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Commit 0e675efa authored by Kiwoong Kim's avatar Kiwoong Kim Committed by Martin K. Petersen
Browse files

scsi: ufs: introduce setup_xfer_req callback 



Some UFS host controller may need to configure some things before any
transfer request is issued.

Signed-off-by: default avatarKiwoong Kim <kwmad.kim@samsung.com>
Reviewed-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent bc2bb154

drivers/scsi/ufs/ufshcd.c

+2 −0
Original line number Diff line number Diff line
@@ -1516,6 +1516,7 @@ static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) 


	/* issue command to the controller */

	spin_lock_irqsave(hba->host->host_lock, flags);

	ufshcd_vops_setup_xfer_req(hba, tag, (lrbp->cmd ? true : false));

	ufshcd_send_command(hba, tag);

out_unlock:

	spin_unlock_irqrestore(hba->host->host_lock, flags);
@@ -1727,6 +1728,7 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba, 
	/* Make sure descriptors are ready before ringing the doorbell */

	wmb();

	spin_lock_irqsave(hba->host->host_lock, flags);

	ufshcd_vops_setup_xfer_req(hba, tag, (lrbp->cmd ? true : false));

	ufshcd_send_command(hba, tag);

	spin_unlock_irqrestore(hba->host->host_lock, flags);

drivers/scsi/ufs/ufshcd.h

+10 −0
Original line number Diff line number Diff line
@@ -261,6 +261,8 @@ struct ufs_pwr_mode_info { 
 * @pwr_change_notify: called before and after a power mode change

 *			is carried out to allow vendor spesific capabilities

 *			to be set.

 * @setup_xfer_req: called before any transfer request is issued

 *                  to set some things

 * @suspend: called during host controller PM callback

 * @resume: called during host controller PM callback

 * @dbg_register_dump: used to dump controller debug information
@@ -284,6 +286,7 @@ struct ufs_hba_variant_ops { 
					enum ufs_notify_change_status status,

					struct ufs_pa_layer_attr *,

					struct ufs_pa_layer_attr *);

	void	(*setup_xfer_req)(struct ufs_hba *, int, bool);

	int     (*suspend)(struct ufs_hba *, enum ufs_pm_op);

	int     (*resume)(struct ufs_hba *, enum ufs_pm_op);

	void	(*dbg_register_dump)(struct ufs_hba *hba);
@@ -801,6 +804,13 @@ static inline int ufshcd_vops_pwr_change_notify(struct ufs_hba *hba, 
	return -ENOTSUPP;

}



static inline void ufshcd_vops_setup_xfer_req(struct ufs_hba *hba, int tag,

					bool is_scsi_cmd)

{

	if (hba->vops && hba->vops->setup_xfer_req)

		return hba->vops->setup_xfer_req(hba, tag, is_scsi_cmd);

}



static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op)

{

	if (hba->vops && hba->vops->suspend)