+static void si_add_gds_to_buffer_list(struct si_context *sctx)
+{
+ if (sctx->gds) {
+ sctx->ws->cs_add_buffer(sctx->gfx_cs, sctx->gds,
+ RADEON_USAGE_READWRITE, 0, 0);
+ if (sctx->gds_oa) {
+ sctx->ws->cs_add_buffer(sctx->gfx_cs, sctx->gds_oa,
+ RADEON_USAGE_READWRITE, 0, 0);
+ }
+ }
+}
+
+void si_allocate_gds(struct si_context *sctx)
+{
+ struct radeon_winsys *ws = sctx->ws;
+
+ if (sctx->gds)
+ return;
+
+ assert(sctx->screen->use_ngg_streamout);
+
+ /* 4 streamout GDS counters.
+ * We need 256B (64 dw) of GDS, otherwise streamout hangs.
+ */
+ sctx->gds = ws->buffer_create(ws, 256, 4, RADEON_DOMAIN_GDS, 0);
+ sctx->gds_oa = ws->buffer_create(ws, 4, 1, RADEON_DOMAIN_OA, 0);
+
+ assert(sctx->gds && sctx->gds_oa);
+ si_add_gds_to_buffer_list(sctx);
+}
+