Commit 4ea62915 authored by David E. Box's avatar David E. Box Committed by Hans de Goede
Browse files

platform/x86/intel/sdsi: Add Intel On Demand text 



Intel Software Defined Silicon (SDSi) is now officially known as Intel
On Demand. Add On Demand to the description in the kconfig, documentation,
and driver source.

Signed-off-by: default avatarDavid E. Box <david.e.box@linux.intel.com>
Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20221119002343.1281885-2-david.e.box@linux.intel.com


Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent c5ad454a

Documentation/ABI/testing/sysfs-driver-intel_sdsi

+19 −18
Original line number Diff line number Diff line
@@ -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 +63,18 @@ 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/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.

drivers/platform/x86/intel/Kconfig

+4 −4
Original line number Diff line number Diff line
@@ -157,13 +157,13 @@ config INTEL_RST 
	  as usual.



config INTEL_SDSI

	tristate "Intel Software Defined Silicon Driver"

	tristate "Intel On Demand (Software Defined Silicon) Driver"

	depends on INTEL_VSEC

	depends on X86_64

	help

	  This driver enables access to the Intel Software Defined Silicon

	  interface used to provision silicon features with an authentication

	  certificate and capability license.

	  This driver enables access to the Intel On Demand (formerly Software

	  Defined Silicon) interface used to provision silicon features with an

	  authentication certificate and capability license.



	  To compile this driver as a module, choose M here: the module will

	  be called intel_sdsi.

drivers/platform/x86/intel/sdsi.c

+2 −2
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/*

 * Intel Software Defined Silicon driver

 * Intel On Demand (Software Defined Silicon) driver

 *

 * Copyright (c) 2022, Intel Corporation.

 * All Rights Reserved.
@@ -586,5 +586,5 @@ static struct auxiliary_driver sdsi_aux_driver = { 
module_auxiliary_driver(sdsi_aux_driver);



MODULE_AUTHOR("David E. Box <david.e.box@linux.intel.com>");

MODULE_DESCRIPTION("Intel Software Defined Silicon driver");

MODULE_DESCRIPTION("Intel On Demand (SDSi) driver");

MODULE_LICENSE("GPL");