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 #define S390_GEN_Z10 0xa
  53
  54 uint32_t s390_get_hmfai(void);
  55 uint8_t s390_get_mha_pow(void);
  56 uint32_t s390_get_ibc_val(void);
  57 static inline uint16_t s390_ibc_from_cpu_model(const S390CPUModel *model)
  58 {
  59     uint16_t ibc = 0;
  60
  61     if (model->def->gen >= S390_GEN_Z10) {
  62         ibc = ((model->def->gen - S390_GEN_Z10) << 4) + model->def->ec_ga;
  63     }
  64     return ibc;
  65 }
  66 void s390_get_feat_block(S390FeatType type, uint8_t *data);
  67 bool s390_has_feat(S390Feat feat);
  68
  69 #endif /* TARGET_S390X_CPU_MODELS_H */