Merge tag 'docs-6.8' of git://git.lwn.net/linux

Pull documentation update from Jonathan Corbet:
 "Another moderately busy cycle for documentation, including:

   - The minimum Sphinx requirement has been raised to 2.4.4, following
     a warning that was added in 6.2

   - Some reworking of the Documentation/process front page to,
     hopefully, make it more useful

   - Various kernel-doc tweaks to, for example, make it deal properly
     with __counted_by annotations

   - We have also restored a warning for documentation of nonexistent
     structure members that disappeared a while back. That had the
     delightful consequence of adding some 600 warnings to the docs
     build. A sustained effort by Randy, Vegard, and myself has
     addressed almost all of those, bringing the documentation back into
     sync with the code. The fixes are going through the appropriate
     maintainer trees

   - Various improvements to the HTML rendered docs, including automatic
     links to Git revisions and a nice new pulldown to make translations
     easy to access

   - Speaking of translations, more of those for Spanish and Chinese

  ... plus the usual stream of documentation updates and typo fixes"

* tag 'docs-6.8' of git://git.lwn.net/linux: (57 commits)
  MAINTAINERS: use tabs for indent of CONFIDENTIAL COMPUTING THREAT MODEL
  A reworked process/index.rst
  ring-buffer/Documentation: Add documentation on buffer_percent file
  Translated the RISC-V architecture boot documentation.
  Docs: remove mentions of fdformat from util-linux
  Docs/zh_CN: Fix the meaning of DEBUG to pr_debug()
  Documentation: move driver-api/dcdbas to userspace-api/
  Documentation: move driver-api/isapnp to userspace-api/
  Documentation/core-api : fix typo in workqueue
  Documentation/trace: Fixed typos in the ftrace FLAGS section
  kernel-doc: handle a void function without producing a warning
  scripts/get_abi.pl: ignore some temp files
  docs: kernel_abi.py: fix command injection
  scripts/get_abi: fix source path leak
  CREDITS, MAINTAINERS, docs/process/howto: Update man-pages' maintainer
  docs: translations: add translations links when they exist
  kernel-doc: Align quick help and the code
  MAINTAINERS: add reviewer for Spanish translations
  docs: ignore __counted_by attribute in structure definitions
  scripts: kernel-doc: Clarify missing struct member description
  ..

11 files changed, 164 insertions, 46 deletions

diff --git a/Documentation/userspace-api/dcdbas.rst b/Documentation/userspace-api/dcdbas.rst
new file mode 100644
index 000000000000..309cc57a7c1c
--- /dev/null
+++ b/Documentation/userspace-api/dcdbas.rst
@@ -0,0 +1,99 @@
+===================================
+Dell Systems Management Base Driver
+===================================
+
+Overview
+========
+
+The Dell Systems Management Base Driver provides a sysfs interface for
+systems management software such as Dell OpenManage to perform system
+management interrupts and host control actions (system power cycle or
+power off after OS shutdown) on certain Dell systems.
+
+Dell OpenManage requires this driver on the following Dell PowerEdge systems:
+300, 1300, 1400, 400SC, 500SC, 1500SC, 1550, 600SC, 1600SC, 650, 1655MC,
+700, and 750.  Other Dell software such as the open source libsmbios project
+is expected to make use of this driver, and it may include the use of this
+driver on other Dell systems.
+
+The Dell libsmbios project aims towards providing access to as much BIOS
+information as possible.  See http://linux.dell.com/libsmbios/main/ for
+more information about the libsmbios project.
+
+
+System Management Interrupt
+===========================
+
+On some Dell systems, systems management software must access certain
+management information via a system management interrupt (SMI).  The SMI data
+buffer must reside in 32-bit address space, and the physical address of the
+buffer is required for the SMI.  The driver maintains the memory required for
+the SMI and provides a way for the application to generate the SMI.
+The driver creates the following sysfs entries for systems management
+software to perform these system management interrupts::
+
+	/sys/devices/platform/dcdbas/smi_data
+	/sys/devices/platform/dcdbas/smi_data_buf_phys_addr
+	/sys/devices/platform/dcdbas/smi_data_buf_size
+	/sys/devices/platform/dcdbas/smi_request
+
+Systems management software must perform the following steps to execute
+a SMI using this driver:
+
+1) Lock smi_data.
+2) Write system management command to smi_data.
+3) Write "1" to smi_request to generate a calling interface SMI or
+   "2" to generate a raw SMI.
+4) Read system management command response from smi_data.
+5) Unlock smi_data.
+
+
+Host Control Action
+===================
+
+Dell OpenManage supports a host control feature that allows the administrator
+to perform a power cycle or power off of the system after the OS has finished
+shutting down.  On some Dell systems, this host control feature requires that
+a driver perform a SMI after the OS has finished shutting down.
+
+The driver creates the following sysfs entries for systems management software
+to schedule the driver to perform a power cycle or power off host control
+action after the system has finished shutting down:
+
+/sys/devices/platform/dcdbas/host_control_action
+/sys/devices/platform/dcdbas/host_control_smi_type
+/sys/devices/platform/dcdbas/host_control_on_shutdown
+
+Dell OpenManage performs the following steps to execute a power cycle or
+power off host control action using this driver:
+
+1) Write host control action to be performed to host_control_action.
+2) Write type of SMI that driver needs to perform to host_control_smi_type.
+3) Write "1" to host_control_on_shutdown to enable host control action.
+4) Initiate OS shutdown.
+   (Driver will perform host control SMI when it is notified that the OS
+   has finished shutting down.)
+
+
+Host Control SMI Type
+=====================
+
+The following table shows the value to write to host_control_smi_type to
+perform a power cycle or power off host control action:
+
+=================== =====================
+PowerEdge System    Host Control SMI Type
+=================== =====================
+      300             HC_SMITYPE_TYPE1
+     1300             HC_SMITYPE_TYPE1
+     1400             HC_SMITYPE_TYPE2
+      500SC           HC_SMITYPE_TYPE2
+     1500SC           HC_SMITYPE_TYPE2
+     1550             HC_SMITYPE_TYPE2
+      600SC           HC_SMITYPE_TYPE2
+     1600SC           HC_SMITYPE_TYPE2
+      650             HC_SMITYPE_TYPE2
+     1655MC           HC_SMITYPE_TYPE2
+      700             HC_SMITYPE_TYPE3
+      750             HC_SMITYPE_TYPE3
+=================== =====================
diff --git a/Documentation/userspace-api/index.rst b/Documentation/userspace-api/index.rst
index 8be8b1979194..09f61bd2ac2e 100644
--- a/Documentation/userspace-api/index.rst
+++ b/Documentation/userspace-api/index.rst
@@ -9,11 +9,8 @@ While much of the kernel's user-space API is documented elsewhere
 also be found in the kernel tree itself.  This manual is intended to be the
 place where this information is gathered.
 
-.. class:: toc-title
-
-	   Table of contents
-
 .. toctree::
+   :caption: Table of contents
    :maxdepth: 2
 
    no_new_privs
@@ -34,6 +31,9 @@ place where this information is gathered.
    vduse
    futex2
    lsm
+   tee
+   isapnp
+   dcdbas
 
 .. only::  subproject and html
 
diff --git a/Documentation/userspace-api/isapnp.rst b/Documentation/userspace-api/isapnp.rst
new file mode 100644
index 000000000000..d6fceb19b8ae
--- /dev/null
+++ b/Documentation/userspace-api/isapnp.rst
@@ -0,0 +1,15 @@
+=======================
+ISA Plug & Play support
+=======================
+
+Interface /proc/isapnp
+======================
+
+The interface was removed in kernel 2.5.53. See pnp.rst for more details.
+
+Interface /proc/bus/isapnp
+==========================
+
+This directory allows access to ISA PnP cards and logical devices.
+The regular files contain the contents of ISA PnP registers for
+a logical device.
diff --git a/Documentation/userspace-api/media/cec/cec-api.rst b/Documentation/userspace-api/media/cec/cec-api.rst
index 4d229ed8a1d9..578303d484f3 100644
--- a/Documentation/userspace-api/media/cec/cec-api.rst
+++ b/Documentation/userspace-api/media/cec/cec-api.rst
@@ -10,13 +10,8 @@ Part V - Consumer Electronics Control API
 This part describes the CEC: Consumer Electronics Control
 
 
-.. only:: html
-
-   .. class:: toc-title
-
-        Table of Contents
-
 .. toctree::
+    :caption: Table of Contents
     :maxdepth: 5
     :numbered:
 
diff --git a/Documentation/userspace-api/media/drivers/index.rst b/Documentation/userspace-api/media/drivers/index.rst
index 1726f8ec86fa..e5e7deb0d392 100644
--- a/Documentation/userspace-api/media/drivers/index.rst
+++ b/Documentation/userspace-api/media/drivers/index.rst
@@ -21,13 +21,8 @@ more details.
 
 For more details see the file COPYING in the source distribution of Linux.
 
-.. only:: html
-
-   .. class:: toc-title
-
-        Table of Contents
-
 .. toctree::
+	:caption: Table of Contents
 	:maxdepth: 5
 	:numbered:
 
diff --git a/Documentation/userspace-api/media/dvb/dvbapi.rst b/Documentation/userspace-api/media/dvb/dvbapi.rst
index 1dda69343f34..4ac0c1bc54ca 100644
--- a/Documentation/userspace-api/media/dvb/dvbapi.rst
+++ b/Documentation/userspace-api/media/dvb/dvbapi.rst
@@ -27,13 +27,8 @@ Part II - Digital TV API
 
 **Version 5.10**
 
-.. only:: html
-
-   .. class:: toc-title
-
-        Table of Contents
-
 .. toctree::
+    :caption: Table of Contents
     :maxdepth: 5
     :numbered:
 
diff --git a/Documentation/userspace-api/media/index.rst b/Documentation/userspace-api/media/index.rst
index d839904be085..337ef6c7c47f 100644
--- a/Documentation/userspace-api/media/index.rst
+++ b/Documentation/userspace-api/media/index.rst
@@ -21,13 +21,8 @@ Documentation/driver-api/media/index.rst
     media devices;
 
 
-.. only:: html
-
-   .. class:: toc-title
-
-        Table of Contents
-
 .. toctree::
+    :caption: Table of Contents
     :maxdepth: 1
 
     intro
diff --git a/Documentation/userspace-api/media/mediactl/media-controller.rst b/Documentation/userspace-api/media/mediactl/media-controller.rst
index 508dd693bf6c..73a87f82f92d 100644
--- a/Documentation/userspace-api/media/mediactl/media-controller.rst
+++ b/Documentation/userspace-api/media/mediactl/media-controller.rst
@@ -7,13 +7,8 @@
 Part IV - Media Controller API
 ##############################
 
-.. only:: html
-
-   .. class:: toc-title
-
-        Table of Contents
-
 .. toctree::
+    :caption: Table of Contents
     :maxdepth: 5
     :numbered:
 
diff --git a/Documentation/userspace-api/media/rc/remote_controllers.rst b/Documentation/userspace-api/media/rc/remote_controllers.rst
index f89291838637..483f9ae92a90 100644
--- a/Documentation/userspace-api/media/rc/remote_controllers.rst
+++ b/Documentation/userspace-api/media/rc/remote_controllers.rst
@@ -7,13 +7,8 @@
 Part III - Remote Controller API
 ################################
 
-.. only:: html
-
-   .. class:: toc-title
-
-        Table of Contents
-
 .. toctree::
+    :caption: Table of Contents
     :maxdepth: 5
     :numbered:
 
diff --git a/Documentation/userspace-api/media/v4l/v4l2.rst b/Documentation/userspace-api/media/v4l/v4l2.rst
index ad7a2bf0cf26..cf8ae56a008c 100644
--- a/Documentation/userspace-api/media/v4l/v4l2.rst
+++ b/Documentation/userspace-api/media/v4l/v4l2.rst
@@ -11,13 +11,8 @@ This part describes the Video for Linux API version 2 (V4L2 API) specification.
 
 **Revision 4.5**
 
-.. only:: html
-
-   .. class:: toc-title
-
-        Table of Contents
-
 .. toctree::
+    :caption: Table of Contents
     :numbered:
     :maxdepth: 5
 
diff --git a/Documentation/userspace-api/tee.rst b/Documentation/userspace-api/tee.rst
new file mode 100644
index 000000000000..e2368dbc3451
--- /dev/null
+++ b/Documentation/userspace-api/tee.rst
@@ -0,0 +1,39 @@
+.. SPDX-License-Identifier: GPL-2.0
+.. tee:
+
+==================================================
+TEE (Trusted Execution Environment) Userspace API
+==================================================
+
+include/uapi/linux/tee.h defines the generic interface to a TEE.
+
+User space (the client) connects to the driver by opening /dev/tee[0-9]* or
+/dev/teepriv[0-9]*.
+
+- TEE_IOC_SHM_ALLOC allocates shared memory and returns a file descriptor
+  which user space can mmap. When user space doesn't need the file
+  descriptor any more, it should be closed. When shared memory isn't needed
+  any longer it should be unmapped with munmap() to allow the reuse of
+  memory.
+
+- TEE_IOC_VERSION lets user space know which TEE this driver handles and
+  its capabilities.
+
+- TEE_IOC_OPEN_SESSION opens a new session to a Trusted Application.
+
+- TEE_IOC_INVOKE invokes a function in a Trusted Application.
+
+- TEE_IOC_CANCEL may cancel an ongoing TEE_IOC_OPEN_SESSION or TEE_IOC_INVOKE.
+
+- TEE_IOC_CLOSE_SESSION closes a session to a Trusted Application.
+
+There are two classes of clients, normal clients and supplicants. The latter is
+a helper process for the TEE to access resources in Linux, for example file
+system access. A normal client opens /dev/tee[0-9]* and a supplicant opens
+/dev/teepriv[0-9].
+
+Much of the communication between clients and the TEE is opaque to the
+driver. The main job for the driver is to receive requests from the
+clients, forward them to the TEE and send back the results. In the case of
+supplicants the communication goes in the other direction, the TEE sends
+requests to the supplicant which then sends back the result.