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Merge tag 'platform-drivers-x86-v6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen: - alienware WMAX thermal interface support - Split ACPI and platform device based amd/hsmp drivers - AMD X3D frequency/cache mode switching support - asus thermal policy fixes - Disable C1 auto-demotion in suspend to allow entering the deepest C-states - Fix volume buttons on Thinkpad X12 Detachable Tablet Gen 1 - Replace intel_scu_ipc "workaround" with 32-bit IO - Correct *_show() function error handling in panasonic-laptop - Gemini Lake P2SB devfn correction - think-lmi Admin/System certificate authentication support - Disable WMI devices for shutdown, refactoring continues - Vexia EDU ATLA 10 tablet support - Surface Pro 9 5G (Arm/QCOM) support - Misc cleanups / refactoring / improvements * tag 'platform-drivers-x86-v6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (69 commits) platform/x86: p2sb: Cache correct PCI bar for P2SB on Gemini Lake platform/x86: panasonic-laptop: Return errno correctly in show callback Documentation: alienware-wmi: Describe THERMAL_INFORMATION operation 0x02 alienware-wmi: create_thermal_profile() no longer brute-forces IDs alienware-wmi: Adds support to Alienware x17 R2 alienware-wmi: extends the list of supported models alienware-wmi: order alienware_quirks[] alphabetically platform/x86/intel/pmt: allow user offset for PMT callbacks platform/x86/amd/hsmp: Change the error type platform/x86/amd/hsmp: Add new error code and error logs platform/x86/amd: amd_3d_vcache: Add sysfs ABI documentation platform/x86/amd: amd_3d_vcache: Add AMD 3D V-Cache optimizer driver intel-hid: fix volume buttons on Thinkpad X12 Detachable Tablet Gen 1 platform/x86/amd/hsmp: mark hsmp_msg_desc_table[] as maybe_unused platform/x86: asus-wmi: Use platform_profile_cycle() platform/x86: asus-wmi: Fix inconsistent use of thermal policies platform/x86: hp: hp-bioscfg: remove redundant if statement MAINTAINERS: Update ISHTP ECLITE maintainer entry platform/x86: x86-android-tablets: Add support for Vexia EDU ATLA 10 tablet platform/x86: x86-android-tablets: Add support for getting i2c_adapter by PCI parent devname() ...
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‎Documentation/ABI/testing/sysfs-bus-platform-drivers-amd_x3d_vcache

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What: /sys/bus/platform/drivers/amd_x3d_vcache/AMDI0101:00/amd_x3d_mode
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Date: November 2024
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KernelVersion: 6.13
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Contact: Basavaraj Natikar <[email protected]>
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Description: (RW) AMD 3D V-Cache optimizer allows users to switch CPU core
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rankings dynamically.
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This file switches between these two modes:
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- "frequency" cores within the faster CCD are prioritized before
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those in the slower CCD.
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- "cache" cores within the larger L3 CCD are prioritized before
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those in the smaller L3 CCD.

‎Documentation/ABI/testing/sysfs-class-firmware-attributes

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@@ -193,7 +193,7 @@ Description:
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mechanism:
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The means of authentication. This attribute is mandatory.
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Only supported type currently is "password".
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Supported types are "password" or "certificate".
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max_password_length:
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A file that can be read to obtain the
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being configured allowing anyone to make changes.
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After any of these operations the system must reboot for the changes to
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take effect.
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Admin and System certificates are supported from 2025 systems onward.
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certificate_thumbprint:
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Read only attribute used to display the MD5, SHA1 and SHA256 thumbprints

‎Documentation/arch/x86/amd_hsmp.rst

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AMD HSMP interface
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============================================
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Newer Fam19h EPYC server line of processors from AMD support system
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management functionality via HSMP (Host System Management Port).
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Newer Fam19h(model 0x00-0x1f, 0x30-0x3f, 0x90-0x9f, 0xa0-0xaf),
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Fam1Ah(model 0x00-0x1f) EPYC server line of processors from AMD support
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system management functionality via HSMP (Host System Management Port).
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The Host System Management Port (HSMP) is an interface to provide
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OS-level software with access to system management functions via a
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Eg: https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/55898_B1_pub_0_50.zip
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HSMP interface is supported on EPYC server CPU models only.
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HSMP interface is supported on EPYC line of server CPUs and MI300A (APU).
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HSMP device
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============================================
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amd_hsmp driver under the drivers/platforms/x86/ creates miscdevice
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/dev/hsmp to let user space programs run hsmp mailbox commands.
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amd_hsmp driver under drivers/platforms/x86/amd/hsmp/ has separate driver files
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for ACPI object based probing, platform device based probing and for the common
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code for these two drivers.
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Kconfig option CONFIG_AMD_HSMP_PLAT compiles plat.c and creates amd_hsmp.ko.
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Kconfig option CONFIG_AMD_HSMP_ACPI compiles acpi.c and creates hsmp_acpi.ko.
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Selecting any of these two configs automatically selects CONFIG_AMD_HSMP. This
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compiles common code hsmp.c and creates hsmp_common.ko module.
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Both the ACPI and plat drivers create the miscdevice /dev/hsmp to let
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user space programs run hsmp mailbox commands.
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The ACPI object format supported by the driver is defined below.
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$ ls -al /dev/hsmp
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crw-r--r-- 1 root root 10, 123 Jan 21 21:41 /dev/hsmp
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Metrics table definitions will be documented as part of Public PPR.
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The same is defined in the amd_hsmp.h header.
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ACPI device object format
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=========================
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The ACPI object format expected from the amd_hsmp driver
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for socket with ID00 is given below::
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Device(HSMP)
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{
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Name(_HID, "AMDI0097")
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Name(_UID, "ID00")
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Name(HSE0, 0x00000001)
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Name(RBF0, ResourceTemplate()
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{
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Memory32Fixed(ReadWrite, 0xxxxxxx, 0x00100000)
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})
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Method(_CRS, 0, NotSerialized)
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{
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Return(RBF0)
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}
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Method(_STA, 0, NotSerialized)
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{
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If(LEqual(HSE0, One))
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{
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Return(0x0F)
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}
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Else
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{
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Return(Zero)
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}
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}
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Name(_DSD, Package(2)
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{
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Buffer(0x10)
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{
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0x9D, 0x61, 0x4D, 0xB7, 0x07, 0x57, 0xBD, 0x48,
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0xA6, 0x9F, 0x4E, 0xA2, 0x87, 0x1F, 0xC2, 0xF6
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},
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Package(3)
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{
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Package(2) {"MsgIdOffset", 0x00010934},
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Package(2) {"MsgRspOffset", 0x00010980},
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Package(2) {"MsgArgOffset", 0x000109E0}
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}
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})
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}
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An example
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==========

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