From b67dbb70703bbb156dccc654550b6ece27920490 Mon Sep 17 00:00:00 2001 From: Andrey Smetanin Date: Tue, 10 Nov 2015 15:52:44 +0300 Subject: [PATCH] hw/misc: Hyper-V test device 'hyperv-testdev' MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit '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 Reviewed-by: Roman Kagan Signed-off-by: Denis V. Lunev CC: Paolo Bonzini CC: Richard Henderson CC: Eduardo Habkost CC: "Andreas Färber" CC: Marcelo Tosatti CC: Roman Kagan CC: Denis V. Lunev CC: kvm@vger.kernel.org Signed-off-by: Paolo Bonzini --- default-configs/i386-softmmu.mak | 1 + default-configs/x86_64-softmmu.mak | 1 + hw/misc/Makefile.objs | 1 + hw/misc/hyperv_testdev.c | 167 +++++++++++++++++++++++++++++++++++++ 4 files changed, 170 insertions(+) create mode 100644 hw/misc/hyperv_testdev.c diff --git a/default-configs/i386-softmmu.mak b/default-configs/i386-softmmu.mak index 43c96d1..57ccff3 100644 --- a/default-configs/i386-softmmu.mak +++ b/default-configs/i386-softmmu.mak @@ -50,3 +50,4 @@ CONFIG_XIO3130=y CONFIG_IOH3420=y CONFIG_I82801B11=y CONFIG_SMBIOS=y +CONFIG_HYPERV_TESTDEV=$(CONFIG_KVM) diff --git a/default-configs/x86_64-softmmu.mak b/default-configs/x86_64-softmmu.mak index dfb8095..30f5e75 100644 --- a/default-configs/x86_64-softmmu.mak +++ b/default-configs/x86_64-softmmu.mak @@ -50,3 +50,4 @@ CONFIG_XIO3130=y CONFIG_IOH3420=y CONFIG_I82801B11=y CONFIG_SMBIOS=y +CONFIG_HYPERV_TESTDEV=$(CONFIG_KVM) diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index 8a235df..d4765c2 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 0000000..d88844a --- /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 + * + * Authors: + * Andrey Smetanin + * + * 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); -- 2.7.4