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/*
* Hyper-V guest/hypervisor interaction
*
* Copyright (c) 2015-2018 Virtuozzo International GmbH.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef HW_HYPERV_HYPERV_H
#define HW_HYPERV_HYPERV_H
#include "cpu-qom.h"
#include "hw/hyperv/hyperv-proto.h"
typedef struct HvSintRoute HvSintRoute;
/*
* Callback executed in a bottom-half when the status of posting the message
* becomes known, before unblocking the connection for further messages
*/
typedef void (*HvSintMsgCb)(void *data, int status);
HvSintRoute *hyperv_sint_route_new(uint32_t vp_index, uint32_t sint,
HvSintMsgCb cb, void *cb_data);
void hyperv_sint_route_ref(HvSintRoute *sint_route);
void hyperv_sint_route_unref(HvSintRoute *sint_route);
int hyperv_sint_route_set_sint(HvSintRoute *sint_route);
/*
* Submit a message to be posted in vcpu context. If the submission succeeds,
* the status of posting the message is reported via the callback associated
* with the @sint_route; until then no more messages are accepted.
*/
int hyperv_post_msg(HvSintRoute *sint_route, struct hyperv_message *msg);
/*
* Set event flag @eventno, and signal the SINT if the flag has changed.
*/
int hyperv_set_event_flag(HvSintRoute *sint_route, unsigned eventno);
/*
* Handler for messages arriving from the guest via HV_POST_MESSAGE hypercall.
* Executed in vcpu context.
*/
typedef uint16_t (*HvMsgHandler)(const struct hyperv_post_message_input *msg,
void *data);
/*
* Associate @handler with the message connection @conn_id, such that @handler
* is called with @data when the guest executes HV_POST_MESSAGE hypercall on
* @conn_id. If @handler is NULL clear the association.
*/
int hyperv_set_msg_handler(uint32_t conn_id, HvMsgHandler handler, void *data);
/*
* Associate @notifier with the event connection @conn_id, such that @notifier
* is signaled when the guest executes HV_SIGNAL_EVENT hypercall on @conn_id.
* If @notifier is NULL clear the association.
*/
int hyperv_set_event_flag_handler(uint32_t conn_id, EventNotifier *notifier);
/*
* Process HV_POST_MESSAGE hypercall: parse the data in the guest memory as
* specified in @param, and call the HvMsgHandler associated with the
* connection on the message contained therein.
*/
uint16_t hyperv_hcall_post_message(uint64_t param, bool fast);
/*
* Process HV_SIGNAL_EVENT hypercall: signal the EventNotifier associated with
* the connection as specified in @param.
*/
uint16_t hyperv_hcall_signal_event(uint64_t param, bool fast);
static inline uint32_t hyperv_vp_index(CPUState *cs)
{
return cs->cpu_index;
}
void hyperv_synic_add(CPUState *cs);
void hyperv_synic_reset(CPUState *cs);
void hyperv_synic_update(CPUState *cs, bool enable,
hwaddr msg_page_addr, hwaddr event_page_addr);
bool hyperv_is_synic_enabled(void);
#endif
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