76036a5fc7
Add handling of POST_MESSAGE hypercall. For that, add an interface to regsiter a handler for the messages arrived from the guest on a particular connection id (IOW set up a message connection in Hyper-V speak). Signed-off-by: Roman Kagan <rkagan@virtuozzo.com> Message-Id: <20180921082217.29481-10-rkagan@virtuozzo.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
/*
|
|
* 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);
|
|
|
|
#endif
|