diff options
Diffstat (limited to 'hw/pc_piix.c')
| -rw-r--r-- | hw/pc_piix.c | 52 |
1 files changed, 48 insertions, 4 deletions
diff --git a/hw/pc_piix.c b/hw/pc_piix.c index cde810db27..297c04a9ab 100644 --- a/hw/pc_piix.c +++ b/hw/pc_piix.c @@ -53,6 +53,42 @@ static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 }; static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 }; static const int ide_irq[MAX_IDE_BUS] = { 14, 15 }; +static void kvm_piix3_setup_irq_routing(bool pci_enabled) +{ +#ifdef CONFIG_KVM + KVMState *s = kvm_state; + int ret, i; + + if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) { + for (i = 0; i < 8; ++i) { + if (i == 2) { + continue; + } + kvm_irqchip_add_route(s, i, KVM_IRQCHIP_PIC_MASTER, i); + } + for (i = 8; i < 16; ++i) { + kvm_irqchip_add_route(s, i, KVM_IRQCHIP_PIC_SLAVE, i - 8); + } + ret = kvm_irqchip_commit_routes(s); + if (ret < 0) { + hw_error("KVM IRQ routing setup failed"); + } + } +#endif /* CONFIG_KVM */ +} + +static void kvm_piix3_gsi_handler(void *opaque, int n, int level) +{ + GSIState *s = opaque; + + if (n < ISA_NUM_IRQS) { + /* Kernel will forward to both PIC and IOAPIC */ + qemu_set_irq(s->i8259_irq[n], level); + } else { + qemu_set_irq(s->ioapic_irq[n], level); + } +} + static void ioapic_init(GSIState *gsi_state) { DeviceState *dev; @@ -134,7 +170,13 @@ static void pc_init1(MemoryRegion *system_memory, } gsi_state = g_malloc0(sizeof(*gsi_state)); - gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS); + if (kvm_enabled() && kvm_irqchip_in_kernel()) { + kvm_piix3_setup_irq_routing(pci_enabled); + gsi = qemu_allocate_irqs(kvm_piix3_gsi_handler, gsi_state, + GSI_NUM_PINS); + } else { + gsi = qemu_allocate_irqs(gsi_handler, gsi_state, GSI_NUM_PINS); + } if (pci_enabled) { pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, &isa_bus, gsi, @@ -154,11 +196,13 @@ static void pc_init1(MemoryRegion *system_memory, } isa_bus_irqs(isa_bus, gsi); - if (!xen_enabled()) { + if (kvm_enabled() && kvm_irqchip_in_kernel()) { + i8259 = kvm_i8259_init(isa_bus); + } else if (xen_enabled()) { + i8259 = xen_interrupt_controller_init(); + } else { cpu_irq = pc_allocate_cpu_irq(); i8259 = i8259_init(isa_bus, cpu_irq[0]); - } else { - i8259 = xen_interrupt_controller_init(); } for (i = 0; i < ISA_NUM_IRQS; i++) { |