drm/amdgpu: add user fence context map v2
This is a prerequisite for the GPU scheduler to make the order
of submission independent from the order of execution.
v2: properly implement the locking
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 70e783a..0220d98 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -415,6 +415,8 @@
struct amdgpu_bo *bo;
/* write-back address offset to bo start */
uint32_t offset;
+ /* resulting sequence number */
+ uint64_t sequence;
};
int amdgpu_fence_driver_init(struct amdgpu_device *adev);
@@ -985,9 +987,18 @@
* context related structures
*/
+#define AMDGPU_CTX_MAX_CS_PENDING 16
+
+struct amdgpu_ctx_ring {
+ uint64_t sequence;
+ struct fence *fences[AMDGPU_CTX_MAX_CS_PENDING];
+};
+
struct amdgpu_ctx {
struct kref refcount;
unsigned reset_counter;
+ spinlock_t ring_lock;
+ struct amdgpu_ctx_ring rings[AMDGPU_MAX_RINGS];
};
struct amdgpu_ctx_mgr {
@@ -1007,6 +1018,11 @@
struct amdgpu_ctx *amdgpu_ctx_get(struct amdgpu_fpriv *fpriv, uint32_t id);
int amdgpu_ctx_put(struct amdgpu_ctx *ctx);
+uint64_t amdgpu_ctx_add_fence(struct amdgpu_ctx *ctx, struct amdgpu_ring *ring,
+ struct fence *fence);
+struct fence *amdgpu_ctx_get_fence(struct amdgpu_ctx *ctx,
+ struct amdgpu_ring *ring, uint64_t seq);
+
int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp);