From patchwork Sat Mar 19 13:24:50 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v3,1/3] pci: add accessor function to get irq levels From: Isaku Yamahata X-Patchwork-Id: 87606 Message-Id: <6ed5cd6f756df50e689cd0a8c85e97b7ff6613c7.1300540833.git.yamahata@valinux.co.jp> To: qemu-devel@nongnu.org Cc: yamahata@valinux.co.jp, mst@redhat.com Date: Sat, 19 Mar 2011 22:24:50 +0900 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 --- hw/pci.c | 7 +++++++ hw/pci.h | 1 + 2 files changed, 8 insertions(+), 0 deletions(-) diff --git a/hw/pci.c b/hw/pci.c index 8b76cea..6ad3f10 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 113e556..092a463 100644 --- a/hw/pci.h +++ b/hw/pci.h @@ -233,6 +233,7 @@ void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent, PCIBus *pci_bus_new(DeviceState *parent, const char *name, int 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,