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# to you under the Apache License, Version 2.0 (the
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#
#   http://www.apache.org/licenses/LICENSE-2.0
#
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"""ROCm-owned TIRx modules."""

from pathlib import Path

from tvm_ffi.libinfo import load_lib_ctypes

from tvm.base import _LOADED_LIBS


def _detect_target_from_device(dev):
    from tvm.target import Target  # pylint: disable=import-outside-toplevel

    return Target(
        {
            "kind": "rocm",
            "mtriple": "amdgcn-amd-amdhsa-hcc",
            "max_shared_memory_per_block": dev.max_shared_memory_per_block,
            "max_threads_per_block": dev.max_threads_per_block,
            "thread_warp_size": dev.warp_size,
        }
    )


def register_backend():
    """Register ROCm-owned Python semantics."""
    from tvm.target.detect_target import register_device_target_detector

    runtime_dir = Path(_LOADED_LIBS["tvm_runtime"]._name).resolve().parent
    try:
        # Runtime sidecars only need registration side effects; libtvm_runtime is global.
        _LOADED_LIBS["tvm_runtime_rocm"] = load_lib_ctypes(
            package="tvm",
            target_name="tvm_runtime_rocm",
            extra_lib_paths=[runtime_dir],
            mode="RTLD_LOCAL",
        )
    except (OSError, FileNotFoundError, RuntimeError):
        pass
    register_device_target_detector("rocm", _detect_target_from_device)
    return None


__all__ = ["register_backend"]
