cpuid_zarch.c

/**************************************************************************
  Copyright (c) 2016, The OpenBLAS Project
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  its contributors may be used to endorse or promote products
  derived from this software without specific prior written permission.
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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#include <string.h>

#define CPU_GENERIC     0
#define CPU_Z13         1
#define CPU_Z14         2
#define CPU_Z15         3

static char *cpuname[] = {
  "ZARCH_GENERIC",
  "Z13",
  "Z14",
  "Z15"
};

static char *cpuname_lower[] = {
  "zarch_generic",
  "z13",
  "z14",
  "z15"
};

int detect(void)
{
  FILE *infile;
  char buffer[512], *p;

  p = (char *)NULL;
  infile = fopen("/proc/sysinfo", "r");
  while (fgets(buffer, sizeof(buffer), infile)){
    if (!strncmp("Type", buffer, 4)){
        p = strchr(buffer, ':') + 2;
#if 0
        fprintf(stderr, "%s\n", p);
#endif
        break;
      }
  }

  fclose(infile);

  if (strstr(p, "2964")) return CPU_Z13;
  if (strstr(p, "2965")) return CPU_Z13;
  if (strstr(p, "3906")) return CPU_Z14;
  if (strstr(p, "3907")) return CPU_Z14;
  if (strstr(p, "8561")) return CPU_Z14;        // fallback z15 to z14
  if (strstr(p, "8562")) return CPU_Z14;        // fallback z15 to z14

  return CPU_GENERIC;
}

void get_libname(void)
{

	int d = detect();
	printf("%s", cpuname_lower[d]);
}

char *get_corename(void)
{
	return cpuname[detect()];
}

void get_architecture(void)
{
	printf("ZARCH");
}

void get_subarchitecture(void)
{
	int d = detect();
	printf("%s", cpuname[d]);
}

void get_subdirname(void)
{
	printf("zarch");
}


void get_cpuconfig(void)
{

	int d = detect();
	switch (d){
	case CPU_GENERIC:
	  printf("#define ZARCH_GENERIC\n");
 	  printf("#define DTB_DEFAULT_ENTRIES 64\n");
	  break;
	case CPU_Z13:
	  printf("#define Z13\n");
	  printf("#define DTB_DEFAULT_ENTRIES 64\n");
	  break;
	case CPU_Z14:
	  printf("#define Z14\n");
	  printf("#define L1_DATA_SIZE 131072\n");
	  printf("#define L1_DATA_LINESIZE 256\n");
	  printf("#define L1_DATA_ASSOCIATIVE 8\n");
	  printf("#define L2_SIZE 4194304\n");
	  printf("#define L2_LINESIZE 256\n");
	  printf("#define L2_ASSOCIATIVE 8\n");
	  printf("#define DTB_DEFAULT_ENTRIES 64\n");
	  printf("#define DTB_SIZE 4096\n");
	  break;
	}
}