1 /* 2 * QEMU KVM Hyper-V test device to support Hyper-V kvm-unit-tests 3 * 4 * Copyright (C) 2015 Andrey Smetanin <asmetanin@virtuozzo.com> 5 * 6 * Authors: 7 * Andrey Smetanin <asmetanin@virtuozzo.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or later. 10 * See the COPYING file in the top-level directory. 11 * 12 */ 13 14 #include "qemu/osdep.h" 15 #include "qemu/queue.h" 16 #include "hw/qdev.h" 17 #include "hw/isa/isa.h" 18 #include "hw/hyperv/hyperv.h" 19 20 typedef struct TestSintRoute { 21 QLIST_ENTRY(TestSintRoute) le; 22 uint8_t vp_index; 23 uint8_t sint; 24 HvSintRoute *sint_route; 25 } TestSintRoute; 26 27 struct HypervTestDev { 28 ISADevice parent_obj; 29 MemoryRegion sint_control; 30 QLIST_HEAD(, TestSintRoute) sint_routes; 31 }; 32 typedef struct HypervTestDev HypervTestDev; 33 34 #define TYPE_HYPERV_TEST_DEV "hyperv-testdev" 35 #define HYPERV_TEST_DEV(obj) \ 36 OBJECT_CHECK(HypervTestDev, (obj), TYPE_HYPERV_TEST_DEV) 37 38 enum { 39 HV_TEST_DEV_SINT_ROUTE_CREATE = 1, 40 HV_TEST_DEV_SINT_ROUTE_DESTROY, 41 HV_TEST_DEV_SINT_ROUTE_SET_SINT 42 }; 43 44 static void sint_route_create(HypervTestDev *dev, 45 uint8_t vp_index, uint8_t sint) 46 { 47 TestSintRoute *sint_route; 48 49 sint_route = g_new0(TestSintRoute, 1); 50 assert(sint_route); 51 52 sint_route->vp_index = vp_index; 53 sint_route->sint = sint; 54 55 sint_route->sint_route = hyperv_sint_route_new(vp_index, sint, NULL, NULL); 56 assert(sint_route->sint_route); 57 58 QLIST_INSERT_HEAD(&dev->sint_routes, sint_route, le); 59 } 60 61 static TestSintRoute *sint_route_find(HypervTestDev *dev, 62 uint8_t vp_index, uint8_t sint) 63 { 64 TestSintRoute *sint_route; 65 66 QLIST_FOREACH(sint_route, &dev->sint_routes, le) { 67 if (sint_route->vp_index == vp_index && sint_route->sint == sint) { 68 return sint_route; 69 } 70 } 71 assert(false); 72 return NULL; 73 } 74 75 static void sint_route_destroy(HypervTestDev *dev, 76 uint8_t vp_index, uint8_t sint) 77 { 78 TestSintRoute *sint_route; 79 80 sint_route = sint_route_find(dev, vp_index, sint); 81 QLIST_REMOVE(sint_route, le); 82 hyperv_sint_route_unref(sint_route->sint_route); 83 g_free(sint_route); 84 } 85 86 static void sint_route_set_sint(HypervTestDev *dev, 87 uint8_t vp_index, uint8_t sint) 88 { 89 TestSintRoute *sint_route; 90 91 sint_route = sint_route_find(dev, vp_index, sint); 92 93 hyperv_sint_route_set_sint(sint_route->sint_route); 94 } 95 96 static uint64_t hv_test_dev_read(void *opaque, hwaddr addr, unsigned size) 97 { 98 return 0; 99 } 100 101 static void hv_test_dev_write(void *opaque, hwaddr addr, uint64_t data, 102 uint32_t len) 103 { 104 HypervTestDev *dev = HYPERV_TEST_DEV(opaque); 105 uint8_t sint = data & 0xFF; 106 uint8_t vp_index = (data >> 8ULL) & 0xFF; 107 uint8_t ctl = (data >> 16ULL) & 0xFF; 108 109 switch (ctl) { 110 case HV_TEST_DEV_SINT_ROUTE_CREATE: 111 sint_route_create(dev, vp_index, sint); 112 break; 113 case HV_TEST_DEV_SINT_ROUTE_DESTROY: 114 sint_route_destroy(dev, vp_index, sint); 115 break; 116 case HV_TEST_DEV_SINT_ROUTE_SET_SINT: 117 sint_route_set_sint(dev, vp_index, sint); 118 break; 119 default: 120 break; 121 } 122 } 123 124 static const MemoryRegionOps synic_test_sint_ops = { 125 .read = hv_test_dev_read, 126 .write = hv_test_dev_write, 127 .valid.min_access_size = 4, 128 .valid.max_access_size = 4, 129 .endianness = DEVICE_LITTLE_ENDIAN, 130 }; 131 132 static void hv_test_dev_realizefn(DeviceState *d, Error **errp) 133 { 134 ISADevice *isa = ISA_DEVICE(d); 135 HypervTestDev *dev = HYPERV_TEST_DEV(d); 136 MemoryRegion *io = isa_address_space_io(isa); 137 138 QLIST_INIT(&dev->sint_routes); 139 memory_region_init_io(&dev->sint_control, OBJECT(dev), 140 &synic_test_sint_ops, dev, 141 "hyperv-testdev-ctl", 4); 142 memory_region_add_subregion(io, 0x3000, &dev->sint_control); 143 } 144 145 static void hv_test_dev_class_init(ObjectClass *klass, void *data) 146 { 147 DeviceClass *dc = DEVICE_CLASS(klass); 148 149 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 150 dc->realize = hv_test_dev_realizefn; 151 } 152 153 static const TypeInfo hv_test_dev_info = { 154 .name = TYPE_HYPERV_TEST_DEV, 155 .parent = TYPE_ISA_DEVICE, 156 .instance_size = sizeof(HypervTestDev), 157 .class_init = hv_test_dev_class_init, 158 }; 159 160 static void hv_test_dev_register_types(void) 161 { 162 type_register_static(&hv_test_dev_info); 163 } 164 type_init(hv_test_dev_register_types); 165