//
// SPDX-FileCopyrightText: Copyright 2025 Arm Limited and/or its affiliates <open-source-office@arm.com>
//
// SPDX-License-Identifier: Apache-2.0
//

#pragma once

#include <stddef.h>

#ifdef __cplusplus
extern "C" {
#endif  // __cplusplus

/// Micro-kernel dependencies
///
/// -# kai_lhs_imatmul_pack_x16p2vlx2_x16p_sme to pack the LHS matrix.
/// -# kai_rhs_imatmul_pack_kxn_x16p2vlx2b_x16_x16_sme to pack the RHS matrix.

/// Gets m step value.
///
/// The starting row index must be divisible by `m_step`.
///
/// @return The m step value.
size_t kai_get_m_step_imatmul_clamp_f16_f16p2vlx2_f16p2vlx2_2vlx2vl_sme2_mopa(void);

/// Gets n step value.
///
/// The starting column index must be divisible by `n_step`.
///
/// @return The n step value.
size_t kai_get_n_step_imatmul_clamp_f16_f16p2vlx2_f16p2vlx2_2vlx2vl_sme2_mopa(void);

/// Gets the offset in bytes to the data element in the packed LHS matrix buffer.
///
/// @param[in] m_idx Row index in the unpacked LHS matrix. Must be a multiple of `m_step`.
/// @param[in] k_chunk_count Number of LHS column splits.
/// @param[in] k_chunk_length Length of a LHS column split.
///
/// @return The offset in bytes to the data element.
size_t kai_get_lhs_packed_offset_imatmul_clamp_f16_f16p2vlx2_f16p2vlx2_2vlx2vl_sme2_mopa(
    size_t m_idx, size_t k_chunk_count, size_t k_chunk_length);

/// Gets the offset in bytes to the data element in the packed RHS matrix buffer.
///
/// @param[in] n_idx Column index in the unpacked RHS matrix. Must be a multiple of `n_step`.
/// @param[in] k_chunk_count Number of LHS column splits.
/// @param[in] k_chunk_length Length of a LHS column split.
///
/// @return The offset in bytes to the data element.
size_t kai_get_rhs_packed_offset_imatmul_clamp_f16_f16p2vlx2_f16p2vlx2_2vlx2vl_sme2_mopa(
    size_t n_idx, size_t k_chunk_count, size_t k_chunk_length);

/// Gets the offset in bytes to the data element in the destination matrix buffer.
///
/// @param[in] m_idx Row index. Must be a multiple of `m_step`.
/// @param[in] n_idx Column index. Must be a multiple of `n_step`.
/// @param[in] dst_stride_row Row stride in bytes.
///
/// @return The offset in bytes to the data element.
size_t kai_get_dst_offset_imatmul_clamp_f16_f16p2vlx2_f16p2vlx2_2vlx2vl_sme2_mopa(
    size_t m_idx, size_t n_idx, size_t dst_stride_row);

/// Gets the size in bytes of the destination matrix buffer.
///
/// @param[in] m Number of rows.
/// @param[in] n Number of columns.
///
/// @return The size in bytes of the destination matrix buffer.
size_t kai_get_dst_size_imatmul_clamp_f16_f16p2vlx2_f16p2vlx2_2vlx2vl_sme2_mopa(size_t m, size_t n);

/// Runs the matrix multiplication microkernel followed by a clamp operation.
///
/// The pointer of each buffers (packed LHS, packed RHS and output) needs to be added with offset
/// calculated using the following functions:
///
///   * Packed LHS: @ref kai_get_lhs_packed_offset_imatmul_clamp_f16_f16p2vlx2_f16p2vlx2_2vlx2vl_sme2_mopa.
///   * Packed RHS: @ref kai_get_rhs_packed_offset_imatmul_clamp_f16_f16p2vlx2_f16p2vlx2_2vlx2vl_sme2_mopa.
///   * Output: @ref kai_get_dst_offset_imatmul_clamp_f16_f16p2vlx2_f16p2vlx2_2vlx2vl_sme2_mopa.
///
/// @param[in] m Number of output rows to be computed.
/// @param[in] n Number of output columns to be computed.
/// @param[in] k_chunk_count Number of LHS column splits.
/// @param[in] k_chunk_length Length of a LHS column split.
/// @param[in] lhs_packed Packed LHS matrix buffer.
/// @param[in] rhs_packed Packed RHS matrix buffer.
/// @param[out] dst Output matrix buffer.
/// @param[in] dst_stride_row Row stride in bytes of the output matrix.
/// @param[in] clamp_min Minimum value to clamp the final result.
/// @param[in] clamp_max Maximum value to clamp the final result.
void kai_run_imatmul_clamp_f16_f16p2vlx2_f16p2vlx2_2vlx2vl_sme2_mopa(
    size_t m, size_t n, size_t k_chunk_count, size_t k_chunk_length, const void* lhs_packed, const void* rhs_packed,
    void* dst, size_t dst_stride_row, float clamp_min, float clamp_max);

#ifdef __cplusplus
}  // extern "C"
#endif  // __cplusplus
