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Date: Tue, 22 Dec 2020 14:14:46 +0800
From: Can Guo <cang@...eaurora.org>
To: Bean Huo <huobean@...il.com>
Cc: alim.akhtar@...sung.com, avri.altman@....com,
asutoshd@...eaurora.org, jejb@...ux.ibm.com,
martin.petersen@...cle.com, stanley.chu@...iatek.com,
beanhuo@...ron.com, bvanassche@....org, tomas.winkler@...el.com,
linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 5/7] scsi: ufs: Group UFS WB related flags to struct
ufs_dev_info
On 2020-12-16 07:05, Bean Huo wrote:
> From: Bean Huo <beanhuo@...ron.com>
>
> UFS device-related flags should be grouped in ufs_dev_info. Take
> wb_enabled and wb_buf_flush_enabled out from the struct ufs_hba,
> group them to struct ufs_dev_info, and align the names of the structure
> members vertically.
>
Reviewed-by: Can Guo <cang@...eaurora.org>
> Signed-off-by: Bean Huo <beanhuo@...ron.com>
> ---
> drivers/scsi/ufs/ufs-sysfs.c | 2 +-
> drivers/scsi/ufs/ufs.h | 27 ++++++++++++++++-----------
> drivers/scsi/ufs/ufshcd.c | 21 ++++++++++-----------
> drivers/scsi/ufs/ufshcd.h | 4 +---
> 4 files changed, 28 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufs-sysfs.c
> b/drivers/scsi/ufs/ufs-sysfs.c
> index f3ca3d6b82c4..9a9acc722a37 100644
> --- a/drivers/scsi/ufs/ufs-sysfs.c
> +++ b/drivers/scsi/ufs/ufs-sysfs.c
> @@ -194,7 +194,7 @@ static ssize_t wb_on_show(struct device *dev,
> struct device_attribute *attr,
> {
> struct ufs_hba *hba = dev_get_drvdata(dev);
>
> - return sysfs_emit(buf, "%d\n", hba->wb_enabled);
> + return sysfs_emit(buf, "%d\n", hba->dev_info.wb_enabled);
> }
>
> static ssize_t wb_on_store(struct device *dev, struct device_attribute
> *attr,
> diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
> index a789e074ae3f..ec74cf360b1f 100644
> --- a/drivers/scsi/ufs/ufs.h
> +++ b/drivers/scsi/ufs/ufs.h
> @@ -527,20 +527,25 @@ struct ufs_vreg_info {
> };
>
> struct ufs_dev_info {
> - bool f_power_on_wp_en;
> + bool f_power_on_wp_en;
> /* Keeps information if any of the LU is power on write protected */
> - bool is_lu_power_on_wp;
> + bool is_lu_power_on_wp;
> /* Maximum number of general LU supported by the UFS device */
> - u8 max_lu_supported;
> - u8 wb_dedicated_lu;
> - u16 wmanufacturerid;
> + u8 max_lu_supported;
> + u16 wmanufacturerid;
> /*UFS device Product Name */
> - u8 *model;
> - u16 wspecversion;
> - u32 clk_gating_wait_us;
> - u8 b_wb_buffer_type;
> - bool b_rpm_dev_flush_capable;
> - u8 b_presrv_uspc_en;
> + u8 *model;
> + u16 wspecversion;
> + u32 clk_gating_wait_us;
> +
> + /* UFS WB related flags */
> + bool wb_enabled;
> + bool wb_buf_flush_enabled;
> + u8 wb_dedicated_lu;
> + u8 wb_buffer_type;
> +
> + 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 5f08f4a59a17..466a85051d54 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -589,8 +589,8 @@ static void ufshcd_device_reset(struct ufs_hba
> *hba)
> if (!err) {
> ufshcd_set_ufs_dev_active(hba);
> if (ufshcd_is_wb_allowed(hba)) {
> - hba->wb_enabled = false;
> - hba->wb_buf_flush_enabled = false;
> + hba->dev_info.wb_enabled = false;
> + hba->dev_info.wb_buf_flush_enabled = false;
> }
> }
> if (err != -EOPNOTSUPP)
> @@ -5359,7 +5359,7 @@ int ufshcd_wb_ctrl(struct ufs_hba *hba, bool
> enable)
> if (!ufshcd_is_wb_allowed(hba))
> return 0;
>
> - if (!(enable ^ hba->wb_enabled))
> + if (!(enable ^ hba->dev_info.wb_enabled))
> return 0;
> if (enable)
> opcode = UPIU_QUERY_OPCODE_SET_FLAG;
> @@ -5375,7 +5375,7 @@ int ufshcd_wb_ctrl(struct ufs_hba *hba, bool
> enable)
> return ret;
> }
>
> - hba->wb_enabled = enable;
> + hba->dev_info.wb_enabled = enable;
> dev_dbg(hba->dev, "%s write booster %s %d\n",
> __func__, enable ? "enable" : "disable", ret);
>
> @@ -5415,7 +5415,7 @@ static int ufshcd_wb_buf_flush_enable(struct
> ufs_hba *hba)
> int ret;
> u8 index;
>
> - if (!ufshcd_is_wb_allowed(hba) || hba->wb_buf_flush_enabled)
> + if (!ufshcd_is_wb_allowed(hba) || hba->dev_info.wb_buf_flush_enabled)
> return 0;
>
> index = ufshcd_wb_get_query_index(hba);
> @@ -5426,7 +5426,7 @@ static int ufshcd_wb_buf_flush_enable(struct
> ufs_hba *hba)
> dev_err(hba->dev, "%s WB - buf flush enable failed %d\n",
> __func__, ret);
> else
> - hba->wb_buf_flush_enabled = true;
> + hba->dev_info.wb_buf_flush_enabled = true;
>
> dev_dbg(hba->dev, "WB - Flush enabled: %d\n", ret);
> return ret;
> @@ -5437,7 +5437,7 @@ static int ufshcd_wb_buf_flush_disable(struct
> ufs_hba *hba)
> int ret;
> u8 index;
>
> - if (!ufshcd_is_wb_allowed(hba) || !hba->wb_buf_flush_enabled)
> + if (!ufshcd_is_wb_allowed(hba) ||
> !hba->dev_info.wb_buf_flush_enabled)
> return 0;
>
> index = ufshcd_wb_get_query_index(hba);
> @@ -5448,7 +5448,7 @@ static int ufshcd_wb_buf_flush_disable(struct
> ufs_hba *hba)
> dev_warn(hba->dev, "%s: WB - buf flush disable failed %d\n",
> __func__, ret);
> } else {
> - hba->wb_buf_flush_enabled = false;
> + hba->dev_info.wb_buf_flush_enabled = false;
> dev_dbg(hba->dev, "WB - Flush disabled: %d\n", ret);
> }
>
> @@ -7236,13 +7236,12 @@ static void ufshcd_wb_probe(struct ufs_hba
> *hba, u8 *desc_buf)
> * says, in dedicated wb buffer mode, a max of 1 lun would have wb
> * buffer configured.
> */
> - dev_info->b_wb_buffer_type =
> - desc_buf[DEVICE_DESC_PARAM_WB_TYPE];
> + dev_info->wb_buffer_type = desc_buf[DEVICE_DESC_PARAM_WB_TYPE];
>
> dev_info->b_presrv_uspc_en =
> desc_buf[DEVICE_DESC_PARAM_WB_PRESRV_USRSPC_EN];
>
> - if (dev_info->b_wb_buffer_type == WB_BUF_MODE_SHARED) {
> + if (dev_info->wb_buffer_type == WB_BUF_MODE_SHARED) {
> if (!get_unaligned_be32(desc_buf +
> DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS))
> goto wb_disabled;
> diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
> index 2a97006a2c93..ee97068158e2 100644
> --- a/drivers/scsi/ufs/ufshcd.h
> +++ b/drivers/scsi/ufs/ufshcd.h
> @@ -805,8 +805,6 @@ struct ufs_hba {
>
> struct device bsg_dev;
> struct request_queue *bsg_queue;
> - bool wb_buf_flush_enabled;
> - bool wb_enabled;
> struct delayed_work rpm_dev_flush_recheck_work;
>
> #ifdef CONFIG_SCSI_UFS_CRYPTO
> @@ -946,7 +944,7 @@ static inline bool
> ufshcd_keep_autobkops_enabled_except_suspend(
>
> static inline u8 ufshcd_wb_get_query_index(struct ufs_hba *hba)
> {
> - if (hba->dev_info.b_wb_buffer_type == WB_BUF_MODE_LU_DEDICATED)
> + if (hba->dev_info.wb_buffer_type == WB_BUF_MODE_LU_DEDICATED)
> return hba->dev_info.wb_dedicated_lu;
> return 0;
> }
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