From 9ddf8437856539c352070dee0e9fb6a33ab6ff5c Mon Sep 17 00:00:00 2001 From: Isaku Yamahata Date: Fri, 1 Apr 2011 20:43:21 +0900 Subject: [PATCH] pci: add accessor function to get irq levels Introduce accessor function to know INTx levels. It will be used later by q35. Although piix_pci tracks the intx line levels, it can be eliminated by this helper function. Cc: Michael S. Tsirkin Signed-off-by: Isaku Yamahata Signed-off-by: Michael S. Tsirkin --- hw/pci.c | 7 +++++++ hw/pci.h | 1 + 2 files changed, 8 insertions(+) diff --git a/hw/pci.c b/hw/pci.c index 6b577e1e3e..3ee48715fc 100644 --- a/hw/pci.c +++ b/hw/pci.c @@ -126,6 +126,13 @@ static void pci_change_irq_level(PCIDevice *pci_dev, int irq_num, int change) bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0); } +int pci_bus_get_irq_level(PCIBus *bus, int irq_num) +{ + assert(irq_num >= 0); + assert(irq_num < bus->nirq); + return !!bus->irq_count[irq_num]; +} + /* Update interrupt status bit in config space on interrupt * state change. */ static void pci_update_irq_status(PCIDevice *dev) diff --git a/hw/pci.h b/hw/pci.h index 52ee8c9c5b..a5f875d06b 100644 --- a/hw/pci.h +++ b/hw/pci.h @@ -234,6 +234,7 @@ void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent, PCIBus *pci_bus_new(DeviceState *parent, const char *name, uint8_t devfn_min); void pci_bus_irqs(PCIBus *bus, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, void *irq_opaque, int nirq); +int pci_bus_get_irq_level(PCIBus *bus, int irq_num); void pci_bus_hotplug(PCIBus *bus, pci_hotplug_fn hotplug, DeviceState *dev); PCIBus *pci_register_bus(DeviceState *parent, const char *name, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, -- GitLab