This will allow us to only flush batches touching a specific resource,
which is particularly useful when the CPU needs to access a BO.
Signed-off-by: Boris Brezillon <boris.brezil...@collabora.com>
---
src/gallium/drivers/panfrost/pan_job.c | 31 ++++++++++++++++++++++++++
src/gallium/drivers/panfrost/pan_job.h | 4 ++++
2 files changed, 35 insertions(+)
diff --git a/src/gallium/drivers/panfrost/pan_job.c
b/src/gallium/drivers/panfrost/pan_job.c
index e36f252e01fc..de2922a8366e 100644
--- a/src/gallium/drivers/panfrost/pan_job.c
+++ b/src/gallium/drivers/panfrost/pan_job.c
@@ -921,6 +921,37 @@ panfrost_flush_all_batches(struct panfrost_context *ctx,
bool wait)
util_dynarray_fini(&syncobjs);
}
+void
+panfrost_flush_batches_accessing_bo(struct panfrost_context *ctx,
+ struct panfrost_bo *bo,
+ uint32_t access_type)
+{
+ struct panfrost_bo_access *access;
+ struct hash_entry *hentry;
+
+ /* It doesn't make any to flush only the readers. */
+ assert(access_type == PAN_BO_GPU_ACCESS_WRITE ||
+ access_type == PAN_BO_GPU_ACCESS_RW);
+
+ hentry = _mesa_hash_table_search(ctx->accessed_bos, bo);
+ access = hentry ? hentry->data : NULL;
+ if (!access)
+ return;
+
+ if (access_type & PAN_BO_GPU_ACCESS_WRITE && access->writer &&
+ access->writer->batch)
+ panfrost_batch_submit(access->writer->batch);
+
+ if (!(access_type & PAN_BO_GPU_ACCESS_READ))
+ return;
+
+ util_dynarray_foreach(&access->readers, struct panfrost_batch_fence *,
+ reader) {
+ if (*reader && (*reader)->batch)
+ panfrost_batch_submit((*reader)->batch);
+ }
+}
+
void
panfrost_batch_set_requirements(struct panfrost_batch *batch)
{
diff --git a/src/gallium/drivers/panfrost/pan_job.h
b/src/gallium/drivers/panfrost/pan_job.h
index 5c9d5e3715d5..d198864ce4f7 100644
--- a/src/gallium/drivers/panfrost/pan_job.h
+++ b/src/gallium/drivers/panfrost/pan_job.h
@@ -185,6 +185,10 @@ panfrost_batch_create_bo(struct panfrost_batch *batch,
size_t size,
void
panfrost_flush_all_batches(struct panfrost_context *ctx, bool wait);
+void
+panfrost_flush_batches_accessing_bo(struct panfrost_context *ctx,
+ struct panfrost_bo *bo, uint32_t flags);
+
void
panfrost_batch_set_requirements(struct panfrost_batch *batch);
--
2.21.0
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