cpu: Move halted and interrupt_request fields to CPUState
[qemu.git] / target-s390x / cpu.c
1 /*
2 * QEMU S/390 CPU
3 *
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.
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>
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.
24 */
25
26 #include "cpu.h"
27 #include "qemu-common.h"
28 #include "qemu/timer.h"
29 #include "hw/hw.h"
30 #ifndef CONFIG_USER_ONLY
31 #include "sysemu/arch_init.h"
32 #endif
33
34 #define CR0_RESET 0xE0UL
35 #define CR14_RESET 0xC2000000UL;
36
37 /* generate CPU information for cpu -? */
38 void s390_cpu_list(FILE *f, fprintf_function cpu_fprintf)
39 {
40 #ifdef CONFIG_KVM
41 (*cpu_fprintf)(f, "s390 %16s\n", "host");
42 #endif
43 }
44
45 #ifndef CONFIG_USER_ONLY
46 CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
47 {
48 CpuDefinitionInfoList *entry;
49 CpuDefinitionInfo *info;
50
51 info = g_malloc0(sizeof(*info));
52 info->name = g_strdup("host");
53
54 entry = g_malloc0(sizeof(*entry));
55 entry->value = info;
56
57 return entry;
58 }
59 #endif
60
61 /* CPUClass::reset() */
62 static void s390_cpu_reset(CPUState *s)
63 {
64 S390CPU *cpu = S390_CPU(s);
65 S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
66 CPUS390XState *env = &cpu->env;
67
68 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
69 qemu_log("CPU Reset (CPU %d)\n", s->cpu_index);
70 log_cpu_state(env, 0);
71 }
72
73 s390_del_running_cpu(cpu);
74
75 scc->parent_reset(s);
76
77 memset(env, 0, offsetof(CPUS390XState, breakpoints));
78
79 /* architectured initial values for CR 0 and 14 */
80 env->cregs[0] = CR0_RESET;
81 env->cregs[14] = CR14_RESET;
82 /* set halted to 1 to make sure we can add the cpu in
83 * s390_ipl_cpu code, where CPUState::halted is set back to 0
84 * after incrementing the cpu counter */
85 #if !defined(CONFIG_USER_ONLY)
86 s->halted = 1;
87 #endif
88 tlb_flush(env, 1);
89 }
90
91 #if !defined(CONFIG_USER_ONLY)
92 static void s390_cpu_machine_reset_cb(void *opaque)
93 {
94 S390CPU *cpu = opaque;
95
96 cpu_reset(CPU(cpu));
97 }
98 #endif
99
100 static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
101 {
102 S390CPU *cpu = S390_CPU(dev);
103 S390CPUClass *scc = S390_CPU_GET_CLASS(dev);
104
105 qemu_init_vcpu(&cpu->env);
106 cpu_reset(CPU(cpu));
107
108 scc->parent_realize(dev, errp);
109 }
110
111 static void s390_cpu_initfn(Object *obj)
112 {
113 CPUState *cs = CPU(obj);
114 S390CPU *cpu = S390_CPU(obj);
115 CPUS390XState *env = &cpu->env;
116 static bool inited;
117 static int cpu_num = 0;
118 #if !defined(CONFIG_USER_ONLY)
119 struct tm tm;
120 #endif
121
122 cs->env_ptr = env;
123 cpu_exec_init(env);
124 #if !defined(CONFIG_USER_ONLY)
125 qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
126 qemu_get_timedate(&tm, 0);
127 env->tod_offset = TOD_UNIX_EPOCH +
128 (time2tod(mktimegm(&tm)) * 1000000000ULL);
129 env->tod_basetime = 0;
130 env->tod_timer = qemu_new_timer_ns(vm_clock, s390x_tod_timer, cpu);
131 env->cpu_timer = qemu_new_timer_ns(vm_clock, s390x_cpu_timer, cpu);
132 /* set CPUState::halted state to 1 to avoid decrementing the running
133 * cpu counter in s390_cpu_reset to a negative number at
134 * initial ipl */
135 cs->halted = 1;
136 #endif
137 env->cpu_num = cpu_num++;
138 env->ext_index = -1;
139
140 if (tcg_enabled() && !inited) {
141 inited = true;
142 s390x_translate_init();
143 }
144 }
145
146 static void s390_cpu_finalize(Object *obj)
147 {
148 #if !defined(CONFIG_USER_ONLY)
149 S390CPU *cpu = S390_CPU(obj);
150
151 qemu_unregister_reset(s390_cpu_machine_reset_cb, cpu);
152 #endif
153 }
154
155 static const VMStateDescription vmstate_s390_cpu = {
156 .name = "cpu",
157 .unmigratable = 1,
158 };
159
160 static void s390_cpu_class_init(ObjectClass *oc, void *data)
161 {
162 S390CPUClass *scc = S390_CPU_CLASS(oc);
163 CPUClass *cc = CPU_CLASS(scc);
164 DeviceClass *dc = DEVICE_CLASS(oc);
165
166 scc->parent_realize = dc->realize;
167 dc->realize = s390_cpu_realizefn;
168
169 scc->parent_reset = cc->reset;
170 cc->reset = s390_cpu_reset;
171
172 dc->vmsd = &vmstate_s390_cpu;
173 }
174
175 static const TypeInfo s390_cpu_type_info = {
176 .name = TYPE_S390_CPU,
177 .parent = TYPE_CPU,
178 .instance_size = sizeof(S390CPU),
179 .instance_init = s390_cpu_initfn,
180 .instance_finalize = s390_cpu_finalize,
181 .abstract = false,
182 .class_size = sizeof(S390CPUClass),
183 .class_init = s390_cpu_class_init,
184 };
185
186 static void s390_cpu_register_types(void)
187 {
188 type_register_static(&s390_cpu_type_info);
189 }
190
191 type_init(s390_cpu_register_types)