| Message ID | 14b2e6e2624751503885092432323e231bd33597.1349749915.git.jbaron@redhat.com |
|---|---|
| State | New |
| Headers | show |
Il 09/10/2012 05:30, Jason Baron ha scritto: > From: Isaku Yamahata <yamahata@valinux.co.jp> > > Introduce pci_swizzle_map_irq_fn() for interrupt pin swizzle which is > standardized. PCI bridge swizzle is common logic, by introducing > this function duplicated swizzle logic will be avoided later. > > [jbaron@redhat.com: drop opaque argument] > Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> > Signed-off-by: Jason Baron <jbaron@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> > --- > hw/pci.c | 18 ++++++++++++++++++ > hw/pci.h | 2 ++ > 2 files changed, 20 insertions(+), 0 deletions(-) > > diff --git a/hw/pci.c b/hw/pci.c > index 85ebef6..c457d50 100644 > --- a/hw/pci.c > +++ b/hw/pci.c > @@ -1121,6 +1121,24 @@ void pci_device_set_intx_routing_notifier(PCIDevice *dev, > dev->intx_routing_notifier = notifier; > } > > +/* > + * PCI-to-PCI bridge specification > + * 9.1: Interrupt routing. Table 9-1 > + * > + * the PCI Express Base Specification, Revision 2.1 > + * 2.2.8.1: INTx interrutp signaling - Rules > + * the Implementation Note > + * Table 2-20 > + */ > +/* > + * 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD > + * 0-origin unlike PCI interrupt pin register. > + */ > +int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin) > +{ > + return (pin + PCI_SLOT(pci_dev->devfn)) % PCI_NUM_PINS; > +} > + > /***********************************************************/ > /* monitor info on PCI */ > > diff --git a/hw/pci.h b/hw/pci.h > index 4b6ab3d..397477e 100644 > --- a/hw/pci.h > +++ b/hw/pci.h > @@ -316,6 +316,8 @@ 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); > +/* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD */ > +int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin); > PCIBus *pci_register_bus(DeviceState *parent, const char *name, > pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, > void *irq_opaque, >
diff --git a/hw/pci.c b/hw/pci.c index 85ebef6..c457d50 100644 --- a/hw/pci.c +++ b/hw/pci.c @@ -1121,6 +1121,24 @@ void pci_device_set_intx_routing_notifier(PCIDevice *dev, dev->intx_routing_notifier = notifier; } +/* + * PCI-to-PCI bridge specification + * 9.1: Interrupt routing. Table 9-1 + * + * the PCI Express Base Specification, Revision 2.1 + * 2.2.8.1: INTx interrutp signaling - Rules + * the Implementation Note + * Table 2-20 + */ +/* + * 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD + * 0-origin unlike PCI interrupt pin register. + */ +int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin) +{ + return (pin + PCI_SLOT(pci_dev->devfn)) % PCI_NUM_PINS; +} + /***********************************************************/ /* monitor info on PCI */ diff --git a/hw/pci.h b/hw/pci.h index 4b6ab3d..397477e 100644 --- a/hw/pci.h +++ b/hw/pci.h @@ -316,6 +316,8 @@ 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); +/* 0 <= pin <= 3 0 = INTA, 1 = INTB, 2 = INTC, 3 = INTD */ +int pci_swizzle_map_irq_fn(PCIDevice *pci_dev, int pin); PCIBus *pci_register_bus(DeviceState *parent, const char *name, pci_set_irq_fn set_irq, pci_map_irq_fn map_irq, void *irq_opaque,