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Xen: Add xen-apic support and hook it up. 

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Wei Liu 2012-04-12 10:02:47 +00:00 committed by Stefano Stabellini
parent f1dbf015df
commit 9468e9c41a
3 changed files with 99 additions and 1 deletions
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2
Makefile.target
View File

@ -237,7 +237,7 @@ QEMU_CFLAGS += $(VNC_PNG_CFLAGS)
obj-$(CONFIG_XEN) += xen-all.o xen_machine_pv.o xen_domainbuild.o xen-mapcache.o
obj-$(CONFIG_NO_XEN) += xen-stub.o
obj-i386-$(CONFIG_XEN) += xen_platform.o
obj-i386-$(CONFIG_XEN) += xen_platform.o xen_apic.o
# Inter-VM PCI shared memory
CONFIG_IVSHMEM =

8
hw/pc.c
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@ -42,6 +42,7 @@
#include "sysbus.h"
#include "sysemu.h"
#include "kvm.h"
#include "xen.h"
#include "blockdev.h"
#include "ui/qemu-spice.h"
#include "memory.h"
@ -891,9 +892,12 @@ static DeviceState *apic_init(void *env, uint8_t apic_id)
if (kvm_irqchip_in_kernel()) {
dev = qdev_create(NULL, "kvm-apic");
} else if (xen_enabled()) {
dev = qdev_create(NULL, "xen-apic");
} else {
dev = qdev_create(NULL, "apic");
}
qdev_prop_set_uint8(dev, "id", apic_id);
qdev_prop_set_ptr(dev, "cpu_env", env);
qdev_init_nofail(dev);
@ -912,6 +916,10 @@ static DeviceState *apic_init(void *env, uint8_t apic_id)
msi_supported = true;
}
if (xen_enabled()) {
msi_supported = true;
}
return dev;
}

90
hw/xen_apic.c Normal file
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@ -0,0 +1,90 @@
/*
* 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/apic_internal.h"
#include "hw/msi.h"
#include "xen.h"
static uint64_t xen_apic_mem_read(void *opaque, target_phys_addr_t addr,
unsigned size)
{
return ~(uint64_t)0;
}
static void xen_apic_mem_write(void *opaque, target_phys_addr_t 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_init(APICCommonState *s)
{
memory_region_init_io(&s->io_memory, &xen_apic_io_ops, s, "xen-apic-msi",
MSI_SPACE_SIZE);
}
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->init = xen_apic_init;
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 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)