From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 8D1A8CA9EC7 for ; Wed, 30 Oct 2019 15:55:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 538B9208C0 for ; Wed, 30 Oct 2019 15:55:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="YQ8JrjFk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728508AbfJ3PzC (ORCPT ); Wed, 30 Oct 2019 11:55:02 -0400 Received: from mail-wr1-f65.google.com ([209.85.221.65]:37607 "EHLO mail-wr1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727950AbfJ3Py7 (ORCPT ); Wed, 30 Oct 2019 11:54:59 -0400 Received: by mail-wr1-f65.google.com with SMTP id e11so2912744wrv.4 for ; Wed, 30 Oct 2019 08:54:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=FgmJFc69aJGBfN43Lu4UDpX3eu2jhzY+mRsGnXR2dN8=; b=YQ8JrjFkp6XLfBlPGUCLqHhaC6ro+clm5a1vsZRrj0w1wRsTIWAq0+OP/rWqhne4JZ rTzIjBLdfjYc+US6nnKjMu07xq0zXfLtC3COLWnr04KS/RUqUCWPmRdhPJ7K03Qub2LC wnVdo4PZcj2il8ZcWV8GQeSE4nT0O2MSgdAbw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=FgmJFc69aJGBfN43Lu4UDpX3eu2jhzY+mRsGnXR2dN8=; b=kZGyRx02Un6IWrkTBLmqNiCU9LI+tTuBRS4a0fJsvEU7n4x9HfTm28Xw8vjGYdPqc8 xZDw3ykzYqB8Ypjp71pJ56LNCRqaGyrJ2s1Q8vymYdB/F7sN/2aAU/gapZwEnxDjq7RD 2lIOvFMhUpPQ4lIQj8gOdvd5QqRH7a0ufLmG0tTL8YdAPK0JFsn+ssV6alEbvD7Mxpwu SWj99nu1tOZg4PLAACWadiBWeEA6Y22gBESL6TYuq2go3q27UPxiVeSQD4E/exVEZ8Bd W1PFkIyqwu06eIQkuC67+aFZTJNpBi8LVBkkAOWWQU7RHHSivAfm5gT+mjbRWTSV2KEH kW/g== X-Gm-Message-State: APjAAAUJzuTZI6aLAEL/O+on5qfHdqv9S7BXiiOP3pZ+uR4xP0efM2y2 w9RKTW+4fkTr4HjB16slI9pRRg== X-Google-Smtp-Source: APXvYqw1WJjIbOmeus2GIdvdbFV9JrCvx3qonEXRRGFUrDLsS2mD90po6hHglU+cnBz+gj9F81bRmw== X-Received: by 2002:adf:ed84:: with SMTP id c4mr482461wro.333.1572450896061; Wed, 30 Oct 2019 08:54:56 -0700 (PDT) Received: from shitalt.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id g184sm499931wma.8.2019.10.30.08.54.49 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 30 Oct 2019 08:54:55 -0700 (PDT) From: Sheetal Tigadoli To: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= , Greg Kroah-Hartman , Michal Simek , Rajan Vaja , Scott Branden , Ray Jui , Vikram Prakash , Jens Wiklander , Michael Chan , "David S. Miller" , Vikas Gupta , Vasundhara Volam Cc: Linux Kernel Mailing List , tee-dev@lists.linaro.org, bcm-kernel-feedback-list@broadcom.com, netdev@vger.kernel.org, Jakub Kicinski , Sheetal Tigadoli Subject: [PATCH net-next V4 3/3] bnxt_en: Add support to collect crash dump via ethtool Date: Wed, 30 Oct 2019 21:24:24 +0530 Message-Id: <1572450864-16761-4-git-send-email-sheetal.tigadoli@broadcom.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1572450864-16761-1-git-send-email-sheetal.tigadoli@broadcom.com> References: <1572450864-16761-1-git-send-email-sheetal.tigadoli@broadcom.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Vasundhara Volam Driver supports 2 types of core dumps. 1. Live dump - Firmware dump when system is up and running. 2. Crash dump - Dump which is collected during firmware crash that can be retrieved after recovery. Crash dump is currently supported only on specific 58800 chips which can be retrieved using OP-TEE API only, as firmware cannot access this region directly. User needs to set the dump flag using following command before initiating the dump collection: $ ethtool -W|--set-dump eth0 N Where N is "0" for live dump and "1" for crash dump Command to collect the dump after setting the flag: $ ethtool -w eth0 data Filename v3: Modify set_dump to support even when CONFIG_TEE_BNXT_FW=n. Also change log message to netdev_info(). Cc: Jakub Kicinski Cc: Michael Chan Signed-off-by: Vasundhara Volam Signed-off-by: Sheetal Tigadoli --- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 3 ++ .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 37 ++++++++++++++++++- .../net/ethernet/broadcom/bnxt/bnxt_ethtool.h | 2 + 3 files changed, 40 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 09437150f818..3e7d1fb1b0b1 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -1807,6 +1807,9 @@ struct bnxt { u8 num_leds; struct bnxt_led_info leds[BNXT_MAX_LED]; + u16 dump_flag; +#define BNXT_DUMP_LIVE 0 +#define BNXT_DUMP_CRASH 1 struct bpf_prog *xdp_prog; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index 51c140476717..f2220b826d61 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -3311,6 +3311,24 @@ static int bnxt_get_coredump(struct bnxt *bp, void *buf, u32 *dump_len) return rc; } +static int bnxt_set_dump(struct net_device *dev, struct ethtool_dump *dump) +{ + struct bnxt *bp = netdev_priv(dev); + + if (dump->flag > BNXT_DUMP_CRASH) { + netdev_info(dev, "Supports only Live(0) and Crash(1) dumps.\n"); + return -EINVAL; + } + + if (!IS_ENABLED(CONFIG_TEE_BNXT_FW) && dump->flag == BNXT_DUMP_CRASH) { + netdev_info(dev, "Cannot collect crash dump as TEE_BNXT_FW config option is not enabled.\n"); + return -EOPNOTSUPP; + } + + bp->dump_flag = dump->flag; + return 0; +} + static int bnxt_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump) { struct bnxt *bp = netdev_priv(dev); @@ -3323,7 +3341,12 @@ static int bnxt_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump) bp->ver_resp.hwrm_fw_bld_8b << 8 | bp->ver_resp.hwrm_fw_rsvd_8b; - return bnxt_get_coredump(bp, NULL, &dump->len); + dump->flag = bp->dump_flag; + if (bp->dump_flag == BNXT_DUMP_CRASH) + dump->len = BNXT_CRASH_DUMP_LEN; + else + bnxt_get_coredump(bp, NULL, &dump->len); + return 0; } static int bnxt_get_dump_data(struct net_device *dev, struct ethtool_dump *dump, @@ -3336,7 +3359,16 @@ static int bnxt_get_dump_data(struct net_device *dev, struct ethtool_dump *dump, memset(buf, 0, dump->len); - return bnxt_get_coredump(bp, buf, &dump->len); + dump->flag = bp->dump_flag; + if (dump->flag == BNXT_DUMP_CRASH) { +#ifdef CONFIG_TEE_BNXT_FW + return tee_bnxt_copy_coredump(buf, 0, dump->len); +#endif + } else { + return bnxt_get_coredump(bp, buf, &dump->len); + } + + return 0; } void bnxt_ethtool_init(struct bnxt *bp) @@ -3446,6 +3478,7 @@ const struct ethtool_ops bnxt_ethtool_ops = { .set_phys_id = bnxt_set_phys_id, .self_test = bnxt_self_test, .reset = bnxt_reset, + .set_dump = bnxt_set_dump, .get_dump_flag = bnxt_get_dump_flag, .get_dump_data = bnxt_get_dump_data, }; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h index b5b65b3f8534..01de7e79d14f 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.h @@ -59,6 +59,8 @@ struct hwrm_dbg_cmn_output { #define HWRM_DBG_CMN_FLAGS_MORE 1 }; +#define BNXT_CRASH_DUMP_LEN (8 << 20) + #define BNXT_LED_DFLT_ENA \ (PORT_LED_CFG_REQ_ENABLES_LED0_ID | \ PORT_LED_CFG_REQ_ENABLES_LED0_STATE | \ -- 2.17.1