// coding=utf-8
//
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#pragma once

#include "disco.h"

#include <cuda_runtime.h>
#include <c10/cuda/CUDAStream.h>

#define CHECK_CUDA_TENSOR(x) TORCH_CHECK(x.device().is_cuda(), #x " must be a CUDA tensor")
#define CHECK_CUDA_INPUT_TENSOR(x)                                                                                     \
  CHECK_CUDA_TENSOR(x);                                                                                                \
  CHECK_CONTIGUOUS_TENSOR(x)

#define DIV_UP(a, b) (((a) + ((b)-1)) / (b))

#define MIN_THREADS (64)
#define ELXTH_MAX (32)

// forward kernel
torch::Tensor disco_cuda_fwd(torch::Tensor inp, torch::Tensor roff_idx, torch::Tensor ker_idx, torch::Tensor row_idx,
                             torch::Tensor col_idx, torch::Tensor val, int64_t K, int64_t Ho, int64_t Wo);

// backward kernel
torch::Tensor disco_cuda_bwd(torch::Tensor inp, torch::Tensor roff_idx, torch::Tensor ker_idx, torch::Tensor row_idx,
                             torch::Tensor col_idx, torch::Tensor val, int64_t K, int64_t Ho, int64_t Wo);