From 053251f18c9f5159f3b27145cf07013b11d05723 Mon Sep 17 00:00:00 2001
From: Kenneth Graunke <kenneth@whitecape.org>
Date: Mon, 15 Nov 2021 15:59:55 -0800
Subject: [PATCH] iris: Implement iris_blorp_exec() for the blitter engine

This splits iris_blorp_exec() into separate functions for executing on
the render command streamer and the blitter command streamer.  A future
patch could add a separate iris_blorp_exec_compute() path that skips a
bunch of render-specific work.

Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14687>
---
 src/gallium/drivers/iris/iris_blorp.c | 38 +++++++++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/iris/iris_blorp.c b/src/gallium/drivers/iris/iris_blorp.c
index 11bb3f7f65d..bc465037488 100644
--- a/src/gallium/drivers/iris/iris_blorp.c
+++ b/src/gallium/drivers/iris/iris_blorp.c
@@ -266,8 +266,8 @@ blorp_get_l3_config(struct blorp_batch *blorp_batch)
 }
 
 static void
-iris_blorp_exec(struct blorp_batch *blorp_batch,
-                const struct blorp_params *params)
+iris_blorp_exec_render(struct blorp_batch *blorp_batch,
+                       const struct blorp_params *params)
 {
    struct iris_context *ice = blorp_batch->blorp->driver_ctx;
    struct iris_batch *batch = blorp_batch->driver_batch;
@@ -399,6 +399,40 @@ iris_blorp_exec(struct blorp_batch *blorp_batch,
                          IRIS_DOMAIN_DEPTH_WRITE);
 }
 
+static void
+iris_blorp_exec_blitter(struct blorp_batch *blorp_batch,
+                        const struct blorp_params *params)
+{
+   struct iris_batch *batch = blorp_batch->driver_batch;
+
+   /* Around the length of a XY_BLOCK_COPY_BLT and MI_FLUSH_DW */
+   iris_require_command_space(batch, 108);
+
+   iris_handle_always_flush_cache(batch);
+
+   blorp_exec(blorp_batch, params);
+
+   iris_handle_always_flush_cache(batch);
+
+   if (params->src.enabled) {
+      iris_bo_bump_seqno(params->src.addr.buffer, batch->next_seqno,
+                         IRIS_DOMAIN_OTHER_READ);
+   }
+
+   iris_bo_bump_seqno(params->dst.addr.buffer, batch->next_seqno,
+                      IRIS_DOMAIN_OTHER_WRITE);
+}
+
+static void
+iris_blorp_exec(struct blorp_batch *blorp_batch,
+                const struct blorp_params *params)
+{
+   if (blorp_batch->flags & BLORP_BATCH_USE_BLITTER)
+      iris_blorp_exec_blitter(blorp_batch, params);
+   else
+      iris_blorp_exec_render(blorp_batch, params);
+}
+
 static void
 blorp_measure_start(struct blorp_batch *blorp_batch,
                     const struct blorp_params *params)