diff options
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 49590ee07acc..c750a90eb9da 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -68,6 +68,10 @@ #define UFSHCD "ufshcd" #define UFSHCD_DRIVER_VERSION "0.2" +enum dev_cmd_type { + DEV_CMD_TYPE_NOP = 0x0, +}; + /** * struct uic_command - UIC command structure * @command: UIC command @@ -91,7 +95,7 @@ struct uic_command { /** * struct ufshcd_lrb - local reference block * @utr_descriptor_ptr: UTRD address of the command - * @ucd_cmd_ptr: UCD address of the command + * @ucd_req_ptr: UCD address of the command * @ucd_rsp_ptr: Response UPIU address for this command * @ucd_prdt_ptr: PRDT address of the command * @cmd: pointer to SCSI command @@ -101,10 +105,11 @@ struct uic_command { * @command_type: SCSI, UFS, Query. * @task_tag: Task tag of the command * @lun: LUN of the command + * @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation) */ struct ufshcd_lrb { struct utp_transfer_req_desc *utr_descriptor_ptr; - struct utp_upiu_cmd *ucd_cmd_ptr; + struct utp_upiu_req *ucd_req_ptr; struct utp_upiu_rsp *ucd_rsp_ptr; struct ufshcd_sg_entry *ucd_prdt_ptr; @@ -116,8 +121,22 @@ struct ufshcd_lrb { int command_type; int task_tag; unsigned int lun; + bool intr_cmd; }; +/** + * 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 + * @complete: internal commands completion + * @tag_wq: wait queue until free command slot is available + */ +struct ufs_dev_cmd { + enum dev_cmd_type type; + struct mutex lock; + struct completion *complete; + wait_queue_head_t tag_wq; +}; /** * struct ufs_hba - per adapter private structure @@ -131,6 +150,7 @@ struct ufshcd_lrb { * @host: Scsi_Host instance of the driver * @dev: device handle * @lrb: local reference block + * @lrb_in_use: lrb in use * @outstanding_tasks: Bits representing outstanding task requests * @outstanding_reqs: Bits representing outstanding transfer requests * @capabilities: UFS Controller Capabilities @@ -146,6 +166,7 @@ struct ufshcd_lrb { * @intr_mask: Interrupt Mask Bits * @feh_workq: Work queue for fatal controller error handling * @errors: HBA errors + * @dev_cmd: ufs device management command information */ struct ufs_hba { void __iomem *mmio_base; @@ -164,6 +185,7 @@ struct ufs_hba { struct device *dev; struct ufshcd_lrb *lrb; + unsigned long lrb_in_use; unsigned long outstanding_tasks; unsigned long outstanding_reqs; @@ -188,6 +210,9 @@ struct ufs_hba { /* HBA Errors */ u32 errors; + + /* Device management request data */ + struct ufs_dev_cmd dev_cmd; }; #define ufshcd_writel(hba, val, reg) \ |