From: Alex Deucher <alexander.deuc...@amd.com>
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=50655
https://bugs.freedesktop.org/show_bug.cgi?id=47116
v2: flush along with workaround.
v3: just need a flush
v4: try WAIT_UNTIL
v5: switch to PS partial flush
v6: rework patch
Note: this is a candidate for the 9.1 branch.
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
src/gallium/drivers/r600/r600_state_common.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/src/gallium/drivers/r600/r600_state_common.c
b/src/gallium/drivers/r600/r600_state_common.c
index c4bd758..1654233 100644
--- a/src/gallium/drivers/r600/r600_state_common.c
+++ b/src/gallium/drivers/r600/r600_state_common.c
@@ -1360,6 +1360,12 @@ static void r600_draw_vbo(struct pipe_context *ctx,
const struct pipe_draw_info
rctx->vgt_state.atom.dirty = true;
}
+ /* Workaround for hardware deadlock on certain R600 ASICs: write into a
CB register. */
+ if (rctx->chip_class == R600) {
+ rctx->flags |= R600_CONTEXT_PS_PARTIAL_FLUSH;
+ rctx->cb_misc_state.atom.dirty = true;
+ }
+
/* Emit states. */
r600_need_cs_space(rctx, ib.user_buffer ? 5 : 0, TRUE);
r600_flush_emit(rctx);
--
1.7.7.5
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