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| author | David Gibson <david@gibson.dropbear.id.au> | 2019-04-24 14:19:58 +1000 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-05-20 18:40:02 -0400 |
| commit | b0e5196a52248d7e4eef709481c1c530c1bca6df (patch) | |
| tree | 6008b4126f8c073bf311599a4b7ea99fbf650dbf /include/hw | |
| parent | c76efd7225d33b48f7a1dd4519620f0b50267612 (diff) | |
| download | qemu-b0e5196a52248d7e4eef709481c1c530c1bca6df.zip qemu-b0e5196a52248d7e4eef709481c1c530c1bca6df.tar.gz qemu-b0e5196a52248d7e4eef709481c1c530c1bca6df.tar.bz2 | |
pci: Simplify pci_bus_is_root()
pci_bus_is_root() currently relies on a method in the PCIBusClass.
But it's always known if a PCI bus is a root bus when we create it, so
using a dynamic method is overkill.
This replaces it with an IS_ROOT bit in a new flags field, which is set on
root buses and otherwise clear. As a bonus this removes the special
is_root logic from pci_expander_bridge, since it already creates its bus
as a root bus.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20190424041959.4087-3-david@gibson.dropbear.id.au>
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/pci/pci.h | 1 | ||||
| -rw-r--r-- | include/hw/pci/pci_bus.h | 12 |
2 files changed, 11 insertions, 2 deletions
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index fdd4c43..edf44de 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -395,7 +395,6 @@ typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, int pin); #define TYPE_PCIE_BUS "PCIE" bool pci_bus_is_express(PCIBus *bus); -bool pci_bus_is_root(PCIBus *bus); bool pci_bus_allows_extended_config_space(PCIBus *bus); void pci_root_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, diff --git a/include/hw/pci/pci_bus.h b/include/hw/pci/pci_bus.h index f6df834..aea98d5 100644 --- a/include/hw/pci/pci_bus.h +++ b/include/hw/pci/pci_bus.h @@ -15,14 +15,19 @@ typedef struct PCIBusClass { BusClass parent_class; /*< public >*/ - bool (*is_root)(PCIBus *bus); int (*bus_num)(PCIBus *bus); uint16_t (*numa_node)(PCIBus *bus); bool (*allows_extended_config_space)(PCIBus *bus); } PCIBusClass; +enum PCIBusFlags { + /* This bus is the root of a PCI domain */ + PCI_BUS_IS_ROOT = 0x0001, +}; + struct PCIBus { BusState qbus; + enum PCIBusFlags flags; PCIIOMMUFunc iommu_fn; void *iommu_opaque; uint8_t devfn_min; @@ -47,4 +52,9 @@ struct PCIBus { Notifier machine_done; }; +static inline bool pci_bus_is_root(PCIBus *bus) +{ + return !!(bus->flags & PCI_BUS_IS_ROOT); +} + #endif /* QEMU_PCI_BUS_H */ |