Message ID | 1357224744-14443-5-git-send-email-fred.konrad@greensocs.com |
---|---|
State | New |
Headers | show |
On Thu, Jan 3, 2013 at 2:52 PM, <fred.konrad@greensocs.com> wrote: > From: KONRAD Frederic <fred.konrad@greensocs.com> > > Create the virtio-pci device. This transport device will create a > virtio-pci-bus, so one VirtIODevice can be connected. > > Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com> > --- > hw/virtio-pci.c | 133 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > hw/virtio-pci.h | 18 ++++++++ > 2 files changed, 151 insertions(+) > > diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c > index 3f14be2..e63ec59 100644 > --- a/hw/virtio-pci.c > +++ b/hw/virtio-pci.c > @@ -1117,6 +1117,136 @@ static TypeInfo virtio_scsi_info = { > .class_init = virtio_scsi_class_init, > }; > > +/* > + * virtio-pci : This is the PCIDevice which have a virtio-pci-bus. > + */ > + > +/* This is called by virtio-bus just after the device is plugged. */ > +static void virtio_pci_device_plugged(void *opaque) > +{ > + VirtIOPCIProxy *proxy = VIRTIO_PCI(opaque); > + VirtioBusState *bus = proxy->bus; > + uint8_t *config; > + uint32_t size; > + > + /* Put the PCI IDs */ > + switch (virtio_device_get_id(proxy->bus)) { > + > + > + default: > + error_report("unknown device id\n"); > + break; Wrong indentation. > + > + } > + > + /* > + * vdev shouldn't be accessed directly by virtio-pci. > + * We will remove that at the end of the series to keep virtio-x-pci > + * working. > + */ > + proxy->vdev = proxy->bus->vdev; > + > + config = proxy->pci_dev.config; > + if (proxy->class_code) { > + pci_config_set_class(config, proxy->class_code); > + } > + pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, > + pci_get_word(config + PCI_VENDOR_ID)); > + pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_device_get_id(proxy->bus)); > + config[PCI_INTERRUPT_PIN] = 1; > + > + if (virtio_device_get_nvectors(bus) && > + msix_init_exclusive_bar(&proxy->pci_dev, > + virtio_device_get_nvectors(bus), 1)) { > + virtio_device_set_nvectors(bus, 0); > + } > + > + proxy->pci_dev.config_write = virtio_write_config; > + > + size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) > + + virtio_device_get_config_len(bus); > + if (size & (size-1)) { Spaces around '-'. > + size = 1 << qemu_fls(size); > + } > + > + memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, > + "virtio-pci", size); > + pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, > + &proxy->bar); > + > + if (!kvm_has_many_ioeventfds()) { > + proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; > + } > + > + proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; > + proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE; > + proxy->host_features = virtio_device_get_features(bus, > + proxy->host_features); > +} > + > +/* This is called by virtio-bus just before the device is unplugged. */ > +static void virtio_pci_device_unplug(void *opaque) > +{ > + VirtIOPCIProxy *dev = VIRTIO_PCI(opaque); > + virtio_pci_stop_ioeventfd(dev); > +} > + > +static int virtio_pci_init(PCIDevice *pci_dev) > +{ > + VirtIOPCIProxy *dev = VIRTIO_PCI(pci_dev); > + VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev); > + dev->bus = virtio_pci_bus_new(dev); > + if (k->init != NULL) { > + return k->init(dev); > + } > + return 0; > +} > + > +static void virtio_pci_exit(PCIDevice *pci_dev) > +{ > + VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev); > + VirtioBusState *bus = VIRTIO_BUS(proxy->bus); > + BusState *qbus = BUS(proxy->bus); > + virtio_bus_destroy_device(bus); > + qbus_free(qbus); > + virtio_exit_pci(pci_dev); > +} > + > +/* > + * This will be renamed virtio_pci_reset at the end of the series. > + * virtio_pci_reset is still in use at this moment. > + */ > +static void virtio_pci_rst(DeviceState *qdev) > +{ > + VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev); > + VirtioBusState *bus = VIRTIO_BUS(proxy->bus); > + virtio_pci_stop_ioeventfd(proxy); > + virtio_bus_reset(bus); > + msix_unuse_all_vectors(&proxy->pci_dev); > + proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; > +} > + > +static void virtio_pci_class_init(ObjectClass *klass, void *data) > +{ > + DeviceClass *dc = DEVICE_CLASS(klass); > + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); > + > + k->init = virtio_pci_init; > + k->exit = virtio_pci_exit; > + k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; > + k->revision = VIRTIO_PCI_ABI_VERSION; > + k->class_id = PCI_CLASS_OTHERS; > + dc->reset = virtio_pci_rst; > +} > + > +static const TypeInfo virtio_pci_info = { > + .name = TYPE_VIRTIO_PCI, > + .parent = TYPE_PCI_DEVICE, > + .instance_size = sizeof(VirtIOPCIProxy), > + .class_init = virtio_pci_class_init, > + .class_size = sizeof(VirtioPCIClass), > +}; > + > /* virtio-pci-bus */ > > VirtioBusState *virtio_pci_bus_new(VirtIOPCIProxy *dev) > @@ -1143,6 +1273,8 @@ static void virtio_pci_bus_class_init(ObjectClass *klass, void *data) > k->set_host_notifier = virtio_pci_set_host_notifier; > k->set_guest_notifiers = virtio_pci_set_guest_notifiers; > k->vmstate_change = virtio_pci_vmstate_change; > + k->device_plugged = virtio_pci_device_plugged; > + k->device_unplug = virtio_pci_device_unplug; > } > > static const TypeInfo virtio_pci_bus_info = { > @@ -1161,6 +1293,7 @@ static void virtio_pci_register_types(void) > type_register_static(&virtio_scsi_info); > type_register_static(&virtio_rng_info); > type_register_static(&virtio_pci_bus_info); > + type_register_static(&virtio_pci_info); > } > > type_init(virtio_pci_register_types) > diff --git a/hw/virtio-pci.h b/hw/virtio-pci.h > index 0e3288e..e330e57 100644 > --- a/hw/virtio-pci.h > +++ b/hw/virtio-pci.h > @@ -46,6 +46,22 @@ typedef struct { > unsigned int users; > } VirtIOIRQFD; > > +/* > + * virtio-pci : This is the PCIDevice which have a virtio-pci-bus. > + */ > +#define TYPE_VIRTIO_PCI "virtio-pci" > +#define VIRTIO_PCI_GET_CLASS(obj) \ > + OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI) > +#define VIRTIO_PCI_CLASS(klass) \ > + OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI) > +#define VIRTIO_PCI(obj) \ > + OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI) > + > +typedef struct VirtioPCIClass { > + PCIDeviceClass parent_class; > + int (*init)(VirtIOPCIProxy *vpci_dev); > +} VirtioPCIClass; > + > struct VirtIOPCIProxy { > PCIDevice pci_dev; > VirtIODevice *vdev; > @@ -66,6 +82,8 @@ struct VirtIOPCIProxy { > bool ioeventfd_disabled; > bool ioeventfd_started; > VirtIOIRQFD *vector_irqfd; > + /* That's the virtio-bus on which VirtioDevice will be connected. */ > + VirtioBusState *bus; > }; > > void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev); > -- > 1.7.11.7 > >
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index 3f14be2..e63ec59 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -1117,6 +1117,136 @@ static TypeInfo virtio_scsi_info = { .class_init = virtio_scsi_class_init, }; +/* + * virtio-pci : This is the PCIDevice which have a virtio-pci-bus. + */ + +/* This is called by virtio-bus just after the device is plugged. */ +static void virtio_pci_device_plugged(void *opaque) +{ + VirtIOPCIProxy *proxy = VIRTIO_PCI(opaque); + VirtioBusState *bus = proxy->bus; + uint8_t *config; + uint32_t size; + + /* Put the PCI IDs */ + switch (virtio_device_get_id(proxy->bus)) { + + + default: + error_report("unknown device id\n"); + break; + + } + + /* + * vdev shouldn't be accessed directly by virtio-pci. + * We will remove that at the end of the series to keep virtio-x-pci + * working. + */ + proxy->vdev = proxy->bus->vdev; + + config = proxy->pci_dev.config; + if (proxy->class_code) { + pci_config_set_class(config, proxy->class_code); + } + pci_set_word(config + PCI_SUBSYSTEM_VENDOR_ID, + pci_get_word(config + PCI_VENDOR_ID)); + pci_set_word(config + PCI_SUBSYSTEM_ID, virtio_device_get_id(proxy->bus)); + config[PCI_INTERRUPT_PIN] = 1; + + if (virtio_device_get_nvectors(bus) && + msix_init_exclusive_bar(&proxy->pci_dev, + virtio_device_get_nvectors(bus), 1)) { + virtio_device_set_nvectors(bus, 0); + } + + proxy->pci_dev.config_write = virtio_write_config; + + size = VIRTIO_PCI_REGION_SIZE(&proxy->pci_dev) + + virtio_device_get_config_len(bus); + if (size & (size-1)) { + size = 1 << qemu_fls(size); + } + + memory_region_init_io(&proxy->bar, &virtio_pci_config_ops, proxy, + "virtio-pci", size); + pci_register_bar(&proxy->pci_dev, 0, PCI_BASE_ADDRESS_SPACE_IO, + &proxy->bar); + + if (!kvm_has_many_ioeventfds()) { + proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD; + } + + proxy->host_features |= 0x1 << VIRTIO_F_NOTIFY_ON_EMPTY; + proxy->host_features |= 0x1 << VIRTIO_F_BAD_FEATURE; + proxy->host_features = virtio_device_get_features(bus, + proxy->host_features); +} + +/* This is called by virtio-bus just before the device is unplugged. */ +static void virtio_pci_device_unplug(void *opaque) +{ + VirtIOPCIProxy *dev = VIRTIO_PCI(opaque); + virtio_pci_stop_ioeventfd(dev); +} + +static int virtio_pci_init(PCIDevice *pci_dev) +{ + VirtIOPCIProxy *dev = VIRTIO_PCI(pci_dev); + VirtioPCIClass *k = VIRTIO_PCI_GET_CLASS(pci_dev); + dev->bus = virtio_pci_bus_new(dev); + if (k->init != NULL) { + return k->init(dev); + } + return 0; +} + +static void virtio_pci_exit(PCIDevice *pci_dev) +{ + VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev); + VirtioBusState *bus = VIRTIO_BUS(proxy->bus); + BusState *qbus = BUS(proxy->bus); + virtio_bus_destroy_device(bus); + qbus_free(qbus); + virtio_exit_pci(pci_dev); +} + +/* + * This will be renamed virtio_pci_reset at the end of the series. + * virtio_pci_reset is still in use at this moment. + */ +static void virtio_pci_rst(DeviceState *qdev) +{ + VirtIOPCIProxy *proxy = VIRTIO_PCI(qdev); + VirtioBusState *bus = VIRTIO_BUS(proxy->bus); + virtio_pci_stop_ioeventfd(proxy); + virtio_bus_reset(bus); + msix_unuse_all_vectors(&proxy->pci_dev); + proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG; +} + +static void virtio_pci_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + + k->init = virtio_pci_init; + k->exit = virtio_pci_exit; + k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; + k->revision = VIRTIO_PCI_ABI_VERSION; + k->class_id = PCI_CLASS_OTHERS; + dc->reset = virtio_pci_rst; +} + +static const TypeInfo virtio_pci_info = { + .name = TYPE_VIRTIO_PCI, + .parent = TYPE_PCI_DEVICE, + .instance_size = sizeof(VirtIOPCIProxy), + .class_init = virtio_pci_class_init, + .class_size = sizeof(VirtioPCIClass), +}; + /* virtio-pci-bus */ VirtioBusState *virtio_pci_bus_new(VirtIOPCIProxy *dev) @@ -1143,6 +1273,8 @@ static void virtio_pci_bus_class_init(ObjectClass *klass, void *data) k->set_host_notifier = virtio_pci_set_host_notifier; k->set_guest_notifiers = virtio_pci_set_guest_notifiers; k->vmstate_change = virtio_pci_vmstate_change; + k->device_plugged = virtio_pci_device_plugged; + k->device_unplug = virtio_pci_device_unplug; } static const TypeInfo virtio_pci_bus_info = { @@ -1161,6 +1293,7 @@ static void virtio_pci_register_types(void) type_register_static(&virtio_scsi_info); type_register_static(&virtio_rng_info); type_register_static(&virtio_pci_bus_info); + type_register_static(&virtio_pci_info); } type_init(virtio_pci_register_types) diff --git a/hw/virtio-pci.h b/hw/virtio-pci.h index 0e3288e..e330e57 100644 --- a/hw/virtio-pci.h +++ b/hw/virtio-pci.h @@ -46,6 +46,22 @@ typedef struct { unsigned int users; } VirtIOIRQFD; +/* + * virtio-pci : This is the PCIDevice which have a virtio-pci-bus. + */ +#define TYPE_VIRTIO_PCI "virtio-pci" +#define VIRTIO_PCI_GET_CLASS(obj) \ + OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI) +#define VIRTIO_PCI_CLASS(klass) \ + OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI) +#define VIRTIO_PCI(obj) \ + OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI) + +typedef struct VirtioPCIClass { + PCIDeviceClass parent_class; + int (*init)(VirtIOPCIProxy *vpci_dev); +} VirtioPCIClass; + struct VirtIOPCIProxy { PCIDevice pci_dev; VirtIODevice *vdev; @@ -66,6 +82,8 @@ struct VirtIOPCIProxy { bool ioeventfd_disabled; bool ioeventfd_started; VirtIOIRQFD *vector_irqfd; + /* That's the virtio-bus on which VirtioDevice will be connected. */ + VirtioBusState *bus; }; void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);