From: Seungwon Jeon <ess...@gmail.com>
Some host controller needs nexus type information for handling
command. This change adds specific callback function to support
vendor's implementation.
Signed-off-by: Seungwon Jeon <ess...@gmail.com>
Signed-off-by: Alim Akhtar <alim.akh...@samsung.com>
---
drivers/scsi/ufs/ufshcd.c | 3 +++
drivers/scsi/ufs/ufshcd.h | 19 +++++++++++++++++++
2 files changed, 22 insertions(+)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index e8b96ec65987..eeb7835c52ab 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -1378,6 +1378,7 @@ 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_specify_nexus_t_xfer_req(hba, tag, lrbp);
ufshcd_send_command(hba, tag);
out_unlock:
spin_unlock_irqrestore(hba->host->host_lock, flags);
@@ -1578,6 +1579,7 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba,
hba->dev_cmd.complete = &wait;
spin_lock_irqsave(hba->host->host_lock, flags);
+ ufshcd_vops_specify_nexus_t_xfer_req(hba, tag, lrbp);
ufshcd_send_command(hba, tag);
spin_unlock_irqrestore(hba->host->host_lock, flags);
@@ -3842,6 +3844,7 @@ static int ufshcd_issue_tm_cmd(struct ufs_hba *hba, int
lun_id, int task_id,
task_req_upiup->input_param2 = cpu_to_be32(task_id);
/* send command to the controller */
+ ufshcd_vops_specify_nexus_t_tm_req(hba, free_slot, tm_function);
__set_bit(free_slot, &hba->outstanding_tasks);
ufshcd_writel(hba, 1 << free_slot, REG_UTP_TASK_REQ_DOOR_BELL);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 500e137bf68a..b3dd08420100 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -259,6 +259,9 @@ 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.
+ * @specify_nexus_t_xfer_req:
+ * @specify_nexus_t_tm_req: called before command is issued to allow vendor
+ * specific handling to be set for nexus type.
* @suspend: called during host controller PM callback
* @resume: called during host controller PM callback
* @dbg_register_dump: used to dump controller debug information
@@ -280,6 +283,9 @@ struct ufs_hba_variant_ops {
enum ufs_notify_change_status status,
struct ufs_pa_layer_attr *,
struct ufs_pa_layer_attr *);
+ void (*specify_nexus_t_xfer_req)(struct ufs_hba *,
+ int, struct scsi_cmnd *);
+ void (*specify_nexus_t_tm_req)(struct ufs_hba *, int, u8);
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);
@@ -811,4 +817,17 @@ static inline void ufshcd_vops_dbg_register_dump(struct
ufs_hba *hba)
hba->vops->dbg_register_dump(hba);
}
+static inline void ufshcd_vops_specify_nexus_t_xfer_req(struct ufs_hba *hba,
+ int tag, struct ufshcd_lrb *lrbp)
+{
+ if (hba->vops && hba->vops->specify_nexus_t_xfer_req)
+ hba->vops->specify_nexus_t_xfer_req(hba, tag, lrbp->cmd);
+}
+
+static inline void ufshcd_vops_specify_nexus_t_tm_req(struct ufs_hba *hba,
+ int free_slot, u8 tm_function)
+{
+ if (hba->vops && hba->vops->specify_nexus_t_tm_req)
+ hba->vops->specify_nexus_t_tm_req(hba, free_slot, tm_function);
+}
#endif /* End of Header */
--
1.7.10.4
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