Xilinx ZynqMP PS PCIe does not report AER interrupts using Advanced Error Interrupt Message Number. The controller has dedicated interrupt line for reporting PCIe errors along with AER.
Using pci_dev->sysdata of root port to save controller irq number, which will be used for registering AER irq handler. Signed-off-by: Bharat Kumar Gogada <[email protected]> --- drivers/pci/quirks.c | 29 +++++++++++++++++++++++++++++ 1 files changed, 29 insertions(+), 0 deletions(-) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index f439de8..e666373 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4753,3 +4753,32 @@ static void quirk_gpu_hda(struct pci_dev *hda) PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda); DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda); + +#if defined(CONFIG_ARCH_ZYNQMP) && defined(CONFIG_PCIE_XILINX_NWL) && \ + defined(CONFIG_PCIEAER) +/* + * Xilinx ZynqMP PS PCIe does not report AER interrupts using Advanced + * Error Interrupt Message Number. The controller has dedicated interrupt line + * for reporting PCIe errors along with AER. + */ +#include <linux/of.h> +#include <linux/of_irq.h> + +static void quirk_xilinx_aer_irq(struct pci_dev *dev) +{ + struct device_node *dev_node; + + if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT && + pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR)) { + dev_node = of_find_compatible_node(NULL, NULL, + "xlnx,nwl-pcie-2.11"); + if (!dev_node) { + dev_err(&dev->dev, "Error could not find ZynqMP PS PCIe node\n"); + return; + } + + dev->sysdata = dev_node->data; + } +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_XILINX, PCI_ANY_ID, quirk_xilinx_aer_irq); +#endif -- 1.7.1
