4 * Copyright 2016 IBM Corp.
6 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com>
8 * This work is licensed under the terms of the GNU GPL, version 2 or (at
9 * your option) any later version. See the COPYING file in the top-level
13 #ifndef TARGET_S390X_CPU_MODELS_H
14 #define TARGET_S390X_CPU_MODELS_H
16 #include "cpu_features.h"
19 /* static CPU definition */
20 typedef struct S390CPUDef
{
21 const char *name
; /* name exposed to the user */
22 const char *desc
; /* description exposed to the user */
23 uint8_t gen
; /* hw generation identification */
24 uint16_t type
; /* cpu type identification */
25 uint8_t ec_ga
; /* EC GA version (on which also the BC is based) */
26 uint8_t mha_pow
; /* Maximum Host Adress Power, mha = 2^pow-1 */
27 uint32_t hmfai
; /* hypervisor-managed facilities */
28 /* base/min features, must never be changed between QEMU versions */
29 S390FeatBitmap base_feat
;
30 /* used to init base_feat from generated data */
31 S390FeatInit base_init
;
32 /* deafault features, QEMU version specific */
33 S390FeatBitmap default_feat
;
34 /* used to init default_feat from generated data */
35 S390FeatInit default_init
;
36 /* max allowed features, QEMU version specific */
37 S390FeatBitmap full_feat
;
38 /* used to init full_feat from generated data */
39 S390FeatInit full_init
;
42 /* CPU model based on a CPU definition */
43 typedef struct S390CPUModel
{
44 const S390CPUDef
*def
;
45 S390FeatBitmap features
;
46 /* values copied from the "host" model, can change during migration */
47 uint16_t lowest_ibc
; /* lowest IBC that the hardware supports */
48 uint32_t cpu_id
; /* CPU id */
49 uint8_t cpu_ver
; /* CPU version, usually "ff" for kvm */
52 #define S390_GEN_Z10 0xa
54 uint8_t s390_get_mha_pow(void);
55 uint32_t s390_get_ibc_val(void);
56 static inline uint16_t s390_ibc_from_cpu_model(const S390CPUModel
*model
)
60 if (model
->def
->gen
>= S390_GEN_Z10
) {
61 ibc
= ((model
->def
->gen
- S390_GEN_Z10
) << 4) + model
->def
->ec_ga
;
65 void s390_get_feat_block(S390FeatType type
, uint8_t *data
);
66 bool s390_has_feat(S390Feat feat
);
68 #endif /* TARGET_S390X_CPU_MODELS_H */