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[144.49.247.103]) by smtp-relay.gmail.com with ESMTPS id d9443c01a7336-2ad74fd698bsm8760065ad.33.2026.02.23.08.37.45 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 23 Feb 2026 08:37:45 -0800 (PST) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-pl1-f199.google.com with SMTP id d9443c01a7336-2a8c273332cso429400125ad.1 for ; Mon, 23 Feb 2026 08:37:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1771864664; x=1772469464; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=QXqcrYrUMpsk0hJeQOkUygfghc5Wbge/uByCmNLlVLs=; b=HbwLO5xNW1o6MbwmKV9qLsdZnuMJu4Un2dFmJcSHVldyro+2Y75aXPLSnb3TCRr9gL ANuGl/+AujIByV5fYAKl1h51CVW99OBZ8V7ByE5axaV3xvjgAyRGSsCyYA//2c3AY53V gzWR1YC8yba95PMR3ksI8YznFkkx60h6Gclzk= X-Forwarded-Encrypted: i=1; AJvYcCUesdghHc379A7OK418v6VRjCmnUEqZ7iPTUlD8RbPCiWPn3jNovR33aMKu8EOO4qoxmpH3NkYTzLRRgKI=@vger.kernel.org X-Received: by 2002:a17:902:d502:b0:2a9:410:2413 with SMTP id d9443c01a7336-2ad7450552fmr95590065ad.29.1771864663918; Mon, 23 Feb 2026 08:37:43 -0800 (PST) X-Received: by 2002:a17:902:d502:b0:2a9:410:2413 with SMTP id d9443c01a7336-2ad7450552fmr95589755ad.29.1771864663405; Mon, 23 Feb 2026 08:37:43 -0800 (PST) Received: from localhost.localdomain ([192.19.203.250]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ad74e3445fsm96763825ad.13.2026.02.23.08.37.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Feb 2026 08:37:43 -0800 (PST) From: Bhargava Marreddy To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, michael.chan@broadcom.com, pavan.chebbi@broadcom.com, vsrama-krishna.nemani@broadcom.com, vikas.gupta@broadcom.com, Bhargava Marreddy , Rajashekar Hudumula , Ajit Kumar Khaparde Subject: [PATCH net-next 4/7] bng_en: add support for link async events Date: Mon, 23 Feb 2026 22:06:38 +0530 Message-ID: <20260223163641.755200-5-bhargava.marreddy@broadcom.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260223163641.755200-1-bhargava.marreddy@broadcom.com> References: <20260223163641.755200-1-bhargava.marreddy@broadcom.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e Content-Type: text/plain; charset="utf-8" Register for firmware asynchronous events, including link-status, link-speed, and PHY configuration changes. Upon event reception, re-query the PHY and update ethtool settings accordingly. Signed-off-by: Bhargava Marreddy Reviewed-by: Vikas Gupta Reviewed-by: Rajashekar Hudumula Reviewed-by: Ajit Kumar Khaparde --- .../ethernet/broadcom/bnge/bnge_hwrm_lib.c | 17 ++++++- .../net/ethernet/broadcom/bnge/bnge_link.c | 47 +++++++++++++++++++ .../net/ethernet/broadcom/bnge/bnge_link.h | 4 ++ .../net/ethernet/broadcom/bnge/bnge_netdev.c | 19 ++++++++ .../net/ethernet/broadcom/bnge/bnge_txrx.c | 35 ++++++++++++-- 5 files changed, 117 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c b/drivers/n= et/ethernet/broadcom/bnge/bnge_hwrm_lib.c index 3e6a5bd45a0..43d5ba15728 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c +++ b/drivers/net/ethernet/broadcom/bnge/bnge_hwrm_lib.c @@ -15,6 +15,13 @@ #include "bnge_rmem.h" #include "bnge_resc.h" =20 +static const u16 bnge_async_events_arr[] =3D { + ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE, + ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CHANGE, + ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CFG_CHANGE, + ASYNC_EVENT_CMPL_EVENT_ID_PORT_PHY_CFG_CHANGE, +}; + int bnge_hwrm_ver_get(struct bnge_dev *bd) { u32 dev_caps_cfg, hwrm_ver, hwrm_spec_code; @@ -166,10 +173,12 @@ int bnge_hwrm_fw_set_time(struct bnge_dev *bd) =20 int bnge_hwrm_func_drv_rgtr(struct bnge_dev *bd) { + DECLARE_BITMAP(async_events_bmap, 256); + u32 *events =3D (u32 *)async_events_bmap; struct hwrm_func_drv_rgtr_output *resp; struct hwrm_func_drv_rgtr_input *req; u32 flags; - int rc; + int rc, i; =20 rc =3D bnge_hwrm_req_init(bd, req, HWRM_FUNC_DRV_RGTR); if (rc) @@ -190,6 +199,12 @@ int bnge_hwrm_func_drv_rgtr(struct bnge_dev *bd) req->ver_min =3D cpu_to_le16(DRV_VER_MIN); req->ver_upd =3D cpu_to_le16(DRV_VER_UPD); =20 + memset(async_events_bmap, 0, sizeof(async_events_bmap)); + for (i =3D 0; i < ARRAY_SIZE(bnge_async_events_arr); i++) + __set_bit(bnge_async_events_arr[i], async_events_bmap); + for (i =3D 0; i < ARRAY_SIZE(req->async_event_fwd); i++) + req->async_event_fwd[i] |=3D cpu_to_le32(events[i]); + resp =3D bnge_hwrm_req_hold(bd, req); rc =3D bnge_hwrm_req_send(bd, req); if (!rc) { diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_link.c b/drivers/net/e= thernet/broadcom/bnge/bnge_link.c index f037229db7b..9f0f9b4db1d 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_link.c +++ b/drivers/net/ethernet/broadcom/bnge/bnge_link.c @@ -94,6 +94,21 @@ static void bnge_set_auto_speed(struct bnge_net *bn) elink_info->advertising_pam4 =3D link_info->auto_pam4_link_speeds; } =20 +static u16 bnge_get_force_speed(struct bnge_net *bn) +{ + struct bnge_ethtool_link_info *elink_info =3D &bn->eth_link_info; + struct bnge_link_info *link_info; + struct bnge_dev *bd =3D bn->bd; + + link_info =3D &bd->link_info; + + if (bd->phy_flags & BNGE_PHY_FL_SPEEDS2) + return link_info->force_link_speed2; + if (elink_info->req_signal_mode =3D=3D BNGE_SIG_MODE_PAM4) + return link_info->force_pam4_link_speed; + return link_info->force_link_speed; +} + static void bnge_set_force_speed(struct bnge_net *bn) { struct bnge_ethtool_link_info *elink_info =3D &bn->eth_link_info; @@ -1262,3 +1277,35 @@ int bnge_set_link_ksettings(struct net_device *dev, =20 return rc; } + +void bnge_link_async_event_process(struct bnge_net *bn, + u16 event_id, u32 evt_data) +{ + switch (event_id) { + case ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CFG_CHANGE: { + struct bnge_ethtool_link_info *elink_info =3D &bn->eth_link_info; + + /* print unsupported speed warning in forced speed mode only */ + if (!(elink_info->autoneg & BNGE_AUTONEG_SPEED) && + (evt_data & BNGE_SPEED_CFG_CHANGE_SP_NOT_SUPP)) { + u16 fw_speed =3D bnge_get_force_speed(bn); + u32 speed =3D bnge_fw_to_ethtool_speed(fw_speed); + + if (speed !=3D SPEED_UNKNOWN) + netdev_warn(bn->netdev, "Link speed %d no longer supported\n", + speed); + } + set_bit(BNGE_LINK_SPEED_CHNG_SP_EVENT, &bn->sp_event); + fallthrough; + } + case ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CHANGE: + case ASYNC_EVENT_CMPL_EVENT_ID_PORT_PHY_CFG_CHANGE: + set_bit(BNGE_LINK_CFG_CHANGE_SP_EVENT, &bn->sp_event); + fallthrough; + case ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE: + set_bit(BNGE_LINK_CHNG_SP_EVENT, &bn->sp_event); + break; + default: + break; + } +} diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_link.h b/drivers/net/e= thernet/broadcom/bnge/bnge_link.h index 12be5cab579..bdcb75a941c 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_link.h +++ b/drivers/net/ethernet/broadcom/bnge/bnge_link.h @@ -197,4 +197,8 @@ int bnge_set_link_ksettings(struct net_device *dev, int bnge_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *lk_ksettings); u32 bnge_get_link(struct net_device *dev); +#define BNGE_SPEED_CFG_CHANGE_SP_NOT_SUPP BIT(17) + +void bnge_link_async_event_process(struct bnge_net *bn, + u16 event_id, u32 evt_data); #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 2ad0021d38e..4909727547e 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c +++ b/drivers/net/ethernet/broadcom/bnge/bnge_netdev.c @@ -164,6 +164,25 @@ static void bnge_sp_task(struct work_struct *work) } } =20 + if (test_and_clear_bit(BNGE_LINK_CHNG_SP_EVENT, &bn->sp_event)) { + int rc; + + mutex_lock(&bd->link_lock); + if (test_and_clear_bit(BNGE_LINK_SPEED_CHNG_SP_EVENT, + &bn->sp_event)) + bnge_hwrm_phy_qcaps(bd); + + rc =3D bnge_update_link(bn, true); + if (rc) + netdev_err(bn->netdev, "SP task cannot update link (rc: %d)\n", + rc); + + if (test_and_clear_bit(BNGE_LINK_CFG_CHANGE_SP_EVENT, + &bn->sp_event)) + bnge_init_ethtool_link_settings(bn); + mutex_unlock(&bd->link_lock); + } + /* Ensure all sp_task work is done before clearing the state */ smp_mb__before_atomic(); clear_bit(BNGE_STATE_IN_SP_TASK, &bn->state); diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_txrx.c b/drivers/net/e= thernet/broadcom/bnge/bnge_txrx.c index a2616f03755..88f9cf1db30 100644 --- a/drivers/net/ethernet/broadcom/bnge/bnge_txrx.c +++ b/drivers/net/ethernet/broadcom/bnge/bnge_txrx.c @@ -1128,6 +1128,29 @@ static void __bnge_poll_work_done(struct bnge_net *b= n, struct bnge_napi *bnapi, } } =20 +static void bnge_async_event_process(struct bnge_net *bn, + struct hwrm_async_event_cmpl *cmpl) +{ + u16 event_id =3D le16_to_cpu(cmpl->event_id); + u32 data1 =3D le32_to_cpu(cmpl->event_data1); + u32 data2 =3D le32_to_cpu(cmpl->event_data2); + + netdev_dbg(bn->netdev, "hwrm event 0x%x {0x%x, 0x%x}\n", + event_id, data1, data2); + + switch (event_id) { + case ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CFG_CHANGE: + case ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CHANGE: + case ASYNC_EVENT_CMPL_EVENT_ID_PORT_PHY_CFG_CHANGE: + case ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE: + bnge_link_async_event_process(bn, event_id, data1); + break; + default: + return; + } + __bnge_queue_sp_work(bn); +} + static void bnge_hwrm_update_token(struct bnge_dev *bd, u16 seq_id, enum bnge_hwrm_wait_state state) @@ -1146,7 +1169,7 @@ bnge_hwrm_update_token(struct bnge_dev *bd, u16 seq_i= d, dev_err(bd->dev, "Invalid hwrm seq id %d\n", seq_id); } =20 -static int bnge_hwrm_handler(struct bnge_dev *bd, struct tx_cmp *txcmp) +static int bnge_hwrm_handler(struct bnge_net *bn, struct tx_cmp *txcmp) { struct hwrm_cmpl *h_cmpl =3D (struct hwrm_cmpl *)txcmp; u16 cmpl_type =3D TX_CMP_TYPE(txcmp), seq_id; @@ -1154,10 +1177,14 @@ static int bnge_hwrm_handler(struct bnge_dev *bd, s= truct tx_cmp *txcmp) switch (cmpl_type) { case CMPL_BASE_TYPE_HWRM_DONE: seq_id =3D le16_to_cpu(h_cmpl->sequence_id); - bnge_hwrm_update_token(bd, seq_id, BNGE_HWRM_COMPLETE); + bnge_hwrm_update_token(bn->bd, seq_id, BNGE_HWRM_COMPLETE); break; =20 case CMPL_BASE_TYPE_HWRM_ASYNC_EVENT: + bnge_async_event_process(bn, + (struct hwrm_async_event_cmpl *)txcmp); + break; + default: break; } @@ -1235,7 +1262,7 @@ static int __bnge_poll_work(struct bnge_net *bn, stru= ct bnge_cp_ring_info *cpr, } else if (unlikely(cmp_type =3D=3D CMPL_BASE_TYPE_HWRM_DONE || cmp_type =3D=3D CMPL_BASE_TYPE_HWRM_FWD_REQ || cmp_type =3D=3D CMPL_BA_TY_HWRM_ASY_EVT)) { - bnge_hwrm_handler(bn->bd, txcmp); + bnge_hwrm_handler(bn, txcmp); } raw_cons =3D NEXT_RAW_CMP(raw_cons); =20 @@ -1355,7 +1382,7 @@ int bnge_napi_poll(struct napi_struct *napi, int budg= et) budget - work_done); nqr->has_more_work |=3D cpr->has_more_work; } else { - bnge_hwrm_handler(bn->bd, (struct tx_cmp *)nqcmp); + bnge_hwrm_handler(bn, (struct tx_cmp *)nqcmp); } raw_cons =3D NEXT_RAW_CMP(raw_cons); } --=20 2.47.3