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-rw-r--r--Documentation/ABI/testing/sysfs-driver-intel_sdsi47
1 files changed, 29 insertions, 18 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-intel_sdsi b/Documentation/ABI/testing/sysfs-driver-intel_sdsi
index 96b92c105ec4..f8afed127107 100644
--- a/Documentation/ABI/testing/sysfs-driver-intel_sdsi
+++ b/Documentation/ABI/testing/sysfs-driver-intel_sdsi
@@ -4,21 +4,21 @@ KernelVersion: 5.18
Contact: "David E. Box" <david.e.box@linux.intel.com>
Description:
This directory contains interface files for accessing Intel
- Software Defined Silicon (SDSi) features on a CPU. X
- represents the socket instance (though not the socket ID).
- The socket ID is determined by reading the registers file
- and decoding it per the specification.
+ On Demand (formerly Software Defined Silicon or SDSi) features
+ on a CPU. X represents the socket instance (though not the
+ socket ID). The socket ID is determined by reading the
+ registers file and decoding it per the specification.
- Some files communicate with SDSi hardware through a mailbox.
- Should the operation fail, one of the following error codes
- may be returned:
+ Some files communicate with On Demand hardware through a
+ mailbox. Should the operation fail, one of the following error
+ codes may be returned:
========== =====
Error Code Cause
========== =====
EIO General mailbox failure. Log may indicate cause.
EBUSY Mailbox is owned by another agent.
- EPERM SDSI capability is not enabled in hardware.
+ EPERM On Demand capability is not enabled in hardware.
EPROTO Failure in mailbox protocol detected by driver.
See log for details.
EOVERFLOW For provision commands, the size of the data
@@ -54,8 +54,8 @@ KernelVersion: 5.18
Contact: "David E. Box" <david.e.box@linux.intel.com>
Description:
(WO) Used to write an Authentication Key Certificate (AKC) to
- the SDSi NVRAM for the CPU. The AKC is used to authenticate a
- Capability Activation Payload. Mailbox command.
+ the On Demand NVRAM for the CPU. The AKC is used to authenticate
+ a Capability Activation Payload. Mailbox command.
What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X/provision_cap
Date: Feb 2022
@@ -63,17 +63,28 @@ KernelVersion: 5.18
Contact: "David E. Box" <david.e.box@linux.intel.com>
Description:
(WO) Used to write a Capability Activation Payload (CAP) to the
- SDSi NVRAM for the CPU. CAPs are used to activate a given CPU
- feature. A CAP is validated by SDSi hardware using a previously
- provisioned AKC file. Upon successful authentication, the CPU
- configuration is updated. A cold reboot is required to fully
- activate the feature. Mailbox command.
+ On Demand NVRAM for the CPU. CAPs are used to activate a given
+ CPU feature. A CAP is validated by On Demand hardware using a
+ previously provisioned AKC file. Upon successful authentication,
+ the CPU configuration is updated. A cold reboot is required to
+ fully activate the feature. Mailbox command.
+
+What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X/meter_certificate
+Date: Nov 2022
+KernelVersion: 6.2
+Contact: "David E. Box" <david.e.box@linux.intel.com>
+Description:
+ (RO) Used to read back the current meter certificate for the CPU
+ from Intel On Demand hardware. The meter certificate contains
+ utilization metrics of On Demand enabled features. Mailbox
+ command.
What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X/state_certificate
Date: Feb 2022
KernelVersion: 5.18
Contact: "David E. Box" <david.e.box@linux.intel.com>
Description:
- (RO) Used to read back the current State Certificate for the CPU
- from SDSi hardware. The State Certificate contains information
- about the current licenses on the CPU. Mailbox command.
+ (RO) Used to read back the current state certificate for the CPU
+ from On Demand hardware. The state certificate contains
+ information about the current licenses on the CPU. Mailbox
+ command.