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radeonsi/gfx9: use correct TC flush flags when invalidating CB & DB

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Now we can finally stop flushing L2 data.

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák
2017-08-19 00:34:12 +02:00
parent 759526813b
commit 287b0a28f4
1 changed files with 21 additions and 7 deletions
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28
src/gallium/drivers/radeonsi/si_state_draw.c
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@@ -976,17 +976,31 @@ void si_emit_cache_flush(struct si_context *sctx)
cb_db_event = V_028A90_CACHE_FLUSH_AND_INV_TS_EVENT;
}
/* TC | TC_WB = invalidate L2 data
* TC_MD | TC_WB = invalidate L2 metadata (DCC, etc.)
* TC | TC_WB | TC_MD = invalidate L2 data & metadata
/* These are the only allowed combinations. If you need to
* do multiple operations at once, do them separately.
* All operations that invalidate L2 also seem to invalidate
* metadata. Volatile (VOL) and WC flushes are not listed here.
*
* TC | TC_WB = writeback & invalidate L2 & L1
* TC | TC_WB | TC_NC = writeback & invalidate L2 for MTYPE == NC
* TC_WB | TC_NC = writeback L2 for MTYPE == NC
* TC | TC_NC = invalidate L2 for MTYPE == NC
* TC | TC_MD = writeback & invalidate L2 metadata (DCC, etc.)
* TCL1 = invalidate L1
*/
tc_flags = 0;
/* When flushing CB or DB, L2 metadata should always be invali-
* dated before texturing. Invalidating L2 data is not needed
* in some cases.
*/
tc_flags = EVENT_TC_ACTION_ENA |
EVENT_TC_MD_ACTION_ENA;
/* Ideally flush TC together with CB/DB. */
if (rctx->flags & SI_CONTEXT_INV_GLOBAL_L2) {
tc_flags |= EVENT_TC_ACTION_ENA |
EVENT_TC_WB_ACTION_ENA |
EVENT_TCL1_ACTION_ENA;
/* Writeback and invalidate everything in L2 & L1. */
tc_flags = EVENT_TC_ACTION_ENA |
EVENT_TC_WB_ACTION_ENA;
/* Clear the flags. */
rctx->flags &= ~(SI_CONTEXT_INV_GLOBAL_L2 |