From: Can Guo <cang@codeaurora.org>
To: Alim Akhtar <alim.akhtar@samsung.com>
Cc: robh@kernel.org, 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, linux-samsung-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 01/10] scsi: ufs: add quirk to fix mishandling utrlclr/utmrlclr
Date: Tue, 21 Apr 2020 13:52:21 +0800 [thread overview]
Message-ID: <a5410ec9a1f72c01f738bbcb911cc7b8@codeaurora.org> (raw)
In-Reply-To: <20200417175944.47189-2-alim.akhtar@samsung.com>
On 2020-04-18 01:59, Alim Akhtar wrote:
> 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.
>
> Signed-off-by: Seungwon Jeon <essuuj@gmail.com>
> Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Can Guo <cang@codeaurora.org>
> ---
> 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 {
>
> base-commit: 8f3d9f354286745c751374f5f1fcafee6b3f3136
next prev parent reply other threads:[~2020-04-21 5:52 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200417181006epcas5p269f8c4b94e60962a0b0318ef64a65364@epcas5p2.samsung.com>
2020-04-17 17:59 ` [PATCH v6 0/10] exynos-ufs: Add support for UFS HCI Alim Akhtar
[not found] ` <CGME20200417181008epcas5p460840c01c2c09ce1a69e83005b4bddbe@epcas5p4.samsung.com>
2020-04-17 17:59 ` [PATCH v6 01/10] scsi: ufs: add quirk to fix mishandling utrlclr/utmrlclr Alim Akhtar
2020-04-20 6:55 ` Avri Altman
2020-04-21 5:52 ` Can Guo [this message]
[not found] ` <CGME20200417181010epcas5p23cb018eee5b7ae0eba87d81dbaaec3ce@epcas5p2.samsung.com>
2020-04-17 17:59 ` [PATCH v6 02/10] scsi: ufs: add quirk to disallow reset of interrupt aggregation Alim Akhtar
2020-04-20 7:05 ` Avri Altman
[not found] ` <CGME20200417181012epcas5p2004ac8f0d793abd4d58c096ff490da68@epcas5p2.samsung.com>
2020-04-17 17:59 ` [PATCH v6 03/10] scsi: ufs: add quirk to enable host controller without hce Alim Akhtar
2020-04-20 7:14 ` Avri Altman
2020-04-21 5:59 ` Can Guo
2020-04-21 6:00 ` Can Guo
[not found] ` <CGME20200417181014epcas5p1343bc81fb246133cc332d3fc7a394c15@epcas5p1.samsung.com>
2020-04-17 17:59 ` [PATCH v6 04/10] scsi: ufs: introduce UFSHCD_QUIRK_PRDT_BYTE_GRAN quirk Alim Akhtar
2020-04-20 8:13 ` Avri Altman
2020-04-22 6:54 ` Christoph Hellwig
2020-04-26 15:56 ` Alim Akhtar
[not found] ` <CGME20200417181016epcas5p2ee7ac86d743ceee9076690dc5b1e2f08@epcas5p2.samsung.com>
2020-04-17 17:59 ` [PATCH v6 05/10] scsi: ufs: add quirk to fix abnormal ocs fatal error Alim Akhtar
2020-04-20 8:55 ` Avri Altman
2020-04-21 7:46 ` Kiwoong Kim
2020-04-21 7:51 ` Kiwoong Kim
2020-04-21 12:07 ` Avri Altman
2020-04-26 15:54 ` Alim Akhtar
2020-04-22 6:55 ` Christoph Hellwig
2020-04-26 15:57 ` Alim Akhtar
[not found] ` <CGME20200417181018epcas5p1e51c7ca0fe81df16554548df5b82e3e4@epcas5p1.samsung.com>
2020-04-17 17:59 ` [PATCH v6 06/10] dt-bindings: phy: Document Samsung UFS PHY bindings Alim Akhtar
2020-04-21 16:55 ` Alim Akhtar
[not found] ` <CGME20200417181020epcas5p2121f17c89634d6ad8f30258339a6b249@epcas5p2.samsung.com>
2020-04-17 17:59 ` [PATCH v6 07/10] phy: samsung-ufs: add UFS PHY driver for samsung SoC Alim Akhtar
[not found] ` <CGME20200417181022epcas5p1f83138da6e76ff0917de88e913ef8e32@epcas5p1.samsung.com>
2020-04-17 17:59 ` [PATCH v6 08/10] dt-bindings: ufs: Add DT binding documentation for ufs Alim Akhtar
2020-04-21 16:56 ` Alim Akhtar
[not found] ` <CGME20200417181024epcas5p4231ae3dd2598155854e9b7ee52438bcb@epcas5p4.samsung.com>
2020-04-17 17:59 ` [PATCH v6 09/10] scsi: ufs-exynos: add UFS host support for Exynos SoCs Alim Akhtar
2020-04-17 18:20 ` Randy Dunlap
2020-04-20 10:26 ` Avri Altman
2020-04-21 0:59 ` Alim Akhtar
[not found] ` <CGME20200417181026epcas5p434bcc980e1fe334969ef6f1641525ee0@epcas5p4.samsung.com>
2020-04-17 17:59 ` [PATCH v6 10/10] arm64: dts: Add node for ufs exynos7 Alim Akhtar
2020-04-18 12:38 ` [PATCH v6 0/10] exynos-ufs: Add support for UFS HCI Avri Altman
2020-04-18 13:08 ` Alim Akhtar
2020-04-18 16:00 ` Avri Altman
2020-04-18 16:04 ` Avri Altman
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