virtio: make virtio_queue_notify_vq static
[qemu/ar7.git] / qom / cpu.c
blobc9007d3d06e217a62d03878ebb5d0d14b22b3eb2
1 /*
2 * QEMU CPU model
4 * Copyright (c) 2012-2014 SUSE LINUX Products GmbH
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see
18 * <http://www.gnu.org/licenses/gpl-2.0.html>
21 #include "qemu/osdep.h"
22 #include "qapi/error.h"
23 #include "qemu-common.h"
24 #include "qom/cpu.h"
25 #include "sysemu/kvm.h"
26 #include "qemu/notify.h"
27 #include "qemu/log.h"
28 #include "exec/log.h"
29 #include "qemu/error-report.h"
30 #include "sysemu/sysemu.h"
32 bool cpu_exists(int64_t id)
34 CPUState *cpu;
36 CPU_FOREACH(cpu) {
37 CPUClass *cc = CPU_GET_CLASS(cpu);
39 if (cc->get_arch_id(cpu) == id) {
40 return true;
43 return false;
46 CPUState *cpu_generic_init(const char *typename, const char *cpu_model)
48 char *str, *name, *featurestr;
49 CPUState *cpu;
50 ObjectClass *oc;
51 CPUClass *cc;
52 Error *err = NULL;
54 str = g_strdup(cpu_model);
55 name = strtok(str, ",");
57 oc = cpu_class_by_name(typename, name);
58 if (oc == NULL) {
59 g_free(str);
60 return NULL;
63 cpu = CPU(object_new(object_class_get_name(oc)));
64 cc = CPU_GET_CLASS(cpu);
66 featurestr = strtok(NULL, ",");
67 cc->parse_features(cpu, featurestr, &err);
68 g_free(str);
69 if (err != NULL) {
70 goto out;
73 object_property_set_bool(OBJECT(cpu), true, "realized", &err);
75 out:
76 if (err != NULL) {
77 error_report_err(err);
78 object_unref(OBJECT(cpu));
79 return NULL;
82 return cpu;
85 bool cpu_paging_enabled(const CPUState *cpu)
87 CPUClass *cc = CPU_GET_CLASS(cpu);
89 return cc->get_paging_enabled(cpu);
92 static bool cpu_common_get_paging_enabled(const CPUState *cpu)
94 return false;
97 void cpu_get_memory_mapping(CPUState *cpu, MemoryMappingList *list,
98 Error **errp)
100 CPUClass *cc = CPU_GET_CLASS(cpu);
102 cc->get_memory_mapping(cpu, list, errp);
105 static void cpu_common_get_memory_mapping(CPUState *cpu,
106 MemoryMappingList *list,
107 Error **errp)
109 error_setg(errp, "Obtaining memory mappings is unsupported on this CPU.");
112 void cpu_reset_interrupt(CPUState *cpu, int mask)
114 cpu->interrupt_request &= ~mask;
117 void cpu_exit(CPUState *cpu)
119 cpu->exit_request = 1;
120 /* Ensure cpu_exec will see the exit request after TCG has exited. */
121 smp_wmb();
122 cpu->tcg_exit_req = 1;
125 int cpu_write_elf32_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
126 void *opaque)
128 CPUClass *cc = CPU_GET_CLASS(cpu);
130 return (*cc->write_elf32_qemunote)(f, cpu, opaque);
133 static int cpu_common_write_elf32_qemunote(WriteCoreDumpFunction f,
134 CPUState *cpu, void *opaque)
136 return 0;
139 int cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cpu,
140 int cpuid, void *opaque)
142 CPUClass *cc = CPU_GET_CLASS(cpu);
144 return (*cc->write_elf32_note)(f, cpu, cpuid, opaque);
147 static int cpu_common_write_elf32_note(WriteCoreDumpFunction f,
148 CPUState *cpu, int cpuid,
149 void *opaque)
151 return -1;
154 int cpu_write_elf64_qemunote(WriteCoreDumpFunction f, CPUState *cpu,
155 void *opaque)
157 CPUClass *cc = CPU_GET_CLASS(cpu);
159 return (*cc->write_elf64_qemunote)(f, cpu, opaque);
162 static int cpu_common_write_elf64_qemunote(WriteCoreDumpFunction f,
163 CPUState *cpu, void *opaque)
165 return 0;
168 int cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cpu,
169 int cpuid, void *opaque)
171 CPUClass *cc = CPU_GET_CLASS(cpu);
173 return (*cc->write_elf64_note)(f, cpu, cpuid, opaque);
176 static int cpu_common_write_elf64_note(WriteCoreDumpFunction f,
177 CPUState *cpu, int cpuid,
178 void *opaque)
180 return -1;
184 static int cpu_common_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg)
186 return 0;
189 static int cpu_common_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg)
191 return 0;
194 static bool cpu_common_debug_check_watchpoint(CPUState *cpu, CPUWatchpoint *wp)
196 /* If no extra check is required, QEMU watchpoint match can be considered
197 * as an architectural match.
199 return true;
202 bool target_words_bigendian(void);
203 static bool cpu_common_virtio_is_big_endian(CPUState *cpu)
205 return target_words_bigendian();
208 static void cpu_common_noop(CPUState *cpu)
212 static bool cpu_common_exec_interrupt(CPUState *cpu, int int_req)
214 return false;
217 void cpu_dump_state(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
218 int flags)
220 CPUClass *cc = CPU_GET_CLASS(cpu);
222 if (cc->dump_state) {
223 cpu_synchronize_state(cpu);
224 cc->dump_state(cpu, f, cpu_fprintf, flags);
228 void cpu_dump_statistics(CPUState *cpu, FILE *f, fprintf_function cpu_fprintf,
229 int flags)
231 CPUClass *cc = CPU_GET_CLASS(cpu);
233 if (cc->dump_statistics) {
234 cc->dump_statistics(cpu, f, cpu_fprintf, flags);
238 void cpu_reset(CPUState *cpu)
240 CPUClass *klass = CPU_GET_CLASS(cpu);
242 if (klass->reset != NULL) {
243 (*klass->reset)(cpu);
247 static void cpu_common_reset(CPUState *cpu)
249 CPUClass *cc = CPU_GET_CLASS(cpu);
251 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
252 qemu_log("CPU Reset (CPU %d)\n", cpu->cpu_index);
253 log_cpu_state(cpu, cc->reset_dump_flags);
256 cpu->interrupt_request = 0;
257 cpu->current_tb = NULL;
258 cpu->halted = 0;
259 cpu->mem_io_pc = 0;
260 cpu->mem_io_vaddr = 0;
261 cpu->icount_extra = 0;
262 cpu->icount_decr.u32 = 0;
263 cpu->can_do_io = 1;
264 cpu->exception_index = -1;
265 cpu->crash_occurred = false;
266 memset(cpu->tb_jmp_cache, 0, TB_JMP_CACHE_SIZE * sizeof(void *));
269 static bool cpu_common_has_work(CPUState *cs)
271 return false;
274 ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model)
276 CPUClass *cc = CPU_CLASS(object_class_by_name(typename));
278 return cc->class_by_name(cpu_model);
281 static ObjectClass *cpu_common_class_by_name(const char *cpu_model)
283 return NULL;
286 static void cpu_common_parse_features(CPUState *cpu, char *features,
287 Error **errp)
289 char *featurestr; /* Single "key=value" string being parsed */
290 char *val;
291 Error *err = NULL;
293 featurestr = features ? strtok(features, ",") : NULL;
295 while (featurestr) {
296 val = strchr(featurestr, '=');
297 if (val) {
298 *val = 0;
299 val++;
300 object_property_parse(OBJECT(cpu), val, featurestr, &err);
301 if (err) {
302 error_propagate(errp, err);
303 return;
305 } else {
306 error_setg(errp, "Expected key=value format, found %s.",
307 featurestr);
308 return;
310 featurestr = strtok(NULL, ",");
314 static void cpu_common_realizefn(DeviceState *dev, Error **errp)
316 CPUState *cpu = CPU(dev);
318 if (dev->hotplugged) {
319 cpu_synchronize_post_init(cpu);
320 cpu_resume(cpu);
324 static void cpu_common_initfn(Object *obj)
326 CPUState *cpu = CPU(obj);
327 CPUClass *cc = CPU_GET_CLASS(obj);
329 cpu->cpu_index = -1;
330 cpu->gdb_num_regs = cpu->gdb_num_g_regs = cc->gdb_num_core_regs;
331 qemu_mutex_init(&cpu->work_mutex);
332 QTAILQ_INIT(&cpu->breakpoints);
333 QTAILQ_INIT(&cpu->watchpoints);
336 static void cpu_common_finalize(Object *obj)
338 cpu_exec_exit(CPU(obj));
341 static int64_t cpu_common_get_arch_id(CPUState *cpu)
343 return cpu->cpu_index;
346 static void cpu_class_init(ObjectClass *klass, void *data)
348 DeviceClass *dc = DEVICE_CLASS(klass);
349 CPUClass *k = CPU_CLASS(klass);
351 k->class_by_name = cpu_common_class_by_name;
352 k->parse_features = cpu_common_parse_features;
353 k->reset = cpu_common_reset;
354 k->get_arch_id = cpu_common_get_arch_id;
355 k->has_work = cpu_common_has_work;
356 k->get_paging_enabled = cpu_common_get_paging_enabled;
357 k->get_memory_mapping = cpu_common_get_memory_mapping;
358 k->write_elf32_qemunote = cpu_common_write_elf32_qemunote;
359 k->write_elf32_note = cpu_common_write_elf32_note;
360 k->write_elf64_qemunote = cpu_common_write_elf64_qemunote;
361 k->write_elf64_note = cpu_common_write_elf64_note;
362 k->gdb_read_register = cpu_common_gdb_read_register;
363 k->gdb_write_register = cpu_common_gdb_write_register;
364 k->virtio_is_big_endian = cpu_common_virtio_is_big_endian;
365 k->debug_excp_handler = cpu_common_noop;
366 k->debug_check_watchpoint = cpu_common_debug_check_watchpoint;
367 k->cpu_exec_enter = cpu_common_noop;
368 k->cpu_exec_exit = cpu_common_noop;
369 k->cpu_exec_interrupt = cpu_common_exec_interrupt;
370 dc->realize = cpu_common_realizefn;
372 * Reason: CPUs still need special care by board code: wiring up
373 * IRQs, adding reset handlers, halting non-first CPUs, ...
375 dc->cannot_instantiate_with_device_add_yet = true;
378 static const TypeInfo cpu_type_info = {
379 .name = TYPE_CPU,
380 .parent = TYPE_DEVICE,
381 .instance_size = sizeof(CPUState),
382 .instance_init = cpu_common_initfn,
383 .instance_finalize = cpu_common_finalize,
384 .abstract = true,
385 .class_size = sizeof(CPUClass),
386 .class_init = cpu_class_init,
389 static void cpu_register_types(void)
391 type_register_static(&cpu_type_info);
394 type_init(cpu_register_types)