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Date: Sun, 03 May 2020 09:51:24 +0800
From: Can Guo <cang@...eaurora.org>
To: Stanley Chu <stanley.chu@...iatek.com>
Cc: linux-scsi@...r.kernel.org, martin.petersen@...cle.com,
avri.altman@....com, alim.akhtar@...sung.com, jejb@...ux.ibm.com,
asutoshd@...eaurora.org, beanhuo@...ron.com,
matthias.bgg@...il.com, bvanassche@....org,
linux-mediatek@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
kuohong.wang@...iatek.com, peter.wang@...iatek.com,
chun-hung.wu@...iatek.com, andy.teng@...iatek.com
Subject: Re: [PATCH v3 2/5] scsi: ufs: add "index" in parameter list of
ufshcd_query_flag()
On 2020-05-01 22:38, Stanley Chu wrote:
> For preparation of LU Dedicated buffer mode support on WriteBooster
> feature, "index" parameter shall be added and allowed to be specified
> by callers.
>
> Signed-off-by: Stanley Chu <stanley.chu@...iatek.com>
> Reviewed-by: Bean Huo <beanhuo@...ron.com>
Reviewed-by: Can Guo <cang@...eaurora.org>
> ---
> drivers/scsi/ufs/ufs-sysfs.c | 2 +-
> drivers/scsi/ufs/ufshcd.c | 28 +++++++++++++++-------------
> drivers/scsi/ufs/ufshcd.h | 2 +-
> 3 files changed, 17 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufs-sysfs.c
> b/drivers/scsi/ufs/ufs-sysfs.c
> index 93484408bc40..b86b6a40d7e6 100644
> --- a/drivers/scsi/ufs/ufs-sysfs.c
> +++ b/drivers/scsi/ufs/ufs-sysfs.c
> @@ -631,7 +631,7 @@ static ssize_t _name##_show(struct device
> *dev, \
> struct ufs_hba *hba = dev_get_drvdata(dev); \
> pm_runtime_get_sync(hba->dev); \
> ret = ufshcd_query_flag(hba, UPIU_QUERY_OPCODE_READ_FLAG, \
> - QUERY_FLAG_IDN##_uname, &flag); \
> + QUERY_FLAG_IDN##_uname, 0, &flag); \
> pm_runtime_put_sync(hba->dev); \
> if (ret) \
> return -EINVAL; \
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index c6668799d956..f23705379b7d 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -2784,13 +2784,13 @@ static inline void ufshcd_init_query(struct
> ufs_hba *hba,
> }
>
> static int ufshcd_query_flag_retry(struct ufs_hba *hba,
> - enum query_opcode opcode, enum flag_idn idn, bool *flag_res)
> + enum query_opcode opcode, enum flag_idn idn, u8 index, bool
> *flag_res)
> {
> int ret;
> int retries;
>
> for (retries = 0; retries < QUERY_REQ_RETRIES; retries++) {
> - ret = ufshcd_query_flag(hba, opcode, idn, flag_res);
> + ret = ufshcd_query_flag(hba, opcode, idn, index, flag_res);
> if (ret)
> dev_dbg(hba->dev,
> "%s: failed with error %d, retries %d\n",
> @@ -2811,16 +2811,17 @@ static int ufshcd_query_flag_retry(struct
> ufs_hba *hba,
> * @hba: per-adapter instance
> * @opcode: flag query to perform
> * @idn: flag idn to access
> + * @index: flag index to access
> * @flag_res: the flag value after the query request completes
> *
> * Returns 0 for success, non-zero in case of failure
> */
> int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
> - enum flag_idn idn, bool *flag_res)
> + enum flag_idn idn, u8 index, bool *flag_res)
> {
> struct ufs_query_req *request = NULL;
> struct ufs_query_res *response = NULL;
> - int err, index = 0, selector = 0;
> + int err, selector = 0;
> int timeout = QUERY_REQ_TIMEOUT;
>
> BUG_ON(!hba);
> @@ -4177,7 +4178,7 @@ static int ufshcd_complete_dev_init(struct
> ufs_hba *hba)
> bool flag_res = true;
>
> err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_SET_FLAG,
> - QUERY_FLAG_IDN_FDEVICEINIT, NULL);
> + QUERY_FLAG_IDN_FDEVICEINIT, 0, NULL);
> if (err) {
> dev_err(hba->dev,
> "%s setting fDeviceInit flag failed with error %d\n",
> @@ -4188,7 +4189,7 @@ static int ufshcd_complete_dev_init(struct
> ufs_hba *hba)
> /* poll for max. 1000 iterations for fDeviceInit flag to clear */
> for (i = 0; i < 1000 && !err && flag_res; i++)
> err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_READ_FLAG,
> - QUERY_FLAG_IDN_FDEVICEINIT, &flag_res);
> + QUERY_FLAG_IDN_FDEVICEINIT, 0, &flag_res);
>
> if (err)
> dev_err(hba->dev,
> @@ -5003,7 +5004,7 @@ static int ufshcd_enable_auto_bkops(struct
> ufs_hba *hba)
> goto out;
>
> err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_SET_FLAG,
> - QUERY_FLAG_IDN_BKOPS_EN, NULL);
> + QUERY_FLAG_IDN_BKOPS_EN, 0, NULL);
> if (err) {
> dev_err(hba->dev, "%s: failed to enable bkops %d\n",
> __func__, err);
> @@ -5053,7 +5054,7 @@ static int ufshcd_disable_auto_bkops(struct
> ufs_hba *hba)
> }
>
> err = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_CLEAR_FLAG,
> - QUERY_FLAG_IDN_BKOPS_EN, NULL);
> + QUERY_FLAG_IDN_BKOPS_EN, 0, NULL);
> if (err) {
> dev_err(hba->dev, "%s: failed to disable bkops %d\n",
> __func__, err);
> @@ -5219,7 +5220,7 @@ static int ufshcd_wb_ctrl(struct ufs_hba *hba,
> bool enable)
> opcode = UPIU_QUERY_OPCODE_CLEAR_FLAG;
>
> ret = ufshcd_query_flag_retry(hba, opcode,
> - QUERY_FLAG_IDN_WB_EN, NULL);
> + QUERY_FLAG_IDN_WB_EN, 0, NULL);
> if (ret) {
> dev_err(hba->dev, "%s write booster %s failed %d\n",
> __func__, enable ? "enable" : "disable", ret);
> @@ -5243,7 +5244,7 @@ static int
> ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set)
> val = UPIU_QUERY_OPCODE_CLEAR_FLAG;
>
> return ufshcd_query_flag_retry(hba, val,
> - QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8,
> + QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8, 0,
> NULL);
> }
>
> @@ -5264,7 +5265,8 @@ static int ufshcd_wb_buf_flush_enable(struct
> ufs_hba *hba)
> return 0;
>
> ret = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_SET_FLAG,
> - QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN, NULL);
> + QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN,
> + 0, NULL);
> if (ret)
> dev_err(hba->dev, "%s WB - buf flush enable failed %d\n",
> __func__, ret);
> @@ -5283,7 +5285,7 @@ static int ufshcd_wb_buf_flush_disable(struct
> ufs_hba *hba)
> return 0;
>
> ret = ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_CLEAR_FLAG,
> - QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN, NULL);
> + QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN, 0, NULL);
> if (ret) {
> dev_warn(hba->dev, "%s: WB - buf flush disable failed %d\n",
> __func__, ret);
> @@ -7263,7 +7265,7 @@ static int ufshcd_device_params_init(struct
> ufs_hba *hba)
> ufshcd_get_ref_clk_gating_wait(hba);
>
> if (!ufshcd_query_flag_retry(hba, UPIU_QUERY_OPCODE_READ_FLAG,
> - QUERY_FLAG_IDN_PWR_ON_WPE, &flag))
> + QUERY_FLAG_IDN_PWR_ON_WPE, 0, &flag))
> hba->dev_info.f_power_on_wp_en = flag;
>
> /* Probe maximum power mode co-supported by both UFS host and device
> */
> diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
> index 056537e52c19..e555d794d441 100644
> --- a/drivers/scsi/ufs/ufshcd.h
> +++ b/drivers/scsi/ufs/ufshcd.h
> @@ -946,7 +946,7 @@ int ufshcd_read_desc_param(struct ufs_hba *hba,
> int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
> enum attr_idn idn, u8 index, u8 selector, u32 *attr_val);
> int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
> - enum flag_idn idn, bool *flag_res);
> + enum flag_idn idn, u8 index, bool *flag_res);
>
> void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
> void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
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