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Sat, 13 Jun 2020 03:04:36 +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, kishon@ti.com, Alim Akhtar Subject: [RESEND PATCH v10 01/10] scsi: ufs: add quirk to fix mishandling utrlclr/utmrlclr Date: Sat, 13 Jun 2020 08:16:57 +0530 Message-Id: <20200613024706.27975-2-alim.akhtar@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200613024706.27975-1-alim.akhtar@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFuplleLIzCtJLcpLzFFi42LZdlhTU9fd6UmcwbwnlhYP5m1js3j58yqb xaf1y1gt5h85x2px4WkPm8X58xvYLW5uOcpisenxNVaLy7vmsFnMOL+PyaL7+g42i+XH/zFZ /N+zg91i6dabjA58Hpf7epk8Nq3qZPPYvKTeo+XkfhaPj09vsXj0bVnF6HH8xnYmj8+b5Dza D3QzBXBGcdmkpOZklqUW6dslcGW8OLqGpWC3QMX+D8eZGxhf83YxcnJICJhIPOlYxdrFyMUh JLCbUaJ3+XMWCOcTo8TdU2fYIZxvjBLHP81igml5um0JM0RiL6PExetn2SCcFiaJ/TNXsYBU sQloS9ydvgWsQ0RAWOLItzZGEJtZ4CWTxK5HBV2MHBzCAjESnWf4QcIsAqoSs++/YQexeQVs JPZf/wu1TF5i9YYDzCA2p4CtxMH/C5hAdkkIzOSQWDltDitEkYvEh4lT2SFsYYlXx7dA2VIS n9/tZQPZJSGQLdGzyxgiXCOxdN4xFgjbXuLAlTksICXMApoS63fpQ1zJJ9H7+wkTRCevREeb EES1qkTzu6tQndISE7u7oQ7wkDh6fhIjJBQmMEpceP+MZQKj7CyEqQsYGVcxSqYWFOempxab FhjlpZbrFSfmFpfmpesl5+duYgSnGC2vHYwPH3zQO8TIxMF4iFGCg1lJhFdQ/GGcEG9KYmVV alF+fFFpTmrxIUZpDhYlcV6lH2fihATSE0tSs1NTC1KLYLJMHJxSDUy8Rw86dy245LDs3kvp 5U2zltVH5yjmO/fUqwe4x5SlPQte29nrIS120fC34GNGDinHxKtnHnUu/Jsitt1oDZNB4vuu k8sNutXyNY1q7RI1ThztWvTlGU9ai8rtGQduhCZ3nuXLCc3h9mVmiJhzlPfCPquO2XfN/s6o WymmyTUjxJmT4ez9D74TjtV5HljmcGYC/+RtShyiHwVfM6QwMdV6alXbNys7ZO7LM6nXf7h/ 5gsBy6NXozckvz60UW+ry0XZz28EbJwfG92Zw9vC4dTMflGroXjZPVXRrstbb2bk/Zur4/PE jfu0YcCvOb9m3YloetHE6me0+nAqd9gxqa+BWZPnN52dwCBd9Gq9kBJLcUaioRZzUXEiAMtM 0oagAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrHLMWRmVeSWpSXmKPExsWy7bCSvK6b05M4gw89mhYP5m1js3j58yqb xaf1y1gt5h85x2px4WkPm8X58xvYLW5uOcpisenxNVaLy7vmsFnMOL+PyaL7+g42i+XH/zFZ /N+zg91i6dabjA58Hpf7epk8Nq3qZPPYvKTeo+XkfhaPj09vsXj0bVnF6HH8xnYmj8+b5Dza D3QzBXBGcdmkpOZklqUW6dslcGW8OLqGpWC3QMX+D8eZGxhf83YxcnJICJhIPN22hLmLkYtD SGA3o8TSJ9NYIBLSEtc3TmCHsIUlVv57zg5R1MQkMalpARtIgk1AW+Lu9C1MILYIUNGRb22M IEXMAt+ZJA5MmMAMkhAWiJKYvGkBK4jNIqAqMfv+G7CpvAI2Evuv/2WC2CAvsXrDAbB6TgFb iYP/F4DFhYBqdh/9yTqBkW8BI8MqRsnUguLc9NxiwwLDvNRyveLE3OLSvHS95PzcTYzgINfS 3MG4fdUHvUOMTByMhxglOJiVRHgFxR/GCfGmJFZWpRblxxeV5qQWH2KU5mBREue9UbgwTkgg PbEkNTs1tSC1CCbLxMEp1cAkf+LK5J/bAn5rPpBY1NN2MrXH4G3vSqPSoO7ue866O0RY153+ rnn+u2n/Eedtbwwz2K44xXPlPJjZfUtac9b8Ga8FWtYImU14KqkeylhmHbXdtN/Yc2thfOyN NTGpTK+NzmbZiEstnpfr9kV+k/nbff+YWPPE+CvYvv6fMV/u1boHu28c3WubLnL7lPfWAjW9 L/x6xn/VeiKmuMX5sLeycJp+96t6keTDtUQ/eYPHkl0nC9ed90gv3G7tz5rUPqHpjsbvV7kv d77aKtyYnhTwzHhVwM/Sr66i36fqKj03kWNqD797/TFvlHXxH72p6f+a/Ay9Df5VblKbYLNx yt83M4ufz/teKv7314TVZqFKLMUZiYZazEXFiQAlj3q24QIAAA== X-CMS-MailID: 20200613030438epcas5p337ed074612a2a1e8b4d6ecb3dda30b5c X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P X-CMS-RootMailID: 20200613030438epcas5p337ed074612a2a1e8b4d6ecb3dda30b5c References: <20200613024706.27975-1-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 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