diff options
| -rw-r--r-- | hw/intc/arm_gic_kvm.c | 22 | ||||
| -rw-r--r-- | include/hw/intc/arm_gic_common.h | 1 | ||||
| -rw-r--r-- | target-arm/kvm.c | 55 | ||||
| -rw-r--r-- | target-arm/kvm_arm.h | 17 |
4 files changed, 80 insertions, 15 deletions
diff --git a/hw/intc/arm_gic_kvm.c b/hw/intc/arm_gic_kvm.c index 59a3da5a6b..964d4d7222 100644 --- a/hw/intc/arm_gic_kvm.c +++ b/hw/intc/arm_gic_kvm.c @@ -97,6 +97,7 @@ static void kvm_arm_gic_realize(DeviceState *dev, Error **errp) GICState *s = KVM_ARM_GIC(dev); SysBusDevice *sbd = SYS_BUS_DEVICE(dev); KVMARMGICClass *kgc = KVM_ARM_GIC_GET_CLASS(s); + int ret; kgc->parent_realize(dev, errp); if (error_is_set(errp)) { @@ -119,13 +120,27 @@ static void kvm_arm_gic_realize(DeviceState *dev, Error **errp) for (i = 0; i < s->num_cpu; i++) { sysbus_init_irq(sbd, &s->parent_irq[i]); } + + /* Try to create the device via the device control API */ + s->dev_fd = -1; + ret = kvm_create_device(kvm_state, KVM_DEV_TYPE_ARM_VGIC_V2, false); + if (ret >= 0) { + s->dev_fd = ret; + } else if (ret != -ENODEV && ret != -ENOTSUP) { + error_setg_errno(errp, -ret, "error creating in-kernel VGIC"); + return; + } + /* Distributor */ memory_region_init_reservation(&s->iomem, OBJECT(s), "kvm-gic_dist", 0x1000); sysbus_init_mmio(sbd, &s->iomem); kvm_arm_register_device(&s->iomem, (KVM_ARM_DEVICE_VGIC_V2 << KVM_ARM_DEVICE_ID_SHIFT) - | KVM_VGIC_V2_ADDR_TYPE_DIST); + | KVM_VGIC_V2_ADDR_TYPE_DIST, + KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V2_ADDR_TYPE_DIST, + s->dev_fd); /* 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. @@ -135,7 +150,10 @@ static void kvm_arm_gic_realize(DeviceState *dev, Error **errp) sysbus_init_mmio(sbd, &s->cpuiomem[0]); kvm_arm_register_device(&s->cpuiomem[0], (KVM_ARM_DEVICE_VGIC_V2 << KVM_ARM_DEVICE_ID_SHIFT) - | KVM_VGIC_V2_ADDR_TYPE_CPU); + | KVM_VGIC_V2_ADDR_TYPE_CPU, + KVM_DEV_ARM_VGIC_GRP_ADDR, + KVM_VGIC_V2_ADDR_TYPE_CPU, + s->dev_fd); } static void kvm_arm_gic_class_init(ObjectClass *klass, void *data) diff --git a/include/hw/intc/arm_gic_common.h b/include/hw/intc/arm_gic_common.h index 89384c2bb4..f6887ed92b 100644 --- a/include/hw/intc/arm_gic_common.h +++ b/include/hw/intc/arm_gic_common.h @@ -104,6 +104,7 @@ typedef struct GICState { MemoryRegion cpuiomem[GIC_NCPU + 1]; /* CPU interfaces */ uint32_t num_irq; uint32_t revision; + int dev_fd; /* kvm device fd if backed by kvm vgic support */ } GICState; #define TYPE_ARM_GIC_COMMON "arm_gic_common" diff --git a/target-arm/kvm.c b/target-arm/kvm.c index 1d2688dda7..39202d7eea 100644 --- a/target-arm/kvm.c +++ b/target-arm/kvm.c @@ -165,8 +165,10 @@ unsigned long kvm_arch_vcpu_id(CPUState *cpu) */ typedef struct KVMDevice { struct kvm_arm_device_addr kda; + struct kvm_device_attr kdattr; MemoryRegion *mr; QSLIST_ENTRY(KVMDevice) entries; + int dev_fd; } KVMDevice; static QSLIST_HEAD(kvm_devices_head, KVMDevice) kvm_devices_head; @@ -200,6 +202,29 @@ static MemoryListener devlistener = { .region_del = kvm_arm_devlistener_del, }; +static void kvm_arm_set_device_addr(KVMDevice *kd) +{ + struct kvm_device_attr *attr = &kd->kdattr; + int ret; + + /* If the device control API is available and we have a device fd on the + * KVMDevice struct, let's use the newer API + */ + if (kd->dev_fd >= 0) { + uint64_t addr = kd->kda.addr; + attr->addr = (uintptr_t)&addr; + ret = kvm_device_ioctl(kd->dev_fd, KVM_SET_DEVICE_ATTR, attr); + } else { + ret = kvm_vm_ioctl(kvm_state, KVM_ARM_SET_DEVICE_ADDR, &kd->kda); + } + + if (ret < 0) { + fprintf(stderr, "Failed to set device address: %s\n", + strerror(-ret)); + abort(); + } +} + static void kvm_arm_machine_init_done(Notifier *notifier, void *data) { KVMDevice *kd, *tkd; @@ -207,12 +232,7 @@ static void kvm_arm_machine_init_done(Notifier *notifier, void *data) memory_listener_unregister(&devlistener); QSLIST_FOREACH_SAFE(kd, &kvm_devices_head, entries, tkd) { if (kd->kda.addr != -1) { - if (kvm_vm_ioctl(kvm_state, KVM_ARM_SET_DEVICE_ADDR, - &kd->kda) < 0) { - fprintf(stderr, "KVM_ARM_SET_DEVICE_ADDRESS failed: %s\n", - strerror(errno)); - abort(); - } + kvm_arm_set_device_addr(kd); } memory_region_unref(kd->mr); g_free(kd); @@ -223,7 +243,8 @@ static Notifier notify = { .notify = kvm_arm_machine_init_done, }; -void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid) +void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid, uint64_t group, + uint64_t attr, int dev_fd) { KVMDevice *kd; @@ -239,6 +260,10 @@ void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid) kd->mr = mr; kd->kda.id = devid; kd->kda.addr = -1; + kd->kdattr.flags = 0; + kd->kdattr.group = group; + kd->kdattr.attr = attr; + kd->dev_fd = dev_fd; QSLIST_INSERT_HEAD(&kvm_devices_head, kd, entries); memory_region_ref(kd->mr); } @@ -389,3 +414,19 @@ void kvm_arch_remove_all_hw_breakpoints(void) void kvm_arch_init_irq_routing(KVMState *s) { } + +int kvm_arch_irqchip_create(KVMState *s) +{ + int ret; + + /* If we can create the VGIC using the newer device control API, we + * let the device do this when it initializes itself, otherwise we + * fall back to the old API */ + + ret = kvm_create_device(s, KVM_DEV_TYPE_ARM_VGIC_V2, true); + if (ret == 0) { + return 1; + } + + return 0; +} diff --git a/target-arm/kvm_arm.h b/target-arm/kvm_arm.h index cd3d13ca2d..137c5671e9 100644 --- a/target-arm/kvm_arm.h +++ b/target-arm/kvm_arm.h @@ -18,16 +18,21 @@ * kvm_arm_register_device: * @mr: memory region for this device * @devid: the KVM device ID + * @group: device control API group for setting addresses + * @attr: device control API address type + * @dev_fd: device control device file descriptor (or -1 if not supported) * * Remember the memory region @mr, and when it is mapped by the * machine model, tell the kernel that base address using the - * KVM_SET_DEVICE_ADDRESS ioctl. @devid should be the ID of - * the device as defined by KVM_SET_DEVICE_ADDRESS. - * The machine model may map and unmap the device multiple times; - * the kernel will only be told the final address at the point - * where machine init is complete. + * KVM_ARM_SET_DEVICE_ADDRESS ioctl or the newer device control API. @devid + * should be the ID of the device as defined by KVM_ARM_SET_DEVICE_ADDRESS or + * the arm-vgic device in the device control API. + * The machine model may map + * and unmap the device multiple times; the kernel will only be told the final + * address at the point where machine init is complete. */ -void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid); +void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid, uint64_t group, + uint64_t attr, int dev_fd); /** * write_list_to_kvmstate: |