@@ -8,7 +8,10 @@
#include <pci/pci.h>
#include "helpers/helpers.h"
+#include "cpufreq.h"
+#include "acpi_cppc.h"
+/* ACPI P-States Helper Functions for AMD Processors ***************/
#define MSR_AMD_PSTATE_STATUS 0xc0010063
#define MSR_AMD_PSTATE 0xc0010064
#define MSR_AMD_PSTATE_LIMIT 0xc0010061
@@ -146,4 +149,31 @@ int amd_pci_get_num_boost_states(int *active, int *states)
pci_cleanup(pci_acc);
return 0;
}
+
+/* ACPI P-States Helper Functions for AMD Processors ***************/
+
+/* AMD P-States Helper Functions ***************/
+enum amd_pstate_value {
+ AMD_PSTATE_HIGHEST_PERF,
+ AMD_PSTATE_MAX_FREQ,
+ AMD_PSTATE_LOWEST_NONLINEAR_FREQ,
+ MAX_AMD_PSTATE_VALUE_READ_FILES,
+};
+
+static const char *amd_pstate_value_files[MAX_AMD_PSTATE_VALUE_READ_FILES] = {
+ [AMD_PSTATE_HIGHEST_PERF] = "amd_pstate_highest_perf",
+ [AMD_PSTATE_MAX_FREQ] = "amd_pstate_max_freq",
+ [AMD_PSTATE_LOWEST_NONLINEAR_FREQ] = "amd_pstate_lowest_nonlinear_freq",
+};
+
+static unsigned long amd_pstate_get_data(unsigned int cpu,
+ enum amd_pstate_value value)
+{
+ return cpufreq_get_sysfs_value_from_table(cpu,
+ amd_pstate_value_files,
+ value,
+ MAX_AMD_PSTATE_VALUE_READ_FILES);
+}
+
+/* AMD P-States Helper Functions ***************/
#endif /* defined(__i386__) || defined(__x86_64__) */
Introduce the marco definitions and access helper function for amd-pstate sysfs interfaces such as each performance goals and frequency levels in amd helper file. They will be used to read the sysfs attribute from amd-pstate cpufreq driver for cpupower utilities. Signed-off-by: Huang Rui <ray.huang@amd.com> --- tools/power/cpupower/utils/helpers/amd.c | 30 ++++++++++++++++++++++++ 1 file changed, 30 insertions(+)