1 /* 2 * QEMU S390x floating interrupt controller (flic) 3 * 4 * Copyright 2014 IBM Corp. 5 * Author(s): Jens Freimann <jfrei@linux.vnet.ibm.com> 6 * Cornelia Huck <cornelia.huck@de.ibm.com> 7 * 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 10 * directory. 11 */ 12 13 #ifndef HW_S390_FLIC_H 14 #define HW_S390_FLIC_H 15 16 #include "hw/sysbus.h" 17 #include "hw/s390x/adapter.h" 18 #include "hw/virtio/virtio.h" 19 20 /* 21 * Reserve enough gsis to accommodate all virtio devices. 22 * If any other user of adapter routes needs more of these, 23 * we need to bump the value; but virtio looks like the 24 * maximum right now. 25 */ 26 #define ADAPTER_ROUTES_MAX_GSI VIRTIO_QUEUE_MAX 27 28 typedef struct AdapterRoutes { 29 AdapterInfo adapter; 30 int num_routes; 31 int gsi[ADAPTER_ROUTES_MAX_GSI]; 32 } AdapterRoutes; 33 34 extern const VMStateDescription vmstate_adapter_routes; 35 36 #define VMSTATE_ADAPTER_ROUTES(_f, _s) \ 37 VMSTATE_STRUCT(_f, _s, 1, vmstate_adapter_routes, AdapterRoutes) 38 39 #define TYPE_S390_FLIC_COMMON "s390-flic" 40 #define S390_FLIC_COMMON(obj) \ 41 OBJECT_CHECK(S390FLICState, (obj), TYPE_S390_FLIC_COMMON) 42 43 typedef struct S390FLICState { 44 SysBusDevice parent_obj; 45 /* to limit AdapterRoutes.num_routes for compat */ 46 uint32_t adapter_routes_max_batch; 47 bool ais_supported; 48 } S390FLICState; 49 50 #define S390_FLIC_COMMON_CLASS(klass) \ 51 OBJECT_CLASS_CHECK(S390FLICStateClass, (klass), TYPE_S390_FLIC_COMMON) 52 #define S390_FLIC_COMMON_GET_CLASS(obj) \ 53 OBJECT_GET_CLASS(S390FLICStateClass, (obj), TYPE_S390_FLIC_COMMON) 54 55 typedef struct S390FLICStateClass { 56 DeviceClass parent_class; 57 58 int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc, 59 bool swap, bool maskable, uint8_t flags); 60 int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr, 61 bool do_map); 62 int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes); 63 void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes); 64 int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id, 65 uint16_t subchannel_nr); 66 int (*modify_ais_mode)(S390FLICState *fs, uint8_t isc, uint16_t mode); 67 int (*inject_airq)(S390FLICState *fs, uint8_t type, uint8_t isc, 68 uint8_t flags); 69 } S390FLICStateClass; 70 71 #define TYPE_KVM_S390_FLIC "s390-flic-kvm" 72 #define KVM_S390_FLIC(obj) \ 73 OBJECT_CHECK(KVMS390FLICState, (obj), TYPE_KVM_S390_FLIC) 74 75 #define TYPE_QEMU_S390_FLIC "s390-flic-qemu" 76 #define QEMU_S390_FLIC(obj) \ 77 OBJECT_CHECK(QEMUS390FLICState, (obj), TYPE_QEMU_S390_FLIC) 78 79 #define SIC_IRQ_MODE_ALL 0 80 #define SIC_IRQ_MODE_SINGLE 1 81 #define AIS_MODE_MASK(isc) (0x80 >> isc) 82 83 typedef struct QEMUS390FLICState { 84 S390FLICState parent_obj; 85 uint8_t simm; 86 uint8_t nimm; 87 } QEMUS390FLICState; 88 89 void s390_flic_init(void); 90 91 S390FLICState *s390_get_flic(void); 92 bool ais_needed(void *opaque); 93 94 #ifdef CONFIG_KVM 95 DeviceState *s390_flic_kvm_create(void); 96 #else 97 static inline DeviceState *s390_flic_kvm_create(void) 98 { 99 return NULL; 100 } 101 #endif 102 103 #endif /* HW_S390_FLIC_H */ 104