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| author | Stanley Chu <stanley.chu@mediatek.com> | 2019-05-21 14:44:54 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-06-18 19:46:23 -0400 |
| commit | 821744403913d957cb52263b2016fd5bd29c30d0 (patch) | |
| tree | 3fb06aed8c4be4f97fd5500e2836225edeed4123 /drivers/scsi/ufs/ufshci.h | |
| parent | f571b377ded7466e175e73c116df9ae09527dcb0 (diff) | |
| download | lwn-821744403913d957cb52263b2016fd5bd29c30d0.tar.gz lwn-821744403913d957cb52263b2016fd5bd29c30d0.zip | |
scsi: ufs: Add error-handling of Auto-Hibernate
Currently auto-hibernate is activated if host supports auto-hibern8
capability. However error-handling is not implemented, which makes the
feature somewhat risky.
If either "Hibernate Enter" or "Hibernate Exit" fail during auto-hibernate
flow, the corresponding interrupt "UIC_HIBERNATE_ENTER" or
"UIC_HIBERNATE_EXIT" shall be raised according to UFS specification.
This patch adds auto-hibernate error-handling:
- Monitor "Hibernate Enter" and "Hibernate Exit" interrupts after
auto-hibernate feature is activated.
- If a failure happens, trigger error-handling just like
"manual-hibernate" failure and apply the same recovery flow: schedule
UFS error handler in ufshcd_check_errors(), and then do host reset and
restore in UFS error handler.
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshci.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshci.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h index 6fa889de5ee5..dbb75cd28dc8 100644 --- a/drivers/scsi/ufs/ufshci.h +++ b/drivers/scsi/ufs/ufshci.h @@ -144,8 +144,10 @@ enum { #define CONTROLLER_FATAL_ERROR 0x10000 #define SYSTEM_BUS_FATAL_ERROR 0x20000 -#define UFSHCD_UIC_PWR_MASK (UIC_HIBERNATE_ENTER |\ - UIC_HIBERNATE_EXIT |\ +#define UFSHCD_UIC_HIBERN8_MASK (UIC_HIBERNATE_ENTER |\ + UIC_HIBERNATE_EXIT) + +#define UFSHCD_UIC_PWR_MASK (UFSHCD_UIC_HIBERN8_MASK |\ UIC_POWER_MODE) #define UFSHCD_UIC_MASK (UIC_COMMAND_COMPL | UFSHCD_UIC_PWR_MASK) |