138 lines
4.1 KiB
C
138 lines
4.1 KiB
C
/*****************************************************************************
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Copyright (c) 2011-2020, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**********************************************************************************/
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#include <stdint.h>
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#include <sys/auxv.h>
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/* If LASX extension instructions supported,
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* using core LOONGSON3R5
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* If only LSX extension instructions supported,
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* using core LOONGSON2K1000
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* If neither LASX nor LSX extension instructions supported,
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* using core LOONGSONGENERIC (As far as I know, there is no such
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* CPU yet)
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*/
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#define CPU_GENERIC 0
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#define CPU_LOONGSON3R5 1
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#define CPU_LOONGSON2K1000 2
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#define LA_HWCAP_LSX (1<<4)
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#define LA_HWCAP_LASX (1<<5)
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static char *cpuname[] = {
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"LOONGSONGENERIC",
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"LOONGSON3R5",
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"LOONGSON2K1000"
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};
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static char *cpuname_lower[] = {
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"loongsongeneric",
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"loongson3r5",
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"loongson2k1000"
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};
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int detect(void) {
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#ifdef __linux
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int flag = (int)getauxval(AT_HWCAP);
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if (flag & LA_HWCAP_LASX)
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return CPU_LOONGSON3R5;
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else if (flag & LA_HWCAP_LSX)
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return CPU_LOONGSON2K1000;
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else
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return CPU_GENERIC;
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#endif
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return CPU_GENERIC;
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}
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char *get_corename(void) {
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return cpuname[detect()];
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}
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void get_architecture(void) {
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printf("LOONGARCH64");
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}
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void get_subarchitecture(void) {
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int d = detect();
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printf("%s", cpuname[d]);
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}
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void get_subdirname(void) {
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printf("loongarch64");
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}
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void get_cpuconfig(void) {
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int d = detect();
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switch (d) {
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case CPU_LOONGSON3R5:
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printf("#define LOONGSON3R5\n");
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printf("#define L1_DATA_SIZE 65536\n");
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printf("#define L1_DATA_LINESIZE 64\n");
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printf("#define L2_SIZE 1048576\n");
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printf("#define L2_LINESIZE 64\n");
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printf("#define DTB_DEFAULT_ENTRIES 64\n");
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printf("#define DTB_SIZE 4096\n");
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printf("#define L2_ASSOCIATIVE 16\n");
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break;
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case CPU_LOONGSON2K1000:
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printf("#define LOONGSON2K1000\n");
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printf("#define L1_DATA_SIZE 65536\n");
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printf("#define L1_DATA_LINESIZE 64\n");
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printf("#define L2_SIZE 262144\n");
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printf("#define L2_LINESIZE 64\n");
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printf("#define DTB_DEFAULT_ENTRIES 64\n");
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printf("#define DTB_SIZE 4096\n");
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printf("#define L2_ASSOCIATIVE 16\n");
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break;
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default:
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printf("#define LOONGSONGENERIC\n");
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printf("#define L1_DATA_SIZE 65536\n");
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printf("#define L1_DATA_LINESIZE 64\n");
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printf("#define L2_SIZE 262144\n");
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printf("#define L2_LINESIZE 64\n");
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printf("#define DTB_DEFAULT_ENTRIES 64\n");
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printf("#define DTB_SIZE 4096\n");
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printf("#define L2_ASSOCIATIVE 16\n");
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break;
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}
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}
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void get_libname(void){
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int d = detect();
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printf("%s", cpuname_lower[d]);
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}
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