129 lines
3.7 KiB
C
129 lines
3.7 KiB
C
/*******************************************************************************
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Copyright (c) 2022, 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 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 OPENBLAS PROJECT 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 "common.h"
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extern gotoblas_t gotoblas_LOONGSON3R5;
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extern gotoblas_t gotoblas_LOONGSON2K1000;
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extern gotoblas_t gotoblas_LOONGSONGENERIC;
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extern void openblas_warning(int verbose, const char * msg);
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#define NUM_CORETYPES 3
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static char *corename[] = {
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"loongson3r5",
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"loongson2k1000",
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"loongsongeneric",
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"unknown"
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};
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char *gotoblas_corename(void) {
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if (gotoblas == &gotoblas_LOONGSON3R5) return corename[0];
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if (gotoblas == &gotoblas_LOONGSON2K1000) return corename[1];
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if (gotoblas == &gotoblas_LOONGSONGENERIC) return corename[2];
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return corename[NUM_CORETYPES];
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}
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static gotoblas_t *force_coretype(char *coretype) {
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int i;
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int found = -1;
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char message[128];
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for ( i=0 ; i < NUM_CORETYPES; i++)
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{
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if (!strncasecmp(coretype, corename[i], 20))
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{
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found = i;
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break;
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}
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}
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switch (found)
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{
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case 0: return (&gotoblas_LOONGSON3R5);
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case 1: return (&gotoblas_LOONGSON2K1000);
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case 2: return (&gotoblas_LOONGSONGENERIC);
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}
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snprintf(message, 128, "Core not found: %s\n", coretype);
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openblas_warning(1, message);
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return NULL;
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}
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#define LASX_MASK 1<<7
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#define LSX_MASK 1<<6
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#define LOONGARCH_CFG2 0x02
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static gotoblas_t *get_coretype(void) {
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int ret = 0;
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__asm__ volatile (
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"cpucfg %0, %1 \n\t"
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: "+&r"(ret)
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: "r"(LOONGARCH_CFG2)
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);
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if (ret & LASX_MASK)
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return &gotoblas_LOONGSON3R5;
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else if (ret & LSX_MASK)
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return &gotoblas_LOONGSON2K1000;
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else
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return &gotoblas_LOONGSONGENERIC;
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}
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void gotoblas_dynamic_init(void) {
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char coremsg[128];
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char coren[22];
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char *p;
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if (gotoblas) return;
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p = getenv("OPENBLAS_CORETYPE");
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if ( p )
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{
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gotoblas = force_coretype(p);
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}
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else
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{
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gotoblas = get_coretype();
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}
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if (gotoblas && gotoblas->init) {
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strncpy(coren, gotoblas_corename(), 20);
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sprintf(coremsg, "Core: %s\n", coren);
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openblas_warning(2, coremsg);
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gotoblas -> init();
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} else {
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openblas_warning(0, "OpenBLAS : Architecture Initialization failed. No initialization function found.\n");
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exit(1);
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}
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}
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void gotoblas_dynamic_quit(void) {
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gotoblas = NULL;
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}
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