1 /* 2 * QEMU S390x floating interrupt controller (flic) 3 * 4 * Copyright 2014 IBM Corp. 5 * Author(s): Jens Freimann <jfrei@linux.vnet.ibm.com> 6 * Cornelia Huck <cornelia.huck@de.ibm.com> 7 * 8 * This work is licensed under the terms of the GNU GPL, version 2 or (at 9 * your option) any later version. See the COPYING file in the top-level 10 * directory. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "qemu/error-report.h" 15 #include "hw/sysbus.h" 16 #include "hw/s390x/s390_flic.h" 17 #include "trace.h" 18 #include "hw/qdev.h" 19 #include "qapi/error.h" 20 21 S390FLICState *s390_get_flic(void) 22 { 23 static S390FLICState *fs; 24 25 if (!fs) { 26 fs = S390_FLIC_COMMON(object_resolve_path(TYPE_KVM_S390_FLIC, NULL)); 27 if (!fs) { 28 fs = S390_FLIC_COMMON(object_resolve_path(TYPE_QEMU_S390_FLIC, 29 NULL)); 30 } 31 } 32 return fs; 33 } 34 35 void s390_flic_init(void) 36 { 37 DeviceState *dev; 38 39 dev = s390_flic_kvm_create(); 40 if (!dev) { 41 dev = qdev_create(NULL, TYPE_QEMU_S390_FLIC); 42 object_property_add_child(qdev_get_machine(), TYPE_QEMU_S390_FLIC, 43 OBJECT(dev), NULL); 44 } 45 qdev_init_nofail(dev); 46 } 47 48 static int qemu_s390_register_io_adapter(S390FLICState *fs, uint32_t id, 49 uint8_t isc, bool swap, 50 bool is_maskable) 51 { 52 /* nothing to do */ 53 return 0; 54 } 55 56 static int qemu_s390_io_adapter_map(S390FLICState *fs, uint32_t id, 57 uint64_t map_addr, bool do_map) 58 { 59 /* nothing to do */ 60 return 0; 61 } 62 63 static int qemu_s390_add_adapter_routes(S390FLICState *fs, 64 AdapterRoutes *routes) 65 { 66 return -ENOSYS; 67 } 68 69 static void qemu_s390_release_adapter_routes(S390FLICState *fs, 70 AdapterRoutes *routes) 71 { 72 } 73 74 static int qemu_s390_clear_io_flic(S390FLICState *fs, uint16_t subchannel_id, 75 uint16_t subchannel_nr) 76 { 77 /* Fixme TCG */ 78 return -ENOSYS; 79 } 80 81 static void qemu_s390_flic_class_init(ObjectClass *oc, void *data) 82 { 83 S390FLICStateClass *fsc = S390_FLIC_COMMON_CLASS(oc); 84 85 fsc->register_io_adapter = qemu_s390_register_io_adapter; 86 fsc->io_adapter_map = qemu_s390_io_adapter_map; 87 fsc->add_adapter_routes = qemu_s390_add_adapter_routes; 88 fsc->release_adapter_routes = qemu_s390_release_adapter_routes; 89 fsc->clear_io_irq = qemu_s390_clear_io_flic; 90 } 91 92 static Property s390_flic_common_properties[] = { 93 DEFINE_PROP_UINT32("adapter_routes_max_batch", S390FLICState, 94 adapter_routes_max_batch, ADAPTER_ROUTES_MAX_GSI), 95 DEFINE_PROP_END_OF_LIST(), 96 }; 97 98 static void s390_flic_common_realize(DeviceState *dev, Error **errp) 99 { 100 uint32_t max_batch = S390_FLIC_COMMON(dev)->adapter_routes_max_batch; 101 102 if (max_batch > ADAPTER_ROUTES_MAX_GSI) { 103 error_setg(errp, "flic adapter_routes_max_batch too big" 104 "%d (%d allowed)", max_batch, ADAPTER_ROUTES_MAX_GSI); 105 } 106 } 107 108 static void s390_flic_class_init(ObjectClass *oc, void *data) 109 { 110 DeviceClass *dc = DEVICE_CLASS(oc); 111 112 dc->props = s390_flic_common_properties; 113 dc->realize = s390_flic_common_realize; 114 } 115 116 static const TypeInfo qemu_s390_flic_info = { 117 .name = TYPE_QEMU_S390_FLIC, 118 .parent = TYPE_S390_FLIC_COMMON, 119 .instance_size = sizeof(QEMUS390FLICState), 120 .class_init = qemu_s390_flic_class_init, 121 }; 122 123 124 static const TypeInfo s390_flic_common_info = { 125 .name = TYPE_S390_FLIC_COMMON, 126 .parent = TYPE_SYS_BUS_DEVICE, 127 .instance_size = sizeof(S390FLICState), 128 .class_init = s390_flic_class_init, 129 .class_size = sizeof(S390FLICStateClass), 130 }; 131 132 static void qemu_s390_flic_register_types(void) 133 { 134 type_register_static(&s390_flic_common_info); 135 type_register_static(&qemu_s390_flic_info); 136 } 137 138 type_init(qemu_s390_flic_register_types) 139