From patchwork Sun Apr 26 17:30:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alim Akhtar X-Patchwork-Id: 11510801 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 63FBF1667 for ; Sun, 26 Apr 2020 17:42:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4CA3F21556 for ; Sun, 26 Apr 2020 17:42:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="VOmc3LHo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726371AbgDZRmL (ORCPT ); Sun, 26 Apr 2020 13:42:11 -0400 Received: from mailout2.samsung.com ([203.254.224.25]:22844 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726369AbgDZRmL (ORCPT ); Sun, 26 Apr 2020 13:42:11 -0400 Received: from epcas5p4.samsung.com (unknown [182.195.41.42]) by mailout2.samsung.com (KnoxPortal) with ESMTP id 20200426174208epoutp02f6b0bbc4998ec759a806ff46d566d5d1~Jb32LYGA51534515345epoutp02Y for ; Sun, 26 Apr 2020 17:42:08 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.samsung.com 20200426174208epoutp02f6b0bbc4998ec759a806ff46d566d5d1~Jb32LYGA51534515345epoutp02Y DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1587922928; bh=aZlGHc5xTiWwAyuHWOUJ6KyldBblFcw6DUpelUfBEa8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VOmc3LHoAnPsiadpW7uP+lCjMtCYSBCCBDPIIkpvsm9fEIDaxUtj6QNC46v370J3E rZAXdEADaNTjmFRL0OsB9uCG/gjBWQeiRu64QFY5a1K+YXn8qbHQi6U0Hsv24rfStB Rw0fYq+QlSdhA52J/6emYgEJyra3Jet+kNePj2dY= Received: from epsmges5p1new.samsung.com (unknown [182.195.42.73]) by epcas5p1.samsung.com (KnoxPortal) with ESMTP id 20200426174207epcas5p10a309a64b0f5750ce88bb96dc0bdf155~Jb31MDWiv1407714077epcas5p1d; Sun, 26 Apr 2020 17:42:07 +0000 (GMT) Received: from epcas5p1.samsung.com ( [182.195.41.39]) by epsmges5p1new.samsung.com (Symantec Messaging Gateway) with SMTP id FF.42.04782.FE7C5AE5; Mon, 27 Apr 2020 02:42:07 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p3.samsung.com (KnoxPortal) with ESMTPA id 20200426174206epcas5p3a948de27f9eaa9256e4c3de5294ce234~Jb30pQwcz0554805548epcas5p3H; Sun, 26 Apr 2020 17:42:06 +0000 (GMT) Received: from epsmgms1p2.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20200426174206epsmtrp23798bc6229183f6ec1745eedcd4a91c9~Jb30oe4qx1150211502epsmtrp2V; Sun, 26 Apr 2020 17:42:06 +0000 (GMT) X-AuditID: b6c32a49-89bff700000012ae-4e-5ea5c7ef35ad Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgms1p2.samsung.com (Symantec Messaging Gateway) with SMTP id E3.DC.25866.EE7C5AE5; Mon, 27 Apr 2020 02:42:06 +0900 (KST) Received: from Jaguar.sa.corp.samsungelectronics.net (unknown [107.108.73.139]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20200426174204epsmtip1d26c5ef798b311816760ad027e3ccd9c~Jb3yxOH9D2626126261epsmtip1h; Sun, 26 Apr 2020 17:42:04 +0000 (GMT) From: Alim Akhtar To: robh@kernel.org Cc: devicetree@vger.kernel.org, linux-scsi@vger.kernel.org, krzk@kernel.org, avri.altman@wdc.com, martin.petersen@oracle.com, kwmad.kim@samsung.com, stanley.chu@mediatek.com, cang@codeaurora.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Alim Akhtar Subject: [PATCH v7 02/10] scsi: ufs: add quirk to disallow reset of interrupt aggregation Date: Sun, 26 Apr 2020 23:00:16 +0530 Message-Id: <20200426173024.63069-3-alim.akhtar@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200426173024.63069-1-alim.akhtar@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA0WSa0hTYRjHec/OOR6Hi9Mm9KSZtVBTyUslnQ9eCiSOIGHfwrw09KCmm7JN zQqUFG/LWxc0G1OkmZqXNZfJtDQzZwkamFcQrBmSlaKD0CyteRZ9+z3v8/+//+d5eSmBuIpw o9IUak6pkGVISSHe89rX58SaRZ8Q1Fl7iFnU9ZDMl60pktnoaiaYhuFxgpmYMDgxc6Y3OGO0 ThPMpFlLMnUTLzFGM9NLMo8tOxiz29/rxOifzaGzInaysgJjjW1lJNv9KJ8tejuAs+uf53G2 0tSGWJvxMFsyqMFiqFhhaDKXkZbDKQPDrwhTe/pWyax5l2vVlnlBAZoUliOKAvo0mMbwciSk xHQfAnNzFcEXGwiWxsyOjg3B6NLvv4XznmO26CPJN8wIlkcGEF8UYfB08C5mV5G0PyzUmvbY lZbA8I9iZGcBPYvBYmuknSX0ZdiemibsjNNeYF3swO0ziehQsBo8+DBPeGIYFNjZmQ6Dd3Vm zJ4FdBkFMw+NJC+KBN2rUcd0ElixmJx4dgPb6guS3zMdbptP8cc3Qa8bccgjYPCDdi9WQPtC lzmQn3IfVGwvYbxTBKXFYl7tBYWrUw6nO9RoNATPLKx+1TiepBpBvUXjVI086v/f2ohQGzrI ZankKZwqJCtYweUGqGRyVbYiJSApU25Ee9/EL6oX1Y9HDyGaQlIXEfVcnyAmZDmqPPkQAkog dRXFqZsSxKJkWd51TpmZqMzO4FRDyJ3CpQdEd4ipODGdIlNz6RyXxSn/dTHK2a0ADbC2tMIH 2RC9aV1hdJ7T5/t/9kd4d8bfC23dbDkeHut9Q31rTTtZoDiH7dRs+SeuoyC3GTZkf5ouu2PZ p6NQnyQtMZRcCGtv1mqPtBzFLQvqi1GNzqnf4oeuxiS1H/sE72Pk+d0XS8+s9+klu7l0k+t3 SYPi/klzAYRd+hUqxVWpsmA/gVIl+wMz2aM0IgMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrILMWRmVeSWpSXmKPExsWy7bCSnO6740vjDHp6zSwezNvGZvHy51U2 i0/rl7FazD9yjtXi/PkN7BY3txxlsdj0+BqrxeVdc9gsZpzfx2TRfX0Hm8Xy4/+YLP7v2cFu sXTrTUYHXo/Lfb1MHptWdbJ5bF5S79Fycj+Lx8ent1g8+rasYvT4vEnOo/1AN1MARxSXTUpq TmZZapG+XQJXxrbd79gKbvFUTDh+i7mB8TJXFyMnh4SAicSNlodsXYxcHEICOxgldt59xgyR kJa4vnECO4QtLLHy33N2iKImJonTK/qZQBJsAtoSd6dvAbNFgIqOfGtjBLGZBZ4xSZx6WApi CwtESkxefZAVxGYRUJV4/GAtSxcjBwevgI3E4w2yEPPlJVZvOAC2l1PAVuLUjF1MICVCQCXT 1/tPYORbwMiwilEytaA4Nz232LDAKC+1XK84Mbe4NC9dLzk/dxMjOJS1tHYw7ln1Qe8QIxMH 4yFGCQ5mJRHemJJFcUK8KYmVValF+fFFpTmpxYcYpTlYlMR5v85aGCckkJ5YkpqdmlqQWgST ZeLglGpgEt13v9RrZVn3dm/LWiPR5Ws5K+ufzNXarml+oWbl5cm7f0zhWC4hsexXz5nt3f35 Ih+uWy5uv1vNGrrVuu14xU6BZhYZ+93Xpj3ZGvxvCteUOs7PU+TPVh18NpXF1FU4gq1T/E/q pFl59c+XaTj/tL2pb3+UR8zrVtanGS37bnn+7Pi3x6hB4dHvgAXbpj+aVR6+3CZuh4V75LZt BQK12it/pT+S5fm97epWoXhBlQcqzKfOhBVVRGYEaomcO9Lpcihz58EU1bTqTw/YxGS+1lob zeALFzP/ek3trlqy7GqZZ++27Ap2jD2+ua/TI1HV0M78+NSi3e03N9tOepl05dezA7sWBPV0 PZZt8eKepcRSnJFoqMVcVJwIAPgHnWrUAgAA X-CMS-MailID: 20200426174206epcas5p3a948de27f9eaa9256e4c3de5294ce234 X-Msg-Generator: CA CMS-TYPE: 105P X-CMS-RootMailID: 20200426174206epcas5p3a948de27f9eaa9256e4c3de5294ce234 References: <20200426173024.63069-1-alim.akhtar@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Some host controllers support interrupt aggregation but don't allow resetting counter and timer in software. Reviewed-by: Avri Altman Signed-off-by: Seungwon Jeon Signed-off-by: Alim Akhtar --- drivers/scsi/ufs/ufshcd.c | 3 ++- drivers/scsi/ufs/ufshcd.h | 6 ++++++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 3655b88fc862..0e9704da58bd 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -4884,7 +4884,8 @@ static irqreturn_t ufshcd_transfer_req_compl(struct ufs_hba *hba) * false interrupt if device completes another request after resetting * aggregation and before reading the DB. */ - if (ufshcd_is_intr_aggr_allowed(hba)) + if (ufshcd_is_intr_aggr_allowed(hba) && + !(hba->quirks & UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR)) ufshcd_reset_intr_aggr(hba); tr_doorbell = ufshcd_readl(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 071f0edf3f64..53096642f9a8 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -523,6 +523,12 @@ enum ufshcd_quirks { * Clear handling for transfer/task request list is just opposite. */ UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR = 1 << 6, + + /* + * This quirk needs to be enabled if host controller doesn't allow + * that the interrupt aggregation timer and counter are reset by s/w. + */ + UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR = 1 << 7, }; enum ufshcd_caps {