1 /*
2 * Copyright (c) 2017-2018, 2022 Arm Limited.
3 *
4 * SPDX-License-Identifier: MIT
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in all
14 * copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25 #ifndef NO_MULTI_THREADING
26 #include <mutex>
27 #endif
28 #include <cstdint>
29
30 #include "arm_gemm.hpp"
31 #include "kernel_weight_format.hpp"
32 #include "utils.hpp"
33
34 namespace arm_gemm {
35
36 #ifndef NO_MULTI_THREADING
37 std::mutex report_mutex;
38 #endif
39
get_weight_format(const KernelWeightFormat kwf,size_t element_size)40 WeightFormat get_weight_format(const KernelWeightFormat kwf, size_t element_size) {
41 if (kwf==KernelWeightFormat::NON_FIXED) {
42 return WeightFormat::UNSPECIFIED;
43 }
44
45 uint32_t kwf_i = static_cast<uint32_t>(kwf);
46 uint32_t wf_i = 0;
47
48 const auto block_bytes = (kwf_i >> 8) & 0xf;
49 const auto vector_count = (kwf_i >> 12) & 0xf;
50
51 uint32_t vector_bytes;
52
53 // For fast mode BF16 kernels set the appropriate bit and override element size to 2.
54 if (kwf_i & 0x10) {
55 element_size = 2;
56 wf_i |= 0x10;
57 }
58
59 // Get total bytes in vector output
60 if (kwf_i & 0x1) {
61 vector_bytes = vector_count * get_vector_length<uint8_t>();
62 } else {
63 vector_bytes = vector_count * 16;
64 }
65
66 auto input_blocking = block_bytes / element_size;
67 auto output_blocking = vector_bytes / block_bytes;
68
69 wf_i |= (input_blocking << 20);
70 wf_i |= (output_blocking << 8);
71
72 return static_cast<WeightFormat>(wf_i);
73 }
74
75 } // namespace arm_gemm
76