From patchwork Mon Aug 9 10:22:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ido Schimmel X-Patchwork-Id: 494871 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46363C4320A for ; Mon, 9 Aug 2021 10:24:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 26EB16108C for ; Mon, 9 Aug 2021 10:24:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235035AbhHIKYO (ORCPT ); Mon, 9 Aug 2021 06:24:14 -0400 Received: from out3-smtp.messagingengine.com ([66.111.4.27]:42387 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234952AbhHIKXv (ORCPT ); Mon, 9 Aug 2021 06:23:51 -0400 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.nyi.internal (Postfix) with ESMTP id D367F5C00DC; Mon, 9 Aug 2021 06:23:30 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute1.internal (MEProxy); Mon, 09 Aug 2021 06:23:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; bh=C6Q9o8UsvFAF2AjFF9MWegxvzWIjheShEtj9ZibZ9dM=; b=eWHVHCrO qL+/bYfVFCtqYcXOD03vm8GnDhF0V5MFUMZhmL2voB0jALJJvts6lJgrAMEc+vp/ vy2zKRdg61tEExOrKWuOT86aacldQCcQYD/eDBjmjC9RUo0nUrqd/U2fVfEEFKXE FlOHksXUrZmp0DQu+hlIdzuhZU0SiTqorJ6Ff4g0nlIUwdJzpIzNhtaGRy+qcFrf jc+F9Ydp6coYhWquzxqQY4q/MBvp0BCxgbWqISuw0FhmybH32J8dybHbGtYbl5jF uYlhBud55ni9QdHUkoz9OU/VBgYi0XbXE1iHeOO5f80XJcu5wwq4nUOAX+UcI7vO SoezvKR2kzJHxw== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvtddrjeejgddvkecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhephffvufffkffojghfggfgsedtkeertd ertddtnecuhfhrohhmpefkughoucfutghhihhmmhgvlhcuoehiughoshgthhesihguohhs tghhrdhorhhgqeenucggtffrrghtthgvrhhnpeduteeiveffffevleekleejffekhfekhe fgtdfftefhledvjefggfehgfevjeekhfenucevlhhushhtvghrufhiiigvpedvnecurfgr rhgrmhepmhgrihhlfhhrohhmpehiughoshgthhesihguohhstghhrdhorhhg X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 9 Aug 2021 06:23:28 -0400 (EDT) From: Ido Schimmel To: netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, andrew@lunn.ch, mkubecek@suse.cz, pali@kernel.org, vadimp@nvidia.com, mlxsw@nvidia.com, Ido Schimmel Subject: [RFC PATCH ethtool-next 4/6] ethtool: Print CMIS Module-Level Controls Date: Mon, 9 Aug 2021 13:22:54 +0300 Message-Id: <20210809102256.720119-5-idosch@idosch.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210809102256.720119-1-idosch@idosch.org> References: <20210809102256.720119-1-idosch@idosch.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ido Schimmel Print the CMIS Module-Level Controls when dumping EEPROM contents via the '-m' option. It can be used to understand low power mode enforcement by the host. Example output: # ethtool -m swp11 Identifier : 0x18 (QSFP-DD Double Density 8X Pluggable Transceiver (INF-8628)) ... Module State : 0x03 (ModuleReady) LowPwrAllowRequestHW : Off LowPwrRequestSW : Off # ethtool --set-module swp11 low-power on # ethtool -m swp11 Identifier : 0x18 (QSFP-DD Double Density 8X Pluggable Transceiver (INF-8628)) ... Module State : 0x01 (ModuleLowPwr) LowPwrAllowRequestHW : Off LowPwrRequestSW : On # ethtool --set-module swp11 low-power off # ethtool -m swp11 Identifier : 0x18 (QSFP-DD Double Density 8X Pluggable Transceiver (INF-8628)) ... Module State : 0x03 (ModuleReady) LowPwrAllowRequestHW : Off LowPwrRequestSW : Off In the above example, the LowPwrRequestHW signal is ignored and low power mode is controlled via software only. Signed-off-by: Ido Schimmel --- cmis.c | 17 +++++++++++++++++ cmis.h | 5 +++++ 2 files changed, 22 insertions(+) diff --git a/cmis.c b/cmis.c index f09219fd889d..f9b4720e6c2c 100644 --- a/cmis.c +++ b/cmis.c @@ -75,6 +75,21 @@ static void cmis_show_mod_state(const __u8 *id) } } +/** + * Print the current Module-Level Controls. Relevant documents: + * [1] CMIS Rev. 5, pag. 58, section 6.3.2.2, Table 6-12 + * [2] CMIS Rev. 5, pag. 111, section 8.2.6, Table 8-10 + */ +static void cmis_show_mod_lvl_controls(const __u8 *id) +{ + printf("\t%-41s : ", "LowPwrAllowRequestHW"); + printf("%s\n", ONOFF(id[CMIS_MODULE_CONTROL_OFFSET] & + CMIS_LOW_PWR_ALLOW_REQUEST_HW)); + printf("\t%-41s : ", "LowPwrRequestSW"); + printf("%s\n", ONOFF(id[CMIS_MODULE_CONTROL_OFFSET] & + CMIS_LOW_PWR_REQUEST_SW)); +} + /** * Print information about the device's power consumption. * Relevant documents: @@ -370,6 +385,7 @@ void qsfp_dd_show_all(const __u8 *id) cmis_show_vendor_info(id); cmis_show_rev_compliance(id); cmis_show_mod_state(id); + cmis_show_mod_lvl_controls(id); } void cmis_show_all(const struct ethtool_module_eeprom *page_zero, @@ -391,4 +407,5 @@ void cmis_show_all(const struct ethtool_module_eeprom *page_zero, cmis_show_vendor_info(page_zero_data); cmis_show_rev_compliance(page_zero_data); cmis_show_mod_state(page_zero_data); + cmis_show_mod_lvl_controls(page_zero_data); } diff --git a/cmis.h b/cmis.h index 197b70a2034d..5a314340eff0 100644 --- a/cmis.h +++ b/cmis.h @@ -21,6 +21,11 @@ #define CMIS_CURR_TEMP_OFFSET 0x0E #define CMIS_CURR_CURR_OFFSET 0x10 +/* Module-Level Controls (Page 0) */ +#define CMIS_MODULE_CONTROL_OFFSET 0x1A +#define CMIS_LOW_PWR_ALLOW_REQUEST_HW (1 << 6) +#define CMIS_LOW_PWR_REQUEST_SW (1 << 4) + #define CMIS_CTOR_OFFSET 0xCB /* Vendor related information (Page 0) */