From: Alim Akhtar <alim.akhtar@samsung.com> 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 <alim.akhtar@samsung.com> Subject: [PATCH v9 05/10] scsi: ufs: add quirk to fix abnormal ocs fatal error Date: Thu, 14 May 2020 06:09:09 +0530 [thread overview] Message-ID: <20200514003914.26052-6-alim.akhtar@samsung.com> (raw) In-Reply-To: <20200514003914.26052-1-alim.akhtar@samsung.com> From: Kiwoong Kim <kwmad.kim@samsung.com> 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 <kwmad.kim@samsung.com> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Avri Altman <avri.altman@wdc.com> --- 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 { -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Alim Akhtar <alim.akhtar@samsung.com> To: robh@kernel.org Cc: devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, martin.petersen@oracle.com, linux-kernel@vger.kernel.org, krzk@kernel.org, kwmad.kim@samsung.com, avri.altman@wdc.com, cang@codeaurora.org, Alim Akhtar <alim.akhtar@samsung.com>, stanley.chu@mediatek.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v9 05/10] scsi: ufs: add quirk to fix abnormal ocs fatal error Date: Thu, 14 May 2020 06:09:09 +0530 [thread overview] Message-ID: <20200514003914.26052-6-alim.akhtar@samsung.com> (raw) In-Reply-To: <20200514003914.26052-1-alim.akhtar@samsung.com> From: Kiwoong Kim <kwmad.kim@samsung.com> 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 <kwmad.kim@samsung.com> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Avri Altman <avri.altman@wdc.com> --- 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 { -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-05-14 0:53 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20200514005251epcas5p39ff05e1b6f4f8735f1516fbb670d6810@epcas5p3.samsung.com> 2020-05-14 0:39 ` [PATCH v9 00/10] exynos-ufs: Add support for UFS HCI Alim Akhtar 2020-05-14 0:39 ` Alim Akhtar [not found] ` <CGME20200514005254epcas5p27e2ef61a6d7f595ff2eaf4ec65940cf6@epcas5p2.samsung.com> 2020-05-14 0:39 ` [PATCH v9 01/10] scsi: ufs: add quirk to fix mishandling utrlclr/utmrlclr Alim Akhtar 2020-05-14 0:39 ` Alim Akhtar [not found] ` <CGME20200514005256epcas5p3ccb5dcc7c96a5cdb9ee78baa8ec1e0d3@epcas5p3.samsung.com> 2020-05-14 0:39 ` [PATCH v9 02/10] scsi: ufs: add quirk to disallow reset of interrupt aggregation Alim Akhtar 2020-05-14 0:39 ` Alim Akhtar [not found] ` <CGME20200514005258epcas5p14733cec8b9ca92e518a8d5a0c27f3f0b@epcas5p1.samsung.com> 2020-05-14 0:39 ` [PATCH v9 03/10] scsi: ufs: add quirk to enable host controller without hce Alim Akhtar 2020-05-14 0:39 ` Alim Akhtar [not found] ` <CGME20200514005300epcas5p4ce7ba7fe62567e7ba0066c96473853b2@epcas5p4.samsung.com> 2020-05-14 0:39 ` [PATCH v9 04/10] scsi: ufs: introduce UFSHCD_QUIRK_PRDT_BYTE_GRAN quirk Alim Akhtar 2020-05-14 0:39 ` Alim Akhtar [not found] ` <CGME20200514005302epcas5p1d2e99ba001cacc4d9e0d8dcf7de3155b@epcas5p1.samsung.com> 2020-05-14 0:39 ` Alim Akhtar [this message] 2020-05-14 0:39 ` [PATCH v9 05/10] scsi: ufs: add quirk to fix abnormal ocs fatal error Alim Akhtar [not found] ` <CGME20200514005304epcas5p37a311f813416383b6de8af6e809b350d@epcas5p3.samsung.com> 2020-05-14 0:39 ` [PATCH v9 06/10] dt-bindings: phy: Document Samsung UFS PHY bindings Alim Akhtar 2020-05-14 0:39 ` Alim Akhtar [not found] ` <CGME20200514005307epcas5p28b00e2fb5e9526c447927b52127480f4@epcas5p2.samsung.com> 2020-05-14 0:39 ` [PATCH v9 07/10] phy: samsung-ufs: add UFS PHY driver for samsung SoC Alim Akhtar 2020-05-14 0:39 ` Alim Akhtar [not found] ` <CGME20200514005309epcas5p3ccd2b44c1bf20634eea3e232d1c2b62e@epcas5p3.samsung.com> 2020-05-14 0:39 ` [PATCH v9 08/10] dt-bindings: ufs: Add DT binding documentation for ufs Alim Akhtar 2020-05-14 0:39 ` Alim Akhtar 2020-05-26 18:08 ` Rob Herring 2020-05-26 18:08 ` Rob Herring 2020-05-27 16:23 ` Alim Akhtar 2020-05-27 16:23 ` Alim Akhtar [not found] ` <CGME20200514005311epcas5p21eb58ec4a937e9c13589f81c33d77fe3@epcas5p2.samsung.com> 2020-05-14 0:39 ` [PATCH v9 09/10] scsi: ufs-exynos: add UFS host support for Exynos SoCs Alim Akhtar 2020-05-14 0:39 ` Alim Akhtar [not found] ` <CGME20200514005313epcas5p3eac58d00d9f617b860a3ac607c8413ec@epcas5p3.samsung.com> 2020-05-14 0:39 ` [PATCH v9 10/10] arm64: dts: Add node for ufs exynos7 Alim Akhtar 2020-05-14 0:39 ` Alim Akhtar 2020-05-19 7:16 ` Krzysztof Kozlowski 2020-05-19 7:16 ` Krzysztof Kozlowski 2020-05-21 16:49 ` Alim Akhtar 2020-05-21 16:49 ` Alim Akhtar
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