[Mesa-dev] [PATCH] radeonsi: don't set DATA_FORMAT if ADD_TID_ENABLE is set on VI

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

This can cause incorrect address calculations and hangs.

Cc: mesa-stable at lists.freedesktop.org
---
 src/gallium/drivers/radeonsi/si_descriptors.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/radeonsi/si_descriptors.c b/src/gallium/drivers/radeonsi/si_descriptors.c
index b07ab3b..0ced6c3 100644
--- a/src/gallium/drivers/radeonsi/si_descriptors.c
+++ b/src/gallium/drivers/radeonsi/si_descriptors.c
@@ -619,11 +619,14 @@ void si_set_ring_buffer(struct pipe_context *ctx, uint shader, uint slot,
 			  S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z) |
 			  S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W) |
 			  S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT) |
-			  S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32) |
 			  S_008F0C_ELEMENT_SIZE(element_size) |
 			  S_008F0C_INDEX_STRIDE(index_stride) |
 			  S_008F0C_ADD_TID_ENABLE(add_tid);
 
+		/* If ADD_TID_ENABLE is set, DATA_FORMAT specifies STRIDE bits [14:17] */
+		if (sctx->b.chip_class >= VI && !add_tid)
+			desc[3] |= S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32);
+
 		pipe_resource_reference(&buffers->buffers[slot], buffer);
 		radeon_add_to_buffer_list(&sctx->b, &sctx->b.rings.gfx,
 				      (struct r600_resource*)buffer,
-- 
2.1.4