drm/xe: Add exec queue active vfunc

If an exec queue is inactive (e.g., not registered or scheduling is
disabled), TLB invalidations are not issued for that queue. Add a
virtual function to determine the active state, which TLB invalidation
logic can hook into.

v5:
 - Operate on primary in active function

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Tested-by: Stuart Summers <stuart.summers@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://patch.msgid.link/20260116221731.868657-11-matthew.brost@intel.com

drivers/gpu/drm/xe/xe_exec_queue_types.h

@@ -300,6 +300,8 @@ struct xe_exec_queue_ops {
 	void (*resume)(struct xe_exec_queue *q);
 	/** @reset_status: check exec queue reset status */
 	bool (*reset_status)(struct xe_exec_queue *q);
+	/** @active: check exec queue is active */
+	bool (*active)(struct xe_exec_queue *q);
 };
 
 #endif

drivers/gpu/drm/xe/xe_execlist.c

@@ -468,6 +468,12 @@ static bool execlist_exec_queue_reset_status(struct xe_exec_queue *q)
 	return false;
 }
 
+static bool execlist_exec_queue_active(struct xe_exec_queue *q)
+{
+	/* NIY */
+	return false;
+}
+
 static const struct xe_exec_queue_ops execlist_exec_queue_ops = {
 	.init = execlist_exec_queue_init,
 	.kill = execlist_exec_queue_kill,
@@ -480,6 +486,7 @@ static const struct xe_exec_queue_ops execlist_exec_queue_ops = {
 	.suspend_wait = execlist_exec_queue_suspend_wait,
 	.resume = execlist_exec_queue_resume,
 	.reset_status = execlist_exec_queue_reset_status,
+	.active = execlist_exec_queue_active,
 };
 
 int xe_execlist_init(struct xe_gt *gt)

drivers/gpu/drm/xe/xe_guc_submit.c

@@ -2276,6 +2276,14 @@ static bool guc_exec_queue_reset_status(struct xe_exec_queue *q)
 	return exec_queue_reset(q) || exec_queue_killed_or_banned_or_wedged(q);
 }
 
+static bool guc_exec_queue_active(struct xe_exec_queue *q)
+{
+	struct xe_exec_queue *primary = xe_exec_queue_multi_queue_primary(q);
+
+	return exec_queue_enabled(primary) &&
+		!exec_queue_pending_disable(primary);
+}
+
 /*
  * All of these functions are an abstraction layer which other parts of Xe can
  * use to trap into the GuC backend. All of these functions, aside from init,
@@ -2295,6 +2303,7 @@ static const struct xe_exec_queue_ops guc_exec_queue_ops = {
 	.suspend_wait = guc_exec_queue_suspend_wait,
 	.resume = guc_exec_queue_resume,
 	.reset_status = guc_exec_queue_reset_status,
+	.active = guc_exec_queue_active,
 };
 
 static void guc_exec_queue_stop(struct xe_guc *guc, struct xe_exec_queue *q)