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From: Asutosh Das <asutoshd@codeaurora.org>
To: subhashj@codeaurora.org, cang@codeaurora.org,
	rnayak@codeaurora.org, vinholikatti@gmail.com,
	jejb@linux.vnet.ibm.com, martin.petersen@oracle.com,
	linux-scsi@vger.kernel.org
Cc: Asutosh Das <asutoshd@codeaurora.org>,
	linux-arm-msm@vger.kernel.org, Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Alim Akhtar <alim.akhtar@samsung.com>,
	Avri Altman <avri.altman@wdc.com>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	linux-kernel@vger.kernel.org (open list)
Subject: [<RFC PATCH v1> 2/2] ufs-qcom: scsi: configure write booster type
Date: Fri, 21 Feb 2020 16:47:21 -0800	[thread overview]
Message-ID: <a67a815764ba60aea2f8b2890f6c65c9ea87aafc.1582330473.git.asutoshd@codeaurora.org> (raw)
In-Reply-To: <cover.1582330473.git.asutoshd@codeaurora.org>
In-Reply-To: <cover.1582330473.git.asutoshd@codeaurora.org>

Configure the WriteBooster type to preserve user-space mode.
This would ensure that no user-space capacity is reduced
when write booster is enabled.

Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
---
 drivers/scsi/ufs/ufs-qcom.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index 8339050..313b4a2 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -1686,6 +1686,12 @@ static void ufs_qcom_device_reset(struct ufs_hba *hba)
 	usleep_range(10, 15);
 }
 
+static u32 ufs_qcom_get_user_cap_mode(struct ufs_hba *hba)
+{
+	/* QCom prefers no user-space reduction mode */
+	return UFS_WB_BUFF_PRESERVE_USER_SPACE;
+}
+
 /**
  * struct ufs_hba_qcom_vops - UFS QCOM specific variant operations
  *
@@ -1707,6 +1713,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
 	.resume			= ufs_qcom_resume,
 	.dbg_register_dump	= ufs_qcom_dump_dbg_regs,
 	.device_reset		= ufs_qcom_device_reset,
+	.get_user_cap_mode	= ufs_qcom_get_user_cap_mode,
 };
 
 /**
-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.


WARNING: multiple messages have this Message-ID (diff)
From: Asutosh Das <asutoshd@codeaurora.org>
To: asutoshd@qti.qualcomm.com, linux-scsi@vger.kernel.org
Subject: [<RFC PATCH v1> 2/2] ufs-qcom: scsi: configure write booster type
Date: Fri, 21 Feb 2020 16:38:47 -0800	[thread overview]
Message-ID: <a67a815764ba60aea2f8b2890f6c65c9ea87aafc.1582330473.git.asutoshd@codeaurora.org> (raw)
In-Reply-To: <cover.1582330473.git.asutoshd@codeaurora.org>
In-Reply-To: <cover.1582330473.git.asutoshd@codeaurora.org>

Configure the WriteBooster type to preserve user-space mode.
This would ensure that no user-space capacity is reduced
when write booster is enabled.

Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
---
 drivers/scsi/ufs/ufs-qcom.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index 8339050..313b4a2 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -1686,6 +1686,12 @@ static void ufs_qcom_device_reset(struct ufs_hba *hba)
 	usleep_range(10, 15);
 }
 
+static u32 ufs_qcom_get_user_cap_mode(struct ufs_hba *hba)
+{
+	/* QCom prefers no user-space reduction mode */
+	return UFS_WB_BUFF_PRESERVE_USER_SPACE;
+}
+
 /**
  * struct ufs_hba_qcom_vops - UFS QCOM specific variant operations
  *
@@ -1707,6 +1713,7 @@ static const struct ufs_hba_variant_ops ufs_hba_qcom_vops = {
 	.resume			= ufs_qcom_resume,
 	.dbg_register_dump	= ufs_qcom_dump_dbg_regs,
 	.device_reset		= ufs_qcom_device_reset,
+	.get_user_cap_mode	= ufs_qcom_get_user_cap_mode,
 };
 
 /**
-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.


  parent reply	other threads:[~2020-02-22  0:47 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-22  0:38 [<RFC PATCH v1> 0/2] Write Booster Implementation Asutosh Das
2020-02-22  0:47 ` Asutosh Das
2020-02-22  0:38 ` [<RFC PATCH v1> 1/2] scsi: ufs: add write booster feature support Asutosh Das
2020-02-22  0:47   ` Asutosh Das
2020-02-22  2:40   ` Bart Van Assche
2020-03-16 21:13     ` Asutosh Das (asd)
2020-02-23  9:03   ` Avri Altman
2020-03-16 23:45     ` Asutosh Das (asd)
2020-02-25 10:58   ` Avri Altman
2020-02-25 11:21     ` Avri Altman
2020-02-25 12:50   ` Avri Altman
2020-02-26 17:57     ` Asutosh Das (asd)
2020-03-16 23:52     ` Asutosh Das (asd)
2020-02-22  0:38 ` Asutosh Das [this message]
2020-02-22  0:47   ` [<RFC PATCH v1> 2/2] ufs-qcom: scsi: configure write booster type Asutosh Das

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