This flag used to avoid calling mem_sync without need.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 3 +++
drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c | 4 ++++
drivers/gpu/drm/amd/amdgpu/amdgpu_job.h | 3 +++
include/uapi/drm/amdgpu_drm.h | 2 ++
4 files changed, 12 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 8304d0c..d9ad841 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -238,6 +238,9 @@ static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, union drm_amdgpu_cs
if (p->uf_entry.tv.bo)
p->job->uf_addr = uf_offset;
+
+ p->job->sync_mem = cs->in.sync_mem;
+
kfree(chunk_array);
/* Use this opportunity to fill in task info for the vm */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index bece01f..9168150 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -182,6 +182,10 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
dma_fence_put(tmp);
}
+ if (job && job->sync_mem && ring->funcs->mem_sync)
+ ring->funcs->mem_sync(ring);
+
if (ring->funcs->insert_start)
ring->funcs->insert_start(ring);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
index 2e2110d..7b08a04 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.h
@@ -61,6 +61,9 @@ struct amdgpu_job {
/* user fence handling */
uint64_t uf_addr;
uint64_t uf_sequence;
+
+ /** UMD flag to flush and invalidate caches */
+ bool sync_mem;
};
int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index cfbec27..f04998d 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -566,6 +566,8 @@ struct drm_amdgpu_cs_in {
__u32 flags;
/** this points to __u64 * which point to cs chunks */
__u64 chunks;
+ /** Tell KMD to flush and invalidate caches */
+ bool sync_mem;
};
struct drm_amdgpu_cs_out {
--
2.7.4
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