3d1cfc3c68
Using ordinary bitmap operations to set/test bits does not work properly on architectures !s390x. Let's drop (test|set)_bit_inv and introduce (test|set)_be_bit instead. These functions work on uint8_t array, not on unsigned longs arrays and are for now only used in the context of CPU features. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170720123721.12366-4-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
105 lines
3.4 KiB
C
105 lines
3.4 KiB
C
/*
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* CPU features/facilities helper structs and utility functions for s390
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*
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* Copyright 2016 IBM Corp.
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*
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* Author(s): Michael Mueller <mimu@linux.vnet.ibm.com>
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* David Hildenbrand <dahi@linux.vnet.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#ifndef TARGET_S390X_CPU_FEATURES_H
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#define TARGET_S390X_CPU_FEATURES_H
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#include "qemu/bitmap.h"
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#include "cpu_features_def.h"
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/* CPU features are announced via different ways */
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typedef enum {
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S390_FEAT_TYPE_STFL,
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S390_FEAT_TYPE_SCLP_CONF_CHAR,
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S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT,
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S390_FEAT_TYPE_SCLP_CPU,
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S390_FEAT_TYPE_MISC,
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S390_FEAT_TYPE_PLO,
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S390_FEAT_TYPE_PTFF,
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S390_FEAT_TYPE_KMAC,
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S390_FEAT_TYPE_KMC,
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S390_FEAT_TYPE_KM,
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S390_FEAT_TYPE_KIMD,
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S390_FEAT_TYPE_KLMD,
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S390_FEAT_TYPE_PCKMO,
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S390_FEAT_TYPE_KMCTR,
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S390_FEAT_TYPE_KMF,
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S390_FEAT_TYPE_KMO,
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S390_FEAT_TYPE_PCC,
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S390_FEAT_TYPE_PPNO,
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S390_FEAT_TYPE_KMA,
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} S390FeatType;
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/* Definition of a CPU feature */
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typedef struct {
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const char *name; /* name exposed to the user */
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const char *desc; /* description exposed to the user */
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S390FeatType type; /* feature type (way of indication)*/
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int bit; /* bit within the feature type area (fixed) */
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} S390FeatDef;
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/* use ordinary bitmap operations to work with features */
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typedef unsigned long S390FeatBitmap[BITS_TO_LONGS(S390_FEAT_MAX)];
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/* 64bit based bitmap used to init S390FeatBitmap from generated data */
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typedef uint64_t S390FeatInit[S390_FEAT_MAX / 64 + 1];
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const S390FeatDef *s390_feat_def(S390Feat feat);
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S390Feat s390_feat_by_type_and_bit(S390FeatType type, int bit);
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void s390_init_feat_bitmap(const S390FeatInit init, S390FeatBitmap bitmap);
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void s390_fill_feat_block(const S390FeatBitmap features, S390FeatType type,
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uint8_t *data);
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void s390_add_from_feat_block(S390FeatBitmap features, S390FeatType type,
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uint8_t *data);
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void s390_feat_bitmap_to_ascii(const S390FeatBitmap features, void *opaque,
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void (*fn)(const char *name, void *opaque));
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/* static groups that will never change */
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typedef enum {
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S390_FEAT_GROUP_PLO,
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S390_FEAT_GROUP_TOD_CLOCK_STEERING,
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S390_FEAT_GROUP_GEN13_PTFF_ENH,
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S390_FEAT_GROUP_MSA,
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S390_FEAT_GROUP_MSA_EXT_1,
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S390_FEAT_GROUP_MSA_EXT_2,
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S390_FEAT_GROUP_MSA_EXT_3,
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S390_FEAT_GROUP_MSA_EXT_4,
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S390_FEAT_GROUP_MSA_EXT_5,
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S390_FEAT_GROUP_MSA_EXT_6,
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S390_FEAT_GROUP_MSA_EXT_7,
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S390_FEAT_GROUP_MSA_EXT_8,
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S390_FEAT_GROUP_MAX,
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} S390FeatGroup;
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/* Definition of a CPU feature group */
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typedef struct {
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const char *name; /* name exposed to the user */
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const char *desc; /* description exposed to the user */
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S390FeatBitmap feat; /* features contained in the group */
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S390FeatInit init; /* used to init feat from generated data */
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} S390FeatGroupDef;
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const S390FeatGroupDef *s390_feat_group_def(S390FeatGroup group);
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#define BE_BIT_NR(BIT) (BIT ^ (BITS_PER_LONG - 1))
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static inline void set_be_bit(unsigned int bit_nr, uint8_t *array)
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{
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array[bit_nr / 8] |= 0x80 >> (bit_nr % 8);
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}
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static inline bool test_be_bit(unsigned int bit_nr, const uint8_t *array)
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{
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return array[bit_nr / 8] & (0x80 >> (bit_nr % 8));
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}
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#endif /* TARGET_S390X_CPU_FEATURES_H */
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