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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 "exec/hwaddr.h"
14 #include "hw/core/cpu.h"
15 #include "hw/hyperv/hyperv-proto.h"
16
17 typedef struct HvSintRoute HvSintRoute;
18
19 /*
20 * Callback executed in a bottom-half when the status of posting the message
21 * becomes known, before unblocking the connection for further messages
22 */
23 typedef void (*HvSintMsgCb)(void *data, int status);
24
25 HvSintRoute *hyperv_sint_route_new(uint32_t vp_index, uint32_t sint,
26 HvSintMsgCb cb, void *cb_data);
27 void hyperv_sint_route_ref(HvSintRoute *sint_route);
28 void hyperv_sint_route_unref(HvSintRoute *sint_route);
29
30 int hyperv_sint_route_set_sint(HvSintRoute *sint_route);
31
32 /*
33 * Submit a message to be posted in vcpu context. If the submission succeeds,
34 * the status of posting the message is reported via the callback associated
35 * with the @sint_route; until then no more messages are accepted.
36 */
37 int hyperv_post_msg(HvSintRoute *sint_route, struct hyperv_message *msg);
38 /*
39 * Set event flag @eventno, and signal the SINT if the flag has changed.
40 */
41 int hyperv_set_event_flag(HvSintRoute *sint_route, unsigned eventno);
42
43 /*
44 * Handler for messages arriving from the guest via HV_POST_MESSAGE hypercall.
45 * Executed in vcpu context.
46 */
47 typedef uint16_t (*HvMsgHandler)(const struct hyperv_post_message_input *msg,
48 void *data);
49 /*
50 * Associate @handler with the message connection @conn_id, such that @handler
51 * is called with @data when the guest executes HV_POST_MESSAGE hypercall on
52 * @conn_id. If @handler is NULL clear the association.
53 */
54 int hyperv_set_msg_handler(uint32_t conn_id, HvMsgHandler handler, void *data);
55 /*
56 * Associate @notifier with the event connection @conn_id, such that @notifier
57 * is signaled when the guest executes HV_SIGNAL_EVENT hypercall on @conn_id.
58 * If @notifier is NULL clear the association.
59 */
60 int hyperv_set_event_flag_handler(uint32_t conn_id, EventNotifier *notifier);
61
62 /*
63 * Process HV_POST_MESSAGE hypercall: parse the data in the guest memory as
64 * specified in @param, and call the HvMsgHandler associated with the
65 * connection on the message contained therein.
66 */
67 uint16_t hyperv_hcall_post_message(uint64_t param, bool fast);
68 /*
69 * Process HV_SIGNAL_EVENT hypercall: signal the EventNotifier associated with
70 * the connection as specified in @param.
71 */
72 uint16_t hyperv_hcall_signal_event(uint64_t param, bool fast);
73
74 static inline uint32_t hyperv_vp_index(CPUState *cs)
75 {
76 return cs->cpu_index;
77 }
78
79 void hyperv_synic_add(CPUState *cs);
80 void hyperv_synic_reset(CPUState *cs);
81 void hyperv_synic_update(CPUState *cs, bool enable,
82 hwaddr msg_page_addr, hwaddr event_page_addr);
83 bool hyperv_is_synic_enabled(void);
84 bool hyperv_is_synic_present(CPUState *cs);
85
86 /*
87 * Process HVCALL_RESET_DEBUG_SESSION hypercall.
88 */
89 uint16_t hyperv_hcall_reset_dbg_session(uint64_t outgpa);
90 /*
91 * Process HVCALL_RETREIVE_DEBUG_DATA hypercall.
92 */
93 uint16_t hyperv_hcall_retreive_dbg_data(uint64_t ingpa, uint64_t outgpa,
94 bool fast);
95 /*
96 * Process HVCALL_POST_DEBUG_DATA hypercall.
97 */
98 uint16_t hyperv_hcall_post_dbg_data(uint64_t ingpa, uint64_t outgpa, bool fast);
99
100 uint32_t hyperv_syndbg_send(uint64_t ingpa, uint32_t count);
101 uint32_t hyperv_syndbg_recv(uint64_t ingpa, uint32_t count);
102 void hyperv_syndbg_set_pending_page(uint64_t ingpa);
103 uint64_t hyperv_syndbg_query_options(void);
104
105 typedef enum HvSynthDbgMsgType {
106 HV_SYNDBG_MSG_CONNECTION_INFO,
107 HV_SYNDBG_MSG_SEND,
108 HV_SYNDBG_MSG_RECV,
109 HV_SYNDBG_MSG_SET_PENDING_PAGE,
110 HV_SYNDBG_MSG_QUERY_OPTIONS
111 } HvDbgSynthMsgType;
112
113 typedef struct HvSynDbgMsg {
114 HvDbgSynthMsgType type;
115 union {
116 struct {
117 uint32_t host_ip;
118 uint16_t host_port;
119 } connection_info;
120 struct {
121 uint64_t buf_gpa;
122 uint32_t count;
123 uint32_t pending_count;
124 bool is_raw;
125 } send;
126 struct {
127 uint64_t buf_gpa;
128 uint32_t count;
129 uint32_t options;
130 uint64_t timeout;
131 uint32_t retrieved_count;
132 bool is_raw;
133 } recv;
134 struct {
135 uint64_t buf_gpa;
136 } pending_page;
137 struct {
138 uint64_t options;
139 } query_options;
140 } u;
141 } HvSynDbgMsg;
142 typedef uint16_t (*HvSynDbgHandler)(void *context, HvSynDbgMsg *msg);
143 void hyperv_set_syndbg_handler(HvSynDbgHandler handler, void *context);
144
145 bool hyperv_are_vmbus_recommended_features_enabled(void);
146 void hyperv_set_vmbus_recommended_features_enabled(void);
147
148 #endif