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 
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 #define S390_STATTRIB(obj) \
23     OBJECT_CHECK(S390StAttribState, (obj), TYPE_S390_STATTRIB)
24 
25 typedef struct S390StAttribState {
26     DeviceState parent_obj;
27     uint64_t migration_cur_gfn;
28     bool migration_enabled;
29 } S390StAttribState;
30 
31 #define S390_STATTRIB_CLASS(klass) \
32     OBJECT_CLASS_CHECK(S390StAttribClass, (klass), TYPE_S390_STATTRIB)
33 #define S390_STATTRIB_GET_CLASS(obj) \
34     OBJECT_GET_CLASS(S390StAttribClass, (obj), TYPE_S390_STATTRIB)
35 
36 typedef struct S390StAttribClass {
37     DeviceClass parent_class;
38     /* Return value: < 0 on error, or new count */
39     int (*get_stattr)(S390StAttribState *sa, uint64_t *start_gfn,
40                       uint32_t count, uint8_t *values);
41     int (*peek_stattr)(S390StAttribState *sa, uint64_t start_gfn,
42                        uint32_t count, uint8_t *values);
43     int (*set_stattr)(S390StAttribState *sa, uint64_t start_gfn,
44                       uint32_t count, uint8_t *values);
45     void (*synchronize)(S390StAttribState *sa);
46     int (*set_migrationmode)(S390StAttribState *sa, bool value);
47     int (*get_active)(S390StAttribState *sa);
48     long long (*get_dirtycount)(S390StAttribState *sa);
49 } S390StAttribClass;
50 
51 #define QEMU_S390_STATTRIB(obj) \
52     OBJECT_CHECK(QEMUS390StAttribState, (obj), TYPE_QEMU_S390_STATTRIB)
53 
54 typedef struct QEMUS390StAttribState {
55     S390StAttribState parent_obj;
56 } QEMUS390StAttribState;
57 
58 #define KVM_S390_STATTRIB(obj) \
59     OBJECT_CHECK(KVMS390StAttribState, (obj), TYPE_KVM_S390_STATTRIB)
60 
61 typedef struct KVMS390StAttribState {
62     S390StAttribState parent_obj;
63     uint64_t still_dirty;
64     uint8_t *incoming_buffer;
65 } KVMS390StAttribState;
66 
67 void s390_stattrib_init(void);
68 
69 #ifdef CONFIG_KVM
70 Object *kvm_s390_stattrib_create(void);
71 #else
72 static inline Object *kvm_s390_stattrib_create(void)
73 {
74     return NULL;
75 }
76 #endif
77 
78 void hmp_info_cmma(Monitor *mon, const QDict *qdict);
79 void hmp_migrationmode(Monitor *mon, const QDict *qdict);
80 
81 #endif /* S390_STORAGE_ATTRIBUTES_H */
82