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From: "Alim Akhtar" <alim.akhtar@samsung.com>
To: "'Chanho Park'" <chanho61.park@samsung.com>,
	"'Avri Altman'" <avri.altman@wdc.com>,
	"'James E . J . Bottomley'" <jejb@linux.ibm.com>,
	"'Martin K . Petersen'" <martin.petersen@oracle.com>,
	"'Krzysztof Kozlowski'" <krzysztof.kozlowski@canonical.com>
Cc: "'Bean Huo'" <beanhuo@micron.com>,
	"'Bart Van Assche'" <bvanassche@acm.org>,
	"'Adrian Hunter'" <adrian.hunter@intel.com>,
	"'Christoph Hellwig'" <hch@infradead.org>,
	"'Can Guo'" <cang@codeaurora.org>,
	"'Jaegeuk Kim'" <jaegeuk@kernel.org>,
	"'Gyunghoon Kwon'" <goodjob.kwon@samsung.com>,
	<linux-samsung-soc@vger.kernel.org>, <linux-scsi@vger.kernel.org>,
	"'jongmin jeong'" <jjmin.jeong@samsung.com>
Subject: RE: [PATCH v3 01/17] scsi: ufs: add quirk to handle broken UIC command
Date: Thu, 23 Sep 2021 09:14:42 +0530	[thread overview]
Message-ID: <000601d7b02d$5a2e2730$0e8a7590$@samsung.com> (raw)
In-Reply-To: <20210917065436.145629-2-chanho61.park@samsung.com>

Hi Chanho 

>-----Original Message-----
>From: Chanho Park [mailto:chanho61.park@samsung.com]
>Sent: Friday, September 17, 2021 12:24 PM
>To: Alim Akhtar <alim.akhtar@samsung.com>; Avri Altman
><avri.altman@wdc.com>; James E . J . Bottomley <jejb@linux.ibm.com>; Martin
>K . Petersen <martin.petersen@oracle.com>; Krzysztof Kozlowski
><krzysztof.kozlowski@canonical.com>
>Cc: Bean Huo <beanhuo@micron.com>; Bart Van Assche
><bvanassche@acm.org>; Adrian Hunter <adrian.hunter@intel.com>; Christoph
>Hellwig <hch@infradead.org>; Can Guo <cang@codeaurora.org>; Jaegeuk Kim
><jaegeuk@kernel.org>; Gyunghoon Kwon <goodjob.kwon@samsung.com>;
>linux-samsung-soc@vger.kernel.org; linux-scsi@vger.kernel.org; jongmin jeong
><jjmin.jeong@samsung.com>; Chanho Park <chanho61.park@samsung.com>
>Subject: [PATCH v3 01/17] scsi: ufs: add quirk to handle broken UIC command
>
>From: jongmin jeong <jjmin.jeong@samsung.com>
>
>samsung ExynosAuto9 SoC has two types of host controller interface to support
>the virtualization of UFS Device.
>One is the physical host(PH) that the same as conventaional UFSHCI, and the
>other is the virtual host(VH) that support data transfer function only.
>
>In this structure, the virtual host does not support UIC command.
>To support this, we add the quirk and return 0 when the UIC command send
>function is called.
>
>Cc: Alim Akhtar <alim.akhtar@samsung.com>
>Cc: James E.J. Bottomley <jejb@linux.ibm.com>
>Cc: Martin K. Petersen <martin.petersen@oracle.com>
>Cc: Bart Van Assche <bvanassche@acm.org>
>Signed-off-by: jongmin jeong <jjmin.jeong@samsung.com>
>Signed-off-by: Chanho Park <chanho61.park@samsung.com>
>---
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>

> drivers/scsi/ufs/ufshcd.c | 3 +++
> drivers/scsi/ufs/ufshcd.h | 6 ++++++
> 2 files changed, 9 insertions(+)
>
>diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index
>3841ab49f556..8a45e8c05965 100644
>--- a/drivers/scsi/ufs/ufshcd.c
>+++ b/drivers/scsi/ufs/ufshcd.c
>@@ -2324,6 +2324,9 @@ int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct
>uic_command *uic_cmd)
> 	int ret;
> 	unsigned long flags;
>
>+	if (hba->quirks & UFSHCD_QUIRK_BROKEN_UIC_CMD)
>+		return 0;
>+
> 	ufshcd_hold(hba, false);
> 	mutex_lock(&hba->uic_cmd_mutex);
> 	ufshcd_add_delay_before_dme_cmd(hba);
>diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index
>52ea6f350b18..e1d8fd432614 100644
>--- a/drivers/scsi/ufs/ufshcd.h
>+++ b/drivers/scsi/ufs/ufshcd.h
>@@ -588,6 +588,12 @@ enum ufshcd_quirks {
> 	 * This quirk allows only sg entries aligned with page size.
> 	 */
> 	UFSHCD_QUIRK_ALIGN_SG_WITH_PAGE_SIZE		= 1 << 14,
>+
>+	/*
>+	 * This quirk needs to be enabled if the host controller does not
>+	 * support UIC command
>+	 */
>+	UFSHCD_QUIRK_BROKEN_UIC_CMD			= 1 << 15,
> };
>
> enum ufshcd_caps {
>--
>2.33.0



  reply	other threads:[~2021-09-23  3:48 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20210917065522epcas2p2c9c7baccfc82b3798804c351dbf676eb@epcas2p2.samsung.com>
2021-09-17  6:54 ` [PATCH v3 00/17] introduce exynosauto v9 ufs driver Chanho Park
     [not found]   ` <CGME20210917065522epcas2p49ce06e9686c9b6f5cb1dd16ca9d82052@epcas2p4.samsung.com>
2021-09-17  6:54     ` [PATCH v3 01/17] scsi: ufs: add quirk to handle broken UIC command Chanho Park
2021-09-23  3:44       ` Alim Akhtar [this message]
     [not found]   ` <CGME20210917065522epcas2p4ed13768faa6aa6d33116606e2601321e@epcas2p4.samsung.com>
2021-09-17  6:54     ` [PATCH v3 02/17] scsi: ufs: add quirk to enable host controller without ph configuration Chanho Park
2021-09-23  3:48       ` Alim Akhtar
     [not found]   ` <CGME20210917065522epcas2p26f56b37c3f7505b9d0e34bc2162fdbbd@epcas2p2.samsung.com>
2021-09-17  6:54     ` [PATCH v3 03/17] scsi: ufs: ufs-exynos: change pclk available max value Chanho Park
2021-09-27  5:25       ` Inki Dae
2021-09-27  6:46         ` Chanho Park
2021-09-27  7:11           ` Inki Dae
2021-09-27 11:08             ` Chanho Park
2021-09-28  2:18               ` Inki Dae
     [not found]   ` <CGME20210917065522epcas2p23066a1bd5e39ac1931d7e38064fe23dd@epcas2p2.samsung.com>
2021-09-17  6:54     ` [PATCH v3 04/17] scsi: ufs: ufs-exynos: simplify drv_data retrieval Chanho Park
     [not found]   ` <CGME20210917065523epcas2p3ff66daa15c8c782f839422756c388d93@epcas2p3.samsung.com>
2021-09-17  6:54     ` [PATCH v3 05/17] dt-bindings: ufs: exynos-ufs: add sysreg regmap property Chanho Park
2021-09-22 19:57       ` Rob Herring
2021-09-23  0:47         ` Chanho Park
2021-09-23 12:39           ` Rob Herring
2021-09-24  1:10             ` Chanho Park
     [not found]   ` <CGME20210917065523epcas2p477a63b06cbb9f5588aa2c149c9d1db10@epcas2p4.samsung.com>
2021-09-17  6:54     ` [PATCH v3 06/17] scsi: ufs: ufs-exynos: get sysreg regmap for io-coherency Chanho Park
2021-09-22 19:55       ` Rob Herring
2021-09-23  0:39         ` Chanho Park
2021-09-23 12:26           ` Rob Herring
2021-09-24  0:59             ` Chanho Park
     [not found]   ` <CGME20210917065523epcas2p44a9f121c18e0f3a5614f980c9eeffa16@epcas2p4.samsung.com>
2021-09-17  6:54     ` [PATCH v3 07/17] scsi: ufs: ufs-exynos: add refclkout_stop control Chanho Park
     [not found]   ` <CGME20210917065523epcas2p1215e9f56482339ca8a9346a0ac2bfe23@epcas2p1.samsung.com>
2021-09-17  6:54     ` [PATCH v3 08/17] scsi: ufs: ufs-exynos: add setup_clocks callback Chanho Park
2021-09-23  3:51       ` Alim Akhtar
     [not found]   ` <CGME20210917065523epcas2p15b648b88af85252fe12ff8026307526a@epcas2p1.samsung.com>
2021-09-17  6:54     ` [PATCH v3 09/17] scsi: ufs: ufs-exynos: correct timeout value setting registers Chanho Park
2021-09-23  4:14       ` Alim Akhtar
2021-09-23  5:47         ` Chanho Park
     [not found]   ` <CGME20210917065523epcas2p39e18203beafe9377e9dac819f01b804f@epcas2p3.samsung.com>
2021-09-17  6:54     ` [PATCH v3 10/17] scsi: ufs: ufs-exynos: support custom version of ufs_hba_variant_ops Chanho Park
2021-09-23  4:28       ` Alim Akhtar
     [not found]   ` <CGME20210917065523epcas2p3b178e3d9d2d4db628f597732be9c6856@epcas2p3.samsung.com>
2021-09-17  6:54     ` [PATCH v3 11/17] scsi: ufs: ufs-exynos: add EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR option Chanho Park
2021-09-23  4:32       ` Alim Akhtar
     [not found]   ` <CGME20210917065523epcas2p2cb63cd8924be44e6eaa42c7213bd15d4@epcas2p2.samsung.com>
2021-09-17  6:54     ` [PATCH v3 12/17] scsi: ufs: ufs-exynos: factor out priv data init Chanho Park
     [not found]   ` <CGME20210917065523epcas2p4fc1be41c739361dd6ae9d167cfc631dc@epcas2p4.samsung.com>
2021-09-17  6:54     ` [PATCH v3 13/17] scsi: ufs: ufs-exynos: add pre/post_hce_enable drv callbacks Chanho Park
2021-09-23  4:51       ` Alim Akhtar
     [not found]   ` <CGME20210917065523epcas2p47156d9fba5b8d8a5e5908ccdc0ae1655@epcas2p4.samsung.com>
2021-09-17  6:54     ` [PATCH v3 14/17] scsi: ufs: ufs-exynos: support exynosauto v9 ufs driver Chanho Park
     [not found]   ` <CGME20210917065524epcas2p18a720757ef3c4fc08d4bc8d16f9fe7fe@epcas2p1.samsung.com>
2021-09-17  6:54     ` [PATCH v3 15/17] scsi: ufs: ufs-exynos: multi-host configuration for exynosauto Chanho Park
2021-09-27  5:31       ` Inki Dae
2021-09-27  6:56         ` Chanho Park
     [not found]   ` <CGME20210917065524epcas2p3929f70cb0b62e6ca85a6f4814b61fae1@epcas2p3.samsung.com>
2021-09-17  6:54     ` [PATCH v3 16/17] scsi: ufs: ufs-exynos: introduce exynosauto v9 virtual host Chanho Park
     [not found]   ` <CGME20210917065524epcas2p455b2900227b6a20994bec4816248f2bf@epcas2p4.samsung.com>
2021-09-17  6:54     ` [PATCH v3 17/17] dt-bindings: ufs: exynos-ufs: add exynosautov9 compatible Chanho Park
2021-09-22 19:58       ` Rob Herring

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