diff options
| author | Dolev Raviv <draviv@codeaurora.org> | 2013-07-30 00:35:58 +0530 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-08-26 12:51:25 +0400 |
| commit | 68078d5cc1a59b2ddfc6982c67308f20f991426a (patch) | |
| tree | 9fe1fee824c92ff6eacfcb0ebc9f1f39e683966d /drivers/scsi/ufs/ufshcd.h | |
| parent | 5a0b0cb9bee767ef10ff9ce2fb4141af06416288 (diff) | |
[SCSI] ufs: Set fDeviceInit flag to initiate device initialization
Allow UFS device to complete its initialization and accept
SCSI commands by setting fDeviceInit flag. The device may take
time for this operation and hence the host should poll until
fDeviceInit flag is toggled to zero. This step is mandated by
UFS device specification for device initialization completion.
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index c750a90eb9da..6d6fdeb81af8 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -70,6 +70,7 @@ enum dev_cmd_type { DEV_CMD_TYPE_NOP = 0x0, + DEV_CMD_TYPE_QUERY = 0x1, }; /** @@ -125,6 +126,18 @@ struct ufshcd_lrb { }; /** + * struct ufs_query - holds relevent data structures for query request + * @request: request upiu and function + * @descriptor: buffer for sending/receiving descriptor + * @response: response upiu and response + */ +struct ufs_query { + struct ufs_query_req request; + u8 *descriptor; + struct ufs_query_res response; +}; + +/** * struct ufs_dev_cmd - all assosiated fields with device management commands * @type: device management command type - Query, NOP OUT * @lock: lock to allow one command at a time @@ -136,6 +149,7 @@ struct ufs_dev_cmd { struct mutex lock; struct completion *complete; wait_queue_head_t tag_wq; + struct ufs_query query; }; /** @@ -233,4 +247,10 @@ static inline void ufshcd_hba_stop(struct ufs_hba *hba) ufshcd_writel(hba, CONTROLLER_DISABLE, REG_CONTROLLER_ENABLE); } +static inline void check_upiu_size(void) +{ + BUILD_BUG_ON(ALIGNED_UPIU_SIZE < + GENERAL_UPIU_REQUEST_SIZE + QUERY_DESC_MAX_SIZE); +} + #endif /* End of Header */ |