From: Jean-Philippe Brucker <jean-philippe@linaro.org>
To: bhelgaas@google.com, will@kernel.org, robh+dt@kernel.org,
joro@8bytes.org, baolu.lu@linux.intel.com, sudeep.holla@arm.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: lorenzo.pieralisi@arm.com, corbet@lwn.net, mark.rutland@arm.com,
liviu.dudau@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,
Jean-Philippe Brucker <jean-philippe@linaro.org>
Subject: [PATCH v2 03/11] PCI: OF: Check whether the host bridge supports ATS
Date: Wed, 11 Mar 2020 13:44:58 +0100 [thread overview]
Message-ID: <20200311124506.208376-4-jean-philippe@linaro.org> (raw)
In-Reply-To: <20200311124506.208376-1-jean-philippe@linaro.org>
When setting up a generic host on a device-tree based system, copy the
ats-supported flag into the pci_host_bridge structure.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
v1->v2: keep the helper in pci-host-common.c
---
drivers/pci/controller/pci-host-common.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/pci/controller/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
index 250a3fc80ec6..2e800bc6ae7a 100644
--- a/drivers/pci/controller/pci-host-common.c
+++ b/drivers/pci/controller/pci-host-common.c
@@ -54,6 +54,16 @@ static struct pci_config_window *gen_pci_init(struct device *dev,
return ERR_PTR(err);
}
+static 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");
+}
+
int pci_host_common_probe(struct platform_device *pdev,
struct pci_ecam_ops *ops)
{
@@ -92,6 +102,7 @@ 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;
}
--
2.25.1
next prev parent reply other threads:[~2020-03-11 12:47 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-11 12:44 [PATCH v2 00/11] PCI/ATS: Device-tree support and other improvements Jean-Philippe Brucker
2020-03-11 12:44 ` [PATCH v2 01/11] dt-bindings: PCI: generic: Add ats-supported property Jean-Philippe Brucker
2020-03-11 12:44 ` [PATCH v2 02/11] PCI: Add ats_supported host bridge flag Jean-Philippe Brucker
2020-03-12 21:21 ` Bjorn Helgaas
2020-03-11 12:44 ` Jean-Philippe Brucker [this message]
2020-03-12 20:45 ` [PATCH v2 03/11] PCI: OF: Check whether the host bridge supports ATS Bjorn Helgaas
2020-03-11 12:44 ` [PATCH v2 04/11] ACPI/IORT: Check ATS capability in root complex node Jean-Philippe Brucker
2020-03-12 20:58 ` Bjorn Helgaas
2020-03-11 12:45 ` [PATCH v2 05/11] PCI/ATS: Gather checks into pci_ats_supported() Jean-Philippe Brucker
2020-03-12 21:01 ` Bjorn Helgaas
2020-03-11 12:45 ` [PATCH v2 06/11] iommu/amd: Use pci_ats_supported() Jean-Philippe Brucker
2020-03-11 12:45 ` [PATCH v2 07/11] iommu/arm-smmu-v3: " Jean-Philippe Brucker
2020-03-18 21:49 ` Will Deacon
2020-03-11 12:45 ` [PATCH v2 08/11] iommu/vt-d: " Jean-Philippe Brucker
2020-03-12 1:44 ` Lu Baolu
2020-03-12 7:54 ` Jean-Philippe Brucker
2020-03-12 8:18 ` Lu Baolu
2020-03-11 12:45 ` [PATCH v2 09/11] ACPI/IORT: Drop ATS fwspec flag Jean-Philippe Brucker
2020-03-11 12:45 ` [PATCH v2 10/11] arm64: dts: fast models: Enable PCIe ATS for Base RevC FVP Jean-Philippe Brucker
2020-03-11 12:45 ` [PATCH v2 11/11] Documentation: Generalize the "pci=noats" boot parameter Jean-Philippe Brucker
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