hw/arm/virt: Merge VirtBoardInfo and VirtMachineState
[qemu.git] / target / s390x / cpu_models.h
1 /*
2 * CPU models for s390x
3 *
4 * Copyright 2016 IBM Corp.
5 *
6 * Author(s): David Hildenbrand <dahi@linux.vnet.ibm.com>
7 *
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
10 * directory.
11 */
12
13 #ifndef TARGET_S390X_CPU_MODELS_H
14 #define TARGET_S390X_CPU_MODELS_H
15
16 #include "cpu_features.h"
17 #include "qom/cpu.h"
18
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;
40 } S390CPUDef;
41
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 */
50 } S390CPUModel;
51
52 /*
53 * CPU ID
54 *
55 * bits 0-7: Zeroes (ff for kvm)
56 * bits 8-31: CPU ID (serial number)
57 * bits 32-48: Machine type
58 * bits 48-63: Zeroes
59 */
60 #define cpuid_type(x) (((x) >> 16) & 0xffff)
61 #define cpuid_id(x) (((x) >> 32) & 0xffffff)
62 #define cpuid_ver(x) (((x) >> 56) & 0xff)
63
64 #define lowest_ibc(x) (((uint32_t)(x) >> 16) & 0xfff)
65 #define unblocked_ibc(x) ((uint32_t)(x) & 0xfff)
66 #define has_ibc(x) (lowest_ibc(x) != 0)
67
68 #define S390_GEN_Z10 0xa
69 #define ibc_gen(x) (x == 0 ? 0 : ((x >> 4) + S390_GEN_Z10))
70 #define ibc_ec_ga(x) (x & 0xf)
71
72 uint32_t s390_get_hmfai(void);
73 uint8_t s390_get_mha_pow(void);
74 uint32_t s390_get_ibc_val(void);
75 static inline uint16_t s390_ibc_from_cpu_model(const S390CPUModel *model)
76 {
77 uint16_t ibc = 0;
78
79 if (model->def->gen >= S390_GEN_Z10) {
80 ibc = ((model->def->gen - S390_GEN_Z10) << 4) + model->def->ec_ga;
81 }
82 return ibc;
83 }
84 void s390_get_feat_block(S390FeatType type, uint8_t *data);
85 bool s390_has_feat(S390Feat feat);
86 uint8_t s390_get_gen_for_cpu_type(uint16_t type);
87 static inline bool s390_known_cpu_type(uint16_t type)
88 {
89 return s390_get_gen_for_cpu_type(type) != 0;
90 }
91 static inline uint64_t s390_cpuid_from_cpu_model(const S390CPUModel *model)
92 {
93 return ((uint64_t)model->cpu_ver << 56) |
94 ((uint64_t)model->cpu_id << 32) |
95 ((uint64_t)model->def->type << 16);
96 }
97 S390CPUDef const *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga,
98 S390FeatBitmap features);
99
100 #ifdef CONFIG_KVM
101 bool kvm_s390_cpu_models_supported(void);
102 void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp);
103 void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp);
104 #else
105 static inline void kvm_s390_get_host_cpu_model(S390CPUModel *model,
106 Error **errp)
107 {
108 }
109 static inline void kvm_s390_apply_cpu_model(const S390CPUModel *model,
110 Error **errp)
111 {
112 }
113 static inline bool kvm_s390_cpu_models_supported(void)
114 {
115 return false;
116 }
117 #endif
118
119 #endif /* TARGET_S390X_CPU_MODELS_H */