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_CPU,
28 S390_FEAT_TYPE_MISC,
29 S390_FEAT_TYPE_PLO,
30 S390_FEAT_TYPE_PTFF,
31 S390_FEAT_TYPE_KMAC,
32 S390_FEAT_TYPE_KMC,
33 S390_FEAT_TYPE_KM,
34 S390_FEAT_TYPE_KIMD,
35 S390_FEAT_TYPE_KLMD,
36 S390_FEAT_TYPE_PCKMO,
37 S390_FEAT_TYPE_KMCTR,
38 S390_FEAT_TYPE_KMF,
39 S390_FEAT_TYPE_KMO,
40 S390_FEAT_TYPE_PCC,
41 S390_FEAT_TYPE_PPNO,
42 S390_FEAT_TYPE_KMA,
43 S390_FEAT_TYPE_KDSA,
44 S390_FEAT_TYPE_SORTL,
45 S390_FEAT_TYPE_DFLTCC,
46 S390_FEAT_TYPE_UV_FEAT_GUEST,
47 } S390FeatType;
48
49 /* Definition of a CPU feature */
50 typedef struct {
51 const char *name; /* name exposed to the user */
52 const char *desc; /* description exposed to the user */
53 S390FeatType type; /* feature type (way of indication)*/
54 int bit; /* bit within the feature type area (fixed) */
55 } S390FeatDef;
56
57 /* use ordinary bitmap operations to work with features */
58 typedef unsigned long S390FeatBitmap[BITS_TO_LONGS(S390_FEAT_MAX)];
59
60 /* 64bit based bitmap used to init S390FeatBitmap from generated data */
61 typedef uint64_t S390FeatInit[S390_FEAT_MAX / 64 + 1];
62
63 const S390FeatDef *s390_feat_def(S390Feat feat);
64 S390Feat s390_feat_by_type_and_bit(S390FeatType type, int bit);
65 void s390_init_feat_bitmap(const S390FeatInit init, S390FeatBitmap bitmap);
66 void s390_fill_feat_block(const S390FeatBitmap features, S390FeatType type,
67 uint8_t *data);
68 void s390_add_from_feat_block(S390FeatBitmap features, S390FeatType type,
69 uint8_t *data);
70 void s390_feat_bitmap_to_ascii(const S390FeatBitmap features, void *opaque,
71 void (*fn)(const char *name, void *opaque));
72 void s390_get_deprecated_features(S390FeatBitmap features);
73
74 /* Definition of a CPU feature group */
75 typedef struct {
76 const char *name; /* name exposed to the user */
77 const char *desc; /* description exposed to the user */
78 S390FeatBitmap feat; /* features contained in the group */
79 S390FeatInit init; /* used to init feat from generated data */
80 } S390FeatGroupDef;
81
82 const S390FeatGroupDef *s390_feat_group_def(S390FeatGroup group);
83
84 #define BE_BIT_NR(BIT) (BIT ^ (BITS_PER_LONG - 1))
85
clear_be_bit(unsigned int bit_nr,uint8_t * array)86 static inline void clear_be_bit(unsigned int bit_nr, uint8_t *array)
87 {
88 array[bit_nr / 8] &= ~(0x80 >> (bit_nr % 8));
89 }
set_be_bit(unsigned int bit_nr,uint8_t * array)90 static inline void set_be_bit(unsigned int bit_nr, uint8_t *array)
91 {
92 array[bit_nr / 8] |= 0x80 >> (bit_nr % 8);
93 }
test_be_bit(unsigned int bit_nr,const uint8_t * array)94 static inline bool test_be_bit(unsigned int bit_nr, const uint8_t *array)
95 {
96 return array[bit_nr / 8] & (0x80 >> (bit_nr % 8));
97 }
98 #endif /* TARGET_S390X_CPU_FEATURES_H */
99