include/hw/s390x/storage-attributes.h

   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 */