[PATCH v17 6/7] drm/xe/guc: Add dss conversion from group/instance ID

[Zhanjun Dong <zhanjun.dong@intel.com>]

Add dss conversion from group/instance ID.

Signed-off-by: Zhanjun Dong <zhanjun.dong@intel.com>
Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com>
---
 drivers/gpu/drm/xe/xe_gt_mcr.c | 13 +++++++++++++
 drivers/gpu/drm/xe/xe_gt_mcr.h |  1 +
 2 files changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_gt_mcr.c b/drivers/gpu/drm/xe/xe_gt_mcr.c
index 7d7bd0be6233..5deef7ee7925 100644
--- a/drivers/gpu/drm/xe/xe_gt_mcr.c
+++ b/drivers/gpu/drm/xe/xe_gt_mcr.c
@@ -352,6 +352,19 @@ void xe_gt_mcr_get_dss_steering(struct xe_gt *gt, unsigned int dss, u16 *group,
 	*instance = dss % gt->steering_dss_per_grp;
 }
 
+/**
+ * xe_gt_mcr_steering_info_to_dss_id - Get DSS ID from group/instance steering
+ * @gt: GT structure
+ * @group: steering group ID
+ * @instance: steering instance ID
+ *
+ * Return: the coverted DSS id.
+ */
+u32 xe_gt_mcr_steering_info_to_dss_id(struct xe_gt *gt, u16 group, u16 instance)
+{
+	return group * dss_per_group(gt) + instance;
+}
+
 static void init_steering_dss(struct xe_gt *gt)
 {
 	gt->steering_dss_per_grp = dss_per_group(gt);
diff --git a/drivers/gpu/drm/xe/xe_gt_mcr.h b/drivers/gpu/drm/xe/xe_gt_mcr.h
index 8d119a0d5493..c0cd36021c24 100644
--- a/drivers/gpu/drm/xe/xe_gt_mcr.h
+++ b/drivers/gpu/drm/xe/xe_gt_mcr.h
@@ -28,6 +28,7 @@ void xe_gt_mcr_multicast_write(struct xe_gt *gt, struct xe_reg_mcr mcr_reg,
 
 void xe_gt_mcr_steering_dump(struct xe_gt *gt, struct drm_printer *p);
 void xe_gt_mcr_get_dss_steering(struct xe_gt *gt, unsigned int dss, u16 *group, u16 *instance);
+u32 xe_gt_mcr_steering_info_to_dss_id(struct xe_gt *gt, u16 group, u16 instance);
 
 /*
  * Loop over each DSS and determine the group and instance IDs that
-- 
2.34.1