
+ return "Clause 91 RS272_1XN";
+ case PORT_PHY_QCFG_RESP_ACTIVE_FEC_FEC_RS272_IEEE_ACTIVE:
+ return "Clause 91 RS(272,257)";
+ }
+}
+
+void bnge_report_link(struct bnge_dev *bd)
+{
+ if (BNGE_LINK_IS_UP(bd)) {
+ const char *signal = "";
+ const char *flow_ctrl;
+ const char *duplex;
+ u32 speed;
+ u16 fec;
+
+ netif_carrier_on(bd->netdev);
+ speed = bnge_fw_to_ethtool_speed(bd->link_info.link_speed);
+ if (speed == SPEED_UNKNOWN) {
+ netdev_info(bd->netdev,
+ "NIC Link is Up, speed unknown\n");
+ return;
+ }
+ if (bd->link_info.duplex == BNGE_LINK_DUPLEX_FULL)
+ duplex = "full";
+ else
+ duplex = "half";
+ if (bd->link_info.pause == BNGE_LINK_PAUSE_BOTH)
+ flow_ctrl = "ON - receive & transmit";
+ else if (bd->link_info.pause == BNGE_LINK_PAUSE_TX)
+ flow_ctrl = "ON - transmit";
+ else if (bd->link_info.pause == BNGE_LINK_PAUSE_RX)
+ flow_ctrl = "ON - receive";
+ else
+ flow_ctrl = "none";
+ if (bd->link_info.phy_qcfg_resp.option_flags &
+ PORT_PHY_QCFG_RESP_OPTION_FLAGS_SIGNAL_MODE_KNOWN) {
+ u8 sig_mode = bd->link_info.active_fec_sig_mode &
+ PORT_PHY_QCFG_RESP_SIGNAL_MODE_MASK;
+ switch (sig_mode) {
+ case PORT_PHY_QCFG_RESP_SIGNAL_MODE_NRZ:
+ signal = "(NRZ) ";
+ break;
+ case PORT_PHY_QCFG_RESP_SIGNAL_MODE_PAM4:
+ signal = "(PAM4 56Gbps) ";
+ break;
+ case PORT_PHY_QCFG_RESP_SIGNAL_MODE_PAM4_112:
+ signal = "(PAM4 112Gbps) ";
+ break;
+ default:
+ break;
+ }
+ }
+ netdev_info(bd->netdev, "NIC Link is Up, %u Mbps %s%s duplex, Flow control: %s\n",
+ speed, signal, duplex, flow_ctrl);
+ fec = bd->link_info.fec_cfg;
+ if (!(fec & PORT_PHY_QCFG_RESP_FEC_CFG_FEC_NONE_SUPPORTED))
+ netdev_info(bd->netdev, "FEC autoneg %s encoding: %s\n",
+ (fec & BNGE_FEC_AUTONEG) ? "on" : "off",
+ bnge_report_fec(&bd->link_info));
+ } else {
+ netif_carrier_off(bd->netdev);
+ netdev_err(bd->netdev, "NIC Link is Down\n");
+ }
+}
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_link.h b/drivers/net/ethernet/broadcom/bnge/bnge_link.h
new file mode 100644
index 000000000000..f22dec2899e3
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_link.h
@@ -0,0 +1,193 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2026 Broadcom */
+
+#ifndef _BNGE_LINK_H_
+#define _BNGE_LINK_H_
+
+#define BNGE_PHY_CFG_ABLE(bd) \
+ ((bd)->link_info.phy_enabled)
+
+#define BNGE_PHY_AUTO_SPEEDS2_MASK \
+ PORT_PHY_CFG_REQ_ENABLES_AUTO_LINK_SPEEDS2_MASK
+#define BNGE_PHY_AUTO_SPEED_MASK \
+ PORT_PHY_CFG_REQ_ENABLES_AUTO_LINK_SPEED_MASK
+#define BNGE_PHY_AUTO_PAM4_SPEED_MASK \
+ PORT_PHY_CFG_REQ_ENABLES_AUTO_PAM4_LINK_SPEED_MASK
+#define BNGE_PHY_FLAGS_RESTART_AUTO \
+ PORT_PHY_CFG_REQ_FLAGS_RESTART_AUTONEG
+#define BNGE_PHY_FLAGS_ENA_FORCE_SPEEDS2 \
+ PORT_PHY_CFG_REQ_ENABLES_FORCE_LINK_SPEEDS2
+#define BNGE_PHY_FLAGS_ENA_FORCE_PM4_SPEED \
+ PORT_PHY_CFG_REQ_ENABLES_FORCE_PAM4_LINK_SPEED
+
+#define BNGE_LINK_LINK PORT_PHY_QCFG_RESP_LINK_LINK
+
+enum bnge_link_state {
+ BNGE_LINK_STATE_UNKNOWN,
+ BNGE_LINK_STATE_DOWN,
+ BNGE_LINK_STATE_UP,
+};
+
+#define BNGE_LINK_IS_UP(bd) \
+ ((bd)->link_info.link_state == BNGE_LINK_STATE_UP)
+
+#define BNGE_LINK_DUPLEX_FULL PORT_PHY_QCFG_RESP_DUPLEX_STATE_FULL
+
+#define BNGE_LINK_PAUSE_TX PORT_PHY_QCFG_RESP_PAUSE_TX
+#define BNGE_LINK_PAUSE_RX PORT_PHY_QCFG_RESP_PAUSE_RX
+#define BNGE_LINK_PAUSE_BOTH (PORT_PHY_QCFG_RESP_PAUSE_RX | \
+ PORT_PHY_QCFG_RESP_PAUSE_TX)
+
+#define BNGE_LINK_AUTO_NONE PORT_PHY_QCFG_RESP_AUTO_MODE_NONE
+#define BNGE_LINK_AUTO_MSK PORT_PHY_QCFG_RESP_AUTO_MODE_SPEED_MASK
+#define BNGE_AUTO_MODE(mode) ((mode) > BNGE_LINK_AUTO_NONE && \
+ (mode) <= BNGE_LINK_AUTO_MSK)
+
+#define BNGE_LINK_SPEED_50GB PORT_PHY_QCFG_RESP_LINK_SPEED_50GB
+#define BNGE_LINK_SPEED_100GB PORT_PHY_QCFG_RESP_LINK_SPEED_100GB
+#define BNGE_LINK_SPEED_200GB PORT_PHY_QCFG_RESP_LINK_SPEED_200GB
+#define BNGE_LINK_SPEED_400GB PORT_PHY_QCFG_RESP_LINK_SPEED_400GB
+#define BNGE_LINK_SPEED_800GB PORT_PHY_QCFG_RESP_LINK_SPEED_800GB
+
+#define BNGE_LINK_SPEED_MSK_50GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS_50GB
+#define BNGE_LINK_SPEED_MSK_100GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS_100GB
+
+#define BNGE_LINK_PAM4_SPEED_MSK_50GB PORT_PHY_QCFG_RESP_SUPPORT_PAM4_SPEEDS_50G
+#define BNGE_LINK_PAM4_SPEED_MSK_100GB \
+ PORT_PHY_QCFG_RESP_SUPPORT_PAM4_SPEEDS_100G
+#define BNGE_LINK_PAM4_SPEED_MSK_200GB \
+ PORT_PHY_QCFG_RESP_SUPPORT_PAM4_SPEEDS_200G
+
+#define BNGE_LINK_SPEEDS2_MSK_50GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_50GB
+#define BNGE_LINK_SPEEDS2_MSK_100GB PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_100GB
+#define BNGE_LINK_SPEEDS2_MSK_50GB_PAM4 \
+ PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_50GB_PAM4_56
+#define BNGE_LINK_SPEEDS2_MSK_100GB_PAM4 \
+ PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_100GB_PAM4_56
+#define BNGE_LINK_SPEEDS2_MSK_200GB_PAM4 \
+ PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_200GB_PAM4_56
+#define BNGE_LINK_SPEEDS2_MSK_400GB_PAM4 \
+ PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_400GB_PAM4_56
+#define BNGE_LINK_SPEEDS2_MSK_100GB_PAM4_112 \
+ PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_100GB_PAM4_112
+#define BNGE_LINK_SPEEDS2_MSK_200GB_PAM4_112 \
+ PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_200GB_PAM4_112
+#define BNGE_LINK_SPEEDS2_MSK_400GB_PAM4_112 \
+ PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_400GB_PAM4_112
+#define BNGE_LINK_SPEEDS2_MSK_800GB_PAM4_112 \
+ PORT_PHY_QCFG_RESP_SUPPORT_SPEEDS2_800GB_PAM4_112
+
+#define BNGE_LINK_SPEED_50GB_PAM4 \
+ PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_50GB_PAM4_56
+#define BNGE_LINK_SPEED_100GB_PAM4 \
+ PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_100GB_PAM4_56
+#define BNGE_LINK_SPEED_200GB_PAM4 \
+ PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_200GB_PAM4_56
+#define BNGE_LINK_SPEED_400GB_PAM4 \
+ PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_400GB_PAM4_56
+#define BNGE_LINK_SPEED_100GB_PAM4_112 \
+ PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_100GB_PAM4_112
+#define BNGE_LINK_SPEED_200GB_PAM4_112 \
+ PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_200GB_PAM4_112
+#define BNGE_LINK_SPEED_400GB_PAM4_112 \
+ PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_400GB_PAM4_112
+#define BNGE_LINK_SPEED_800GB_PAM4_112 \
+ PORT_PHY_CFG_REQ_FORCE_LINK_SPEEDS2_800GB_PAM4_112
+
+#define BNGE_FEC_NONE PORT_PHY_QCFG_RESP_FEC_CFG_FEC_NONE_SUPPORTED
+#define BNGE_FEC_AUTONEG PORT_PHY_QCFG_RESP_FEC_CFG_FEC_AUTONEG_ENABLED
+#define BNGE_FEC_ENC_BASE_R_CAP \
+ PORT_PHY_QCFG_RESP_FEC_CFG_FEC_CLAUSE74_SUPPORTED
+#define BNGE_FEC_ENC_BASE_R PORT_PHY_QCFG_RESP_FEC_CFG_FEC_CLAUSE74_ENABLED
+#define BNGE_FEC_ENC_RS_CAP \
+ PORT_PHY_QCFG_RESP_FEC_CFG_FEC_CLAUSE91_SUPPORTED
+#define BNGE_FEC_ENC_LLRS_CAP \
+ (PORT_PHY_QCFG_RESP_FEC_CFG_FEC_RS272_1XN_SUPPORTED | \
+ PORT_PHY_QCFG_RESP_FEC_CFG_FEC_RS272_IEEE_SUPPORTED)
+#define BNGE_FEC_ENC_RS \
+ (PORT_PHY_QCFG_RESP_FEC_CFG_FEC_CLAUSE91_ENABLED | \
+ PORT_PHY_QCFG_RESP_FEC_CFG_FEC_RS544_1XN_ENABLED | \
+ PORT_PHY_QCFG_RESP_FEC_CFG_FEC_RS544_IEEE_ENABLED)
+#define BNGE_FEC_ENC_LLRS \
+ (PORT_PHY_QCFG_RESP_FEC_CFG_FEC_RS272_1XN_ENABLED | \
+ PORT_PHY_QCFG_RESP_FEC_CFG_FEC_RS272_IEEE_ENABLED)
+
+struct bnge_link_info {
+ u8 phy_type;
+ u8 media_type;
+ u8 phy_addr;
+ u8 phy_link_status;
+ bool phy_enabled;
+
+ u8 link_state;
+ u8 active_lanes;
+ u8 duplex;
+ u8 pause;
+ u8 lp_pause;
+ u8 auto_pause_setting;
+ u8 force_pause_setting;
+ u8 duplex_setting;
+ u8 auto_mode;
+ u16 link_speed;
+ u16 support_speeds;
+ u16 support_pam4_speeds;
+ u16 support_speeds2;
+
+ u16 auto_link_speeds; /* fw adv setting */
+ u16 auto_pam4_link_speeds;
+ u16 auto_link_speeds2;
+
+ u16 support_auto_speeds;
+ u16 support_pam4_auto_speeds;
+ u16 support_auto_speeds2;
+
+ u16 lp_auto_link_speeds;
+ u16 lp_auto_pam4_link_speeds;
+ u16 force_link_speed;
+ u16 force_pam4_link_speed;
+ u16 force_link_speed2;
+
+ u8 module_status;
+ u8 active_fec_sig_mode;
+ u16 fec_cfg;
+
+ /* A copy of phy_qcfg output used to report link
+ * info to VF
+ */
+ struct hwrm_port_phy_qcfg_output phy_qcfg_resp;
+
+ bool phy_retry;
+ unsigned long phy_retry_expires;
+};
+
+#define BNGE_AUTONEG_SPEED 1
+#define BNGE_AUTONEG_FLOW_CTRL 2
+
+#define BNGE_SIG_MODE_NRZ PORT_PHY_QCFG_RESP_SIGNAL_MODE_NRZ
+#define BNGE_SIG_MODE_PAM4 PORT_PHY_QCFG_RESP_SIGNAL_MODE_PAM4
+#define BNGE_SIG_MODE_PAM4_112 PORT_PHY_QCFG_RESP_SIGNAL_MODE_PAM4_112
+#define BNGE_SIG_MODE_MAX (PORT_PHY_QCFG_RESP_SIGNAL_MODE_LAST + 1)
+
+struct bnge_ethtool_link_info {
+ /* copy of requested setting from ethtool cmd */
+ u8 autoneg;
+ u8 req_signal_mode;
+ u8 req_duplex;
+ u8 req_flow_ctrl;
+ u16 req_link_speed;
+ u16 advertising; /* user adv setting */
+ u16 advertising_pam4;
+ bool force_link_chng;
+};
+
+void bnge_hwrm_set_link_common(struct bnge_net *bn,
+ struct hwrm_port_phy_cfg_input *req);
+void bnge_hwrm_set_pause_common(struct bnge_net *bn,
+ struct hwrm_port_phy_cfg_input *req);
+int bnge_update_phy_setting(struct bnge_net *bn);
+void bnge_get_port_module_status(struct bnge_net *bn);
+void bnge_report_link(struct bnge_dev *bd);
+bool bnge_support_speed_dropped(struct bnge_net *bn);
+void bnge_init_ethtool_link_settings(struct bnge_net *bn);
+int bnge_probe_phy(struct bnge_net *bn, bool fw_dflt);
+#endif /* _BNGE_LINK_H_ */
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
index edbb42efb70b..db3a19bbf75a 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
@@ -101,6 +101,17 @@ static int bnge_alloc_ring_stats(struct bnge_net *bn)
return rc;
}
+void __bnge_queue_sp_work(struct bnge_net *bn)
+{
+ queue_work(bn->bnge_pf_wq, &bn->sp_task);
+}
+
+static void bnge_queue_sp_work(struct bnge_net *bn, unsigned int event)
+{
+ set_bit(event, &bn->sp_event);
+ __bnge_queue_sp_work(bn);
+}
+
static void bnge_timer(struct timer_list *t)
{
struct bnge_net *bn = timer_container_of(bn, t, timer);
@@ -110,7 +121,14 @@ static void bnge_timer(struct timer_list *t)
!test_bit(BNGE_STATE_OPEN, &bd->state))
return;
- /* Periodic work added by later patches */
+ if (bd->link_info.phy_retry) {
+ if (time_after(jiffies, bd->link_info.phy_retry_expires)) {
+ bd->link_info.phy_retry = false;
+ netdev_warn(bn->netdev, "failed to update PHY settings after maximum retries.\n");
+ } else {
+ bnge_queue_sp_work(bn, BNGE_UPDATE_PHY_SP_EVENT);
+ }
+ }
mod_timer(&bn->timer, jiffies + bn->current_interval);
}
@@ -126,7 +144,17 @@ static void bnge_sp_task(struct work_struct *work)
return;
}
- /* Event handling work added by later patches */
+ if (test_and_clear_bit(BNGE_UPDATE_PHY_SP_EVENT, &bn->sp_event)) {
+ int rc;
+
+ rc = bnge_update_phy_setting(bn);
+ if (rc) {
+ netdev_warn(bn->netdev, "update PHY settings retry failed\n");
+ } else {
+ bd->link_info.phy_retry = false;
+ netdev_info(bn->netdev, "update PHY settings retry succeeded\n");
+ }
+ }
netdev_unlock(bn->netdev);
}
@@ -2496,6 +2524,8 @@ static void bnge_tx_enable(struct bnge_net *bn)
/* Make sure napi polls see @dev_state change */
synchronize_net();
netif_tx_wake_all_queues(bn->netdev);
+ if (BNGE_LINK_IS_UP(bn->bd))
+ netif_carrier_on(bn->netdev);
}
static int bnge_open_core(struct bnge_net *bn)
@@ -2532,6 +2562,14 @@ static int bnge_open_core(struct bnge_net *bn)
bnge_enable_napi(bn);
+ rc = bnge_update_phy_setting(bn);
+ if (rc) {
+ netdev_warn(bn->netdev, "failed to update PHY settings (rc: %d)\n",
+ rc);
+ bd->link_info.phy_retry = true;
+ bd->link_info.phy_retry_expires = jiffies + 5 * HZ;
+ }
+
set_bit(BNGE_STATE_OPEN, &bd->state);
bnge_enable_int(bn);
@@ -2540,6 +2578,9 @@ static int bnge_open_core(struct bnge_net *bn)
mod_timer(&bn->timer, jiffies + bn->current_interval);
+ /* Poll link status and check for SFP+ module status */
+ bnge_get_port_module_status(bn);
+
return 0;
err_free_irq:
@@ -2591,6 +2632,7 @@ static int bnge_close(struct net_device *dev)
struct bnge_net *bn = netdev_priv(dev);
bnge_close_core(bn);
+ bnge_hwrm_shutdown_link(bn->bd);
return 0;
}
@@ -2848,6 +2890,10 @@ int bnge_netdev_alloc(struct bnge_dev *bd, int max_irqs)
bnge_init_l2_fltr_tbl(bn);
bnge_init_mac_addr(bd);
+ rc = bnge_probe_phy(bn, true);
+ if (rc)
+ goto err_free_workq;
+
netdev->request_ops_lock = true;
rc = register_netdev(netdev);
if (rc) {
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
index d2ccee725454..5636eb371e24 100644
--- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
+++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.h
@@ -9,6 +9,7 @@
#include <linux/refcount.h>
#include "bnge_db.h"
#include "bnge_hw_def.h"
+#include "bnge_link.h"
struct tx_bd {
__le32 tx_bd_len_flags_type;
@@ -230,6 +231,13 @@ enum bnge_net_state {
#define BNGE_TIMER_INTERVAL HZ
+enum bnge_sp_event {
+ BNGE_LINK_CHNG_SP_EVENT,
+ BNGE_LINK_SPEED_CHNG_SP_EVENT,
+ BNGE_LINK_CFG_CHANGE_SP_EVENT,
+ BNGE_UPDATE_PHY_SP_EVENT,
+};
+
struct bnge_net {
struct bnge_dev *bd;
struct net_device *netdev;
@@ -298,6 +306,9 @@ struct bnge_net {
struct timer_list timer;
struct workqueue_struct *bnge_pf_wq;
struct work_struct sp_task;
+ unsigned long sp_event;
+
+ struct bnge_ethtool_link_info eth_link_info;
};
#define BNGE_DEFAULT_RX_RING_SIZE 511
@@ -576,4 +587,5 @@ u8 *__bnge_alloc_rx_frag(struct bnge_net *bn, dma_addr_t *mapping,
struct bnge_rx_ring_info *rxr, gfp_t gfp);
int bnge_alloc_rx_netmem(struct bnge_net *bn, struct bnge_rx_ring_info *rxr,
u16 prod, gfp_t gfp);
+void __bnge_queue_sp_work(struct bnge_net *bn);
#endif /* _BNGE_NETDEV_H_ */
--
2.47.3
On 3/10/2026 8:10 PM, Bhargava Marreddy wrote:
> +void bnge_report_link(struct bnge_dev *bd)
> +{
> + if (BNGE_LINK_IS_UP(bd)) {
> + const char *signal = "";
> + const char *flow_ctrl;
> + const char *duplex;
> + u32 speed;
> + u16 fec;
> +
> + netif_carrier_on(bd->netdev);
> + speed = bnge_fw_to_ethtool_speed(bd->link_info.link_speed);
> + if (speed == SPEED_UNKNOWN) {
> + netdev_info(bd->netdev,
> + "NIC Link is Up, speed unknown\n");
> + return;
> + }
> + if (bd->link_info.duplex == BNGE_LINK_DUPLEX_FULL)
> + duplex = "full";
> + else
> + duplex = "half";
> + if (bd->link_info.pause == BNGE_LINK_PAUSE_BOTH)
> + flow_ctrl = "ON - receive & transmit";
> + else if (bd->link_info.pause == BNGE_LINK_PAUSE_TX)
> + flow_ctrl = "ON - transmit";
> + else if (bd->link_info.pause == BNGE_LINK_PAUSE_RX)
> + flow_ctrl = "ON - receive";
> + else
> + flow_ctrl = "none";
> + if (bd->link_info.phy_qcfg_resp.option_flags &
> + PORT_PHY_QCFG_RESP_OPTION_FLAGS_SIGNAL_MODE_KNOWN) {
> + u8 sig_mode = bd->link_info.active_fec_sig_mode &
> + PORT_PHY_QCFG_RESP_SIGNAL_MODE_MASK;
> + switch (sig_mode) {
> + case PORT_PHY_QCFG_RESP_SIGNAL_MODE_NRZ:
> + signal = "(NRZ) ";
> + break;
> + case PORT_PHY_QCFG_RESP_SIGNAL_MODE_PAM4:
> + signal = "(PAM4 56Gbps) ";
> + break;
> + case PORT_PHY_QCFG_RESP_SIGNAL_MODE_PAM4_112:
> + signal = "(PAM4 112Gbps) ";
> + break;
> + default:
> + break;
> + }
> + }
> + netdev_info(bd->netdev, "NIC Link is Up, %u Mbps %s%s duplex, Flow control: %s\n",
> + speed, signal, duplex, flow_ctrl);
> + fec = bd->link_info.fec_cfg;
> + if (!(fec & PORT_PHY_QCFG_RESP_FEC_CFG_FEC_NONE_SUPPORTED))
> + netdev_info(bd->netdev, "FEC autoneg %s encoding: %s\n",
> + (fec & BNGE_FEC_AUTONEG) ? "on" : "off",
> + bnge_report_fec(&bd->link_info));
> + } else {
> + netif_carrier_off(bd->netdev);
> + netdev_err(bd->netdev, "NIC Link is Down\n");
Is netdev_err() appropriate here? If this is not a hardware fault
netdev_info() might be more appropriate for a normal link-down
event.
> + }
> +}
Reviewed-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Thanks,
Alok
This is an AI-generated review of your patch. The human sending this
email has considered the AI review valid, or at least plausible.
For local reproduction steps see https://netdev-ai.bots.linux.dev/ai-local.html
---
bng_en: query PHY capabilities and report link status
This commit queries PHY capabilities and supported speeds from firmware,
retrieves current link state (speed, duplex, pause, FEC), logs the
information, and seeds initial link state during probe.
> diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_link.c b/drivers/net/ethernet/broadcom/bnge/bnge_link.c
> new file mode 100644
> index 000000000000..0c76cbc794f7
> --- /dev/null
> +++ b/drivers/net/ethernet/broadcom/bnge/bnge_link.c
[ ... ]
> +void bnge_init_ethtool_link_settings(struct bnge_net *bn)
> +{
> + struct bnge_ethtool_link_info *elink_info = &bn->eth_link_info;
> + struct bnge_link_info *link_info;
> + struct bnge_dev *bd = bn->bd;
> +
> + link_info = &bd->link_info;
> +
> + if (BNGE_AUTO_MODE(link_info->auto_mode)) {
> + elink_info->autoneg = BNGE_AUTONEG_SPEED;
> + if (link_info->auto_pause_setting &
> + PORT_PHY_CFG_REQ_AUTO_PAUSE_AUTONEG_PAUSE)
> + elink_info->autoneg |= BNGE_AUTONEG_FLOW_CTRL;
> + bnge_set_auto_speed(bn);
> + } else {
> + bnge_set_force_speed(bn);
> + elink_info->req_duplex = link_info->duplex_setting;
> + }
Does the forced-speed (else) branch need to clear elink_info->autoneg?
When called only at probe time on a zero-initialized struct, leaving
autoneg uninitialized is harmless. However, commit f833dbb3f7ab
('bng_en: add support for link async events') in this same series adds
a re-init call path from bnge_sp_task() in response to
BNGE_LINK_CFG_CHANGE_SP_EVENT async firmware events.
If the PHY transitions from auto-negotiation to forced-speed mode (e.g.,
via BMC/management configuration change), the stale BNGE_AUTONEG_SPEED
and BNGE_AUTONEG_FLOW_CTRL bits in elink_info->autoneg persist. This
causes:
bnge_hwrm_set_link_common() to send auto-negotiation configuration to
firmware instead of forced-speed:
if (elink_info->autoneg & BNGE_AUTONEG_SPEED) {
req->auto_mode |= PORT_PHY_CFG_REQ_AUTO_MODE_SPEED_MASK;
...
bnge_hwrm_set_pause_common() to configure auto-negotiation pause
instead of forced pause:
if (bn->eth_link_info.autoneg & BNGE_AUTONEG_FLOW_CTRL) {
req->auto_pause = PORT_PHY_CFG_REQ_AUTO_PAUSE_AUTONEG_PAUSE;
...
bnge_update_phy_setting() to make incorrect speed-change decisions:
if (!(elink_info->autoneg & BNGE_AUTONEG_SPEED)) {
if (BNGE_AUTO_MODE(link_info->auto_mode))
update_link = true;
The bnxt reference driver (bnxt_init_ethtool_link_settings) has the same
pattern, but this doesn't excuse introducing it in a new driver.
No fix was found later in the series (checked through 2d7643a78ddb).
> + if (elink_info->autoneg & BNGE_AUTONEG_FLOW_CTRL)
> + elink_info->req_flow_ctrl =
> + link_info->auto_pause_setting & BNGE_LINK_PAUSE_BOTH;
> + else
> + elink_info->req_flow_ctrl = link_info->force_pause_setting;
> +}
[ ... ]
> diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
> index edbb42efb70b..db3a19bbf75a 100644
> --- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
> +++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c
[ ... ]
> @@ -2532,6 +2562,14 @@ static int bnge_open_core(struct bnge_net *bn)
>
> bnge_enable_napi(bn);
>
> + rc = bnge_update_phy_setting(bn);
> + if (rc) {
> + netdev_warn(bn->netdev, "failed to update PHY settings (rc: %d)\n",
> + rc);
> + bd->link_info.phy_retry = true;
> + bd->link_info.phy_retry_expires = jiffies + 5 * HZ;
> + }
> +
Does stale phy_retry state from a previous open/close cycle cause spurious
warnings?
When bnge_update_phy_setting() fails during bnge_open_core(),
bd->link_info.phy_retry is set to true and phy_retry_expires is set to
jiffies + 5*HZ. Neither bnge_close_core() nor bnge_close() clears
phy_retry.
If the interface is closed and then reopened with a successful
bnge_update_phy_setting() call (rc=0), the stale phy_retry remains true
with an expired phy_retry_expires. On the next timer tick, bnge_timer()
sees:
if (bd->link_info.phy_retry) {
if (time_after(jiffies, bd->link_info.phy_retry_expires)) {
bd->link_info.phy_retry = false;
netdev_warn(bn->netdev, "failed to update PHY settings after maximum retries.\n");
and logs a spurious warning even though the PHY update succeeded on reopen.
No later fix was found in the series (searched git range
f342d5af0695..2d7643a78ddb).
> set_bit(BNGE_STATE_OPEN, &bd->state);
>
> bnge_enable_int(bn);
[ ... ]
--
pw-bot: cr
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