a9ded6017e
there are some types of accelerators in qemu, and all accelerators have their own file except tcg. tcg accelerator is also defined in accel.c file. tcg accelerator file will be splited from accel.c and re-name to tcg-all.c. accel/ directory will be created to include kvm and tcg related files. Signed-off-by: Yang Zhong <yang.zhong@intel.com> Message-Id: <1496383606-18060-2-git-send-email-yang.zhong@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
129 lines
3.8 KiB
C
129 lines
3.8 KiB
C
/*
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* QEMU System Emulator, accelerator interfaces
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2014 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "sysemu/accel.h"
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#include "hw/boards.h"
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#include "qemu-common.h"
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#include "sysemu/arch_init.h"
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#include "sysemu/sysemu.h"
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#include "sysemu/kvm.h"
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#include "sysemu/qtest.h"
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#include "hw/xen/xen.h"
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#include "qom/object.h"
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static const TypeInfo accel_type = {
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.name = TYPE_ACCEL,
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.parent = TYPE_OBJECT,
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.class_size = sizeof(AccelClass),
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.instance_size = sizeof(AccelState),
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};
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/* Lookup AccelClass from opt_name. Returns NULL if not found */
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static AccelClass *accel_find(const char *opt_name)
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{
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char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
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AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name));
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g_free(class_name);
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return ac;
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}
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static int accel_init_machine(AccelClass *acc, MachineState *ms)
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{
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ObjectClass *oc = OBJECT_CLASS(acc);
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const char *cname = object_class_get_name(oc);
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AccelState *accel = ACCEL(object_new(cname));
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int ret;
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ms->accelerator = accel;
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*(acc->allowed) = true;
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ret = acc->init_machine(ms);
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if (ret < 0) {
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ms->accelerator = NULL;
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*(acc->allowed) = false;
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object_unref(OBJECT(accel));
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}
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return ret;
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}
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void configure_accelerator(MachineState *ms)
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{
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const char *p;
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char buf[10];
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int ret;
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bool accel_initialised = false;
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bool init_failed = false;
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AccelClass *acc = NULL;
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p = qemu_opt_get(qemu_get_machine_opts(), "accel");
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if (p == NULL) {
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/* Use the default "accelerator", tcg */
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p = "tcg";
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}
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while (!accel_initialised && *p != '\0') {
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if (*p == ':') {
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p++;
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}
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p = get_opt_name(buf, sizeof(buf), p, ':');
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acc = accel_find(buf);
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if (!acc) {
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fprintf(stderr, "\"%s\" accelerator not found.\n", buf);
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continue;
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}
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if (acc->available && !acc->available()) {
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printf("%s not supported for this target\n",
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acc->name);
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continue;
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}
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ret = accel_init_machine(acc, ms);
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if (ret < 0) {
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init_failed = true;
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fprintf(stderr, "failed to initialize %s: %s\n",
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acc->name,
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strerror(-ret));
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} else {
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accel_initialised = true;
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}
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}
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if (!accel_initialised) {
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if (!init_failed) {
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fprintf(stderr, "No accelerator found!\n");
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}
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exit(1);
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}
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if (init_failed) {
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fprintf(stderr, "Back to %s accelerator.\n", acc->name);
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}
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}
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static void register_accel_types(void)
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{
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type_register_static(&accel_type);
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}
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type_init(register_accel_types);
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