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/*
* Xen basic APIC support
*
* Copyright (c) 2012 Citrix
*
* Authors:
* Wei Liu <wei.liu2@citrix.com>
*
* This work is licensed under the terms of the GNU GPL version 2 or
* later. See the COPYING file in the top-level directory.
*/
#include "hw/i386/apic_internal.h"
#include "hw/pci/msi.h"
#include "hw/xen/xen.h"
static uint64_t xen_apic_mem_read(void *opaque, hwaddr addr,
unsigned size)
{
return ~(uint64_t)0;
}
static void xen_apic_mem_write(void *opaque, hwaddr addr,
uint64_t data, unsigned size)
{
if (size != sizeof(uint32_t)) {
fprintf(stderr, "Xen: APIC write data size = %d, invalid\n", size);
return;
}
xen_hvm_inject_msi(addr, data);
}
static const MemoryRegionOps xen_apic_io_ops = {
.read = xen_apic_mem_read,
.write = xen_apic_mem_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void xen_apic_realize(DeviceState *dev, Error **errp)
{
APICCommonState *s = APIC_COMMON(dev);
memory_region_init_io(&s->io_memory, OBJECT(s), &xen_apic_io_ops, s,
"xen-apic-msi", APIC_SPACE_SIZE);
#if defined(CONFIG_XEN_CTRL_INTERFACE_VERSION) \
&& CONFIG_XEN_CTRL_INTERFACE_VERSION >= 420
msi_supported = true;
#endif
}
static void xen_apic_set_base(APICCommonState *s, uint64_t val)
{
}
static void xen_apic_set_tpr(APICCommonState *s, uint8_t val)
{
}
static uint8_t xen_apic_get_tpr(APICCommonState *s)
{
return 0;
}
static void xen_apic_vapic_base_update(APICCommonState *s)
{
}
static void xen_apic_external_nmi(APICCommonState *s)
{
}
static void xen_apic_class_init(ObjectClass *klass, void *data)
{
APICCommonClass *k = APIC_COMMON_CLASS(klass);
k->realize = xen_apic_realize;
k->set_base = xen_apic_set_base;
k->set_tpr = xen_apic_set_tpr;
k->get_tpr = xen_apic_get_tpr;
k->vapic_base_update = xen_apic_vapic_base_update;
k->external_nmi = xen_apic_external_nmi;
}
static const TypeInfo xen_apic_info = {
.name = "xen-apic",
.parent = TYPE_APIC_COMMON,
.instance_size = sizeof(APICCommonState),
.class_init = xen_apic_class_init,
};
static void xen_apic_register_types(void)
{
type_register_static(&xen_apic_info);
}
type_init(xen_apic_register_types)
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