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_id_format
; /* CPU id format bit */
50 uint8_t cpu_ver
; /* CPU version, usually "ff" for kvm */
56 * bits 0-7: Zeroes (ff for kvm)
57 * bits 8-31: CPU ID (serial number)
58 * bits 32-47: Machine type
59 * bit 48: CPU ID format
62 #define cpuid_type(x) (((x) >> 16) & 0xffff)
63 #define cpuid_id(x) (((x) >> 32) & 0xffffff)
64 #define cpuid_ver(x) (((x) >> 56) & 0xff)
65 #define cpuid_format(x) (((x) >> 15) & 0x1)
67 #define lowest_ibc(x) (((uint32_t)(x) >> 16) & 0xfff)
68 #define unblocked_ibc(x) ((uint32_t)(x) & 0xfff)
69 #define has_ibc(x) (lowest_ibc(x) != 0)
71 #define S390_GEN_Z10 0xa
72 #define ibc_gen(x) (x == 0 ? 0 : ((x >> 4) + S390_GEN_Z10))
73 #define ibc_ec_ga(x) (x & 0xf)
75 uint32_t s390_get_hmfai(void);
76 uint8_t s390_get_mha_pow(void);
77 uint32_t s390_get_ibc_val(void);
78 static inline uint16_t s390_ibc_from_cpu_model(const S390CPUModel
*model
)
82 if (model
->def
->gen
>= S390_GEN_Z10
) {
83 ibc
= ((model
->def
->gen
- S390_GEN_Z10
) << 4) + model
->def
->ec_ga
;
87 void s390_get_feat_block(S390FeatType type
, uint8_t *data
);
88 bool s390_has_feat(S390Feat feat
);
89 uint8_t s390_get_gen_for_cpu_type(uint16_t type
);
90 static inline bool s390_known_cpu_type(uint16_t type
)
92 return s390_get_gen_for_cpu_type(type
) != 0;
94 static inline uint64_t s390_cpuid_from_cpu_model(const S390CPUModel
*model
)
96 return ((uint64_t)model
->cpu_ver
<< 56) |
97 ((uint64_t)model
->cpu_id
<< 32) |
98 ((uint64_t)model
->def
->type
<< 16) |
99 (model
->def
->gen
== 7 ? 0 : (uint64_t)model
->cpu_id_format
<< 15);
101 S390CPUDef
const *s390_find_cpu_def(uint16_t type
, uint8_t gen
, uint8_t ec_ga
,
102 S390FeatBitmap features
);
105 bool kvm_s390_cpu_models_supported(void);
106 void kvm_s390_get_host_cpu_model(S390CPUModel
*model
, Error
**errp
);
107 void kvm_s390_apply_cpu_model(const S390CPUModel
*model
, Error
**errp
);
109 static inline void kvm_s390_get_host_cpu_model(S390CPUModel
*model
,
113 static inline void kvm_s390_apply_cpu_model(const S390CPUModel
*model
,
117 static inline bool kvm_s390_cpu_models_supported(void)
123 #endif /* TARGET_S390X_CPU_MODELS_H */