> -----Original Message----- > From: asutoshd=codeaurora.org@xxxxxxxxxxxxxxxxx > [mailto:asutoshd=codeaurora.org@xxxxxxxxxxxxxxxxx] On Behalf Of Asutosh > Das (asd) > Sent: Tuesday, July 21, 2020 1:47 AM > To: SEO HOYOUNG; linux-scsi@xxxxxxxxxxxxxxx; alim.akhtar@xxxxxxxxxxx; > avri.altman@xxxxxxx; jejb@xxxxxxxxxxxxx; martin.petersen@xxxxxxxxxx; > beanhuo@xxxxxxxxxx; cang@xxxxxxxxxxxxxx; bvanassche@xxxxxxx; > grant.jung@xxxxxxxxxxx > Subject: Re: [RFC PATCH v2 1/3] scsi: ufs: modify write booster > > On 7/20/2020 3:40 AM, SEO HOYOUNG wrote: > > Add vendor specific functions for WB > > Use callback additional setting when use write booster. > > > > Signed-off-by: SEO HOYOUNG <hy50.seo@xxxxxxxxxxx> > > --- > > drivers/scsi/ufs/ufshcd.c | 23 ++++++++++++++++----- > > drivers/scsi/ufs/ufshcd.h | 43 +++++++++++++++++++++++++++++++++++++++ > > 2 files changed, 61 insertions(+), 5 deletions(-) > > > > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c > > index efc0a6cbfe22..efa16bf4fd76 100644 > > --- a/drivers/scsi/ufs/ufshcd.c > > +++ b/drivers/scsi/ufs/ufshcd.c > > @@ -3306,11 +3306,11 @@ int ufshcd_read_string_desc(struct ufs_hba *hba, > u8 desc_index, > > * > > * Return 0 in case of success, non-zero otherwise > > */ > > -static inline int ufshcd_read_unit_desc_param(struct ufs_hba *hba, > > - int lun, > > - enum unit_desc_param param_offset, > > - u8 *param_read_buf, > > - u32 param_size) > > +int ufshcd_read_unit_desc_param(struct ufs_hba *hba, > > + int lun, > > + enum unit_desc_param param_offset, > > + u8 *param_read_buf, > > + u32 param_size) > > { > > /* > > * Unit descriptors are only available for general purpose LUs (LUN > > id @@ -3322,6 +3322,7 @@ static inline int > ufshcd_read_unit_desc_param(struct ufs_hba *hba, > > return ufshcd_read_desc_param(hba, QUERY_DESC_IDN_UNIT, lun, > > param_offset, param_read_buf, param_size); > > } > > +EXPORT_SYMBOL_GPL(ufshcd_read_unit_desc_param); > > > > static int ufshcd_get_ref_clk_gating_wait(struct ufs_hba *hba) > > { > > @@ -5257,6 +5258,10 @@ static int ufshcd_wb_ctrl(struct ufs_hba *hba, > > bool enable) > > > > if (!(enable ^ hba->wb_enabled)) > > return 0; > > + > > + if (!ufshcd_wb_ctrl_vendor(hba, enable)) > > + return 0; > > + > > if (enable) > > opcode = UPIU_QUERY_OPCODE_SET_FLAG; > > else > > @@ -6610,6 +6615,8 @@ static int ufshcd_reset_and_restore(struct ufs_hba > *hba) > > int err = 0; > > int retries = MAX_HOST_RESET_RETRIES; > > > > + ufshcd_reset_vendor(hba); > > + > > do { > > /* Reset the attached device */ > > ufshcd_vops_device_reset(hba); > > @@ -6903,6 +6910,9 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, > u8 *desc_buf) > > if (!(dev_info->d_ext_ufs_feature_sup & UFS_DEV_WRITE_BOOSTER_SUP)) > > goto wb_disabled; > > > > + if (!ufshcd_wb_alloc_units_vendor(hba)) > > + return; > I didn't understand this check. Have you considered this - > ufshcd_is_wb_allowed(...). Ok. I will modify to using this function > > + > > /* > > * WB may be supported but not configured while provisioning. > > * The spec says, in dedicated wb buffer mode, @@ -8260,6 +8270,7 > > @@ static int ufshcd_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op) > > /* make sure that auto bkops is disabled */ > > ufshcd_disable_auto_bkops(hba); > > } > > + > Unnecessary new line, perhaps? I will remove new line. > > /* > > * If device needs to do BKOP or WB buffer flush during > > * Hibern8, keep device power mode as "active power mode" > > @@ -8273,6 +8284,8 @@ static int ufshcd_suspend(struct ufs_hba *hba, > enum ufs_pm_op pm_op) > > ufshcd_wb_need_flush(hba)); > > } > > > > + ufshcd_wb_toggle_flush_vendor(hba, pm_op); > > + > > if (req_dev_pwr_mode != hba->curr_dev_pwr_mode) { > > if ((ufshcd_is_runtime_pm(pm_op) && !hba->auto_bkops_enabled) > || > > !ufshcd_is_runtime_pm(pm_op)) { diff --git > > a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index > > 656c0691c858..deb9577e0eaa 100644 > > --- a/drivers/scsi/ufs/ufshcd.h > > +++ b/drivers/scsi/ufs/ufshcd.h > > @@ -254,6 +254,13 @@ struct ufs_pwr_mode_info { > > struct ufs_pa_layer_attr info; > > }; > > > > +struct ufs_wb_ops { > > + int (*wb_toggle_flush_vendor)(struct ufs_hba *hba, enum ufs_pm_op > pm_op); > > + int (*wb_alloc_units_vendor)(struct ufs_hba *hba); > > + int (*wb_ctrl_vendor)(struct ufs_hba *hba, bool enable); > > + int (*wb_reset_vendor)(struct ufs_hba *hba, bool force); }; > > + > > /** > > * struct ufs_hba_variant_ops - variant specific callbacks > > * @name: variant name > > @@ -752,6 +759,7 @@ struct ufs_hba { > > struct request_queue *bsg_queue; > > bool wb_buf_flush_enabled; > > bool wb_enabled; > > + struct ufs_wb_ops *wb_ops; > > struct delayed_work rpm_dev_flush_recheck_work; > > > > #ifdef CONFIG_SCSI_UFS_CRYPTO > > @@ -1004,6 +1012,10 @@ int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba, > > u8 *desc_buff, int *buff_len, > > enum query_opcode desc_op); > > > > +int ufshcd_read_unit_desc_param(struct ufs_hba *hba, > > + int lun, enum unit_desc_param param_offset, > > + u8 *param_read_buf, u32 param_size); > > + > > /* Wrapper functions for safely calling variant operations */ > > static inline const char *ufshcd_get_var_name(struct ufs_hba *hba) > > { > > @@ -1181,4 +1193,35 @@ static inline u8 ufshcd_scsi_to_upiu_lun(unsigned > int scsi_lun) > > int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len, > > const char *prefix); > > > > +static inline int ufshcd_wb_toggle_flush_vendor(struct ufs_hba *hba, > > +enum ufs_pm_op pm_op) { > > + if (!hba->wb_ops || !hba->wb_ops->wb_toggle_flush_vendor) > > + return -1; > > + > > + return hba->wb_ops->wb_toggle_flush_vendor(hba, pm_op); } > > + > > +static int ufshcd_wb_alloc_units_vendor(struct ufs_hba *hba) { > > + if (!hba->wb_ops || !hba->wb_ops->wb_alloc_units_vendor) > > + return -1; > > + > > + return hba->wb_ops->wb_alloc_units_vendor(hba); > > +} > > + > > +static int ufshcd_wb_ctrl_vendor(struct ufs_hba *hba, bool enable) { > > + if (!hba->wb_ops || !hba->wb_ops->wb_ctrl_vendor) > > + return -1; > > + > > + return hba->wb_ops->wb_ctrl_vendor(hba, enable); } > > + > > +static int ufshcd_reset_vendor(struct ufs_hba *hba) { > > + if (!hba->wb_ops || !hba->wb_ops->wb_reset_vendor) > > + return -1; > > + > > + return hba->wb_ops->wb_reset_vendor(hba, false); } > > #endif /* End of Header */ > > > > > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > Linux Foundation Collaborative Project
