[mirror_qemu.git] / target-s390x / cpu.c

/*
 * QEMU S/390 CPU
 *
 * Copyright (c) 2009 Ulrich Hecht
 * Copyright (c) 2011 Alexander Graf
 * Copyright (c) 2012 SUSE LINUX Products GmbH
 * Copyright (c) 2012 IBM Corp.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see
 * <http://www.gnu.org/licenses/lgpl-2.1.html>
 * Contributions after 2012-12-11 are licensed under the terms of the
 * GNU GPL, version 2 or (at your option) any later version.
 */

#include "cpu.h"
#include "qemu-common.h"
#include "qemu/timer.h"
#include "qemu/error-report.h"
#include "hw/hw.h"
#include "trace.h"
#ifndef CONFIG_USER_ONLY
#include "sysemu/arch_init.h"
#endif

#define CR0_RESET       0xE0UL
#define CR14_RESET      0xC2000000UL;

/* generate CPU information for cpu -? */
void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf)
{
#ifdef CONFIG_KVM
    (*cpu_fprintf)(f, "s390 %16s\n", "host");
#endif
}

#ifndef CONFIG_USER_ONLY
CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
{
    CpuDefinitionInfoList *entry;
    CpuDefinitionInfo *info;

    info = g_malloc0(sizeof(*info));
    info->name = g_strdup("host");

    entry = g_malloc0(sizeof(*entry));
    entry->value = info;

    return entry;
}
#endif

static void s390_cpu_set_pc(CPUState *cs, vaddr value)
{
    S390CPU *cpu = S390_CPU(cs);

    cpu->env.psw.addr = value;
}

static bool s390_cpu_has_work(CPUState *cs)
{
    S390CPU *cpu = S390_CPU(cs);
    CPUS390XState *env = &cpu->env;

    return (cs->interrupt_request & CPU_INTERRUPT_HARD) &&
           (env->psw.mask & PSW_MASK_EXT);
}

#if !defined(CONFIG_USER_ONLY)
/* S390CPUClass::load_normal() */
static void s390_cpu_load_normal(CPUState *s)
{
    S390CPU *cpu = S390_CPU(s);
    cpu->env.psw.addr = ldl_phys(s->as, 4) & PSW_MASK_ESA_ADDR;
    cpu->env.psw.mask = PSW_MASK_32 | PSW_MASK_64;
    s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
}
#endif

/* S390CPUClass::cpu_reset() */
static void s390_cpu_reset(CPUState *s)
{
    S390CPU *cpu = S390_CPU(s);
    S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
    CPUS390XState *env = &cpu->env;

    env->pfault_token = -1UL;
    scc->parent_reset(s);
    cpu->env.sigp_order = 0;
    s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
    tlb_flush(s, 1);
}

/* S390CPUClass::initial_reset() */
static void s390_cpu_initial_reset(CPUState *s)
{
    S390CPU *cpu = S390_CPU(s);
    CPUS390XState *env = &cpu->env;
    int i;

    s390_cpu_reset(s);
    /* initial reset does not touch regs,fregs and aregs */
    memset(&env->fpc, 0, offsetof(CPUS390XState, cpu_num) -
                         offsetof(CPUS390XState, fpc));

    /* architectured initial values for CR 0 and 14 */
    env->cregs[0] = CR0_RESET;
    env->cregs[14] = CR14_RESET;

    env->pfault_token = -1UL;
    env->ext_index = -1;
    for (i = 0; i < ARRAY_SIZE(env->io_index); i++) {
        env->io_index[i] = -1;
    }

    /* tininess for underflow is detected before rounding */
    set_float_detect_tininess(float_tininess_before_rounding,
                              &env->fpu_status);

    /* Reset state inside the kernel that we cannot access yet from QEMU. */
    if (kvm_enabled()) {
        kvm_s390_reset_vcpu(cpu);
    }
}

/* CPUClass:reset() */
static void s390_cpu_full_reset(CPUState *s)
{
    S390CPU *cpu = S390_CPU(s);
    S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
    CPUS390XState *env = &cpu->env;
    int i;

    scc->parent_reset(s);
    cpu->env.sigp_order = 0;
    s390_cpu_set_state(CPU_STATE_STOPPED, cpu);

    memset(env, 0, offsetof(CPUS390XState, cpu_num));

    /* architectured initial values for CR 0 and 14 */
    env->cregs[0] = CR0_RESET;
    env->cregs[14] = CR14_RESET;

    env->pfault_token = -1UL;
    env->ext_index = -1;
    for (i = 0; i < ARRAY_SIZE(env->io_index); i++) {
        env->io_index[i] = -1;
    }

    /* tininess for underflow is detected before rounding */
    set_float_detect_tininess(float_tininess_before_rounding,
                              &env->fpu_status);

    /* Reset state inside the kernel that we cannot access yet from QEMU. */
    if (kvm_enabled()) {
        kvm_s390_reset_vcpu(cpu);
    }
    tlb_flush(s, 1);
}

#if !defined(CONFIG_USER_ONLY)
static void s390_cpu_machine_reset_cb(void *opaque)
{
    S390CPU *cpu = opaque;

    run_on_cpu(CPU(cpu), s390_do_cpu_full_reset, CPU(cpu));
}
#endif

static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
{
    CPUState *cs = CPU(dev);
    S390CPUClass *scc = S390_CPU_GET_CLASS(dev);

    s390_cpu_gdb_init(cs);
    qemu_init_vcpu(cs);
#if !defined(CONFIG_USER_ONLY)
    run_on_cpu(cs, s390_do_cpu_full_reset, cs);
#else
    cpu_reset(cs);
#endif

    scc->parent_realize(dev, errp);
}

static void s390_cpu_initfn(Object *obj)
{
    CPUState *cs = CPU(obj);
    S390CPU *cpu = S390_CPU(obj);
    CPUS390XState *env = &cpu->env;
    static bool inited;
    static int cpu_num = 0;
#if !defined(CONFIG_USER_ONLY)
    struct tm tm;
#endif

    cs->env_ptr = env;
    cpu_exec_init(env);
#if !defined(CONFIG_USER_ONLY)
    qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
    qemu_get_timedate(&tm, 0);
    env->tod_offset = TOD_UNIX_EPOCH +
                      (time2tod(mktimegm(&tm)) * 1000000000ULL);
    env->tod_basetime = 0;
    env->tod_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_tod_timer, cpu);
    env->cpu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_cpu_timer, cpu);
    s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
#endif
    env->cpu_num = cpu_num++;

    if (tcg_enabled() && !inited) {
        inited = true;
        s390x_translate_init();
    }
}

static void s390_cpu_finalize(Object *obj)
{
#if !defined(CONFIG_USER_ONLY)
    S390CPU *cpu = S390_CPU(obj);

    qemu_unregister_reset(s390_cpu_machine_reset_cb, cpu);
    g_free(cpu->irqstate);
#endif
}

#if !defined(CONFIG_USER_ONLY)
static bool disabled_wait(CPUState *cpu)
{
    return cpu->halted && !(S390_CPU(cpu)->env.psw.mask &
                            (PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK));
}

static unsigned s390_count_running_cpus(void)
{
    CPUState *cpu;
    int nr_running = 0;

    CPU_FOREACH(cpu) {
        uint8_t state = S390_CPU(cpu)->env.cpu_state;
        if (state == CPU_STATE_OPERATING ||
            state == CPU_STATE_LOAD) {
            if (!disabled_wait(cpu)) {
                nr_running++;
            }
        }
    }

    return nr_running;
}

unsigned int s390_cpu_halt(S390CPU *cpu)
{
    CPUState *cs = CPU(cpu);
    trace_cpu_halt(cs->cpu_index);

    if (!cs->halted) {
        cs->halted = 1;
        cs->exception_index = EXCP_HLT;
    }

    return s390_count_running_cpus();
}

void s390_cpu_unhalt(S390CPU *cpu)
{
    CPUState *cs = CPU(cpu);
    trace_cpu_unhalt(cs->cpu_index);

    if (cs->halted) {
        cs->halted = 0;
        cs->exception_index = -1;
    }
}

unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
 {
    trace_cpu_set_state(CPU(cpu)->cpu_index, cpu_state);

    switch (cpu_state) {
    case CPU_STATE_STOPPED:
    case CPU_STATE_CHECK_STOP:
        /* halt the cpu for common infrastructure */
        s390_cpu_halt(cpu);
        break;
    case CPU_STATE_OPERATING:
    case CPU_STATE_LOAD:
        /* unhalt the cpu for common infrastructure */
        s390_cpu_unhalt(cpu);
        break;
    default:
        error_report("Requested CPU state is not a valid S390 CPU state: %u",
                     cpu_state);
        exit(1);
    }
    if (kvm_enabled() && cpu->env.cpu_state != cpu_state) {
        kvm_s390_set_cpu_state(cpu, cpu_state);
    }
    cpu->env.cpu_state = cpu_state;

    return s390_count_running_cpus();
}
#endif

static void s390_cpu_class_init(ObjectClass *oc, void *data)
{
    S390CPUClass *scc = S390_CPU_CLASS(oc);
    CPUClass *cc = CPU_CLASS(scc);
    DeviceClass *dc = DEVICE_CLASS(oc);

    scc->parent_realize = dc->realize;
    dc->realize = s390_cpu_realizefn;

    scc->parent_reset = cc->reset;
#if !defined(CONFIG_USER_ONLY)
    scc->load_normal = s390_cpu_load_normal;
#endif
    scc->cpu_reset = s390_cpu_reset;
    scc->initial_cpu_reset = s390_cpu_initial_reset;
    cc->reset = s390_cpu_full_reset;
    cc->has_work = s390_cpu_has_work;
    cc->do_interrupt = s390_cpu_do_interrupt;
    cc->dump_state = s390_cpu_dump_state;
    cc->set_pc = s390_cpu_set_pc;
    cc->gdb_read_register = s390_cpu_gdb_read_register;
    cc->gdb_write_register = s390_cpu_gdb_write_register;
#ifdef CONFIG_USER_ONLY
    cc->handle_mmu_fault = s390_cpu_handle_mmu_fault;
#else
    cc->get_phys_page_debug = s390_cpu_get_phys_page_debug;
    cc->vmsd = &vmstate_s390_cpu;
    cc->write_elf64_note = s390_cpu_write_elf64_note;
    cc->write_elf64_qemunote = s390_cpu_write_elf64_qemunote;
    cc->cpu_exec_interrupt = s390_cpu_exec_interrupt;
#endif
    cc->gdb_num_core_regs = S390_NUM_CORE_REGS;
    cc->gdb_core_xml_file = "s390x-core64.xml";
}

static const TypeInfo s390_cpu_type_info = {
    .name = TYPE_S390_CPU,
    .parent = TYPE_CPU,
    .instance_size = sizeof(S390CPU),
    .instance_init = s390_cpu_initfn,
    .instance_finalize = s390_cpu_finalize,
    .abstract = false,
    .class_size = sizeof(S390CPUClass),
    .class_init = s390_cpu_class_init,
};

static void s390_cpu_register_types(void)
{
    type_register_static(&s390_cpu_type_info);
}

type_init(s390_cpu_register_types)
Commit	Line	Data
29e4bcb2 AF	1	/*
	2	* QEMU S/390 CPU
	3	*
1ac1a749 AF	4	* Copyright (c) 2009 Ulrich Hecht
1ac1a749 AF	5	* Copyright (c) 2011 Alexander Graf
29e4bcb2	6	* Copyright (c) 2012 SUSE LINUX Products GmbH
70bada03	7	* Copyright (c) 2012 IBM Corp.
29e4bcb2 AF	8	*
	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.
	13	*
	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.
	18	*
	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>
70bada03 JF	22	* Contributions after 2012-12-11 are licensed under the terms of the
70bada03 JF	23	* GNU GPL, version 2 or (at your option) any later version.
29e4bcb2 AF	24	*/
29e4bcb2 AF	25
564b863d	26	#include "cpu.h"
29e4bcb2	27	#include "qemu-common.h"
1de7afc9	28	#include "qemu/timer.h"
eb24f7c6	29	#include "qemu/error-report.h"
70bada03	30	#include "hw/hw.h"
eb24f7c6	31	#include "trace.h"
c7396bbb	32	#ifndef CONFIG_USER_ONLY
904e5fd5 VM	33	#include "sysemu/arch_init.h"
	34	#endif
	35
70bada03 JF	36	#define CR0_RESET 0xE0UL
	37	#define CR14_RESET 0xC2000000UL;
	38
904e5fd5 VM	39	/* generate CPU information for cpu -? */
	40	void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf)
	41	{
	42	#ifdef CONFIG_KVM
	43	(*cpu_fprintf)(f, "s390 %16s\n", "host");
	44	#endif
	45	}
29e4bcb2	46
904e5fd5 VM	47	#ifndef CONFIG_USER_ONLY
	48	CpuDefinitionInfoList arch_query_cpu_definitions(Error *errp)
	49	{
	50	CpuDefinitionInfoList *entry;
	51	CpuDefinitionInfo *info;
	52
	53	info = g_malloc0(sizeof(*info));
	54	info->name = g_strdup("host");
	55
	56	entry = g_malloc0(sizeof(*entry));
	57	entry->value = info;
	58
	59	return entry;
	60	}
	61	#endif
29e4bcb2	62
f45748f1 AF	63	static void s390_cpu_set_pc(CPUState *cs, vaddr value)
	64	{
	65	S390CPU *cpu = S390_CPU(cs);
	66
	67	cpu->env.psw.addr = value;
	68	}
	69
8c2e1b00 AF	70	static bool s390_cpu_has_work(CPUState *cs)
	71	{
	72	S390CPU *cpu = S390_CPU(cs);
	73	CPUS390XState *env = &cpu->env;
	74
	75	return (cs->interrupt_request & CPU_INTERRUPT_HARD) &&
	76	(env->psw.mask & PSW_MASK_EXT);
	77	}
	78
29c6157c CB	79	#if !defined(CONFIG_USER_ONLY)
	80	/* S390CPUClass::load_normal() */
	81	static void s390_cpu_load_normal(CPUState *s)
	82	{
	83	S390CPU *cpu = S390_CPU(s);
fdfba1a2	84	cpu->env.psw.addr = ldl_phys(s->as, 4) & PSW_MASK_ESA_ADDR;
29c6157c	85	cpu->env.psw.mask = PSW_MASK_32 \| PSW_MASK_64;
eb24f7c6	86	s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
29c6157c CB	87	}
	88	#endif
	89
f5ae2a4f	90	/* S390CPUClass::cpu_reset() */
29e4bcb2 AF	91	static void s390_cpu_reset(CPUState *s)
	92	{
	93	S390CPU *cpu = S390_CPU(s);
	94	S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
	95	CPUS390XState *env = &cpu->env;
	96
819bd309	97	env->pfault_token = -1UL;
f5ae2a4f	98	scc->parent_reset(s);
18ff9494	99	cpu->env.sigp_order = 0;
eb24f7c6	100	s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
00c8cb0a	101	tlb_flush(s, 1);
f5ae2a4f CB	102	}
	103
	104	/* S390CPUClass::initial_reset() */
	105	static void s390_cpu_initial_reset(CPUState *s)
	106	{
	107	S390CPU *cpu = S390_CPU(s);
	108	CPUS390XState *env = &cpu->env;
cc0d079d	109	int i;
f5ae2a4f CB	110
	111	s390_cpu_reset(s);
	112	/* initial reset does not touch regs,fregs and aregs */
f0c3c505	113	memset(&env->fpc, 0, offsetof(CPUS390XState, cpu_num) -
f5ae2a4f CB	114	offsetof(CPUS390XState, fpc));
	115
	116	/* architectured initial values for CR 0 and 14 */
	117	env->cregs[0] = CR0_RESET;
	118	env->cregs[14] = CR14_RESET;
819bd309 DD	119
819bd309 DD	120	env->pfault_token = -1UL;
7107e5a7	121	env->ext_index = -1;
cc0d079d AJ	122	for (i = 0; i < ARRAY_SIZE(env->io_index); i++) {
	123	env->io_index[i] = -1;
	124	}
49f5c9e9	125
4a33565f AJ	126	/* tininess for underflow is detected before rounding */
	127	set_float_detect_tininess(float_tininess_before_rounding,
	128	&env->fpu_status);
	129
49f5c9e9 TH	130	/* Reset state inside the kernel that we cannot access yet from QEMU. */
49f5c9e9 TH	131	if (kvm_enabled()) {
99607144	132	kvm_s390_reset_vcpu(cpu);
49f5c9e9	133	}
f5ae2a4f CB	134	}
	135
	136	/* CPUClass:reset() */
	137	static void s390_cpu_full_reset(CPUState *s)
	138	{
	139	S390CPU *cpu = S390_CPU(s);
	140	S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
	141	CPUS390XState *env = &cpu->env;
cc0d079d	142	int i;
f5ae2a4f	143
29e4bcb2	144	scc->parent_reset(s);
18ff9494	145	cpu->env.sigp_order = 0;
eb24f7c6	146	s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
29e4bcb2	147
f0c3c505	148	memset(env, 0, offsetof(CPUS390XState, cpu_num));
70bada03 JF	149
	150	/* architectured initial values for CR 0 and 14 */
	151	env->cregs[0] = CR0_RESET;
	152	env->cregs[14] = CR14_RESET;
819bd309 DD	153
819bd309 DD	154	env->pfault_token = -1UL;
7107e5a7	155	env->ext_index = -1;
cc0d079d AJ	156	for (i = 0; i < ARRAY_SIZE(env->io_index); i++) {
	157	env->io_index[i] = -1;
	158	}
819bd309	159
4a33565f AJ	160	/* tininess for underflow is detected before rounding */
	161	set_float_detect_tininess(float_tininess_before_rounding,
	162	&env->fpu_status);
	163
99607144	164	/* Reset state inside the kernel that we cannot access yet from QEMU. */
50a2c6e5 PB	165	if (kvm_enabled()) {
	166	kvm_s390_reset_vcpu(cpu);
	167	}
00c8cb0a	168	tlb_flush(s, 1);
29e4bcb2 AF	169	}
29e4bcb2 AF	170
70bada03 JF	171	#if !defined(CONFIG_USER_ONLY)
	172	static void s390_cpu_machine_reset_cb(void *opaque)
	173	{
	174	S390CPU *cpu = opaque;
	175
1fad8b3b	176	run_on_cpu(CPU(cpu), s390_do_cpu_full_reset, CPU(cpu));
70bada03 JF	177	}
	178	#endif
	179
1f136632 AF	180	static void s390_cpu_realizefn(DeviceState dev, Error *errp)
1f136632 AF	181	{
14a10fc3	182	CPUState *cs = CPU(dev);
1f136632 AF	183	S390CPUClass *scc = S390_CPU_GET_CLASS(dev);
1f136632 AF	184
73d510c9	185	s390_cpu_gdb_init(cs);
14a10fc3	186	qemu_init_vcpu(cs);
159855f0 DH	187	#if !defined(CONFIG_USER_ONLY)
	188	run_on_cpu(cs, s390_do_cpu_full_reset, cs);
	189	#else
14a10fc3	190	cpu_reset(cs);
159855f0	191	#endif
1f136632 AF	192
	193	scc->parent_realize(dev, errp);
	194	}
	195
8f22e0df AF	196	static void s390_cpu_initfn(Object *obj)
8f22e0df AF	197	{
c05efcb1	198	CPUState *cs = CPU(obj);
8f22e0df AF	199	S390CPU *cpu = S390_CPU(obj);
8f22e0df AF	200	CPUS390XState *env = &cpu->env;
2b7ac767	201	static bool inited;
8f22e0df AF	202	static int cpu_num = 0;
	203	#if !defined(CONFIG_USER_ONLY)
	204	struct tm tm;
	205	#endif
	206
c05efcb1	207	cs->env_ptr = env;
8f22e0df AF	208	cpu_exec_init(env);
8f22e0df AF	209	#if !defined(CONFIG_USER_ONLY)
70bada03	210	qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
8f22e0df AF	211	qemu_get_timedate(&tm, 0);
	212	env->tod_offset = TOD_UNIX_EPOCH +
	213	(time2tod(mktimegm(&tm)) * 1000000000ULL);
	214	env->tod_basetime = 0;
bc72ad67 AB	215	env->tod_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_tod_timer, cpu);
bc72ad67 AB	216	env->cpu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_cpu_timer, cpu);
eb24f7c6	217	s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
8f22e0df AF	218	#endif
8f22e0df AF	219	env->cpu_num = cpu_num++;
2b7ac767 AF	220
	221	if (tcg_enabled() && !inited) {
	222	inited = true;
	223	s390x_translate_init();
	224	}
8f22e0df AF	225	}
8f22e0df AF	226
d5627ce8 AF	227	static void s390_cpu_finalize(Object *obj)
	228	{
	229	#if !defined(CONFIG_USER_ONLY)
	230	S390CPU *cpu = S390_CPU(obj);
	231
	232	qemu_unregister_reset(s390_cpu_machine_reset_cb, cpu);
3cda44f7	233	g_free(cpu->irqstate);
d5627ce8 AF	234	#endif
	235	}
	236
75973bfe	237	#if !defined(CONFIG_USER_ONLY)
eb24f7c6 DH	238	static bool disabled_wait(CPUState *cpu)
	239	{
	240	return cpu->halted && !(S390_CPU(cpu)->env.psw.mask &
	241	(PSW_MASK_IO \| PSW_MASK_EXT \| PSW_MASK_MCHECK));
	242	}
	243
75973bfe DH	244	static unsigned s390_count_running_cpus(void)
	245	{
	246	CPUState *cpu;
	247	int nr_running = 0;
	248
	249	CPU_FOREACH(cpu) {
	250	uint8_t state = S390_CPU(cpu)->env.cpu_state;
	251	if (state == CPU_STATE_OPERATING \|\|
	252	state == CPU_STATE_LOAD) {
eb24f7c6 DH	253	if (!disabled_wait(cpu)) {
	254	nr_running++;
	255	}
75973bfe DH	256	}
	257	}
	258
	259	return nr_running;
	260	}
	261
eb24f7c6	262	unsigned int s390_cpu_halt(S390CPU *cpu)
75973bfe DH	263	{
75973bfe DH	264	CPUState *cs = CPU(cpu);
eb24f7c6	265	trace_cpu_halt(cs->cpu_index);
75973bfe	266
eb24f7c6 DH	267	if (!cs->halted) {
	268	cs->halted = 1;
	269	cs->exception_index = EXCP_HLT;
75973bfe	270	}
eb24f7c6 DH	271
eb24f7c6 DH	272	return s390_count_running_cpus();
75973bfe DH	273	}
75973bfe DH	274
eb24f7c6	275	void s390_cpu_unhalt(S390CPU *cpu)
75973bfe DH	276	{
75973bfe DH	277	CPUState *cs = CPU(cpu);
eb24f7c6	278	trace_cpu_unhalt(cs->cpu_index);
75973bfe	279
eb24f7c6 DH	280	if (cs->halted) {
	281	cs->halted = 0;
	282	cs->exception_index = -1;
	283	}
	284	}
	285
	286	unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
	287	{
	288	trace_cpu_set_state(CPU(cpu)->cpu_index, cpu_state);
	289
	290	switch (cpu_state) {
	291	case CPU_STATE_STOPPED:
	292	case CPU_STATE_CHECK_STOP:
	293	/* halt the cpu for common infrastructure */
	294	s390_cpu_halt(cpu);
	295	break;
	296	case CPU_STATE_OPERATING:
	297	case CPU_STATE_LOAD:
	298	/* unhalt the cpu for common infrastructure */
	299	s390_cpu_unhalt(cpu);
	300	break;
	301	default:
	302	error_report("Requested CPU state is not a valid S390 CPU state: %u",
	303	cpu_state);
	304	exit(1);
75973bfe	305	}
c9e659c9 DH	306	if (kvm_enabled() && cpu->env.cpu_state != cpu_state) {
	307	kvm_s390_set_cpu_state(cpu, cpu_state);
	308	}
eb24f7c6	309	cpu->env.cpu_state = cpu_state;
75973bfe DH	310
	311	return s390_count_running_cpus();
	312	}
	313	#endif
	314
29e4bcb2 AF	315	static void s390_cpu_class_init(ObjectClass oc, void data)
	316	{
	317	S390CPUClass *scc = S390_CPU_CLASS(oc);
	318	CPUClass *cc = CPU_CLASS(scc);
c7396bbb	319	DeviceClass *dc = DEVICE_CLASS(oc);
29e4bcb2	320
1f136632 AF	321	scc->parent_realize = dc->realize;
	322	dc->realize = s390_cpu_realizefn;
	323
29e4bcb2	324	scc->parent_reset = cc->reset;
29c6157c CB	325	#if !defined(CONFIG_USER_ONLY)
	326	scc->load_normal = s390_cpu_load_normal;
	327	#endif
f5ae2a4f CB	328	scc->cpu_reset = s390_cpu_reset;
	329	scc->initial_cpu_reset = s390_cpu_initial_reset;
	330	cc->reset = s390_cpu_full_reset;
8c2e1b00	331	cc->has_work = s390_cpu_has_work;
97a8ea5a	332	cc->do_interrupt = s390_cpu_do_interrupt;
878096ee	333	cc->dump_state = s390_cpu_dump_state;
f45748f1	334	cc->set_pc = s390_cpu_set_pc;
5b50e790 AF	335	cc->gdb_read_register = s390_cpu_gdb_read_register;
5b50e790 AF	336	cc->gdb_write_register = s390_cpu_gdb_write_register;
7510454e AF	337	#ifdef CONFIG_USER_ONLY
	338	cc->handle_mmu_fault = s390_cpu_handle_mmu_fault;
	339	#else
00b941e5	340	cc->get_phys_page_debug = s390_cpu_get_phys_page_debug;
ef1df130	341	cc->vmsd = &vmstate_s390_cpu;
9b4f38e1 ET	342	cc->write_elf64_note = s390_cpu_write_elf64_note;
9b4f38e1 ET	343	cc->write_elf64_qemunote = s390_cpu_write_elf64_qemunote;
02bb9bbf	344	cc->cpu_exec_interrupt = s390_cpu_exec_interrupt;
00b941e5	345	#endif
73d510c9 DH	346	cc->gdb_num_core_regs = S390_NUM_CORE_REGS;
73d510c9 DH	347	cc->gdb_core_xml_file = "s390x-core64.xml";
29e4bcb2 AF	348	}
	349
	350	static const TypeInfo s390_cpu_type_info = {
	351	.name = TYPE_S390_CPU,
	352	.parent = TYPE_CPU,
	353	.instance_size = sizeof(S390CPU),
8f22e0df	354	.instance_init = s390_cpu_initfn,
d5627ce8	355	.instance_finalize = s390_cpu_finalize,
29e4bcb2 AF	356	.abstract = false,
	357	.class_size = sizeof(S390CPUClass),
	358	.class_init = s390_cpu_class_init,
	359	};
	360
	361	static void s390_cpu_register_types(void)
	362	{
	363	type_register_static(&s390_cpu_type_info);
	364	}
	365
	366	type_init(s390_cpu_register_types)