diff options
Diffstat (limited to 'hw/kvm/arm_gic.c')
-rw-r--r-- | hw/kvm/arm_gic.c | 58 |
1 files changed, 37 insertions, 21 deletions
diff --git a/hw/kvm/arm_gic.c b/hw/kvm/arm_gic.c index 4535f90..0ad1b8b 100644 --- a/hw/kvm/arm_gic.c +++ b/hw/kvm/arm_gic.c @@ -20,11 +20,12 @@ #include "hw/sysbus.h" #include "kvm.h" +#include "kvm_arm.h" #include "hw/arm_gic_internal.h" -#define TYPE_KVM_ARM_GIC "kvm-arm_gic" +#define TYPE_KVM_ARM_GIC "kvm-arm-gic" #define KVM_ARM_GIC(obj) \ - OBJECT_CHECK(gic_state, (obj), TYPE_KVM_ARM_GIC) + OBJECT_CHECK(GICState, (obj), TYPE_KVM_ARM_GIC) #define KVM_ARM_GIC_CLASS(klass) \ OBJECT_CLASS_CHECK(KVMARMGICClass, (klass), TYPE_KVM_ARM_GIC) #define KVM_ARM_GIC_GET_CLASS(obj) \ @@ -43,39 +44,47 @@ static void kvm_arm_gic_set_irq(void *opaque, int irq, int level) * [N..N+31] : PPI (internal) interrupts for CPU 0 * [N+32..N+63] : PPI (internal interrupts for CPU 1 * ... + * Convert this to the kernel's desired encoding, which + * has separate fields in the irq number for type, + * CPU number and interrupt number. */ - gic_state *s = (gic_state *)opaque; - + GICState *s = (GICState *)opaque; + int kvm_irq, irqtype, cpu; if (irq < (s->num_irq - GIC_INTERNAL)) { - /* External interrupt number 'irq' */ - kvm_set_irq(kvm_state, irq + GIC_INTERNAL, !!level); + /* External interrupt. The kernel numbers these like the GIC + * hardware, with external interrupt IDs starting after the + * internal ones. + */ + irqtype = KVM_ARM_IRQ_TYPE_SPI; + cpu = 0; + irq += GIC_INTERNAL; } else { - struct kvm_irq_level irq_level; - int cpu; + /* Internal interrupt: decode into (cpu, interrupt id) */ + irqtype = KVM_ARM_IRQ_TYPE_PPI; irq -= (s->num_irq - GIC_INTERNAL); cpu = irq / GIC_INTERNAL; irq %= GIC_INTERNAL; - /* Internal interrupt 'irq' for CPU 'cpu' */ - irq_level.irq = irq; - irq_level.level = !!level; - kvm_vcpu_ioctl(qemu_get_cpu(cpu), KVM_IRQ_LINE, &irq_level); } + kvm_irq = (irqtype << KVM_ARM_IRQ_TYPE_SHIFT) + | (cpu << KVM_ARM_IRQ_VCPU_SHIFT) | irq; + + kvm_set_irq(kvm_state, kvm_irq, !!level); } -static void kvm_arm_gic_put(gic_state *s) +static void kvm_arm_gic_put(GICState *s) { /* TODO: there isn't currently a kernel interface to set the GIC state */ } -static void kvm_arm_gic_get(gic_state *s) +static void kvm_arm_gic_get(GICState *s) { /* TODO: there isn't currently a kernel interface to get the GIC state */ } static void kvm_arm_gic_reset(DeviceState *dev) { - gic_state *s = ARM_GIC_COMMON(dev); + GICState *s = ARM_GIC_COMMON(dev); KVMARMGICClass *kgc = KVM_ARM_GIC_GET_CLASS(s); kgc->parent_reset(dev); kvm_arm_gic_put(s); @@ -85,7 +94,7 @@ static int kvm_arm_gic_init(SysBusDevice *dev) { /* Device instance init function for the GIC sysbus device */ int i; - gic_state *s = FROM_SYSBUS(gic_state, dev); + GICState *s = FROM_SYSBUS(GICState, dev); KVMARMGICClass *kgc = KVM_ARM_GIC_GET_CLASS(s); kgc->parent_init(dev); @@ -109,12 +118,18 @@ static int kvm_arm_gic_init(SysBusDevice *dev) /* Distributor */ memory_region_init_reservation(&s->iomem, "kvm-gic_dist", 0x1000); sysbus_init_mmio(dev, &s->iomem); + kvm_arm_register_device(&s->iomem, + (KVM_ARM_DEVICE_VGIC_V2 << KVM_DEVICE_ID_SHIFT) | + KVM_VGIC_V2_ADDR_TYPE_DIST); /* CPU interface for current core. Unlike arm_gic, we don't * provide the "interface for core #N" memory regions, because * cores with a VGIC don't have those. */ memory_region_init_reservation(&s->cpuiomem[0], "kvm-gic_cpu", 0x1000); sysbus_init_mmio(dev, &s->cpuiomem[0]); + kvm_arm_register_device(&s->cpuiomem[0], + (KVM_ARM_DEVICE_VGIC_V2 << KVM_DEVICE_ID_SHIFT) | + KVM_VGIC_V2_ADDR_TYPE_CPU); /* TODO: we should tell the kernel at some point the address * of the private peripheral base. However we don't currently have * any convenient infrastructure to do that, and in any case the @@ -138,16 +153,17 @@ static void kvm_arm_gic_class_init(ObjectClass *klass, void *data) dc->no_user = 1; } -static TypeInfo arm_gic_info = { +static const TypeInfo kvm_arm_gic_info = { .name = TYPE_KVM_ARM_GIC, .parent = TYPE_ARM_GIC_COMMON, - .instance_size = sizeof(gic_state), + .instance_size = sizeof(GICState), .class_init = kvm_arm_gic_class_init, + .class_size = sizeof(KVMARMGICClass), }; -static void arm_gic_register_types(void) +static void kvm_arm_gic_register_types(void) { - type_register_static(&arm_gic_info); + type_register_static(&kvm_arm_gic_info); } -type_init(arm_gic_register_types) +type_init(kvm_arm_gic_register_types) |