diff options
author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2020-01-14 11:22:14 -0800 |
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committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-01-20 11:39:31 +0200 |
commit | 645feeb2f571acfc36a7205a6302e8c7e442d617 (patch) | |
tree | 316293e0bc8eb849c27a725922751127d3d7b667 | |
parent | 9749b376be181a98c75b6c2093e6fc30d92e38cc (diff) | |
download | linux-645feeb2f571acfc36a7205a6302e8c7e442d617.tar.bz2 |
tools/power/x86/intel-speed-select: Add support for core-power discovery
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>
-rw-r--r-- | tools/power/x86/intel-speed-select/isst-core.c | 55 | ||||
-rw-r--r-- | tools/power/x86/intel-speed-select/isst-display.c | 11 | ||||
-rw-r--r-- | tools/power/x86/intel-speed-select/isst.h | 6 |
3 files changed, 72 insertions, 0 deletions
diff --git a/tools/power/x86/intel-speed-select/isst-core.c b/tools/power/x86/intel-speed-select/isst-core.c index d14c7bcd327a..81a119f688a3 100644 --- a/tools/power/x86/intel-speed-select/isst-core.c +++ b/tools/power/x86/intel-speed-select/isst-core.c @@ -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, diff --git a/tools/power/x86/intel-speed-select/isst-display.c b/tools/power/x86/intel-speed-select/isst-display.c index 040dd09d5eee..1d1439036c12 100644 --- a/tools/power/x86/intel-speed-select/isst-display.c +++ b/tools/power/x86/intel-speed-select/isst-display.c @@ -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, diff --git a/tools/power/x86/intel-speed-select/isst.h b/tools/power/x86/intel-speed-select/isst.h index cdf0f8a6dbbf..ad5aa6341d0f 100644 --- a/tools/power/x86/intel-speed-select/isst.h +++ b/tools/power/x86/intel-speed-select/isst.h @@ -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; |