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1 /*
2 * s390 storage attributes device
3 *
4 * Copyright 2016 IBM Corp.
5 * Author(s): Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
6 *
7 * This work is licensed under the terms of the GNU GPL, version 2 or (at
8 * your option) any later version. See the COPYING file in the top-level
9 * directory.
10 */
11
12 #ifndef S390_STORAGE_ATTRIBUTES_H
13 #define S390_STORAGE_ATTRIBUTES_H
14
15 #include "hw/core/qdev.h"
16 #include "qom/object.h"
17
18 #define TYPE_S390_STATTRIB "s390-storage_attributes"
19 #define TYPE_QEMU_S390_STATTRIB "s390-storage_attributes-qemu"
20 #define TYPE_KVM_S390_STATTRIB "s390-storage_attributes-kvm"
21
22 OBJECT_DECLARE_TYPE(S390StAttribState, S390StAttribClass, S390_STATTRIB)
23
24 struct S390StAttribState {
25 DeviceState parent_obj;
26 uint64_t migration_cur_gfn;
27 };
28
29
30 struct S390StAttribClass {
31 DeviceClass parent_class;
32 /* Return value: < 0 on error, or new count */
33 int (*get_stattr)(S390StAttribState *sa, uint64_t *start_gfn,
34 uint32_t count, uint8_t *values);
35 int (*peek_stattr)(S390StAttribState *sa, uint64_t start_gfn,
36 uint32_t count, uint8_t *values);
37 int (*set_stattr)(S390StAttribState *sa, uint64_t start_gfn,
38 uint32_t count, uint8_t *values);
39 void (*synchronize)(S390StAttribState *sa);
40 int (*set_migrationmode)(S390StAttribState *sa, bool value, Error **errp);
41 int (*get_active)(S390StAttribState *sa);
42 long long (*get_dirtycount)(S390StAttribState *sa);
43 };
44
45 typedef struct QEMUS390StAttribState QEMUS390StAttribState;
46 DECLARE_INSTANCE_CHECKER(QEMUS390StAttribState, QEMU_S390_STATTRIB,
47 TYPE_QEMU_S390_STATTRIB)
48
49 struct QEMUS390StAttribState {
50 S390StAttribState parent_obj;
51 };
52
53 typedef struct KVMS390StAttribState KVMS390StAttribState;
54 DECLARE_INSTANCE_CHECKER(KVMS390StAttribState, KVM_S390_STATTRIB,
55 TYPE_KVM_S390_STATTRIB)
56
57 struct KVMS390StAttribState {
58 S390StAttribState parent_obj;
59 uint64_t still_dirty;
60 uint8_t *incoming_buffer;
61 };
62
63 void s390_stattrib_init(void);
64
65 #ifdef CONFIG_KVM
66 Object *kvm_s390_stattrib_create(void);
67 #else
68 static inline Object *kvm_s390_stattrib_create(void)
69 {
70 return NULL;
71 }
72 #endif
73
74 #endif /* S390_STORAGE_ATTRIBUTES_H */