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tools/power/x86/intel-speed-select: Add support for core-power discovery

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It is possible that BIOS may not enable core-power feature. In this case
this additional interface will allow to enable from this utility. Also
the information dump, includes the current status of core-power.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Srinivas Pandruvada 2020-01-14 11:22:14 -08:00 committed by Andy Shevchenko
parent 9749b376be
commit 645feeb2f5
3 changed files with 72 additions and 0 deletions
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55
tools/power/x86/intel-speed-select/isst-core.c
View File

@ -6,6 +6,44 @@
#include "isst.h"
int isst_write_pm_config(int cpu, int cp_state)
{
unsigned int req, resp;
int ret;
if (cp_state)
req = BIT(16);
else
req = 0;
ret = isst_send_mbox_command(cpu, WRITE_PM_CONFIG, PM_FEATURE, 0, req,
&resp);
if (ret)
return ret;
debug_printf("cpu:%d WRITE_PM_CONFIG resp:%x\n", cpu, resp);
return 0;
}
int isst_read_pm_config(int cpu, int *cp_state, int *cp_cap)
{
unsigned int resp;
int ret;
ret = isst_send_mbox_command(cpu, READ_PM_CONFIG, PM_FEATURE, 0, 0,
&resp);
if (ret)
return ret;
debug_printf("cpu:%d READ_PM_CONFIG resp:%x\n", cpu, resp);
*cp_state = resp & BIT(16);
*cp_cap = resp & BIT(0) ? 1 : 0;
return 0;
}
int isst_get_ctdp_levels(int cpu, struct isst_pkg_ctdp *pkg_dev)
{
unsigned int resp;
@ -36,6 +74,7 @@ int isst_get_ctdp_levels(int cpu, struct isst_pkg_ctdp *pkg_dev)
int isst_get_ctdp_control(int cpu, int config_index,
struct isst_pkg_ctdp_level_info *ctdp_level)
{
int cp_state, cp_cap;
unsigned int resp;
int ret;
@ -50,6 +89,15 @@ int isst_get_ctdp_control(int cpu, int config_index,
ctdp_level->fact_enabled = !!(resp & BIT(16));
ctdp_level->pbf_enabled = !!(resp & BIT(17));
ret = isst_read_pm_config(cpu, &cp_state, &cp_cap);
if (ret) {
debug_printf("cpu:%d pm_config is not supported \n", cpu);
} else {
debug_printf("cpu:%d pm_config SST-CP state:%d cap:%d \n", cpu, cp_state, cp_cap);
ctdp_level->sst_cp_support = cp_cap;
ctdp_level->sst_cp_enabled = cp_state;
}
debug_printf(
"cpu:%d CONFIG_TDP_GET_TDP_CONTROL resp:%x fact_support:%d pbf_support: %d fact_enabled:%d pbf_enabled:%d\n",
cpu, resp, ctdp_level->fact_support, ctdp_level->pbf_support,
@ -779,6 +827,13 @@ int isst_pm_qos_config(int cpu, int enable_clos, int priority_type)
debug_printf("Turbo-freq feature must be disabled first\n");
return -EINVAL;
}
ret = isst_write_pm_config(cpu, 0);
if (ret)
perror("isst_write_pm_config\n");
} else {
ret = isst_write_pm_config(cpu, 1);
if (ret)
perror("isst_write_pm_config\n");
}
ret = isst_send_mbox_command(cpu, CONFIG_CLOS, CLOS_PM_QOS_CONFIG, 0, 0,

11
tools/power/x86/intel-speed-select/isst-display.c
View File

@ -418,6 +418,17 @@ 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);
snprintf(header, sizeof(header),
"speed-select-core-power");
if (ctdp_level->sst_cp_support) {
if (ctdp_level->sst_cp_enabled)
snprintf(value, sizeof(value), "enabled");
else
snprintf(value, sizeof(value), "disabled");
} else
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,

6
tools/power/x86/intel-speed-select/isst.h
View File

@ -69,6 +69,10 @@
#define PM_CLOS_OFFSET 0x08
#define PQR_ASSOC_OFFSET 0x20
#define READ_PM_CONFIG 0x94
#define WRITE_PM_CONFIG 0x95
#define PM_FEATURE 0x03
#define DISP_FREQ_MULTIPLIER 100
struct isst_clos_config {
@ -119,6 +123,8 @@ struct isst_pkg_ctdp_level_info {
int pbf_support;
int fact_enabled;
int pbf_enabled;
int sst_cp_support;
int sst_cp_enabled;
int tdp_ratio;
int active;
int tdp_control;