From 5cc7a967e9de8c7b16c15aee4cb9f5bfcf0c5989 Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Thu, 26 Sep 2013 16:18:48 +1000 Subject: [PATCH] spapr-pci: enable irqfd for INTx This enables IRQFD for LSI (level triggered INTx interrupts) by adding a spapr_route_intx_pin_to_irq() callback to the sPAPR PCI host bus. This callback is called to know the global interrupt number to link resampling fd with IRQFD's fd in KVM. Signed-off-by: Alexey Kardashevskiy Signed-off-by: Alexander Graf --- hw/ppc/spapr_pci.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index 9b6ee32acf..edb4cb0413 100644 --- a/hw/ppc/spapr_pci.c +++ b/hw/ppc/spapr_pci.c @@ -432,6 +432,17 @@ static void pci_spapr_set_irq(void *opaque, int irq_num, int level) qemu_set_irq(spapr_phb_lsi_qirq(phb, irq_num), level); } +static PCIINTxRoute spapr_route_intx_pin_to_irq(void *opaque, int pin) +{ + sPAPRPHBState *sphb = SPAPR_PCI_HOST_BRIDGE(opaque); + PCIINTxRoute route; + + route.mode = PCI_INTX_ENABLED; + route.irq = sphb->lsi_table[pin].irq; + + return route; +} + /* * MSI/MSIX memory region implementation. * The handler handles both MSI and MSIX. @@ -610,6 +621,8 @@ static int spapr_phb_init(SysBusDevice *s) pci_setup_iommu(bus, spapr_pci_dma_iommu, sphb); + pci_bus_set_route_irq_fn(bus, spapr_route_intx_pin_to_irq); + QLIST_INSERT_HEAD(&spapr->phbs, sphb, list); /* Initialize the LSI table */ -- 2.11.0