[RESEND PATCH v2 2/4] PCI: Add pci_check_platform_service_irqs

Stefan Roese
2022-01-12T09:43:02Z

From: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>

Adding method pci_check_platform_service_irqs to check if platform
has registered method to proivde dedicated IRQ lines for PCIe services
like AER.

Signed-off-by: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>
Cc: Bjorn Helgaas <helgaas@kernel.org>
Cc: Pali Rohár <pali@kernel.org>
Cc: Michal Simek <michal.simek@xilinx.com>
---
include/linux/pci.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 291eadade811..d6812d596ecc 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -2420,6 +2420,24 @@ static inline bool pci_ari_enabled(struct pci_bus *bus)
return bus->self && bus->self->ari_enabled;
}

+/**
+ * pci_check_platform_service_irqs - check platform service irq's
+ * @pdev: PCI Express device to check
+ * @irqs: Array of irqs to populate
+ * @mask: Bitmask of capabilities
+ */
+static inline void pci_check_platform_service_irqs(struct pci_dev *dev,
+ int *irqs, int mask)
+{
+ struct pci_host_bridge *bridge;
+
+ if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) {
+ bridge = pci_find_host_bridge(dev->bus);
+ if (bridge && bridge->setup_platform_service_irq)
+ bridge->setup_platform_service_irq(bridge, irqs, mask);
+ }
+}
+
/**
* pci_is_thunderbolt_attached - whether device is on a Thunderbolt daisy chain
* @pdev: PCI device to check
--
2.34.1