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--- tsc.c.orig 2016-02-10 18:38:43 UTC
+++ tsc.c
@@ -15,6 +15,12 @@
on your Linux system; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#define _GNU_SOURCE 1
+#ifdef __FreeBSD__
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <machine/cpufunc.h>
+#include <machine/specialreg.h>
+#endif
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
@@ -46,6 +52,7 @@ static int fmt_tsc(char **buf, u64 tsc,
return 0;
}
+#ifdef __Linux__
static double cpufreq_mhz(int cpu, double infomhz)
{
double mhz;
@@ -68,12 +75,29 @@ static double cpufreq_mhz(int cpu, doubl
fclose(f);
return mhz;
}
+#endif
+
+#ifdef __FreeBSD__
+static double cpufreq_mhz(int cpu, double infomhz)
+{
+ double mhz;
+ uint64_t freq;
+ size_t len;
+
+ len = sizeof(freq);
+ if (sysctlbyname("machdep.tsc_freq", &freq, &len, NULL, 0) < 0)
+ return infomhz;
+ mhz = freq / 1000000.0;
+ return mhz;
+}
+#endif
int decode_tsc_forced(char **buf, double mhz, u64 tsc)
{
return fmt_tsc(buf, tsc, mhz);
}
+#ifdef __Linux__
static int deep_sleep_states(int cpu)
{
int ret;
@@ -132,6 +156,41 @@ static int tsc_reliable(int cputype, int
return 0;
return 1;
}
+#endif
+
+#ifdef __FreeBSD__
+/* Try to figure out if this CPU has a somewhat reliable TSC clock */
+static int tsc_reliable(int cputype, int cpunum)
+{
+ u_int regs[4];
+ u_int cpu_id, amd_pminfo;
+
+ if (cputype != CPU_K8 && !is_intel_cpu(cputype))
+ return 0;
+
+ do_cpuid(0, regs);
+ cpu_id = regs[1];
+ do_cpuid(0x80000000, regs);
+ if (regs[0] >= 0x80000007) {
+ do_cpuid(0x80000007, regs);
+ amd_pminfo = regs[3];
+ } else
+ amd_pminfo = 0;
+
+ if (amd_pminfo & AMDPM_TSC_INVARIANT)
+ return 1;
+ if (is_intel_cpu(cputype)) {
+ if (CPUID_TO_FAMILY(cpu_id) >= 0x10 ||
+ cpu_id == 0x60fb2)
+ return 1;
+ } else if ((CPUID_TO_FAMILY(cpu_id) == 0x6 &&
+ CPUID_TO_MODEL(cpu_id) >= 0xe) ||
+ (CPUID_TO_FAMILY(cpu_id) == 0xf && CPUID_TO_MODEL(cpu_id) >= 0x3))
+ return 1;
+
+ return 0;
+}
+#endif
int decode_tsc_current(char **buf, int cpunum, enum cputype cputype, double mhz,
unsigned long long tsc)
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