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hyperv.h (4680B)

      1 /*
      2  * Hyper-V guest/hypervisor interaction
      3  *
      4  * Copyright (c) 2015-2018 Virtuozzo International GmbH.
      5  *
      6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
      7  * See the COPYING file in the top-level directory.
      8  */
      9 
     10 #ifndef HW_HYPERV_HYPERV_H
     11 #define HW_HYPERV_HYPERV_H
     12 
     13 #include "cpu-qom.h"
     14 #include "hw/hyperv/hyperv-proto.h"
     15 
     16 typedef struct HvSintRoute HvSintRoute;
     17 
     18 /*
     19  * Callback executed in a bottom-half when the status of posting the message
     20  * becomes known, before unblocking the connection for further messages
     21  */
     22 typedef void (*HvSintMsgCb)(void *data, int status);
     23 
     24 HvSintRoute *hyperv_sint_route_new(uint32_t vp_index, uint32_t sint,
     25                                    HvSintMsgCb cb, void *cb_data);
     26 void hyperv_sint_route_ref(HvSintRoute *sint_route);
     27 void hyperv_sint_route_unref(HvSintRoute *sint_route);
     28 
     29 int hyperv_sint_route_set_sint(HvSintRoute *sint_route);
     30 
     31 /*
     32  * Submit a message to be posted in vcpu context.  If the submission succeeds,
     33  * the status of posting the message is reported via the callback associated
     34  * with the @sint_route; until then no more messages are accepted.
     35  */
     36 int hyperv_post_msg(HvSintRoute *sint_route, struct hyperv_message *msg);
     37 /*
     38  * Set event flag @eventno, and signal the SINT if the flag has changed.
     39  */
     40 int hyperv_set_event_flag(HvSintRoute *sint_route, unsigned eventno);
     41 
     42 /*
     43  * Handler for messages arriving from the guest via HV_POST_MESSAGE hypercall.
     44  * Executed in vcpu context.
     45  */
     46 typedef uint16_t (*HvMsgHandler)(const struct hyperv_post_message_input *msg,
     47                                  void *data);
     48 /*
     49  * Associate @handler with the message connection @conn_id, such that @handler
     50  * is called with @data when the guest executes HV_POST_MESSAGE hypercall on
     51  * @conn_id.  If @handler is NULL clear the association.
     52  */
     53 int hyperv_set_msg_handler(uint32_t conn_id, HvMsgHandler handler, void *data);
     54 /*
     55  * Associate @notifier with the event connection @conn_id, such that @notifier
     56  * is signaled when the guest executes HV_SIGNAL_EVENT hypercall on @conn_id.
     57  * If @notifier is NULL clear the association.
     58  */
     59 int hyperv_set_event_flag_handler(uint32_t conn_id, EventNotifier *notifier);
     60 
     61 /*
     62  * Process HV_POST_MESSAGE hypercall: parse the data in the guest memory as
     63  * specified in @param, and call the HvMsgHandler associated with the
     64  * connection on the message contained therein.
     65  */
     66 uint16_t hyperv_hcall_post_message(uint64_t param, bool fast);
     67 /*
     68  * Process HV_SIGNAL_EVENT hypercall: signal the EventNotifier associated with
     69  * the connection as specified in @param.
     70  */
     71 uint16_t hyperv_hcall_signal_event(uint64_t param, bool fast);
     72 
     73 static inline uint32_t hyperv_vp_index(CPUState *cs)
     74 {
     75     return cs->cpu_index;
     76 }
     77 
     78 void hyperv_synic_add(CPUState *cs);
     79 void hyperv_synic_reset(CPUState *cs);
     80 void hyperv_synic_update(CPUState *cs, bool enable,
     81                          hwaddr msg_page_addr, hwaddr event_page_addr);
     82 bool hyperv_is_synic_enabled(void);
     83 
     84 /*
     85  * Process HVCALL_RESET_DEBUG_SESSION hypercall.
     86  */
     87 uint16_t hyperv_hcall_reset_dbg_session(uint64_t outgpa);
     88 /*
     89  * Process HVCALL_RETREIVE_DEBUG_DATA hypercall.
     90  */
     91 uint16_t hyperv_hcall_retreive_dbg_data(uint64_t ingpa, uint64_t outgpa,
     92                                         bool fast);
     93 /*
     94  * Process HVCALL_POST_DEBUG_DATA hypercall.
     95  */
     96 uint16_t hyperv_hcall_post_dbg_data(uint64_t ingpa, uint64_t outgpa, bool fast);
     97 
     98 uint32_t hyperv_syndbg_send(uint64_t ingpa, uint32_t count);
     99 uint32_t hyperv_syndbg_recv(uint64_t ingpa, uint32_t count);
    100 void hyperv_syndbg_set_pending_page(uint64_t ingpa);
    101 uint64_t hyperv_syndbg_query_options(void);
    102 
    103 typedef enum HvSynthDbgMsgType {
    104     HV_SYNDBG_MSG_CONNECTION_INFO,
    105     HV_SYNDBG_MSG_SEND,
    106     HV_SYNDBG_MSG_RECV,
    107     HV_SYNDBG_MSG_SET_PENDING_PAGE,
    108     HV_SYNDBG_MSG_QUERY_OPTIONS
    109 } HvDbgSynthMsgType;
    110 
    111 typedef struct HvSynDbgMsg {
    112     HvDbgSynthMsgType type;
    113     union {
    114         struct {
    115             uint32_t host_ip;
    116             uint16_t host_port;
    117         } connection_info;
    118         struct {
    119             uint64_t buf_gpa;
    120             uint32_t count;
    121             uint32_t pending_count;
    122             bool is_raw;
    123         } send;
    124         struct {
    125             uint64_t buf_gpa;
    126             uint32_t count;
    127             uint32_t options;
    128             uint64_t timeout;
    129             uint32_t retrieved_count;
    130             bool is_raw;
    131         } recv;
    132         struct {
    133             uint64_t buf_gpa;
    134         } pending_page;
    135         struct {
    136             uint64_t options;
    137         } query_options;
    138     } u;
    139 } HvSynDbgMsg;
    140 typedef uint16_t (*HvSynDbgHandler)(void *context, HvSynDbgMsg *msg);
    141 void hyperv_set_syndbg_handler(HvSynDbgHandler handler, void *context);
    142 #endif