Mesa (master): etnaviv: generalize FE stall before loading shader and sampler states
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Tue May 12 14:41:37 UTC 2020
Module: Mesa
Branch: master
Commit: dc6c42dc77e4bf0cb07037e038c4a50afa5a8143
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=dc6c42dc77e4bf0cb07037e038c4a50afa5a8143
Author: Lucas Stach <l.stach at pengutronix.de>
Date: Thu Feb 6 17:11:03 2020 +0100
etnaviv: generalize FE stall before loading shader and sampler states
It seems that some of the new shader and sampler states added with
Halti0 are not self-synchronizing anymore. Make sure to stall the FE
before loading those new states to avoid corruption of the in-flight
draw state.
Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
Reviewed-by: Jonathan Marek <jonathan at marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3963>
---
src/gallium/drivers/etnaviv/etnaviv_emit.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/src/gallium/drivers/etnaviv/etnaviv_emit.c b/src/gallium/drivers/etnaviv/etnaviv_emit.c
index cb55b2eb497..de36aeb7f9b 100644
--- a/src/gallium/drivers/etnaviv/etnaviv_emit.c
+++ b/src/gallium/drivers/etnaviv/etnaviv_emit.c
@@ -534,18 +534,18 @@ etna_emit_state(struct etna_context *ctx)
else
emit_pre_halti5_state(ctx);
- ctx->emit_texture_state(ctx);
-
- /* Insert a FE/PE stall as changing the shader instructions (and maybe
- * the uniforms) can corrupt the previous in-progress draw operation.
- * Observed with amoeba on GC2000 during the right-to-left rendering
- * of PI, and can cause GPU hangs immediately after.
- * I summise that this is because the "new" locations at 0xc000 are not
- * properly protected against updates as other states seem to be. Hence,
- * we detect the "new" vertex shader instruction offset to apply this. */
- if (ctx->dirty & (ETNA_DIRTY_SHADER | ETNA_DIRTY_CONSTBUF) && screen->specs.vs_offset > 0x4000)
+ /* Beginning from Halti0 some of the new shader and sampler states are not
+ * self-synchronizing anymore. Thus we need to stall the FE on PE completion
+ * before loading the new states to avoid corrupting the state of the
+ * in-flight draw.
+ */
+ if (screen->specs.halti >= 0 &&
+ (ctx->dirty & (ETNA_DIRTY_SHADER | ETNA_DIRTY_CONSTBUF |
+ ETNA_DIRTY_SAMPLERS | ETNA_DIRTY_SAMPLER_VIEWS)))
etna_stall(ctx->stream, SYNC_RECIPIENT_FE, SYNC_RECIPIENT_PE);
+ ctx->emit_texture_state(ctx);
+
/* We need to update the uniform cache only if one of the following bits are
* set in ctx->dirty:
* - ETNA_DIRTY_SHADER
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