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Message-Id: <20210318014544.1976-1-zbestahu@gmail.com>
Date: Thu, 18 Mar 2021 09:45:44 +0800
From: Yue Hu <zbestahu@...il.com>
To: avri.altman@....com, alim.akhtar@...sung.com,
martin.petersen@...cle.com, jejb@...ux.ibm.com,
linux-scsi@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, huyue2@...ong.com, zbestahu@....com
Subject: [PATCH v2] scsi: ufs: Tidy up WB configuration code
From: Yue Hu <huyue2@...ong.com>
There are similar code implementations for WB configuration in
ufshcd_wb_{ctrl, toggle_flush_during_h8, toggle_flush}. We can
extract the part to create a new helper with a flag parameter to
reduce code duplication.
Meanwhile, rename ufshcd_wb_ctrl() to ufshcd_wb_toggle() for better
readability.
And remove unnecessary log messages from ufshcd_wb_config() since
relevant toggle function will spew log respectively. Also change
ufshcd_wb_toggle_flush{__during_h8} to void type accordingly.
Signed-off-by: Yue Hu <huyue2@...ong.com>
---
v2: use opcode instead of val, update minor log words
drivers/scsi/ufs/ufs-sysfs.c | 2 +-
drivers/scsi/ufs/ufshcd.c | 97 +++++++++++++++++++-------------------------
drivers/scsi/ufs/ufshcd.h | 2 +-
3 files changed, 43 insertions(+), 58 deletions(-)
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c
index acc54f5..d7c3cff 100644
--- a/drivers/scsi/ufs/ufs-sysfs.c
+++ b/drivers/scsi/ufs/ufs-sysfs.c
@@ -246,7 +246,7 @@ static ssize_t wb_on_store(struct device *dev, struct device_attribute *attr,
}
pm_runtime_get_sync(hba->dev);
- res = ufshcd_wb_ctrl(hba, wb_enable);
+ res = ufshcd_wb_toggle(hba, wb_enable);
pm_runtime_put_sync(hba->dev);
out:
up(&hba->host_sem);
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 7716175..866e73b 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -247,8 +247,8 @@ static int ufshcd_change_power_mode(struct ufs_hba *hba,
static inline int ufshcd_config_vreg_hpm(struct ufs_hba *hba,
struct ufs_vreg *vreg);
static int ufshcd_try_to_abort_task(struct ufs_hba *hba, int tag);
-static int ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set);
-static inline int ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable);
+static void ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set);
+static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable);
static void ufshcd_hba_vreg_set_lpm(struct ufs_hba *hba);
static void ufshcd_hba_vreg_set_hpm(struct ufs_hba *hba);
@@ -275,20 +275,12 @@ static inline void ufshcd_disable_irq(struct ufs_hba *hba)
static inline void ufshcd_wb_config(struct ufs_hba *hba)
{
- int ret;
-
if (!ufshcd_is_wb_allowed(hba))
return;
- ret = ufshcd_wb_ctrl(hba, true);
- if (ret)
- dev_err(hba->dev, "%s: Enable WB failed: %d\n", __func__, ret);
- else
- dev_info(hba->dev, "%s: Write Booster Configured\n", __func__);
- ret = ufshcd_wb_toggle_flush_during_h8(hba, true);
- if (ret)
- dev_err(hba->dev, "%s: En WB flush during H8: failed: %d\n",
- __func__, ret);
+ ufshcd_wb_toggle(hba, true);
+
+ ufshcd_wb_toggle_flush_during_h8(hba, true);
if (!(hba->quirks & UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL))
ufshcd_wb_toggle_flush(hba, true);
}
@@ -1268,7 +1260,7 @@ static int ufshcd_devfreq_scale(struct ufs_hba *hba, bool scale_up)
/* Enable Write Booster if we have scaled up else disable it */
downgrade_write(&hba->clk_scaling_lock);
is_writelock = false;
- ufshcd_wb_ctrl(hba, scale_up);
+ ufshcd_wb_toggle(hba, scale_up);
out_unprepare:
ufshcd_clock_scaling_unprepare(hba, is_writelock);
@@ -5432,85 +5424,78 @@ static void ufshcd_bkops_exception_event_handler(struct ufs_hba *hba)
__func__, err);
}
-int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable)
+static int __ufshcd_wb_toggle(struct ufs_hba *hba, bool set, enum flag_idn idn)
{
- int ret;
u8 index;
enum query_opcode opcode;
+ if (set)
+ opcode = UPIU_QUERY_OPCODE_SET_FLAG;
+ else
+ opcode = UPIU_QUERY_OPCODE_CLEAR_FLAG;
+
+ index = ufshcd_wb_get_query_index(hba);
+ return ufshcd_query_flag_retry(hba, opcode, idn, index, NULL);
+}
+
+int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable)
+{
+ int ret;
+
if (!ufshcd_is_wb_allowed(hba))
return 0;
if (!(enable ^ hba->dev_info.wb_enabled))
return 0;
- if (enable)
- opcode = UPIU_QUERY_OPCODE_SET_FLAG;
- else
- opcode = UPIU_QUERY_OPCODE_CLEAR_FLAG;
- index = ufshcd_wb_get_query_index(hba);
- ret = ufshcd_query_flag_retry(hba, opcode,
- QUERY_FLAG_IDN_WB_EN, index, NULL);
+ ret = __ufshcd_wb_toggle(hba, enable, QUERY_FLAG_IDN_WB_EN);
if (ret) {
- dev_err(hba->dev, "%s write booster %s failed %d\n",
+ dev_err(hba->dev, "%s Write Booster %s failed %d\n",
__func__, enable ? "enable" : "disable", ret);
return ret;
}
hba->dev_info.wb_enabled = enable;
- dev_dbg(hba->dev, "%s write booster %s %d\n",
- __func__, enable ? "enable" : "disable", ret);
+ dev_info(hba->dev, "%s Write Booster %s\n",
+ __func__, enable ? "enabled" : "disabled");
return ret;
}
-static int ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set)
+static void ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set)
{
- int val;
- u8 index;
-
- if (set)
- val = UPIU_QUERY_OPCODE_SET_FLAG;
- else
- val = UPIU_QUERY_OPCODE_CLEAR_FLAG;
+ int ret;
- index = ufshcd_wb_get_query_index(hba);
- return ufshcd_query_flag_retry(hba, val,
- QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8,
- index, NULL);
+ ret = __ufshcd_wb_toggle(hba, set,
+ QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8);
+ if (ret) {
+ dev_err(hba->dev, "%s: WB-Buf Flush during H8 %s failed: %d\n",
+ __func__, set ? "enable" : "disable", ret);
+ return;
+ }
+ dev_dbg(hba->dev, "%s WB-Buf Flush during H8 %s\n",
+ __func__, set ? "enabled" : "disabled");
}
-static inline int ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable)
+static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable)
{
int ret;
- u8 index;
- enum query_opcode opcode;
if (!ufshcd_is_wb_allowed(hba) ||
hba->dev_info.wb_buf_flush_enabled == enable)
- return 0;
-
- if (enable)
- opcode = UPIU_QUERY_OPCODE_SET_FLAG;
- else
- opcode = UPIU_QUERY_OPCODE_CLEAR_FLAG;
+ return;
- index = ufshcd_wb_get_query_index(hba);
- ret = ufshcd_query_flag_retry(hba, opcode,
- QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN, index,
- NULL);
+ ret = __ufshcd_wb_toggle(hba, enable, QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN);
if (ret) {
dev_err(hba->dev, "%s WB-Buf Flush %s failed %d\n", __func__,
enable ? "enable" : "disable", ret);
- goto out;
+ return;
}
hba->dev_info.wb_buf_flush_enabled = enable;
- dev_dbg(hba->dev, "WB-Buf Flush %s\n", enable ? "enabled" : "disabled");
-out:
- return ret;
-
+ dev_dbg(hba->dev, "%s WB-Buf Flush %s\n",
+ __func__, enable ? "enabled" : "disabled");
}
static bool ufshcd_wb_presrv_usrspc_keep_vcc_on(struct ufs_hba *hba,
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 18e56c1..eddc819 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -1099,7 +1099,7 @@ int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba,
u8 *desc_buff, int *buff_len,
enum query_opcode desc_op);
-int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable);
+int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable);
/* Wrapper functions for safely calling variant operations */
static inline const char *ufshcd_get_var_name(struct ufs_hba *hba)
--
1.9.1
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