[PATCH 13/15] drm/xe: Set slpc freq to max on ULLS jobs

[Matthew Brost]

ULLS jobs should run as fast as possible, as such, increase SLPC
frequency on the ULLS queue to the maximum.

Signed-off-by: Matthew Brost <matthew.brost at intel.com>
---
 drivers/gpu/drm/xe/xe_guc_submit.c | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_guc_submit.c b/drivers/gpu/drm/xe/xe_guc_submit.c
index f67dfdb69637..41ac0b41b09b 100644
--- a/drivers/gpu/drm/xe/xe_guc_submit.c
+++ b/drivers/gpu/drm/xe/xe_guc_submit.c
@@ -451,6 +451,23 @@ static void init_policies(struct xe_guc *guc, struct xe_exec_queue *q)
 		       __guc_exec_queue_policy_action_size(&policy), 0, 0);
 }
 
+static void set_slpc_freq(struct xe_guc *guc, struct xe_exec_queue *q,
+			  bool high_freq)
+{
+	struct exec_queue_policy policy;
+	u32 slpc_exec_queue_freq_req = 0;
+
+	if (high_freq)
+		slpc_exec_queue_freq_req |= SLPC_CTX_FREQ_REQ_IS_COMPUTE;
+
+	__guc_exec_queue_policy_start_klv(&policy, q->guc->id);
+	__guc_exec_queue_policy_add_slpc_exec_queue_freq_req(&policy,
+							     slpc_exec_queue_freq_req);
+
+	xe_guc_ct_send(&guc->ct, (u32 *)&policy.h2g,
+		       __guc_exec_queue_policy_action_size(&policy), 0, 0);
+}
+
 static void set_min_preemption_timeout(struct xe_guc *guc, struct xe_exec_queue *q)
 {
 	struct exec_queue_policy policy;
@@ -718,9 +735,14 @@ static void submit_exec_queue(struct xe_sched_job *job, struct xe_exec_queue *q)
 		return;
 
 	if (job->is_ulls) {
-		if (!job->is_ulls_first)
+		if (job->is_ulls_first)
+			set_slpc_freq(guc, q, true);
+		else
 			xe_hw_engine_write_ring_tail(q->hwe, lrc->ring.tail);
 
+		if (job->is_ulls_last)
+			set_slpc_freq(guc, q, false);
+
 		xe_lrc_set_ulls_semaphore(lrc, xe_sched_job_lrc_seqno(job));
 	}
 
-- 
2.34.1