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 TYPE_S390_FLIC_COMMON "s390-flic" 39 OBJECT_DECLARE_TYPE(S390FLICState, S390FLICStateClass, 40 S390_FLIC_COMMON) 41 42 struct S390FLICState { 43 SysBusDevice parent_obj; 44 bool ais_supported; 45 }; 46 47 48 struct S390FLICStateClass { 49 DeviceClass parent_class; 50 51 int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc, 52 bool swap, bool maskable, uint8_t flags); 53 int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr, 54 bool do_map); 55 int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes); 56 void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes); 57 int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id, 58 uint16_t subchannel_nr); 59 int (*modify_ais_mode)(S390FLICState *fs, uint8_t isc, uint16_t mode); 60 int (*inject_airq)(S390FLICState *fs, uint8_t type, uint8_t isc, 61 uint8_t flags); 62 void (*inject_service)(S390FLICState *fs, uint32_t parm); 63 void (*inject_io)(S390FLICState *fs, uint16_t subchannel_id, 64 uint16_t subchannel_nr, uint32_t io_int_parm, 65 uint32_t io_int_word); 66 void (*inject_crw_mchk)(S390FLICState *fs); 67 }; 68 69 #define TYPE_KVM_S390_FLIC "s390-flic-kvm" 70 typedef struct KVMS390FLICState KVMS390FLICState; 71 DECLARE_INSTANCE_CHECKER(KVMS390FLICState, KVM_S390_FLIC, 72 TYPE_KVM_S390_FLIC) 73 74 #define TYPE_QEMU_S390_FLIC "s390-flic-qemu" 75 OBJECT_DECLARE_SIMPLE_TYPE(QEMUS390FLICState, 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 #define ISC_TO_PENDING_IO(_isc) (0x80 >> (_isc)) 82 #define CR6_TO_PENDING_IO(_cr6) (((_cr6) >> 24) & 0xff) 83 84 /* organize the ISC bits so that the macros above work */ 85 #define FLIC_PENDING_IO_ISC7 (1 << 0) 86 #define FLIC_PENDING_IO_ISC6 (1 << 1) 87 #define FLIC_PENDING_IO_ISC5 (1 << 2) 88 #define FLIC_PENDING_IO_ISC4 (1 << 3) 89 #define FLIC_PENDING_IO_ISC3 (1 << 4) 90 #define FLIC_PENDING_IO_ISC2 (1 << 5) 91 #define FLIC_PENDING_IO_ISC1 (1 << 6) 92 #define FLIC_PENDING_IO_ISC0 (1 << 7) 93 #define FLIC_PENDING_SERVICE (1 << 8) 94 #define FLIC_PENDING_MCHK_CR (1 << 9) 95 96 #define FLIC_PENDING_IO (FLIC_PENDING_IO_ISC0 | FLIC_PENDING_IO_ISC1 | \ 97 FLIC_PENDING_IO_ISC2 | FLIC_PENDING_IO_ISC3 | \ 98 FLIC_PENDING_IO_ISC4 | FLIC_PENDING_IO_ISC5 | \ 99 FLIC_PENDING_IO_ISC6 | FLIC_PENDING_IO_ISC7) 100 101 typedef struct QEMUS390FlicIO { 102 uint16_t id; 103 uint16_t nr; 104 uint32_t parm; 105 uint32_t word; 106 QLIST_ENTRY(QEMUS390FlicIO) next; 107 } QEMUS390FlicIO; 108 109 struct QEMUS390FLICState { 110 S390FLICState parent_obj; 111 uint32_t pending; 112 uint32_t service_param; 113 uint8_t simm; 114 uint8_t nimm; 115 QLIST_HEAD(, QEMUS390FlicIO) io[8]; 116 bool migrate_all_state; 117 }; 118 119 uint32_t qemu_s390_flic_dequeue_service(QEMUS390FLICState *flic); 120 QEMUS390FlicIO *qemu_s390_flic_dequeue_io(QEMUS390FLICState *flic, 121 uint64_t cr6); 122 void qemu_s390_flic_dequeue_crw_mchk(QEMUS390FLICState *flic); 123 bool qemu_s390_flic_has_service(QEMUS390FLICState *flic); 124 bool qemu_s390_flic_has_io(QEMUS390FLICState *fs, uint64_t cr6); 125 bool qemu_s390_flic_has_crw_mchk(QEMUS390FLICState *flic); 126 bool qemu_s390_flic_has_any(QEMUS390FLICState *flic); 127 128 void s390_flic_init(void); 129 130 S390FLICState *s390_get_flic(void); 131 QEMUS390FLICState *s390_get_qemu_flic(S390FLICState *fs); 132 S390FLICStateClass *s390_get_flic_class(S390FLICState *fs); 133 void s390_crw_mchk(void); 134 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr, 135 uint32_t io_int_parm, uint32_t io_int_word); 136 bool ais_needed(void *opaque); 137 138 #endif /* HW_S390_FLIC_H */ 139