1 files changed, 43 insertions, 0 deletions
diff --git a/tools/power/cpupower/utils/helpers/misc.c b/tools/power/cpupower/utils/helpers/misc.c
new file mode 100644
index 000000000..80fdf55f4
--- /dev/null
+++ b/tools/power/cpupower/utils/helpers/misc.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0
+#if defined(__i386__) || defined(__x86_64__)
+
+#include "helpers/helpers.h"
+
+#define MSR_AMD_HWCR	0xc0010015
+
+int cpufreq_has_boost_support(unsigned int cpu, int *support, int *active,
+			int *states)
+{
+	struct cpupower_cpu_info cpu_info;
+	int ret;
+	unsigned long long val;
+
+	*support = *active = *states = 0;
+
+	ret = get_cpu_info(&cpu_info);
+	if (ret)
+		return ret;
+
+	if (cpupower_cpu_info.caps & CPUPOWER_CAP_AMD_CBP) {
+		*support = 1;
+
+		/* AMD Family 0x17 does not utilize PCI D18F4 like prior
+		 * families and has no fixed discrete boost states but
+		 * has Hardware determined variable increments instead.
+		 */
+
+		if (cpu_info.family == 0x17) {
+			if (!read_msr(cpu, MSR_AMD_HWCR, &val)) {
+				if (!(val & CPUPOWER_AMD_CPBDIS))
+					*active = 1;
+			}
+		} else {
+			ret = amd_pci_get_num_boost_states(active, states);
+			if (ret)
+				return ret;
+		}
+	} else if (cpupower_cpu_info.caps & CPUPOWER_CAP_INTEL_IDA)
+		*support = *active = 1;
+	return 0;
+}
+#endif /* #if defined(__i386__) || defined(__x86_64__) */