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1 /*
2 * CPU features/facilities helper structs and utility functions for s390
3 *
4 * Copyright 2016 IBM Corp.
5 *
6 * Author(s): Michael Mueller <mimu@linux.vnet.ibm.com>
7 * David Hildenbrand <dahi@linux.vnet.ibm.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or (at
10 * your option) any later version. See the COPYING file in the top-level
11 * directory.
12 */
13
14 #ifndef TARGET_S390X_CPU_FEATURES_H
15 #define TARGET_S390X_CPU_FEATURES_H
16
17 #include "qemu/bitmap.h"
18 #include "cpu_features_def.h"
19 #include "target/s390x/gen-features.h"
20
21 /* CPU features are announced via different ways */
22 typedef enum {
23 S390_FEAT_TYPE_STFL,
24 S390_FEAT_TYPE_SCLP_CONF_CHAR,
25 S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT,
26 S390_FEAT_TYPE_SCLP_FAC134,
27 S390_FEAT_TYPE_SCLP_FAC_IPL,
28 S390_FEAT_TYPE_SCLP_FAC139,
29 S390_FEAT_TYPE_SCLP_CPU,
30 S390_FEAT_TYPE_MISC,
31 S390_FEAT_TYPE_PLO,
32 S390_FEAT_TYPE_PTFF,
33 S390_FEAT_TYPE_KMAC,
34 S390_FEAT_TYPE_KMC,
35 S390_FEAT_TYPE_KM,
36 S390_FEAT_TYPE_KIMD,
37 S390_FEAT_TYPE_KLMD,
38 S390_FEAT_TYPE_PCKMO,
39 S390_FEAT_TYPE_KMCTR,
40 S390_FEAT_TYPE_KMF,
41 S390_FEAT_TYPE_KMO,
42 S390_FEAT_TYPE_PCC,
43 S390_FEAT_TYPE_PPNO,
44 S390_FEAT_TYPE_KMA,
45 S390_FEAT_TYPE_KDSA,
46 S390_FEAT_TYPE_SORTL,
47 S390_FEAT_TYPE_DFLTCC,
48 S390_FEAT_TYPE_UV_FEAT_GUEST,
49 S390_FEAT_TYPE_PFCR,
50 } S390FeatType;
51
52 /* Definition of a CPU feature */
53 typedef struct {
54 const char *name; /* name exposed to the user */
55 const char *desc; /* description exposed to the user */
56 S390FeatType type; /* feature type (way of indication)*/
57 int bit; /* bit within the feature type area (fixed) */
58 } S390FeatDef;
59
60 /* use ordinary bitmap operations to work with features */
61 typedef unsigned long S390FeatBitmap[BITS_TO_LONGS(S390_FEAT_MAX)];
62
63 /* 64bit based bitmap used to init S390FeatBitmap from generated data */
64 typedef uint64_t S390FeatInit[S390_FEAT_MAX / 64 + 1];
65
66 const S390FeatDef *s390_feat_def(S390Feat feat);
67 S390Feat s390_feat_by_type_and_bit(S390FeatType type, int bit);
68 void s390_init_feat_bitmap(const S390FeatInit init, S390FeatBitmap bitmap);
69 void s390_fill_feat_block(const S390FeatBitmap features, S390FeatType type,
70 uint8_t *data);
71 void s390_add_from_feat_block(S390FeatBitmap features, S390FeatType type,
72 uint8_t *data);
73 void s390_feat_bitmap_to_ascii(const S390FeatBitmap features, void *opaque,
74 void (*fn)(const char *name, void *opaque));
75 void s390_get_deprecated_features(S390FeatBitmap features);
76
77 /* Definition of a CPU feature group */
78 typedef struct {
79 const char *name; /* name exposed to the user */
80 const char *desc; /* description exposed to the user */
81 S390FeatBitmap feat; /* features contained in the group */
82 S390FeatInit init; /* used to init feat from generated data */
83 } S390FeatGroupDef;
84
85 const S390FeatGroupDef *s390_feat_group_def(S390FeatGroup group);
86
87 #define BE_BIT_NR(BIT) (BIT ^ (BITS_PER_LONG - 1))
88
89 static inline void clear_be_bit(unsigned int bit_nr, uint8_t *array)
90 {
91 array[bit_nr / 8] &= ~(0x80 >> (bit_nr % 8));
92 }
93 static inline void set_be_bit(unsigned int bit_nr, uint8_t *array)
94 {
95 array[bit_nr / 8] |= 0x80 >> (bit_nr % 8);
96 }
97 static inline bool test_be_bit(unsigned int bit_nr, const uint8_t *array)
98 {
99 return array[bit_nr / 8] & (0x80 >> (bit_nr % 8));
100 }
101 #endif /* TARGET_S390X_CPU_FEATURES_H */