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 } S390FLICStateClass; 68 69 #define TYPE_KVM_S390_FLIC "s390-flic-kvm" 70 #define KVM_S390_FLIC(obj) \ 71 OBJECT_CHECK(KVMS390FLICState, (obj), TYPE_KVM_S390_FLIC) 72 73 #define TYPE_QEMU_S390_FLIC "s390-flic-qemu" 74 #define QEMU_S390_FLIC(obj) \ 75 OBJECT_CHECK(QEMUS390FLICState, (obj), TYPE_QEMU_S390_FLIC) 76 77 #define SIC_IRQ_MODE_ALL 0 78 #define SIC_IRQ_MODE_SINGLE 1 79 #define AIS_MODE_MASK(isc) (0x80 >> isc) 80 81 typedef struct QEMUS390FLICState { 82 S390FLICState parent_obj; 83 uint8_t simm; 84 uint8_t nimm; 85 } QEMUS390FLICState; 86 87 void s390_flic_init(void); 88 89 S390FLICState *s390_get_flic(void); 90 91 #ifdef CONFIG_KVM 92 DeviceState *s390_flic_kvm_create(void); 93 #else 94 static inline DeviceState *s390_flic_kvm_create(void) 95 { 96 return NULL; 97 } 98 #endif 99 100 #endif /* HW_S390_FLIC_H */ 101