From patchwork Wed Sep 30 00:15:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Nguyen X-Patchwork-Id: 289324 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=-12.8 required=3.0 tests=BAYES_00, 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 B60B2C4727D for ; Wed, 30 Sep 2020 00:16:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 666AE2076B for ; Wed, 30 Sep 2020 00:16:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729316AbgI3AQJ (ORCPT ); Tue, 29 Sep 2020 20:16:09 -0400 Received: from mga01.intel.com ([192.55.52.88]:41608 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728701AbgI3AQJ (ORCPT ); Tue, 29 Sep 2020 20:16:09 -0400 IronPort-SDR: uvPLCbSPYjfWufBqCWFIiJOehpOfBzBUZI8uLekvalZOgTyBTKheJes4FMwkFfnVbgS9ircrAA 0gYozSyC8tlA== X-IronPort-AV: E=McAfee;i="6000,8403,9759"; a="180482221" X-IronPort-AV: E=Sophos;i="5.77,320,1596524400"; d="scan'208";a="180482221" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Sep 2020 17:16:07 -0700 IronPort-SDR: ACqL0YofA8k1Wjiqcl2yKgpnCfCKvCq5DlT/a3YXdPlMqmvIRIcl0zMhWnlBHj9CTrcPtsE2jy 2dEWCRCqcajw== X-IronPort-AV: E=Sophos;i="5.77,320,1596524400"; d="scan'208";a="514086698" Received: from jtkirshe-desk1.jf.intel.com ([134.134.177.86]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Sep 2020 17:16:07 -0700 From: Tony Nguyen To: davem@davemloft.net, kuba@kernel.org Cc: Jacob Keller , netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, anthony.l.nguyen@intel.com, Brijesh Behera Subject: [PATCH net 1/2] ice: increase maximum wait time for flash write commands Date: Tue, 29 Sep 2020 17:15:47 -0700 Message-Id: <20200930001548.1927323-1-anthony.l.nguyen@intel.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Jacob Keller The ice driver needs to wait for a firmware response to each command to write a block of data to the scratch area used to update the device firmware. The driver currently waits for up to 1 second for this to be returned. It turns out that firmware might take longer than 1 second to return a completion in some cases. If this happens, the flash update will fail to complete. Fix this by increasing the maximum time that the driver will wait for both writing a block of data, and for activating the new NVM bank. The timeout for an erase command is already several minutes, as the firmware had to erase the entire bank which was already expected to take a minute or more in the worst case. In the case where firmware really won't respond, we will now take longer to fail. However, this ensures that if the firmware is simply slow to respond, the flash update can still complete. This new maximum timeout should not adversely increase the update time, as the implementation for wait_event_interruptible_timeout, and should wake very soon after we get a completion event. It is better for a flash update be slow but still succeed than to fail because we gave up too quickly. Fixes: d69ea414c9b4 ("ice: implement device flash update via devlink") Signed-off-by: Jacob Keller Tested-by: Brijesh Behera Signed-off-by: Tony Nguyen --- drivers/net/ethernet/intel/ice/ice_fw_update.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_fw_update.c b/drivers/net/ethernet/intel/ice/ice_fw_update.c index deaefe00c9c0..8968fdd4816b 100644 --- a/drivers/net/ethernet/intel/ice/ice_fw_update.c +++ b/drivers/net/ethernet/intel/ice/ice_fw_update.c @@ -289,7 +289,13 @@ ice_write_one_nvm_block(struct ice_pf *pf, u16 module, u32 offset, return -EIO; } - err = ice_aq_wait_for_event(pf, ice_aqc_opc_nvm_write, HZ, &event); + /* In most cases, firmware reports a write completion within a few + * milliseconds. However, it has been observed that a completion might + * take more than a second to complete in some cases. The timeout here + * is conservative and is intended to prevent failure to update when + * firmware is slow to respond. + */ + err = ice_aq_wait_for_event(pf, ice_aqc_opc_nvm_write, 15 * HZ, &event); if (err) { dev_err(dev, "Timed out waiting for firmware write completion for module 0x%02x, err %d\n", module, err); @@ -513,7 +519,7 @@ static int ice_switch_flash_banks(struct ice_pf *pf, u8 activate_flags, return -EIO; } - err = ice_aq_wait_for_event(pf, ice_aqc_opc_nvm_write_activate, HZ, + err = ice_aq_wait_for_event(pf, ice_aqc_opc_nvm_write_activate, 30 * HZ, &event); if (err) { dev_err(dev, "Timed out waiting for firmware to switch active flash banks, err %d\n",