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platform/x86/intel/vsec: Add new Discovery feature

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Add the PCIe VSEC ID for new Intel Platform Monitoring Technology
Capability Discovery feature. Discovery provides detailed information for
the various Intel VSEC features. Also make the driver a supplier for
TPMI and Telemetry drivers which will use the information.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20250703022832.1302928-8-david.e.box@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
David E. Box 2025-07-02 19:28:22 -07:00 committed by Ilpo Järvinen
parent e4436e9867
commit 10f32796e8
No known key found for this signature in database
GPG Key ID: 59AC4F6153E5CE31
2 changed files with 27 additions and 3 deletions
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26
drivers/platform/x86/intel/vsec.c
View File

@ -66,6 +66,9 @@ static const char *intel_vsec_name(enum intel_vsec_id id)
case VSEC_ID_TPMI:
return "tpmi";
case VSEC_ID_DISCOVERY:
return "discovery";
default:
return NULL;
}
@ -84,6 +87,8 @@ static bool intel_vsec_supported(u16 id, unsigned long caps)
return !!(caps & VSEC_CAP_SDSI);
case VSEC_ID_TPMI:
return !!(caps & VSEC_CAP_TPMI);
case VSEC_ID_DISCOVERY:
return !!(caps & VSEC_CAP_DISCOVERY);
default:
return false;
}
@ -138,6 +143,8 @@ static bool vsec_driver_present(int cap_id)
return IS_ENABLED(CONFIG_INTEL_SDSI);
case VSEC_CAP_TPMI:
return IS_ENABLED(CONFIG_INTEL_TPMI);
case VSEC_CAP_DISCOVERY:
return IS_ENABLED(CONFIG_INTEL_PMT_DISCOVERY);
default:
return false;
}
@ -392,6 +399,9 @@ static int get_cap_id(u32 header_id, unsigned long *cap_id)
case VSEC_ID_TPMI:
*cap_id = ilog2(VSEC_CAP_TPMI);
break;
case VSEC_ID_DISCOVERY:
*cap_id = ilog2(VSEC_CAP_DISCOVERY);
break;
default:
return -EINVAL;
}
@ -681,14 +691,26 @@ static const struct intel_vsec_platform_info mtl_info = {
.caps = VSEC_CAP_TELEMETRY,
};
static const struct vsec_feature_dependency oobmsm_deps[] = {
{
.feature = VSEC_CAP_TELEMETRY,
.supplier_bitmap = VSEC_CAP_DISCOVERY,
},
};
/* OOBMSM info */
static const struct intel_vsec_platform_info oobmsm_info = {
.caps = VSEC_CAP_TELEMETRY | VSEC_CAP_SDSI | VSEC_CAP_TPMI,
.caps = VSEC_CAP_TELEMETRY | VSEC_CAP_SDSI | VSEC_CAP_TPMI |
VSEC_CAP_DISCOVERY,
.deps = oobmsm_deps,
.num_deps = ARRAY_SIZE(oobmsm_deps),
};
/* DMR OOBMSM info */
static const struct intel_vsec_platform_info dmr_oobmsm_info = {
.caps = VSEC_CAP_TELEMETRY | VSEC_CAP_TPMI,
.caps = VSEC_CAP_TELEMETRY | VSEC_CAP_TPMI | VSEC_CAP_DISCOVERY,
.deps = oobmsm_deps,
.num_deps = ARRAY_SIZE(oobmsm_deps),
};
/* TGL info */

4
include/linux/intel_vsec.h
View File

@ -16,7 +16,8 @@
#define VSEC_CAP_CRASHLOG BIT(3)
#define VSEC_CAP_SDSI BIT(4)
#define VSEC_CAP_TPMI BIT(5)
#define VSEC_FEATURE_COUNT 6
#define VSEC_CAP_DISCOVERY BIT(6)
#define VSEC_FEATURE_COUNT 7
/* Intel DVSEC offsets */
#define INTEL_DVSEC_ENTRIES 0xA
@ -33,6 +34,7 @@ enum intel_vsec_id {
VSEC_ID_TELEMETRY = 2,
VSEC_ID_WATCHER = 3,
VSEC_ID_CRASHLOG = 4,
VSEC_ID_DISCOVERY = 12,
VSEC_ID_SDSI = 65,
VSEC_ID_TPMI = 66,
};