From: Yongji Xie <elohimes@xxxxxxxxx>
Any IODA host bridge have the capability of IRQ remapping.
So we set PCI_BUS_FLAGS_MSI_REMAP when this kind of host birdge
is detected.
Signed-off-by: Yongji Xie <xyjxie@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
---
arch/powerpc/platforms/powernv/pci-ioda.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index 283caf1070c9..8456e07cfc68 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -3177,6 +3177,12 @@ static void pnv_pci_ioda_fixup(void)
#endif
}
+int pnv_pci_ioda_root_bridge_prepare(struct pci_host_bridge *bridge)
+{
+ bridge->bus->bus_flags |= PCI_BUS_FLAGS_MSI_REMAP;
+ return 0;
+}
+
/*
* Returns the alignment for I/O or memory windows for P2P
* bridges. That actually depends on how PEs are segmented.
@@ -3860,6 +3866,7 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
* the child P2P bridges) can form individual PE.
*/
ppc_md.pcibios_fixup = pnv_pci_ioda_fixup;
+ ppc_md.pcibios_root_bridge_prepare = pnv_pci_ioda_root_bridge_prepare;
if (phb->type == PNV_PHB_NPU) {
hose->controller_ops = pnv_npu_ioda_controller_ops;
--
2.11.0
