Message ID | 1426791181-23831-11-git-send-email-marcel@redhat.com |
---|---|
State | New |
Headers | show |
On Thu, Mar 19, 2015 at 08:52:45PM +0200, Marcel Apfelbaum wrote: > From: Marcel Apfelbaum <marcel.a@redhat.com> > > Refactoring it as a method of PCIBusClass will allow > different implementations for subclasses. > > Removed the assumption that the root bus does not > have a parent device because is specific only > to the default class implementation. > > Signed-off-by: Marcel Apfelbaum <marcel@redhat.com> Or just add bool is_root there? Won't that be simpler? > --- > hw/pci/pci.c | 11 ++++------- > hw/pci/pci_bus.c | 9 +++++++++ > hw/vfio/pci.c | 1 + > include/hw/pci/pci.h | 1 - > include/hw/pci/pci_bus.h | 15 +++++++++++++++ > 5 files changed, 29 insertions(+), 8 deletions(-) > > diff --git a/hw/pci/pci.c b/hw/pci/pci.c > index cb63a21..376b42d 100644 > --- a/hw/pci/pci.c > +++ b/hw/pci/pci.c > @@ -205,7 +205,10 @@ PCIBus *pci_device_root_bus(const PCIDevice *d) > { > PCIBus *bus = d->bus; > > - while ((d = bus->parent_dev) != NULL) { > + while (!pci_bus_is_root(bus)) { > + d = bus->parent_dev; > + assert(d != NULL); > + > bus = d->bus; > } > > @@ -218,7 +221,6 @@ const char *pci_root_bus_path(PCIDevice *dev) > PCIHostState *host_bridge = PCI_HOST_BRIDGE(rootbus->qbus.parent); > PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_GET_CLASS(host_bridge); > > - assert(!rootbus->parent_dev); > assert(host_bridge->bus == rootbus); > > if (hc->root_bus_path) { > @@ -250,11 +252,6 @@ bool pci_bus_is_express(PCIBus *bus) > return object_dynamic_cast(OBJECT(bus), TYPE_PCIE_BUS); > } > > -bool pci_bus_is_root(PCIBus *bus) > -{ > - return !bus->parent_dev; > -} > - > void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, > const char *name, > MemoryRegion *address_space_mem, > diff --git a/hw/pci/pci_bus.c b/hw/pci/pci_bus.c > index d156194..0922a75 100644 > --- a/hw/pci/pci_bus.c > +++ b/hw/pci/pci_bus.c > @@ -464,9 +464,15 @@ static void pcibus_reset(BusState *qbus) > } > } > > +static bool pcibus_is_root(PCIBus *bus) > +{ > + return !bus->parent_dev; > +} > + > static void pci_bus_class_init(ObjectClass *klass, void *data) > { > BusClass *k = BUS_CLASS(klass); > + PCIBusClass *pbc = PCI_BUS_CLASS(klass); > > k->print_dev = pcibus_dev_print; > k->get_dev_path = pcibus_get_dev_path; > @@ -474,11 +480,14 @@ static void pci_bus_class_init(ObjectClass *klass, void *data) > k->realize = pci_bus_realize; > k->unrealize = pci_bus_unrealize; > k->reset = pcibus_reset; > + > + pbc->is_root = pcibus_is_root; > } > > static const TypeInfo pci_bus_info = { > .name = TYPE_PCI_BUS, > .parent = TYPE_BUS, > + .class_size = sizeof(PCIBusClass), > .instance_size = sizeof(PCIBus), > .class_init = pci_bus_class_init, > }; > diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c > index 6b80539..7b08d03 100644 > --- a/hw/vfio/pci.c > +++ b/hw/vfio/pci.c > @@ -32,6 +32,7 @@ > #include "hw/pci/msi.h" > #include "hw/pci/msix.h" > #include "hw/pci/pci.h" > +#include "hw/pci/pci_bus.h" > #include "qemu-common.h" > #include "qemu/error-report.h" > #include "qemu/event_notifier.h" > diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h > index 47077cd..ae2c4a5 100644 > --- a/include/hw/pci/pci.h > +++ b/include/hw/pci/pci.h > @@ -340,7 +340,6 @@ 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); > void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, > const char *name, > MemoryRegion *address_space_mem, > diff --git a/include/hw/pci/pci_bus.h b/include/hw/pci/pci_bus.h > index ea427a3..306ef10 100644 > --- a/include/hw/pci/pci_bus.h > +++ b/include/hw/pci/pci_bus.h > @@ -15,6 +15,16 @@ PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num); > > #define TYPE_PCI_BUS "PCI" > #define PCI_BUS(obj) OBJECT_CHECK(PCIBus, (obj), TYPE_PCI_BUS) > +#define PCI_BUS_CLASS(klass) OBJECT_CLASS_CHECK(PCIBusClass, (klass), TYPE_PCI_BUS) > +#define PCI_BUS_GET_CLASS(obj) OBJECT_GET_CLASS(PCIBusClass, (obj), TYPE_PCI_BUS) > + > +typedef struct PCIBusClass { > + /*< private >*/ > + BusClass parent_class; > + /*< public >*/ > + > + bool (*is_root)(PCIBus *bus); > +} PCIBusClass; > > struct PCIBus { > BusState qbus; > @@ -39,6 +49,11 @@ struct PCIBus { > int *irq_count; > }; > > +static inline bool pci_bus_is_root(PCIBus *bus) > +{ > + return PCI_BUS_GET_CLASS(bus)->is_root(bus); > +} > + > typedef struct PCIBridgeWindows PCIBridgeWindows; > > /* > -- > 2.1.0
On 04/27/2015 02:37 PM, Michael S. Tsirkin wrote: > On Thu, Mar 19, 2015 at 08:52:45PM +0200, Marcel Apfelbaum wrote: >> From: Marcel Apfelbaum <marcel.a@redhat.com> >> >> Refactoring it as a method of PCIBusClass will allow >> different implementations for subclasses. >> >> Removed the assumption that the root bus does not >> have a parent device because is specific only >> to the default class implementation. >> >> Signed-off-by: Marcel Apfelbaum <marcel@redhat.com> > > Or just add bool is_root there? > Won't that be simpler? A field instead of a method? I am not sure it will be less code lines. Thanks, Marcel > >> --- >> hw/pci/pci.c | 11 ++++------- >> hw/pci/pci_bus.c | 9 +++++++++ >> hw/vfio/pci.c | 1 + >> include/hw/pci/pci.h | 1 - >> include/hw/pci/pci_bus.h | 15 +++++++++++++++ >> 5 files changed, 29 insertions(+), 8 deletions(-) >> >> diff --git a/hw/pci/pci.c b/hw/pci/pci.c >> index cb63a21..376b42d 100644 >> --- a/hw/pci/pci.c >> +++ b/hw/pci/pci.c >> @@ -205,7 +205,10 @@ PCIBus *pci_device_root_bus(const PCIDevice *d) >> { >> PCIBus *bus = d->bus; >> >> - while ((d = bus->parent_dev) != NULL) { >> + while (!pci_bus_is_root(bus)) { >> + d = bus->parent_dev; >> + assert(d != NULL); >> + >> bus = d->bus; >> } >> >> @@ -218,7 +221,6 @@ const char *pci_root_bus_path(PCIDevice *dev) >> PCIHostState *host_bridge = PCI_HOST_BRIDGE(rootbus->qbus.parent); >> PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_GET_CLASS(host_bridge); >> >> - assert(!rootbus->parent_dev); >> assert(host_bridge->bus == rootbus); >> >> if (hc->root_bus_path) { >> @@ -250,11 +252,6 @@ bool pci_bus_is_express(PCIBus *bus) >> return object_dynamic_cast(OBJECT(bus), TYPE_PCIE_BUS); >> } >> >> -bool pci_bus_is_root(PCIBus *bus) >> -{ >> - return !bus->parent_dev; >> -} >> - >> void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, >> const char *name, >> MemoryRegion *address_space_mem, >> diff --git a/hw/pci/pci_bus.c b/hw/pci/pci_bus.c >> index d156194..0922a75 100644 >> --- a/hw/pci/pci_bus.c >> +++ b/hw/pci/pci_bus.c >> @@ -464,9 +464,15 @@ static void pcibus_reset(BusState *qbus) >> } >> } >> >> +static bool pcibus_is_root(PCIBus *bus) >> +{ >> + return !bus->parent_dev; >> +} >> + >> static void pci_bus_class_init(ObjectClass *klass, void *data) >> { >> BusClass *k = BUS_CLASS(klass); >> + PCIBusClass *pbc = PCI_BUS_CLASS(klass); >> >> k->print_dev = pcibus_dev_print; >> k->get_dev_path = pcibus_get_dev_path; >> @@ -474,11 +480,14 @@ static void pci_bus_class_init(ObjectClass *klass, void *data) >> k->realize = pci_bus_realize; >> k->unrealize = pci_bus_unrealize; >> k->reset = pcibus_reset; >> + >> + pbc->is_root = pcibus_is_root; >> } >> >> static const TypeInfo pci_bus_info = { >> .name = TYPE_PCI_BUS, >> .parent = TYPE_BUS, >> + .class_size = sizeof(PCIBusClass), >> .instance_size = sizeof(PCIBus), >> .class_init = pci_bus_class_init, >> }; >> diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c >> index 6b80539..7b08d03 100644 >> --- a/hw/vfio/pci.c >> +++ b/hw/vfio/pci.c >> @@ -32,6 +32,7 @@ >> #include "hw/pci/msi.h" >> #include "hw/pci/msix.h" >> #include "hw/pci/pci.h" >> +#include "hw/pci/pci_bus.h" >> #include "qemu-common.h" >> #include "qemu/error-report.h" >> #include "qemu/event_notifier.h" >> diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h >> index 47077cd..ae2c4a5 100644 >> --- a/include/hw/pci/pci.h >> +++ b/include/hw/pci/pci.h >> @@ -340,7 +340,6 @@ 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); >> void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, >> const char *name, >> MemoryRegion *address_space_mem, >> diff --git a/include/hw/pci/pci_bus.h b/include/hw/pci/pci_bus.h >> index ea427a3..306ef10 100644 >> --- a/include/hw/pci/pci_bus.h >> +++ b/include/hw/pci/pci_bus.h >> @@ -15,6 +15,16 @@ PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num); >> >> #define TYPE_PCI_BUS "PCI" >> #define PCI_BUS(obj) OBJECT_CHECK(PCIBus, (obj), TYPE_PCI_BUS) >> +#define PCI_BUS_CLASS(klass) OBJECT_CLASS_CHECK(PCIBusClass, (klass), TYPE_PCI_BUS) >> +#define PCI_BUS_GET_CLASS(obj) OBJECT_GET_CLASS(PCIBusClass, (obj), TYPE_PCI_BUS) >> + >> +typedef struct PCIBusClass { >> + /*< private >*/ >> + BusClass parent_class; >> + /*< public >*/ >> + >> + bool (*is_root)(PCIBus *bus); >> +} PCIBusClass; >> >> struct PCIBus { >> BusState qbus; >> @@ -39,6 +49,11 @@ struct PCIBus { >> int *irq_count; >> }; >> >> +static inline bool pci_bus_is_root(PCIBus *bus) >> +{ >> + return PCI_BUS_GET_CLASS(bus)->is_root(bus); >> +} >> + >> typedef struct PCIBridgeWindows PCIBridgeWindows; >> >> /* >> -- >> 2.1.0
diff --git a/hw/pci/pci.c b/hw/pci/pci.c index cb63a21..376b42d 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -205,7 +205,10 @@ PCIBus *pci_device_root_bus(const PCIDevice *d) { PCIBus *bus = d->bus; - while ((d = bus->parent_dev) != NULL) { + while (!pci_bus_is_root(bus)) { + d = bus->parent_dev; + assert(d != NULL); + bus = d->bus; } @@ -218,7 +221,6 @@ const char *pci_root_bus_path(PCIDevice *dev) PCIHostState *host_bridge = PCI_HOST_BRIDGE(rootbus->qbus.parent); PCIHostBridgeClass *hc = PCI_HOST_BRIDGE_GET_CLASS(host_bridge); - assert(!rootbus->parent_dev); assert(host_bridge->bus == rootbus); if (hc->root_bus_path) { @@ -250,11 +252,6 @@ bool pci_bus_is_express(PCIBus *bus) return object_dynamic_cast(OBJECT(bus), TYPE_PCIE_BUS); } -bool pci_bus_is_root(PCIBus *bus) -{ - return !bus->parent_dev; -} - void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, const char *name, MemoryRegion *address_space_mem, diff --git a/hw/pci/pci_bus.c b/hw/pci/pci_bus.c index d156194..0922a75 100644 --- a/hw/pci/pci_bus.c +++ b/hw/pci/pci_bus.c @@ -464,9 +464,15 @@ static void pcibus_reset(BusState *qbus) } } +static bool pcibus_is_root(PCIBus *bus) +{ + return !bus->parent_dev; +} + static void pci_bus_class_init(ObjectClass *klass, void *data) { BusClass *k = BUS_CLASS(klass); + PCIBusClass *pbc = PCI_BUS_CLASS(klass); k->print_dev = pcibus_dev_print; k->get_dev_path = pcibus_get_dev_path; @@ -474,11 +480,14 @@ static void pci_bus_class_init(ObjectClass *klass, void *data) k->realize = pci_bus_realize; k->unrealize = pci_bus_unrealize; k->reset = pcibus_reset; + + pbc->is_root = pcibus_is_root; } static const TypeInfo pci_bus_info = { .name = TYPE_PCI_BUS, .parent = TYPE_BUS, + .class_size = sizeof(PCIBusClass), .instance_size = sizeof(PCIBus), .class_init = pci_bus_class_init, }; diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 6b80539..7b08d03 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -32,6 +32,7 @@ #include "hw/pci/msi.h" #include "hw/pci/msix.h" #include "hw/pci/pci.h" +#include "hw/pci/pci_bus.h" #include "qemu-common.h" #include "qemu/error-report.h" #include "qemu/event_notifier.h" diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index 47077cd..ae2c4a5 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -340,7 +340,6 @@ 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); void pci_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, const char *name, MemoryRegion *address_space_mem, diff --git a/include/hw/pci/pci_bus.h b/include/hw/pci/pci_bus.h index ea427a3..306ef10 100644 --- a/include/hw/pci/pci_bus.h +++ b/include/hw/pci/pci_bus.h @@ -15,6 +15,16 @@ PciDeviceInfoList *qmp_query_pci_devices(PCIBus *bus, int bus_num); #define TYPE_PCI_BUS "PCI" #define PCI_BUS(obj) OBJECT_CHECK(PCIBus, (obj), TYPE_PCI_BUS) +#define PCI_BUS_CLASS(klass) OBJECT_CLASS_CHECK(PCIBusClass, (klass), TYPE_PCI_BUS) +#define PCI_BUS_GET_CLASS(obj) OBJECT_GET_CLASS(PCIBusClass, (obj), TYPE_PCI_BUS) + +typedef struct PCIBusClass { + /*< private >*/ + BusClass parent_class; + /*< public >*/ + + bool (*is_root)(PCIBus *bus); +} PCIBusClass; struct PCIBus { BusState qbus; @@ -39,6 +49,11 @@ struct PCIBus { int *irq_count; }; +static inline bool pci_bus_is_root(PCIBus *bus) +{ + return PCI_BUS_GET_CLASS(bus)->is_root(bus); +} + typedef struct PCIBridgeWindows PCIBridgeWindows; /*