999e12bbe8
This converts three devices because apic and ioapic are subclasses of sysbus. Converting subclasses independently of their base class is prohibitively hard. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
122 lines
3.0 KiB
C
122 lines
3.0 KiB
C
/*
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* KVM in-kernel IOPIC support
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*
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* Copyright (c) 2011 Siemens AG
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*
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* Authors:
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* Jan Kiszka <jan.kiszka@siemens.com>
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*
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* This work is licensed under the terms of the GNU GPL version 2.
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* See the COPYING file in the top-level directory.
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*/
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#include "hw/pc.h"
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#include "hw/ioapic_internal.h"
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#include "hw/apic_internal.h"
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#include "kvm.h"
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typedef struct KVMIOAPICState KVMIOAPICState;
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struct KVMIOAPICState {
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IOAPICCommonState ioapic;
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uint32_t kvm_gsi_base;
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};
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static void kvm_ioapic_get(IOAPICCommonState *s)
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{
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struct kvm_irqchip chip;
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struct kvm_ioapic_state *kioapic;
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int ret, i;
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chip.chip_id = KVM_IRQCHIP_IOAPIC;
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ret = kvm_vm_ioctl(kvm_state, KVM_GET_IRQCHIP, &chip);
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if (ret < 0) {
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fprintf(stderr, "KVM_GET_IRQCHIP failed: %s\n", strerror(ret));
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abort();
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}
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kioapic = &chip.chip.ioapic;
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s->id = kioapic->id;
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s->ioregsel = kioapic->ioregsel;
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s->irr = kioapic->irr;
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for (i = 0; i < IOAPIC_NUM_PINS; i++) {
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s->ioredtbl[i] = kioapic->redirtbl[i].bits;
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}
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}
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static void kvm_ioapic_put(IOAPICCommonState *s)
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{
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struct kvm_irqchip chip;
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struct kvm_ioapic_state *kioapic;
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int ret, i;
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chip.chip_id = KVM_IRQCHIP_IOAPIC;
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kioapic = &chip.chip.ioapic;
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kioapic->id = s->id;
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kioapic->ioregsel = s->ioregsel;
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kioapic->base_address = s->busdev.mmio[0].addr;
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kioapic->irr = s->irr;
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for (i = 0; i < IOAPIC_NUM_PINS; i++) {
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kioapic->redirtbl[i].bits = s->ioredtbl[i];
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}
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ret = kvm_vm_ioctl(kvm_state, KVM_SET_IRQCHIP, &chip);
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if (ret < 0) {
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fprintf(stderr, "KVM_GET_IRQCHIP failed: %s\n", strerror(ret));
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abort();
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}
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}
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static void kvm_ioapic_reset(DeviceState *dev)
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{
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IOAPICCommonState *s = DO_UPCAST(IOAPICCommonState, busdev.qdev, dev);
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ioapic_reset_common(dev);
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kvm_ioapic_put(s);
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}
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static void kvm_ioapic_set_irq(void *opaque, int irq, int level)
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{
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KVMIOAPICState *s = opaque;
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int delivered;
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delivered = kvm_irqchip_set_irq(kvm_state, s->kvm_gsi_base + irq, level);
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apic_report_irq_delivered(delivered);
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}
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static void kvm_ioapic_init(IOAPICCommonState *s, int instance_no)
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{
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memory_region_init_reservation(&s->io_memory, "kvm-ioapic", 0x1000);
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qdev_init_gpio_in(&s->busdev.qdev, kvm_ioapic_set_irq, IOAPIC_NUM_PINS);
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}
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static void kvm_ioapic_class_init(ObjectClass *klass, void *data)
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{
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IOAPICCommonClass *k = IOAPIC_COMMON_CLASS(klass);
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k->init = kvm_ioapic_init;
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k->pre_save = kvm_ioapic_get;
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k->post_load = kvm_ioapic_put;
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}
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static DeviceInfo kvm_ioapic_info = {
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.name = "kvm-ioapic",
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.size = sizeof(KVMIOAPICState),
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.reset = kvm_ioapic_reset,
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.class_init = kvm_ioapic_class_init,
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.props = (Property[]) {
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DEFINE_PROP_UINT32("gsi_base", KVMIOAPICState, kvm_gsi_base, 0),
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DEFINE_PROP_END_OF_LIST()
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},
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};
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static void kvm_ioapic_register_device(void)
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{
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ioapic_qdev_register(&kvm_ioapic_info);
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}
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device_init(kvm_ioapic_register_device)
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