diff options
Diffstat (limited to 'hw/xen/xen_pt.c')
| -rw-r--r-- | hw/xen/xen_pt.c | 64 |
1 files changed, 53 insertions, 11 deletions
diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c index 8db0532632..85c93cffcf 100644 --- a/hw/xen/xen_pt.c +++ b/hw/xen/xen_pt.c @@ -57,6 +57,7 @@ #include <sys/ioctl.h> #include "hw/pci/pci.h" +#include "hw/pci/pci_bus.h" #include "hw/qdev-properties.h" #include "hw/qdev-properties-system.h" #include "hw/xen/xen.h" @@ -780,15 +781,6 @@ static void xen_pt_realize(PCIDevice *d, Error **errp) s->hostaddr.bus, s->hostaddr.slot, s->hostaddr.function, s->dev.devfn); - xen_host_pci_device_get(&s->real_device, - s->hostaddr.domain, s->hostaddr.bus, - s->hostaddr.slot, s->hostaddr.function, - errp); - if (*errp) { - error_append_hint(errp, "Failed to \"open\" the real pci device"); - return; - } - s->is_virtfn = s->real_device.is_virtfn; if (s->is_virtfn) { XEN_PT_LOG(d, "%04x:%02x:%02x.%d is a SR-IOV Virtual Function\n", @@ -803,8 +795,10 @@ static void xen_pt_realize(PCIDevice *d, Error **errp) s->io_listener = xen_pt_io_listener; /* Setup VGA bios for passthrough GFX */ - if ((s->real_device.domain == 0) && (s->real_device.bus == 0) && - (s->real_device.dev == 2) && (s->real_device.func == 0)) { + if ((s->real_device.domain == XEN_PCI_IGD_DOMAIN) && + (s->real_device.bus == XEN_PCI_IGD_BUS) && + (s->real_device.dev == XEN_PCI_IGD_DEV) && + (s->real_device.func == XEN_PCI_IGD_FN)) { if (!is_igd_vga_passthrough(&s->real_device)) { error_setg(errp, "Need to enable igd-passthru if you're trying" " to passthrough IGD GFX"); @@ -950,11 +944,58 @@ static void xen_pci_passthrough_instance_init(Object *obj) PCI_DEVICE(obj)->cap_present |= QEMU_PCI_CAP_EXPRESS; } +void xen_igd_reserve_slot(PCIBus *pci_bus) +{ + if (!xen_igd_gfx_pt_enabled()) { + return; + } + + XEN_PT_LOG(0, "Reserving PCI slot 2 for IGD\n"); + pci_bus->slot_reserved_mask |= XEN_PCI_IGD_SLOT_MASK; +} + +static void xen_igd_clear_slot(DeviceState *qdev, Error **errp) +{ + ERRP_GUARD(); + PCIDevice *pci_dev = (PCIDevice *)qdev; + XenPCIPassthroughState *s = XEN_PT_DEVICE(pci_dev); + XenPTDeviceClass *xpdc = XEN_PT_DEVICE_GET_CLASS(s); + PCIBus *pci_bus = pci_get_bus(pci_dev); + + xen_host_pci_device_get(&s->real_device, + s->hostaddr.domain, s->hostaddr.bus, + s->hostaddr.slot, s->hostaddr.function, + errp); + if (*errp) { + error_append_hint(errp, "Failed to \"open\" the real pci device"); + return; + } + + if (!(pci_bus->slot_reserved_mask & XEN_PCI_IGD_SLOT_MASK)) { + xpdc->pci_qdev_realize(qdev, errp); + return; + } + + if (is_igd_vga_passthrough(&s->real_device) && + s->real_device.domain == XEN_PCI_IGD_DOMAIN && + s->real_device.bus == XEN_PCI_IGD_BUS && + s->real_device.dev == XEN_PCI_IGD_DEV && + s->real_device.func == XEN_PCI_IGD_FN && + s->real_device.vendor_id == PCI_VENDOR_ID_INTEL) { + pci_bus->slot_reserved_mask &= ~XEN_PCI_IGD_SLOT_MASK; + XEN_PT_LOG(pci_dev, "Intel IGD found, using slot 2\n"); + } + xpdc->pci_qdev_realize(qdev, errp); +} + static void xen_pci_passthrough_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); + XenPTDeviceClass *xpdc = XEN_PT_DEVICE_CLASS(klass); + xpdc->pci_qdev_realize = dc->realize; + dc->realize = xen_igd_clear_slot; k->realize = xen_pt_realize; k->exit = xen_pt_unregister_device; k->config_read = xen_pt_pci_read_config; @@ -977,6 +1018,7 @@ static const TypeInfo xen_pci_passthrough_info = { .instance_size = sizeof(XenPCIPassthroughState), .instance_finalize = xen_pci_passthrough_finalize, .class_init = xen_pci_passthrough_class_init, + .class_size = sizeof(XenPTDeviceClass), .instance_init = xen_pci_passthrough_instance_init, .interfaces = (InterfaceInfo[]) { { INTERFACE_CONVENTIONAL_PCI_DEVICE }, |