2 * QEMU S390x floating interrupt controller (flic)
4 * Copyright 2014 IBM Corp.
5 * Author(s): Jens Freimann <jfrei@linux.vnet.ibm.com>
6 * Cornelia Huck <cornelia.huck@de.ibm.com>
8 * This work is licensed under the terms of the GNU GPL, version 2 or (at
9 * your option) any later version. See the COPYING file in the top-level
13 #ifndef HW_S390_FLIC_H
14 #define HW_S390_FLIC_H
16 #include "hw/sysbus.h"
17 #include "hw/s390x/adapter.h"
18 #include "hw/virtio/virtio.h"
19 #include "qemu/queue.h"
20 #include "qom/object.h"
23 * Reserve enough gsis to accommodate all virtio devices.
24 * If any other user of adapter routes needs more of these,
25 * we need to bump the value; but virtio looks like the
28 #define ADAPTER_ROUTES_MAX_GSI VIRTIO_QUEUE_MAX
30 typedef struct AdapterRoutes
{
33 int gsi
[ADAPTER_ROUTES_MAX_GSI
];
36 extern const VMStateDescription vmstate_adapter_routes
;
38 #define TYPE_S390_FLIC_COMMON "s390-flic"
39 OBJECT_DECLARE_TYPE(S390FLICState
, S390FLICStateClass
,
42 struct S390FLICState
{
43 SysBusDevice parent_obj
;
44 /* to limit AdapterRoutes.num_routes for compat */
45 uint32_t adapter_routes_max_batch
;
47 bool migration_enabled
;
51 struct S390FLICStateClass
{
52 DeviceClass parent_class
;
54 int (*register_io_adapter
)(S390FLICState
*fs
, uint32_t id
, uint8_t isc
,
55 bool swap
, bool maskable
, uint8_t flags
);
56 int (*io_adapter_map
)(S390FLICState
*fs
, uint32_t id
, uint64_t map_addr
,
58 int (*add_adapter_routes
)(S390FLICState
*fs
, AdapterRoutes
*routes
);
59 void (*release_adapter_routes
)(S390FLICState
*fs
, AdapterRoutes
*routes
);
60 int (*clear_io_irq
)(S390FLICState
*fs
, uint16_t subchannel_id
,
61 uint16_t subchannel_nr
);
62 int (*modify_ais_mode
)(S390FLICState
*fs
, uint8_t isc
, uint16_t mode
);
63 int (*inject_airq
)(S390FLICState
*fs
, uint8_t type
, uint8_t isc
,
65 void (*inject_service
)(S390FLICState
*fs
, uint32_t parm
);
66 void (*inject_io
)(S390FLICState
*fs
, uint16_t subchannel_id
,
67 uint16_t subchannel_nr
, uint32_t io_int_parm
,
68 uint32_t io_int_word
);
69 void (*inject_crw_mchk
)(S390FLICState
*fs
);
72 #define TYPE_KVM_S390_FLIC "s390-flic-kvm"
73 typedef struct KVMS390FLICState KVMS390FLICState
;
74 DECLARE_INSTANCE_CHECKER(KVMS390FLICState
, KVM_S390_FLIC
,
77 #define TYPE_QEMU_S390_FLIC "s390-flic-qemu"
78 OBJECT_DECLARE_SIMPLE_TYPE(QEMUS390FLICState
, QEMU_S390_FLIC
)
80 #define SIC_IRQ_MODE_ALL 0
81 #define SIC_IRQ_MODE_SINGLE 1
82 #define AIS_MODE_MASK(isc) (0x80 >> isc)
84 #define ISC_TO_PENDING_IO(_isc) (0x80 >> (_isc))
85 #define CR6_TO_PENDING_IO(_cr6) (((_cr6) >> 24) & 0xff)
87 /* organize the ISC bits so that the macros above work */
88 #define FLIC_PENDING_IO_ISC7 (1 << 0)
89 #define FLIC_PENDING_IO_ISC6 (1 << 1)
90 #define FLIC_PENDING_IO_ISC5 (1 << 2)
91 #define FLIC_PENDING_IO_ISC4 (1 << 3)
92 #define FLIC_PENDING_IO_ISC3 (1 << 4)
93 #define FLIC_PENDING_IO_ISC2 (1 << 5)
94 #define FLIC_PENDING_IO_ISC1 (1 << 6)
95 #define FLIC_PENDING_IO_ISC0 (1 << 7)
96 #define FLIC_PENDING_SERVICE (1 << 8)
97 #define FLIC_PENDING_MCHK_CR (1 << 9)
99 #define FLIC_PENDING_IO (FLIC_PENDING_IO_ISC0 | FLIC_PENDING_IO_ISC1 | \
100 FLIC_PENDING_IO_ISC2 | FLIC_PENDING_IO_ISC3 | \
101 FLIC_PENDING_IO_ISC4 | FLIC_PENDING_IO_ISC5 | \
102 FLIC_PENDING_IO_ISC6 | FLIC_PENDING_IO_ISC7)
104 typedef struct QEMUS390FlicIO
{
109 QLIST_ENTRY(QEMUS390FlicIO
) next
;
112 struct QEMUS390FLICState
{
113 S390FLICState parent_obj
;
115 uint32_t service_param
;
118 QLIST_HEAD(, QEMUS390FlicIO
) io
[8];
119 bool migrate_all_state
;
122 uint32_t qemu_s390_flic_dequeue_service(QEMUS390FLICState
*flic
);
123 QEMUS390FlicIO
*qemu_s390_flic_dequeue_io(QEMUS390FLICState
*flic
,
125 void qemu_s390_flic_dequeue_crw_mchk(QEMUS390FLICState
*flic
);
126 bool qemu_s390_flic_has_service(QEMUS390FLICState
*flic
);
127 bool qemu_s390_flic_has_io(QEMUS390FLICState
*fs
, uint64_t cr6
);
128 bool qemu_s390_flic_has_crw_mchk(QEMUS390FLICState
*flic
);
129 bool qemu_s390_flic_has_any(QEMUS390FLICState
*flic
);
131 void s390_flic_init(void);
133 S390FLICState
*s390_get_flic(void);
134 QEMUS390FLICState
*s390_get_qemu_flic(S390FLICState
*fs
);
135 S390FLICStateClass
*s390_get_flic_class(S390FLICState
*fs
);
136 void s390_crw_mchk(void);
137 void s390_io_interrupt(uint16_t subchannel_id
, uint16_t subchannel_nr
,
138 uint32_t io_int_parm
, uint32_t io_int_word
);
139 bool ais_needed(void *opaque
);
141 #endif /* HW_S390_FLIC_H */