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source | linux | .. SPDX-License-Identifier: GPL-2.0
=================================
The PPC KVM paravirtual interface
=================================
The basic execution principle by which KVM on PowerPC works is to run all kernel
space code in PR=1 which is user space. This way we trap all privileged
instructions and can emulat... | Documentation/virt/kvm/ppc-pv.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
================================
Review checklist for kvm patches
================================
1. The patch must follow Documentation/process/coding-style.rst and
Documentation/process/submitting-patches.rst.
2. Patches should be against kvm.git master or next branches.
... | Documentation/virt/kvm/review-checklist.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=================
KVM VCPU Requests
=================
Overview
========
KVM supports an internal API enabling threads to request a VCPU thread to
perform some activity. For example, a thread may request a VCPU to flush
its TLB with a VCPU request. The API consists of the followi... | Documentation/virt/kvm/vcpu-requests.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=======================================
ARM firmware pseudo-registers interface
=======================================
KVM handles the hypercall services as requested by the guests. New hypercall
services are regularly made available by the ARM specification or by KVM (as
vendor s... | Documentation/virt/kvm/arm/fw-pseudo-registers.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=======================================
Internal ABI between the kernel and HYP
=======================================
This file documents the interaction between the Linux kernel and the
hypervisor layer when running Linux as a hypervisor (for example
KVM). It doesn't cover the i... | Documentation/virt/kvm/arm/hyp-abi.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===============================================
KVM/arm64-specific hypercalls exposed to guests
===============================================
This file documents the KVM/arm64-specific hypercalls which may be
exposed by KVM/arm64 to guest operating systems. These hypercalls are
i... | Documentation/virt/kvm/arm/hypercalls.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===
ARM
===
.. toctree::
:maxdepth: 2
fw-pseudo-registers
hyp-abi
hypercalls
pvtime
ptp_kvm
vcpu-features | Documentation/virt/kvm/arm/index.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
PTP_KVM support for arm/arm64
=============================
PTP_KVM is used for high precision time sync between host and guests.
It relies on transferring the wall clock and counter value from the
host to the guest using a KVM-specific hypercall.
``ARM_SMCCC_VENDOR_HYP_KVM_PTP_FU... | Documentation/virt/kvm/arm/ptp_kvm.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
Paravirtualized time support for arm64
======================================
Arm specification DEN0057/A defines a standard for paravirtualised time
support for AArch64 guests:
https://developer.arm.com/docs/den0057/a
KVM/arm64 implements the stolen time part of this specificati... | Documentation/virt/kvm/arm/pvtime.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===============================
vCPU feature selection on arm64
===============================
KVM/arm64 provides two mechanisms that allow userspace to configure
the CPU features presented to the guest.
KVM_ARM_VCPU_INIT
=================
The ``KVM_ARM_VCPU_INIT`` ioctl accepts... | Documentation/virt/kvm/arm/vcpu-features.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===============================================
ARM Virtual Interrupt Translation Service (ITS)
===============================================
Device types supported:
KVM_DEV_TYPE_ARM_VGIC_ITS ARM Interrupt Translation Service Controller
The ITS allows MSI(-X) interrupts to ... | Documentation/virt/kvm/devices/arm-vgic-its.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
==============================================================
ARM Virtual Generic Interrupt Controller v3 and later (VGICv3)
==============================================================
Device types supported:
- KVM_DEV_TYPE_ARM_VGIC_V3 ARM Generic Interrupt Controller v3... | Documentation/virt/kvm/devices/arm-vgic-v3.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
==================================================
ARM Virtual Generic Interrupt Controller v2 (VGIC)
==================================================
Device types supported:
- KVM_DEV_TYPE_ARM_VGIC_V2 ARM Generic Interrupt Controller v2.0
Only one VGIC instance may be in... | Documentation/virt/kvm/devices/arm-vgic.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=======
Devices
=======
.. toctree::
:maxdepth: 2
arm-vgic-its
arm-vgic
arm-vgic-v3
mpic
s390_flic
vcpu
vfio
vm
xics
xive | Documentation/virt/kvm/devices/index.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=========================
MPIC interrupt controller
=========================
Device types supported:
- KVM_DEV_TYPE_FSL_MPIC_20 Freescale MPIC v2.0
- KVM_DEV_TYPE_FSL_MPIC_42 Freescale MPIC v4.2
Only one MPIC instance, of any type, may be instantiated. The created
M... | Documentation/virt/kvm/devices/mpic.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
====================================
FLIC (floating interrupt controller)
====================================
FLIC handles floating (non per-cpu) interrupts, i.e. I/O, service and some
machine check interruptions. All interrupts are stored in a per-vm list of
pending interrupts. F... | Documentation/virt/kvm/devices/s390_flic.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
======================
Generic vcpu interface
======================
The virtual cpu "device" also accepts the ioctls KVM_SET_DEVICE_ATTR,
KVM_GET_DEVICE_ATTR, and KVM_HAS_DEVICE_ATTR. The interface uses the same struct
kvm_device_attr as other devices, but targets VCPU-wide settin... | Documentation/virt/kvm/devices/vcpu.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===================
VFIO virtual device
===================
Device types supported:
- KVM_DEV_TYPE_VFIO
Only one VFIO instance may be created per VM. The created device
tracks VFIO files (group or device) in use by the VM and features
of those groups/devices important to the c... | Documentation/virt/kvm/devices/vfio.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
====================
Generic vm interface
====================
The virtual machine "device" also accepts the ioctls KVM_SET_DEVICE_ATTR,
KVM_GET_DEVICE_ATTR, and KVM_HAS_DEVICE_ATTR. The interface uses the same
struct kvm_device_attr as other devices, but targets VM-wide settings
a... | Documentation/virt/kvm/devices/vm.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=========================
XICS interrupt controller
=========================
Device type supported: KVM_DEV_TYPE_XICS
Groups:
1. KVM_DEV_XICS_GRP_SOURCES
Attributes:
One per interrupt source, indexed by the source number.
2. KVM_DEV_XICS_GRP_CTRL
Attri... | Documentation/virt/kvm/devices/xics.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===========================================================
POWER9 eXternal Interrupt Virtualization Engine (XIVE Gen1)
===========================================================
Device types supported:
- KVM_DEV_TYPE_XIVE POWER9 XIVE Interrupt Controller generation 1
This ... | Documentation/virt/kvm/devices/xive.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===================================
The LoongArch paravirtual interface
===================================
KVM hypercalls use the HVCL instruction with code 0x100 and the hypercall
number is put in a0. Up to five arguments may be placed in registers a1 - a5.
The return value is pl... | Documentation/virt/kvm/loongarch/hypercalls.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=========================
KVM for LoongArch systems
=========================
.. toctree::
:maxdepth: 2
hypercalls.rst | Documentation/virt/kvm/loongarch/index.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
====================
KVM for s390 systems
====================
.. toctree::
:maxdepth: 2
s390-diag
s390-pv
s390-pv-boot
s390-pv-dump | Documentation/virt/kvm/s390/index.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=============================
The s390 DIAGNOSE call on KVM
=============================
KVM on s390 supports the DIAGNOSE call for making hypercalls, both for
native hypercalls and for selected hypercalls found on other s390
hypervisors.
Note that bits are numbered as by the usu... | Documentation/virt/kvm/s390/s390-diag.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
======================================
s390 (IBM Z) Boot/IPL of Protected VMs
======================================
Summary
-------
The memory of Protected Virtual Machines (PVMs) is not accessible to
I/O or the hypervisor. In those cases where the hypervisor needs to
access the m... | Documentation/virt/kvm/s390/s390-pv-boot.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===========================================
s390 (IBM Z) Protected Virtualization dumps
===========================================
Summary
-------
Dumping a VM is an essential tool for debugging problems inside
it. This is especially true when a protected VM runs into trouble as
... | Documentation/virt/kvm/s390/s390-pv-dump.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=========================================
s390 (IBM Z) Ultravisor and Protected VMs
=========================================
Summary
-------
Protected virtual machines (PVM) are KVM VMs that do not allow KVM to
access VM state like guest memory or guest registers. Instead, the
PVM... | Documentation/virt/kvm/s390/s390-pv.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
======================================
Secure Encrypted Virtualization (SEV)
======================================
Overview
========
Secure Encrypted Virtualization (SEV) is a feature found on AMD processors.
SEV is an extension to the AMD-V architecture which supports running
v... | Documentation/virt/kvm/x86/amd-memory-encryption.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
==============
KVM CPUID bits
==============
:Author: Glauber Costa <glommer@gmail.com>
A guest running on a kvm host, can check some of its features using
cpuid. This is not always guaranteed to work, since userspace can
mask-out some, or even all KVM-related cpuid features befor... | Documentation/virt/kvm/x86/cpuid.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=======================================
Known limitations of CPU virtualization
=======================================
Whenever perfect emulation of a CPU feature is impossible or too hard, KVM
has to choose between not implementing the feature at all or introducing
behavioral dif... | Documentation/virt/kvm/x86/errata.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===================
Linux KVM Hypercall
===================
X86:
KVM Hypercalls have a three-byte sequence of either the vmcall or the vmmcall
instruction. The hypervisor can replace it with instructions that are
guaranteed to be supported.
Up to four arguments may be passed i... | Documentation/virt/kvm/x86/hypercalls.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===================
KVM for x86 systems
===================
.. toctree::
:maxdepth: 2
amd-memory-encryption
cpuid
errata
hypercalls
intel-tdx
mmu
msr
nested-vmx
running-nested-guests
timekeeping | Documentation/virt/kvm/x86/index.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
===================================
Intel Trust Domain Extensions (TDX)
===================================
Overview
========
Intel's Trust Domain Extensions (TDX) protect confidential guest VMs from the
host and physical attacks. A CPU-attested software module called 'the TDX
mod... | Documentation/virt/kvm/x86/intel-tdx.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
======================
The x86 kvm shadow mmu
======================
The mmu (in arch/x86/kvm, files mmu.[ch] and paging_tmpl.h) is responsible
for presenting a standard x86 mmu to the guest, while translating guest
physical addresses to host physical addresses.
The mmu code attem... | Documentation/virt/kvm/x86/mmu.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=================
KVM-specific MSRs
=================
:Author: Glauber Costa <glommer@redhat.com>, Red Hat Inc, 2010
KVM makes use of some custom MSRs to service some requests.
Custom MSRs have a range reserved for them, that goes from
0x4b564d00 to 0x4b564dff. There are MSRs out... | Documentation/virt/kvm/x86/msr.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
==========
Nested VMX
==========
Overview
---------
On Intel processors, KVM uses Intel's VMX (Virtual-Machine eXtensions)
to easily and efficiently run guest operating systems. Normally, these guests
*cannot* themselves be hypervisors running their own guests, because in VMX,
gue... | Documentation/virt/kvm/x86/nested-vmx.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
==============================
Running nested guests with KVM
==============================
A nested guest is the ability to run a guest inside another guest (it
can be KVM-based or a different hypervisor). The straightforward
example is a KVM guest that in turn runs on a KVM gue... | Documentation/virt/kvm/x86/running-nested-guests.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
======================================================
Timekeeping Virtualization for X86-Based Architectures
======================================================
:Author: Zachary Amsden <zamsden@redhat.com>
:Copyright: (c) 2010, Red Hat. All rights reserved.
.. Contents
1)... | Documentation/virt/kvm/x86/timekeeping.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
#########
UML HowTo
#########
.. contents:: :local:
************
Introduction
************
Welcome to User Mode Linux
User Mode Linux is the first Open Source virtualization platform (first
release date 1991) and second virtualization platform for an x86 PC.
How is UML Differen... | Documentation/virt/uml/user_mode_linux_howto_v2.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
================
1-Wire Subsystem
================
.. toctree::
:maxdepth: 1
w1-generic.rst
w1-netlink.rst
masters/index
slaves/index | Documentation/w1/index.rst | null | null | null | null | null |
source | linux | =========================================
Introduction to the 1-wire (w1) subsystem
=========================================
The 1-wire bus is a simple master-slave bus that communicates via a single
signal wire (plus ground, so two wires).
Devices communicate on the bus by pulling the signal to ground via an open
d... | Documentation/w1/w1-generic.rst | null | null | null | null | null |
source | linux | ===============================================
Userspace communication protocol over connector
===============================================
Message types
=============
There are three types of messages between w1 core and userspace:
1. Events. They are generated each time a new master or slave device
is found... | Documentation/w1/w1-netlink.rst | null | null | null | null | null |
source | linux | ====================
Kernel driver ds2482
====================
Supported chips:
* Maxim DS2482-100, Maxim DS2482-800
Prefix: 'ds2482'
Addresses scanned: None
Datasheets:
- http://datasheets.maxim-ic.com/en/ds/DS2482-100.pdf
- http://datasheets.maxim-ic.com/en/ds/DS2482-800.pdf
Autho... | Documentation/w1/masters/ds2482.rst | null | null | null | null | null |
source | linux | ====================
Kernel driver ds2490
====================
Supported chips:
* Maxim DS2490 based
Author: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Description
-----------
The Maxim/Dallas Semiconductor DS2490 is a chip
which allows to build USB <-> W1 bridges.
DS9490(R) is a USB <-> W1 bus master device
which... | Documentation/w1/masters/ds2490.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
=====================
1-wire Master Drivers
=====================
.. toctree::
:maxdepth: 1
ds2482
ds2490
mxc-w1
omap-hdq
w1-gpio
w1-uart | Documentation/w1/masters/index.rst | null | null | null | null | null |
source | linux | ====================
Kernel driver mxc_w1
====================
Supported chips:
* Freescale MX27, MX31 and probably other i.MX SoCs
Datasheets:
- http://www.freescale.com/files/32bit/doc/data_sheet/MCIMX31.pdf?fpsp=1
- http://cache.freescale.com/files/dsp/doc/archive/MCIMX27.pdf?fsrch=1&WT_TYPE=Data%... | Documentation/w1/masters/mxc-w1.rst | null | null | null | null | null |
source | linux | ========================================
Kernel driver for omap HDQ/1-wire module
========================================
Supported chips:
================
HDQ/1-wire controller on the TI OMAP 2430/3430 platforms.
A useful link about HDQ basics:
===============================
http://focus.ti.com/lit/an/slua408a/slu... | Documentation/w1/masters/omap-hdq.rst | null | null | null | null | null |
source | linux | =====================
Kernel driver w1-gpio
=====================
Author: Ville Syrjala <syrjala@sci.fi>
Description
-----------
GPIO 1-wire bus master driver. The driver uses the GPIO API to control the
wire and the GPIO pin can be specified using GPIO machine descriptor tables.
It is also possible to define the m... | Documentation/w1/masters/w1-gpio.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
=====================
Kernel driver w1-uart
=====================
Author: Christoph Winklhofer <cj.winklhofer@gmail.com>
Description
-----------
UART 1-Wire bus driver. The driver utilizes the UART interface via the
Serial Device Bus to create the 1-Wire timing patterns... | Documentation/w1/masters/w1-uart.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
====================
1-wire Slave Drivers
====================
.. toctree::
:maxdepth: 1
w1_ds2406
w1_ds2413
w1_ds2423
w1_ds2438
w1_ds28e04
w1_ds28e17
w1_therm | Documentation/w1/slaves/index.rst | null | null | null | null | null |
source | linux | =======================
w1_ds2406 kernel driver
=======================
Supported chips:
* Maxim DS2406 (and other family 0x12) addressable switches
Author: Scott Alfter <scott@alfter.us>
Description
-----------
The w1_ds2406 driver allows connected devices to be switched on and off.
These chips also provide 128... | Documentation/w1/slaves/w1_ds2406.rst | null | null | null | null | null |
source | linux | =======================
Kernel driver w1_ds2413
=======================
Supported chips:
* Maxim DS2413 1-Wire Dual Channel Addressable Switch
supported family codes:
================ ====
W1_FAMILY_DS2413 0x3A
================ ====
Author: Mariusz Bialonczyk <manio@s... | Documentation/w1/slaves/w1_ds2413.rst | null | null | null | null | null |
source | linux | Kernel driver w1_ds2423
=======================
Supported chips:
* Maxim DS2423 based counter devices.
supported family codes:
=============== ====
W1_THERM_DS2423 0x1D
=============== ====
Author: Mika Laitio <lamikr@pilppa.org>
Description
-----------
Support is provided through the sysfs w1... | Documentation/w1/slaves/w1_ds2423.rst | null | null | null | null | null |
source | linux | Kernel driver w1_ds2438
=======================
Supported chips:
* Maxim DS2438 Smart Battery Monitor
supported family codes:
================ ====
W1_FAMILY_DS2438 0x26
================ ====
Author: Mariusz Bialonczyk <manio@skyboo.net>
Description
-----------
The D... | Documentation/w1/slaves/w1_ds2438.rst | null | null | null | null | null |
source | linux | ========================
Kernel driver w1_ds28e04
========================
Supported chips:
* Maxim DS28E04-100 4096-Bit Addressable 1-Wire EEPROM with PIO
supported family codes:
================= ====
W1_FAMILY_DS28E04 0x1C
================= ====
Author: Markus Franke, <franke.m@sebakmt.com> <... | Documentation/w1/slaves/w1_ds28e04.rst | null | null | null | null | null |
source | linux | ========================
Kernel driver w1_ds28e17
========================
Supported chips:
* Maxim DS28E17 1-Wire-to-I2C Master Bridge
supported family codes:
================= ====
W1_FAMILY_DS28E17 0x19
================= ====
Author: Jan Kandziora <jjj@gmx.de>
Description
-----------
The... | Documentation/w1/slaves/w1_ds28e17.rst | null | null | null | null | null |
source | linux | ======================
Kernel driver w1_therm
======================
Supported chips:
* Maxim ds18*20 based temperature sensors.
* Maxim ds1825 based temperature sensors.
* GXCAS GX20MH01 temperature sensor.
* Maxim MAX31850 thermoelement interface.
Author: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Descriptio... | Documentation/w1/slaves/w1_therm.rst | null | null | null | null | null |
source | linux | =========================================================
Converting old watchdog drivers to the watchdog framework
=========================================================
by Wolfram Sang <wsa@kernel.org>
Before the watchdog framework came into the kernel, every driver had to
implement the API on its own. Now, as t... | Documentation/watchdog/convert_drivers_to_kernel_api.rst | null | null | null | null | null |
source | linux | ===========================
HPE iLO NMI Watchdog Driver
===========================
for iLO based ProLiant Servers
==============================
Last reviewed: 08/20/2018
The HPE iLO NMI Watchdog driver is a kernel module that provides basic
watchdog functionality and handler for the iLO "Generate NMI to System"... | Documentation/watchdog/hpwdt.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0
================
Watchdog Support
================
.. toctree::
:maxdepth: 1
hpwdt
mlx-wdt
pcwd-watchdog
watchdog-api
watchdog-kernel-api
watchdog-parameters
watchdog-pm
wdt
convert_drivers_to_kernel_api | Documentation/watchdog/index.rst | null | null | null | null | null |
source | linux | =========================
Mellanox watchdog drivers
=========================
for x86 based system switches
=============================
This driver provides watchdog functionality for various Mellanox
Ethernet and Infiniband switch systems.
Mellanox watchdog device is implemented in a programmable logic device.
T... | Documentation/watchdog/mlx-wdt.rst | null | null | null | null | null |
source | linux | ===================================
Berkshire Products PC Watchdog Card
===================================
Last reviewed: 10/05/2007
Support for ISA Cards Revision A and C
=======================================
Documentation and Driver by Ken Hollis <kenji@bitgate.com>
The PC Watchdog is a card that offers the ... | Documentation/watchdog/pcwd-watchdog.rst | null | null | null | null | null |
source | linux | =============================
The Linux Watchdog driver API
=============================
Last reviewed: 10/05/2007
Copyright 2002 Christer Weingel <wingel@nano-system.com>
Some parts of this document are copied verbatim from the sbc60xxwdt
driver which is (c) Copyright 2000 Jakob Oestergaard <jakob@ostenfeld.dk>
... | Documentation/watchdog/watchdog-api.rst | null | null | null | null | null |
source | linux | ===============================================
The Linux WatchDog Timer Driver Core kernel API
===============================================
Last reviewed: 12-Feb-2013
Wim Van Sebroeck <wim@iguana.be>
Introduction
------------
This document does not describe what a WatchDog Timer (WDT) Driver or Device is.
It als... | Documentation/watchdog/watchdog-kernel-api.rst | null | null | null | null | null |
source | linux | ==========================
WatchDog Module Parameters
==========================
This file provides information on the module parameters of many of
the Linux watchdog drivers. Watchdog driver parameter specs should
be listed here unless the driver has its own driver-specific information
file.
See Documentation/admin... | Documentation/watchdog/watchdog-parameters.rst | null | null | null | null | null |
source | linux | ===============================================
The Linux WatchDog Timer Power Management Guide
===============================================
Last reviewed: 17-Dec-2018
Wolfram Sang <wsa+renesas@sang-engineering.com>
Introduction
------------
This document states rules about watchdog devices and their power manage... | Documentation/watchdog/watchdog-pm.rst | null | null | null | null | null |
source | linux | ============================================================
WDT Watchdog Timer Interfaces For The Linux Operating System
============================================================
Last Reviewed: 10/05/2007
Alan Cox <alan@lxorguk.ukuu.org.uk>
- ICS WDT501-P
- ICS WDT501-P (no fan tachometer)
- ICS WDT500-P
All... | Documentation/watchdog/wdt.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
==================
ACPI WMI interface
==================
The ACPI WMI interface is a proprietary extension of the ACPI specification made
by Microsoft to allow hardware vendors to embed WMI (Windows Management Instrumentation)
objects inside their ACPI firmware. Typical fu... | Documentation/wmi/acpi-interface.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
============================
WMI driver development guide
============================
The WMI subsystem provides a rich driver API for implementing WMI drivers,
documented at Documentation/driver-api/wmi.rst. This document will serve
as an introductory guide for WMI drive... | Documentation/wmi/driver-development-guide.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
=============
WMI Subsystem
=============
.. toctree::
:maxdepth: 1
acpi-interface
driver-development-guide
devices/index | Documentation/wmi/index.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
==============================================
Dell AWCC WMI interface driver (alienware-wmi)
==============================================
Introduction
============
The WMI device WMAX has been implemented for many Alienware and Dell's G-Series
models. Throughout these ... | Documentation/wmi/devices/alienware-wmi.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
============================================
Dell DDV WMI interface driver (dell-wmi-ddv)
============================================
Introduction
============
Many Dell notebooks made after ~2020 support a WMI-based interface for
retrieving various system data like batt... | Documentation/wmi/devices/dell-wmi-ddv.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
=============================
Driver-specific Documentation
=============================
This section provides information about various devices supported by
the Linux kernel, their protocols and driver details.
.. toctree::
:maxdepth: 1
:numbered:
:glob:
* | Documentation/wmi/devices/index.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
==========================================================
Lenovo WMI Interface Gamezone Driver (lenovo-wmi-gamezone)
==========================================================
Introduction
============
The Lenovo WMI gamezone interface is broken up into multiple GUIDs,
Th... | Documentation/wmi/devices/lenovo-wmi-gamezone.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
===========================================================
Lenovo WMI Interface Other Mode Driver (lenovo-wmi-other)
===========================================================
Introduction
============
Lenovo WMI Other Mode interface is broken up into multiple GUIDs,
The... | Documentation/wmi/devices/lenovo-wmi-other.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
===================================================
MSI WMI Platform Features driver (msi-wmi-platform)
===================================================
Introduction
============
Many MSI notebooks support various features like reading fan sensors. This features are co... | Documentation/wmi/devices/msi-wmi-platform.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-or-later
========================================
Uniwill Notebook driver (uniwill-laptop)
========================================
Introduction
============
Many notebooks manufactured by Uniwill (either directly or as ODM) provide a EC interface
for controlling various platform ... | Documentation/wmi/devices/uniwill-laptop.rst | null | null | null | null | null |
source | linux | .. SPDX-License-Identifier: GPL-2.0-only
==============================
WMI embedded Binary MOF driver
==============================
Introduction
============
Many machines embed WMI Binary MOF (Managed Object Format) metadata used to
describe the details of their ACPI WMI interfaces. The data can be decoded
with t... | Documentation/wmi/devices/wmi-bmof.rst | null | null | null | null | null |
source | linux | // SPDX-License-Identifier: GPL-2.0
/*
* arch/alpha/boot/bootp.c
*
* Copyright (C) 1997 Jay Estabrook
*
* This file is used for creating a bootp file for the Linux/AXP kernel
*
* based significantly on the arch/alpha/boot/main.c of Linus Torvalds
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <li... | arch/alpha/boot/bootp.c | null | null | null | null | null |
source | linux | // SPDX-License-Identifier: GPL-2.0
/*
* arch/alpha/boot/bootpz.c
*
* Copyright (C) 1997 Jay Estabrook
*
* This file is used for creating a compressed BOOTP file for the
* Linux/AXP kernel
*
* based significantly on the arch/alpha/boot/main.c of Linus Torvalds
* and the decompression code from MILO.
*/
#inclu... | arch/alpha/boot/bootpz.c | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
/*
* arch/alpha/boot/head.S
*
* initial bootloader stuff..
*/
#include <asm/pal.h>
.set noreorder
.globl __start
.ent __start
__start:
br $29,2f
2: ldgp $29,0($29)
jsr $26,start_kernel
call_pal PAL_halt
.end __start
.align 5
.globl wrent
.ent wrent
wrent:
.prolog... | arch/alpha/boot/head.S | null | null | null | null | null |
source | linux | // SPDX-License-Identifier: GPL-2.0
/*
* arch/alpha/boot/main.c
*
* Copyright (C) 1994, 1995 Linus Torvalds
*
* This file is the bootloader for the Linux/AXP kernel
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <generated/utsrelease.h>
#include <linux/mm.h>
#include <asm... | arch/alpha/boot/main.c | null | null | null | null | null |
source | linux | // SPDX-License-Identifier: GPL-2.0
/*
* misc.c
*
* This is a collection of several routines from gzip-1.0.3
* adapted for Linux.
*
* malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
*
* Modified for ARM Linux by Russell King
*
* Nicolas Pitre <nico@visuaide.com> 1999/04/14 :
* For this code to ... | arch/alpha/boot/misc.c | null | null | null | null | null |
source | linux | // SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) Paul Mackerras 1997.
*/
#include <linux/string.h>
#include <linux/stdarg.h>
size_t strnlen(const char * s, size_t count)
{
const char *sc;
for (sc = s; count-- && *sc != '\0'; ++sc)
/* nothing */;
return sc - s;
}
# define do_div(n, base) ({ ... | arch/alpha/boot/stdio.c | null | null | null | null | null |
source | linux | // SPDX-License-Identifier: GPL-2.0
/* This utility makes a bootblock suitable for the SRM console/miniloader */
/* Usage:
* mkbb <device> <lxboot>
*
* Where <device> is the name of the device to install the bootblock on,
* and <lxboot> is the name of a bootblock to merge in. This bootblock
* contains the offset... | arch/alpha/boot/tools/mkbb.c | null | null | null | null | null |
source | linux | // SPDX-License-Identifier: GPL-2.0
/*
* arch/alpha/boot/tools/objstrip.c
*
* Strip the object file headers/trailers from an executable (ELF or ECOFF).
*
* Copyright (C) 1996 David Mosberger-Tang.
*/
/*
* Converts an ECOFF or ELF object file into a bootable file. The
* object file must be a OMAGIC file (i.e., ... | arch/alpha/boot/tools/objstrip.c | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ALPHA_AGP_BACKEND_H
#define _ALPHA_AGP_BACKEND_H 1
typedef union _alpha_agp_mode {
struct {
u32 rate : 3;
u32 reserved0 : 1;
u32 fw : 1;
u32 fourgb : 1;
u32 reserved1 : 2;
u32 enable : 1;
u32 sba : 1;
u32 reserved2 : 14;
u32 rq : 8;
} bits;
u32 lw;
}... | arch/alpha/include/asm/agp_backend.h | null | null | null | null | null |
source | linux | #include <linux/spinlock.h>
#include <asm/checksum.h>
#include <asm/console.h>
#include <asm/page.h>
#include <asm/string.h>
#include <linux/uaccess.h>
#include <asm-generic/asm-prototypes.h>
extern void __divl(void);
extern void __reml(void);
extern void __divq(void);
extern void __remq(void);
extern void __divlu(v... | arch/alpha/include/asm/asm-prototypes.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ALPHA_ATOMIC_H
#define _ALPHA_ATOMIC_H
#include <linux/types.h>
#include <asm/barrier.h>
#include <asm/cmpxchg.h>
/*
* Atomic operations that C can't guarantee us. Useful for
* resource counting etc...
*
* But use these as seldom as possible since they are much slo... | arch/alpha/include/asm/atomic.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef __BARRIER_H
#define __BARRIER_H
#define mb() __asm__ __volatile__("mb": : :"memory")
#define rmb() __asm__ __volatile__("mb": : :"memory")
#define wmb() __asm__ __volatile__("wmb": : :"memory")
#define __smp_load_acquire(p) \
({ \
compiletime_assert_atomic_... | arch/alpha/include/asm/barrier.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ALPHA_BITOPS_H
#define _ALPHA_BITOPS_H
#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif
#include <asm/compiler.h>
#include <asm/barrier.h>
/*
* Copyright 1994, Linus Torvalds.
*/
/*
* These have to be done with inline assembly: t... | arch/alpha/include/asm/bitops.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ALPHA_BUG_H
#define _ALPHA_BUG_H
#include <linux/linkage.h>
#ifdef CONFIG_BUG
#include <asm/pal.h>
/* ??? Would be nice to use .gprel32 here, but we can't be sure that the
function loaded the GP, so this could fail in modules. */
#define BUG() do { \
__asm__... | arch/alpha/include/asm/bug.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
/*
* include/asm-alpha/cache.h
*/
#ifndef __ARCH_ALPHA_CACHE_H
#define __ARCH_ALPHA_CACHE_H
/* Bytes per L1 (data) cache line. */
#if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_EV6)
# define L1_CACHE_BYTES 64
# define L1_CACHE_SHIFT 6
#else
/* Both EV4 and E... | arch/alpha/include/asm/cache.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ALPHA_CACHEFLUSH_H
#define _ALPHA_CACHEFLUSH_H
#include <linux/mm.h>
/* Note that the following two definitions are _highly_ dependent
on the contexts in which they are used in the kernel. I personally
think it is criminal how loosely defined these macros are. *... | arch/alpha/include/asm/cacheflush.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ALPHA_CHECKSUM_H
#define _ALPHA_CHECKSUM_H
#include <linux/in6.h>
/*
* This is a version of ip_compute_csum() optimized for IP headers,
* which always checksum on 4 octet boundaries.
*/
extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl);
/*
* computes t... | arch/alpha/include/asm/checksum.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ALPHA_CMPXCHG_H
#define _ALPHA_CMPXCHG_H
/*
* Atomic exchange.
* Since it can be used to implement critical sections
* it must clobber "memory" (also for interrupts in UP).
*/
static inline unsigned long
____xchg_u8(volatile char *m, unsigned long val)
{
unsigned l... | arch/alpha/include/asm/cmpxchg.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ALPHA_COMPILER_H
#define __ALPHA_COMPILER_H
#include <uapi/asm/compiler.h>
#endif /* __ALPHA_COMPILER_H */ | arch/alpha/include/asm/compiler.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef __AXP_CONSOLE_H
#define __AXP_CONSOLE_H
#include <uapi/asm/console.h>
#ifndef __ASSEMBLER__
extern long callback_puts(long unit, const char *s, long length);
extern long callback_getc(long unit);
extern long callback_open_console(void);
extern long callback_close_console... | arch/alpha/include/asm/console.h | null | null | null | null | null |
source | linux | /* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ALPHA_CIA__H__
#define __ALPHA_CIA__H__
/* Define to experiment with fitting everything into one 512MB HAE window. */
#define CIA_ONE_HAE_WINDOW 1
#include <linux/types.h>
#include <asm/compiler.h>
/*
* CIA is the internal name for the 21171 chipset which provides
... | arch/alpha/include/asm/core_cia.h | null | null | null | null | null |
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