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Thu, 28 May 2020 01:32:32 +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 v10 05/10] scsi: ufs: add quirk to fix abnormal ocs fatal error Date: Thu, 28 May 2020 06:46:53 +0530 Message-Id: <20200528011658.71590-6-alim.akhtar@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200528011658.71590-1-alim.akhtar@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpkleLIzCtJLcpLzFFi42LZdlhTS3eTyPk4g7svtCwezNvGZvHy51U2 i0/rl7FazD9yjtXi/PkN7BY3txxlsdj0+BqrxeVdc9gsZpzfx2TRfX0Hm8Xy4/+YLP7v2cFu sXTrTUYHXo/Lfb1MHptWdbJ5bF5S79Fycj+Lx8ent1g8+rasYvT4vEnOo/1AN1MARxSXTUpq TmZZapG+XQJXxqYjP9gK2vkq1l++yNzAeIa7i5GTQ0LARKLxwQ2WLkYuDiGB3YwSc492MYMk hAQ+MUo0rZWDSHxmlPjRMJ29i5EDrGPePx6I+C5Gie7/l5ghnBYmiU//D7OBdLMJaEvcnb6F CcQWERCWOPKtjRHEZha4wSTxYKULiC0sECixdP0dFhCbRUBV4uHmBrDNvAI2EqvWdrFDnCcv sXrDAWaQxZwCthJ7JziA7JIQ6OSQ+NbWwwJR4yKx6vtRVghbWOLV8S1QvVISL/vboI7OlujZ ZQwRrpFYOu8YVKu9xIErc1hASpgFNCXW79KHuJJPovf3EyaITl6JjjYhiGpVieZ3V6E6pSUm dndDLfWQeLr3LyskFCYAg+riFvYJjLKzEKYuYGRcxSiZWlCcm55abFpglJdarlecmFtcmpeu l5yfu4kRnEq0vHYwPnzwQe8QIxMH4yFGCQ5mJRFep7On44R4UxIrq1KL8uOLSnNSiw8xSnOw KInzKv04EyckkJ5YkpqdmlqQWgSTZeLglGpgYorKXXJGHaiusKT3u5jd/OPqXheOFR8+0x24 P37b3L/MTW/bSz/u5Tj85OP9fQuSU6SFTaN1nvn7PcvRM8mtMrz7sCfKOuF0l+/nqUmbNKc8 EUqvyp2/6QG/9XcDRvFqx6nhfAa8fdqXS+bm9HZZz5JaddumrkyjY85njcjtej9Z/PgFP2w6 FnzaxOMQf5y0893op8fuHxbY9c8/aIuvmbDLz5CN2SZnW24LWzscEecRPnLwdtsG/nNTuGyW tF/SyZgg9T30arqWCL/wJ7Gpse7vKkIu3L9yxWbLjfV9p1l71rhqazm/VZ0msvyUZefnVYbz VGevqnZpeXCxpEb1yE+Jt/az1Q+e8L0d8U+JpTgj0VCLuag4EQD6ahqblAMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrALMWRmVeSWpSXmKPExsWy7bCSnO4mkfNxBttv8Fk8mLeNzeLlz6ts Fp/WL2O1mH/kHKvF+fMb2C1ubjnKYrHp8TVWi8u75rBZzDi/j8mi+/oONovlx/8xWfzfs4Pd YunWm4wOvB6X+3qZPDat6mTz2Lyk3qPl5H4Wj49Pb7F49G1ZxejxeZOcR/uBbqYAjigum5TU nMyy1CJ9uwSujE1HfrAVtPNVrL98kbmB8Qx3FyMHh4SAicS8fzxdjFwcQgI7GCUmXvzE2sXI CRSXlri+cQI7hC0ssfLfczBbSKCJSWLhsjoQm01AW+Lu9C1MILYIUM2Rb22MIDazwDMmiVMP S0FsYQF/iY7pLWBxFgFViYebG5hBbF4BG4lVa7ug5stLrN5wgBnkHk4BW4m9ExwgVtlITFi1 l3ECI98CRoZVjJKpBcW56bnFhgVGeanlesWJucWleel6yfm5mxjBgayltYNxz6oPeocYmTgY DzFKcDArifA6nT0dJ8SbklhZlVqUH19UmpNafIhRmoNFSZz366yFcUIC6YklqdmpqQWpRTBZ Jg5OqQYmswymRWf2/Hur7rzy4hyG/mWXu8sefjPe3/NKmPdIWd8Vp68P3ez/vApmm6dZf1yw WvtO5menk5KNn9qZXj4ok4prXHmtTYQh8H3h3Iwf72Ii2tOrFzxiX/M9SEXFqt8u9f2dE1JH peSfM/lmfCo92Jax5kFodvf90FRp0en3meSXL5p9yc95rVbKz9p/LfHlDIdPN6tvbLlmvrWB +Q57et6ESmlpmdV/O740heSZd8rNOX4oIv3itANnInq7Hr/I4ZxdaWD/gO9Xsf1SPZ6Xrz6L MffPkVTjbWD6liFxP9Vsgg//jdVBKq/9TI8bC1p97tmVeOltREfSIfmD51tWesoqzk8901jz 6PDhR2xKLMUZiYZazEXFiQDNqBCL0wIAAA== X-CMS-MailID: 20200528013234epcas5p2fe5412e2775ff9b28a1b29e8e30ab69c X-Msg-Generator: CA CMS-TYPE: 105P X-CMS-RootMailID: 20200528013234epcas5p2fe5412e2775ff9b28a1b29e8e30ab69c References: <20200528011658.71590-1-alim.akhtar@samsung.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Kiwoong Kim Some controller like Exynos determines if FATAL ERROR (0x7) in OCS field in UTRD occurs for values other than GOOD (0x0) in STATUS field in response upiu as well as errors that a host controller can't cover. This patch is to prevent from reporting command results in those cases. Signed-off-by: Kiwoong Kim Signed-off-by: Alim Akhtar Reviewed-by: Avri Altman --- drivers/scsi/ufs/ufshcd.c | 6 ++++++ drivers/scsi/ufs/ufshcd.h | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index ba093d0d0942..33ebffa8257d 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -4794,6 +4794,12 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) /* overall command status of utrd */ ocs = ufshcd_get_tr_ocs(lrbp); + if (hba->quirks & UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR) { + if (be32_to_cpu(lrbp->ucd_rsp_ptr->header.dword_1) & + MASK_RSP_UPIU_RESULT) + ocs = OCS_SUCCESS; + } + switch (ocs) { case OCS_SUCCESS: result = ufshcd_get_req_rsp(lrbp->ucd_rsp_ptr); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index a9b9ace9fc72..e1d09c2c4302 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -541,6 +541,12 @@ enum ufshcd_quirks { * resolution of the values of PRDTO and PRDTL in UTRD as byte. */ UFSHCD_QUIRK_PRDT_BYTE_GRAN = 1 << 9, + + /* + * This quirk needs to be enabled if the host controller reports + * OCS FATAL ERROR with device error through sense data + */ + UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR = 1 << 10, }; enum ufshcd_caps {