/*
 * Copyright (c) 2022-2023 Arm Limited.
 *
 * SPDX-License-Identifier: MIT
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
#ifdef __aarch64__

#include <cstddef>
#include "../../bfloat.hpp"

namespace arm_gemm {

void a64_ffinterleaved_bf16fp32_mmla_8x12(
    const bfloat16 *Apanel,
    const bfloat16 *Bpanel,
    size_t B_stride,
    float *Cpanel,
    int ablocks,
    size_t N,
    int K) {

    struct KernelArgs {
        size_t K = {};
        const bfloat16 *Bpanel = {};
        size_t N = {};
        size_t B_stride = {};
        const bfloat16 *cur_B_ptr = {};
    } ka;

    ka.K = (K/4) - 1;
    ka.Bpanel = Bpanel;
    ka.N = N;
    ka.B_stride = B_stride;

    __asm__ __volatile__(
      "1:"  // Height loop
      "ldr x20, [%x[args_ptr], %[offsetof_Bpanel]]\n"
      "ldr x25, [%x[args_ptr], %[offsetof_N]]\n"
      "str x20, [%x[args_ptr], %[offsetof_cur_B_ptr]]\n"
      "mov x24, %x[Apanel]\n"
      "2:"  // Width loop
      "ldr x23, [%x[args_ptr], %[offsetof_cur_B_ptr]]\n"
      "ldr x20, [%x[args_ptr], %[offsetof_B_stride]]\n"
      "add x22, x23, x20, LSL #1\n"
      "add x21, x22, x20, LSL #1\n"
      "add x20, x21, x20, LSL #1\n"
      "str x20, [%x[args_ptr], %[offsetof_cur_B_ptr]]\n"
      "cmp x25, #0x8\n"
      "mov %x[Apanel], x24\n"
      "bgt 3f\n"
      "cmp x25, #0x4\n"
      "mov x21, x23\n"
      "bgt 3f\n"
      "mov x22, x23\n"
      "3:"  // B setup done
      "ldr q4, [x23, #0x0]\n"
      "ldr q0, [%x[Apanel], #0x0]\n"
      "movi v8.16b, #0x0\n"
      "ldr q1, [%x[Apanel], #0x10]\n"
      "ldr q5, [x23, #0x10]\n"
      "movi v9.16b, #0x0\n"
      "ldr q2, [%x[Apanel], #0x20]\n"
      "ldr x20, [%x[args_ptr], %[offsetof_K]]\n"
      "cmp x20, #0x2\n"
      "movi v10.16b, #0x0\n"
      "movi v11.16b, #0x0\n"
      "add x23, x23, #0x20\n"
      "movi v12.16b, #0x0\n"
      "movi v13.16b, #0x0\n"
      "add %x[Apanel], %x[Apanel], #0x30\n"
      "movi v14.16b, #0x0\n"
      "movi v15.16b, #0x0\n"
      "movi v16.16b, #0x0\n"
      "movi v17.16b, #0x0\n"
      "movi v18.16b, #0x0\n"
      "movi v19.16b, #0x0\n"
      "movi v20.16b, #0x0\n"
      "movi v21.16b, #0x0\n"
      "movi v22.16b, #0x0\n"
      "movi v23.16b, #0x0\n"
      "movi v24.16b, #0x0\n"
      "movi v25.16b, #0x0\n"
      "movi v26.16b, #0x0\n"
      "movi v27.16b, #0x0\n"
      "movi v28.16b, #0x0\n"
      "movi v29.16b, #0x0\n"
      "movi v30.16b, #0x0\n"
      "movi v31.16b, #0x0\n"
      "blt 5f\n"
      "4:"  // main loop head
      "ldr q6, [%x[Apanel], #0x0]\n"
      "ldr q7, [x22, #0x0]\n"
      ".inst 0x6e44ec08  // bfmmla v8.4s, v0.8h, v4.8h\n"
      "ldr q3, [x22, #0x10]\n"
      ".inst 0x6e45ec0b  // bfmmla v11.4s, v0.8h, v5.8h\n"
      ".inst 0x6e44ec2e  // bfmmla v14.4s, v1.8h, v4.8h\n"
      ".inst 0x6e45ec31  // bfmmla v17.4s, v1.8h, v5.8h\n"
      ".inst 0x6e44ec54  // bfmmla v20.4s, v2.8h, v4.8h\n"
      "sub x20, x20, #0x2\n"
      ".inst 0x6e45ec57  // bfmmla v23.4s, v2.8h, v5.8h\n"
      ".inst 0x6e44ecda  // bfmmla v26.4s, v6.8h, v4.8h\n"
      "ldr q4, [x21, #0x0]\n"
      ".inst 0x6e45ecdd  // bfmmla v29.4s, v6.8h, v5.8h\n"
      "ldr q5, [x21, #0x10]\n"
      ".inst 0x6e47ec09  // bfmmla v9.4s, v0.8h, v7.8h\n"
      ".inst 0x6e43ec0c  // bfmmla v12.4s, v0.8h, v3.8h\n"
      ".inst 0x6e47ec2f  // bfmmla v15.4s, v1.8h, v7.8h\n"
      "cmp x20, #0x2\n"
      ".inst 0x6e43ec32  // bfmmla v18.4s, v1.8h, v3.8h\n"
      ".inst 0x6e47ec55  // bfmmla v21.4s, v2.8h, v7.8h\n"
      ".inst 0x6e43ec58  // bfmmla v24.4s, v2.8h, v3.8h\n"
      ".inst 0x6e47ecdb  // bfmmla v27.4s, v6.8h, v7.8h\n"
      "ldr q7, [x23, #0x0]\n"
      ".inst 0x6e43ecde  // bfmmla v30.4s, v6.8h, v3.8h\n"
      "ldr q3, [x23, #0x10]\n"
      ".inst 0x6e44ec0a  // bfmmla v10.4s, v0.8h, v4.8h\n"
      ".inst 0x6e45ec0d  // bfmmla v13.4s, v0.8h, v5.8h\n"
      "ldr q0, [%x[Apanel], #0x10]\n"
      ".inst 0x6e44ec30  // bfmmla v16.4s, v1.8h, v4.8h\n"
      ".inst 0x6e45ec33  // bfmmla v19.4s, v1.8h, v5.8h\n"
      "ldr q1, [%x[Apanel], #0x20]\n"
      ".inst 0x6e44ec56  // bfmmla v22.4s, v2.8h, v4.8h\n"
      ".inst 0x6e45ec59  // bfmmla v25.4s, v2.8h, v5.8h\n"
      "ldr q2, [%x[Apanel], #0x30]\n"
      ".inst 0x6e44ecdc  // bfmmla v28.4s, v6.8h, v4.8h\n"
      "ldr q4, [x22, #0x20]\n"
      ".inst 0x6e45ecdf  // bfmmla v31.4s, v6.8h, v5.8h\n"
      "ldr q6, [%x[Apanel], #0x40]\n"
      "ldr q5, [x22, #0x30]\n"
      ".inst 0x6e47ec08  // bfmmla v8.4s, v0.8h, v7.8h\n"
      ".inst 0x6e43ec0b  // bfmmla v11.4s, v0.8h, v3.8h\n"
      ".inst 0x6e47ec2e  // bfmmla v14.4s, v1.8h, v7.8h\n"
      ".inst 0x6e43ec31  // bfmmla v17.4s, v1.8h, v3.8h\n"
      "add x22, x22, #0x40\n"
      ".inst 0x6e47ec54  // bfmmla v20.4s, v2.8h, v7.8h\n"
      ".inst 0x6e43ec57  // bfmmla v23.4s, v2.8h, v3.8h\n"
      ".inst 0x6e47ecda  // bfmmla v26.4s, v6.8h, v7.8h\n"
      "ldr q7, [x21, #0x20]\n"
      ".inst 0x6e43ecdd  // bfmmla v29.4s, v6.8h, v3.8h\n"
      "ldr q3, [x21, #0x30]\n"
      ".inst 0x6e44ec09  // bfmmla v9.4s, v0.8h, v4.8h\n"
      ".inst 0x6e45ec0c  // bfmmla v12.4s, v0.8h, v5.8h\n"
      ".inst 0x6e44ec2f  // bfmmla v15.4s, v1.8h, v4.8h\n"
      ".inst 0x6e45ec32  // bfmmla v18.4s, v1.8h, v5.8h\n"
      "add x21, x21, #0x40\n"
      ".inst 0x6e44ec55  // bfmmla v21.4s, v2.8h, v4.8h\n"
      ".inst 0x6e45ec58  // bfmmla v24.4s, v2.8h, v5.8h\n"
      ".inst 0x6e44ecdb  // bfmmla v27.4s, v6.8h, v4.8h\n"
      "ldr q4, [x23, #0x20]\n"
      ".inst 0x6e45ecde  // bfmmla v30.4s, v6.8h, v5.8h\n"
      "ldr q5, [x23, #0x30]\n"
      ".inst 0x6e47ec0a  // bfmmla v10.4s, v0.8h, v7.8h\n"
      ".inst 0x6e43ec0d  // bfmmla v13.4s, v0.8h, v3.8h\n"
      "ldr q0, [%x[Apanel], #0x50]\n"
      ".inst 0x6e47ec30  // bfmmla v16.4s, v1.8h, v7.8h\n"
      ".inst 0x6e43ec33  // bfmmla v19.4s, v1.8h, v3.8h\n"
      "ldr q1, [%x[Apanel], #0x60]\n"
      ".inst 0x6e47ec56  // bfmmla v22.4s, v2.8h, v7.8h\n"
      ".inst 0x6e43ec59  // bfmmla v25.4s, v2.8h, v3.8h\n"
      "ldr q2, [%x[Apanel], #0x70]\n"
      ".inst 0x6e47ecdc  // bfmmla v28.4s, v6.8h, v7.8h\n"
      ".inst 0x6e43ecdf  // bfmmla v31.4s, v6.8h, v3.8h\n"
      "add %x[Apanel], %x[Apanel], #0x80\n"
      "add x23, x23, #0x40\n"
      "bge 4b\n"
      "5:"  // main loop skip
      "ldr q3, [%x[Apanel], #0x0]\n"
      "ldr q6, [x22, #0x0]\n"
      ".inst 0x6e44ec08  // bfmmla v8.4s, v0.8h, v4.8h\n"
      "ldr q7, [x22, #0x10]\n"
      ".inst 0x6e45ec0b  // bfmmla v11.4s, v0.8h, v5.8h\n"
      ".inst 0x6e44ec2e  // bfmmla v14.4s, v1.8h, v4.8h\n"
      ".inst 0x6e45ec31  // bfmmla v17.4s, v1.8h, v5.8h\n"
      ".inst 0x6e44ec54  // bfmmla v20.4s, v2.8h, v4.8h\n"
      "add %x[Apanel], %x[Apanel], #0x10\n"
      ".inst 0x6e45ec57  // bfmmla v23.4s, v2.8h, v5.8h\n"
      ".inst 0x6e44ec7a  // bfmmla v26.4s, v3.8h, v4.8h\n"
      "ldr q4, [x21, #0x0]\n"
      ".inst 0x6e45ec7d  // bfmmla v29.4s, v3.8h, v5.8h\n"
      "ldr q5, [x21, #0x10]\n"
      ".inst 0x6e46ec09  // bfmmla v9.4s, v0.8h, v6.8h\n"
      ".inst 0x6e47ec0c  // bfmmla v12.4s, v0.8h, v7.8h\n"
      ".inst 0x6e46ec2f  // bfmmla v15.4s, v1.8h, v6.8h\n"
      "add x22, x22, #0x20\n"
      ".inst 0x6e47ec32  // bfmmla v18.4s, v1.8h, v7.8h\n"
      ".inst 0x6e46ec55  // bfmmla v21.4s, v2.8h, v6.8h\n"
      "add x21, x21, #0x20\n"
      ".inst 0x6e47ec58  // bfmmla v24.4s, v2.8h, v7.8h\n"
      ".inst 0x6e46ec7b  // bfmmla v27.4s, v3.8h, v6.8h\n"
      ".inst 0x6e47ec7e  // bfmmla v30.4s, v3.8h, v7.8h\n"
      ".inst 0x6e44ec0a  // bfmmla v10.4s, v0.8h, v4.8h\n"
      ".inst 0x6e45ec0d  // bfmmla v13.4s, v0.8h, v5.8h\n"
      ".inst 0x6e44ec30  // bfmmla v16.4s, v1.8h, v4.8h\n"
      ".inst 0x6e45ec33  // bfmmla v19.4s, v1.8h, v5.8h\n"
      ".inst 0x6e44ec56  // bfmmla v22.4s, v2.8h, v4.8h\n"
      ".inst 0x6e45ec59  // bfmmla v25.4s, v2.8h, v5.8h\n"
      ".inst 0x6e44ec7c  // bfmmla v28.4s, v3.8h, v4.8h\n"
      ".inst 0x6e45ec7f  // bfmmla v31.4s, v3.8h, v5.8h\n"
      "cbz x20, 6f\n"
      "ldr q1, [x23, #0x0]\n"
      "ldr q7, [%x[Apanel], #0x0]\n"
      ".inst 0x6e41ece8  // bfmmla v8.4s, v7.8h, v1.8h\n"
      "ldr q6, [%x[Apanel], #0x10]\n"
      "ldr q0, [x23, #0x10]\n"
      ".inst 0x6e40eceb  // bfmmla v11.4s, v7.8h, v0.8h\n"
      "ldr q5, [%x[Apanel], #0x20]\n"
      "ldr q4, [%x[Apanel], #0x30]\n"
      ".inst 0x6e41ecce  // bfmmla v14.4s, v6.8h, v1.8h\n"
      "ldr q3, [x22, #0x0]\n"
      "ldr q2, [x22, #0x10]\n"
      ".inst 0x6e40ecd1  // bfmmla v17.4s, v6.8h, v0.8h\n"
      ".inst 0x6e41ecb4  // bfmmla v20.4s, v5.8h, v1.8h\n"
      ".inst 0x6e40ecb7  // bfmmla v23.4s, v5.8h, v0.8h\n"
      "add %x[Apanel], %x[Apanel], #0x40\n"
      ".inst 0x6e41ec9a  // bfmmla v26.4s, v4.8h, v1.8h\n"
      "ldr q1, [x21, #0x0]\n"
      ".inst 0x6e40ec9d  // bfmmla v29.4s, v4.8h, v0.8h\n"
      "ldr q0, [x21, #0x10]\n"
      ".inst 0x6e43ece9  // bfmmla v9.4s, v7.8h, v3.8h\n"
      ".inst 0x6e42ecec  // bfmmla v12.4s, v7.8h, v2.8h\n"
      ".inst 0x6e43eccf  // bfmmla v15.4s, v6.8h, v3.8h\n"
      ".inst 0x6e42ecd2  // bfmmla v18.4s, v6.8h, v2.8h\n"
      ".inst 0x6e43ecb5  // bfmmla v21.4s, v5.8h, v3.8h\n"
      ".inst 0x6e42ecb8  // bfmmla v24.4s, v5.8h, v2.8h\n"
      ".inst 0x6e43ec9b  // bfmmla v27.4s, v4.8h, v3.8h\n"
      ".inst 0x6e42ec9e  // bfmmla v30.4s, v4.8h, v2.8h\n"
      ".inst 0x6e41ecea  // bfmmla v10.4s, v7.8h, v1.8h\n"
      ".inst 0x6e40eced  // bfmmla v13.4s, v7.8h, v0.8h\n"
      ".inst 0x6e41ecd0  // bfmmla v16.4s, v6.8h, v1.8h\n"
      ".inst 0x6e40ecd3  // bfmmla v19.4s, v6.8h, v0.8h\n"
      ".inst 0x6e41ecb6  // bfmmla v22.4s, v5.8h, v1.8h\n"
      ".inst 0x6e40ecb9  // bfmmla v25.4s, v5.8h, v0.8h\n"
      ".inst 0x6e41ec9c  // bfmmla v28.4s, v4.8h, v1.8h\n"
      ".inst 0x6e40ec9f  // bfmmla v31.4s, v4.8h, v0.8h\n"
      "6:"  // multiply loop done
      "subs x25, x25, #0xc\n"
      "uzp1 v0.2d, v8.2d, v11.2d\n"
      "uzp2 v8.2d, v8.2d, v11.2d\n"
      "uzp1 v1.2d, v9.2d, v12.2d\n"
      "uzp2 v9.2d, v9.2d, v12.2d\n"
      "str q0, [%x[Cpanel], #0x0]\n"
      "uzp1 v0.2d, v10.2d, v13.2d\n"
      "uzp2 v10.2d, v10.2d, v13.2d\n"
      "str q1, [%x[Cpanel], #0x10]\n"
      "str q0, [%x[Cpanel], #0x20]\n"
      "uzp1 v0.2d, v14.2d, v17.2d\n"
      "uzp2 v14.2d, v14.2d, v17.2d\n"
      "str q8, [%x[Cpanel], #0x30]\n"
      "uzp1 v2.2d, v15.2d, v18.2d\n"
      "uzp2 v15.2d, v15.2d, v18.2d\n"
      "str q9, [%x[Cpanel], #0x40]\n"
      "uzp1 v17.2d, v16.2d, v19.2d\n"
      "uzp2 v16.2d, v16.2d, v19.2d\n"
      "str q10, [%x[Cpanel], #0x50]\n"
      "uzp1 v1.2d, v20.2d, v23.2d\n"
      "uzp2 v20.2d, v20.2d, v23.2d\n"
      "str q0, [%x[Cpanel], #0x60]\n"
      "uzp1 v0.2d, v21.2d, v24.2d\n"
      "uzp2 v21.2d, v21.2d, v24.2d\n"
      "str q2, [%x[Cpanel], #0x70]\n"
      "uzp1 v23.2d, v22.2d, v25.2d\n"
      "uzp2 v22.2d, v22.2d, v25.2d\n"
      "str q17, [%x[Cpanel], #0x80]\n"
      "uzp1 v19.2d, v26.2d, v29.2d\n"
      "uzp2 v26.2d, v26.2d, v29.2d\n"
      "str q14, [%x[Cpanel], #0x90]\n"
      "uzp1 v18.2d, v27.2d, v30.2d\n"
      "uzp2 v27.2d, v27.2d, v30.2d\n"
      "str q15, [%x[Cpanel], #0xa0]\n"
      "uzp1 v17.2d, v28.2d, v31.2d\n"
      "uzp2 v28.2d, v28.2d, v31.2d\n"
      "str q16, [%x[Cpanel], #0xb0]\n"
      "str q1, [%x[Cpanel], #0xc0]\n"
      "str q0, [%x[Cpanel], #0xd0]\n"
      "str q23, [%x[Cpanel], #0xe0]\n"
      "str q20, [%x[Cpanel], #0xf0]\n"
      "str q21, [%x[Cpanel], #0x100]\n"
      "str q22, [%x[Cpanel], #0x110]\n"
      "str q19, [%x[Cpanel], #0x120]\n"
      "str q18, [%x[Cpanel], #0x130]\n"
      "str q17, [%x[Cpanel], #0x140]\n"
      "str q26, [%x[Cpanel], #0x150]\n"
      "str q27, [%x[Cpanel], #0x160]\n"
      "str q28, [%x[Cpanel], #0x170]\n"
      "add %x[Cpanel], %x[Cpanel], #0x180\n"
      "bgt 2b\n"
      "subs %x[ablocks], %x[ablocks], #0x1\n"
      "bne 1b\n"
      : [Apanel] "+&r" (Apanel), [Cpanel] "+&r" (Cpanel), [ablocks] "+&r" (ablocks)
      : [args_ptr] "r" (&ka), [offsetof_B_stride] "I" (offsetof(KernelArgs, B_stride)), [offsetof_Bpanel] "I" (offsetof(KernelArgs, Bpanel)), [offsetof_K] "I" (offsetof(KernelArgs, K)), [offsetof_N] "I" (offsetof(KernelArgs, N)), [offsetof_cur_B_ptr] "I" (offsetof(KernelArgs, cur_B_ptr))
      : "cc", "memory", "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31", "x20", "x21", "x22", "x23", "x24", "x25"
    );
}

} // namespace arm_gemm
#endif // __aarch64__