From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: bhelgaas@google.com, will@kernel.org, robh+dt@kernel.org,
lorenzo.pieralisi@arm.com, joro@8bytes.org,
baolu.lu@linux.intel.com, linux-doc@vger.kernel.org,
linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org, linux-acpi@vger.kernel.org,
iommu@lists.linux-foundation.org
Cc: corbet@lwn.net, mark.rutland@arm.com, liviu.dudau@arm.com,
sudeep.holla@arm.com, guohanjun@huawei.com, rjw@rjwysocki.net,
lenb@kernel.org, robin.murphy@arm.com, dwmw2@infradead.org,
amurray@thegoodpenguin.co.uk, frowand.list@gmail.com
Subject: [PATCH 03/11] PCI: OF: Check whether the host bridge supports ATS
Date: Thu, 13 Feb 2020 17:50:41 +0100 [thread overview]
Message-ID: <20200213165049.508908-4-jean-philippe@linaro.org> (raw)
In-Reply-To: <20200213165049.508908-1-jean-philippe@linaro.org>
Copy the ats-supported flag into the pci_host_bridge structure.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
drivers/pci/controller/pci-host-common.c | 1 +
drivers/pci/of.c | 9 +++++++++
include/linux/of_pci.h | 3 +++
3 files changed, 13 insertions(+)
diff --git a/drivers/pci/controller/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
index 250a3fc80ec6..a6ac927be291 100644
--- a/drivers/pci/controller/pci-host-common.c
+++ b/drivers/pci/controller/pci-host-common.c
@@ -92,6 +92,7 @@ int pci_host_common_probe(struct platform_device *pdev,
return ret;
}
+ of_pci_host_check_ats(bridge);
platform_set_drvdata(pdev, bridge->bus);
return 0;
}
diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index 81ceeaa6f1d5..4b8a877f1e9f 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -576,6 +576,15 @@ int pci_parse_request_of_pci_ranges(struct device *dev,
}
EXPORT_SYMBOL_GPL(pci_parse_request_of_pci_ranges);
+void of_pci_host_check_ats(struct pci_host_bridge *bridge)
+{
+ struct device_node *np = bridge->bus->dev.of_node;
+
+ if (!np)
+ return;
+
+ bridge->ats_supported = of_property_read_bool(np, "ats-supported");
+}
#endif /* CONFIG_PCI */
/**
diff --git a/include/linux/of_pci.h b/include/linux/of_pci.h
index 29658c0ee71f..2d0af410438c 100644
--- a/include/linux/of_pci.h
+++ b/include/linux/of_pci.h
@@ -7,12 +7,14 @@
struct pci_dev;
struct device_node;
+struct pci_host_bridge;
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_PCI)
struct device_node *of_pci_find_child_device(struct device_node *parent,
unsigned int devfn);
int of_pci_get_devfn(struct device_node *np);
void of_pci_check_probe_only(void);
+void of_pci_host_check_ats(struct pci_host_bridge *bridge);
#else
static inline struct device_node *of_pci_find_child_device(struct device_node *parent,
unsigned int devfn)
@@ -26,6 +28,7 @@ static inline int of_pci_get_devfn(struct device_node *np)
}
static inline void of_pci_check_probe_only(void) { }
+static inline void of_pci_host_check_ats(struct pci_host_bridge *bridge) { }
#endif
#if IS_ENABLED(CONFIG_OF_IRQ)
--
2.25.0
next prev parent reply other threads:[~2020-02-13 16:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-13 16:50 [PATCH 00/10] PCI/ATS: Device-tree support and other improvements Jean-Philippe Brucker
2020-02-13 16:50 ` [PATCH 01/11] dt-bindings: PCI: generic: Add ats-supported property Jean-Philippe Brucker
2020-02-19 22:24 ` Rob Herring
2020-02-13 16:50 ` [PATCH 02/11] PCI: Add ats_supported host bridge flag Jean-Philippe Brucker
2020-02-15 21:10 ` Bjorn Helgaas
2020-02-17 15:40 ` Jean-Philippe Brucker
2020-02-13 16:50 ` Jean-Philippe Brucker [this message]
2020-02-13 18:26 ` [PATCH 03/11] PCI: OF: Check whether the host bridge supports ATS Rob Herring
2020-02-17 12:40 ` Jean-Philippe Brucker
2020-02-13 16:50 ` [PATCH 04/11] ACPI/IORT: Check ATS capability in root complex node Jean-Philippe Brucker
2020-03-06 9:37 ` Hanjun Guo
2020-02-13 16:50 ` [PATCH 05/11] PCI/ATS: Gather checks into pci_ats_supported() Jean-Philippe Brucker
2020-02-13 16:50 ` [PATCH 06/11] iommu/amd: Use pci_ats_supported() Jean-Philippe Brucker
2020-02-13 16:50 ` [PATCH 07/11] iommu/arm-smmu-v3: " Jean-Philippe Brucker
2020-02-13 16:50 ` [PATCH 08/11] iommu/vt-d: " Jean-Philippe Brucker
2020-02-13 16:50 ` [PATCH 09/11] ACPI/IORT: Drop ATS fwspec flag Jean-Philippe Brucker
2020-03-06 9:42 ` Hanjun Guo
2020-02-13 16:50 ` [PATCH 10/11] arm64: dts: fast models: Enable PCIe ATS for Base RevC FVP Jean-Philippe Brucker
2020-02-13 16:50 ` [PATCH 11/11] Documentation: Generalize the "pci=noats" boot parameter Jean-Philippe Brucker
2020-02-19 10:42 ` [PATCH 00/10] PCI/ATS: Device-tree support and other improvements Joerg Roedel
2020-03-06 9:32 ` Hanjun Guo
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=20200213165049.508908-4-jean-philippe@linaro.org \
--to=jean-philippe@linaro.org \
--cc=amurray@thegoodpenguin.co.uk \
--cc=baolu.lu@linux.intel.com \
--cc=bhelgaas@google.com \
--cc=corbet@lwn.net \
--cc=devicetree@vger.kernel.org \
--cc=dwmw2@infradead.org \
--cc=frowand.list@gmail.com \
--cc=guohanjun@huawei.com \
--cc=iommu@lists.linux-foundation.org \
--cc=joro@8bytes.org \
--cc=lenb@kernel.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-pci@vger.kernel.org \
--cc=liviu.dudau@arm.com \
--cc=lorenzo.pieralisi@arm.com \
--cc=mark.rutland@arm.com \
--cc=rjw@rjwysocki.net \
--cc=robh+dt@kernel.org \
--cc=robin.murphy@arm.com \
--cc=sudeep.holla@arm.com \
--cc=will@kernel.org \
/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).