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authorAndrey Smetanin <asmetanin@virtuozzo.com>2015-11-10 15:52:44 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2015-12-17 15:24:35 +0100
commitb67dbb70703bbb156dccc654550b6ece27920490 (patch)
tree8761cf8f8a6d3971d7497b22fd4f2b817da2a306 /hw/misc
parent50efe82c3c27195162dd8df273eadd77d8aecad3 (diff)
hw/misc: Hyper-V test device 'hyperv-testdev'
'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>
Diffstat (limited to 'hw/misc')
-rw-r--r--hw/misc/Makefile.objs1
-rw-r--r--hw/misc/hyperv_testdev.c167
2 files changed, 168 insertions, 0 deletions
diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs
index 8a235dfb57..d4765c2516 100644
--- a/hw/misc/Makefile.objs
+++ b/hw/misc/Makefile.objs
@@ -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
diff --git a/hw/misc/hyperv_testdev.c b/hw/misc/hyperv_testdev.c
new file mode 100644
index 0000000000..d88844aaba
--- /dev/null
+++ b/hw/misc/hyperv_testdev.c
@@ -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);