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/*

 * SCLP

 *    Event Facility definitions

 *

 * Copyright IBM, Corp. 2012

 *

 * Authors:

 *  Heinz Graalfs <graalfs@de.ibm.com>

 *

 * This work is licensed under the terms of the GNU GPL, version 2 or (at your

 * option) any later version.  See the COPYING file in the top-level directory.

 *

 */

#ifndef HW_S390_SCLP_EVENT_FACILITY_H

#define HW_S390_SCLP_EVENT_FACILITY_H

#include <hw/qdev.h>

#include "qemu/thread.h"

/* SCLP event types */

#define SCLP_EVENT_ASCII_CONSOLE_DATA           0x1a

#define SCLP_EVENT_SIGNAL_QUIESCE               0x1d

/* SCLP event masks */

#define SCLP_EVENT_MASK_SIGNAL_QUIESCE          0x00000008

#define SCLP_EVENT_MASK_MSG_ASCII               0x00000040

#define SCLP_UNCONDITIONAL_READ                 0x00

#define SCLP_SELECTIVE_READ                     0x01

#define TYPE_SCLP_EVENT "s390-sclp-event-type"

#define SCLP_EVENT(obj) \

     OBJECT_CHECK(SCLPEvent, (obj), TYPE_SCLP_EVENT)

#define SCLP_EVENT_CLASS(klass) \

     OBJECT_CLASS_CHECK(SCLPEventClass, (klass), TYPE_SCLP_EVENT)

#define SCLP_EVENT_GET_CLASS(obj) \

     OBJECT_GET_CLASS(SCLPEventClass, (obj), TYPE_SCLP_EVENT)

typedef struct WriteEventMask {

    SCCBHeader h;

    uint16_t _reserved;

    uint16_t mask_length;

    uint32_t cp_receive_mask;

    uint32_t cp_send_mask;

    uint32_t send_mask;

    uint32_t receive_mask;

} QEMU_PACKED WriteEventMask;

typedef struct EventBufferHeader {

    uint16_t length;

    uint8_t  type;

    uint8_t  flags;

    uint16_t _reserved;

} QEMU_PACKED EventBufferHeader;

typedef struct WriteEventData {

    SCCBHeader h;

    EventBufferHeader ebh;

} QEMU_PACKED WriteEventData;

typedef struct ReadEventData {

    SCCBHeader h;

    EventBufferHeader ebh;

    uint32_t mask;

} QEMU_PACKED ReadEventData;

typedef struct SCLPEvent {

    DeviceState qdev;

    bool event_pending;

    uint32_t event_type;

    char *name;

} SCLPEvent;

typedef struct SCLPEventClass {

    DeviceClass parent_class;

    int (*init)(SCLPEvent *event);

    int (*exit)(SCLPEvent *event);

    /* get SCLP's send mask */

    unsigned int (*get_send_mask)(void);

    /* get SCLP's receive mask */

    unsigned int (*get_receive_mask)(void);

    int (*read_event_data)(SCLPEvent *event, EventBufferHeader *evt_buf_hdr,

                           int *slen);

    int (*write_event_data)(SCLPEvent *event, EventBufferHeader *evt_buf_hdr);

    /* returns the supported event type */

    int (*event_type)(void);

} SCLPEventClass;

#endif