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iris: Add support for flushing the blitter (hackily)

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To flush the blitter, we need to use MI_FLUSH_DW rather than the usual
PIPE_CONTROL we use on the 3D engine.  Most of our code is set up to
suggest flushes via PIPE_CONTROL commands, however, so we hackily just
emit MI_FLUSH_DW when they ask for any kind of PIPE_CONTROL flush.

Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14912>
This commit is contained in:
Kenneth Graunke 2020-09-04 16:16:48 -07:00
parent 9c5dc4985b
commit 604d97671b
1 changed files with 23 additions and 0 deletions
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23
src/gallium/drivers/iris/iris_state.c
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@ -7651,6 +7651,29 @@ iris_emit_raw_pipe_control(struct iris_batch *batch,
enum pipe_control_flags non_lri_post_sync_flags =
post_sync_flags & ~PIPE_CONTROL_LRI_POST_SYNC_OP;
#if GFX_VER >= 12
if (batch->name == IRIS_BATCH_BLITTER) {
batch_mark_sync_for_pipe_control(batch, flags);
iris_batch_sync_region_start(batch);
/* The blitter doesn't actually use PIPE_CONTROL; rather it uses the
* MI_FLUSH_DW command. However, all of our code is set up to flush
* via emitting a pipe control, so we just translate it at this point,
* even if it is a bit hacky.
*/
iris_emit_cmd(batch, GENX(MI_FLUSH_DW), fd) {
fd.Address = rw_bo(bo, offset, IRIS_DOMAIN_OTHER_WRITE);
fd.ImmediateData = imm;
#if GFX_VERx10 >= 125
/* TODO: This may not always be necessary */
fd.FlushCCS = true;
#endif
}
iris_batch_sync_region_end(batch);
return;
}
#endif
/* Recursive PIPE_CONTROL workarounds --------------------------------
* (http://knowyourmeme.com/memes/xzibit-yo-dawg)
*