cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

s390_flic.h (5066B)

      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
     30typedef struct AdapterRoutes {
     31    AdapterInfo adapter;
     32    int num_routes;
     33    int gsi[ADAPTER_ROUTES_MAX_GSI];
     34} AdapterRoutes;
     35
     36extern 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"
     42OBJECT_DECLARE_TYPE(S390FLICState, S390FLICStateClass,
     43                    S390_FLIC_COMMON)
     44
     45struct S390FLICState {
     46    SysBusDevice parent_obj;
     47    /* to limit AdapterRoutes.num_routes for compat */
     48    uint32_t adapter_routes_max_batch;
     49    bool ais_supported;
     50};
     51
     52
     53struct S390FLICStateClass {
     54    DeviceClass parent_class;
     55
     56    int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc,
     57                               bool swap, bool maskable, uint8_t flags);
     58    int (*io_adapter_map)(S390FLICState *fs, uint32_t id, uint64_t map_addr,
     59                          bool do_map);
     60    int (*add_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
     61    void (*release_adapter_routes)(S390FLICState *fs, AdapterRoutes *routes);
     62    int (*clear_io_irq)(S390FLICState *fs, uint16_t subchannel_id,
     63                        uint16_t subchannel_nr);
     64    int (*modify_ais_mode)(S390FLICState *fs, uint8_t isc, uint16_t mode);
     65    int (*inject_airq)(S390FLICState *fs, uint8_t type, uint8_t isc,
     66                       uint8_t flags);
     67    void (*inject_service)(S390FLICState *fs, uint32_t parm);
     68    void (*inject_io)(S390FLICState *fs, uint16_t subchannel_id,
     69                      uint16_t subchannel_nr, uint32_t io_int_parm,
     70                      uint32_t io_int_word);
     71    void (*inject_crw_mchk)(S390FLICState *fs);
     72};
     73
     74#define TYPE_KVM_S390_FLIC "s390-flic-kvm"
     75typedef struct KVMS390FLICState KVMS390FLICState;
     76DECLARE_INSTANCE_CHECKER(KVMS390FLICState, KVM_S390_FLIC,
     77                         TYPE_KVM_S390_FLIC)
     78
     79#define TYPE_QEMU_S390_FLIC "s390-flic-qemu"
     80OBJECT_DECLARE_SIMPLE_TYPE(QEMUS390FLICState, QEMU_S390_FLIC)
     81
     82#define SIC_IRQ_MODE_ALL 0
     83#define SIC_IRQ_MODE_SINGLE 1
     84#define AIS_MODE_MASK(isc) (0x80 >> isc)
     85
     86#define ISC_TO_PENDING_IO(_isc) (0x80 >> (_isc))
     87#define CR6_TO_PENDING_IO(_cr6) (((_cr6) >> 24) & 0xff)
     88
     89/* organize the ISC bits so that the macros above work */
     90#define FLIC_PENDING_IO_ISC7            (1 << 0)
     91#define FLIC_PENDING_IO_ISC6            (1 << 1)
     92#define FLIC_PENDING_IO_ISC5            (1 << 2)
     93#define FLIC_PENDING_IO_ISC4            (1 << 3)
     94#define FLIC_PENDING_IO_ISC3            (1 << 4)
     95#define FLIC_PENDING_IO_ISC2            (1 << 5)
     96#define FLIC_PENDING_IO_ISC1            (1 << 6)
     97#define FLIC_PENDING_IO_ISC0            (1 << 7)
     98#define FLIC_PENDING_SERVICE            (1 << 8)
     99#define FLIC_PENDING_MCHK_CR            (1 << 9)
    100
    101#define FLIC_PENDING_IO (FLIC_PENDING_IO_ISC0 | FLIC_PENDING_IO_ISC1 | \
    102                         FLIC_PENDING_IO_ISC2 | FLIC_PENDING_IO_ISC3 | \
    103                         FLIC_PENDING_IO_ISC4 | FLIC_PENDING_IO_ISC5 | \
    104                         FLIC_PENDING_IO_ISC6 | FLIC_PENDING_IO_ISC7)
    105
    106typedef struct QEMUS390FlicIO {
    107    uint16_t id;
    108    uint16_t nr;
    109    uint32_t parm;
    110    uint32_t word;
    111    QLIST_ENTRY(QEMUS390FlicIO) next;
    112} QEMUS390FlicIO;
    113
    114struct QEMUS390FLICState {
    115    S390FLICState parent_obj;
    116    uint32_t pending;
    117    uint32_t service_param;
    118    uint8_t simm;
    119    uint8_t nimm;
    120    QLIST_HEAD(, QEMUS390FlicIO) io[8];
    121};
    122
    123uint32_t qemu_s390_flic_dequeue_service(QEMUS390FLICState *flic);
    124QEMUS390FlicIO *qemu_s390_flic_dequeue_io(QEMUS390FLICState *flic,
    125                                          uint64_t cr6);
    126void qemu_s390_flic_dequeue_crw_mchk(QEMUS390FLICState *flic);
    127bool qemu_s390_flic_has_service(QEMUS390FLICState *flic);
    128bool qemu_s390_flic_has_io(QEMUS390FLICState *fs, uint64_t cr6);
    129bool qemu_s390_flic_has_crw_mchk(QEMUS390FLICState *flic);
    130bool qemu_s390_flic_has_any(QEMUS390FLICState *flic);
    131
    132void s390_flic_init(void);
    133
    134S390FLICState *s390_get_flic(void);
    135QEMUS390FLICState *s390_get_qemu_flic(S390FLICState *fs);
    136S390FLICStateClass *s390_get_flic_class(S390FLICState *fs);
    137void s390_crw_mchk(void);
    138void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
    139                       uint32_t io_int_parm, uint32_t io_int_word);
    140bool ais_needed(void *opaque);
    141
    142#endif /* HW_S390_FLIC_H */