[PATCH v3 0/6] Add CascadeLake-N Support

[PATCH v3 0/6] Add CascadeLake-N Support

[Srinivas Pandruvada]

Add support for SST-BF on CascadeLake-N support.  The CascadeLake-N
processor only support SST-BF and not other SST functionality.

v3:
Fix crash due to geline
Fix display to perf-profile info and base-freq info command
Fix output for coremask
Fix base frequency CPU list. This should be displayed for a package
Auto mode support for base-freq enable/disable
One of the patch for config only change folded to next one where it is
used.

The patch 1 has nothing to do with the CLX-N. It saves some bytes in the
size.

v2: Updated with comments from Srinivas (use common clx_n_* function names,
common is_clx_n_platform() function call to identify CascadeLake-N)


Prarit Bhargava (6):
  tools/power/x86/intel-speed-select: Add int argument to command
    functions
  tools/power/x86/intel-speed-select: Make process_command generic
  tools/power/x86/intel-speed-select: Add check for CascadeLake-N models
  tools/power/x86/intel-speed-select: Implement CascadeLake-N help and
    command functions structures
  tools/power/x86/intel-speed-select: Implement 'perf-profile info' on
    CascadeLake-N
  tools/power/x86/intel-speed-select: Implement base-freq commands on
    CascadeLake-N

 .../x86/intel-speed-select/isst-config.c      | 523 ++++++++++++------
 .../x86/intel-speed-select/isst-display.c     |  14 +-
 tools/power/x86/intel-speed-select/isst.h     |   3 +
 3 files changed, 383 insertions(+), 157 deletions(-)

-- 
2.17.2

[PATCH v3 1/6] tools/power/x86/intel-speed-select: Add int argument to command functions

[Srinivas Pandruvada]

From: Prarit Bhargava <prarit@redhat.com>

The current code structure has similar but separate command functions for
the enable and disable operations.  This can be improved by adding an int
argument to the command function structure, and interpreting 1 as enable
and 0 as disable.  This change results in the removal of the disable
command functions.

Add int argument to the command function structure.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
 .../x86/intel-speed-select/isst-config.c      | 213 +++++++-----------
 1 file changed, 86 insertions(+), 127 deletions(-)

diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index e1ca7c5b8037..4927aebee306 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -11,7 +11,8 @@
 struct process_cmd_struct {
 	char *feature;
 	char *command;
-	void (*process_fn)(void);
+	void (*process_fn)(int arg);
+	int arg;
 };
 
 static const char *version_str = "v1.0";
@@ -682,7 +683,7 @@ static void exec_on_get_ctdp_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 }
 
 #define _get_tdp_level(desc, suffix, object, help)                                \
-	static void get_tdp_##object(void)                                        \
+	static void get_tdp_##object(int arg)                                    \
 	{                                                                         \
 		struct isst_pkg_ctdp ctdp;                                        \
 \
@@ -728,7 +729,7 @@ static void dump_isst_config_for_cpu(int cpu, void *arg1, void *arg2,
 	}
 }
 
-static void dump_isst_config(void)
+static void dump_isst_config(int arg)
 {
 	if (cmd_help) {
 		fprintf(stderr,
@@ -791,7 +792,7 @@ static void set_tdp_level_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 	}
 }
 
-static void set_tdp_level(void)
+static void set_tdp_level(int arg)
 {
 	if (cmd_help) {
 		fprintf(stderr, "Set Config TDP level\n");
@@ -831,7 +832,7 @@ static void dump_pbf_config_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 	}
 }
 
-static void dump_pbf_config(void)
+static void dump_pbf_config(int arg)
 {
 	if (cmd_help) {
 		fprintf(stderr,
@@ -1079,48 +1080,33 @@ static void set_pbf_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 				    ret);
 }
 
-static void set_pbf_enable(void)
+static void set_pbf_enable(int arg)
 {
-	int status = 1;
+	int enable = arg;
 
 	if (cmd_help) {
-		fprintf(stderr,
-			"Enable Intel Speed Select Technology base frequency feature\n");
-		fprintf(stderr,
-			"\tOptional Arguments: -a|--auto : Use priority of cores to set core-power associations\n");
-
-		exit(0);
-	}
-
-	isst_ctdp_display_information_start(outf);
-	if (max_target_cpus)
-		for_each_online_target_cpu_in_set(set_pbf_for_cpu, NULL, NULL,
-						  NULL, &status);
-	else
-		for_each_online_package_in_set(set_pbf_for_cpu, NULL, NULL,
-					       NULL, &status);
-	isst_ctdp_display_information_end(outf);
-}
-
-static void set_pbf_disable(void)
-{
-	int status = 0;
+		if (enable) {
+			fprintf(stderr,
+				"Enable Intel Speed Select Technology base frequency feature\n");
+			fprintf(stderr,
+				"\tOptional Arguments: -a|--auto : Use priority of cores to set core-power associations\n");
+		} else {
 
-	if (cmd_help) {
-		fprintf(stderr,
-			"Disable Intel Speed Select Technology base frequency feature\n");
-		fprintf(stderr,
-			"\tOptional Arguments: -a|--auto : Also disable core-power associations\n");
+			fprintf(stderr,
+				"Disable Intel Speed Select Technology base frequency feature\n");
+			fprintf(stderr,
+				"\tOptional Arguments: -a|--auto : Also disable core-power associations\n");
+		}
 		exit(0);
 	}
 
 	isst_ctdp_display_information_start(outf);
 	if (max_target_cpus)
 		for_each_online_target_cpu_in_set(set_pbf_for_cpu, NULL, NULL,
-						  NULL, &status);
+						  NULL, &enable);
 	else
 		for_each_online_package_in_set(set_pbf_for_cpu, NULL, NULL,
-					       NULL, &status);
+					       NULL, &enable);
 	isst_ctdp_display_information_end(outf);
 }
 
@@ -1138,7 +1124,7 @@ static void dump_fact_config_for_cpu(int cpu, void *arg1, void *arg2,
 					      fact_avx, &fact_info);
 }
 
-static void dump_fact_config(void)
+static void dump_fact_config(int arg)
 {
 	if (cmd_help) {
 		fprintf(stderr,
@@ -1213,31 +1199,41 @@ static void set_fact_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 	}
 }
 
-static void set_fact_enable(void)
+static void set_fact_enable(int arg)
 {
-	int status = 1, i, ret;
+	int i, ret, enable = arg;
 
 	if (cmd_help) {
-		fprintf(stderr,
-			"Enable Intel Speed Select Technology Turbo frequency feature\n");
-		fprintf(stderr,
-			"Optional: -t|--trl : Specify turbo ratio limit\n");
-		fprintf(stderr,
-			"\tOptional Arguments: -a|--auto : Designate specified target CPUs with");
-		fprintf(stderr, "-C|--cpu option as as high priority using core-power feature\n");
+		if (enable) {
+			fprintf(stderr,
+				"Enable Intel Speed Select Technology Turbo frequency feature\n");
+			fprintf(stderr,
+				"Optional: -t|--trl : Specify turbo ratio limit\n");
+			fprintf(stderr,
+				"\tOptional Arguments: -a|--auto : Designate specified target CPUs with");
+			fprintf(stderr,
+				"-C|--cpu option as as high priority using core-power feature\n");
+		} else {
+			fprintf(stderr,
+				"Disable Intel Speed Select Technology turbo frequency feature\n");
+			fprintf(stderr,
+				"Optional: -t|--trl : Specify turbo ratio limit\n");
+			fprintf(stderr,
+				"\tOptional Arguments: -a|--auto : Also disable core-power associations\n");
+		}
 		exit(0);
 	}
 
 	isst_ctdp_display_information_start(outf);
 	if (max_target_cpus)
 		for_each_online_target_cpu_in_set(set_fact_for_cpu, NULL, NULL,
-						  NULL, &status);
+						  NULL, &enable);
 	else
 		for_each_online_package_in_set(set_fact_for_cpu, NULL, NULL,
-					       NULL, &status);
+					       NULL, &enable);
 	isst_ctdp_display_information_end(outf);
 
-	if (auto_mode) {
+	if (enable && auto_mode) {
 		/*
 		 * When we adjust CLOS param, we have to set for siblings also.
 		 * So for the each user specified CPU, also add the sibling
@@ -1315,30 +1311,6 @@ static void set_fact_enable(void)
 
 }
 
-static void set_fact_disable(void)
-{
-	int status = 0;
-
-	if (cmd_help) {
-		fprintf(stderr,
-			"Disable Intel Speed Select Technology turbo frequency feature\n");
-		fprintf(stderr,
-			"Optional: -t|--trl : Specify turbo ratio limit\n");
-		fprintf(stderr,
-			"\tOptional Arguments: -a|--auto : Also disable core-power associations\n");
-		exit(0);
-	}
-
-	isst_ctdp_display_information_start(outf);
-	if (max_target_cpus)
-		for_each_online_target_cpu_in_set(set_fact_for_cpu, NULL, NULL,
-						  NULL, &status);
-	else
-		for_each_online_package_in_set(set_fact_for_cpu, NULL, NULL,
-					       NULL, &status);
-	isst_ctdp_display_information_end(outf);
-}
-
 static void enable_clos_qos_config(int cpu, void *arg1, void *arg2, void *arg3,
 				   void *arg4)
 {
@@ -1357,19 +1329,25 @@ static void enable_clos_qos_config(int cpu, void *arg1, void *arg2, void *arg3,
 				    ret);
 }
 
-static void set_clos_enable(void)
+static void set_clos_enable(int arg)
 {
-	int status = 1;
+	int enable = arg;
 
 	if (cmd_help) {
-		fprintf(stderr, "Enable core-power for a package/die\n");
-		fprintf(stderr,
-			"\tClos Enable: Specify priority type with [--priority|-p]\n");
-		fprintf(stderr, "\t\t 0: Proportional, 1: Ordered\n");
+		if (enable) {
+			fprintf(stderr,
+				"Enable core-power for a package/die\n");
+			fprintf(stderr,
+				"\tClos Enable: Specify priority type with [--priority|-p]\n");
+			fprintf(stderr, "\t\t 0: Proportional, 1: Ordered\n");
+		} else {
+			fprintf(stderr,
+				"Disable core-power: [No command arguments are required]\n");
+		}
 		exit(0);
 	}
 
-	if (cpufreq_sysfs_present()) {
+	if (enable && cpufreq_sysfs_present()) {
 		fprintf(stderr,
 			"cpufreq subsystem and core-power enable will interfere with each other!\n");
 	}
@@ -1377,30 +1355,10 @@ static void set_clos_enable(void)
 	isst_ctdp_display_information_start(outf);
 	if (max_target_cpus)
 		for_each_online_target_cpu_in_set(enable_clos_qos_config, NULL,
-						  NULL, NULL, &status);
-	else
-		for_each_online_package_in_set(enable_clos_qos_config, NULL,
-					       NULL, NULL, &status);
-	isst_ctdp_display_information_end(outf);
-}
-
-static void set_clos_disable(void)
-{
-	int status = 0;
-
-	if (cmd_help) {
-		fprintf(stderr,
-			"Disable core-power: [No command arguments are required]\n");
-		exit(0);
-	}
-
-	isst_ctdp_display_information_start(outf);
-	if (max_target_cpus)
-		for_each_online_target_cpu_in_set(enable_clos_qos_config, NULL,
-						  NULL, NULL, &status);
+						  NULL, NULL, &enable);
 	else
 		for_each_online_package_in_set(enable_clos_qos_config, NULL,
-					       NULL, NULL, &status);
+					       NULL, NULL, &enable);
 	isst_ctdp_display_information_end(outf);
 }
 
@@ -1418,7 +1376,7 @@ static void dump_clos_config_for_cpu(int cpu, void *arg1, void *arg2,
 					      &clos_config);
 }
 
-static void dump_clos_config(void)
+static void dump_clos_config(int arg)
 {
 	if (cmd_help) {
 		fprintf(stderr,
@@ -1454,7 +1412,7 @@ static void get_clos_info_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 		isst_clos_display_clos_information(cpu, outf, enable, prio_type);
 }
 
-static void dump_clos_info(void)
+static void dump_clos_info(int arg)
 {
 	if (cmd_help) {
 		fprintf(stderr,
@@ -1497,7 +1455,7 @@ static void set_clos_config_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 		isst_display_result(cpu, outf, "core-power", "config", ret);
 }
 
-static void set_clos_config(void)
+static void set_clos_config(int arg)
 {
 	if (cmd_help) {
 		fprintf(stderr,
@@ -1561,7 +1519,7 @@ static void set_clos_assoc_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 		isst_display_result(cpu, outf, "core-power", "assoc", ret);
 }
 
-static void set_clos_assoc(void)
+static void set_clos_assoc(int arg)
 {
 	if (cmd_help) {
 		fprintf(stderr, "Associate a clos id to a CPU\n");
@@ -1595,7 +1553,7 @@ static void get_clos_assoc_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 		isst_clos_display_assoc_information(cpu, outf, clos);
 }
 
-static void get_clos_assoc(void)
+static void get_clos_assoc(int arg)
 {
 	if (cmd_help) {
 		fprintf(stderr, "Get associate clos id to a CPU\n");
@@ -1616,26 +1574,27 @@ static void get_clos_assoc(void)
 }
 
 static struct process_cmd_struct isst_cmds[] = {
-	{ "perf-profile", "get-lock-status", get_tdp_locked },
-	{ "perf-profile", "get-config-levels", get_tdp_levels },
-	{ "perf-profile", "get-config-version", get_tdp_version },
-	{ "perf-profile", "get-config-enabled", get_tdp_enabled },
-	{ "perf-profile", "get-config-current-level", get_tdp_current_level },
-	{ "perf-profile", "set-config-level", set_tdp_level },
-	{ "perf-profile", "info", dump_isst_config },
-	{ "base-freq", "info", dump_pbf_config },
-	{ "base-freq", "enable", set_pbf_enable },
-	{ "base-freq", "disable", set_pbf_disable },
-	{ "turbo-freq", "info", dump_fact_config },
-	{ "turbo-freq", "enable", set_fact_enable },
-	{ "turbo-freq", "disable", set_fact_disable },
-	{ "core-power", "info", dump_clos_info },
-	{ "core-power", "enable", set_clos_enable },
-	{ "core-power", "disable", set_clos_disable },
-	{ "core-power", "config", set_clos_config },
-	{ "core-power", "get-config", dump_clos_config },
-	{ "core-power", "assoc", set_clos_assoc },
-	{ "core-power", "get-assoc", get_clos_assoc },
+	{ "perf-profile", "get-lock-status", get_tdp_locked, 0 },
+	{ "perf-profile", "get-config-levels", get_tdp_levels, 0 },
+	{ "perf-profile", "get-config-version", get_tdp_version, 0 },
+	{ "perf-profile", "get-config-enabled", get_tdp_enabled, 0 },
+	{ "perf-profile", "get-config-current-level", get_tdp_current_level,
+	 0 },
+	{ "perf-profile", "set-config-level", set_tdp_level, 0 },
+	{ "perf-profile", "info", dump_isst_config, 0 },
+	{ "base-freq", "info", dump_pbf_config, 0 },
+	{ "base-freq", "enable", set_pbf_enable, 1 },
+	{ "base-freq", "disable", set_pbf_enable, 0 },
+	{ "turbo-freq", "info", dump_fact_config, 0 },
+	{ "turbo-freq", "enable", set_fact_enable, 1 },
+	{ "turbo-freq", "disable", set_fact_enable, 0 },
+	{ "core-power", "info", dump_clos_info, 0 },
+	{ "core-power", "enable", set_clos_enable, 1 },
+	{ "core-power", "disable", set_clos_enable, 0 },
+	{ "core-power", "config", set_clos_config, 0 },
+	{ "core-power", "get-config", dump_clos_config, 0 },
+	{ "core-power", "assoc", set_clos_assoc, 0 },
+	{ "core-power", "get-assoc", get_clos_assoc, 0 },
 	{ NULL, NULL, NULL }
 };
 
@@ -1884,7 +1843,7 @@ void process_command(int argc, char **argv)
 		if (!strcmp(isst_cmds[i].feature, feature) &&
 		    !strcmp(isst_cmds[i].command, cmd)) {
 			parse_cmd_args(argc, optind + 1, argv);
-			isst_cmds[i].process_fn();
+			isst_cmds[i].process_fn(isst_cmds[i].arg);
 			matched = 1;
 			break;
 		}
-- 
2.17.2

[PATCH v3 2/6] tools/power/x86/intel-speed-select: Make process_command generic

[Srinivas Pandruvada]

From: Prarit Bhargava <prarit@redhat.com>

Make the process_command take any help command and command list.  This
will make it easier to help commands and a command list for CascadeLake-N.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
 .../x86/intel-speed-select/isst-config.c      | 20 ++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 4927aebee306..907b79e16c68 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -1816,7 +1816,9 @@ static struct process_cmd_help_struct isst_help_cmds[] = {
 	{ NULL, NULL }
 };
 
-void process_command(int argc, char **argv)
+void process_command(int argc, char **argv,
+		     struct process_cmd_help_struct *help_cmds,
+		     struct process_cmd_struct *cmds)
 {
 	int i = 0, matched = 0;
 	char *feature = argv[optind];
@@ -1827,9 +1829,9 @@ void process_command(int argc, char **argv)
 
 	debug_printf("feature name [%s] command [%s]\n", feature, cmd);
 	if (!strcmp(cmd, "-h") || !strcmp(cmd, "--help")) {
-		while (isst_help_cmds[i].feature) {
-			if (!strcmp(isst_help_cmds[i].feature, feature)) {
-				isst_help_cmds[i].process_fn();
+		while (help_cmds[i].feature) {
+			if (!strcmp(help_cmds[i].feature, feature)) {
+				help_cmds[i].process_fn();
 				exit(0);
 			}
 			++i;
@@ -1839,11 +1841,11 @@ void process_command(int argc, char **argv)
 	create_cpu_map();
 
 	i = 0;
-	while (isst_cmds[i].feature) {
-		if (!strcmp(isst_cmds[i].feature, feature) &&
-		    !strcmp(isst_cmds[i].command, cmd)) {
+	while (cmds[i].feature) {
+		if (!strcmp(cmds[i].feature, feature) &&
+		    !strcmp(cmds[i].command, cmd)) {
 			parse_cmd_args(argc, optind + 1, argv);
-			isst_cmds[i].process_fn(isst_cmds[i].arg);
+			cmds[i].process_fn(cmds[i].arg);
 			matched = 1;
 			break;
 		}
@@ -1964,7 +1966,7 @@ static void cmdline(int argc, char **argv)
 	if (ret)
 		goto out;
 
-	process_command(argc, argv);
+	process_command(argc, argv, isst_help_cmds, isst_cmds);
 out:
 	free_cpu_set(present_cpumask);
 	free_cpu_set(target_cpumask);
-- 
2.17.2

[PATCH v3 3/6] tools/power/x86/intel-speed-select: Add check for CascadeLake-N models

[Srinivas Pandruvada]

From: Prarit Bhargava <prarit@redhat.com>

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>
---
 .../x86/intel-speed-select/isst-config.c      | 43 ++++++++++++++++++-
 1 file changed, 41 insertions(+), 2 deletions(-)

diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 907b79e16c68..67a866e2dac4 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -23,6 +23,7 @@ static int debug_flag;
 static FILE *outf;
 
 static int cpu_model;
+static int cpu_stepping;
 
 #define MAX_CPUS_IN_ONE_REQ 64
 static short max_target_cpus;
@@ -72,7 +73,16 @@ void debug_printf(const char *format, ...)
 	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 fms, family;
@@ -82,6 +92,33 @@ static void update_cpu_model(void)
 	cpu_model = (fms >> 4) & 0xf;
 	if (family == 6 || family == 0xf)
 		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 */
@@ -1956,7 +1993,9 @@ static void cmdline(int argc, char **argv)
 		fprintf(stderr, "Feature name and|or command not specified\n");
 		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("Executing on CPU model:%d[0x%x]\n", cpu_model, cpu_model);
 	set_max_cpu_num();
-- 
2.17.2

[PATCH v3 4/6] tools/power/x86/intel-speed-select: Implement CascadeLake-N help and command functions structures

[Srinivas Pandruvada]

From: Prarit Bhargava <prarit@redhat.com>

CascadeLake-N only supports SST-BF and needs some of the perf-profile
commands, and the base-freq commands.

Add help functions, and create an empty command structures (the functions
will be implemented later in this patchset).  Call these functions
when running on CascadeLake-N.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
 .../x86/intel-speed-select/isst-config.c      | 37 ++++++++++++++-----
 1 file changed, 27 insertions(+), 10 deletions(-)

diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 67a866e2dac4..449025c6ea46 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -1610,6 +1610,10 @@ static void get_clos_assoc(int arg)
 	isst_ctdp_display_information_end(outf);
 }
 
+static struct process_cmd_struct clx_n_cmds[] = {
+	{ NULL, NULL, NULL, 0 }
+};
+
 static struct process_cmd_struct isst_cmds[] = {
 	{ "perf-profile", "get-lock-status", get_tdp_locked, 0 },
 	{ "perf-profile", "get-config-levels", get_tdp_levels, 0 },
@@ -1798,12 +1802,15 @@ static void isst_help(void)
 		TDP, etc.\n");
 	printf("\nCommands : For feature=perf-profile\n");
 	printf("\tinfo\n");
-	printf("\tget-lock-status\n");
-	printf("\tget-config-levels\n");
-	printf("\tget-config-version\n");
-	printf("\tget-config-enabled\n");
-	printf("\tget-config-current-level\n");
-	printf("\tset-config-level\n");
+
+	if (!is_clx_n_platform()) {
+		printf("\tget-lock-status\n");
+		printf("\tget-config-levels\n");
+		printf("\tget-config-version\n");
+		printf("\tget-config-enabled\n");
+		printf("\tget-config-current-level\n");
+		printf("\tset-config-level\n");
+	}
 }
 
 static void pbf_help(void)
@@ -1853,6 +1860,12 @@ static struct process_cmd_help_struct isst_help_cmds[] = {
 	{ NULL, NULL }
 };
 
+static struct process_cmd_help_struct clx_n_help_cmds[] = {
+	{ "perf-profile", isst_help },
+	{ "base-freq", pbf_help },
+	{ NULL, NULL }
+};
+
 void process_command(int argc, char **argv,
 		     struct process_cmd_help_struct *help_cmds,
 		     struct process_cmd_struct *cmds)
@@ -2001,11 +2014,15 @@ static void cmdline(int argc, char **argv)
 	set_max_cpu_num();
 	set_cpu_present_cpu_mask();
 	set_cpu_target_cpu_mask();
-	ret = isst_fill_platform_info();
-	if (ret)
-		goto out;
 
-	process_command(argc, argv, isst_help_cmds, isst_cmds);
+	if (!is_clx_n_platform()) {
+		ret = isst_fill_platform_info();
+		if (ret)
+			goto out;
+		process_command(argc, argv, isst_help_cmds, isst_cmds);
+	} else {
+		process_command(argc, argv, clx_n_help_cmds, clx_n_cmds);
+	}
 out:
 	free_cpu_set(present_cpumask);
 	free_cpu_set(target_cpumask);
-- 
2.17.2

[PATCH v3 5/6] tools/power/x86/intel-speed-select: Implement 'perf-profile info' on CascadeLake-N

[Srinivas Pandruvada]

From: Prarit Bhargava <prarit@redhat.com>

Add functionality for "perf-profile info" on CascadeLake-N.

Sample output:
intel-speed-select perf-profile info
Intel(R) Speed Select Technology
Executing on CPU model:85[0x55]
 package-0
  die-0
    cpu-0
      perf-profile-level-0
        cpu-count:20
        enable-cpu-mask:00000000,000fffff
        enable-cpu-list:0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19
        thermal-design-power-ratio:23
        base-frequency(MHz):2300
        speed-select-turbo-freq:unsupported
        speed-select-base-freq:enabled
        speed-select-base-freq
          high-priority-base-frequency(MHz):2700000
          high-priority-cpu-mask:00000000,0000e8c0
          high-priority-cpu-list:6,7,11,13,14,15
          low-priority-base-frequency(MHz):2100000
 package-1
  die-0
    cpu-20
      perf-profile-level-0
        cpu-count:20
        enable-cpu-mask:000000ff,fff00000
        enable-cpu-list:20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39
        thermal-design-power-ratio:23
        base-frequency(MHz):2300
        speed-select-turbo-freq:unsupported
        speed-select-base-freq:enabled
        speed-select-base-freq
          high-priority-base-frequency(MHz):2700000
          high-priority-cpu-mask:0000000e,8c000000
          high-priority-cpu-list:26,27,31,33,34,35
          low-priority-base-frequency(MHz):2100000

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
 .../x86/intel-speed-select/isst-config.c      | 163 +++++++++++++++++-
 .../x86/intel-speed-select/isst-display.c     |  14 +-
 tools/power/x86/intel-speed-select/isst.h     |   3 +
 3 files changed, 173 insertions(+), 7 deletions(-)

diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 449025c6ea46..3c0eb4240df4 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -750,6 +750,152 @@ _get_tdp_level("get-config-current_level", levels, current_level,
 	       "Current TDP Level");
 _get_tdp_level("get-lock-status", levels, locked, "TDP lock status");
 
+struct isst_pkg_ctdp clx_n_pkg_dev;
+
+static int clx_n_get_base_ratio(void)
+{
+	FILE *fp;
+	char *begin, *end, *line = NULL;
+	char number[5];
+	float value = 0;
+	size_t n = 0;
+
+	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")) {
+			/* this is true for CascadeLake-N */
+			begin = strstr(line, "@ ") + 2;
+			end = strstr(line, "GHz");
+			strncpy(number, begin, end - begin);
+			value = atof(number) * 10;
+			break;
+		}
+	}
+	free(line);
+	fclose(fp);
+
+	return (int)(value);
+}
+
+static int clx_n_config(int cpu)
+{
+	int i, ret, pkg_id, die_id;
+	unsigned long cpu_bf;
+	struct isst_pkg_ctdp_level_info *ctdp_level;
+	struct isst_pbf_info *pbf_info;
+
+	ctdp_level = &clx_n_pkg_dev.ctdp_level[0];
+	pbf_info = &ctdp_level->pbf_info;
+	ctdp_level->core_cpumask_size =
+			alloc_cpu_set(&ctdp_level->core_cpumask);
+
+	/* find the frequency base ratio */
+	ctdp_level->tdp_ratio = clx_n_get_base_ratio();
+	if (ctdp_level->tdp_ratio == 0) {
+		debug_printf("CLX: cn base ratio is zero\n");
+		ret = -1;
+		goto error_ret;
+	}
+
+	/* find the high and low priority frequencies */
+	pbf_info->p1_high = 0;
+	pbf_info->p1_low = ~0;
+
+	pkg_id = get_physical_package_id(cpu);
+	die_id = get_physical_die_id(cpu);
+
+	for (i = 0; i < topo_max_cpus; i++) {
+		if (!CPU_ISSET_S(i, present_cpumask_size, present_cpumask))
+			continue;
+
+		if (pkg_id != get_physical_package_id(i) ||
+		    die_id != get_physical_die_id(i))
+			continue;
+
+		CPU_SET_S(i, ctdp_level->core_cpumask_size,
+			  ctdp_level->core_cpumask);
+
+		cpu_bf = parse_int_file(1,
+			"/sys/devices/system/cpu/cpu%d/cpufreq/base_frequency",
+					i);
+		if (cpu_bf > pbf_info->p1_high)
+			pbf_info->p1_high = cpu_bf;
+		if (cpu_bf < pbf_info->p1_low)
+			pbf_info->p1_low = cpu_bf;
+	}
+
+	if (pbf_info->p1_high == ~0UL) {
+		debug_printf("CLX: maximum base frequency not set\n");
+		ret = -1;
+		goto error_ret;
+	}
+
+	if (pbf_info->p1_low == 0) {
+		debug_printf("CLX: minimum base frequency not set\n");
+		ret = -1;
+		goto error_ret;
+	}
+
+	/* convert frequencies back to ratios */
+	pbf_info->p1_high = pbf_info->p1_high / DISP_FREQ_MULTIPLIER;
+	pbf_info->p1_low = pbf_info->p1_low / DISP_FREQ_MULTIPLIER;
+
+	/* create high priority cpu mask */
+	pbf_info->core_cpumask_size = alloc_cpu_set(&pbf_info->core_cpumask);
+	for (i = 0; i < topo_max_cpus; i++) {
+		if (!CPU_ISSET_S(i, present_cpumask_size, present_cpumask))
+			continue;
+
+		if (pkg_id != get_physical_package_id(i) ||
+		    die_id != get_physical_die_id(i))
+			continue;
+
+		cpu_bf = parse_int_file(1,
+			"/sys/devices/system/cpu/cpu%d/cpufreq/base_frequency",
+					i);
+		cpu_bf = cpu_bf / DISP_FREQ_MULTIPLIER;
+		if (cpu_bf == pbf_info->p1_high)
+			CPU_SET_S(i, pbf_info->core_cpumask_size,
+				  pbf_info->core_cpumask);
+	}
+
+	/* extra ctdp & pbf struct parameters */
+	ctdp_level->processed = 1;
+	ctdp_level->pbf_support = 1; /* PBF is always supported and enabled */
+	ctdp_level->pbf_enabled = 1;
+	ctdp_level->fact_support = 0; /* FACT is never supported */
+	ctdp_level->fact_enabled = 0;
+
+	return 0;
+
+error_ret:
+	free_cpu_set(ctdp_level->core_cpumask);
+	return ret;
+}
+
+static void dump_clx_n_config_for_cpu(int cpu, void *arg1, void *arg2,
+				   void *arg3, void *arg4)
+{
+	int ret;
+
+	ret = clx_n_config(cpu);
+	if (ret) {
+		perror("isst_get_process_ctdp");
+	} else {
+		struct isst_pkg_ctdp_level_info *ctdp_level;
+		struct isst_pbf_info *pbf_info;
+
+		ctdp_level = &clx_n_pkg_dev.ctdp_level[0];
+		pbf_info = &ctdp_level->pbf_info;
+		isst_ctdp_display_information(cpu, outf, tdp_level, &clx_n_pkg_dev);
+		free_cpu_set(ctdp_level->core_cpumask);
+		free_cpu_set(pbf_info->core_cpumask);
+	}
+}
+
 static void dump_isst_config_for_cpu(int cpu, void *arg1, void *arg2,
 				     void *arg3, void *arg4)
 {
@@ -768,6 +914,8 @@ static void dump_isst_config_for_cpu(int cpu, void *arg1, void *arg2,
 
 static void dump_isst_config(int arg)
 {
+	void *fn;
+
 	if (cmd_help) {
 		fprintf(stderr,
 			"Print Intel(R) Speed Select Technology Performance profile configuration\n");
@@ -779,14 +927,17 @@ static void dump_isst_config(int arg)
 		exit(0);
 	}
 
+	if (!is_clx_n_platform())
+		fn = dump_isst_config_for_cpu;
+	else
+		fn = dump_clx_n_config_for_cpu;
+
 	isst_ctdp_display_information_start(outf);
 
 	if (max_target_cpus)
-		for_each_online_target_cpu_in_set(dump_isst_config_for_cpu,
-						  NULL, NULL, NULL, NULL);
+		for_each_online_target_cpu_in_set(fn, NULL, NULL, NULL, NULL);
 	else
-		for_each_online_package_in_set(dump_isst_config_for_cpu, NULL,
-					       NULL, NULL, NULL);
+		for_each_online_package_in_set(fn, NULL, NULL, NULL, NULL);
 
 	isst_ctdp_display_information_end(outf);
 }
@@ -1611,6 +1762,7 @@ static void get_clos_assoc(int arg)
 }
 
 static struct process_cmd_struct clx_n_cmds[] = {
+	{ "perf-profile", "info", dump_isst_config, 0 },
 	{ NULL, NULL, NULL, 0 }
 };
 
@@ -1888,7 +2040,8 @@ void process_command(int argc, char **argv,
 		}
 	}
 
-	create_cpu_map();
+	if (!is_clx_n_platform())
+		create_cpu_map();
 
 	i = 0;
 	while (cmds[i].feature) {
diff --git a/tools/power/x86/intel-speed-select/isst-display.c b/tools/power/x86/intel-speed-select/isst-display.c
index 40346d534f78..8309810e7425 100644
--- a/tools/power/x86/intel-speed-select/isst-display.c
+++ b/tools/power/x86/intel-speed-select/isst-display.c
@@ -6,8 +6,6 @@
 
 #include "isst.h"
 
-#define DISP_FREQ_MULTIPLIER 100
-
 static void printcpulist(int str_len, char *str, int mask_size,
 			 cpu_set_t *cpu_mask)
 {
@@ -204,6 +202,9 @@ static void _isst_pbf_display_information(int cpu, FILE *outf, int level,
 		 pbf_info->p1_low * DISP_FREQ_MULTIPLIER);
 	format_and_print(outf, disp_level + 1, header, value);
 
+	if (is_clx_n_platform())
+		return;
+
 	snprintf(header, sizeof(header), "tjunction-temperature(C)");
 	snprintf(value, sizeof(value), "%d", pbf_info->t_prochot);
 	format_and_print(outf, disp_level + 1, header, value);
@@ -377,6 +378,15 @@ void isst_ctdp_display_information(int cpu, FILE *outf, int tdp_level,
 			snprintf(value, sizeof(value), "unsupported");
 		format_and_print(outf, base_level + 4, header, value);
 
+		if (is_clx_n_platform()) {
+			if (ctdp_level->pbf_support)
+				_isst_pbf_display_information(cpu, outf,
+							      tdp_level,
+							  &ctdp_level->pbf_info,
+							      base_level + 4);
+			continue;
+		}
+
 		snprintf(header, sizeof(header), "thermal-design-power(W)");
 		snprintf(value, sizeof(value), "%d", ctdp_level->pkg_tdp);
 		format_and_print(outf, base_level + 4, header, value);
diff --git a/tools/power/x86/intel-speed-select/isst.h b/tools/power/x86/intel-speed-select/isst.h
index d280b27d600d..bef27bd6138e 100644
--- a/tools/power/x86/intel-speed-select/isst.h
+++ b/tools/power/x86/intel-speed-select/isst.h
@@ -69,6 +69,8 @@
 #define PM_CLOS_OFFSET				0x08
 #define PQR_ASSOC_OFFSET			0x20
 
+#define DISP_FREQ_MULTIPLIER 100
+
 struct isst_clos_config {
 	int pkg_id;
 	int die_id;
@@ -237,4 +239,5 @@ extern void isst_display_result(int cpu, FILE *outf, char *feature, char *cmd,
 extern int isst_clos_get_clos_information(int cpu, int *enable, int *type);
 extern void isst_clos_display_clos_information(int cpu, FILE *outf,
 					       int clos_enable, int type);
+extern int is_clx_n_platform(void);
 #endif
-- 
2.17.2

[PATCH v3 6/6] tools/power/x86/intel-speed-select: Implement base-freq commands on CascadeLake-N

[Srinivas Pandruvada]

From: Prarit Bhargava <prarit@redhat.com>

Add functionality for base-freq info|enable|disable info on CascadeLake-N.

Sample output:
Intel(R) Speed Select Technology
Executing on CPU model:85[0x55]
 package-0
  die-0
    cpu-0
      speed-select-base-freq
        high-priority-base-frequency(MHz):2700000
        high-priority-cpu-mask:00000000,0000e8c0
        high-priority-cpu-list:6,7,11,13,14,15
        low-priority-base-frequency(MHz):2100000
 package-1
  die-0
    cpu-20
      speed-select-base-freq
        high-priority-base-frequency(MHz):2700000
        high-priority-cpu-mask:0000000e,8c000000
        high-priority-cpu-list:26,27,31,33,34,35
        low-priority-base-frequency(MHz):2100000

The enable command always returns success, and the disable command always
returns failed because SST-BF cannot be enabled or disabled from the OS on
CascadeLake-N.

Enable command also have support for --auto|-a option, which sets cpufreq
scaling_min to max, so that the high priority base frequency can be the
required minimum for high priority cores. Disable command with -a/--auto
option reset the setting back to the min frequency.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
 .../x86/intel-speed-select/isst-config.c      | 51 +++++++++++++++++--
 1 file changed, 47 insertions(+), 4 deletions(-)

diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 3c0eb4240df4..1c20048b42e7 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -1005,6 +1005,26 @@ static void set_tdp_level(int arg)
 	isst_ctdp_display_information_end(outf);
 }
 
+static void clx_n_dump_pbf_config_for_cpu(int cpu, void *arg1, void *arg2,
+				       void *arg3, void *arg4)
+{
+	int ret;
+
+	ret = clx_n_config(cpu);
+	if (ret) {
+		perror("isst_get_process_ctdp");
+	} else {
+		struct isst_pkg_ctdp_level_info *ctdp_level;
+		struct isst_pbf_info *pbf_info;
+
+		ctdp_level = &clx_n_pkg_dev.ctdp_level[0];
+		pbf_info = &ctdp_level->pbf_info;
+		isst_pbf_display_information(cpu, outf, tdp_level, pbf_info);
+		free_cpu_set(ctdp_level->core_cpumask);
+		free_cpu_set(pbf_info->core_cpumask);
+	}
+}
+
 static void dump_pbf_config_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 				    void *arg4)
 {
@@ -1022,6 +1042,8 @@ static void dump_pbf_config_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 
 static void dump_pbf_config(int arg)
 {
+	void *fn;
+
 	if (cmd_help) {
 		fprintf(stderr,
 			"Print Intel(R) Speed Select Technology base frequency configuration for a TDP level\n");
@@ -1035,13 +1057,18 @@ static void dump_pbf_config(int arg)
 		exit(1);
 	}
 
+	if (!is_clx_n_platform())
+		fn = dump_pbf_config_for_cpu;
+	else
+		fn = clx_n_dump_pbf_config_for_cpu;
+
 	isst_ctdp_display_information_start(outf);
+
 	if (max_target_cpus)
-		for_each_online_target_cpu_in_set(dump_pbf_config_for_cpu, NULL,
-						  NULL, NULL, NULL);
+		for_each_online_target_cpu_in_set(fn, NULL, NULL, NULL, NULL);
 	else
-		for_each_online_package_in_set(dump_pbf_config_for_cpu, NULL,
-					       NULL, NULL, NULL);
+		for_each_online_package_in_set(fn, NULL, NULL, NULL, NULL);
+
 	isst_ctdp_display_information_end(outf);
 }
 
@@ -1235,6 +1262,19 @@ static void set_pbf_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 	int ret;
 	int status = *(int *)arg4;
 
+	if (is_clx_n_platform()) {
+		if (status == 0) {
+			ret = -1;
+			if (auto_mode)
+				set_scaling_min_to_cpuinfo_min(cpu);
+		} else {
+			ret = 0;
+			if (auto_mode)
+				set_scaling_min_to_cpuinfo_max(cpu);
+		}
+		goto disp_result;
+	}
+
 	if (auto_mode) {
 		if (status) {
 			ret = set_pbf_core_power(cpu);
@@ -1763,6 +1803,9 @@ static void get_clos_assoc(int arg)
 
 static struct process_cmd_struct clx_n_cmds[] = {
 	{ "perf-profile", "info", dump_isst_config, 0 },
+	{ "base-freq", "info", dump_pbf_config, 0 },
+	{ "base-freq", "enable", set_pbf_enable, 1 },
+	{ "base-freq", "disable", set_pbf_enable, 0 },
 	{ NULL, NULL, NULL, 0 }
 };
 
-- 
2.17.2

Re: [PATCH v3 0/6] Add CascadeLake-N Support

[Prarit Bhargava]

On 10/7/19 3:30 PM, Srinivas Pandruvada wrote:
> Add support for SST-BF on CascadeLake-N support.  The CascadeLake-N
> processor only support SST-BF and not other SST functionality.
>

Sorry Srinivas, was away from keyboard all last week :(

> v3:
> Fix crash due to geline

^^^ curious how you hit this?  I was repeatedly testing and couldn't
get it to happen.

> Fix display to perf-profile info and base-freq info command
> Fix output for coremask
> Fix base frequency CPU list. This should be displayed for a package
> Auto mode support for base-freq enable/disable
> One of the patch for config only change folded to next one where it is
> used.
>
> The patch 1 has nothing to do with the CLX-N. It saves some bytes in the
> size.
>

Reviewed-by: Prarit Bhargava <prarit@redhat.com>

P.

Re: [PATCH v3 0/6] Add CascadeLake-N Support

[Srinivas Pandruvada]

On Mon, 2019-10-14 at 09:15 -0400, Prarit Bhargava wrote:
> 
> On 10/7/19 3:30 PM, Srinivas Pandruvada wrote:
> > Add support for SST-BF on CascadeLake-N support.  The CascadeLake-N
> > processor only support SST-BF and not other SST functionality.
> > 
> 
> Sorry Srinivas, was away from keyboard all last week :(
> 
> > v3:
> > Fix crash due to geline
> 
> ^^^ curious how you hit this?  I was repeatedly testing and couldn't
> get it to happen.
I guess this depend on weather the local variable happen to be NULL.
This happens 100% on the system I am testing.

Thanks,
Srinivas

> 
> > Fix display to perf-profile info and base-freq info command
> > Fix output for coremask
> > Fix base frequency CPU list. This should be displayed for a package
> > Auto mode support for base-freq enable/disable
> > One of the patch for config only change folded to next one where it
> > is
> > used.
> > 
> > The patch 1 has nothing to do with the CLX-N. It saves some bytes
> > in the
> > size.
> > 
> 
> Reviewed-by: Prarit Bhargava <prarit@redhat.com>
> 
> P.