From: Jon Masters <jcm@redhat.com>
To: Bjorn Helgaas <helgaas@kernel.org>, Sinan Kaya <okaya@codeaurora.org>
Cc: cov@codeaurora.org, Tomasz Nowicki <tn@semihalf.com>,
will.deacon@arm.com, catalin.marinas@arm.com, rafael@kernel.org,
Lorenzo.Pieralisi@arm.com, arnd@arndb.de, hanjun.guo@linaro.org,
jchandra@broadcom.com, dhdang@apm.com, ard.biesheuvel@linaro.org,
robert.richter@caviumnetworks.com, mw@semihalf.com,
Liviu.Dudau@arm.com, ddaney@caviumnetworks.com,
wangyijing@huawei.com, msalter@redhat.com,
linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linaro-acpi@lists.linaro.org, andrea.gallo@linaro.org,
jeremy.linton@arm.com, liudongdong3@huawei.com,
gabriele.paoloni@huawei.com, jhugo@codeaurora.org,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCHv2] PCI: QDF2432 32 bit config space accessors
Date: Thu, 1 Dec 2016 23:58:52 -0500 [thread overview]
Message-ID: <3a386ce0-33df-fb88-33df-88b9ca8816c7@redhat.com> (raw)
In-Reply-To: <20161103140058.GA31142@bhelgaas-glaptop.roam.corp.google.com>
On 11/03/2016 10:00 AM, Bjorn Helgaas wrote:
> It turns out that we can't use the _CRS of host bridges because of the
> Producer/Consumer bit screwup [1]. So the fallback is to include the
> ECAM space in the _CRS of a PNP0C02 device. This is what the PCI
> Firmware spec r3.0, Table 4-2, footnote 2 is talking about.
>
> Bjorn
>
> [1] The original ACPI spec intent was that Consumer resources would be
> space like ECAM that is consumed directly by the bridge, and Producer
> resources would be the windows forwarded down to PCI. But BIOSes
> didn't use the Producer/Consumer bit consistently, so we have to
> assume that all resources in host bridge _CRS are windows, which
> leaves us no way to describe the Consumer resources.
Aside - and now I realize you'd called this out as recently as last
month. Alas the HPE m400 I reference on the other thread about the
APM quirks doesn't have the motherboard resource entry so we're
stuck with exactly the situation you describe above there.
Jon.
--
Computer Architect | Sent from my Fedora powered laptop
next prev parent reply other threads:[~2016-12-02 4:59 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-09 19:24 [PATCH V6 0/5] ECAM quirks handling for ARM64 platforms Tomasz Nowicki
2016-09-09 19:24 ` [PATCH V6 1/5] PCI/ACPI: Extend pci_mcfg_lookup() responsibilities Tomasz Nowicki
2016-09-09 19:24 ` [PATCH V6 2/5] PCI/ACPI: Check platform specific ECAM quirks Tomasz Nowicki
2016-09-12 22:24 ` Duc Dang
2016-09-12 22:47 ` Duc Dang
2016-09-13 5:58 ` Tomasz Nowicki
2016-09-13 6:37 ` Tomasz Nowicki
2016-09-13 2:36 ` Dongdong Liu
2016-09-13 6:32 ` Tomasz Nowicki
2016-09-13 11:38 ` Dongdong Liu
2016-09-14 12:40 ` Lorenzo Pieralisi
2016-09-15 10:58 ` Lorenzo Pieralisi
2016-09-16 9:02 ` Gabriele Paoloni
2016-09-16 12:27 ` Christopher Covington
2016-09-16 13:42 ` Gabriele Paoloni
2016-09-09 19:24 ` [PATCH V6 3/5] PCI: thunder-pem: Allow to probe PEM-specific register range for ACPI case Tomasz Nowicki
2016-09-19 18:09 ` Bjorn Helgaas
2016-09-20 7:23 ` Tomasz Nowicki
2016-09-20 13:33 ` Bjorn Helgaas
2016-09-20 13:40 ` Ard Biesheuvel
2016-09-20 14:05 ` Bjorn Helgaas
2016-09-20 15:09 ` Ard Biesheuvel
2016-09-20 19:17 ` Bjorn Helgaas
2016-09-21 14:05 ` Lorenzo Pieralisi
2016-09-21 18:04 ` Bjorn Helgaas
2016-09-21 18:58 ` Duc Dang
2016-09-21 19:18 ` Bjorn Helgaas
2016-09-23 10:53 ` Tomasz Nowicki
2016-09-22 9:49 ` Lorenzo Pieralisi
2016-09-22 11:10 ` Gabriele Paoloni
2016-09-22 12:44 ` Lorenzo Pieralisi
2016-09-22 18:31 ` Bjorn Helgaas
2016-09-22 22:10 ` Bjorn Helgaas
2016-09-23 10:11 ` Lorenzo Pieralisi
2016-09-23 10:58 ` Gabriele Paoloni
2017-09-14 14:06 ` Ard Biesheuvel
2017-09-26 8:23 ` Gabriele Paoloni
2016-09-22 14:20 ` Christopher Covington
2016-09-21 14:10 ` Gabriele Paoloni
2016-09-21 18:59 ` Bjorn Helgaas
2016-09-22 11:12 ` Gabriele Paoloni
2016-09-09 19:24 ` [PATCH V6 4/5] PCI: thunder: Enable ACPI PCI controller for ThunderX pass2.x silicon version Tomasz Nowicki
2016-09-19 15:45 ` Bjorn Helgaas
2016-09-20 7:06 ` Tomasz Nowicki
2016-09-20 13:08 ` Bjorn Helgaas
2016-09-21 8:05 ` Tomasz Nowicki
2016-09-09 19:24 ` [PATCH V6 5/5] PCI: thunder: Enable ACPI PCI controller for ThunderX pass1.x " Tomasz Nowicki
2016-09-09 19:30 ` [PATCH V6 0/5] ECAM quirks handling for ARM64 platforms Tomasz Nowicki
2016-09-20 19:26 ` Bjorn Helgaas
2016-09-21 1:15 ` cov
2016-09-21 13:11 ` Bjorn Helgaas
2016-09-21 14:07 ` Sinan Kaya
2016-09-21 17:31 ` Bjorn Helgaas
2016-09-21 17:34 ` Sinan Kaya
2016-09-21 22:38 ` [PATCHv2] PCI: QDF2432 32 bit config space accessors Christopher Covington
2016-10-31 21:48 ` Bjorn Helgaas
2016-11-01 13:06 ` cov
2016-11-02 16:08 ` Bjorn Helgaas
2016-11-02 16:36 ` Sinan Kaya
2016-11-03 14:00 ` Bjorn Helgaas
2016-11-03 16:58 ` Sinan Kaya
2016-11-03 17:06 ` Sinan Kaya
2016-11-03 20:43 ` Bjorn Helgaas
2016-11-03 23:49 ` Sinan Kaya
2016-12-02 4:58 ` Jon Masters [this message]
2016-11-02 16:41 ` Bjorn Helgaas
2016-11-09 19:25 ` Christopher Covington
2016-11-09 20:06 ` Bjorn Helgaas
2016-11-09 20:29 ` Ard Biesheuvel
2016-11-09 22:49 ` Bjorn Helgaas
2016-11-10 10:25 ` Ard Biesheuvel
2016-11-10 13:57 ` Lorenzo Pieralisi
2016-11-10 17:42 ` Bjorn Helgaas
2016-12-02 5:12 ` Jon Masters
2016-09-21 22:40 ` [PATCH V6 0/5] ECAM quirks handling for ARM64 platforms Christopher Covington
2016-09-22 23:08 ` Bjorn Helgaas
2016-09-23 18:41 ` Christopher Covington
2016-09-23 19:17 ` Bjorn Helgaas
2016-09-23 19:22 ` Christopher Covington
2016-11-24 11:05 ` [PATCH V6 1/1] ARM64/PCI: Manage controller-specific information on the host controller basis Tomasz Nowicki
2016-11-29 23:40 ` Bjorn Helgaas
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3a386ce0-33df-fb88-33df-88b9ca8816c7@redhat.com \
--to=jcm@redhat.com \
--cc=Liviu.Dudau@arm.com \
--cc=Lorenzo.Pieralisi@arm.com \
--cc=andrea.gallo@linaro.org \
--cc=ard.biesheuvel@linaro.org \
--cc=arnd@arndb.de \
--cc=catalin.marinas@arm.com \
--cc=cov@codeaurora.org \
--cc=ddaney@caviumnetworks.com \
--cc=dhdang@apm.com \
--cc=gabriele.paoloni@huawei.com \
--cc=hanjun.guo@linaro.org \
--cc=helgaas@kernel.org \
--cc=jchandra@broadcom.com \
--cc=jeremy.linton@arm.com \
--cc=jhugo@codeaurora.org \
--cc=linaro-acpi@lists.linaro.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=liudongdong3@huawei.com \
--cc=msalter@redhat.com \
--cc=mw@semihalf.com \
--cc=okaya@codeaurora.org \
--cc=rafael@kernel.org \
--cc=robert.richter@caviumnetworks.com \
--cc=tn@semihalf.com \
--cc=wangyijing@huawei.com \
--cc=will.deacon@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®