From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qt1-f175.google.com (mail-qt1-f175.google.com [209.85.160.175]) (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 026301CFB6 for ; Sat, 13 Jul 2024 23:44:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720914245; cv=none; b=VnuhSjv1qezJtHGURuraTZdItczdAujRXpxJmE3rh4icpUugWxggIzWxCJMoD0CwPjDklFlbcRXqKWK0Zx06Ur7PPRF2edojU2C7NabR3FHWZPY2MYcbv6DpSQ1FrcPE71h1ZZmSlD5CXAy3D5BcQ371/9lRlt0Sdb3d41tF+5g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720914245; c=relaxed/simple; bh=pWkCACW6CMmRMxpuNn5/+muyCuGRXZODp6Itx6SIoTs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nwasMZHkDRTgyk2kCcs+rY3W3yM62F3pL94rEdEvIxNnkzqCuVSIt0a0GrV7z3nqPJJdEZYPg+5UUKnVRgr4rXBR8oHl0HQT9LxO9Ff7kosScVGaAd5Yy+1vYf4OVFcJ6jTasf2sxlaTmDzh8LqxdCWe9X2IYU2N63mYu/86eZA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com; spf=fail smtp.mailfrom=broadcom.com; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b=QOQjI8Bj; arc=none smtp.client-ip=209.85.160.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=broadcom.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="QOQjI8Bj" Received: by mail-qt1-f175.google.com with SMTP id d75a77b69052e-44f666d9607so143001cf.1 for ; Sat, 13 Jul 2024 16:44:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1720914243; x=1721519043; darn=vger.kernel.org; h=mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:from:to:cc:subject:date:message-id:reply-to; bh=Ht24nYjeEFaELDrdwiXs89uTywrxH7j64O/abMLZNFw=; b=QOQjI8BjlwlnbPAeYY6IUv+cXzN+RPTCuxO0ppVh4VQP7Yap7I9bOkTOdRxnkE24rO nh2zDqB+vWseGqrCinHsohL+XUkQ47cDKjlms1E0wghH0UzwZimFSwr06Re8YRSt2+QV kh5WVXCee1qyHZom9QQW38+O4+iFbaY8p3AiQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720914243; x=1721519043; h=mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Ht24nYjeEFaELDrdwiXs89uTywrxH7j64O/abMLZNFw=; b=HtVG78dVilOWORUM1+JfunG7s/PGehmiyLf2Yx8BtUovfKDLdkIYgqctfoPuAZXa2n zTk8Sh/49Z+4oS7VhdcyUzYPsKO2LpmWdFrVXQujGjD5F2/PvuA3UjmkJcATpeo447bT ij8vog3VWtSn1F+F2JUU8zQ2yJ/h+qxgLrA2GyPpelUI2z9RCz8OkJGTdC1ZuPmLoyrN WDuhu6eckUkpc7OWz8ZyDA83l6ELJklN/olyC2AFXbCL650SdIYPMB3MlFyo5rpFUxKo SwAy2KNazA9EuVGnZtVeROxAvQ7wtVX4x15ByZMZ+6PjZ0DTwk3lgc8gL+dt0CooRkaQ gU7Q== X-Gm-Message-State: AOJu0YzPSRMhTloFoS55w9+RWw+R9o0iUYyGDVaDac+kF6mFj0CYHhKR +eocVEWaOKp1WGWqe8vVBC1tX0lxK1eIZHTSb0sxA/aB1yd2vEdjOIlFBxIGXw== X-Google-Smtp-Source: AGHT+IFG36GQgY4uCjZVXfvzOA+CLsaqzqWLJJzVuABtpMBQX73k8Fp0qhp2LdItmxdajN/JAxzpeg== X-Received: by 2002:ac8:7e92:0:b0:447:f12f:38dd with SMTP id d75a77b69052e-447faacbf83mr192085311cf.59.1720914242797; Sat, 13 Jul 2024 16:44:02 -0700 (PDT) Received: from lvnvda5233.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7a160bbe6f7sm78124585a.37.2024.07.13.16.44.00 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 13 Jul 2024 16:44:01 -0700 (PDT) From: Michael Chan To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, pavan.chebbi@broadcom.com, andrew.gospodarek@broadcom.com, Vikas Gupta , Somnath Kotur Subject: [PATCH net-next 2/9] bnxt_en: add support for retrieving crash dump using ethtool Date: Sat, 13 Jul 2024 16:43:32 -0700 Message-ID: <20240713234339.70293-3-michael.chan@broadcom.com> X-Mailer: git-send-email 2.43.4 In-Reply-To: <20240713234339.70293-1-michael.chan@broadcom.com> References: <20240713234339.70293-1-michael.chan@broadcom.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000285c97061d299200" --000000000000285c97061d299200 Content-Transfer-Encoding: 8bit From: Vikas Gupta Add support for retrieving crash dump using ethtool -w on the supported interface. Reviewed-by: Somnath Kotur Reviewed-by: Pavan Chebbi Reviewed-by: Andy Gospodarek Signed-off-by: Vikas Gupta Signed-off-by: Michael Chan --- .../ethernet/broadcom/bnxt/bnxt_coredump.c | 83 +++++++++++++++++-- .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 13 ++- 2 files changed, 87 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_coredump.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_coredump.c index ebbad9ccab6a..9ed915e4c618 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_coredump.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_coredump.c @@ -372,14 +372,78 @@ static int __bnxt_get_coredump(struct bnxt *bp, void *buf, u32 *dump_len) return rc; } +static u32 bnxt_copy_crash_data(struct bnxt_ring_mem_info *rmem, void *buf, + u32 dump_len) +{ + u32 data_copied = 0; + u32 data_len; + int i; + + for (i = 0; i < rmem->nr_pages; i++) { + data_len = rmem->page_size; + if (data_copied + data_len > dump_len) + data_len = dump_len - data_copied; + memcpy(buf + data_copied, rmem->pg_arr[i], data_len); + data_copied += data_len; + if (data_copied >= dump_len) + break; + } + return data_copied; +} + +static int bnxt_copy_crash_dump(struct bnxt *bp, void *buf, u32 dump_len) +{ + struct bnxt_ring_mem_info *rmem; + u32 offset = 0; + + if (!bp->fw_crash_mem) + return -EEXIST; + + rmem = &bp->fw_crash_mem->ring_mem; + + if (rmem->depth > 1) { + int i; + + for (i = 0; i < rmem->nr_pages; i++) { + struct bnxt_ctx_pg_info *pg_tbl; + + pg_tbl = bp->fw_crash_mem->ctx_pg_tbl[i]; + offset += bnxt_copy_crash_data(&pg_tbl->ring_mem, + buf + offset, + dump_len - offset); + if (offset >= dump_len) + break; + } + } else { + bnxt_copy_crash_data(rmem, buf, dump_len); + } + + return 0; +} + +static bool bnxt_crash_dump_avail(struct bnxt *bp) +{ + u32 sig = 0; + + /* First 4 bytes(signature) of crash dump is always non-zero */ + bnxt_copy_crash_dump(bp, &sig, sizeof(u32)); + if (!sig) + return false; + + return true; +} + int bnxt_get_coredump(struct bnxt *bp, u16 dump_type, void *buf, u32 *dump_len) { if (dump_type == BNXT_DUMP_CRASH) { + if (bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_HOST_DDR) + return bnxt_copy_crash_dump(bp, buf, *dump_len); #ifdef CONFIG_TEE_BNXT_FW - return tee_bnxt_copy_coredump(buf, 0, *dump_len); -#else - return -EOPNOTSUPP; + else if (bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_SOC_DDR) + return tee_bnxt_copy_coredump(buf, 0, *dump_len); #endif + else + return -EOPNOTSUPP; } else { return __bnxt_get_coredump(bp, buf, dump_len); } @@ -442,10 +506,17 @@ u32 bnxt_get_coredump_length(struct bnxt *bp, u16 dump_type) { u32 len = 0; + if (dump_type == BNXT_DUMP_CRASH && + bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_HOST_DDR && + bp->fw_crash_mem) { + if (!bnxt_crash_dump_avail(bp)) + return 0; + + return bp->fw_crash_len; + } + if (bnxt_hwrm_get_dump_len(bp, dump_type, &len)) { - if (dump_type == BNXT_DUMP_CRASH) - len = BNXT_CRASH_DUMP_LEN; - else + if (dump_type != BNXT_DUMP_CRASH) __bnxt_get_coredump(bp, NULL, &len); } return len; diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index f121a5e9691f..1e720aa69568 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -4983,9 +4983,16 @@ static int bnxt_set_dump(struct net_device *dev, struct ethtool_dump *dump) 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; + if (dump->flag == BNXT_DUMP_CRASH) { + if (bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_SOC_DDR && + (!IS_ENABLED(CONFIG_TEE_BNXT_FW))) { + netdev_info(dev, + "Cannot collect crash dump as TEE_BNXT_FW config option is not enabled.\n"); + return -EOPNOTSUPP; + } else if (!(bp->fw_dbg_cap & DBG_QCAPS_RESP_FLAGS_CRASHDUMP_HOST_DDR)) { + netdev_info(dev, "Crash dump 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