Commit 9ddf8437 authored by Isaku Yamahata's avatar Isaku Yamahata Committed by Michael S. Tsirkin
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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 <mst@redhat.com>
Signed-off-by: default avatarIsaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent 41e7313f
......@@ -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)
......
......@@ -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,
......
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