From patchwork Wed Aug 18 15:53:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ido Schimmel X-Patchwork-Id: 499526 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 257E7C4338F for ; Wed, 18 Aug 2021 15:55:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1028B6103E for ; Wed, 18 Aug 2021 15:55:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240227AbhHRP4O (ORCPT ); Wed, 18 Aug 2021 11:56:14 -0400 Received: from new1-smtp.messagingengine.com ([66.111.4.221]:41027 "EHLO new1-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239949AbhHRPyL (ORCPT ); Wed, 18 Aug 2021 11:54:11 -0400 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailnew.nyi.internal (Postfix) with ESMTP id 18549583009; Wed, 18 Aug 2021 11:53:36 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute1.internal (MEProxy); Wed, 18 Aug 2021 11:53:36 -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=cBUUfoCrOivPh/vUS9TR87zPyMogoA73h5QwCRBB6j0=; b=U1RgdVWk ecq8DCIVjN59ORQ9ho4PxTiGLcn6t184AYIOgkF0yuqFxA5iRQyPRnpahWhCcM2d Nza0qMS1LlRo42GGkY6V1Efjw/mPHLMOy1kQ2cYL81+44tlmuZn2sL5M7hBaSEsx +LWUKMP+lbqGL1miyiDjRaBANeSZ5XRBDnth7OtnH9PLKXC6DRd+9hDEiJqwGeGg svLuaR4p8euPaO5t0YziEO34M/RVHf5gY7Ck3LMUA9FqA3e3XWV7Z9ZQFJ9BANcm QSv4xbOiXNmHJqHUhlLdaG6aAgqEWvN1YTTIDsJOVl3955wnZkcIWLLxIvBeum2V GfviX7DrqKAeyg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvtddrleehgdelfecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecunecujfgurhephffvufffkffojghfggfgsedtkeertd ertddtnecuhfhrohhmpefkughoucfutghhihhmmhgvlhcuoehiughoshgthhesihguohhs tghhrdhorhhgqeenucggtffrrghtthgvrhhnpeduteeiveffffevleekleejffekhfekhe fgtdfftefhledvjefggfehgfevjeekhfenucevlhhushhtvghrufhiiigvpedtnecurfgr rhgrmhepmhgrihhlfhhrohhmpehiughoshgthhesihguohhstghhrdhorhhg X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 18 Aug 2021 11:53:32 -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, jacob.e.keller@intel.com, jiri@nvidia.com, vadimp@nvidia.com, mlxsw@nvidia.com, Ido Schimmel Subject: [RFC PATCH ethtool-next v2 4/6] ethtool: Print CMIS Module-Level Controls Date: Wed, 18 Aug 2021 18:53:04 +0300 Message-Id: <20210818155306.1278356-5-idosch@idosch.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210818155306.1278356-1-idosch@idosch.org> References: <20210818155306.1278356-1-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 power-mode-policy low # 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 power-mode-policy high # 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 | 16 ++++++++++++++++ cmis.h | 5 +++++ 2 files changed, 21 insertions(+) diff --git a/cmis.c b/cmis.c index c5c1f02398f6..cd1c7d6e83c9 100644 --- a/cmis.c +++ b/cmis.c @@ -108,6 +108,20 @@ static void cmis_show_mod_fault_cause(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. @@ -405,6 +419,7 @@ void qsfp_dd_show_all(const __u8 *id) cmis_show_rev_compliance(id); cmis_show_mod_state(id); cmis_show_mod_fault_cause(id); + cmis_show_mod_lvl_controls(id); } void cmis_show_all(const struct ethtool_module_eeprom *page_zero, @@ -427,4 +442,5 @@ void cmis_show_all(const struct ethtool_module_eeprom *page_zero, cmis_show_rev_compliance(page_zero_data); cmis_show_mod_state(page_zero_data); cmis_show_mod_fault_cause(page_zero_data); + cmis_show_mod_lvl_controls(page_zero_data); } diff --git a/cmis.h b/cmis.h index 41383132cf8e..41288d4e88bc 100644 --- a/cmis.h +++ b/cmis.h @@ -28,6 +28,11 @@ #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) */