From: Bean Huo <huobean@gmail.com>
To: alim.akhtar@samsung.com, avri.altman@wdc.com,
asutoshd@codeaurora.org, jejb@linux.ibm.com,
martin.petersen@oracle.com, stanley.chu@mediatek.com,
beanhuo@micron.com, bvanassche@acm.org, tomas.winkler@intel.com,
cang@codeaurora.org
Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v5 4/7] scsi: ufs: Remove two WB related fields from struct ufs_dev_info
Date: Wed, 16 Dec 2020 00:05:16 +0100 [thread overview]
Message-ID: <20201215230519.15158-5-huobean@gmail.com> (raw)
In-Reply-To: <20201215230519.15158-1-huobean@gmail.com>
From: Bean Huo <beanhuo@micron.com>
d_wb_alloc_units and d_ext_ufs_feature_sup only be used while WB probe.
They are just used to confirm the condition that "if bWriteBoosterBufferType
is set to 01h but dNumSharedWriteBoosterBufferAllocUnits is set to zero,
the WriteBooster feature is disabled", and if UFS device supports WB.
After that, no user uses them any more. So, don't need to keep time in
runtime.
Signed-off-by: Bean Huo <beanhuo@micron.com>
---
drivers/scsi/ufs/ufs.h | 2 --
drivers/scsi/ufs/ufshcd.c | 14 ++++++--------
2 files changed, 6 insertions(+), 10 deletions(-)
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index 14dfda735adf..a789e074ae3f 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -538,9 +538,7 @@ struct ufs_dev_info {
u8 *model;
u16 wspecversion;
u32 clk_gating_wait_us;
- u32 d_ext_ufs_feature_sup;
u8 b_wb_buffer_type;
- u32 d_wb_alloc_units;
bool b_rpm_dev_flush_capable;
u8 b_presrv_uspc_en;
};
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 6a5532b752aa..5f08f4a59a17 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -7207,6 +7207,7 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
struct ufs_dev_info *dev_info = &hba->dev_info;
u8 lun;
u32 d_lu_wb_buf_alloc;
+ u32 ext_ufs_feature;
if (!ufshcd_is_wb_allowed(hba))
return;
@@ -7224,11 +7225,10 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP + 4)
goto wb_disabled;
- dev_info->d_ext_ufs_feature_sup =
- get_unaligned_be32(desc_buf +
- DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
+ ext_ufs_feature = get_unaligned_be32(desc_buf +
+ DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
- if (!(dev_info->d_ext_ufs_feature_sup & UFS_DEV_WRITE_BOOSTER_SUP))
+ if (!(ext_ufs_feature & UFS_DEV_WRITE_BOOSTER_SUP))
goto wb_disabled;
/*
@@ -7243,10 +7243,8 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf)
desc_buf[DEVICE_DESC_PARAM_WB_PRESRV_USRSPC_EN];
if (dev_info->b_wb_buffer_type == WB_BUF_MODE_SHARED) {
- dev_info->d_wb_alloc_units =
- get_unaligned_be32(desc_buf +
- DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS);
- if (!dev_info->d_wb_alloc_units)
+ if (!get_unaligned_be32(desc_buf +
+ DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS))
goto wb_disabled;
} else {
for (lun = 0; lun < UFS_UPIU_MAX_WB_LUN_ID; lun++) {
--
2.17.1
next prev parent reply other threads:[~2020-12-15 23:21 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-15 23:05 [PATCH v5 0/7] Several changes for UFS WriteBooster Bean Huo
2020-12-15 23:05 ` [PATCH v5 1/7] scsi: ufs: Add "wb_on" sysfs node to control WB on/off Bean Huo
2020-12-22 6:08 ` Stanley Chu
2020-12-22 6:12 ` Can Guo
2020-12-22 20:57 ` Bean Huo
2020-12-22 22:11 ` Bean Huo
2020-12-23 1:31 ` Can Guo
2020-12-23 8:28 ` Bean Huo
2020-12-23 8:30 ` Bean Huo
2020-12-23 9:11 ` Bean Huo
2020-12-22 20:50 ` Bean Huo
2020-12-22 21:08 ` Bean Huo
2020-12-23 21:52 ` Bean Huo
2020-12-15 23:05 ` [PATCH v5 2/7] docs: ABI: Add wb_on documentation for UFS sysfs Bean Huo
2020-12-15 23:05 ` [PATCH v5 3/7] scsi: ufs: Changes comment in the function ufshcd_wb_probe() Bean Huo
2020-12-15 23:05 ` Bean Huo [this message]
2020-12-16 4:15 ` [PATCH v5 4/7] scsi: ufs: Remove two WB related fields from struct ufs_dev_info Stanley Chu
2020-12-15 23:05 ` [PATCH v5 5/7] scsi: ufs: Group UFS WB related flags to " Bean Huo
2020-12-16 4:16 ` Stanley Chu
2020-12-22 6:14 ` Can Guo
2020-12-15 23:05 ` [PATCH v5 6/7] scsi: ufs: Cleanup WB buffer flush toggle implementation Bean Huo
2020-12-16 4:17 ` Stanley Chu
2020-12-22 6:14 ` Can Guo
2020-12-15 23:05 ` [PATCH v5 7/7] scsi: ufs: Keep device active mode only fWriteBoosterBufferFlushDuringHibernate == 1 Bean Huo
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