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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/accel.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/accel.c')
-rw-r--r--qemu/accel.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/qemu/accel.c b/qemu/accel.c
new file mode 100644
index 000000000..74e41daaa
--- /dev/null
+++ b/qemu/accel.c
@@ -0,0 +1,157 @@
+/*
+ * QEMU System Emulator, accelerator interfaces
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ * Copyright (c) 2014 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "sysemu/accel.h"
+#include "hw/boards.h"
+#include "qemu-common.h"
+#include "sysemu/arch_init.h"
+#include "sysemu/sysemu.h"
+#include "sysemu/kvm.h"
+#include "sysemu/qtest.h"
+#include "hw/xen/xen.h"
+#include "qom/object.h"
+#include "hw/boards.h"
+
+int tcg_tb_size;
+static bool tcg_allowed = true;
+
+static int tcg_init(MachineState *ms)
+{
+ tcg_exec_init(tcg_tb_size * 1024 * 1024);
+ return 0;
+}
+
+static const TypeInfo accel_type = {
+ .name = TYPE_ACCEL,
+ .parent = TYPE_OBJECT,
+ .class_size = sizeof(AccelClass),
+ .instance_size = sizeof(AccelState),
+};
+
+/* Lookup AccelClass from opt_name. Returns NULL if not found */
+static AccelClass *accel_find(const char *opt_name)
+{
+ char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
+ AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name));
+ g_free(class_name);
+ return ac;
+}
+
+static int accel_init_machine(AccelClass *acc, MachineState *ms)
+{
+ ObjectClass *oc = OBJECT_CLASS(acc);
+ const char *cname = object_class_get_name(oc);
+ AccelState *accel = ACCEL(object_new(cname));
+ int ret;
+ ms->accelerator = accel;
+ *(acc->allowed) = true;
+ ret = acc->init_machine(ms);
+ if (ret < 0) {
+ ms->accelerator = NULL;
+ *(acc->allowed) = false;
+ object_unref(OBJECT(accel));
+ }
+ return ret;
+}
+
+int configure_accelerator(MachineState *ms)
+{
+ const char *p;
+ char buf[10];
+ int ret;
+ bool accel_initialised = false;
+ bool init_failed = false;
+ AccelClass *acc = NULL;
+
+ p = qemu_opt_get(qemu_get_machine_opts(), "accel");
+ if (p == NULL) {
+ /* Use the default "accelerator", tcg */
+ p = "tcg";
+ }
+
+ while (!accel_initialised && *p != '\0') {
+ if (*p == ':') {
+ p++;
+ }
+ p = get_opt_name(buf, sizeof(buf), p, ':');
+ acc = accel_find(buf);
+ if (!acc) {
+ fprintf(stderr, "\"%s\" accelerator not found.\n", buf);
+ continue;
+ }
+ if (acc->available && !acc->available()) {
+ printf("%s not supported for this target\n",
+ acc->name);
+ continue;
+ }
+ ret = accel_init_machine(acc, ms);
+ if (ret < 0) {
+ init_failed = true;
+ fprintf(stderr, "failed to initialize %s: %s\n",
+ acc->name,
+ strerror(-ret));
+ } else {
+ accel_initialised = true;
+ }
+ }
+
+ if (!accel_initialised) {
+ if (!init_failed) {
+ fprintf(stderr, "No accelerator found!\n");
+ }
+ exit(1);
+ }
+
+ if (init_failed) {
+ fprintf(stderr, "Back to %s accelerator.\n", acc->name);
+ }
+
+ return !accel_initialised;
+}
+
+
+static void tcg_accel_class_init(ObjectClass *oc, void *data)
+{
+ AccelClass *ac = ACCEL_CLASS(oc);
+ ac->name = "tcg";
+ ac->init_machine = tcg_init;
+ ac->allowed = &tcg_allowed;
+}
+
+#define TYPE_TCG_ACCEL ACCEL_CLASS_NAME("tcg")
+
+static const TypeInfo tcg_accel_type = {
+ .name = TYPE_TCG_ACCEL,
+ .parent = TYPE_ACCEL,
+ .class_init = tcg_accel_class_init,
+};
+
+static void register_accel_types(void)
+{
+ type_register_static(&accel_type);
+ type_register_static(&tcg_accel_type);
+}
+
+type_init(register_accel_types);