block: implement the bdrv_reopen_prepare helper for LUKS driver
[qemu/ar7.git] / target / s390x / cpu_features.h
blobe306aa7ab2ac0b1f4287326906a97bb8334211a1
1 /*
2 * CPU features/facilities helper structs and utility functions for s390
4 * Copyright 2016 IBM Corp.
6 * Author(s): Michael Mueller <mimu@linux.vnet.ibm.com>
7 * David Hildenbrand <dahi@linux.vnet.ibm.com>
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.
14 #ifndef TARGET_S390X_CPU_FEATURES_H
15 #define TARGET_S390X_CPU_FEATURES_H
17 #include "qemu/bitmap.h"
18 #include "cpu_features_def.h"
20 /* CPU features are announced via different ways */
21 typedef enum {
22 S390_FEAT_TYPE_STFL,
23 S390_FEAT_TYPE_SCLP_CONF_CHAR,
24 S390_FEAT_TYPE_SCLP_CONF_CHAR_EXT,
25 S390_FEAT_TYPE_SCLP_CPU,
26 S390_FEAT_TYPE_MISC,
27 S390_FEAT_TYPE_PLO,
28 S390_FEAT_TYPE_PTFF,
29 S390_FEAT_TYPE_KMAC,
30 S390_FEAT_TYPE_KMC,
31 S390_FEAT_TYPE_KM,
32 S390_FEAT_TYPE_KIMD,
33 S390_FEAT_TYPE_KLMD,
34 S390_FEAT_TYPE_PCKMO,
35 S390_FEAT_TYPE_KMCTR,
36 S390_FEAT_TYPE_KMF,
37 S390_FEAT_TYPE_KMO,
38 S390_FEAT_TYPE_PCC,
39 S390_FEAT_TYPE_PPNO,
40 S390_FEAT_TYPE_KMA,
41 } S390FeatType;
43 /* Definition of a CPU feature */
44 typedef struct {
45 const char *name; /* name exposed to the user */
46 const char *desc; /* description exposed to the user */
47 S390FeatType type; /* feature type (way of indication)*/
48 int bit; /* bit within the feature type area (fixed) */
49 } S390FeatDef;
51 /* use ordinary bitmap operations to work with features */
52 typedef unsigned long S390FeatBitmap[BITS_TO_LONGS(S390_FEAT_MAX)];
54 /* 64bit based bitmap used to init S390FeatBitmap from generated data */
55 typedef uint64_t S390FeatInit[S390_FEAT_MAX / 64 + 1];
57 const S390FeatDef *s390_feat_def(S390Feat feat);
58 S390Feat s390_feat_by_type_and_bit(S390FeatType type, int bit);
59 void s390_init_feat_bitmap(const S390FeatInit init, S390FeatBitmap bitmap);
60 void s390_fill_feat_block(const S390FeatBitmap features, S390FeatType type,
61 uint8_t *data);
62 void s390_add_from_feat_block(S390FeatBitmap features, S390FeatType type,
63 uint8_t *data);
64 void s390_feat_bitmap_to_ascii(const S390FeatBitmap features, void *opaque,
65 void (*fn)(const char *name, void *opaque));
67 /* static groups that will never change */
68 typedef enum {
69 S390_FEAT_GROUP_PLO,
70 S390_FEAT_GROUP_TOD_CLOCK_STEERING,
71 S390_FEAT_GROUP_GEN13_PTFF_ENH,
72 S390_FEAT_GROUP_MSA,
73 S390_FEAT_GROUP_MSA_EXT_1,
74 S390_FEAT_GROUP_MSA_EXT_2,
75 S390_FEAT_GROUP_MSA_EXT_3,
76 S390_FEAT_GROUP_MSA_EXT_4,
77 S390_FEAT_GROUP_MSA_EXT_5,
78 S390_FEAT_GROUP_MSA_EXT_6,
79 S390_FEAT_GROUP_MSA_EXT_7,
80 S390_FEAT_GROUP_MSA_EXT_8,
81 S390_FEAT_GROUP_MAX,
82 } S390FeatGroup;
84 /* Definition of a CPU feature group */
85 typedef struct {
86 const char *name; /* name exposed to the user */
87 const char *desc; /* description exposed to the user */
88 S390FeatBitmap feat; /* features contained in the group */
89 S390FeatInit init; /* used to init feat from generated data */
90 } S390FeatGroupDef;
92 const S390FeatGroupDef *s390_feat_group_def(S390FeatGroup group);
94 #define BE_BIT_NR(BIT) (BIT ^ (BITS_PER_LONG - 1))
96 static inline void set_be_bit(unsigned int bit_nr, uint8_t *array)
98 array[bit_nr / 8] |= 0x80 >> (bit_nr % 8);
100 static inline bool test_be_bit(unsigned int bit_nr, const uint8_t *array)
102 return array[bit_nr / 8] & (0x80 >> (bit_nr % 8));
104 #endif /* TARGET_S390X_CPU_FEATURES_H */