4 * Copyright (c) 2009 Ulrich Hecht
5 * Copyright (c) 2011 Alexander Graf
6 * Copyright (c) 2012 SUSE LINUX Products GmbH
7 * Copyright (c) 2012 IBM Corp.
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, see
21 * <http://www.gnu.org/licenses/lgpl-2.1.html>
22 * Contributions after 2012-12-11 are licensed under the terms of the
23 * GNU GPL, version 2 or (at your option) any later version.
26 #include "qemu/osdep.h"
27 #include "qapi/error.h"
30 #include "kvm_s390x.h"
31 #include "sysemu/kvm.h"
32 #include "qemu-common.h"
33 #include "qemu/cutils.h"
34 #include "qemu/timer.h"
35 #include "qemu/error-report.h"
37 #include "qapi/visitor.h"
38 #include "exec/exec-all.h"
39 #ifndef CONFIG_USER_ONLY
41 #include "sysemu/arch_init.h"
42 #include "sysemu/sysemu.h"
43 #include "hw/s390x/sclp.h"
46 #define CR0_RESET 0xE0UL
47 #define CR14_RESET 0xC2000000UL;
49 static void s390_cpu_set_pc(CPUState
*cs
, vaddr value
)
51 S390CPU
*cpu
= S390_CPU(cs
);
53 cpu
->env
.psw
.addr
= value
;
56 static bool s390_cpu_has_work(CPUState
*cs
)
58 S390CPU
*cpu
= S390_CPU(cs
);
59 CPUS390XState
*env
= &cpu
->env
;
61 return (cs
->interrupt_request
& CPU_INTERRUPT_HARD
) &&
62 (env
->psw
.mask
& PSW_MASK_EXT
);
65 #if !defined(CONFIG_USER_ONLY)
66 /* S390CPUClass::load_normal() */
67 static void s390_cpu_load_normal(CPUState
*s
)
69 S390CPU
*cpu
= S390_CPU(s
);
70 cpu
->env
.psw
.addr
= ldl_phys(s
->as
, 4) & PSW_MASK_ESA_ADDR
;
71 cpu
->env
.psw
.mask
= PSW_MASK_32
| PSW_MASK_64
;
72 s390_cpu_set_state(CPU_STATE_OPERATING
, cpu
);
76 /* S390CPUClass::cpu_reset() */
77 static void s390_cpu_reset(CPUState
*s
)
79 S390CPU
*cpu
= S390_CPU(s
);
80 S390CPUClass
*scc
= S390_CPU_GET_CLASS(cpu
);
81 CPUS390XState
*env
= &cpu
->env
;
83 env
->pfault_token
= -1UL;
85 cpu
->env
.sigp_order
= 0;
86 s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
);
89 /* S390CPUClass::initial_reset() */
90 static void s390_cpu_initial_reset(CPUState
*s
)
92 S390CPU
*cpu
= S390_CPU(s
);
93 CPUS390XState
*env
= &cpu
->env
;
97 /* initial reset does not clear everything! */
98 memset(&env
->start_initial_reset_fields
, 0,
99 offsetof(CPUS390XState
, end_reset_fields
) -
100 offsetof(CPUS390XState
, start_initial_reset_fields
));
102 /* architectured initial values for CR 0 and 14 */
103 env
->cregs
[0] = CR0_RESET
;
104 env
->cregs
[14] = CR14_RESET
;
106 /* architectured initial value for Breaking-Event-Address register */
109 env
->pfault_token
= -1UL;
111 for (i
= 0; i
< ARRAY_SIZE(env
->io_index
); i
++) {
112 env
->io_index
[i
] = -1;
115 /* tininess for underflow is detected before rounding */
116 set_float_detect_tininess(float_tininess_before_rounding
,
119 /* Reset state inside the kernel that we cannot access yet from QEMU. */
121 kvm_s390_reset_vcpu(cpu
);
125 /* CPUClass:reset() */
126 static void s390_cpu_full_reset(CPUState
*s
)
128 S390CPU
*cpu
= S390_CPU(s
);
129 S390CPUClass
*scc
= S390_CPU_GET_CLASS(cpu
);
130 CPUS390XState
*env
= &cpu
->env
;
133 scc
->parent_reset(s
);
134 cpu
->env
.sigp_order
= 0;
135 s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
);
137 memset(env
, 0, offsetof(CPUS390XState
, end_reset_fields
));
139 /* architectured initial values for CR 0 and 14 */
140 env
->cregs
[0] = CR0_RESET
;
141 env
->cregs
[14] = CR14_RESET
;
143 /* architectured initial value for Breaking-Event-Address register */
146 env
->pfault_token
= -1UL;
148 for (i
= 0; i
< ARRAY_SIZE(env
->io_index
); i
++) {
149 env
->io_index
[i
] = -1;
152 /* tininess for underflow is detected before rounding */
153 set_float_detect_tininess(float_tininess_before_rounding
,
156 /* Reset state inside the kernel that we cannot access yet from QEMU. */
158 kvm_s390_reset_vcpu(cpu
);
162 #if !defined(CONFIG_USER_ONLY)
163 static void s390_cpu_machine_reset_cb(void *opaque
)
165 S390CPU
*cpu
= opaque
;
167 run_on_cpu(CPU(cpu
), s390_do_cpu_full_reset
, RUN_ON_CPU_NULL
);
171 static void s390_cpu_disas_set_info(CPUState
*cpu
, disassemble_info
*info
)
173 info
->mach
= bfd_mach_s390_64
;
174 info
->print_insn
= print_insn_s390
;
177 static void s390_cpu_realizefn(DeviceState
*dev
, Error
**errp
)
179 CPUState
*cs
= CPU(dev
);
180 S390CPUClass
*scc
= S390_CPU_GET_CLASS(dev
);
181 S390CPU
*cpu
= S390_CPU(dev
);
182 CPUS390XState
*env
= &cpu
->env
;
185 /* the model has to be realized before qemu_init_vcpu() due to kvm */
186 s390_realize_cpu_model(cs
, &err
);
191 #if !defined(CONFIG_USER_ONLY)
192 if (cpu
->id
>= max_cpus
) {
193 error_setg(&err
, "Unable to add CPU: %" PRIi64
194 ", max allowed: %d", cpu
->id
, max_cpus
- 1);
198 if (cpu_exists(cpu
->id
)) {
199 error_setg(&err
, "Unable to add CPU: %" PRIi64
200 ", it already exists", cpu
->id
);
203 if (cpu
->id
!= scc
->next_cpu_id
) {
204 error_setg(&err
, "Unable to add CPU: %" PRIi64
205 ", The next available id is %" PRIi64
, cpu
->id
,
210 cpu_exec_realizefn(cs
, &err
);
216 #if !defined(CONFIG_USER_ONLY)
217 qemu_register_reset(s390_cpu_machine_reset_cb
, cpu
);
219 env
->cpu_num
= cpu
->id
;
220 s390_cpu_gdb_init(cs
);
222 #if !defined(CONFIG_USER_ONLY)
223 run_on_cpu(cs
, s390_do_cpu_full_reset
, RUN_ON_CPU_NULL
);
228 scc
->parent_realize(dev
, &err
);
230 #if !defined(CONFIG_USER_ONLY)
231 if (dev
->hotplugged
) {
232 raise_irq_cpu_hotplug();
237 error_propagate(errp
, err
);
240 static void s390x_cpu_get_id(Object
*obj
, Visitor
*v
, const char *name
,
241 void *opaque
, Error
**errp
)
243 S390CPU
*cpu
= S390_CPU(obj
);
244 int64_t value
= cpu
->id
;
246 visit_type_int(v
, name
, &value
, errp
);
249 static void s390x_cpu_set_id(Object
*obj
, Visitor
*v
, const char *name
,
250 void *opaque
, Error
**errp
)
252 S390CPU
*cpu
= S390_CPU(obj
);
253 DeviceState
*dev
= DEVICE(obj
);
254 const int64_t min
= 0;
255 const int64_t max
= UINT32_MAX
;
260 error_setg(errp
, "Attempt to set property '%s' on '%s' after "
261 "it was realized", name
, object_get_typename(obj
));
265 visit_type_int(v
, name
, &value
, &err
);
267 error_propagate(errp
, err
);
270 if (value
< min
|| value
> max
) {
271 error_setg(errp
, "Property %s.%s doesn't take value %" PRId64
272 " (minimum: %" PRId64
", maximum: %" PRId64
")" ,
273 object_get_typename(obj
), name
, value
, min
, max
);
279 static void s390_cpu_initfn(Object
*obj
)
281 CPUState
*cs
= CPU(obj
);
282 S390CPU
*cpu
= S390_CPU(obj
);
283 CPUS390XState
*env
= &cpu
->env
;
285 #if !defined(CONFIG_USER_ONLY)
291 cs
->exception_index
= EXCP_HLT
;
292 object_property_add(OBJECT(cpu
), "id", "int64_t", s390x_cpu_get_id
,
293 s390x_cpu_set_id
, NULL
, NULL
, NULL
);
294 s390_cpu_model_register_props(obj
);
295 #if !defined(CONFIG_USER_ONLY)
296 qemu_get_timedate(&tm
, 0);
297 env
->tod_offset
= TOD_UNIX_EPOCH
+
298 (time2tod(mktimegm(&tm
)) * 1000000000ULL);
299 env
->tod_basetime
= 0;
300 env
->tod_timer
= timer_new_ns(QEMU_CLOCK_VIRTUAL
, s390x_tod_timer
, cpu
);
301 env
->cpu_timer
= timer_new_ns(QEMU_CLOCK_VIRTUAL
, s390x_cpu_timer
, cpu
);
302 s390_cpu_set_state(CPU_STATE_STOPPED
, cpu
);
305 if (tcg_enabled() && !inited
) {
307 s390x_translate_init();
310 #if defined(CONFIG_USER_ONLY)
312 S390CPUClass
*scc
= S390_CPU_GET_CLASS(obj
);
313 cpu
->id
= scc
->next_cpu_id
;
318 static void s390_cpu_finalize(Object
*obj
)
320 #if !defined(CONFIG_USER_ONLY)
321 S390CPU
*cpu
= S390_CPU(obj
);
323 qemu_unregister_reset(s390_cpu_machine_reset_cb
, cpu
);
324 g_free(cpu
->irqstate
);
328 #if !defined(CONFIG_USER_ONLY)
329 static bool disabled_wait(CPUState
*cpu
)
331 return cpu
->halted
&& !(S390_CPU(cpu
)->env
.psw
.mask
&
332 (PSW_MASK_IO
| PSW_MASK_EXT
| PSW_MASK_MCHECK
));
335 static unsigned s390_count_running_cpus(void)
341 uint8_t state
= S390_CPU(cpu
)->env
.cpu_state
;
342 if (state
== CPU_STATE_OPERATING
||
343 state
== CPU_STATE_LOAD
) {
344 if (!disabled_wait(cpu
)) {
353 unsigned int s390_cpu_halt(S390CPU
*cpu
)
355 CPUState
*cs
= CPU(cpu
);
356 trace_cpu_halt(cs
->cpu_index
);
360 cs
->exception_index
= EXCP_HLT
;
363 return s390_count_running_cpus();
366 void s390_cpu_unhalt(S390CPU
*cpu
)
368 CPUState
*cs
= CPU(cpu
);
369 trace_cpu_unhalt(cs
->cpu_index
);
373 cs
->exception_index
= -1;
377 unsigned int s390_cpu_set_state(uint8_t cpu_state
, S390CPU
*cpu
)
379 trace_cpu_set_state(CPU(cpu
)->cpu_index
, cpu_state
);
382 case CPU_STATE_STOPPED
:
383 case CPU_STATE_CHECK_STOP
:
384 /* halt the cpu for common infrastructure */
387 case CPU_STATE_OPERATING
:
389 /* unhalt the cpu for common infrastructure */
390 s390_cpu_unhalt(cpu
);
393 error_report("Requested CPU state is not a valid S390 CPU state: %u",
397 if (kvm_enabled() && cpu
->env
.cpu_state
!= cpu_state
) {
398 kvm_s390_set_cpu_state(cpu
, cpu_state
);
400 cpu
->env
.cpu_state
= cpu_state
;
402 return s390_count_running_cpus();
405 int s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
408 return kvm_s390_get_clock(tod_high
, tod_low
);
416 int s390_set_clock(uint8_t *tod_high
, uint64_t *tod_low
)
419 return kvm_s390_set_clock(tod_high
, tod_low
);
425 int s390_set_memory_limit(uint64_t new_limit
, uint64_t *hw_limit
)
428 return kvm_s390_set_mem_limit(new_limit
, hw_limit
);
433 void s390_cmma_reset(void)
436 kvm_s390_cmma_reset();
440 int s390_cpu_restart(S390CPU
*cpu
)
443 return kvm_s390_cpu_restart(cpu
);
448 int s390_get_memslot_count(void)
451 return kvm_s390_get_memslot_count();
453 return MAX_AVAIL_SLOTS
;
457 int s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch_id
,
461 return kvm_s390_assign_subch_ioeventfd(notifier
, sch_id
, vq
, assign
);
467 void s390_crypto_reset(void)
470 kvm_s390_crypto_reset();
474 bool s390_get_squash_mcss(void)
476 if (object_property_get_bool(OBJECT(qdev_get_machine()), "s390-squash-mcss",
484 void s390_enable_css_support(S390CPU
*cpu
)
487 kvm_s390_enable_css_support(cpu
);
492 static gchar
*s390_gdb_arch_name(CPUState
*cs
)
494 return g_strdup("s390:64-bit");
497 static void s390_cpu_class_init(ObjectClass
*oc
, void *data
)
499 S390CPUClass
*scc
= S390_CPU_CLASS(oc
);
500 CPUClass
*cc
= CPU_CLASS(scc
);
501 DeviceClass
*dc
= DEVICE_CLASS(oc
);
503 scc
->next_cpu_id
= 0;
504 scc
->parent_realize
= dc
->realize
;
505 dc
->realize
= s390_cpu_realizefn
;
507 scc
->parent_reset
= cc
->reset
;
508 #if !defined(CONFIG_USER_ONLY)
509 scc
->load_normal
= s390_cpu_load_normal
;
511 scc
->cpu_reset
= s390_cpu_reset
;
512 scc
->initial_cpu_reset
= s390_cpu_initial_reset
;
513 cc
->reset
= s390_cpu_full_reset
;
514 cc
->class_by_name
= s390_cpu_class_by_name
,
515 cc
->has_work
= s390_cpu_has_work
;
517 cc
->do_interrupt
= s390_cpu_do_interrupt
;
519 cc
->dump_state
= s390_cpu_dump_state
;
520 cc
->set_pc
= s390_cpu_set_pc
;
521 cc
->gdb_read_register
= s390_cpu_gdb_read_register
;
522 cc
->gdb_write_register
= s390_cpu_gdb_write_register
;
523 #ifdef CONFIG_USER_ONLY
524 cc
->handle_mmu_fault
= s390_cpu_handle_mmu_fault
;
526 cc
->get_phys_page_debug
= s390_cpu_get_phys_page_debug
;
527 cc
->vmsd
= &vmstate_s390_cpu
;
528 cc
->write_elf64_note
= s390_cpu_write_elf64_note
;
530 cc
->cpu_exec_interrupt
= s390_cpu_exec_interrupt
;
531 cc
->debug_excp_handler
= s390x_cpu_debug_excp_handler
;
532 cc
->do_unaligned_access
= s390x_cpu_do_unaligned_access
;
535 cc
->disas_set_info
= s390_cpu_disas_set_info
;
537 cc
->gdb_num_core_regs
= S390_NUM_CORE_REGS
;
538 cc
->gdb_core_xml_file
= "s390x-core64.xml";
539 cc
->gdb_arch_name
= s390_gdb_arch_name
;
541 s390_cpu_model_class_register_props(oc
);
544 static const TypeInfo s390_cpu_type_info
= {
545 .name
= TYPE_S390_CPU
,
547 .instance_size
= sizeof(S390CPU
),
548 .instance_init
= s390_cpu_initfn
,
549 .instance_finalize
= s390_cpu_finalize
,
551 .class_size
= sizeof(S390CPUClass
),
552 .class_init
= s390_cpu_class_init
,
555 static void s390_cpu_register_types(void)
557 type_register_static(&s390_cpu_type_info
);
560 type_init(s390_cpu_register_types
)