diff options
| author | Kiwoong Kim <kwmad.kim@samsung.com> | 2016-11-10 15:14:36 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-11-12 18:34:16 +0300 |
| commit | 0e675efa9e9edef113bb55b25d1f22b1ae8225f4 (patch) | |
| tree | c823a321da99c59c300f3eb43e53801fb71db920 | |
| parent | bc2bb1543e62a5d0ae51ccdfde697dc97957f2a1 (diff) | |
| download | linux-0e675efa9e9edef113bb55b25d1f22b1ae8225f4.tar.xz | |
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: Kiwoong Kim <kwmad.kim@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 10 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 9ca041b131e9..5d83f55edbde 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -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); diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index afff7f4de81b..e935fd1b6b3a 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -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) |