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 #define TYPE_S390_FLIC_COMMON "s390-flic" 35 #define S390_FLIC_COMMON(obj) \ 36 OBJECT_CHECK(S390FLICState, (obj), TYPE_S390_FLIC_COMMON) 37 38 typedef struct S390FLICState { 39 SysBusDevice parent_obj; 40 /* to limit AdapterRoutes.num_routes for compat */ 41 uint32_t adapter_routes_max_batch; 42 43 } S390FLICState; 44 45 #define S390_FLIC_COMMON_CLASS(klass) \ 46 OBJECT_CLASS_CHECK(S390FLICStateClass, (klass), TYPE_S390_FLIC_COMMON) 47 #define S390_FLIC_COMMON_GET_CLASS(obj) \ 48 OBJECT_GET_CLASS(S390FLICStateClass, (obj), TYPE_S390_FLIC_COMMON) 49 50 typedef struct S390FLICStateClass { 51 DeviceClass parent_class; 52 53 int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc, 54 bool swap, bool maskable); 55 int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr, 56 bool do_map); 57 int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes); 58 void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes); 59 int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id, 60 uint16_t subchannel_nr); 61 } S390FLICStateClass; 62 63 #define TYPE_KVM_S390_FLIC "s390-flic-kvm" 64 #define KVM_S390_FLIC(obj) \ 65 OBJECT_CHECK(KVMS390FLICState, (obj), TYPE_KVM_S390_FLIC) 66 67 #define TYPE_QEMU_S390_FLIC "s390-flic-qemu" 68 #define QEMU_S390_FLIC(obj) \ 69 OBJECT_CHECK(QEMUS390FLICState, (obj), TYPE_QEMU_S390_FLIC) 70 71 typedef struct QEMUS390FLICState { 72 S390FLICState parent_obj; 73 } QEMUS390FLICState; 74 75 void s390_flic_init(void); 76 77 S390FLICState *s390_get_flic(void); 78 79 #ifdef CONFIG_KVM 80 DeviceState *s390_flic_kvm_create(void); 81 #else 82 static inline DeviceState *s390_flic_kvm_create(void) 83 { 84 return NULL; 85 } 86 #endif 87 88 #endif /* HW_S390_FLIC_H */ 89