From patchwork Mon May 20 14:10:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 10951339 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9447C76 for ; Mon, 20 May 2019 14:11:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 828B62864F for ; Mon, 20 May 2019 14:11:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 75668288B3; Mon, 20 May 2019 14:11:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id F39CC2875C for ; Mon, 20 May 2019 14:11:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=+NMd/fYcSc6un2UdxxDFOkEanBEeoPM9VC9nbbOVXro=; b=DMKZMg+ZPRQkgm cpw9MJOO/7I6p0xdmLyLu4y8vd4TsbLBD+ROhoLQ2V92Etk3rrZvg990hd6BGqEbbCMUxPoOd3wCc gEnOzpNTfQKav1fyLQV/YGFVceZ7gOnbfpX+JGpdQNJWf1GnqGmqHB91nEkZwex6Z0A0sRWyXw00X DFPWN2rDhUSo82cy50EsObDrzIfZpW7DKX1Mc++R/IzgcSXJEjgVzRubRM1jUX3NkVn+tGYt9xQfm ScbWQDCZBJ6h/9/EpmVqEwVFzMXojqFJ8rq3MXKyjFSrn86uYpEGlIo4FSF114E5B4OKtKoYeP1PK k8QhpRQg4Ey9KzzxXlAA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hSj0g-0007UC-M4; Mon, 20 May 2019 14:11:26 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hSj0S-0007Ad-SE; Mon, 20 May 2019 14:11:14 +0000 X-UUID: c53b5ba47ed849a49d5e02409cb5a420-20190520 X-UUID: c53b5ba47ed849a49d5e02409cb5a420-20190520 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1728799133; Mon, 20 May 2019 06:10:49 -0800 Received: from mtkmbs03n1.mediatek.inc (172.21.101.181) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 20 May 2019 07:10:48 -0700 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs03n1.mediatek.inc (172.21.101.181) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 20 May 2019 22:10:46 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 20 May 2019 22:10:46 +0800 From: Stanley Chu To: , , , , Subject: [PATCH v4 0/3] scsi: ufs: Add error handling of Auto-Hibernate Date: Mon, 20 May 2019 22:10:42 +0800 Message-ID: <1558361445-30994-1-git-send-email-stanley.chu@mediatek.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190520_071112_910881_C75372AF X-CRM114-Status: UNSURE ( 5.63 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marc.w.gonzalez@free.fr, andy.teng@mediatek.com, chun-hung.wu@mediatek.com, kuohong.wang@mediatek.com, evgreen@chromium.org, linux-mediatek@lists.infradead.org, peter.wang@mediatek.com, matthias.bgg@gmail.com, Stanley Chu , linux-arm-kernel@lists.infradead.org, beanhuo@micron.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Currently auto-hibernate is activated if host supports auto-hibern8 capability. However error-handling is not implemented, which makes the feature somewhat risky. If either "Hibernate Enter" or "Hibernate Exit" fail during auto-hibernate flow, the corresponding interrupt "UIC_HIBERNATE_ENTER" or "UIC_HIBERNATE_EXIT" shall be raised according to UFS specification. This patch adds auto-hibernate error-handling: - Monitor "Hibernate Enter" and "Hibernate Exit" interrupts after auto-hibernate feature is activated. - If fail happens, trigger error-handling just like "manual-hibernate" fail and apply the same recovery flow: schedule UFS error handler in ufshcd_check_errors(), and then do host reset and restore in UFS error handler. v4: - Replace original patch "[3/3] scsi: ufs: Use re-factored Auto-Hibernate function" by a new preparation patch "[2/3] scsi: ufs: Introduce ufshcd_is_auto_hibern8_supported()" for re-factoring ufshcd_is_auto_hibern8_supported (Avri Altman) - Refine UIC mask definitions (Avri Altman) v3: - Fix typo in patch "scsi: ufs: Do not overwrite Auto-Hibernate timer" (Avri Altman) - Rebase to Linux 5.2-rc1 v2: - Fix sentences in commit message (Marc Gonzalez) - Make "Auto-Hibernate" error detection more precise (Bean Huo) Stanley Chu (3): scsi: ufs: Do not overwrite Auto-Hibernate timer scsi: ufs: Introduce ufshcd_is_auto_hibern8_supported() scsi: ufs: Add error-handling of Auto-Hibernate drivers/scsi/ufs/ufshcd.c | 33 ++++++++++++++++++++++++++++++++- drivers/scsi/ufs/ufshcd.h | 5 +++++ drivers/scsi/ufs/ufshci.h | 6 ++++-- 3 files changed, 41 insertions(+), 3 deletions(-)