summaryrefslogtreecommitdiff
path: root/include/asm-generic/hyperv-tlfs.h
blob: 8f97c2927beea1db6896bc5bfff84c710a02b610 (plain)
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
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
/* SPDX-License-Identifier: GPL-2.0 */

/*
 * This file contains definitions from Hyper-V Hypervisor Top-Level Functional
 * Specification (TLFS):
 * https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/reference/tlfs
 */

#ifndef _ASM_GENERIC_HYPERV_TLFS_H
#define _ASM_GENERIC_HYPERV_TLFS_H

#include <linux/types.h>
#include <linux/bits.h>
#include <linux/time64.h>

/*
 * While not explicitly listed in the TLFS, Hyper-V always runs with a page size
 * of 4096. These definitions are used when communicating with Hyper-V using
 * guest physical pages and guest physical page addresses, since the guest page
 * size may not be 4096 on all architectures.
 */
#define HV_HYP_PAGE_SHIFT      12
#define HV_HYP_PAGE_SIZE       BIT(HV_HYP_PAGE_SHIFT)
#define HV_HYP_PAGE_MASK       (~(HV_HYP_PAGE_SIZE - 1))

/*
 * Hyper-V provides two categories of flags relevant to guest VMs.  The
 * "Features" category indicates specific functionality that is available
 * to guests on this particular instance of Hyper-V. The "Features"
 * are presented in four groups, each of which is 32 bits. The group A
 * and B definitions are common across architectures and are listed here.
 * However, not all flags are relevant on all architectures.
 *
 * Groups C and D vary across architectures and are listed in the
 * architecture specific portion of hyperv-tlfs.h. Some of these flags exist
 * on multiple architectures, but the bit positions are different so they
 * cannot appear in the generic portion of hyperv-tlfs.h.
 *
 * The "Enlightenments" category provides recommendations on whether to use
 * specific enlightenments that are available. The Enlighenments are a single
 * group of 32 bits, but they vary across architectures and are listed in
 * the architecture specific portion of hyperv-tlfs.h.
 */

/*
 * Group A Features.
 */

/* VP Runtime register available */
#define HV_MSR_VP_RUNTIME_AVAILABLE		BIT(0)
/* Partition Reference Counter available*/
#define HV_MSR_TIME_REF_COUNT_AVAILABLE		BIT(1)
/* Basic SynIC register available */
#define HV_MSR_SYNIC_AVAILABLE			BIT(2)
/* Synthetic Timer registers available */
#define HV_MSR_SYNTIMER_AVAILABLE		BIT(3)
/* Virtual APIC assist and VP assist page registers available */
#define HV_MSR_APIC_ACCESS_AVAILABLE		BIT(4)
/* Hypercall and Guest OS ID registers available*/
#define HV_MSR_HYPERCALL_AVAILABLE		BIT(5)
/* Access virtual processor index register available*/
#define HV_MSR_VP_INDEX_AVAILABLE		BIT(6)
/* Virtual system reset register available*/
#define HV_MSR_RESET_AVAILABLE			BIT(7)
/* Access statistics page registers available */
#define HV_MSR_STAT_PAGES_AVAILABLE		BIT(8)
/* Partition reference TSC register is available */
#define HV_MSR_REFERENCE_TSC_AVAILABLE		BIT(9)
/* Partition Guest IDLE register is available */
#define HV_MSR_GUEST_IDLE_AVAILABLE		BIT(10)
/* Partition local APIC and TSC frequency registers available */
#define HV_ACCESS_FREQUENCY_MSRS		BIT(11)
/* AccessReenlightenmentControls privilege */
#define HV_ACCESS_REENLIGHTENMENT		BIT(13)
/* AccessTscInvariantControls privilege */
#define HV_ACCESS_TSC_INVARIANT			BIT(15)

/*
 * Group B features.
 */
#define HV_CREATE_PARTITIONS			BIT(0)
#define HV_ACCESS_PARTITION_ID			BIT(1)
#define HV_ACCESS_MEMORY_POOL			BIT(2)
#define HV_ADJUST_MESSAGE_BUFFERS		BIT(3)
#define HV_POST_MESSAGES			BIT(4)
#define HV_SIGNAL_EVENTS			BIT(5)
#define HV_CREATE_PORT				BIT(6)
#define HV_CONNECT_PORT				BIT(7)
#define HV_ACCESS_STATS				BIT(8)
#define HV_DEBUGGING				BIT(11)
#define HV_CPU_MANAGEMENT			BIT(12)
#define HV_ENABLE_EXTENDED_HYPERCALLS		BIT(20)
#define HV_ISOLATION				BIT(22)

/*
 * TSC page layout.
 */
struct ms_hyperv_tsc_page {
	volatile u32 tsc_sequence;
	u32 reserved1;
	volatile u64 tsc_scale;
	volatile s64 tsc_offset;
} __packed;

/*
 * The guest OS needs to register the guest ID with the hypervisor.
 * The guest ID is a 64 bit entity and the structure of this ID is
 * specified in the Hyper-V specification:
 *
 * msdn.microsoft.com/en-us/library/windows/hardware/ff542653%28v=vs.85%29.aspx
 *
 * While the current guideline does not specify how Linux guest ID(s)
 * need to be generated, our plan is to publish the guidelines for
 * Linux and other guest operating systems that currently are hosted
 * on Hyper-V. The implementation here conforms to this yet
 * unpublished guidelines.
 *
 *
 * Bit(s)
 * 63 - Indicates if the OS is Open Source or not; 1 is Open Source
 * 62:56 - Os Type; Linux is 0x100
 * 55:48 - Distro specific identification
 * 47:16 - Linux kernel version number
 * 15:0  - Distro specific identification
 *
 *
 */

#define HV_LINUX_VENDOR_ID              0x8100

/*
 * Crash notification flags.
 */
#define HV_CRASH_CTL_CRASH_NOTIFY_MSG		BIT_ULL(62)
#define HV_CRASH_CTL_CRASH_NOTIFY		BIT_ULL(63)

/* Declare the various hypercall operations. */
#define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE	0x0002
#define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST	0x0003
#define HVCALL_NOTIFY_LONG_SPIN_WAIT		0x0008
#define HVCALL_SEND_IPI				0x000b
#define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX	0x0013
#define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX	0x0014
#define HVCALL_SEND_IPI_EX			0x0015
#define HVCALL_GET_PARTITION_ID			0x0046
#define HVCALL_DEPOSIT_MEMORY			0x0048
#define HVCALL_CREATE_VP			0x004e
#define HVCALL_GET_VP_REGISTERS			0x0050
#define HVCALL_SET_VP_REGISTERS			0x0051
#define HVCALL_POST_MESSAGE			0x005c
#define HVCALL_SIGNAL_EVENT			0x005d
#define HVCALL_POST_DEBUG_DATA			0x0069
#define HVCALL_RETRIEVE_DEBUG_DATA		0x006a
#define HVCALL_RESET_DEBUG_SESSION		0x006b
#define HVCALL_ADD_LOGICAL_PROCESSOR		0x0076
#define HVCALL_MAP_DEVICE_INTERRUPT		0x007c
#define HVCALL_UNMAP_DEVICE_INTERRUPT		0x007d
#define HVCALL_RETARGET_INTERRUPT		0x007e
#define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
#define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
#define HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY 0x00db

/* Extended hypercalls */
#define HV_EXT_CALL_QUERY_CAPABILITIES		0x8001
#define HV_EXT_CALL_MEMORY_HEAT_HINT		0x8003

#define HV_FLUSH_ALL_PROCESSORS			BIT(0)
#define HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES	BIT(1)
#define HV_FLUSH_NON_GLOBAL_MAPPINGS_ONLY	BIT(2)
#define HV_FLUSH_USE_EXTENDED_RANGE_FORMAT	BIT(3)

/* Extended capability bits */
#define HV_EXT_CAPABILITY_MEMORY_COLD_DISCARD_HINT BIT(8)

enum HV_GENERIC_SET_FORMAT {
	HV_GENERIC_SET_SPARSE_4K,
	HV_GENERIC_SET_ALL,
};

#define HV_PARTITION_ID_SELF		((u64)-1)
#define HV_VP_INDEX_SELF		((u32)-2)

#define HV_HYPERCALL_RESULT_MASK	GENMASK_ULL(15, 0)
#define HV_HYPERCALL_FAST_BIT		BIT(16)
#define HV_HYPERCALL_VARHEAD_OFFSET	17
#define HV_HYPERCALL_REP_COMP_OFFSET	32
#define HV_HYPERCALL_REP_COMP_1		BIT_ULL(32)
#define HV_HYPERCALL_REP_COMP_MASK	GENMASK_ULL(43, 32)
#define HV_HYPERCALL_REP_START_OFFSET	48
#define HV_HYPERCALL_REP_START_MASK	GENMASK_ULL(59, 48)

/* hypercall status code */
#define HV_STATUS_SUCCESS			0
#define HV_STATUS_INVALID_HYPERCALL_CODE	2
#define HV_STATUS_INVALID_HYPERCALL_INPUT	3
#define HV_STATUS_INVALID_ALIGNMENT		4
#define HV_STATUS_INVALID_PARAMETER		5
#define HV_STATUS_ACCESS_DENIED			6
#define HV_STATUS_OPERATION_DENIED		8
#define HV_STATUS_INSUFFICIENT_MEMORY		11
#define HV_STATUS_INVALID_PORT_ID		17
#define HV_STATUS_INVALID_CONNECTION_ID		18
#define HV_STATUS_INSUFFICIENT_BUFFERS		19

/*
 * The Hyper-V TimeRefCount register and the TSC
 * page provide a guest VM clock with 100ns tick rate
 */
#define HV_CLOCK_HZ (NSEC_PER_SEC/100)

/* Define the number of synthetic interrupt sources. */
#define HV_SYNIC_SINT_COUNT		(16)
/* Define the expected SynIC version. */
#define HV_SYNIC_VERSION_1		(0x1)
/* Valid SynIC vectors are 16-255. */
#define HV_SYNIC_FIRST_VALID_VECTOR	(16)

#define HV_SYNIC_CONTROL_ENABLE		(1ULL << 0)
#define HV_SYNIC_SIMP_ENABLE		(1ULL << 0)
#define HV_SYNIC_SIEFP_ENABLE		(1ULL << 0)
#define HV_SYNIC_SINT_MASKED		(1ULL << 16)
#define HV_SYNIC_SINT_AUTO_EOI		(1ULL << 17)
#define HV_SYNIC_SINT_VECTOR_MASK	(0xFF)

#define HV_SYNIC_STIMER_COUNT		(4)

/* Define synthetic interrupt controller message constants. */
#define HV_MESSAGE_SIZE			(256)
#define HV_MESSAGE_PAYLOAD_BYTE_COUNT	(240)
#define HV_MESSAGE_PAYLOAD_QWORD_COUNT	(30)

/*
 * Define hypervisor message types. Some of the message types
 * are x86/x64 specific, but there's no good way to separate
 * them out into the arch-specific version of hyperv-tlfs.h
 * because C doesn't provide a way to extend enum types.
 * Keeping them all in the arch neutral hyperv-tlfs.h seems
 * the least messy compromise.
 */
enum hv_message_type {
	HVMSG_NONE			= 0x00000000,

	/* Memory access messages. */
	HVMSG_UNMAPPED_GPA		= 0x80000000,
	HVMSG_GPA_INTERCEPT		= 0x80000001,

	/* Timer notification messages. */
	HVMSG_TIMER_EXPIRED		= 0x80000010,

	/* Error messages. */
	HVMSG_INVALID_VP_REGISTER_VALUE	= 0x80000020,
	HVMSG_UNRECOVERABLE_EXCEPTION	= 0x80000021,
	HVMSG_UNSUPPORTED_FEATURE	= 0x80000022,

	/* Trace buffer complete messages. */
	HVMSG_EVENTLOG_BUFFERCOMPLETE	= 0x80000040,

	/* Platform-specific processor intercept messages. */
	HVMSG_X64_IOPORT_INTERCEPT	= 0x80010000,
	HVMSG_X64_MSR_INTERCEPT		= 0x80010001,
	HVMSG_X64_CPUID_INTERCEPT	= 0x80010002,
	HVMSG_X64_EXCEPTION_INTERCEPT	= 0x80010003,
	HVMSG_X64_APIC_EOI		= 0x80010004,
	HVMSG_X64_LEGACY_FP_ERROR	= 0x80010005
};

/* Define synthetic interrupt controller message flags. */
union hv_message_flags {
	__u8 asu8;
	struct {
		__u8 msg_pending:1;
		__u8 reserved:7;
	} __packed;
};

/* Define port identifier type. */
union hv_port_id {
	__u32 asu32;
	struct {
		__u32 id:24;
		__u32 reserved:8;
	} __packed u;
};

/* Define synthetic interrupt controller message header. */
struct hv_message_header {
	__u32 message_type;
	__u8 payload_size;
	union hv_message_flags message_flags;
	__u8 reserved[2];
	union {
		__u64 sender;
		union hv_port_id port;
	};
} __packed;

/* Define synthetic interrupt controller message format. */
struct hv_message {
	struct hv_message_header header;
	union {
		__u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
	} u;
} __packed;

/* Define the synthetic interrupt message page layout. */
struct hv_message_page {
	struct hv_message sint_message[HV_SYNIC_SINT_COUNT];
} __packed;

/* Define timer message payload structure. */
struct hv_timer_message_payload {
	__u32 timer_index;
	__u32 reserved;
	__u64 expiration_time;	/* When the timer expired */
	__u64 delivery_time;	/* When the message was delivered */
} __packed;


/* Define synthetic interrupt controller flag constants. */
#define HV_EVENT_FLAGS_COUNT		(256 * 8)
#define HV_EVENT_FLAGS_LONG_COUNT	(256 / sizeof(unsigned long))

/*
 * Synthetic timer configuration.
 */
union hv_stimer_config {
	u64 as_uint64;
	struct {
		u64 enable:1;
		u64 periodic:1;
		u64 lazy:1;
		u64 auto_enable:1;
		u64 apic_vector:8;
		u64 direct_mode:1;
		u64 reserved_z0:3;
		u64 sintx:4;
		u64 reserved_z1:44;
	} __packed;
};


/* Define the synthetic interrupt controller event flags format. */
union hv_synic_event_flags {
	unsigned long flags[HV_EVENT_FLAGS_LONG_COUNT];
};

/* Define SynIC control register. */
union hv_synic_scontrol {
	u64 as_uint64;
	struct {
		u64 enable:1;
		u64 reserved:63;
	} __packed;
};

/* Define synthetic interrupt source. */
union hv_synic_sint {
	u64 as_uint64;
	struct {
		u64 vector:8;
		u64 reserved1:8;
		u64 masked:1;
		u64 auto_eoi:1;
		u64 polling:1;
		u64 reserved2:45;
	} __packed;
};

/* Define the format of the SIMP register */
union hv_synic_simp {
	u64 as_uint64;
	struct {
		u64 simp_enabled:1;
		u64 preserved:11;
		u64 base_simp_gpa:52;
	} __packed;
};

/* Define the format of the SIEFP register */
union hv_synic_siefp {
	u64 as_uint64;
	struct {
		u64 siefp_enabled:1;
		u64 preserved:11;
		u64 base_siefp_gpa:52;
	} __packed;
};

struct hv_vpset {
	u64 format;
	u64 valid_bank_mask;
	u64 bank_contents[];
} __packed;

/* HvCallSendSyntheticClusterIpi hypercall */
struct hv_send_ipi {
	u32 vector;
	u32 reserved;
	u64 cpu_mask;
} __packed;

/* HvCallSendSyntheticClusterIpiEx hypercall */
struct hv_send_ipi_ex {
	u32 vector;
	u32 reserved;
	struct hv_vpset vp_set;
} __packed;

/* HvFlushGuestPhysicalAddressSpace hypercalls */
struct hv_guest_mapping_flush {
	u64 address_space;
	u64 flags;
} __packed;

/*
 *  HV_MAX_FLUSH_PAGES = "additional_pages" + 1. It's limited
 *  by the bitwidth of "additional_pages" in union hv_gpa_page_range.
 */
#define HV_MAX_FLUSH_PAGES (2048)
#define HV_GPA_PAGE_RANGE_PAGE_SIZE_2MB		0
#define HV_GPA_PAGE_RANGE_PAGE_SIZE_1GB		1

/* HvFlushGuestPhysicalAddressList, HvExtCallMemoryHeatHint hypercall */
union hv_gpa_page_range {
	u64 address_space;
	struct {
		u64 additional_pages:11;
		u64 largepage:1;
		u64 basepfn:52;
	} page;
	struct {
		u64 reserved:12;
		u64 page_size:1;
		u64 reserved1:8;
		u64 base_large_pfn:43;
	};
};

/*
 * All input flush parameters should be in single page. The max flush
 * count is equal with how many entries of union hv_gpa_page_range can
 * be populated into the input parameter page.
 */
#define HV_MAX_FLUSH_REP_COUNT ((HV_HYP_PAGE_SIZE - 2 * sizeof(u64)) /	\
				sizeof(union hv_gpa_page_range))

struct hv_guest_mapping_flush_list {
	u64 address_space;
	u64 flags;
	union hv_gpa_page_range gpa_list[HV_MAX_FLUSH_REP_COUNT];
};

/* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */
struct hv_tlb_flush {
	u64 address_space;
	u64 flags;
	u64 processor_mask;
	u64 gva_list[];
} __packed;

/* HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressListEx hypercalls */
struct hv_tlb_flush_ex {
	u64 address_space;
	u64 flags;
	struct hv_vpset hv_vp_set;
	u64 gva_list[];
} __packed;

/* HvGetPartitionId hypercall (output only) */
struct hv_get_partition_id {
	u64 partition_id;
} __packed;

/* HvDepositMemory hypercall */
struct hv_deposit_memory {
	u64 partition_id;
	u64 gpa_page_list[];
} __packed;

struct hv_proximity_domain_flags {
	u32 proximity_preferred : 1;
	u32 reserved : 30;
	u32 proximity_info_valid : 1;
} __packed;

/* Not a union in windows but useful for zeroing */
union hv_proximity_domain_info {
	struct {
		u32 domain_id;
		struct hv_proximity_domain_flags flags;
	};
	u64 as_uint64;
} __packed;

struct hv_lp_startup_status {
	u64 hv_status;
	u64 substatus1;
	u64 substatus2;
	u64 substatus3;
	u64 substatus4;
	u64 substatus5;
	u64 substatus6;
} __packed;

/* HvAddLogicalProcessor hypercall */
struct hv_add_logical_processor_in {
	u32 lp_index;
	u32 apic_id;
	union hv_proximity_domain_info proximity_domain_info;
	u64 flags;
} __packed;

struct hv_add_logical_processor_out {
	struct hv_lp_startup_status startup_status;
} __packed;

enum HV_SUBNODE_TYPE
{
    HvSubnodeAny = 0,
    HvSubnodeSocket = 1,
    HvSubnodeAmdNode = 2,
    HvSubnodeL3 = 3,
    HvSubnodeCount = 4,
    HvSubnodeInvalid = -1
};

/* HvCreateVp hypercall */
struct hv_create_vp {
	u64 partition_id;
	u32 vp_index;
	u8 padding[3];
	u8 subnode_type;
	u64 subnode_id;
	union hv_proximity_domain_info proximity_domain_info;
	u64 flags;
} __packed;

enum hv_interrupt_source {
	HV_INTERRUPT_SOURCE_MSI = 1, /* MSI and MSI-X */
	HV_INTERRUPT_SOURCE_IOAPIC,
};

union hv_ioapic_rte {
	u64 as_uint64;

	struct {
		u32 vector:8;
		u32 delivery_mode:3;
		u32 destination_mode:1;
		u32 delivery_status:1;
		u32 interrupt_polarity:1;
		u32 remote_irr:1;
		u32 trigger_mode:1;
		u32 interrupt_mask:1;
		u32 reserved1:15;

		u32 reserved2:24;
		u32 destination_id:8;
	};

	struct {
		u32 low_uint32;
		u32 high_uint32;
	};
} __packed;

struct hv_interrupt_entry {
	u32 source;
	u32 reserved1;
	union {
		union hv_msi_entry msi_entry;
		union hv_ioapic_rte ioapic_rte;
	};
} __packed;

/*
 * flags for hv_device_interrupt_target.flags
 */
#define HV_DEVICE_INTERRUPT_TARGET_MULTICAST		1
#define HV_DEVICE_INTERRUPT_TARGET_PROCESSOR_SET	2

struct hv_device_interrupt_target {
	u32 vector;
	u32 flags;
	union {
		u64 vp_mask;
		struct hv_vpset vp_set;
	};
} __packed;

struct hv_retarget_device_interrupt {
	u64 partition_id;		/* use "self" */
	u64 device_id;
	struct hv_interrupt_entry int_entry;
	u64 reserved2;
	struct hv_device_interrupt_target int_target;
} __packed __aligned(8);


/* HvGetVpRegisters hypercall input with variable size reg name list*/
struct hv_get_vp_registers_input {
	struct {
		u64 partitionid;
		u32 vpindex;
		u8  inputvtl;
		u8  padding[3];
	} header;
	struct input {
		u32 name0;
		u32 name1;
	} element[];
} __packed;


/* HvGetVpRegisters returns an array of these output elements */
struct hv_get_vp_registers_output {
	union {
		struct {
			u32 a;
			u32 b;
			u32 c;
			u32 d;
		} as32 __packed;
		struct {
			u64 low;
			u64 high;
		} as64 __packed;
	};
};

/* HvSetVpRegisters hypercall with variable size reg name/value list*/
struct hv_set_vp_registers_input {
	struct {
		u64 partitionid;
		u32 vpindex;
		u8  inputvtl;
		u8  padding[3];
	} header;
	struct {
		u32 name;
		u32 padding1;
		u64 padding2;
		u64 valuelow;
		u64 valuehigh;
	} element[];
} __packed;

enum hv_device_type {
	HV_DEVICE_TYPE_LOGICAL = 0,
	HV_DEVICE_TYPE_PCI = 1,
	HV_DEVICE_TYPE_IOAPIC = 2,
	HV_DEVICE_TYPE_ACPI = 3,
};

typedef u16 hv_pci_rid;
typedef u16 hv_pci_segment;
typedef u64 hv_logical_device_id;
union hv_pci_bdf {
	u16 as_uint16;

	struct {
		u8 function:3;
		u8 device:5;
		u8 bus;
	};
} __packed;

union hv_pci_bus_range {
	u16 as_uint16;

	struct {
		u8 subordinate_bus;
		u8 secondary_bus;
	};
} __packed;

union hv_device_id {
	u64 as_uint64;

	struct {
		u64 reserved0:62;
		u64 device_type:2;
	};

	/* HV_DEVICE_TYPE_LOGICAL */
	struct {
		u64 id:62;
		u64 device_type:2;
	} logical;

	/* HV_DEVICE_TYPE_PCI */
	struct {
		union {
			hv_pci_rid rid;
			union hv_pci_bdf bdf;
		};

		hv_pci_segment segment;
		union hv_pci_bus_range shadow_bus_range;

		u16 phantom_function_bits:2;
		u16 source_shadow:1;

		u16 rsvdz0:11;
		u16 device_type:2;
	} pci;

	/* HV_DEVICE_TYPE_IOAPIC */
	struct {
		u8 ioapic_id;
		u8 rsvdz0;
		u16 rsvdz1;
		u16 rsvdz2;

		u16 rsvdz3:14;
		u16 device_type:2;
	} ioapic;

	/* HV_DEVICE_TYPE_ACPI */
	struct {
		u32 input_mapping_base;
		u32 input_mapping_count:30;
		u32 device_type:2;
	} acpi;
} __packed;

enum hv_interrupt_trigger_mode {
	HV_INTERRUPT_TRIGGER_MODE_EDGE = 0,
	HV_INTERRUPT_TRIGGER_MODE_LEVEL = 1,
};

struct hv_device_interrupt_descriptor {
	u32 interrupt_type;
	u32 trigger_mode;
	u32 vector_count;
	u32 reserved;
	struct hv_device_interrupt_target target;
} __packed;

struct hv_input_map_device_interrupt {
	u64 partition_id;
	u64 device_id;
	u64 flags;
	struct hv_interrupt_entry logical_interrupt_entry;
	struct hv_device_interrupt_descriptor interrupt_descriptor;
} __packed;

struct hv_output_map_device_interrupt {
	struct hv_interrupt_entry interrupt_entry;
} __packed;

struct hv_input_unmap_device_interrupt {
	u64 partition_id;
	u64 device_id;
	struct hv_interrupt_entry interrupt_entry;
} __packed;

#define HV_SOURCE_SHADOW_NONE               0x0
#define HV_SOURCE_SHADOW_BRIDGE_BUS_RANGE   0x1

/*
 * The whole argument should fit in a page to be able to pass to the hypervisor
 * in one hypercall.
 */
#define HV_MEMORY_HINT_MAX_GPA_PAGE_RANGES  \
	((HV_HYP_PAGE_SIZE - sizeof(struct hv_memory_hint)) / \
		sizeof(union hv_gpa_page_range))

/* HvExtCallMemoryHeatHint hypercall */
#define HV_EXT_MEMORY_HEAT_HINT_TYPE_COLD_DISCARD	2
struct hv_memory_hint {
	u64 type:2;
	u64 reserved:62;
	union hv_gpa_page_range ranges[];
} __packed;

#endif