From patchwork Mon Aug 24 09:39:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Can Guo X-Patchwork-Id: 11732661 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8B4BF13B1 for ; Mon, 24 Aug 2020 09:39:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7D13720FC3 for ; Mon, 24 Aug 2020 09:39:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729600AbgHXJjQ (ORCPT ); Mon, 24 Aug 2020 05:39:16 -0400 Received: from labrats.qualcomm.com ([199.106.110.90]:10529 "EHLO labrats.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729559AbgHXJjP (ORCPT ); Mon, 24 Aug 2020 05:39:15 -0400 IronPort-SDR: KotqAyvt0P+u/Kj+Avo2CFawp6g/849JyacJMKBfSkZZMeqMnqzrko2aVnxN/rjEeAeb8UZS1S cBjakbwiuUoQlTQSsrgoP6WY8+s7GUugIu4bDgFx5D0q4EX83OpjszBRFzklpKWi2ccAarwcri 9/qQ7wpuMFncTVo9bHR9ats2gzm+1ZrLuTY0OR1R4nnkr1bV3KUqP1ZnIdkJfQKgHhqUtVDJu2 w/JaLaneDwW3UyaxSM2c5TrSwQakHoGORG10f5tAYBDdIO3vHB/jWmNGPMddXOFpnRm/OOfNId fBU= X-IronPort-AV: E=Sophos;i="5.76,348,1592895600"; d="scan'208";a="47271617" Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by labrats.qualcomm.com with ESMTP; 24 Aug 2020 02:39:14 -0700 Received: from wsp769891wss.qualcomm.com (HELO stor-presley.qualcomm.com) ([192.168.140.85]) by ironmsg02-sd.qualcomm.com with ESMTP; 24 Aug 2020 02:39:13 -0700 Received: by stor-presley.qualcomm.com (Postfix, from userid 359480) id 898932121E; Mon, 24 Aug 2020 02:39:13 -0700 (PDT) From: Can Guo To: asutoshd@codeaurora.org, nguyenb@codeaurora.org, hongwus@codeaurora.org, rnayak@codeaurora.org, linux-scsi@vger.kernel.org, kernel-team@android.com, saravanak@google.com, salyzyn@google.com, cang@codeaurora.org Subject: [PATCH v1 0/2] Add UFS LINERESET handling Date: Mon, 24 Aug 2020 02:39:09 -0700 Message-Id: <1598261952-29209-1-git-send-email-cang@codeaurora.org> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org PA Layer issues a LINERESET to the PHY at the recovery step in the Power Mode change operation. If it happens during auto or mannual hibern8 enter, even if hibern8 enter succeeds, UFS power mode shall be set to PWM-G1 mode and kept in that mode after exit from hibern8, leading to bad performance. Handle the LINERESET in the eh_work by restoring power mode to HS mode after all pending reqs and tasks are cleared from doorbell. Can Guo (2): scsi: ufs: Abort tasks before clear them from doorbell scsi: ufs: Handle LINERESET indication in err handler drivers/scsi/ufs/ufshcd.c | 254 ++++++++++++++++++++++++++++++++-------------- drivers/scsi/ufs/ufshcd.h | 2 + drivers/scsi/ufs/unipro.h | 3 + 3 files changed, 183 insertions(+), 76 deletions(-)