From b79d880adf279c5334c03b71a0db4b9c4a5ed1ee Mon Sep 17 00:00:00 2001
From: Jinjie Liu <jjliu@baai.ac.cn>
Date: Wed, 28 Jan 2026 14:30:43 +0800
Subject: [PATCH] remove CudaUtils dependencies

Signed-off-by: Jinjie Liu <jjliu@baai.ac.cn>
---
 python/triton_tvm_ffi/driver.py         | 26 ++++++++-----
 python/triton_tvm_ffi/utils/_ffi_api.py |  2 +
 src/utils.cc                            | 49 ++++++++++++++++++++++++-
 3 files changed, 65 insertions(+), 12 deletions(-)

diff --git a/python/triton_tvm_ffi/driver.py b/python/triton_tvm_ffi/driver.py
index d9c035d..88954ab 100644
--- a/python/triton_tvm_ffi/driver.py
+++ b/python/triton_tvm_ffi/driver.py
@@ -1,8 +1,9 @@
 from __future__ import annotations
 
-from typing import Mapping, Type
+from ctypes import c_void_p
+from typing import Mapping, Tuple, Type
 from triton.backends.nvidia.driver import CudaDriver
-from .utils import get_device_properties
+from .utils import get_device_properties, load_binary
 
 
 class TVMFFIUtils(object):
@@ -13,12 +14,11 @@ class TVMFFIUtils(object):
 
     def __init__(self, *args, **kwargs) -> None:
         super().__init__(*args, **kwargs)
-        from triton.backends.nvidia.driver import CudaUtils
 
-        self._utils: CudaUtils = CudaUtils()
-
-    def load_binary(self, *args, **kwargs):
-        return self._utils.load_binary(*args, **kwargs)
+    def load_binary(
+        self, name: str, data: bytes, shared: int, device: int
+    ) -> Tuple[c_void_p, c_void_p, int, int, int]:
+        return load_binary(name, data, shared, device)
 
     def get_device_properties(self, device_id: int) -> Mapping[str, int]:
         return get_device_properties(device_id)
@@ -34,13 +34,19 @@ class TVMFFIUtils(object):
         )
 
     def fill_tma_descriptor(self, *args, **kwargs):
-        return self._utils.fill_tma_descriptor(*args, **kwargs)
+        raise NotImplementedError(
+            '"fill_tma_descriptor" hasn\'t been supported for Hopper'
+        )
 
     def launch(self, *args, **kwargs):
-        return self._utils.launch(*args, **kwargs)
+        raise NotImplementedError(
+            '"launch" is introduced in triton after commit d2b3925410689155e0f6028e8554bba972989348, which is still not supported yed'
+        )
 
     def build_signature_metadata(self, *args, **kwargs):
-        return self._utils.build_signature_metadata(*args, **kwargs)
+        raise NotImplementedError(
+            '"launch" is introduced in triton after commit d2b3925410689155e0f6028e8554bba972989348, which is still not supported yed'
+        )
 
 
 class TVMFFIDriver(CudaDriver):
diff --git a/python/triton_tvm_ffi/utils/_ffi_api.py b/python/triton_tvm_ffi/utils/_ffi_api.py
index 5dbcc8f..79b64d3 100644
--- a/python/triton_tvm_ffi/utils/_ffi_api.py
+++ b/python/triton_tvm_ffi/utils/_ffi_api.py
@@ -17,6 +17,7 @@ LIB = _FFI_LOAD_LIB("triton_tvm_ffi", "utils")
 _FFI_INIT_FUNC("triton_tvm_ffi.utils", __name__)
 if TYPE_CHECKING:
     def get_device_properties(_0: int, /) -> Mapping[str, int]: ...
+    def load_binary(_0: str, _1: bytes, _2: int, _3: int, /) -> tuple[int, int, int, int, int]: ...
 # fmt: on
 # tvm-ffi-stubgen(end)
 
@@ -24,5 +25,6 @@ __all__ = [
     # tvm-ffi-stubgen(begin): __all__
     "LIB",
     "get_device_properties",
+    "load_binary",
     # tvm-ffi-stubgen(end)
 ]
diff --git a/src/utils.cc b/src/utils.cc
index 0466a19..104f377 100644
--- a/src/utils.cc
+++ b/src/utils.cc
@@ -1,6 +1,7 @@
 #include "exception.h"
 #include <cuda.h>
 #include <tvm/ffi/extra/cuda/cubin_launcher.h>
+#include <tvm/ffi/string.h>
 #include <tvm/ffi/tvm_ffi.h>
 
 #define CUDA_CHECK(code)                                                       \
@@ -44,8 +45,52 @@ tvm::ffi::Map<tvm::ffi::String, int32_t> GetDeviceProperties(int device_id) {
           {"mem_bus_width", mem_bus_width}};
 }
 
+tvm::ffi::Tuple<uint64_t, uint64_t, int32_t, int32_t, int32_t>
+LoadBinary(const tvm::ffi::String &name, const tvm::ffi::Bytes &data,
+           int32_t shared, CUdevice device) {
+  CUcontext pctx;
+  CUfunction fun;
+  CUmodule mod;
+  int32_t nRegs = 0;
+  int32_t nSpills = 0;
+  int32_t nMaxThreads = 0;
+  int32_t sharedOptin = 0;
+  CUDA_CHECK(cuCtxGetCurrent(&pctx));
+  if (!pctx) {
+    CUDA_CHECK(cuDevicePrimaryCtxRetain(&pctx, device));
+    CUDA_CHECK(cuCtxSetCurrent(pctx));
+  }
+  CUDA_CHECK(cuModuleLoadData(&mod, data.data()));
+  CUDA_CHECK(cuModuleGetFunction(&fun, mod, name.data()));
+  CUDA_CHECK(cuFuncGetAttribute(&nRegs, CU_FUNC_ATTRIBUTE_NUM_REGS, fun));
+  CUDA_CHECK(
+      cuFuncGetAttribute(&nSpills, CU_FUNC_ATTRIBUTE_LOCAL_SIZE_BYTES, fun));
+  CUDA_CHECK(cuFuncGetAttribute(&nMaxThreads,
+                                CU_FUNC_ATTRIBUTE_MAX_THREADS_PER_BLOCK, fun));
+  CUDA_CHECK(cuDeviceGetAttribute(
+      &sharedOptin, CU_DEVICE_ATTRIBUTE_MAX_SHARED_MEMORY_PER_BLOCK_OPTIN,
+      device));
+  static constexpr int64_t kExpectedMaxDynamicSharedMemory = 49152;
+  if (shared > kExpectedMaxDynamicSharedMemory &&
+      sharedOptin > kExpectedMaxDynamicSharedMemory) {
+    CUDA_CHECK(cuFuncSetCacheConfig(fun, CU_FUNC_CACHE_PREFER_SHARED));
+    int32_t sharedTotal = 0, sharedStatic = 0;
+    CUDA_CHECK(cuDeviceGetAttribute(
+        &sharedTotal, CU_DEVICE_ATTRIBUTE_MAX_SHARED_MEMORY_PER_MULTIPROCESSOR,
+        device));
+    CUDA_CHECK(cuFuncGetAttribute(&sharedStatic,
+                                  CU_FUNC_ATTRIBUTE_SHARED_SIZE_BYTES, fun));
+    CUDA_CHECK(
+        cuFuncSetAttribute(fun, CU_FUNC_ATTRIBUTE_MAX_DYNAMIC_SHARED_SIZE_BYTES,
+                           sharedOptin - sharedStatic));
+  }
+  return tvm::ffi::Tuple<uint64_t, uint64_t, int32_t, int32_t, int32_t>{
+      mod, fun, nRegs, nSpills, nMaxThreads};
+}
+
 TVM_FFI_STATIC_INIT_BLOCK() {
   namespace refl = tvm::ffi::reflection;
-  refl::GlobalDef().def("triton_tvm_ffi.utils.get_device_properties",
-                        GetDeviceProperties);
+  refl::GlobalDef()
+      .def("triton_tvm_ffi.utils.get_device_properties", GetDeviceProperties)
+      .def("triton_tvm_ffi.utils.load_binary", LoadBinary);
 }