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 typedef struct S390StAttribClass S390StAttribClass;
24 typedef struct S390StAttribState S390StAttribState;
25 DECLARE_OBJ_CHECKERS(S390StAttribState, S390StAttribClass,
26                      S390_STATTRIB, TYPE_S390_STATTRIB)
27 
28 struct S390StAttribState {
29     DeviceState parent_obj;
30     uint64_t migration_cur_gfn;
31     bool migration_enabled;
32 };
33 
34 
35 struct S390StAttribClass {
36     DeviceClass parent_class;
37     /* Return value: < 0 on error, or new count */
38     int (*get_stattr)(S390StAttribState *sa, uint64_t *start_gfn,
39                       uint32_t count, uint8_t *values);
40     int (*peek_stattr)(S390StAttribState *sa, uint64_t start_gfn,
41                        uint32_t count, uint8_t *values);
42     int (*set_stattr)(S390StAttribState *sa, uint64_t start_gfn,
43                       uint32_t count, uint8_t *values);
44     void (*synchronize)(S390StAttribState *sa);
45     int (*set_migrationmode)(S390StAttribState *sa, bool value);
46     int (*get_active)(S390StAttribState *sa);
47     long long (*get_dirtycount)(S390StAttribState *sa);
48 };
49 
50 typedef struct QEMUS390StAttribState QEMUS390StAttribState;
51 DECLARE_INSTANCE_CHECKER(QEMUS390StAttribState, QEMU_S390_STATTRIB,
52                          TYPE_QEMU_S390_STATTRIB)
53 
54 struct QEMUS390StAttribState {
55     S390StAttribState parent_obj;
56 };
57 
58 typedef struct KVMS390StAttribState KVMS390StAttribState;
59 DECLARE_INSTANCE_CHECKER(KVMS390StAttribState, KVM_S390_STATTRIB,
60                          TYPE_KVM_S390_STATTRIB)
61 
62 struct KVMS390StAttribState {
63     S390StAttribState parent_obj;
64     uint64_t still_dirty;
65     uint8_t *incoming_buffer;
66 };
67 
68 void s390_stattrib_init(void);
69 
70 #ifdef CONFIG_KVM
71 Object *kvm_s390_stattrib_create(void);
72 #else
73 static inline Object *kvm_s390_stattrib_create(void)
74 {
75     return NULL;
76 }
77 #endif
78 
79 void hmp_info_cmma(Monitor *mon, const QDict *qdict);
80 void hmp_migrationmode(Monitor *mon, const QDict *qdict);
81 
82 #endif /* S390_STORAGE_ATTRIBUTES_H */
83