2 * sPAPR CPU core device, acts as container of CPU thread devices.
4 * Copyright (C) 2016 Bharata B Rao <bharata@linux.vnet.ibm.com>
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 "qemu/osdep.h"
10 #include "hw/cpu/core.h"
11 #include "hw/ppc/spapr_cpu_core.h"
12 #include "target/ppc/cpu.h"
13 #include "hw/ppc/spapr.h"
14 #include "hw/boards.h"
15 #include "qapi/error.h"
16 #include "sysemu/cpus.h"
17 #include "sysemu/kvm.h"
18 #include "target/ppc/kvm_ppc.h"
19 #include "hw/ppc/ppc.h"
20 #include "target/ppc/mmu-hash64.h"
21 #include "sysemu/numa.h"
22 #include "sysemu/hw_accel.h"
23 #include "qemu/error-report.h"
25 static void spapr_cpu_reset(void *opaque
)
27 PowerPCCPU
*cpu
= opaque
;
28 CPUState
*cs
= CPU(cpu
);
29 CPUPPCState
*env
= &cpu
->env
;
30 PowerPCCPUClass
*pcc
= POWERPC_CPU_GET_CLASS(cpu
);
34 /* All CPUs start halted. CPU0 is unhalted from the machine level
35 * reset code and the rest are explicitly started up by the guest
36 * using an RTAS call */
39 env
->spr
[SPR_HIOR
] = 0;
41 /* Disable Power-saving mode Exit Cause exceptions for the CPU.
42 * This can cause issues when rebooting the guest if a secondary
44 if (cs
!= first_cpu
) {
45 env
->spr
[SPR_LPCR
] &= ~pcc
->lpcr_pm
;
49 static void spapr_cpu_destroy(PowerPCCPU
*cpu
)
51 qemu_unregister_reset(spapr_cpu_reset
, cpu
);
54 static void spapr_cpu_init(sPAPRMachineState
*spapr
, PowerPCCPU
*cpu
,
57 CPUPPCState
*env
= &cpu
->env
;
59 /* Set time-base frequency to 512 MHz */
60 cpu_ppc_tb_init(env
, SPAPR_TIMEBASE_FREQ
);
62 /* Enable PAPR mode in TCG or KVM */
63 cpu_ppc_set_papr(cpu
, PPC_VIRTUAL_HYPERVISOR(spapr
));
65 qemu_register_reset(spapr_cpu_reset
, cpu
);
70 * Return the sPAPR CPU core type for @model which essentially is the CPU
71 * model specified with -cpu cmdline option.
73 const char *spapr_get_cpu_core_type(const char *cpu_type
)
75 int len
= strlen(cpu_type
) - strlen(POWERPC_CPU_TYPE_SUFFIX
);
76 char *core_type
= g_strdup_printf(SPAPR_CPU_CORE_TYPE_NAME("%.*s"),
78 ObjectClass
*oc
= object_class_by_name(core_type
);
85 return object_class_get_name(oc
);
88 static void spapr_cpu_core_unrealizefn(DeviceState
*dev
, Error
**errp
)
90 sPAPRCPUCore
*sc
= SPAPR_CPU_CORE(OBJECT(dev
));
91 CPUCore
*cc
= CPU_CORE(dev
);
94 for (i
= 0; i
< cc
->nr_threads
; i
++) {
95 Object
*obj
= OBJECT(sc
->threads
[i
]);
96 DeviceState
*dev
= DEVICE(obj
);
97 CPUState
*cs
= CPU(dev
);
98 PowerPCCPU
*cpu
= POWERPC_CPU(cs
);
100 spapr_cpu_destroy(cpu
);
101 object_unparent(cpu
->intc
);
103 object_unparent(obj
);
108 static void spapr_cpu_core_realize_child(Object
*child
,
109 sPAPRMachineState
*spapr
, Error
**errp
)
111 Error
*local_err
= NULL
;
112 CPUState
*cs
= CPU(child
);
113 PowerPCCPU
*cpu
= POWERPC_CPU(cs
);
115 object_property_set_bool(child
, true, "realized", &local_err
);
120 spapr_cpu_init(spapr
, cpu
, &local_err
);
125 cpu
->intc
= icp_create(child
, spapr
->icp_type
, XICS_FABRIC(spapr
),
134 error_propagate(errp
, local_err
);
137 static void spapr_cpu_core_realize(DeviceState
*dev
, Error
**errp
)
139 /* We don't use SPAPR_MACHINE() in order to exit gracefully if the user
140 * tries to add a sPAPR CPU core to a non-pseries machine.
142 sPAPRMachineState
*spapr
=
143 (sPAPRMachineState
*) object_dynamic_cast(qdev_get_machine(),
145 sPAPRCPUCore
*sc
= SPAPR_CPU_CORE(OBJECT(dev
));
146 sPAPRCPUCoreClass
*scc
= SPAPR_CPU_CORE_GET_CLASS(OBJECT(dev
));
147 CPUCore
*cc
= CPU_CORE(OBJECT(dev
));
148 Error
*local_err
= NULL
;
153 error_setg(errp
, TYPE_SPAPR_CPU_CORE
" needs a pseries machine");
157 sc
->threads
= g_new(PowerPCCPU
*, cc
->nr_threads
);
158 for (i
= 0; i
< cc
->nr_threads
; i
++) {
163 obj
= object_new(scc
->cpu_type
);
166 cpu
= sc
->threads
[i
] = POWERPC_CPU(obj
);
167 cs
->cpu_index
= cc
->core_id
+ i
;
168 cpu
->vcpu_id
= (cc
->core_id
* spapr
->vsmt
/ smp_threads
) + i
;
169 if (kvm_enabled() && !kvm_vcpu_id_is_valid(cpu
->vcpu_id
)) {
170 error_setg(&local_err
, "Can't create CPU with id %d in KVM",
172 error_append_hint(&local_err
, "Adjust the number of cpus to %d "
173 "or try to raise the number of threads per core\n",
174 cpu
->vcpu_id
* smp_threads
/ spapr
->vsmt
);
179 /* Set NUMA node for the threads belonged to core */
180 cpu
->node_id
= sc
->node_id
;
182 snprintf(id
, sizeof(id
), "thread[%d]", i
);
183 object_property_add_child(OBJECT(sc
), id
, obj
, &local_err
);
190 for (j
= 0; j
< cc
->nr_threads
; j
++) {
191 obj
= OBJECT(sc
->threads
[j
]);
193 spapr_cpu_core_realize_child(obj
, spapr
, &local_err
);
202 obj
= OBJECT(sc
->threads
[i
]);
203 object_unparent(obj
);
206 error_propagate(errp
, local_err
);
209 static Property spapr_cpu_core_properties
[] = {
210 DEFINE_PROP_INT32("node-id", sPAPRCPUCore
, node_id
, CPU_UNSET_NUMA_NODE_ID
),
211 DEFINE_PROP_END_OF_LIST()
214 static void spapr_cpu_core_class_init(ObjectClass
*oc
, void *data
)
216 DeviceClass
*dc
= DEVICE_CLASS(oc
);
217 sPAPRCPUCoreClass
*scc
= SPAPR_CPU_CORE_CLASS(oc
);
219 dc
->realize
= spapr_cpu_core_realize
;
220 dc
->unrealize
= spapr_cpu_core_unrealizefn
;
221 dc
->props
= spapr_cpu_core_properties
;
222 scc
->cpu_type
= data
;
225 #define DEFINE_SPAPR_CPU_CORE_TYPE(cpu_model) \
227 .parent = TYPE_SPAPR_CPU_CORE, \
228 .class_data = (void *) POWERPC_CPU_TYPE_NAME(cpu_model), \
229 .class_init = spapr_cpu_core_class_init, \
230 .name = SPAPR_CPU_CORE_TYPE_NAME(cpu_model), \
233 static const TypeInfo spapr_cpu_core_type_infos
[] = {
235 .name
= TYPE_SPAPR_CPU_CORE
,
236 .parent
= TYPE_CPU_CORE
,
238 .instance_size
= sizeof(sPAPRCPUCore
),
239 .class_size
= sizeof(sPAPRCPUCoreClass
),
241 DEFINE_SPAPR_CPU_CORE_TYPE("970_v2.2"),
242 DEFINE_SPAPR_CPU_CORE_TYPE("970mp_v1.0"),
243 DEFINE_SPAPR_CPU_CORE_TYPE("970mp_v1.1"),
244 DEFINE_SPAPR_CPU_CORE_TYPE("power5+_v2.1"),
245 DEFINE_SPAPR_CPU_CORE_TYPE("power7_v2.3"),
246 DEFINE_SPAPR_CPU_CORE_TYPE("power7+_v2.1"),
247 DEFINE_SPAPR_CPU_CORE_TYPE("power8_v2.0"),
248 DEFINE_SPAPR_CPU_CORE_TYPE("power8e_v2.1"),
249 DEFINE_SPAPR_CPU_CORE_TYPE("power8nvl_v1.0"),
250 DEFINE_SPAPR_CPU_CORE_TYPE("power9_v1.0"),
251 DEFINE_SPAPR_CPU_CORE_TYPE("power9_v2.0"),
253 DEFINE_SPAPR_CPU_CORE_TYPE("host"),
257 DEFINE_TYPES(spapr_cpu_core_type_infos
)