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 #include "qemu/queue.h" 20 #include "qom/object.h" 21 22 /* 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 26 * maximum right now. 27 */ 28 #define ADAPTER_ROUTES_MAX_GSI VIRTIO_QUEUE_MAX 29 30 typedef struct AdapterRoutes { 31 AdapterInfo adapter; 32 int num_routes; 33 int gsi[ADAPTER_ROUTES_MAX_GSI]; 34 } AdapterRoutes; 35 36 extern const VMStateDescription vmstate_adapter_routes; 37 38 #define VMSTATE_ADAPTER_ROUTES(_f, _s) \ 39 VMSTATE_STRUCT(_f, _s, 1, vmstate_adapter_routes, AdapterRoutes) 40 41 #define TYPE_S390_FLIC_COMMON "s390-flic" 42 typedef struct S390FLICState S390FLICState; 43 typedef struct S390FLICStateClass S390FLICStateClass; 44 DECLARE_OBJ_CHECKERS(S390FLICState, S390FLICStateClass, 45 S390_FLIC_COMMON, TYPE_S390_FLIC_COMMON) 46 47 struct S390FLICState { 48 SysBusDevice parent_obj; 49 /* to limit AdapterRoutes.num_routes for compat */ 50 uint32_t adapter_routes_max_batch; 51 bool ais_supported; 52 }; 53 54 55 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 void (*inject_service)(S390FLICState *fs, uint32_t parm); 70 void (*inject_io)(S390FLICState *fs, uint16_t subchannel_id, 71 uint16_t subchannel_nr, uint32_t io_int_parm, 72 uint32_t io_int_word); 73 void (*inject_crw_mchk)(S390FLICState *fs); 74 }; 75 76 #define TYPE_KVM_S390_FLIC "s390-flic-kvm" 77 typedef struct KVMS390FLICState KVMS390FLICState; 78 DECLARE_INSTANCE_CHECKER(KVMS390FLICState, KVM_S390_FLIC, 79 TYPE_KVM_S390_FLIC) 80 81 #define TYPE_QEMU_S390_FLIC "s390-flic-qemu" 82 typedef struct QEMUS390FLICState QEMUS390FLICState; 83 DECLARE_INSTANCE_CHECKER(QEMUS390FLICState, QEMU_S390_FLIC, 84 TYPE_QEMU_S390_FLIC) 85 86 #define SIC_IRQ_MODE_ALL 0 87 #define SIC_IRQ_MODE_SINGLE 1 88 #define AIS_MODE_MASK(isc) (0x80 >> isc) 89 90 #define ISC_TO_PENDING_IO(_isc) (0x80 >> (_isc)) 91 #define CR6_TO_PENDING_IO(_cr6) (((_cr6) >> 24) & 0xff) 92 93 /* organize the ISC bits so that the macros above work */ 94 #define FLIC_PENDING_IO_ISC7 (1 << 0) 95 #define FLIC_PENDING_IO_ISC6 (1 << 1) 96 #define FLIC_PENDING_IO_ISC5 (1 << 2) 97 #define FLIC_PENDING_IO_ISC4 (1 << 3) 98 #define FLIC_PENDING_IO_ISC3 (1 << 4) 99 #define FLIC_PENDING_IO_ISC2 (1 << 5) 100 #define FLIC_PENDING_IO_ISC1 (1 << 6) 101 #define FLIC_PENDING_IO_ISC0 (1 << 7) 102 #define FLIC_PENDING_SERVICE (1 << 8) 103 #define FLIC_PENDING_MCHK_CR (1 << 9) 104 105 #define FLIC_PENDING_IO (FLIC_PENDING_IO_ISC0 | FLIC_PENDING_IO_ISC1 | \ 106 FLIC_PENDING_IO_ISC2 | FLIC_PENDING_IO_ISC3 | \ 107 FLIC_PENDING_IO_ISC4 | FLIC_PENDING_IO_ISC5 | \ 108 FLIC_PENDING_IO_ISC6 | FLIC_PENDING_IO_ISC7) 109 110 typedef struct QEMUS390FlicIO { 111 uint16_t id; 112 uint16_t nr; 113 uint32_t parm; 114 uint32_t word; 115 QLIST_ENTRY(QEMUS390FlicIO) next; 116 } QEMUS390FlicIO; 117 118 struct QEMUS390FLICState { 119 S390FLICState parent_obj; 120 uint32_t pending; 121 uint32_t service_param; 122 uint8_t simm; 123 uint8_t nimm; 124 QLIST_HEAD(, QEMUS390FlicIO) io[8]; 125 }; 126 127 uint32_t qemu_s390_flic_dequeue_service(QEMUS390FLICState *flic); 128 QEMUS390FlicIO *qemu_s390_flic_dequeue_io(QEMUS390FLICState *flic, 129 uint64_t cr6); 130 void qemu_s390_flic_dequeue_crw_mchk(QEMUS390FLICState *flic); 131 bool qemu_s390_flic_has_service(QEMUS390FLICState *flic); 132 bool qemu_s390_flic_has_io(QEMUS390FLICState *fs, uint64_t cr6); 133 bool qemu_s390_flic_has_crw_mchk(QEMUS390FLICState *flic); 134 bool qemu_s390_flic_has_any(QEMUS390FLICState *flic); 135 136 void s390_flic_init(void); 137 138 S390FLICState *s390_get_flic(void); 139 QEMUS390FLICState *s390_get_qemu_flic(S390FLICState *fs); 140 S390FLICStateClass *s390_get_flic_class(S390FLICState *fs); 141 bool ais_needed(void *opaque); 142 143 #endif /* HW_S390_FLIC_H */ 144