[Qemu-devel] [RFC 07/28] s390x/cpumodel: register defined CPU models as subclasses

[David Hildenbrand <dahi@linux.vnet.ibm.com>]

This patch adds the CPU model definitions that are known on s390x -
like z900, zBC12 or z13. For each definition, introduce two CPU models:

1. Base model (e.g. z13-base): Minimum feature set we expect to be around
   on all z13 systems. These models are migration save and will never
   change.
2. Flexible models (e.g. z13): Models that can change between QEMU versions
   and will be extended over time as we implement further features that
   are already part of such a model in real hardware of certain
   configurations.

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
---
 target-s390x/cpu-qom.h    |   2 +
 target-s390x/cpu_models.c | 111 ++++++++++++++++++++++++++++++++++++++++++++++
 target-s390x/cpu_models.h |  36 +++++++++++++++
 3 files changed, 149 insertions(+)
 create mode 100644 target-s390x/cpu_models.h

diff --git a/target-s390x/cpu-qom.h b/target-s390x/cpu-qom.h
index ae0be73..d619cbd 100644
--- a/target-s390x/cpu-qom.h
+++ b/target-s390x/cpu-qom.h
@@ -21,6 +21,7 @@
 #define QEMU_S390_CPU_QOM_H
 
 #include "qom/cpu.h"
+#include "cpu_models.h"
 
 #define TYPE_S390_CPU "s390-cpu"
 
@@ -45,6 +46,7 @@ typedef struct S390CPUClass {
     /*< private >*/
     CPUClass parent_class;
     /*< public >*/
+    const S390CPUDef *cpu_def;
     bool kvm_required;
     bool migration_safe;
     const char *desc;
diff --git a/target-s390x/cpu_models.c b/target-s390x/cpu_models.c
index 18638a9..50b395a 100644
--- a/target-s390x/cpu_models.c
+++ b/target-s390x/cpu_models.c
@@ -12,11 +12,66 @@
 
 #include "qemu/osdep.h"
 #include "cpu.h"
+#include "gen-features.h"
 #include "qapi/error.h"
 #ifndef CONFIG_USER_ONLY
 #include "sysemu/arch_init.h"
 #endif
 
+#define CPUDEF_INIT(_type, _gen, _ec_ga, _mha_pow, _hmfai, _name, _desc) \
+    {                                                             \
+        .name = _name,                                            \
+        .type = _type,                                            \
+        .gen = _gen,                                              \
+        .ec_ga = _ec_ga,                                          \
+        .mha_pow = _mha_pow,                                      \
+        .hmfai = _hmfai,                                          \
+        .desc = _desc,                                            \
+        .base_feat = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _BASE },  \
+        .default_feat = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _DEFAULT },  \
+        .full_feat = { S390_FEAT_LIST_GEN ## _gen ## _GA ## _ec_ga ## _FULL },  \
+    }
+
+/*
+ * CPU definiton list in order of release. For now, base features of a
+ * following release are always a subset of base features of the previous
+ * release. Same is correct for the other feature sets.
+ * A BC release always follows the corresponding EC release.
+ */
+static const S390CPUDef s390_cpu_defs[] = {
+    CPUDEF_INIT(0x2064, 7, 1, 38, 0x00000000U, "z900", "IBM zSeries 900 GA1"),
+    CPUDEF_INIT(0x2064, 7, 2, 38, 0x00000000U, "z900.2", "IBM zSeries 900 GA2"),
+    CPUDEF_INIT(0x2064, 7, 3, 38, 0x00000000U, "z900.3", "IBM zSeries 900 GA3"),
+    CPUDEF_INIT(0x2066, 7, 3, 38, 0x00000000U, "z800", "IBM zSeries 800 GA1"),
+    CPUDEF_INIT(0x2084, 8, 1, 38, 0x00000000U, "z990", "IBM zSeries 990 GA1"),
+    CPUDEF_INIT(0x2084, 8, 2, 38, 0x00000000U, "z990.2", "IBM zSeries 990 GA2"),
+    CPUDEF_INIT(0x2084, 8, 3, 38, 0x00000000U, "z990.3", "IBM zSeries 990 GA3"),
+    CPUDEF_INIT(0x2086, 8, 3, 38, 0x00000000U, "z890", "IBM zSeries 880 GA1"),
+    CPUDEF_INIT(0x2084, 8, 4, 38, 0x00000000U, "z990.4", "IBM zSeries 990 GA4"),
+    CPUDEF_INIT(0x2086, 8, 4, 38, 0x00000000U, "z890.2", "IBM zSeries 880 GA2"),
+    CPUDEF_INIT(0x2084, 8, 5, 38, 0x00000000U, "z990.5", "IBM zSeries 990 GA5"),
+    CPUDEF_INIT(0x2086, 8, 5, 38, 0x00000000U, "z890.3", "IBM zSeries 880 GA3"),
+    CPUDEF_INIT(0x2094, 9, 1, 40, 0x00000000U, "z9EC", "IBM System z9 EC GA1"),
+    CPUDEF_INIT(0x2094, 9, 2, 40, 0x00000000U, "z9EC.2", "IBM System z9 EC GA2"),
+    CPUDEF_INIT(0x2096, 9, 2, 40, 0x00000000U, "z9BC", "IBM System z9 BC GA1"),
+    CPUDEF_INIT(0x2094, 9, 3, 40, 0x00000000U, "z9EC.3", "IBM System z9 EC GA3"),
+    CPUDEF_INIT(0x2096, 9, 3, 40, 0x00000000U, "z9BC.2", "IBM System z9 BC GA2"),
+    CPUDEF_INIT(0x2097, 10, 1, 43, 0x00000000U, "z10EC", "IBM System z10 EC GA1"),
+    CPUDEF_INIT(0x2097, 10, 2, 43, 0x00000000U, "z10EC.2", "IBM System z10 EC GA2"),
+    CPUDEF_INIT(0x2098, 10, 2, 43, 0x00000000U, "z10BC", "IBM System z10 BC GA1"),
+    CPUDEF_INIT(0x2097, 10, 3, 43, 0x00000000U, "z10EC.3", "IBM System z10 EC GA3"),
+    CPUDEF_INIT(0x2098, 10, 3, 43, 0x00000000U, "z10BC.2", "IBM System z10 BC GA2"),
+    CPUDEF_INIT(0x2817, 11, 1, 44, 0x08000000U, "z196", "IBM zEnterprise 196 GA1"),
+    CPUDEF_INIT(0x2817, 11, 2, 44, 0x08000000U, "z196.2", "IBM zEnterprise 196 GA2"),
+    CPUDEF_INIT(0x2818, 11, 2, 44, 0x08000000U, "z114", "IBM zEnterprise 114 GA1"),
+    CPUDEF_INIT(0x2827, 12, 1, 44, 0x08000000U, "zEC12", "IBM zEnterprise EC12 GA1"),
+    CPUDEF_INIT(0x2827, 12, 2, 44, 0x08000000U, "zEC12.2", "IBM zEnterprise EC12 GA2"),
+    CPUDEF_INIT(0x2828, 12, 2, 44, 0x08000000U, "zBC12", "IBM zEnterprise BC12 GA1"),
+    CPUDEF_INIT(0x2964, 13, 1, 47, 0x08000000U, "z13", "IBM z13 GA1"),
+    CPUDEF_INIT(0x2964, 13, 2, 47, 0x08000000U, "z13.2", "IBM z13 GA2"),
+    CPUDEF_INIT(0x2965, 13, 2, 47, 0x08000000U, "z13s", "IBM z13s GA1"),
+};
+
 struct S390PrintCpuListInfo {
     FILE *f;
     fprintf_function print;
@@ -84,6 +139,10 @@ void s390_realize_cpu_model(CPUState *cs, Error **errp)
     }
 }
 
+static void s390_cpu_model_initfn(Object *obj)
+{
+}
+
 #ifdef CONFIG_KVM
 static void s390_host_cpu_model_initfn(Object *obj)
 {
@@ -126,6 +185,25 @@ static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
 }
 #endif
 
+static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
+{
+    S390CPUClass *xcc = S390_CPU_CLASS(oc);
+
+    /* all base models are migration safe */
+    xcc->cpu_def = (const S390CPUDef *) data;
+    xcc->migration_safe = true;
+    xcc->desc = xcc->cpu_def->desc;
+}
+
+static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
+{
+    S390CPUClass *xcc = S390_CPU_CLASS(oc);
+
+    /* model that can change between QEMU versions */
+    xcc->cpu_def = (const S390CPUDef *) data;
+    xcc->desc = xcc->cpu_def->desc;
+}
+
 static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
 {
     S390CPUClass *xcc = S390_CPU_CLASS(oc);
@@ -143,6 +221,12 @@ static char *s390_cpu_type_name(const char *model_name)
     return g_strdup_printf(S390_CPU_TYPE_NAME("%s"), model_name);
 }
 
+/* Generate type name for a base cpu model. Caller has to free the string. */
+static char *s390_base_cpu_type_name(const char *model_name)
+{
+    return g_strdup_printf(S390_CPU_TYPE_NAME("%s-base"), model_name);
+}
+
 ObjectClass *s390_cpu_class_by_name(const char *name)
 {
     char *typename = s390_cpu_type_name(name);
@@ -173,6 +257,33 @@ static const TypeInfo host_s390_cpu_type_info = {
 
 static void register_types(void)
 {
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(s390_cpu_defs); i++) {
+        char *base_name = s390_base_cpu_type_name(s390_cpu_defs[i].name);
+        TypeInfo ti_base = {
+            .name = base_name,
+            .parent = TYPE_S390_CPU,
+            .instance_init = s390_cpu_model_initfn,
+            .instance_finalize = s390_cpu_model_finalize,
+            .class_init = s390_base_cpu_model_class_init,
+            .class_data = (void *) &s390_cpu_defs[i],
+        };
+        char *name = s390_cpu_type_name(s390_cpu_defs[i].name);
+       TypeInfo ti = {
+            .name = name,
+            .parent = TYPE_S390_CPU,
+            .instance_init = s390_cpu_model_initfn,
+            .instance_finalize = s390_cpu_model_finalize,
+            .class_init = s390_cpu_model_class_init,
+            .class_data = (void *) &s390_cpu_defs[i],
+        };
+
+        type_register_static(&ti_base);
+        type_register_static(&ti);
+        g_free(base_name);
+        g_free(name);
+    }
     type_register_static(&qemu_s390_cpu_type_info);
 #ifdef CONFIG_KVM
     type_register_static(&host_s390_cpu_type_info);
diff --git a/target-s390x/cpu_models.h b/target-s390x/cpu_models.h
new file mode 100644
index 0000000..13f7217
--- /dev/null
+++ b/target-s390x/cpu_models.h
@@ -0,0 +1,36 @@
+/*
+ * CPU models for s390x
+ *
+ * Copyright 2016 IBM Corp.
+ *
+ * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at
+ * your option) any later version. See the COPYING file in the top-level
+ * directory.
+ */
+
+#ifndef TARGET_S390X_CPU_MODELS_H
+#define TARGET_S390X_CPU_MODELS_H
+
+#include "cpu_features.h"
+#include "qom/cpu.h"
+
+/* static CPU definition */
+typedef struct S390CPUDef {
+    const char *name;       /* name exposed to the user */
+    const char *desc;       /* description exposed to the user */
+    uint8_t gen;            /* hw generation identification */
+    uint16_t type;          /* cpu type identification */
+    uint8_t ec_ga;          /* EC GA version (on which also the BC is based) */
+    uint8_t mha_pow;        /* Maximum Host Adress Power, mha = 2^pow-1 */
+    uint32_t hmfai;         /* hypervisor-managed facilities */
+    /* base/min features, must never be changed between QEMU versions */
+    S390FeatBitmap base_feat;
+    /* deafault features, QEMU version specific */
+    S390FeatBitmap default_feat;
+    /* max allowed features, QEMU version specific */
+    S390FeatBitmap full_feat;
+} S390CPUDef;
+
+#endif /* TARGET_S390X_CPU_MODELS_H */
-- 
2.6.6