diff mbox series

[v7,1/2] ufs: introduce a callback to get info of command completion

Message ID 49632a6a0c4e2c65d453b7234644e02c327b7f91.1599284713.git.kwmad.kim@samsung.com
State New
Headers show
Series ufs: exynos: introduce the way to get cmd info | expand

Commit Message

Kiwoong Kim Sept. 5, 2020, 5:47 a.m. UTC 
Some SoC specific might need command history for
various reasons, such as stacking command contexts
in system memory to check for debugging in the future
or scaling some DVFS knobs to boost IO throughput.

What you would do with the information could be
variant per SoC vendor.

Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Acked-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
---
 drivers/scsi/ufs/ufshcd.c | 1 +
 drivers/scsi/ufs/ufshcd.h | 8 ++++++++
 2 files changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 06e2439..64bd59c 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -4923,6 +4923,7 @@  static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
 		lrbp = &hba->lrb[index];
 		lrbp->compl_time_stamp = ktime_get();
 		cmd = lrbp->cmd;
+		ufshcd_vops_compl_xfer_req(hba, index, (cmd) ? true : false);
 		if (cmd) {
 			ufshcd_add_command_trace(hba, index, "complete");
 			result = ufshcd_transfer_rsp_status(hba, lrbp);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 618b253..02bd405 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -307,6 +307,7 @@  struct ufs_hba_variant_ops {
 					struct ufs_pa_layer_attr *,
 					struct ufs_pa_layer_attr *);
 	void	(*setup_xfer_req)(struct ufs_hba *, int, bool);
+	void	(*compl_xfer_req)(struct ufs_hba *hba, int tag, bool is_scsi);
 	void	(*setup_task_mgmt)(struct ufs_hba *, int, u8);
 	void    (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme,
 					enum ufs_notify_change_status);
@@ -1111,6 +1112,13 @@  static inline void ufshcd_vops_setup_xfer_req(struct ufs_hba *hba, int tag,
 		return hba->vops->setup_xfer_req(hba, tag, is_scsi_cmd);
 }
 
+static inline void ufshcd_vops_compl_xfer_req(struct ufs_hba *hba,
+					      int tag, bool is_scsi)
+{
+	if (hba->vops && hba->vops->compl_xfer_req)
+		hba->vops->compl_xfer_req(hba, tag, is_scsi);
+}
+
 static inline void ufshcd_vops_setup_task_mgmt(struct ufs_hba *hba,
 					int tag, u8 tm_function)
 {