2 * sPAPR CPU core device, acts as container of CPU thread devices.
6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
7 * See the COPYING file in the top-level directory.
9 #include "hw/cpu/core.h"
10 #include "hw/ppc/spapr_cpu_core.h"
11 #include "target/ppc/cpu.h"
12 #include "hw/ppc/spapr.h"
13 #include "hw/boards.h"
14 #include "qapi/error.h"
15 #include "sysemu/cpus.h"
16 #include "sysemu/kvm.h"
17 #include "target/ppc/kvm_ppc.h"
18 #include "hw/ppc/ppc.h"
19 #include "target/ppc/mmu-hash64.h"
20 #include "sysemu/numa.h"
21 #include "qemu/error-report.h"
23 static void spapr_cpu_reset(void *opaque)
25 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
26 PowerPCCPU *cpu = opaque;
27 CPUState *cs = CPU(cpu);
28 CPUPPCState *env = &cpu->env;
32 /* All CPUs start halted. CPU0 is unhalted from the machine level
33 * reset code and the rest are explicitly started up by the guest
34 * using an RTAS call */
37 env->spr[SPR_HIOR] = 0;
40 * This is a hack for the benefit of KVM PR - it abuses the SDR1
41 * slot in kvm_sregs to communicate the userspace address of the
45 env->spr[SPR_SDR1] = (target_ulong)(uintptr_t)spapr->htab
46 | (spapr->htab_shift - 18);
47 if (kvmppc_put_books_sregs(cpu) < 0) {
48 error_report("Unable to update SDR1 in KVM");
54 static void spapr_cpu_destroy(PowerPCCPU *cpu)
56 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
58 xics_cpu_destroy(XICS_FABRIC(spapr), cpu);
59 qemu_unregister_reset(spapr_cpu_reset, cpu);
62 static void spapr_cpu_init(sPAPRMachineState *spapr, PowerPCCPU *cpu,
65 CPUPPCState *env = &cpu->env;
67 /* Set time-base frequency to 512 MHz */
68 cpu_ppc_tb_init(env, SPAPR_TIMEBASE_FREQ);
70 /* Enable PAPR mode in TCG or KVM */
71 cpu_ppc_set_papr(cpu, PPC_VIRTUAL_HYPERVISOR(spapr));
73 if (cpu->max_compat) {
74 Error *local_err = NULL;
76 ppc_set_compat(cpu, cpu->max_compat, &local_err);
78 error_propagate(errp, local_err);
83 qemu_register_reset(spapr_cpu_reset, cpu);
88 * Return the sPAPR CPU core type for @model which essentially is the CPU
89 * model specified with -cpu cmdline option.
91 char *spapr_get_cpu_core_type(const char *model)
94 gchar **model_pieces = g_strsplit(model, ",", 2);
96 core_type = g_strdup_printf("%s-%s", model_pieces[0], TYPE_SPAPR_CPU_CORE);
98 /* Check whether it exists or whether we have to look up an alias name */
99 if (!object_class_by_name(core_type)) {
100 const char *realmodel;
104 realmodel = ppc_cpu_lookup_alias(model_pieces[0]);
106 core_type = spapr_get_cpu_core_type(realmodel);
110 g_strfreev(model_pieces);
114 static void spapr_cpu_core_unrealizefn(DeviceState *dev, Error **errp)
116 sPAPRCPUCore *sc = SPAPR_CPU_CORE(OBJECT(dev));
117 sPAPRCPUCoreClass *scc = SPAPR_CPU_CORE_GET_CLASS(OBJECT(dev));
118 const char *typename = object_class_get_name(scc->cpu_class);
119 size_t size = object_type_get_instance_size(typename);
120 CPUCore *cc = CPU_CORE(dev);
123 for (i = 0; i < cc->nr_threads; i++) {
124 void *obj = sc->threads + i * size;
125 DeviceState *dev = DEVICE(obj);
126 CPUState *cs = CPU(dev);
127 PowerPCCPU *cpu = POWERPC_CPU(cs);
129 spapr_cpu_destroy(cpu);
130 object_unparent(cpu->intc);
132 object_unparent(obj);
137 static void spapr_cpu_core_realize_child(Object *child, Error **errp)
139 Error *local_err = NULL;
140 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
141 CPUState *cs = CPU(child);
142 PowerPCCPU *cpu = POWERPC_CPU(cs);
145 obj = object_new(spapr->icp_type);
146 object_property_add_child(OBJECT(cpu), "icp", obj, &error_abort);
148 object_property_add_const_link(obj, "xics", OBJECT(spapr), &error_abort);
149 object_property_set_bool(obj, true, "realized", &local_err);
154 object_property_set_bool(child, true, "realized", &local_err);
159 spapr_cpu_init(spapr, cpu, &local_err);
164 xics_cpu_setup(XICS_FABRIC(spapr), cpu, ICP(obj));
168 object_unparent(obj);
169 error_propagate(errp, local_err);
172 static void spapr_cpu_core_realize(DeviceState *dev, Error **errp)
174 sPAPRCPUCore *sc = SPAPR_CPU_CORE(OBJECT(dev));
175 sPAPRCPUCoreClass *scc = SPAPR_CPU_CORE_GET_CLASS(OBJECT(dev));
176 CPUCore *cc = CPU_CORE(OBJECT(dev));
177 const char *typename = object_class_get_name(scc->cpu_class);
178 size_t size = object_type_get_instance_size(typename);
179 Error *local_err = NULL;
183 sc->threads = g_malloc0(size * cc->nr_threads);
184 for (i = 0; i < cc->nr_threads; i++) {
188 obj = sc->threads + i * size;
190 object_initialize(obj, size, typename);
192 cs->cpu_index = cc->core_id + i;
194 /* Set NUMA node for the threads belonged to core */
195 cs->numa_node = sc->node_id;
197 snprintf(id, sizeof(id), "thread[%d]", i);
198 object_property_add_child(OBJECT(sc), id, obj, &local_err);
205 for (j = 0; j < cc->nr_threads; j++) {
206 obj = sc->threads + j * size;
208 spapr_cpu_core_realize_child(obj, &local_err);
217 obj = sc->threads + i * size;
218 object_unparent(obj);
221 error_propagate(errp, local_err);
224 static const char *spapr_core_models[] = {
256 static Property spapr_cpu_core_properties[] = {
257 DEFINE_PROP_INT32("node-id", sPAPRCPUCore, node_id, CPU_UNSET_NUMA_NODE_ID),
258 DEFINE_PROP_END_OF_LIST()
261 void spapr_cpu_core_class_init(ObjectClass *oc, void *data)
263 DeviceClass *dc = DEVICE_CLASS(oc);
264 sPAPRCPUCoreClass *scc = SPAPR_CPU_CORE_CLASS(oc);
266 dc->realize = spapr_cpu_core_realize;
267 dc->unrealize = spapr_cpu_core_unrealizefn;
268 dc->props = spapr_cpu_core_properties;
269 scc->cpu_class = cpu_class_by_name(TYPE_POWERPC_CPU, data);
270 g_assert(scc->cpu_class);
273 static const TypeInfo spapr_cpu_core_type_info = {
274 .name = TYPE_SPAPR_CPU_CORE,
275 .parent = TYPE_CPU_CORE,
277 .instance_size = sizeof(sPAPRCPUCore),
278 .class_size = sizeof(sPAPRCPUCoreClass),
281 static void spapr_cpu_core_register_types(void)
285 type_register_static(&spapr_cpu_core_type_info);
287 for (i = 0; i < ARRAY_SIZE(spapr_core_models); i++) {
288 TypeInfo type_info = {
289 .parent = TYPE_SPAPR_CPU_CORE,
290 .instance_size = sizeof(sPAPRCPUCore),
291 .class_init = spapr_cpu_core_class_init,
292 .class_data = (void *) spapr_core_models[i],
295 type_info.name = g_strdup_printf("%s-" TYPE_SPAPR_CPU_CORE,
296 spapr_core_models[i]);
297 type_register(&type_info);
298 g_free((void *)type_info.name);
302 type_init(spapr_cpu_core_register_types)