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/*
* CPU features/facilities helper structs and utility functions for s390
*
* Copyright 2016 IBM Corp.
*
* Author(s): Michael Mueller <mimu@linux.vnet.ibm.com>
* David Hildenbrand <dahi@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#ifndef TARGET_S390X_CPU_FEATURES_H
#define TARGET_S390X_CPU_FEATURES_H
#include "qemu/bitmap.h"
#include "cpu_features_def.h"
/* CPU features are announced via different ways */
typedef enum {
S390_FEAT_TYPE_STFL,
S390_FEAT_TYPE_SCLP_CONF_CHAR,
S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT,
S390_FEAT_TYPE_SCLP_CPU,
S390_FEAT_TYPE_MISC,
S390_FEAT_TYPE_PLO,
S390_FEAT_TYPE_PTFF,
S390_FEAT_TYPE_KMAC,
S390_FEAT_TYPE_KMC,
S390_FEAT_TYPE_KM,
S390_FEAT_TYPE_KIMD,
S390_FEAT_TYPE_KLMD,
S390_FEAT_TYPE_PCKMO,
S390_FEAT_TYPE_KMCTR,
S390_FEAT_TYPE_KMF,
S390_FEAT_TYPE_KMO,
S390_FEAT_TYPE_PCC,
S390_FEAT_TYPE_PPNO,
S390_FEAT_TYPE_KMA,
} S390FeatType;
/* Definition of a CPU feature */
typedef struct {
const char *name; /* name exposed to the user */
const char *desc; /* description exposed to the user */
S390FeatType type; /* feature type (way of indication)*/
int bit; /* bit within the feature type area (fixed) */
} S390FeatDef;
/* use ordinary bitmap operations to work with features */
typedef unsigned long S390FeatBitmap[BITS_TO_LONGS(S390_FEAT_MAX)];
/* 64bit based bitmap used to init S390FeatBitmap from generated data */
typedef uint64_t S390FeatInit[S390_FEAT_MAX / 64 + 1];
const S390FeatDef *s390_feat_def(S390Feat feat);
S390Feat s390_feat_by_type_and_bit(S390FeatType type, int bit);
void s390_init_feat_bitmap(const S390FeatInit init, S390FeatBitmap bitmap);
void s390_fill_feat_block(const S390FeatBitmap features, S390FeatType type,
uint8_t *data);
void s390_add_from_feat_block(S390FeatBitmap features, S390FeatType type,
uint8_t *data);
void s390_feat_bitmap_to_ascii(const S390FeatBitmap features, void *opaque,
void (*fn)(const char *name, void *opaque));
/* static groups that will never change */
typedef enum {
S390_FEAT_GROUP_PLO,
S390_FEAT_GROUP_TOD_CLOCK_STEERING,
S390_FEAT_GROUP_GEN13_PTFF_ENH,
S390_FEAT_GROUP_MSA,
S390_FEAT_GROUP_MSA_EXT_1,
S390_FEAT_GROUP_MSA_EXT_2,
S390_FEAT_GROUP_MSA_EXT_3,
S390_FEAT_GROUP_MSA_EXT_4,
S390_FEAT_GROUP_MSA_EXT_5,
S390_FEAT_GROUP_MSA_EXT_6,
S390_FEAT_GROUP_MSA_EXT_7,
S390_FEAT_GROUP_MSA_EXT_8,
S390_FEAT_GROUP_MULTIPLE_EPOCH_PTFF,
S390_FEAT_GROUP_MAX,
} S390FeatGroup;
/* Definition of a CPU feature group */
typedef struct {
const char *name; /* name exposed to the user */
const char *desc; /* description exposed to the user */
S390FeatBitmap feat; /* features contained in the group */
S390FeatInit init; /* used to init feat from generated data */
} S390FeatGroupDef;
const S390FeatGroupDef *s390_feat_group_def(S390FeatGroup group);
#define BE_BIT_NR(BIT) (BIT ^ (BITS_PER_LONG - 1))
static inline void set_be_bit(unsigned int bit_nr, uint8_t *array)
{
array[bit_nr / 8] |= 0x80 >> (bit_nr % 8);
}
static inline bool test_be_bit(unsigned int bit_nr, const uint8_t *array)
{
return array[bit_nr / 8] & (0x80 >> (bit_nr % 8));
}
#endif /* TARGET_S390X_CPU_FEATURES_H */
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