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Thu, 28 May 2020 01:32:23 +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 01/10] scsi: ufs: add quirk to fix mishandling utrlclr/utmrlclr Date: Thu, 28 May 2020 06:46:49 +0530 Message-Id: <20200528011658.71590-2-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+NgFmpileLIzCtJLcpLzFFi42LZdlhTS3eVyPk4g7XnJS0ezNvGZvHy51U2 i0/rl7FazD9yjtXi/PkN7BY3txxlsdj0+BqrxeVdc9gsZpzfx2TRfX0Hm8Xy4/+YLP7v2cFu sXTrTUYHXo/Lfb1MHptWdbJ5bF5S79Fycj+Lx8ent1g8+rasYvT4vEnOo/1AN1MARxSXTUpq TmZZapG+XQJXxouja1gKdgtU7P9wnLmB8TVvFyMnh4SAicTHD2vZuxi5OIQEdjNKHGx/zArh fGKUeLziDhOE85lRYvGUB4wwLSvWLGGBSOxilPhxajkrSEJIoIVJYsVsXRCbTUBb4u70LUwg toiAsMSRb21gzcwCN5gkHqx0AbGFBUIljuztZAexWQRUJa6dfgtWzytgI3F+z0ZWiGXyEqs3 HGDuYuTg4BSwldg7wQFkr4RAL4fEn7XT2SFqXCR+rfrNBGELS7w6vgUqLiXx+d1eNpBeCYFs iZ5dxhDhGoml846xQNj2EgeuzGEBKWEW0JRYv0sf4ko+id7fT5ggOnklOtqEIKpVJZrfXYXq lJaY2N0NdaSHxKpDB9kgITKBUWLbr7/sExhlZyFMXcDIuIpRMrWgODc9tdi0wDAvtVyvODG3 uDQvXS85P3cTIziZaHnuYLz74IPeIUYmDsZDjBIczEoivE5nT8cJ8aYkVlalFuXHF5XmpBYf YpTmYFES51X6cSZOSCA9sSQ1OzW1ILUIJsvEwSnVwDStxFvUST1otld5oEWxBwdf0d1ck2gt wXa2pM4CP8PkdTYTH98QY+s3sJwZcuHye/kTJY4JokvtHE4r6+0IFnutnLhvmcilWfHNClsb sjZ+vc29/ZWs+Je383u9jJrrJneEFllonvzRUXlc+9WP28y6c5pfiV2/tl3D67TFjtVy/urf olcaS71RvSt1Ty+S0+w/e9zjc/bKnesVhVgVdbR2HD64eE7t7ZWad56rztRZN617ZarQC75t nXVJX6uzA65lil+8fCirp5fv3m+51z/Fn8lIzo/M3shVv0DG5J7d5Cti1lzVynunySVnN7C4 vF6+pNlof5Zum8XdGznRp0716hl8uR57VFTccFOTEktxRqKhFnNRcSIAqIW44ZUDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrELMWRmVeSWpSXmKPExsWy7bCSnO5KkfNxBidfmFk8mLeNzeLlz6ts Fp/WL2O1mH/kHKvF+fMb2C1ubjnKYrHp8TVWi8u75rBZzDi/j8mi+/oONovlx/8xWfzfs4Pd YunWm4wOvB6X+3qZPDat6mTz2Lyk3qPl5H4Wj49Pb7F49G1ZxejxeZOcR/uBbqYAjigum5TU nMyy1CJ9uwSujBdH17AU7Bao2P/hOHMD42veLkZODgkBE4kVa5awdDFycQgJ7GCUeNP7gA0i IS1xfeMEdghbWGLlv+fsEEVNTBKdDxcwgiTYBLQl7k7fwgRiiwAVHfnWBhZnFnjGJHHqYSmI LSwQLHG67z8LiM0ioCpx7fRbsHpeARuJ83s2skIskJdYveEAcxcjBwengK3E3gkOIGEhoJIJ q/YyTmDkW8DIsIpRMrWgODc9t9iwwCgvtVyvODG3uDQvXS85P3cTIziYtbR2MO5Z9UHvECMT B+MhRgkOZiURXqezp+OEeFMSK6tSi/Lji0pzUosPMUpzsCiJ836dtTBOSCA9sSQ1OzW1ILUI JsvEwSnVwJTxSLjlzsKc9XKPWGZpbv98ZcEv/73uR20Cvi+/f5nxzceo03c2s+Zv5Os04fj/ dseaKkn27g/HFwQEyv7w15zmsH9Fg7j4nmtXPr1inMd3miXL5N7b/TExDSznvpYav2xauUAt Ii1x8QaXx+czah5Yh9212fP4VPO27nlRT/PWbLeMWLhgv4RrwsNL3Ndz2SyUzSqD2ydOFE2b WZp6XPpGbSXzx/MPdV1rGE3/r001VZq2+GQt16Fcw2AV940TjsbfilQJ5st0/eAvlH93ffub EMbpN77+3vfptm12+nyHF9/li7o4zHdIGlu+sz9zOuI6f3BOjIhquvoCdx5Fw00lTc8+PPug Nfl7snTfmRtKLMUZiYZazEXFiQAvvvT61QIAAA== X-CMS-MailID: 20200528013226epcas5p1c73527c71424679443c10daf8bf561df X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P X-CMS-RootMailID: 20200528013226epcas5p1c73527c71424679443c10daf8bf561df References: <20200528011658.71590-1-alim.akhtar@samsung.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In the right behavior, setting the bit to '0' indicates clear and '1' indicates no change. If host controller handles this the other way, UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR can be used. Reviewed-by: Can Guo Reviewed-by: Avri Altman Signed-off-by: Seungwon Jeon Signed-off-by: Alim Akhtar --- drivers/scsi/ufs/ufshcd.c | 11 +++++++++-- drivers/scsi/ufs/ufshcd.h | 5 +++++ 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 698e8d20b4ba..3655b88fc862 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -645,7 +645,11 @@ static inline int ufshcd_get_tr_ocs(struct ufshcd_lrb *lrbp) */ static inline void ufshcd_utrl_clear(struct ufs_hba *hba, u32 pos) { - ufshcd_writel(hba, ~(1 << pos), REG_UTP_TRANSFER_REQ_LIST_CLEAR); + if (hba->quirks & UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR) + ufshcd_writel(hba, (1 << pos), REG_UTP_TRANSFER_REQ_LIST_CLEAR); + else + ufshcd_writel(hba, ~(1 << pos), + REG_UTP_TRANSFER_REQ_LIST_CLEAR); } /** @@ -655,7 +659,10 @@ static inline void ufshcd_utrl_clear(struct ufs_hba *hba, u32 pos) */ static inline void ufshcd_utmrl_clear(struct ufs_hba *hba, u32 pos) { - ufshcd_writel(hba, ~(1 << pos), REG_UTP_TASK_REQ_LIST_CLEAR); + if (hba->quirks & UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR) + ufshcd_writel(hba, (1 << pos), REG_UTP_TASK_REQ_LIST_CLEAR); + else + ufshcd_writel(hba, ~(1 << pos), REG_UTP_TASK_REQ_LIST_CLEAR); } /** diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 6ffc08ad85f6..071f0edf3f64 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -518,6 +518,11 @@ enum ufshcd_quirks { * ops (get_ufs_hci_version) to get the correct version. */ UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION = 1 << 5, + + /* + * Clear handling for transfer/task request list is just opposite. + */ + UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR = 1 << 6, }; enum ufshcd_caps { -- 2.17.1