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/qdev-core.h"
16 #include "monitor/monitor.h"
17 #include "qom/object.h"
18 
19 #define TYPE_S390_STATTRIB "s390-storage_attributes"
20 #define TYPE_QEMU_S390_STATTRIB "s390-storage_attributes-qemu"
21 #define TYPE_KVM_S390_STATTRIB "s390-storage_attributes-kvm"
22 
23 OBJECT_DECLARE_TYPE(S390StAttribState, S390StAttribClass, S390_STATTRIB)
24 
25 struct S390StAttribState {
26     DeviceState parent_obj;
27     uint64_t migration_cur_gfn;
28     bool migration_enabled;
29 };
30 
31 
32 struct S390StAttribClass {
33     DeviceClass parent_class;
34     /* Return value: < 0 on error, or new count */
35     int (*get_stattr)(S390StAttribState *sa, uint64_t *start_gfn,
36                       uint32_t count, uint8_t *values);
37     int (*peek_stattr)(S390StAttribState *sa, uint64_t start_gfn,
38                        uint32_t count, uint8_t *values);
39     int (*set_stattr)(S390StAttribState *sa, uint64_t start_gfn,
40                       uint32_t count, uint8_t *values);
41     void (*synchronize)(S390StAttribState *sa);
42     int (*set_migrationmode)(S390StAttribState *sa, bool value, Error **errp);
43     int (*get_active)(S390StAttribState *sa);
44     long long (*get_dirtycount)(S390StAttribState *sa);
45 };
46 
47 typedef struct QEMUS390StAttribState QEMUS390StAttribState;
48 DECLARE_INSTANCE_CHECKER(QEMUS390StAttribState, QEMU_S390_STATTRIB,
49                          TYPE_QEMU_S390_STATTRIB)
50 
51 struct QEMUS390StAttribState {
52     S390StAttribState parent_obj;
53 };
54 
55 typedef struct KVMS390StAttribState KVMS390StAttribState;
56 DECLARE_INSTANCE_CHECKER(KVMS390StAttribState, KVM_S390_STATTRIB,
57                          TYPE_KVM_S390_STATTRIB)
58 
59 struct KVMS390StAttribState {
60     S390StAttribState parent_obj;
61     uint64_t still_dirty;
62     uint8_t *incoming_buffer;
63 };
64 
65 void s390_stattrib_init(void);
66 
67 #ifdef CONFIG_KVM
68 Object *kvm_s390_stattrib_create(void);
69 #else
70 static inline Object *kvm_s390_stattrib_create(void)
71 {
72     return NULL;
73 }
74 #endif
75 
76 void hmp_info_cmma(Monitor *mon, const QDict *qdict);
77 void hmp_migrationmode(Monitor *mon, const QDict *qdict);
78 
79 #endif /* S390_STORAGE_ATTRIBUTES_H */
80