[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 "qemu/osdep.h"
#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;

    /* architectured initial value for Breaking-Event-Address register */
    env->gbea = 1;

    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);
}

/* 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;

    /* architectured initial value for Breaking-Event-Address register */
    env->gbea = 1;

    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_disas_set_info(CPUState *cpu, disassemble_info *info)
{
    info->mach = bfd_mach_s390_64;
    info->print_insn = print_insn_s390;
}

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(cs, &error_abort);
#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 gchar *s390_gdb_arch_name(CPUState *cs)
{
    return g_strdup("s390:64-bit");
}

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->cpu_exec_interrupt = s390_cpu_exec_interrupt;
    cc->debug_excp_handler = s390x_cpu_debug_excp_handler;
#endif
    cc->disas_set_info = s390_cpu_disas_set_info;

    cc->gdb_num_core_regs = S390_NUM_CORE_REGS;
    cc->gdb_core_xml_file = "s390x-core64.xml";
    cc->gdb_arch_name = s390_gdb_arch_name;

    /*
     * Reason: s390_cpu_initfn() calls cpu_exec_init(), which saves
     * the object in cpus -> dangling pointer after final
     * object_unref().
     */
    dc->cannot_destroy_with_object_finalize_yet = true;
}

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
9615495a	26	#include "qemu/osdep.h"
564b863d	27	#include "cpu.h"
29e4bcb2	28	#include "qemu-common.h"
1de7afc9	29	#include "qemu/timer.h"
eb24f7c6	30	#include "qemu/error-report.h"
70bada03	31	#include "hw/hw.h"
eb24f7c6	32	#include "trace.h"
c7396bbb	33	#ifndef CONFIG_USER_ONLY
904e5fd5 VM	34	#include "sysemu/arch_init.h"
	35	#endif
	36
70bada03 JF	37	#define CR0_RESET 0xE0UL
	38	#define CR14_RESET 0xC2000000UL;
	39
904e5fd5 VM	40	/* generate CPU information for cpu -? */
	41	void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf)
	42	{
	43	#ifdef CONFIG_KVM
	44	(*cpu_fprintf)(f, "s390 %16s\n", "host");
	45	#endif
	46	}
29e4bcb2	47
904e5fd5 VM	48	#ifndef CONFIG_USER_ONLY
	49	CpuDefinitionInfoList arch_query_cpu_definitions(Error *errp)
	50	{
	51	CpuDefinitionInfoList *entry;
	52	CpuDefinitionInfo *info;
	53
	54	info = g_malloc0(sizeof(*info));
	55	info->name = g_strdup("host");
	56
	57	entry = g_malloc0(sizeof(*entry));
	58	entry->value = info;
	59
	60	return entry;
	61	}
	62	#endif
29e4bcb2	63
f45748f1 AF	64	static void s390_cpu_set_pc(CPUState *cs, vaddr value)
	65	{
	66	S390CPU *cpu = S390_CPU(cs);
	67
	68	cpu->env.psw.addr = value;
	69	}
	70
8c2e1b00 AF	71	static bool s390_cpu_has_work(CPUState *cs)
	72	{
	73	S390CPU *cpu = S390_CPU(cs);
	74	CPUS390XState *env = &cpu->env;
	75
	76	return (cs->interrupt_request & CPU_INTERRUPT_HARD) &&
	77	(env->psw.mask & PSW_MASK_EXT);
	78	}
	79
29c6157c CB	80	#if !defined(CONFIG_USER_ONLY)
	81	/* S390CPUClass::load_normal() */
	82	static void s390_cpu_load_normal(CPUState *s)
	83	{
	84	S390CPU *cpu = S390_CPU(s);
fdfba1a2	85	cpu->env.psw.addr = ldl_phys(s->as, 4) & PSW_MASK_ESA_ADDR;
29c6157c	86	cpu->env.psw.mask = PSW_MASK_32 \| PSW_MASK_64;
eb24f7c6	87	s390_cpu_set_state(CPU_STATE_OPERATING, cpu);
29c6157c CB	88	}
	89	#endif
	90
f5ae2a4f	91	/* S390CPUClass::cpu_reset() */
29e4bcb2 AF	92	static void s390_cpu_reset(CPUState *s)
	93	{
	94	S390CPU *cpu = S390_CPU(s);
	95	S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
	96	CPUS390XState *env = &cpu->env;
	97
819bd309	98	env->pfault_token = -1UL;
f5ae2a4f	99	scc->parent_reset(s);
18ff9494	100	cpu->env.sigp_order = 0;
eb24f7c6	101	s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
00c8cb0a	102	tlb_flush(s, 1);
f5ae2a4f CB	103	}
	104
	105	/* S390CPUClass::initial_reset() */
	106	static void s390_cpu_initial_reset(CPUState *s)
	107	{
	108	S390CPU *cpu = S390_CPU(s);
	109	CPUS390XState *env = &cpu->env;
cc0d079d	110	int i;
f5ae2a4f CB	111
	112	s390_cpu_reset(s);
	113	/* initial reset does not touch regs,fregs and aregs */
f0c3c505	114	memset(&env->fpc, 0, offsetof(CPUS390XState, cpu_num) -
f5ae2a4f CB	115	offsetof(CPUS390XState, fpc));
	116
	117	/* architectured initial values for CR 0 and 14 */
	118	env->cregs[0] = CR0_RESET;
	119	env->cregs[14] = CR14_RESET;
819bd309	120
3da0ab35 AJ	121	/* architectured initial value for Breaking-Event-Address register */
	122	env->gbea = 1;
	123
819bd309	124	env->pfault_token = -1UL;
7107e5a7	125	env->ext_index = -1;
cc0d079d AJ	126	for (i = 0; i < ARRAY_SIZE(env->io_index); i++) {
	127	env->io_index[i] = -1;
	128	}
49f5c9e9	129
4a33565f AJ	130	/* tininess for underflow is detected before rounding */
	131	set_float_detect_tininess(float_tininess_before_rounding,
	132	&env->fpu_status);
	133
49f5c9e9 TH	134	/* Reset state inside the kernel that we cannot access yet from QEMU. */
49f5c9e9 TH	135	if (kvm_enabled()) {
99607144	136	kvm_s390_reset_vcpu(cpu);
49f5c9e9	137	}
cbed0ba7	138	tlb_flush(s, 1);
f5ae2a4f CB	139	}
	140
	141	/* CPUClass:reset() */
	142	static void s390_cpu_full_reset(CPUState *s)
	143	{
	144	S390CPU *cpu = S390_CPU(s);
	145	S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
	146	CPUS390XState *env = &cpu->env;
cc0d079d	147	int i;
f5ae2a4f	148
29e4bcb2	149	scc->parent_reset(s);
18ff9494	150	cpu->env.sigp_order = 0;
eb24f7c6	151	s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
29e4bcb2	152
f0c3c505	153	memset(env, 0, offsetof(CPUS390XState, cpu_num));
70bada03 JF	154
	155	/* architectured initial values for CR 0 and 14 */
	156	env->cregs[0] = CR0_RESET;
	157	env->cregs[14] = CR14_RESET;
819bd309	158
3da0ab35 AJ	159	/* architectured initial value for Breaking-Event-Address register */
	160	env->gbea = 1;
	161
819bd309	162	env->pfault_token = -1UL;
7107e5a7	163	env->ext_index = -1;
cc0d079d AJ	164	for (i = 0; i < ARRAY_SIZE(env->io_index); i++) {
	165	env->io_index[i] = -1;
	166	}
819bd309	167
4a33565f AJ	168	/* tininess for underflow is detected before rounding */
	169	set_float_detect_tininess(float_tininess_before_rounding,
	170	&env->fpu_status);
	171
99607144	172	/* Reset state inside the kernel that we cannot access yet from QEMU. */
50a2c6e5 PB	173	if (kvm_enabled()) {
	174	kvm_s390_reset_vcpu(cpu);
	175	}
00c8cb0a	176	tlb_flush(s, 1);
29e4bcb2 AF	177	}
29e4bcb2 AF	178
70bada03 JF	179	#if !defined(CONFIG_USER_ONLY)
	180	static void s390_cpu_machine_reset_cb(void *opaque)
	181	{
	182	S390CPU *cpu = opaque;
	183
1fad8b3b	184	run_on_cpu(CPU(cpu), s390_do_cpu_full_reset, CPU(cpu));
70bada03 JF	185	}
	186	#endif
	187
dbad6b74 PC	188	static void s390_cpu_disas_set_info(CPUState cpu, disassemble_info info)
	189	{
	190	info->mach = bfd_mach_s390_64;
	191	info->print_insn = print_insn_s390;
	192	}
	193
1f136632 AF	194	static void s390_cpu_realizefn(DeviceState dev, Error *errp)
1f136632 AF	195	{
14a10fc3	196	CPUState *cs = CPU(dev);
1f136632 AF	197	S390CPUClass *scc = S390_CPU_GET_CLASS(dev);
1f136632 AF	198
73d510c9	199	s390_cpu_gdb_init(cs);
14a10fc3	200	qemu_init_vcpu(cs);
159855f0 DH	201	#if !defined(CONFIG_USER_ONLY)
	202	run_on_cpu(cs, s390_do_cpu_full_reset, cs);
	203	#else
14a10fc3	204	cpu_reset(cs);
159855f0	205	#endif
1f136632 AF	206
	207	scc->parent_realize(dev, errp);
	208	}
	209
8f22e0df AF	210	static void s390_cpu_initfn(Object *obj)
8f22e0df AF	211	{
c05efcb1	212	CPUState *cs = CPU(obj);
8f22e0df AF	213	S390CPU *cpu = S390_CPU(obj);
8f22e0df AF	214	CPUS390XState *env = &cpu->env;
2b7ac767	215	static bool inited;
8f22e0df AF	216	static int cpu_num = 0;
	217	#if !defined(CONFIG_USER_ONLY)
	218	struct tm tm;
	219	#endif
	220
c05efcb1	221	cs->env_ptr = env;
4bad9e39	222	cpu_exec_init(cs, &error_abort);
8f22e0df	223	#if !defined(CONFIG_USER_ONLY)
70bada03	224	qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
8f22e0df AF	225	qemu_get_timedate(&tm, 0);
	226	env->tod_offset = TOD_UNIX_EPOCH +
	227	(time2tod(mktimegm(&tm)) * 1000000000ULL);
	228	env->tod_basetime = 0;
bc72ad67 AB	229	env->tod_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_tod_timer, cpu);
bc72ad67 AB	230	env->cpu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, s390x_cpu_timer, cpu);
eb24f7c6	231	s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
8f22e0df AF	232	#endif
8f22e0df AF	233	env->cpu_num = cpu_num++;
2b7ac767 AF	234
	235	if (tcg_enabled() && !inited) {
	236	inited = true;
	237	s390x_translate_init();
	238	}
8f22e0df AF	239	}
8f22e0df AF	240
d5627ce8 AF	241	static void s390_cpu_finalize(Object *obj)
	242	{
	243	#if !defined(CONFIG_USER_ONLY)
	244	S390CPU *cpu = S390_CPU(obj);
	245
	246	qemu_unregister_reset(s390_cpu_machine_reset_cb, cpu);
3cda44f7	247	g_free(cpu->irqstate);
d5627ce8 AF	248	#endif
	249	}
	250
75973bfe	251	#if !defined(CONFIG_USER_ONLY)
eb24f7c6 DH	252	static bool disabled_wait(CPUState *cpu)
	253	{
	254	return cpu->halted && !(S390_CPU(cpu)->env.psw.mask &
	255	(PSW_MASK_IO \| PSW_MASK_EXT \| PSW_MASK_MCHECK));
	256	}
	257
75973bfe DH	258	static unsigned s390_count_running_cpus(void)
	259	{
	260	CPUState *cpu;
	261	int nr_running = 0;
	262
	263	CPU_FOREACH(cpu) {
	264	uint8_t state = S390_CPU(cpu)->env.cpu_state;
	265	if (state == CPU_STATE_OPERATING \|\|
	266	state == CPU_STATE_LOAD) {
eb24f7c6 DH	267	if (!disabled_wait(cpu)) {
	268	nr_running++;
	269	}
75973bfe DH	270	}
	271	}
	272
	273	return nr_running;
	274	}
	275
eb24f7c6	276	unsigned int s390_cpu_halt(S390CPU *cpu)
75973bfe DH	277	{
75973bfe DH	278	CPUState *cs = CPU(cpu);
eb24f7c6	279	trace_cpu_halt(cs->cpu_index);
75973bfe	280
eb24f7c6 DH	281	if (!cs->halted) {
	282	cs->halted = 1;
	283	cs->exception_index = EXCP_HLT;
75973bfe	284	}
eb24f7c6 DH	285
eb24f7c6 DH	286	return s390_count_running_cpus();
75973bfe DH	287	}
75973bfe DH	288
eb24f7c6	289	void s390_cpu_unhalt(S390CPU *cpu)
75973bfe DH	290	{
75973bfe DH	291	CPUState *cs = CPU(cpu);
eb24f7c6	292	trace_cpu_unhalt(cs->cpu_index);
75973bfe	293
eb24f7c6 DH	294	if (cs->halted) {
	295	cs->halted = 0;
	296	cs->exception_index = -1;
	297	}
	298	}
	299
	300	unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu)
	301	{
	302	trace_cpu_set_state(CPU(cpu)->cpu_index, cpu_state);
	303
	304	switch (cpu_state) {
	305	case CPU_STATE_STOPPED:
	306	case CPU_STATE_CHECK_STOP:
	307	/* halt the cpu for common infrastructure */
	308	s390_cpu_halt(cpu);
	309	break;
	310	case CPU_STATE_OPERATING:
	311	case CPU_STATE_LOAD:
	312	/* unhalt the cpu for common infrastructure */
	313	s390_cpu_unhalt(cpu);
	314	break;
	315	default:
	316	error_report("Requested CPU state is not a valid S390 CPU state: %u",
	317	cpu_state);
	318	exit(1);
75973bfe	319	}
c9e659c9 DH	320	if (kvm_enabled() && cpu->env.cpu_state != cpu_state) {
	321	kvm_s390_set_cpu_state(cpu, cpu_state);
	322	}
eb24f7c6	323	cpu->env.cpu_state = cpu_state;
75973bfe DH	324
	325	return s390_count_running_cpus();
	326	}
	327	#endif
	328
b3820e6c DH	329	static gchar s390_gdb_arch_name(CPUState cs)
	330	{
	331	return g_strdup("s390:64-bit");
	332	}
	333
29e4bcb2 AF	334	static void s390_cpu_class_init(ObjectClass oc, void data)
	335	{
	336	S390CPUClass *scc = S390_CPU_CLASS(oc);
	337	CPUClass *cc = CPU_CLASS(scc);
c7396bbb	338	DeviceClass *dc = DEVICE_CLASS(oc);
29e4bcb2	339
1f136632 AF	340	scc->parent_realize = dc->realize;
	341	dc->realize = s390_cpu_realizefn;
	342
29e4bcb2	343	scc->parent_reset = cc->reset;
29c6157c CB	344	#if !defined(CONFIG_USER_ONLY)
	345	scc->load_normal = s390_cpu_load_normal;
	346	#endif
f5ae2a4f CB	347	scc->cpu_reset = s390_cpu_reset;
	348	scc->initial_cpu_reset = s390_cpu_initial_reset;
	349	cc->reset = s390_cpu_full_reset;
8c2e1b00	350	cc->has_work = s390_cpu_has_work;
97a8ea5a	351	cc->do_interrupt = s390_cpu_do_interrupt;
878096ee	352	cc->dump_state = s390_cpu_dump_state;
f45748f1	353	cc->set_pc = s390_cpu_set_pc;
5b50e790 AF	354	cc->gdb_read_register = s390_cpu_gdb_read_register;
5b50e790 AF	355	cc->gdb_write_register = s390_cpu_gdb_write_register;
7510454e AF	356	#ifdef CONFIG_USER_ONLY
	357	cc->handle_mmu_fault = s390_cpu_handle_mmu_fault;
	358	#else
00b941e5	359	cc->get_phys_page_debug = s390_cpu_get_phys_page_debug;
ef1df130	360	cc->vmsd = &vmstate_s390_cpu;
9b4f38e1	361	cc->write_elf64_note = s390_cpu_write_elf64_note;
02bb9bbf	362	cc->cpu_exec_interrupt = s390_cpu_exec_interrupt;
311918b9	363	cc->debug_excp_handler = s390x_cpu_debug_excp_handler;
00b941e5	364	#endif
dbad6b74 PC	365	cc->disas_set_info = s390_cpu_disas_set_info;
dbad6b74 PC	366
73d510c9 DH	367	cc->gdb_num_core_regs = S390_NUM_CORE_REGS;
73d510c9 DH	368	cc->gdb_core_xml_file = "s390x-core64.xml";
b3820e6c	369	cc->gdb_arch_name = s390_gdb_arch_name;
4c315c27 MA	370
	371	/*
	372	* Reason: s390_cpu_initfn() calls cpu_exec_init(), which saves
	373	* the object in cpus -> dangling pointer after final
	374	* object_unref().
	375	*/
	376	dc->cannot_destroy_with_object_finalize_yet = true;
29e4bcb2 AF	377	}
	378
	379	static const TypeInfo s390_cpu_type_info = {
	380	.name = TYPE_S390_CPU,
	381	.parent = TYPE_CPU,
	382	.instance_size = sizeof(S390CPU),
8f22e0df	383	.instance_init = s390_cpu_initfn,
d5627ce8	384	.instance_finalize = s390_cpu_finalize,
29e4bcb2 AF	385	.abstract = false,
	386	.class_size = sizeof(S390CPUClass),
	387	.class_init = s390_cpu_class_init,
	388	};
	389
	390	static void s390_cpu_register_types(void)
	391	{
	392	type_register_static(&s390_cpu_type_info);
	393	}
	394
	395	type_init(s390_cpu_register_types)