[Mesa-dev] [PATCH 2/2] radeonsi: Enable loading into CE RAM.

[Bas Nieuwenhuizen]

We need to enable a bit in the CONTEXT_CONTROL packet for the
loads to work.

Signed-off-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
---
 src/gallium/drivers/radeonsi/si_descriptors.c | 6 ++++++
 src/gallium/drivers/radeonsi/si_hw_context.c  | 5 +++++
 src/gallium/drivers/radeonsi/si_state.h       | 1 +
 3 files changed, 12 insertions(+)

diff --git a/src/gallium/drivers/radeonsi/si_descriptors.c b/src/gallium/drivers/radeonsi/si_descriptors.c
index 1580e61..30e65a9 100644
--- a/src/gallium/drivers/radeonsi/si_descriptors.c
+++ b/src/gallium/drivers/radeonsi/si_descriptors.c
@@ -185,6 +185,12 @@ static void si_reinitialize_ce_ram(struct si_context *sctx,
 	desc->ce_ram_dirty = false;
 }
 
+void si_ce_enable_loads(struct radeon_winsys_cs *ib) {
+	radeon_emit(ib, PKT3(PKT3_CONTEXT_CONTROL, 1, 0));
+	radeon_emit(ib, LOAD_CONTROL_UPDATE(1) | LOAD_CONTROL_CE_RAM_EN(1));
+	radeon_emit(ib, SHADOW_ENABLE_UPDATE(1));
+}
+
 static bool si_upload_descriptors(struct si_context *sctx,
 				  struct si_descriptors *desc,
 				  struct r600_atom * atom)
diff --git a/src/gallium/drivers/radeonsi/si_hw_context.c b/src/gallium/drivers/radeonsi/si_hw_context.c
index e3abb7f..e6018f3 100644
--- a/src/gallium/drivers/radeonsi/si_hw_context.c
+++ b/src/gallium/drivers/radeonsi/si_hw_context.c
@@ -202,6 +202,11 @@ void si_begin_new_cs(struct si_context *ctx)
 	if (ctx->init_config_gs_rings)
 		si_pm4_emit(ctx, ctx->init_config_gs_rings);
 
+	if (ctx->ce_preamble_ib)
+		si_ce_enable_loads(ctx->ce_preamble_ib);
+	else if (ctx->ce_ib)
+		si_ce_enable_loads(ctx->ce_ib);
+
 	ctx->framebuffer.dirty_cbufs = (1 << 8) - 1;
 	ctx->framebuffer.dirty_zsbuf = true;
 	si_mark_atom_dirty(ctx, &ctx->framebuffer.atom);
diff --git a/src/gallium/drivers/radeonsi/si_state.h b/src/gallium/drivers/radeonsi/si_state.h
index c4b2b45..cbe91dd 100644
--- a/src/gallium/drivers/radeonsi/si_state.h
+++ b/src/gallium/drivers/radeonsi/si_state.h
@@ -251,6 +251,7 @@ struct si_buffer_resources {
 	} while(0)
 
 /* si_descriptors.c */
+void si_ce_enable_loads(struct radeon_winsys_cs *ib);
 void si_set_ring_buffer(struct pipe_context *ctx, uint shader, uint slot,
 			struct pipe_resource *buffer,
 			unsigned stride, unsigned num_records,
-- 
2.8.0