[not to land, not for review] gnn

backends/apple/metal/runtime/shims/v2/aoti_kernel.h

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+// AOTI kernel-dispatch C ABI for the v2 Metal backend.
+//
+// Symbols here are called by the AOTI .so when it has a hand-written
+// shader to dispatch (shader library + kernel function + arg encoding
+// + dispatch). Buffer mgmt and tensor lifecycle live in aoti_tensor.h;
+// op-registry fallbacks (mm/bmm) live in aoti_ops.h.
+
+#pragma once
+
+#include <executorch/backends/apple/metal/runtime/shims/v2/aoti_types.h>
+
+namespace executorch {
+namespace backends {
+namespace metal {
+
+struct AOTIMetalKernelFunctionOpaque;
+using AOTIMetalKernelFunctionHandle = AOTIMetalKernelFunctionOpaque*;
+
+struct AOTIMetalShaderLibraryOpaque;
+using AOTIMetalShaderLibraryHandle = AOTIMetalShaderLibraryOpaque*;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Shader library
+AOTITorchError aoti_torch_mps_create_shader_library(
+    const char* metal_shader_source,
+    AOTIMetalShaderLibraryHandle* library_handle);
+
+AOTITorchError aoti_torch_mps_delete_shader_library(
+    AOTIMetalShaderLibraryHandle library_handle);
+
+AOTITorchError aoti_torch_mps_get_kernel_function(
+    AOTIMetalShaderLibraryHandle library_handle,
+    const char* kernel_name,
+    AOTIMetalKernelFunctionHandle* function_handle);
+
+// Kernel arg / dispatch
+AOTITorchError aoti_torch_mps_start_encoding(
+    AOTIMetalKernelFunctionHandle func);
+
+AOTITorchError aoti_torch_mps_set_arg_tensor(
+    AOTIMetalKernelFunctionHandle func,
+    unsigned idx,
+    AOTITensorHandle tensor);
+
+AOTITorchError aoti_torch_mps_set_arg_int(
+    AOTIMetalKernelFunctionHandle func,
+    unsigned idx,
+    int64_t val);
+
+AOTITorchError aoti_torch_mps_dispatch_single(
+    AOTIMetalKernelFunctionHandle func,
+    uint64_t length);
+
+AOTITorchError aoti_torch_mps_dispatch_single_with_group_size(
+    AOTIMetalKernelFunctionHandle func,
+    uint64_t length,
+    uint64_t group_size);
+
+AOTITorchError aoti_torch_mps_dispatch_array(
+    AOTIMetalKernelFunctionHandle func,
+    const uint64_t* length,
+    size_t length_size);
+
+AOTITorchError aoti_torch_mps_dispatch_array_with_group_size(
+    AOTIMetalKernelFunctionHandle func,
+    const uint64_t* length,
+    size_t length_size,
+    const uint64_t* group_size,
+    size_t group_size_size);
+
+// Command block
+typedef void (*aoti_torch_mps_command_block_callback_t)(
+    AOTIMetalKernelFunctionHandle func,
+    void* user_data);
+
+void aoti_torch_mps_shared_callback(
+    AOTIMetalKernelFunctionHandle func,
+    void* user_data);
+
+AOTITorchError aoti_torch_mps_run_command_block(
+    AOTIMetalKernelFunctionHandle func,
+    aoti_torch_mps_command_block_callback_t callback,
+    void* user_data);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+} // namespace metal
+} // namespace backends
+} // namespace executorch