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| author | Adrian Hunter <adrian.hunter@intel.com> | 2021-02-09 08:24:36 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-03-04 17:36:58 -0500 |
| commit | cd4694756188dcca0f631e60da26053be1ffdc91 (patch) | |
| tree | acb67fa63ff2cd6fd946d12c68c7a0aa6c041ffc /drivers/scsi/ufs/ufshcd.h | |
| parent | 37b97b18704f77f711e7a2c532fcad00268ac025 (diff) | |
| download | lwn-cd4694756188dcca0f631e60da26053be1ffdc91.tar.gz lwn-cd4694756188dcca0f631e60da26053be1ffdc91.zip | |
scsi: ufs: ufs-debugfs: Add user-defined exception_event_mask
Allow users to enable specific exception events via debugfs.
The bits enabled by the driver ee_drv_ctrl are separated from the bits
enabled by the user ee_usr_ctrl. The control mask ee_mask_ctrl is the
logical-or of those two. A mutex is needed to ensure that the masks match
what was written to the device.
Link: https://lore.kernel.org/r/20210209062437.6954-4-adrian.hunter@intel.com
Acked-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 18e56c1c1b30..9011a6dee16e 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -773,7 +773,10 @@ struct ufs_hba { u32 ufshcd_state; u32 eh_flags; u32 intr_mask; - u16 ee_ctrl_mask; + u16 ee_ctrl_mask; /* Exception event mask */ + u16 ee_drv_mask; /* Exception event mask for driver */ + u16 ee_usr_mask; /* Exception event mask for user (via debugfs) */ + struct mutex ee_ctrl_mutex; bool is_powered; bool shutting_down; struct semaphore host_sem; @@ -1285,4 +1288,21 @@ 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); +int ufshcd_update_ee_control(struct ufs_hba *hba, u16 *mask, u16 *other_mask, + u16 set, u16 clr); + +static inline int ufshcd_update_ee_drv_mask(struct ufs_hba *hba, + u16 set, u16 clr) +{ + return ufshcd_update_ee_control(hba, &hba->ee_drv_mask, + &hba->ee_usr_mask, set, clr); +} + +static inline int ufshcd_update_ee_usr_mask(struct ufs_hba *hba, + u16 set, u16 clr) +{ + return ufshcd_update_ee_control(hba, &hba->ee_usr_mask, + &hba->ee_drv_mask, set, clr); +} + #endif /* End of Header */ |