1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
#ifndef _IPXE_HYPERV_H
#define _IPXE_HYPERV_H
/** @file
*
* Hyper-V interface
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <ipxe/io.h>
/** Hyper-V interface identification */
#define HV_INTERFACE_ID 0x31237648 /* "Hv#1" */
/** Guest OS identity for iPXE
*
* This field comprises:
*
* Bit 63 : set to 1 to indicate an open source OS
* Bits 62:56 : OS Type
* Bits 55:48 : OS ID
* Bits 47:16 : Version
* Bits 15:0 : Build number
*
* There appears to be no central registry for the "OS Type". The
* specification states that "Linux is 0x100", and the FreeBSD source
* states that "FreeBSD is 0x200". Both of these statements are
* actually referring to the combined "OS Type" and "OS ID" field.
*
* We choose to use 0x98ae: this is generated by setting bit 63 (to
* indicate an open source OS) and setting the OS Type+ID equal to the
* PnP vendor ID used in romprefix.S. No version information or build
* number is included.
*/
#define HV_GUEST_OS_ID_IPXE ( ( 1ULL << 63 ) | ( 0x18aeULL << 48 ) )
/** Enable hypercall page */
#define HV_HYPERCALL_ENABLE 0x00000001UL
/** Enable SynIC */
#define HV_SCONTROL_ENABLE 0x00000001UL
/** Enable SynIC event flags */
#define HV_SIEFP_ENABLE 0x00000001UL
/** Enable SynIC messages */
#define HV_SIMP_ENABLE 0x00000001UL
/** Perform implicit EOI upon synthetic interrupt delivery */
#define HV_SINT_AUTO_EOI 0x00020000UL
/** Mask synthetic interrupt */
#define HV_SINT_MASKED 0x00010000UL
/** Synthetic interrupt vector */
#define HV_SINT_VECTOR(x) ( (x) << 0 )
/** Synthetic interrupt vector mask */
#define HV_SINT_VECTOR_MASK HV_SINT_VECTOR ( 0xff )
/** Post message */
#define HV_POST_MESSAGE 0x005c
/** A posted message
*
* This is the input parameter list for the HvPostMessage hypercall.
*/
struct hv_post_message {
/** Connection ID */
uint32_t id;
/** Padding */
uint32_t reserved;
/** Type */
uint32_t type;
/** Length of message */
uint32_t len;
/** Message */
uint8_t data[240];
} __attribute__ (( packed ));
/** A received message
*
* This is the HV_MESSAGE structure from the Hypervisor Top-Level
* Functional Specification. The field order given in the
* documentation is incorrect.
*/
struct hv_message {
/** Type */
uint32_t type;
/** Length of message */
uint8_t len;
/** Flags */
uint8_t flags;
/** Padding */
uint16_t reserved;
/** Origin */
uint64_t origin;
/** Message */
uint8_t data[240];
} __attribute__ (( packed ));
/** Signal event */
#define HV_SIGNAL_EVENT 0x005d
/** A signalled event */
struct hv_signal_event {
/** Connection ID */
uint32_t id;
/** Flag number */
uint16_t flag;
/** Reserved */
uint16_t reserved;
} __attribute__ (( packed ));
/** A received event */
struct hv_event {
/** Event flags */
uint8_t flags[256];
} __attribute__ (( packed ));
/** A monitor trigger group
*
* This is the HV_MONITOR_TRIGGER_GROUP structure from the Hypervisor
* Top-Level Functional Specification.
*/
struct hv_monitor_trigger {
/** Pending events */
uint32_t pending;
/** Armed events */
uint32_t armed;
} __attribute__ (( packed ));
/** A monitor parameter set
*
* This is the HV_MONITOR_PARAMETER structure from the Hypervisor
* Top-Level Functional Specification.
*/
struct hv_monitor_parameter {
/** Connection ID */
uint32_t id;
/** Flag number */
uint16_t flag;
/** Reserved */
uint16_t reserved;
} __attribute__ (( packed ));
/** A monitor page
*
* This is the HV_MONITOR_PAGE structure from the Hypervisor Top-Level
* Functional Specification.
*/
struct hv_monitor {
/** Flags */
uint32_t flags;
/** Reserved */
uint8_t reserved_a[4];
/** Trigger groups */
struct hv_monitor_trigger trigger[4];
/** Reserved */
uint8_t reserved_b[536];
/** Latencies */
uint16 latency[4][32];
/** Reserved */
uint8_t reserved_c[256];
/** Parameters */
struct hv_monitor_parameter param[4][32];
/** Reserved */
uint8_t reserved_d[1984];
} __attribute__ (( packed ));
/** A synthetic interrupt controller */
struct hv_synic {
/** Message page */
struct hv_message *message;
/** Event flag page */
struct hv_event *event;
};
/** A message buffer */
union hv_message_buffer {
/** Posted message */
struct hv_post_message posted;
/** Received message */
struct hv_message received;
/** Signalled event */
struct hv_signal_event signalled;
};
/** A Hyper-V hypervisor */
struct hv_hypervisor {
/** Hypercall page */
void *hypercall;
/** Synthetic interrupt controller (SynIC) */
struct hv_synic synic;
/** Message buffer */
union hv_message_buffer *message;
/** Virtual machine bus */
struct vmbus *vmbus;
};
#include <bits/hyperv.h>
/**
* Calculate the number of pages covering an address range
*
* @v data Start of data
* @v len Length of data (must be non-zero)
* @ret pfn_count Number of pages covered
*/
static inline unsigned int hv_pfn_count ( physaddr_t data, size_t len ) {
unsigned int first_pfn = ( data / PAGE_SIZE );
unsigned int last_pfn = ( ( data + len - 1 ) / PAGE_SIZE );
return ( last_pfn - first_pfn + 1 );
}
extern __attribute__ (( sentinel )) int
hv_alloc_pages ( struct hv_hypervisor *hv, ... );
extern __attribute__ (( sentinel )) void
hv_free_pages ( struct hv_hypervisor *hv, ... );
extern void hv_enable_sint ( struct hv_hypervisor *hv, unsigned int sintx );
extern void hv_disable_sint ( struct hv_hypervisor *hv, unsigned int sintx );
extern int hv_post_message ( struct hv_hypervisor *hv, unsigned int id,
unsigned int type, const void *data, size_t len );
extern int hv_wait_for_message ( struct hv_hypervisor *hv, unsigned int sintx );
extern int hv_signal_event ( struct hv_hypervisor *hv, unsigned int id,
unsigned int flag );
#endif /* _IPXE_HYPERV_H */
|
