From: Mika Westerberg <mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: Lorenzo Pieralisi <lorenzo.pieralisi-5wv7dgnIgG8@public.gmane.org>
Cc: Ashok Raj <ashok.raj-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Mario.Limonciello-8PEkshWhKlo@public.gmane.org,
Michael Jamet
<michael.jamet-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Christian Kellner
<ckellner-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"Rafael J. Wysocki" <rjw-LthD3rsA81gm4RdzfppkhA@public.gmane.org>,
Yehezkel Bernat
<YehezkelShB-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Anthony Wong
<anthony.wong-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>,
Andreas Noever
<andreas.noever-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
Lukas Wunner <lukas-JFq808J9C/izQB+pC5nmwQ@public.gmane.org>,
Jacob jun Pan
<jacob.jun.pan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Bjorn Helgaas <bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
David Woodhouse <dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 1/4] PCI / ACPI: Identify external PCI devices
Date: Thu, 15 Nov 2018 13:37:37 +0200 [thread overview]
Message-ID: <20181115113737.GW2500@lahna.fi.intel.com> (raw)
In-Reply-To: <20181115111356.GA599-4tUPXFaYRHv6sAKXYmQ0tx/iLCjYCKR+VpNB7YpNyf8@public.gmane.org>
On Thu, Nov 15, 2018 at 11:13:56AM +0000, Lorenzo Pieralisi wrote:
> I have strong objections to the way these bindings have been forced upon
> everybody; if that's the way *generic* ACPI bindings are specified I
> wonder why there still exists an ACPI specification and related working
> group.
>
> I personally (but that's Bjorn and Rafael choice) think that this is
> not a change that belongs in PCI core, ACPI bindings are ill-defined
> and device tree bindings are non-existing.
Any idea where should I put it then? These systems are already out there
and we need to support them one way or another.
> At the very least Microsoft should be asked to publish and discuss
> these bindings within the ACPI and UEFI forums.
These bindings are public, see here:
https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports
However, they are not part of the ACPI spec as you say.
WARNING: multiple messages have this Message-ID (diff)
From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Lukas Wunner <lukas@wunner.de>,
iommu@lists.linux-foundation.org, Joerg Roedel <joro@8bytes.org>,
David Woodhouse <dwmw2@infradead.org>,
Lu Baolu <baolu.lu@linux.intel.com>,
Ashok Raj <ashok.raj@intel.com>,
Bjorn Helgaas <bhelgaas@google.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Jacob jun Pan <jacob.jun.pan@intel.com>,
Andreas Noever <andreas.noever@gmail.com>,
Michael Jamet <michael.jamet@intel.com>,
Yehezkel Bernat <YehezkelShB@gmail.com>,
Christian Kellner <ckellner@redhat.com>,
Mario.Limonciello@dell.com,
Anthony Wong <anthony.wong@canonical.com>,
linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/4] PCI / ACPI: Identify external PCI devices
Date: Thu, 15 Nov 2018 13:37:37 +0200 [thread overview]
Message-ID: <20181115113737.GW2500@lahna.fi.intel.com> (raw)
In-Reply-To: <20181115111356.GA599@e107981-ln.cambridge.arm.com>
On Thu, Nov 15, 2018 at 11:13:56AM +0000, Lorenzo Pieralisi wrote:
> I have strong objections to the way these bindings have been forced upon
> everybody; if that's the way *generic* ACPI bindings are specified I
> wonder why there still exists an ACPI specification and related working
> group.
>
> I personally (but that's Bjorn and Rafael choice) think that this is
> not a change that belongs in PCI core, ACPI bindings are ill-defined
> and device tree bindings are non-existing.
Any idea where should I put it then? These systems are already out there
and we need to support them one way or another.
> At the very least Microsoft should be asked to publish and discuss
> these bindings within the ACPI and UEFI forums.
These bindings are public, see here:
https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports
However, they are not part of the ACPI spec as you say.
next prev parent reply other threads:[~2018-11-15 11:37 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-12 16:06 [PATCH 0/4] PCI / iommu / thunderbolt: IOMMU based DMA protection Mika Westerberg
[not found] ` <20181112160628.86620-1-mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-11-12 16:06 ` [PATCH 1/4] PCI / ACPI: Identify external PCI devices Mika Westerberg
2018-11-12 16:06 ` Mika Westerberg
2018-11-12 18:02 ` Lukas Wunner
[not found] ` <20181112180203.lx72gjfplb6xlur7-JFq808J9C/izQB+pC5nmwQ@public.gmane.org>
2018-11-13 10:56 ` Lorenzo Pieralisi
2018-11-13 10:56 ` Lorenzo Pieralisi
2018-11-13 11:27 ` Mika Westerberg
[not found] ` <20181113112700.GT2500-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2018-11-13 11:45 ` Lorenzo Pieralisi
2018-11-13 11:45 ` Lorenzo Pieralisi
2018-11-15 10:22 ` Mika Westerberg
2018-11-15 11:13 ` Lorenzo Pieralisi
[not found] ` <20181115111356.GA599-4tUPXFaYRHv6sAKXYmQ0tx/iLCjYCKR+VpNB7YpNyf8@public.gmane.org>
2018-11-15 11:37 ` Mika Westerberg [this message]
2018-11-15 11:37 ` Mika Westerberg
2018-11-15 12:07 ` Lukas Wunner
2018-11-15 12:16 ` Mika Westerberg
2018-11-15 17:46 ` Lorenzo Pieralisi
2018-11-15 17:58 ` Yehezkel Bernat
2018-11-15 17:58 ` Yehezkel Bernat
2018-11-15 19:10 ` Mika Westerberg
2018-11-15 19:27 ` Lukas Wunner
2018-11-15 19:32 ` Mika Westerberg
2018-11-16 9:18 ` Christoph Hellwig
2018-11-16 9:32 ` Mika Westerberg
2018-11-22 10:48 ` Mika Westerberg
2018-11-22 10:59 ` Christoph Hellwig
2018-11-15 19:00 ` Mika Westerberg
2018-11-15 19:33 ` Mario.Limonciello
2018-11-15 19:33 ` Mario.Limonciello
2018-11-16 10:57 ` Lorenzo Pieralisi
2018-11-20 21:43 ` Rafael J. Wysocki
2018-11-21 12:40 ` Lorenzo Pieralisi
2018-11-16 7:01 ` Mika Westerberg
2018-11-12 16:06 ` [PATCH 2/4] iommu/vt-d: Force IOMMU on for platform opt in hint Mika Westerberg
2018-11-12 16:06 ` Mika Westerberg
2018-11-12 17:49 ` Raj, Ashok
2018-11-12 18:09 ` Alex Williamson
2018-11-12 19:51 ` Raj, Ashok
2018-11-12 16:06 ` [PATCH 3/4] iommu/vt-d: Do not enable ATS for external devices Mika Westerberg
2018-11-12 17:53 ` Raj, Ashok
2018-11-12 16:06 ` [PATCH 4/4] thunderbolt: Export IOMMU based DMA protection support to userspace Mika Westerberg
2018-11-12 16:22 ` Mario.Limonciello
2018-11-12 16:22 ` Mario.Limonciello
2018-11-13 10:36 ` Mika Westerberg
2018-11-12 16:59 ` Yehezkel Bernat
2018-11-13 10:55 ` Mika Westerberg
2018-11-13 11:13 ` Yehezkel Bernat
2018-11-13 11:40 ` Mika Westerberg
2018-11-13 14:42 ` Yehezkel Bernat
[not found] ` <CA+CmpXt1cfqjz94=WsggKpNCUw3761-cewa_HTa0ETcYK7o+Hw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-11-13 15:20 ` Mika Westerberg
[not found] ` <20181113152038.GD2500-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org>
2018-11-13 15:38 ` Yehezkel Bernat
2018-11-13 15:38 ` Yehezkel Bernat
[not found] ` <CA+CmpXteN1PJEHMV8rvfeBXK6Eb4z6BgZwa8Ojavi1y9pKN-jA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2018-11-13 16:12 ` Mika Westerberg
2018-11-13 16:12 ` Mika Westerberg
2018-11-12 18:12 ` [PATCH 0/4] PCI / iommu / thunderbolt: IOMMU based DMA protection Lukas Wunner
[not found] ` <20181112181214.xaahc5wni4vuwl6h-JFq808J9C/izQB+pC5nmwQ@public.gmane.org>
2018-11-12 19:04 ` Yehezkel Bernat
2018-11-12 19:04 ` Yehezkel Bernat
2018-11-13 11:13 ` Mika Westerberg
2018-11-13 11:13 ` Mika Westerberg
2018-11-13 8:54 ` Joerg Roedel
2018-11-13 11:32 ` Mika Westerberg
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