From 82399b58d3250d974cb6a74c3aa96f6f2fbafef0 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Sun, 15 Sep 2019 20:17:14 +0200 Subject: [PATCH] panfrost: Add a panfrost_flush_batches_accessing_bo() helper 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 Reviewed-by: Alyssa Rosenzweig --- 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 3ccf4bb6b3e..e7eae399830 100644 --- a/src/gallium/drivers/panfrost/pan_job.c +++ b/src/gallium/drivers/panfrost/pan_job.c @@ -952,6 +952,37 @@ 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_ACCESS_WRITE || + access_type == PAN_BO_ACCESS_RW); + + hentry = _mesa_hash_table_search(ctx->accessed_bos, bo); + access = hentry ? hentry->data : NULL; + if (!access) + return; + + if (access_type & PAN_BO_ACCESS_WRITE && access->writer && + access->writer->batch) + panfrost_batch_submit(access->writer->batch); + + if (!(access_type & PAN_BO_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 e95e156a40f..25905b51673 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); -- 2.30.2