Commit 1ba148ae authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Andy Shevchenko
Browse files

tools/power/x86/intel-speed-select: Enhance --info option 



Add additional information, which will allow user to detect available
features. This will allow users to check presence of features before
continue to test.
A sample output:

$sudo ./intel-speed-select --info

Intel(R) Speed Select Technology
Executing on CPU model:85[0x55]
Platform: API version : 1
Platform: Driver version : 1
Platform: mbox supported : 1
Platform: mmio supported : 0
Intel(R) SST-PP (feature perf-profile) is not supported
Only performance level 0 (base level) is present
TDP level change control is locked
Intel(R) SST-TF (feature turbo-freq) is supported
Intel(R) SST-BF (feature base-freq) is supported
Intel(R) SST-CP (feature core-power) is supported

Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
parent addd116d

tools/power/x86/intel-speed-select/isst-config.c

+74 −0
Original line number Diff line number Diff line
@@ -846,12 +846,85 @@ static int isst_fill_platform_info(void) 
	return 0;

}



static void isst_print_extended_platform_info(void)

{

	int cp_state, cp_cap, fact_support = 0, pbf_support = 0;

	struct isst_pkg_ctdp_level_info ctdp_level;

	struct isst_pkg_ctdp pkg_dev;

	int ret, i, j;

	FILE *filep;



	for (i = 0; i < 256; ++i) {

		char path[256];



		snprintf(path, sizeof(path),

			 "/sys/devices/system/cpu/cpu%d/topology/thread_siblings", i);

		filep = fopen(path, "r");

		if (filep)

			break;

	}



	if (!filep)

		return;



	fclose(filep);



	ret = isst_get_ctdp_levels(i, &pkg_dev);

	if (ret)

		return;



	if (pkg_dev.enabled) {

		fprintf(outf, "Intel(R) SST-PP (feature perf-profile) is supported\n");

	} else {

		fprintf(outf, "Intel(R) SST-PP (feature perf-profile) is not supported\n");

		fprintf(outf, "Only performance level 0 (base level) is present\n");

	}



	if (pkg_dev.locked)

		fprintf(outf, "TDP level change control is locked\n");

	else

		fprintf(outf, "TDP level change control is unlocked, max level: %d \n", pkg_dev.levels);



	for (j = 0; j <= pkg_dev.levels; ++j) {

		ret = isst_get_ctdp_control(i, j, &ctdp_level);

		if (ret)

			continue;



		if (!fact_support && ctdp_level.fact_support)

			fact_support = 1;



		if (!pbf_support && ctdp_level.pbf_support)

			pbf_support = 1;

	}



	if (fact_support)

		fprintf(outf, "Intel(R) SST-TF (feature turbo-freq) is supported\n");

	else

		fprintf(outf, "Intel(R) SST-TF (feature turbo-freq) is not supported\n");



	if (pbf_support)

		fprintf(outf, "Intel(R) SST-BF (feature base-freq) is supported\n");

	else

		fprintf(outf, "Intel(R) SST-BF (feature base-freq) is not supported\n");



	ret = isst_read_pm_config(i, &cp_state, &cp_cap);

	if (cp_cap)

		fprintf(outf, "Intel(R) SST-CP (feature core-power) is supported\n");

	else

		fprintf(outf, "Intel(R) SST-CP (feature core-power) is not supported\n");

}



static void isst_print_platform_information(void)

{

	struct isst_if_platform_info platform_info;

	const char *pathname = "/dev/isst_interface";

	int fd;



	if (is_clx_n_platform()) {

		fprintf(stderr, "\nThis option in not supported on this platform\n");

		exit(0);

	}



	fd = open(pathname, O_RDWR);

	if (fd < 0)

		err(-1, "%s open failed", pathname);
@@ -867,6 +940,7 @@ static void isst_print_platform_information(void) 
			platform_info.mbox_supported);

		fprintf(outf, "Platform: mmio supported : %d\n",

			platform_info.mmio_supported);

		isst_print_extended_platform_info();

	}



	close(fd);

tools/power/x86/intel-speed-select/isst.h

+2 −0
Original line number Diff line number Diff line
@@ -196,6 +196,8 @@ extern int isst_send_msr_command(unsigned int cpu, unsigned int command, 
				 int write, unsigned long long *req_resp);



extern int isst_get_ctdp_levels(int cpu, struct isst_pkg_ctdp *pkg_dev);

extern int isst_get_ctdp_control(int cpu, int config_index,

				 struct isst_pkg_ctdp_level_info *ctdp_level);

extern int isst_get_coremask_info(int cpu, int config_index,

			   struct isst_pkg_ctdp_level_info *ctdp_level);

extern int isst_get_process_ctdp(int cpu, int tdp_level,

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