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[PATCH v1 1/3] arm/pci: allow designware-based hosts to have private data
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>
- Date: Mon, 7 Jul 2025 09:20:39 +0000
- Accept-language: en-US
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- Cc: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Mon, 07 Jul 2025 09:20:59 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHb7yBn813y1BMg2kOezoiTnMICsQ==
- Thread-topic: [PATCH v1 1/3] arm/pci: allow designware-based hosts to have private data
Introduce an additional private data field in `dw_pcie_priv` to allow
vendors to store custom data without interfering with bridge->priv.
Also add get/set pair to make accesing that private data less
cumbersome.
Signed-off-by: Mykyta Poturai <mykyta_poturai@xxxxxxxx>
---
xen/arch/arm/pci/pci-designware.c | 12 ++++++++++++
xen/arch/arm/pci/pci-designware.h | 4 ++++
2 files changed, 16 insertions(+)
diff --git a/xen/arch/arm/pci/pci-designware.c
b/xen/arch/arm/pci/pci-designware.c
index 47dd2dd4c0..0bd67524ac 100644
--- a/xen/arch/arm/pci/pci-designware.c
+++ b/xen/arch/arm/pci/pci-designware.c
@@ -403,3 +403,15 @@ dw_pcie_host_probe(struct dt_device_node *dev, const void
*data,
return bridge;
}
+
+void *dw_pcie_get_priv(struct pci_host_bridge *bridge)
+{
+ struct dw_pcie_priv *priv = bridge->priv;
+ return priv->priv;
+}
+
+void dw_pcie_set_priv(struct pci_host_bridge *bridge, void *other)
+{
+ struct dw_pcie_priv *priv = bridge->priv;
+ priv->priv = other;
+}
diff --git a/xen/arch/arm/pci/pci-designware.h
b/xen/arch/arm/pci/pci-designware.h
index 7efb1dc9a2..b9deb3b138 100644
--- a/xen/arch/arm/pci/pci-designware.h
+++ b/xen/arch/arm/pci/pci-designware.h
@@ -66,8 +66,12 @@ struct dw_pcie_priv {
bool iatu_unroll_enabled;
void __iomem *atu_base;
unsigned int version;
+ void *priv;
};
+void *dw_pcie_get_priv(struct pci_host_bridge *bridge);
+void dw_pcie_set_priv(struct pci_host_bridge *bridge, void *other);
+
void dw_pcie_set_version(struct pci_host_bridge *bridge, unsigned int version);
void __iomem *dw_pcie_child_map_bus(struct pci_host_bridge *bridge,
--
2.34.1
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