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1 /*
2 * Definitions for Hyper-V guest/hypervisor interaction
3 *
4 * Copyright (c) 2017-2018 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_PROTO_H
11 #define HW_HYPERV_HYPERV_PROTO_H
12
13 #include "qemu/bitmap.h"
14
15 /*
16 * Hypercall status code
17 */
18 #define HV_STATUS_SUCCESS 0
19 #define HV_STATUS_INVALID_HYPERCALL_CODE 2
20 #define HV_STATUS_INVALID_HYPERCALL_INPUT 3
21 #define HV_STATUS_INVALID_ALIGNMENT 4
22 #define HV_STATUS_INVALID_PARAMETER 5
23 #define HV_STATUS_INSUFFICIENT_MEMORY 11
24 #define HV_STATUS_INVALID_PORT_ID 17
25 #define HV_STATUS_INVALID_CONNECTION_ID 18
26 #define HV_STATUS_INSUFFICIENT_BUFFERS 19
27 #define HV_STATUS_NOT_ACKNOWLEDGED 20
28 #define HV_STATUS_NO_DATA 27
29
30 /*
31 * Hypercall numbers
32 */
33 #define HV_POST_MESSAGE 0x005c
34 #define HV_SIGNAL_EVENT 0x005d
35 #define HV_POST_DEBUG_DATA 0x0069
36 #define HV_RETRIEVE_DEBUG_DATA 0x006a
37 #define HV_RESET_DEBUG_SESSION 0x006b
38 #define HV_HYPERCALL_FAST (1u << 16)
39
40 /*
41 * Message size
42 */
43 #define HV_MESSAGE_PAYLOAD_SIZE 240
44
45 /*
46 * Message types
47 */
48 #define HV_MESSAGE_NONE 0x00000000
49 #define HV_MESSAGE_VMBUS 0x00000001
50 #define HV_MESSAGE_UNMAPPED_GPA 0x80000000
51 #define HV_MESSAGE_GPA_INTERCEPT 0x80000001
52 #define HV_MESSAGE_TIMER_EXPIRED 0x80000010
53 #define HV_MESSAGE_INVALID_VP_REGISTER_VALUE 0x80000020
54 #define HV_MESSAGE_UNRECOVERABLE_EXCEPTION 0x80000021
55 #define HV_MESSAGE_UNSUPPORTED_FEATURE 0x80000022
56 #define HV_MESSAGE_EVENTLOG_BUFFERCOMPLETE 0x80000040
57 #define HV_MESSAGE_X64_IOPORT_INTERCEPT 0x80010000
58 #define HV_MESSAGE_X64_MSR_INTERCEPT 0x80010001
59 #define HV_MESSAGE_X64_CPUID_INTERCEPT 0x80010002
60 #define HV_MESSAGE_X64_EXCEPTION_INTERCEPT 0x80010003
61 #define HV_MESSAGE_X64_APIC_EOI 0x80010004
62 #define HV_MESSAGE_X64_LEGACY_FP_ERROR 0x80010005
63
64 /*
65 * Hyper-V Synthetic debug options MSR
66 */
67 #define HV_X64_MSR_SYNDBG_CONTROL 0x400000F1
68 #define HV_X64_MSR_SYNDBG_STATUS 0x400000F2
69 #define HV_X64_MSR_SYNDBG_SEND_BUFFER 0x400000F3
70 #define HV_X64_MSR_SYNDBG_RECV_BUFFER 0x400000F4
71 #define HV_X64_MSR_SYNDBG_PENDING_BUFFER 0x400000F5
72 #define HV_X64_MSR_SYNDBG_OPTIONS 0x400000FF
73
74 #define HV_X64_SYNDBG_OPTION_USE_HCALLS BIT(2)
75
76 /*
77 * Message flags
78 */
79 #define HV_MESSAGE_FLAG_PENDING 0x1
80
81 /*
82 * Number of synthetic interrupts
83 */
84 #define HV_SINT_COUNT 16
85
86 /*
87 * Event flags number per SINT
88 */
89 #define HV_EVENT_FLAGS_COUNT (256 * 8)
90
91 /*
92 * Connection id valid bits
93 */
94 #define HV_CONNECTION_ID_MASK 0x00ffffff
95
96 /*
97 * Input structure for POST_MESSAGE hypercall
98 */
99 struct hyperv_post_message_input {
100 uint32_t connection_id;
101 uint32_t _reserved;
102 uint32_t message_type;
103 uint32_t payload_size;
104 uint8_t payload[HV_MESSAGE_PAYLOAD_SIZE];
105 };
106
107 /*
108 * Input structure for SIGNAL_EVENT hypercall
109 */
110 struct hyperv_signal_event_input {
111 uint32_t connection_id;
112 uint16_t flag_number;
113 uint16_t _reserved_zero;
114 };
115
116 /*
117 * SynIC message structures
118 */
119 struct hyperv_message_header {
120 uint32_t message_type;
121 uint8_t payload_size;
122 uint8_t message_flags; /* HV_MESSAGE_FLAG_XX */
123 uint8_t _reserved[2];
124 uint64_t sender;
125 };
126
127 struct hyperv_message {
128 struct hyperv_message_header header;
129 uint8_t payload[HV_MESSAGE_PAYLOAD_SIZE];
130 };
131
132 struct hyperv_message_page {
133 struct hyperv_message slot[HV_SINT_COUNT];
134 };
135
136 /*
137 * SynIC event flags structures
138 */
139 struct hyperv_event_flags {
140 DECLARE_BITMAP(flags, HV_EVENT_FLAGS_COUNT);
141 };
142
143 struct hyperv_event_flags_page {
144 struct hyperv_event_flags slot[HV_SINT_COUNT];
145 };
146
147 /*
148 * Kernel debugger structures
149 */
150
151 /* Options flags for hyperv_reset_debug_session */
152 #define HV_DEBUG_PURGE_INCOMING_DATA 0x00000001
153 #define HV_DEBUG_PURGE_OUTGOING_DATA 0x00000002
154 struct hyperv_reset_debug_session_input {
155 uint32_t options;
156 } __attribute__ ((__packed__));
157
158 struct hyperv_reset_debug_session_output {
159 uint32_t host_ip;
160 uint32_t target_ip;
161 uint16_t host_port;
162 uint16_t target_port;
163 uint8_t host_mac[6];
164 uint8_t target_mac[6];
165 } __attribute__ ((__packed__));
166
167 /* Options for hyperv_post_debug_data */
168 #define HV_DEBUG_POST_LOOP 0x00000001
169
170 struct hyperv_post_debug_data_input {
171 uint32_t count;
172 uint32_t options;
173 /*uint8_t data[HV_HYP_PAGE_SIZE - 2 * sizeof(uint32_t)];*/
174 } __attribute__ ((__packed__));
175
176 struct hyperv_post_debug_data_output {
177 uint32_t pending_count;
178 } __attribute__ ((__packed__));
179
180 /* Options for hyperv_retrieve_debug_data */
181 #define HV_DEBUG_RETRIEVE_LOOP 0x00000001
182 #define HV_DEBUG_RETRIEVE_TEST_ACTIVITY 0x00000002
183
184 struct hyperv_retrieve_debug_data_input {
185 uint32_t count;
186 uint32_t options;
187 uint64_t timeout;
188 } __attribute__ ((__packed__));
189
190 struct hyperv_retrieve_debug_data_output {
191 uint32_t retrieved_count;
192 uint32_t remaining_count;
193 } __attribute__ ((__packed__));
194 #endif