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"
17 #include "target/s390x/gen-features.h"
18 #include "hw/core/cpu.h"
20 /* static CPU definition */
21 typedef struct S390CPUDef
{
22 const char *name
; /* name exposed to the user */
23 const char *desc
; /* description exposed to the user */
24 uint8_t gen
; /* hw generation identification */
25 uint16_t type
; /* cpu type identification */
26 uint8_t ec_ga
; /* EC GA version (on which also the BC is based) */
27 uint8_t mha_pow
; /* maximum host address power, mha = 2^pow-1 */
28 uint32_t hmfai
; /* hypervisor-managed facilities */
29 /* base/min features, must never be changed between QEMU versions */
30 S390FeatBitmap base_feat
;
31 /* used to init base_feat from generated data */
32 S390FeatInit base_init
;
33 /* default features, QEMU version specific */
34 S390FeatBitmap default_feat
;
35 /* used to init default_feat from generated data */
36 S390FeatInit default_init
;
37 /* max allowed features, QEMU version specific */
38 S390FeatBitmap full_feat
;
39 /* used to init full_feat from generated data */
40 S390FeatInit full_init
;
43 /* CPU model based on a CPU definition */
44 typedef struct S390CPUModel
{
45 const S390CPUDef
*def
;
46 S390FeatBitmap features
;
47 /* values copied from the "host" model, can change during migration */
48 uint16_t lowest_ibc
; /* lowest IBC that the hardware supports */
49 uint32_t cpu_id
; /* CPU id */
50 uint8_t cpu_id_format
; /* CPU id format bit */
51 uint8_t cpu_ver
; /* CPU version, usually "ff" for kvm */
57 * bits 0-7: Zeroes (ff for kvm)
58 * bits 8-31: CPU ID (serial number)
59 * bits 32-47: Machine type
60 * bit 48: CPU ID format
63 #define cpuid_type(x) (((x) >> 16) & 0xffff)
64 #define cpuid_id(x) (((x) >> 32) & 0xffffff)
65 #define cpuid_ver(x) (((x) >> 56) & 0xff)
66 #define cpuid_format(x) (((x) >> 15) & 0x1)
68 #define lowest_ibc(x) (((uint32_t)(x) >> 16) & 0xfff)
69 #define unblocked_ibc(x) ((uint32_t)(x) & 0xfff)
70 #define has_ibc(x) (lowest_ibc(x) != 0)
72 #define S390_GEN_Z10 0xa
73 #define ibc_gen(x) (x == 0 ? 0 : ((x >> 4) + S390_GEN_Z10))
74 #define ibc_ec_ga(x) (x & 0xf)
76 void s390_cpudef_featoff(uint8_t gen
, uint8_t ec_ga
, S390Feat feat
);
77 void s390_cpudef_featoff_greater(uint8_t gen
, uint8_t ec_ga
, S390Feat feat
);
78 void s390_cpudef_group_featoff_greater(uint8_t gen
, uint8_t ec_ga
,
80 uint32_t s390_get_hmfai(void);
81 uint8_t s390_get_mha_pow(void);
82 uint32_t s390_get_ibc_val(void);
83 static inline uint16_t s390_ibc_from_cpu_model(const S390CPUModel
*model
)
87 if (model
->def
->gen
>= S390_GEN_Z10
) {
88 ibc
= ((model
->def
->gen
- S390_GEN_Z10
) << 4) + model
->def
->ec_ga
;
92 void s390_get_feat_block(S390FeatType type
, uint8_t *data
);
93 bool s390_has_feat(S390Feat feat
);
94 uint8_t s390_get_gen_for_cpu_type(uint16_t type
);
95 static inline bool s390_known_cpu_type(uint16_t type
)
97 return s390_get_gen_for_cpu_type(type
) != 0;
99 #define CPU_ID_SHIFT 32
100 #define CPU_ID_BITS 24
102 * When cpu_id_format is 0 (basic mode), the leftmost 4 bits of cpu_id contain
103 * the rightmost 4 bits of the physical CPU address.
105 #define CPU_PHYS_ADDR_BITS 4
106 #define CPU_PHYS_ADDR_SHIFT (CPU_ID_SHIFT + CPU_ID_BITS - CPU_PHYS_ADDR_BITS)
107 static inline uint64_t s390_cpuid_from_cpu_model(const S390CPUModel
*model
)
109 return ((uint64_t)model
->cpu_ver
<< 56) |
110 ((uint64_t)model
->cpu_id
<< CPU_ID_SHIFT
) |
111 ((uint64_t)model
->def
->type
<< 16) |
112 (model
->def
->gen
== 7 ? 0 : (uint64_t)model
->cpu_id_format
<< 15);
114 S390CPUDef
const *s390_find_cpu_def(uint16_t type
, uint8_t gen
, uint8_t ec_ga
,
115 S390FeatBitmap features
);
117 bool kvm_s390_cpu_models_supported(void);
118 bool kvm_s390_get_host_cpu_model(S390CPUModel
*model
, Error
**errp
);
119 bool kvm_s390_apply_cpu_model(const S390CPUModel
*model
, Error
**errp
);
121 #endif /* TARGET_S390X_CPU_MODELS_H */