Rules for what you can and can't do with _DSD
by Charles Garcia-Tobin
Hi all
Last week at the ASWG conference call I took the action of defining some
ground rules for _DSD submissions. I have drafted some up here. I¹d be
grateful to know your thoughts.
Cheers
Charles
Introduction
============
The following provides rules for the process of submitting _DSD
properties. This process must be followed by vendors wishing to see their
drivers supported by OS vendors that support ACPI.
What properties can be described by _DSD
========================================
_DSD stands for device specific data, it is an object in ACPI that may be
associated with a device to describe specific device properties that are
not covered by other mechanisms in the ACPI specification. An example may
be a mac address, or phy for an networking device.
What properties must not be described by _DSD
=============================================
_DSD must only be used to describe properties that are specific to a
device, rather than properties of the system as whole. i.e. Generic
properties that are required by generic kernel frameworks must not be
described with _DSD.
_DSD must not be used to describe properties that are already covered in
the ACPI specification.
For a system described with ACPI, it must not a requirement that any of
the following areas need and OS to evaluate _DSD in order to work:
- Support dynamic device configurations (hot add/removal)
- Support hardware abstraction through control methods
- power management
- thermal management
- RAS interfaces
_DSD must not be used to describe properties that are specific to an
operating system. For example properties with OS names in the key
would not allowed.
Submitting a binding
====================
<Insert previous mails from Al Stone on the dsd too and dsd(a)acpica.org>
Becoming a reviewer
===================
Anybody who is member of the dsd(a)acpica.org can be a reviewer.
Becoming a maintainer
=====================
_DSD maintainership is a meritocracy. The process is:
1. You submit a request dsd(a)acpica.org to become maintainer
2. Existing maintainers take a view on teh merit of the request based
on the track record of the person making the request in:
2.1 OS verndors. Eg FreeBSD, RH, or Windows may propose a maintainer
2.2 Existing FW representation technologies: ie person is a known
ACPI contributor or Device Tree contributor or maintainer
<< Other stuff to eventually include >>
========================================
Dsd tool stuff from Al, Rules on what properties look like from Rafael
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