mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-12 03:26:26 +00:00
tools/power/x86/intel-speed-select: Add check for CascadeLake-N models
Three CascadeLake-N models (6252N, 6230N, and 5218N) have SST-PBF support. Return an error if the CascadeLake processor is not one of these specific models. Signed-off-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
parent
210369dc73
commit
1c1d935c84
1 changed files with 41 additions and 2 deletions
|
@ -23,6 +23,7 @@ static int debug_flag;
|
||||||
static FILE *outf;
|
static FILE *outf;
|
||||||
|
|
||||||
static int cpu_model;
|
static int cpu_model;
|
||||||
|
static int cpu_stepping;
|
||||||
|
|
||||||
#define MAX_CPUS_IN_ONE_REQ 64
|
#define MAX_CPUS_IN_ONE_REQ 64
|
||||||
static short max_target_cpus;
|
static short max_target_cpus;
|
||||||
|
@ -72,7 +73,16 @@ void debug_printf(const char *format, ...)
|
||||||
va_end(args);
|
va_end(args);
|
||||||
}
|
}
|
||||||
|
|
||||||
static void update_cpu_model(void)
|
|
||||||
|
int is_clx_n_platform(void)
|
||||||
|
{
|
||||||
|
if (cpu_model == 0x55)
|
||||||
|
if (cpu_stepping == 0x6 || cpu_stepping == 0x7)
|
||||||
|
return 1;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int update_cpu_model(void)
|
||||||
{
|
{
|
||||||
unsigned int ebx, ecx, edx;
|
unsigned int ebx, ecx, edx;
|
||||||
unsigned int fms, family;
|
unsigned int fms, family;
|
||||||
|
@ -82,6 +92,33 @@ static void update_cpu_model(void)
|
||||||
cpu_model = (fms >> 4) & 0xf;
|
cpu_model = (fms >> 4) & 0xf;
|
||||||
if (family == 6 || family == 0xf)
|
if (family == 6 || family == 0xf)
|
||||||
cpu_model += ((fms >> 16) & 0xf) << 4;
|
cpu_model += ((fms >> 16) & 0xf) << 4;
|
||||||
|
|
||||||
|
cpu_stepping = fms & 0xf;
|
||||||
|
/* only three CascadeLake-N models are supported */
|
||||||
|
if (is_clx_n_platform()) {
|
||||||
|
FILE *fp;
|
||||||
|
size_t n = 0;
|
||||||
|
char *line = NULL;
|
||||||
|
int ret = 1;
|
||||||
|
|
||||||
|
fp = fopen("/proc/cpuinfo", "r");
|
||||||
|
if (!fp)
|
||||||
|
err(-1, "cannot open /proc/cpuinfo\n");
|
||||||
|
|
||||||
|
while (getline(&line, &n, fp) > 0) {
|
||||||
|
if (strstr(line, "model name")) {
|
||||||
|
if (strstr(line, "6252N") ||
|
||||||
|
strstr(line, "6230N") ||
|
||||||
|
strstr(line, "5218N"))
|
||||||
|
ret = 0;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
free(line);
|
||||||
|
fclose(fp);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Open a file, and exit on failure */
|
/* Open a file, and exit on failure */
|
||||||
|
@ -1956,7 +1993,9 @@ static void cmdline(int argc, char **argv)
|
||||||
fprintf(stderr, "Feature name and|or command not specified\n");
|
fprintf(stderr, "Feature name and|or command not specified\n");
|
||||||
exit(0);
|
exit(0);
|
||||||
}
|
}
|
||||||
update_cpu_model();
|
ret = update_cpu_model();
|
||||||
|
if (ret)
|
||||||
|
err(-1, "Invalid CPU model (%d)\n", cpu_model);
|
||||||
printf("Intel(R) Speed Select Technology\n");
|
printf("Intel(R) Speed Select Technology\n");
|
||||||
printf("Executing on CPU model:%d[0x%x]\n", cpu_model, cpu_model);
|
printf("Executing on CPU model:%d[0x%x]\n", cpu_model, cpu_model);
|
||||||
set_max_cpu_num();
|
set_max_cpu_num();
|
||||||
|
|
Loading…
Reference in a new issue