From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f175.google.com (mail-pf1-f175.google.com [209.85.210.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1950039CD05 for ; Mon, 31 Aug 2026 21:22:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788211370; cv=none; b=pOwFe9mmBCsdOb4KOycNjr9QlX0xRFmaxMibMcCBif+Rbo6PESkLRh6Ow8Pe0/LZnDEMD0R/+3cq5s+VwcY8k7o4/4AqaaORAvJkBmVar4L3hi24bssXCTT8xeYxQugNwyT0OL+yCUBQ2nkhyLha6sWRbdup5/2edZ0IdVYRNxk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788211370; c=relaxed/simple; bh=7ryBp4J/qEyf2/01p+hdf/8QZoypRA4clk5o6hi7rC0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gVi6oUyIECOgY944nj1KHUqPpDaovKjV7uvLBCdjkcowA15K6FTALbifn5Tlq4gySddh9+mz/QrvCjSa2YFI/iPRRa7leYrNVavNTaQaF3nEo8QfYZBzA5hS0O2rp2AT9yPMAHgs2bfNtMTeHhEpxaDH8PtE7scc+qDA5E8KLTk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=q12Bf5r7; arc=none smtp.client-ip=209.85.210.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="q12Bf5r7" Received: by mail-pf1-f175.google.com with SMTP id d2e1a72fcca58-855d2bfae95so371598b3a.1 for ; Mon, 31 Aug 2026 14:22:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1788211367; x=1788816167; 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:content-type; bh=VGnbInnCX26l95VXtFdZ6NsvhwlhpXxdn0FnqPhv8qQ=; b=q12Bf5r7sKohjI04oZLLDJ6a4MJC4epZAHYaKAqhFKImSrCGeSpDTfmx0aZqvMOtga xk1e1EhnuXvS8Kf/GKFGuYS7hVrgv5B00Zl6PzbQQZ3D5FEsg69JMfvTplRBTArq94SR JyYBueDae1PezWvxvoOG6zQUNq/Kt0FQ8FcE/FNjvSTkyjypFCBkVED0eOWxxmlVp7PC LYAj93CEM8s5yIOnRcVKAPz3HIpu57nEazWC+WkiGCb6BPDd0BaxLmHpP+ZTpP9KutUw sZLeEo61CbbxzX731xW8bVUO7OUlde41qnZsajV7k1rSHPPZ4uJzWslI6l4VfJgWuZwD KueA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788211367; x=1788816167; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=VGnbInnCX26l95VXtFdZ6NsvhwlhpXxdn0FnqPhv8qQ=; b=ejftZT3uTofBNIGjsIfamI8EqwtnIm86ehPH7AgBbRRtlCjtBQlqYOYrPmvZ2NLBp8 2VG0Ez0Mrvx+1F7rmLelQ3tSLcoXPk70xiMqmLfzWRuVsnovGTk8zKusl+cKtQ6IsDcH C1+gL0DJkRV55H++zaeVfa094QBsXjprqLdfk2D5na3e/VnuH28vrJE3GAuwNBZuMsE0 QbPC3OSEHYLK/dB8SCGgPVhLrvEpK1KgKhN8rRZJMSVrreI83Y+7MQq+auKnTblFC2Gy m/brB6Ue3rmrBjLAquq++Wp0wL86rBAViw2PyRVlEJJo10EO7h2u4bEKRvuLkBSFcz4h YRuQ== X-Forwarded-Encrypted: i=1; AHgh+RofffLDRuM6MiSH0AHoBBH85GopJKUHy+fowEo23HcuOr5Uzi9DlWYzM3CTWjqB1XsrAuA8QD+mPVbo4Ow=@vger.kernel.org X-Gm-Message-State: AFuF++nSZfwoRxg8/gV1fadrCdIpANb1qwS4aZWPscjn8INjA9j52p20 m/ukQ4iZR0A6q/Cf5CxSM6XRmubqZarBF/eZcvt/+oHAeysscbUtn/hr X-Gm-Gg: AR+sD12lZV3ovyPXXhAlXq5bJ8Xwj4gcSHGXZ3N7u6zS2IN59EsRsHasQD1S/yiltub SRcZcvH5DbDfbqTynr7QGjHGJnWq9ddm4Yq1O+EA8XLkTrr8eZxSDN+28/ce9Pd93tFnQD+loVT KJa4Zd6mQTj/tUcxDWdn2OuKZZJpFyHWZjZo1RGxTyYNpfr0gVabYo1sie4F3+kshKfwSnMDJUH AaEc0J+p8UOeMLXKhIhh3w3ZrPSwKuq/wjLvDY7Vdl7gSHc8zrMuXvwwQSEv8h0nXzZN5bnu5IA nFEFnJuu3cZEHmJxgZ/SSbRe3WTlyL3pf5s2x8wXYm7Y66iKO4aHMFF3F8+8R2JoKps21ZbXGw3 LI4mB5pFfapG3o+OLzKUtVeZmNqSUh7tLuX0fhXZ2zWx3YlfwV/TZ9RErw5g6MUJGNUcWRnf1o9 mHC67bzux60wOQLk6YiyRdUBI6HXlMCdx7zI9WSEtf1bNFz0ELrk6Bxg7LoA+sZpCECmwEvpJdj bS6Uw== X-Received: by 2002:a05:6a21:e344:b0:3cc:f9a0:3ada with SMTP id adf61e73a8af0-3d818ab8a23mr799208637.16.1788211367000; Mon, 31 Aug 2026 14:22:47 -0700 (PDT) Received: from localhost ([2620:10d:c090:500::6:bac7]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3286f8094dasm34373765eec.13.2026.08.31.14.22.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 31 Aug 2026 14:22:46 -0700 (PDT) From: Zinc Lim To: alexanderduyck@fb.com, kuba@kernel.org, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, linux@roeck-us.net, horms@kernel.org, mohsin.bashr@gmail.com Cc: kernel-team@meta.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, zinclim@meta.com, limzhineng2@gmail.com Subject: [PATCH net-next v2 4/6] eth: fbnic: report temperature and voltage thresholds via hwmon Date: Mon, 31 Aug 2026 14:22:32 -0700 Message-ID: <20260831212234.1212971-5-limzhineng2@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260831212234.1212971-1-limzhineng2@gmail.com> References: <20260831212234.1212971-1-limzhineng2@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The firmware capability response carries per-board temperature (min/max/crit) and voltage (min/max) thresholds. Parse and store them in fbnic_fw_cap, and expose them through the hwmon interface as temp1_{min,max,crit} and in0_{min,max}. The thresholds are always exposed. Values the firmware did not report are stored as the FBNIC_SENSOR_NO_DATA sentinel in the capability response parser, and a read of such an attribute returns -ENODATA. Signed-off-by: Zinc Lim --- drivers/net/ethernet/meta/fbnic/fbnic_fw.c | 21 ++++++ drivers/net/ethernet/meta/fbnic/fbnic_fw.h | 14 ++++ drivers/net/ethernet/meta/fbnic/fbnic_hwmon.c | 67 ++++++++++++++----- 3 files changed, 87 insertions(+), 15 deletions(-) diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_fw.c b/drivers/net/ethernet/meta/fbnic/fbnic_fw.c index 283d25fae79e..d814bd4041a0 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_fw.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_fw.c @@ -575,6 +575,11 @@ static const struct fbnic_tlv_index fbnic_fw_cap_resp_index[] = { FBNIC_TLV_ATTR_STRING(FBNIC_FW_CAP_RESP_UEFI_COMMIT_STR, FBNIC_FW_CAP_RESP_COMMIT_MAX_SIZE), FBNIC_TLV_ATTR_U32(FBNIC_FW_CAP_RESP_ANTI_ROLLBACK_VERSION), + FBNIC_TLV_ATTR_S32(FBNIC_FW_CAP_RESP_TEMP_MIN), + FBNIC_TLV_ATTR_S32(FBNIC_FW_CAP_RESP_TEMP_MAX), + FBNIC_TLV_ATTR_S32(FBNIC_FW_CAP_RESP_TEMP_CRIT), + FBNIC_TLV_ATTR_S32(FBNIC_FW_CAP_RESP_VOLT_MIN), + FBNIC_TLV_ATTR_S32(FBNIC_FW_CAP_RESP_VOLT_MAX), FBNIC_TLV_ATTR_LAST }; @@ -702,6 +707,22 @@ static int fbnic_fw_parse_cap_resp(void *opaque, struct fbnic_tlv_msg **results) /* Always assume we need a BMC reinit */ fbd->fw_cap.need_bmc_tcam_reinit = true; + fbd->fw_cap.temp.min = + fbnic_tlv_attr_get_signed(results[FBNIC_FW_CAP_RESP_TEMP_MIN], + FBNIC_SENSOR_NO_DATA); + fbd->fw_cap.temp.max = + fbnic_tlv_attr_get_signed(results[FBNIC_FW_CAP_RESP_TEMP_MAX], + FBNIC_SENSOR_NO_DATA); + fbd->fw_cap.temp.crit = + fbnic_tlv_attr_get_signed(results[FBNIC_FW_CAP_RESP_TEMP_CRIT], + FBNIC_SENSOR_NO_DATA); + fbd->fw_cap.volt.min = + fbnic_tlv_attr_get_signed(results[FBNIC_FW_CAP_RESP_VOLT_MIN], + FBNIC_SENSOR_NO_DATA); + fbd->fw_cap.volt.max = + fbnic_tlv_attr_get_signed(results[FBNIC_FW_CAP_RESP_VOLT_MAX], + FBNIC_SENSOR_NO_DATA); + return 0; } diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_fw.h b/drivers/net/ethernet/meta/fbnic/fbnic_fw.h index 42a5f83ddb45..68ffd49e0cdd 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_fw.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_fw.h @@ -51,6 +51,12 @@ struct fbnic_fw_ver { */ #define FBNIC_SENSOR_NO_DATA S32_MIN +struct fbnic_threshold { + s32 min; + s32 max; + s32 crit; +}; + struct fbnic_fw_cap { struct { struct fbnic_fw_ver mgmt, bootloader; @@ -67,6 +73,8 @@ struct fbnic_fw_cap { u8 link_speed; u8 link_fec; u32 anti_rollback_version; + struct fbnic_threshold temp; + struct fbnic_threshold volt; }; struct fbnic_fw_completion { @@ -249,6 +257,12 @@ enum { FBNIC_FW_CAP_RESP_UEFI_VERSION = 0x11, FBNIC_FW_CAP_RESP_UEFI_COMMIT_STR = 0x12, FBNIC_FW_CAP_RESP_ANTI_ROLLBACK_VERSION = 0x15, + /* 0x16 and 0x17 are reserved for future use */ + FBNIC_FW_CAP_RESP_TEMP_MIN = 0x18, + FBNIC_FW_CAP_RESP_TEMP_MAX = 0x19, + FBNIC_FW_CAP_RESP_TEMP_CRIT = 0x1a, + FBNIC_FW_CAP_RESP_VOLT_MIN = 0x1b, + FBNIC_FW_CAP_RESP_VOLT_MAX = 0x1c, FBNIC_FW_CAP_RESP_MSG_MAX }; diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_hwmon.c b/drivers/net/ethernet/meta/fbnic/fbnic_hwmon.c index f35cb0065093..4938f7b39140 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_hwmon.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_hwmon.c @@ -7,16 +7,6 @@ #include "fbnic.h" #include "fbnic_mac.h" -static int fbnic_hwmon_sensor_id(enum hwmon_sensor_types type) -{ - if (type == hwmon_temp) - return FBNIC_SENSOR_TEMP; - if (type == hwmon_in) - return FBNIC_SENSOR_VOLTAGE; - - return -EOPNOTSUPP; -} - static umode_t fbnic_hwmon_is_visible(const void *drvdata, enum hwmon_sensor_types type, u32 attr, int channel) @@ -88,14 +78,58 @@ static int fbnic_hwmon_sensor_read(struct fbnic_dev *fbd, int id, long *val) return err; } +static int fbnic_hwmon_read_threshold(long thr, long *val) +{ + if (thr == FBNIC_SENSOR_NO_DATA) + return -ENODATA; + + *val = thr; + return 0; +} + +static int fbnic_hwmon_temp_read(struct fbnic_dev *fbd, u32 attr, long *val) +{ + switch (attr) { + case hwmon_temp_input: + return fbnic_hwmon_sensor_read(fbd, FBNIC_SENSOR_TEMP, val); + case hwmon_temp_min: + return fbnic_hwmon_read_threshold(fbd->fw_cap.temp.min, val); + case hwmon_temp_max: + return fbnic_hwmon_read_threshold(fbd->fw_cap.temp.max, val); + case hwmon_temp_crit: + return fbnic_hwmon_read_threshold(fbd->fw_cap.temp.crit, val); + default: + return -EOPNOTSUPP; + } +} + +static int fbnic_hwmon_in_read(struct fbnic_dev *fbd, u32 attr, long *val) +{ + switch (attr) { + case hwmon_in_input: + return fbnic_hwmon_sensor_read(fbd, FBNIC_SENSOR_VOLTAGE, val); + case hwmon_in_min: + return fbnic_hwmon_read_threshold(fbd->fw_cap.volt.min, val); + case hwmon_in_max: + return fbnic_hwmon_read_threshold(fbd->fw_cap.volt.max, val); + default: + return -EOPNOTSUPP; + } +} + static int fbnic_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *val) { struct fbnic_dev *fbd = dev_get_drvdata(dev); - int id; - id = fbnic_hwmon_sensor_id(type); - return id < 0 ? id : fbnic_hwmon_sensor_read(fbd, id, val); + switch (type) { + case hwmon_temp: + return fbnic_hwmon_temp_read(fbd, attr, val); + case hwmon_in: + return fbnic_hwmon_in_read(fbd, attr, val); + default: + return -EOPNOTSUPP; + } } static const struct hwmon_ops fbnic_hwmon_ops = { @@ -104,8 +138,11 @@ static const struct hwmon_ops fbnic_hwmon_ops = { }; static const struct hwmon_channel_info *fbnic_hwmon_info[] = { - HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT), - HWMON_CHANNEL_INFO(in, HWMON_I_INPUT), + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX | + HWMON_T_CRIT), + HWMON_CHANNEL_INFO(in, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX), NULL }; -- 2.53.0-Meta