David Hildenbrand | 6c064de | 2016-09-05 10:52:22 +0200 | [diff] [blame] | 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" |
David Hildenbrand | 35b4df6 | 2017-12-08 17:55:29 +0100 | [diff] [blame] | 17 | #include "gen-features.h" |
David Hildenbrand | 6c064de | 2016-09-05 10:52:22 +0200 | [diff] [blame] | 18 | #include "qom/cpu.h" |
| 19 | |
| 20 | /* static CPU definition */ |
David Hildenbrand | ef2974c | 2017-09-13 15:24:02 +0200 | [diff] [blame] | 21 | struct S390CPUDef { |
David Hildenbrand | 6c064de | 2016-09-05 10:52:22 +0200 | [diff] [blame] | 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 Adress 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 | /* deafault 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; |
David Hildenbrand | ef2974c | 2017-09-13 15:24:02 +0200 | [diff] [blame] | 41 | }; |
David Hildenbrand | 6c064de | 2016-09-05 10:52:22 +0200 | [diff] [blame] | 42 | |
David Hildenbrand | ad5afd0 | 2016-09-05 10:52:23 +0200 | [diff] [blame] | 43 | /* CPU model based on a CPU definition */ |
David Hildenbrand | ef2974c | 2017-09-13 15:24:02 +0200 | [diff] [blame] | 44 | struct S390CPUModel { |
David Hildenbrand | ad5afd0 | 2016-09-05 10:52:23 +0200 | [diff] [blame] | 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 */ |
David Hildenbrand | 64bc98f | 2017-05-31 21:34:33 +0200 | [diff] [blame] | 50 | uint8_t cpu_id_format; /* CPU id format bit */ |
David Hildenbrand | ad5afd0 | 2016-09-05 10:52:23 +0200 | [diff] [blame] | 51 | uint8_t cpu_ver; /* CPU version, usually "ff" for kvm */ |
David Hildenbrand | ef2974c | 2017-09-13 15:24:02 +0200 | [diff] [blame] | 52 | }; |
David Hildenbrand | ad5afd0 | 2016-09-05 10:52:23 +0200 | [diff] [blame] | 53 | |
David Hildenbrand | 3b84c25 | 2016-09-05 10:52:35 +0200 | [diff] [blame] | 54 | /* |
| 55 | * CPU ID |
| 56 | * |
| 57 | * bits 0-7: Zeroes (ff for kvm) |
| 58 | * bits 8-31: CPU ID (serial number) |
David Hildenbrand | 64bc98f | 2017-05-31 21:34:33 +0200 | [diff] [blame] | 59 | * bits 32-47: Machine type |
| 60 | * bit 48: CPU ID format |
| 61 | * bits 49-63: Zeroes |
David Hildenbrand | 3b84c25 | 2016-09-05 10:52:35 +0200 | [diff] [blame] | 62 | */ |
| 63 | #define cpuid_type(x) (((x) >> 16) & 0xffff) |
| 64 | #define cpuid_id(x) (((x) >> 32) & 0xffffff) |
| 65 | #define cpuid_ver(x) (((x) >> 56) & 0xff) |
David Hildenbrand | 64bc98f | 2017-05-31 21:34:33 +0200 | [diff] [blame] | 66 | #define cpuid_format(x) (((x) >> 15) & 0x1) |
David Hildenbrand | 3b84c25 | 2016-09-05 10:52:35 +0200 | [diff] [blame] | 67 | |
| 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) |
| 71 | |
David Hildenbrand | 059be52 | 2016-09-05 10:52:30 +0200 | [diff] [blame] | 72 | #define S390_GEN_Z10 0xa |
David Hildenbrand | 3b84c25 | 2016-09-05 10:52:35 +0200 | [diff] [blame] | 73 | #define ibc_gen(x) (x == 0 ? 0 : ((x >> 4) + S390_GEN_Z10)) |
| 74 | #define ibc_ec_ga(x) (x & 0xf) |
David Hildenbrand | 059be52 | 2016-09-05 10:52:30 +0200 | [diff] [blame] | 75 | |
Jason J. Herne | c9ad8a7 | 2017-04-10 09:39:00 -0400 | [diff] [blame] | 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); |
Collin Walling | 84176c7 | 2019-02-11 20:16:56 -0500 | [diff] [blame] | 78 | void s390_cpudef_group_featoff_greater(uint8_t gen, uint8_t ec_ga, |
| 79 | S390FeatGroup group); |
David Hildenbrand | a366930 | 2016-09-05 10:52:32 +0200 | [diff] [blame] | 80 | uint32_t s390_get_hmfai(void); |
David Hildenbrand | 3fad325 | 2016-09-05 10:52:31 +0200 | [diff] [blame] | 81 | uint8_t s390_get_mha_pow(void); |
David Hildenbrand | 059be52 | 2016-09-05 10:52:30 +0200 | [diff] [blame] | 82 | uint32_t s390_get_ibc_val(void); |
| 83 | static inline uint16_t s390_ibc_from_cpu_model(const S390CPUModel *model) |
| 84 | { |
| 85 | uint16_t ibc = 0; |
| 86 | |
| 87 | if (model->def->gen >= S390_GEN_Z10) { |
| 88 | ibc = ((model->def->gen - S390_GEN_Z10) << 4) + model->def->ec_ga; |
| 89 | } |
| 90 | return ibc; |
| 91 | } |
David Hildenbrand | 4dd4200 | 2016-09-05 10:52:29 +0200 | [diff] [blame] | 92 | void s390_get_feat_block(S390FeatType type, uint8_t *data); |
David Hildenbrand | 7c72ac4 | 2016-09-05 10:52:25 +0200 | [diff] [blame] | 93 | bool s390_has_feat(S390Feat feat); |
David Hildenbrand | 3b84c25 | 2016-09-05 10:52:35 +0200 | [diff] [blame] | 94 | uint8_t s390_get_gen_for_cpu_type(uint16_t type); |
| 95 | static inline bool s390_known_cpu_type(uint16_t type) |
| 96 | { |
| 97 | return s390_get_gen_for_cpu_type(type) != 0; |
| 98 | } |
| 99 | static inline uint64_t s390_cpuid_from_cpu_model(const S390CPUModel *model) |
| 100 | { |
| 101 | return ((uint64_t)model->cpu_ver << 56) | |
| 102 | ((uint64_t)model->cpu_id << 32) | |
David Hildenbrand | 64bc98f | 2017-05-31 21:34:33 +0200 | [diff] [blame] | 103 | ((uint64_t)model->def->type << 16) | |
| 104 | (model->def->gen == 7 ? 0 : (uint64_t)model->cpu_id_format << 15); |
David Hildenbrand | 3b84c25 | 2016-09-05 10:52:35 +0200 | [diff] [blame] | 105 | } |
| 106 | S390CPUDef const *s390_find_cpu_def(uint16_t type, uint8_t gen, uint8_t ec_ga, |
| 107 | S390FeatBitmap features); |
| 108 | |
| 109 | #ifdef CONFIG_KVM |
| 110 | bool kvm_s390_cpu_models_supported(void); |
| 111 | void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp); |
| 112 | void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp); |
| 113 | #else |
| 114 | static inline void kvm_s390_get_host_cpu_model(S390CPUModel *model, |
| 115 | Error **errp) |
| 116 | { |
| 117 | } |
| 118 | static inline void kvm_s390_apply_cpu_model(const S390CPUModel *model, |
| 119 | Error **errp) |
| 120 | { |
| 121 | } |
| 122 | static inline bool kvm_s390_cpu_models_supported(void) |
| 123 | { |
| 124 | return false; |
| 125 | } |
| 126 | #endif |
David Hildenbrand | 7c72ac4 | 2016-09-05 10:52:25 +0200 | [diff] [blame] | 127 | |
David Hildenbrand | 6c064de | 2016-09-05 10:52:22 +0200 | [diff] [blame] | 128 | #endif /* TARGET_S390X_CPU_MODELS_H */ |