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From d88dcc25eab90cc70ad2586be6bbe036daff4c46 Mon Sep 17 00:00:00 2001
From: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Date: Thu, 31 Jan 2019 15:44:22 -0500
Subject: [PATCH 1190/2940] drm/amdgpu: Add
AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
New chunk for dependency on start of job's execution instead on
the end. This is used for GPU deadlock prevention when
userspace uses mid-IB fences to wait for mid-IB work on other rings.
v2: Fix typo in AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES
v3: Bump KMS version
v4: put old fence AFTER acquiring the scheduled fence.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Suggested-by: Christian Koenig <Christian.Koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Chaudhary Amit Kumar <Chaudharyamit.Kumar@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 13 ++++++++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 3 ++-
include/uapi/drm/amdgpu_drm.h | 1 +
3 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index b5258697a4f8..7a4508f1ab81 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -215,6 +215,7 @@ static int amdgpu_cs_parser_init(struct amdgpu_cs_parser *p, union drm_amdgpu_cs
case AMDGPU_CHUNK_ID_DEPENDENCIES:
case AMDGPU_CHUNK_ID_SYNCOBJ_IN:
case AMDGPU_CHUNK_ID_SYNCOBJ_OUT:
+ case AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES:
break;
default:
@@ -1093,6 +1094,15 @@ static int amdgpu_cs_process_fence_dep(struct amdgpu_cs_parser *p,
fence = amdgpu_ctx_get_fence(ctx, entity,
deps[i].handle);
+
+ if (chunk->chunk_id == AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES) {
+ struct drm_sched_fence *s_fence = to_drm_sched_fence(fence);
+ struct dma_fence *old = fence;
+
+ fence = dma_fence_get(&s_fence->scheduled);
+ dma_fence_put(old);
+ }
+
if (IS_ERR(fence)) {
r = PTR_ERR(fence);
amdgpu_ctx_put(ctx);
@@ -1180,7 +1190,8 @@ static int amdgpu_cs_dependencies(struct amdgpu_device *adev,
chunk = &p->chunks[i];
- if (chunk->chunk_id == AMDGPU_CHUNK_ID_DEPENDENCIES) {
+ if (chunk->chunk_id == AMDGPU_CHUNK_ID_DEPENDENCIES ||
+ chunk->chunk_id == AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES) {
r = amdgpu_cs_process_fence_dep(p, chunk);
if (r)
return r;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 39a60b8076c4..c3eb1875e54e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -71,9 +71,10 @@
* - 3.25.0 - Add support for sensor query info (stable pstate sclk/mclk).
* - 3.26.0 - GFX9: Process AMDGPU_IB_FLAG_TC_WB_NOT_INVALIDATE.
* - 3.27.0 - Add new chunk to to AMDGPU_CS to enable BO_LIST creation.
+ * - 3.28.0 - Add AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES
*/
#define KMS_DRIVER_MAJOR 3
-#define KMS_DRIVER_MINOR 27
+#define KMS_DRIVER_MINOR 28
#define KMS_DRIVER_PATCHLEVEL 0
#define AMDGPU_VERSION "18.50.1.418"
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 8129a2beffeb..29ef0f434e3f 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -582,6 +582,7 @@ struct drm_amdgpu_gem_va {
#define AMDGPU_CHUNK_ID_SYNCOBJ_IN 0x04
#define AMDGPU_CHUNK_ID_SYNCOBJ_OUT 0x05
#define AMDGPU_CHUNK_ID_BO_HANDLES 0x06
+#define AMDGPU_CHUNK_ID_SCHEDULED_DEPENDENCIES 0x07
struct drm_amdgpu_cs_chunk {
__u32 chunk_id;
--
2.17.1
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