[PATCH 3/7] drm/xe/oa: Add input fence dependencies

[Ashutosh Dixit]

Add input fence dependencies which will make OA configuration wait till
these dependencies are met (till input fences signal).

v2: Change add_deps arg to xe_oa_submit_bb from bool to enum (Matt Brost)

Reviewed-by: Jonathan Cavitt <jonathan.cavitt at intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit at intel.com>
---
 drivers/gpu/drm/xe/xe_oa.c | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_oa.c b/drivers/gpu/drm/xe/xe_oa.c
index bf63bbc9428f2..cad8f54500a10 100644
--- a/drivers/gpu/drm/xe/xe_oa.c
+++ b/drivers/gpu/drm/xe/xe_oa.c
@@ -42,6 +42,11 @@
 #define DEFAULT_POLL_PERIOD_NS (NSEC_PER_SEC / DEFAULT_POLL_FREQUENCY_HZ)
 #define XE_OA_UNIT_INVALID U32_MAX
 
+enum xe_oa_submit_deps {
+	XE_OA_SUBMIT_NO_DEPS,
+	XE_OA_SUBMIT_ADD_DEPS,
+};
+
 struct xe_oa_reg {
 	struct xe_reg addr;
 	u32 value;
@@ -568,7 +573,8 @@ static __poll_t xe_oa_poll(struct file *file, poll_table *wait)
 	return ret;
 }
 
-static struct dma_fence *xe_oa_submit_bb(struct xe_oa_stream *stream, struct xe_bb *bb)
+static struct dma_fence *xe_oa_submit_bb(struct xe_oa_stream *stream, enum xe_oa_submit_deps deps,
+					 struct xe_bb *bb)
 {
 	struct xe_sched_job *job;
 	struct dma_fence *fence;
@@ -581,11 +587,22 @@ static struct dma_fence *xe_oa_submit_bb(struct xe_oa_stream *stream, struct xe_
 		goto exit;
 	}
 
+	if (deps == XE_OA_SUBMIT_ADD_DEPS) {
+		for (int i = 0; i < stream->num_syncs && !err; i++)
+			err = xe_sync_entry_add_deps(&stream->syncs[i], job);
+		if (err) {
+			drm_dbg(&stream->oa->xe->drm, "xe_sync_entry_add_deps err %d\n", err);
+			goto err_put_job;
+		}
+	}
+
 	xe_sched_job_arm(job);
 	fence = dma_fence_get(&job->drm.s_fence->finished);
 	xe_sched_job_push(job);
 
 	return fence;
+err_put_job:
+	xe_sched_job_put(job);
 exit:
 	return ERR_PTR(err);
 }
@@ -663,7 +680,7 @@ static int xe_oa_modify_ctx_image(struct xe_oa_stream *stream, struct xe_lrc *lr
 
 	xe_oa_store_flex(stream, lrc, bb, flex, count);
 
-	fence = xe_oa_submit_bb(stream, bb);
+	fence = xe_oa_submit_bb(stream, XE_OA_SUBMIT_NO_DEPS, bb);
 	if (IS_ERR(fence)) {
 		err = PTR_ERR(fence);
 		goto free_bb;
@@ -692,7 +709,7 @@ static int xe_oa_load_with_lri(struct xe_oa_stream *stream, struct xe_oa_reg *re
 
 	write_cs_mi_lri(bb, reg_lri, 1);
 
-	fence = xe_oa_submit_bb(stream, bb);
+	fence = xe_oa_submit_bb(stream, XE_OA_SUBMIT_NO_DEPS, bb);
 	if (IS_ERR(fence)) {
 		err = PTR_ERR(fence);
 		goto free_bb;
@@ -943,7 +960,7 @@ static int xe_oa_emit_oa_config(struct xe_oa_stream *stream, struct xe_oa_config
 		goto exit;
 	}
 
-	fence = xe_oa_submit_bb(stream, oa_bo->bb);
+	fence = xe_oa_submit_bb(stream, XE_OA_SUBMIT_ADD_DEPS, oa_bo->bb);
 	if (IS_ERR(fence)) {
 		err = PTR_ERR(fence);
 		goto exit;
-- 
2.41.0