linux-pci.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Jonathan Chocron <jonnyc@amazon.com>
To: <lorenzo.pieralisi@arm.com>, <bhelgaas@google.com>,
	<jingoohan1@gmail.com>, <gustavo.pimentel@synopsys.com>,
	<robh+dt@kernel.org>, <mark.rutland@arm.com>
Cc: <andrew.murray@arm.com>, <dwmw@amazon.co.uk>,
	<benh@kernel.crashing.org>, <alisaidi@amazon.com>,
	<ronenk@amazon.com>, <barakw@amazon.com>, <talel@amazon.com>,
	<hanochu@amazon.com>, <hhhawa@amazon.com>,
	<linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<devicetree@vger.kernel.org>, <jonnyc@amazon.com>
Subject: [PATCH v5 3/7] PCI/VPD: Prevent VPD access for Amazon's Annapurna Labs Root Port
Date: Thu, 5 Sep 2019 17:00:17 +0300	[thread overview]
Message-ID: <20190905140018.5139-4-jonnyc@amazon.com> (raw)
In-Reply-To: <20190905140018.5139-1-jonnyc@amazon.com>

The Amazon Annapurna Labs PCIe Root Port exposes the VPD capability,
but there is no actual support for it.

Trying to access the VPD (for example, as part of lspci -vv or when
reading the vpd sysfs file), results in the following warning print:

pcieport 0001:00:00.0: VPD access failed.  This is likely a firmware bug on this device.  Contact the card vendor for a firmware update

Signed-off-by: Jonathan Chocron <jonnyc@amazon.com>
Reviewed-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
---
 drivers/pci/vpd.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c
index 4963c2e2bd4c..7915d10f9aa1 100644
--- a/drivers/pci/vpd.c
+++ b/drivers/pci/vpd.c
@@ -571,6 +571,12 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_LSI_LOGIC, 0x005f, quirk_blacklist_vpd);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, PCI_ANY_ID,
 		quirk_blacklist_vpd);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_QLOGIC, 0x2261, quirk_blacklist_vpd);
+/*
+ * The Amazon Annapurna Labs 0x0031 device id is reused for other non Root Port
+ * device types, so the quirk is registered for the PCI_CLASS_BRIDGE_PCI class.
+ */
+DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031,
+			      PCI_CLASS_BRIDGE_PCI, 8, quirk_blacklist_vpd);
 
 /*
  * For Broadcom 5706, 5708, 5709 rev. A nics, any read beyond the
-- 
2.17.1


  parent reply	other threads:[~2019-09-05 14:01 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-05 14:00 [PATCH v5 0/7] Amazon's Annapurna Labs DT-based PCIe host controller driver Jonathan Chocron
2019-09-05 14:00 ` [PATCH v5 1/7] PCI: Add Amazon's Annapurna Labs vendor ID Jonathan Chocron
2019-09-05 14:00 ` [PATCH v5 2/7] PCI: Add ACS quirk for Amazon Annapurna Labs root ports Jonathan Chocron
2019-09-07 16:54   ` Bjorn Helgaas
2019-09-11 14:59     ` Chocron, Jonathan
2019-09-05 14:00 ` Jonathan Chocron [this message]
2019-09-05 14:22   ` [PATCH v5 3/7] PCI/VPD: Prevent VPD access for Amazon's Annapurna Labs Root Port Andrew Murray
2019-09-07 16:55   ` Bjorn Helgaas
2019-09-11 15:01     ` Chocron, Jonathan
2019-09-05 14:00 ` [PATCH v5 4/7] PCI: Add quirk to disable MSI-X support " Jonathan Chocron
2019-09-07 16:55   ` Bjorn Helgaas
2019-09-10 17:38     ` Lorenzo Pieralisi
2019-09-11 15:34     ` Chocron, Jonathan
2019-09-05 14:01 ` [PATCH v5 5/7] dt-bindings: PCI: Add Amazon's Annapurna Labs PCIe host bridge binding Jonathan Chocron
2019-09-05 14:01 ` [PATCH v5 6/7] PCI: dwc: al: Add support for DW based driver type Jonathan Chocron
2019-09-07 16:55   ` Bjorn Helgaas
2019-09-12 12:55     ` Chocron, Jonathan
2019-09-05 14:01 ` [PATCH v5 7/7] PCI: dwc: Add validation that PCIe core is set to correct mode Jonathan Chocron
2019-09-05 14:27   ` Andrew Murray
2019-09-05 16:53 ` [PATCH v5 0/7] Amazon's Annapurna Labs DT-based PCIe host controller driver Lorenzo Pieralisi

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=20190905140018.5139-4-jonnyc@amazon.com \
    --to=jonnyc@amazon.com \
    --cc=alisaidi@amazon.com \
    --cc=andrew.murray@arm.com \
    --cc=barakw@amazon.com \
    --cc=benh@kernel.crashing.org \
    --cc=bhelgaas@google.com \
    --cc=devicetree@vger.kernel.org \
    --cc=dwmw@amazon.co.uk \
    --cc=gustavo.pimentel@synopsys.com \
    --cc=hanochu@amazon.com \
    --cc=hhhawa@amazon.com \
    --cc=jingoohan1@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pci@vger.kernel.org \
    --cc=lorenzo.pieralisi@arm.com \
    --cc=mark.rutland@arm.com \
    --cc=robh+dt@kernel.org \
    --cc=ronenk@amazon.com \
    --cc=talel@amazon.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;
as well as URLs for NNTP newsgroup(s).