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hw/misc: Hyper-V test device 'hyperv-testdev'

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'hyperv-testdev' will be used by kvm-unit-tests
to setup Hyper-V SynIC SINT's routing and to inject
Hyper-V SynIC SINT's.

Hyper-V test device is ISA type device that creates 0x3000
IO memory region and catches write access into it. Every
write operation data decoded into ctl code and parameters
for Hyper-V test device.

Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Richard Henderson <rth@twiddle.net>
CC: Eduardo Habkost <ehabkost@redhat.com>
CC: "Andreas Färber" <afaerber@suse.de>
CC: Marcelo Tosatti <mtosatti@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: kvm@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Andrey Smetanin 2015-11-10 15:52:44 +03:00 committed by Paolo Bonzini
parent 50efe82c3c
commit b67dbb7070
4 changed files with 170 additions and 0 deletions
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1
default-configs/i386-softmmu.mak
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@ -50,3 +50,4 @@ CONFIG_XIO3130=y
CONFIG_IOH3420=y
CONFIG_I82801B11=y
CONFIG_SMBIOS=y
CONFIG_HYPERV_TESTDEV=$(CONFIG_KVM)

1
default-configs/x86_64-softmmu.mak
View File

@ -50,3 +50,4 @@ CONFIG_XIO3130=y
CONFIG_IOH3420=y
CONFIG_I82801B11=y
CONFIG_SMBIOS=y
CONFIG_HYPERV_TESTDEV=$(CONFIG_KVM)

1
hw/misc/Makefile.objs
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@ -43,3 +43,4 @@ obj-$(CONFIG_STM32F2XX_SYSCFG) += stm32f2xx_syscfg.o
obj-$(CONFIG_PVPANIC) += pvpanic.o
obj-$(CONFIG_EDU) += edu.o
obj-$(CONFIG_HYPERV_TESTDEV) += hyperv_testdev.o

167
hw/misc/hyperv_testdev.c Normal file
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@ -0,0 +1,167 @@
/*
* QEMU KVM Hyper-V test device to support Hyper-V kvm-unit-tests
*
* Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com>
*
* Authors:
* Andrey Smetanin <asmetanin@virtuozzo.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/hw.h"
#include "hw/qdev.h"
#include "hw/isa/isa.h"
#include "sysemu/kvm.h"
#include "linux/kvm.h"
#include "target-i386/hyperv.h"
#include "kvm_i386.h"
#define HV_TEST_DEV_MAX_SINT_ROUTES 64
struct HypervTestDev {
ISADevice parent_obj;
MemoryRegion sint_control;
HvSintRoute *sint_route[HV_TEST_DEV_MAX_SINT_ROUTES];
};
typedef struct HypervTestDev HypervTestDev;
#define TYPE_HYPERV_TEST_DEV "hyperv-testdev"
#define HYPERV_TEST_DEV(obj) \
OBJECT_CHECK(HypervTestDev, (obj), TYPE_HYPERV_TEST_DEV)
enum {
HV_TEST_DEV_SINT_ROUTE_CREATE = 1,
HV_TEST_DEV_SINT_ROUTE_DESTROY,
HV_TEST_DEV_SINT_ROUTE_SET_SINT
};
static int alloc_sint_route_index(HypervTestDev *dev)
{
int i;
for (i = 0; i < ARRAY_SIZE(dev->sint_route); i++) {
if (dev->sint_route[i] == NULL) {
return i;
}
}
return -1;
}
static void free_sint_route_index(HypervTestDev *dev, int i)
{
assert(i >= 0 && i < ARRAY_SIZE(dev->sint_route));
dev->sint_route[i] = NULL;
}
static int find_sint_route_index(HypervTestDev *dev, uint32_t vcpu_id,
uint32_t sint)
{
HvSintRoute *sint_route;
int i;
for (i = 0; i < ARRAY_SIZE(dev->sint_route); i++) {
sint_route = dev->sint_route[i];
if (sint_route && sint_route->vcpu_id == vcpu_id &&
sint_route->sint == sint) {
return i;
}
}
return -1;
}
static void hv_synic_test_dev_control(HypervTestDev *dev, uint32_t ctl,
uint32_t vcpu_id, uint32_t sint)
{
int i;
HvSintRoute *sint_route;
switch (ctl) {
case HV_TEST_DEV_SINT_ROUTE_CREATE:
i = alloc_sint_route_index(dev);
assert(i >= 0);
sint_route = kvm_hv_sint_route_create(vcpu_id, sint, NULL);
assert(sint_route);
dev->sint_route[i] = sint_route;
break;
case HV_TEST_DEV_SINT_ROUTE_DESTROY:
i = find_sint_route_index(dev, vcpu_id, sint);
assert(i >= 0);
sint_route = dev->sint_route[i];
kvm_hv_sint_route_destroy(sint_route);
free_sint_route_index(dev, i);
break;
case HV_TEST_DEV_SINT_ROUTE_SET_SINT:
i = find_sint_route_index(dev, vcpu_id, sint);
assert(i >= 0);
sint_route = dev->sint_route[i];
kvm_hv_sint_route_set_sint(sint_route);
break;
default:
break;
}
}
static void hv_test_dev_control(void *opaque, hwaddr addr, uint64_t data,
uint32_t len)
{
HypervTestDev *dev = HYPERV_TEST_DEV(opaque);
uint8_t ctl;
ctl = (data >> 16ULL) & 0xFF;
switch (ctl) {
case HV_TEST_DEV_SINT_ROUTE_CREATE:
case HV_TEST_DEV_SINT_ROUTE_DESTROY:
case HV_TEST_DEV_SINT_ROUTE_SET_SINT: {
uint8_t sint = data & 0xFF;
uint8_t vcpu_id = (data >> 8ULL) & 0xFF;
hv_synic_test_dev_control(dev, ctl, vcpu_id, sint);
break;
}
default:
break;
}
}
static const MemoryRegionOps synic_test_sint_ops = {
.write = hv_test_dev_control,
.valid.min_access_size = 4,
.valid.max_access_size = 4,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static void hv_test_dev_realizefn(DeviceState *d, Error **errp)
{
ISADevice *isa = ISA_DEVICE(d);
HypervTestDev *dev = HYPERV_TEST_DEV(d);
MemoryRegion *io = isa_address_space_io(isa);
memset(dev->sint_route, 0, sizeof(dev->sint_route));
memory_region_init_io(&dev->sint_control, OBJECT(dev),
&synic_test_sint_ops, dev,
"hyperv-testdev-ctl", 4);
memory_region_add_subregion(io, 0x3000, &dev->sint_control);
}
static void hv_test_dev_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
dc->realize = hv_test_dev_realizefn;
}
static const TypeInfo hv_test_dev_info = {
.name = TYPE_HYPERV_TEST_DEV,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(HypervTestDev),
.class_init = hv_test_dev_class_init,
};
static void hv_test_dev_register_types(void)
{
type_register_static(&hv_test_dev_info);
}
type_init(hv_test_dev_register_types);