1 /* SPDX-License-Identifier: GPL-2.0 */
2 
3 /*
4  * This file contains definitions from Hyper-V Hypervisor Top-Level Functional
5  * Specification (TLFS):
6  * https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/reference/tlfs
7  */
8 
9 #ifndef _ASM_GENERIC_HYPERV_TLFS_H
10 #define _ASM_GENERIC_HYPERV_TLFS_H
11 
12 #include <linux/types.h>
13 #include <linux/bits.h>
14 #include <linux/time64.h>
15 
16 /*
17  * While not explicitly listed in the TLFS, Hyper-V always runs with a page size
18  * of 4096. These definitions are used when communicating with Hyper-V using
19  * guest physical pages and guest physical page addresses, since the guest page
20  * size may not be 4096 on all architectures.
21  */
22 #define HV_HYP_PAGE_SHIFT      12
23 #define HV_HYP_PAGE_SIZE       BIT(HV_HYP_PAGE_SHIFT)
24 #define HV_HYP_PAGE_MASK       (~(HV_HYP_PAGE_SIZE - 1))
25 
26 /*
27  * Hyper-V provides two categories of flags relevant to guest VMs.  The
28  * "Features" category indicates specific functionality that is available
29  * to guests on this particular instance of Hyper-V. The "Features"
30  * are presented in four groups, each of which is 32 bits. The group A
31  * and B definitions are common across architectures and are listed here.
32  * However, not all flags are relevant on all architectures.
33  *
34  * Groups C and D vary across architectures and are listed in the
35  * architecture specific portion of hyperv-tlfs.h. Some of these flags exist
36  * on multiple architectures, but the bit positions are different so they
37  * cannot appear in the generic portion of hyperv-tlfs.h.
38  *
39  * The "Enlightenments" category provides recommendations on whether to use
40  * specific enlightenments that are available. The Enlighenments are a single
41  * group of 32 bits, but they vary across architectures and are listed in
42  * the architecture specific portion of hyperv-tlfs.h.
43  */
44 
45 /*
46  * Group A Features.
47  */
48 
49 /* VP Runtime register available */
50 #define HV_MSR_VP_RUNTIME_AVAILABLE		BIT(0)
51 /* Partition Reference Counter available*/
52 #define HV_MSR_TIME_REF_COUNT_AVAILABLE		BIT(1)
53 /* Basic SynIC register available */
54 #define HV_MSR_SYNIC_AVAILABLE			BIT(2)
55 /* Synthetic Timer registers available */
56 #define HV_MSR_SYNTIMER_AVAILABLE		BIT(3)
57 /* Virtual APIC assist and VP assist page registers available */
58 #define HV_MSR_APIC_ACCESS_AVAILABLE		BIT(4)
59 /* Hypercall and Guest OS ID registers available*/
60 #define HV_MSR_HYPERCALL_AVAILABLE		BIT(5)
61 /* Access virtual processor index register available*/
62 #define HV_MSR_VP_INDEX_AVAILABLE		BIT(6)
63 /* Virtual system reset register available*/
64 #define HV_MSR_RESET_AVAILABLE			BIT(7)
65 /* Access statistics page registers available */
66 #define HV_MSR_STAT_PAGES_AVAILABLE		BIT(8)
67 /* Partition reference TSC register is available */
68 #define HV_MSR_REFERENCE_TSC_AVAILABLE		BIT(9)
69 /* Partition Guest IDLE register is available */
70 #define HV_MSR_GUEST_IDLE_AVAILABLE		BIT(10)
71 /* Partition local APIC and TSC frequency registers available */
72 #define HV_ACCESS_FREQUENCY_MSRS		BIT(11)
73 /* AccessReenlightenmentControls privilege */
74 #define HV_ACCESS_REENLIGHTENMENT		BIT(13)
75 /* AccessTscInvariantControls privilege */
76 #define HV_ACCESS_TSC_INVARIANT			BIT(15)
77 
78 /*
79  * Group B features.
80  */
81 #define HV_CREATE_PARTITIONS			BIT(0)
82 #define HV_ACCESS_PARTITION_ID			BIT(1)
83 #define HV_ACCESS_MEMORY_POOL			BIT(2)
84 #define HV_ADJUST_MESSAGE_BUFFERS		BIT(3)
85 #define HV_POST_MESSAGES			BIT(4)
86 #define HV_SIGNAL_EVENTS			BIT(5)
87 #define HV_CREATE_PORT				BIT(6)
88 #define HV_CONNECT_PORT				BIT(7)
89 #define HV_ACCESS_STATS				BIT(8)
90 #define HV_DEBUGGING				BIT(11)
91 #define HV_CPU_MANAGEMENT			BIT(12)
92 #define HV_ENABLE_EXTENDED_HYPERCALLS		BIT(20)
93 #define HV_ISOLATION				BIT(22)
94 
95 /*
96  * TSC page layout.
97  */
98 struct ms_hyperv_tsc_page {
99 	volatile u32 tsc_sequence;
100 	u32 reserved1;
101 	volatile u64 tsc_scale;
102 	volatile s64 tsc_offset;
103 } __packed;
104 
105 union hv_reference_tsc_msr {
106 	u64 as_uint64;
107 	struct {
108 		u64 enable:1;
109 		u64 reserved:11;
110 		u64 pfn:52;
111 	} __packed;
112 };
113 
114 /*
115  * The guest OS needs to register the guest ID with the hypervisor.
116  * The guest ID is a 64 bit entity and the structure of this ID is
117  * specified in the Hyper-V specification:
118  *
119  * msdn.microsoft.com/en-us/library/windows/hardware/ff542653%28v=vs.85%29.aspx
120  *
121  * While the current guideline does not specify how Linux guest ID(s)
122  * need to be generated, our plan is to publish the guidelines for
123  * Linux and other guest operating systems that currently are hosted
124  * on Hyper-V. The implementation here conforms to this yet
125  * unpublished guidelines.
126  *
127  *
128  * Bit(s)
129  * 63 - Indicates if the OS is Open Source or not; 1 is Open Source
130  * 62:56 - Os Type; Linux is 0x100
131  * 55:48 - Distro specific identification
132  * 47:16 - Linux kernel version number
133  * 15:0  - Distro specific identification
134  *
135  *
136  */
137 
138 #define HV_LINUX_VENDOR_ID              0x8100
139 
140 /*
141  * Crash notification flags.
142  */
143 #define HV_CRASH_CTL_CRASH_NOTIFY_MSG		BIT_ULL(62)
144 #define HV_CRASH_CTL_CRASH_NOTIFY		BIT_ULL(63)
145 
146 /* Declare the various hypercall operations. */
147 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE	0x0002
148 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST	0x0003
149 #define HVCALL_ENABLE_VP_VTL			0x000f
150 #define HVCALL_NOTIFY_LONG_SPIN_WAIT		0x0008
151 #define HVCALL_SEND_IPI				0x000b
152 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX	0x0013
153 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX	0x0014
154 #define HVCALL_SEND_IPI_EX			0x0015
155 #define HVCALL_GET_PARTITION_ID			0x0046
156 #define HVCALL_DEPOSIT_MEMORY			0x0048
157 #define HVCALL_CREATE_VP			0x004e
158 #define HVCALL_GET_VP_REGISTERS			0x0050
159 #define HVCALL_SET_VP_REGISTERS			0x0051
160 #define HVCALL_POST_MESSAGE			0x005c
161 #define HVCALL_SIGNAL_EVENT			0x005d
162 #define HVCALL_POST_DEBUG_DATA			0x0069
163 #define HVCALL_RETRIEVE_DEBUG_DATA		0x006a
164 #define HVCALL_RESET_DEBUG_SESSION		0x006b
165 #define HVCALL_ADD_LOGICAL_PROCESSOR		0x0076
166 #define HVCALL_MAP_DEVICE_INTERRUPT		0x007c
167 #define HVCALL_UNMAP_DEVICE_INTERRUPT		0x007d
168 #define HVCALL_RETARGET_INTERRUPT		0x007e
169 #define HVCALL_START_VP				0x0099
170 #define HVCALL_GET_VP_ID_FROM_APIC_ID		0x009a
171 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
172 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
173 #define HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY 0x00db
174 #define HVCALL_MMIO_READ			0x0106
175 #define HVCALL_MMIO_WRITE			0x0107
176 
177 /* Extended hypercalls */
178 #define HV_EXT_CALL_QUERY_CAPABILITIES		0x8001
179 #define HV_EXT_CALL_MEMORY_HEAT_HINT		0x8003
180 
181 #define HV_FLUSH_ALL_PROCESSORS			BIT(0)
182 #define HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES	BIT(1)
183 #define HV_FLUSH_NON_GLOBAL_MAPPINGS_ONLY	BIT(2)
184 #define HV_FLUSH_USE_EXTENDED_RANGE_FORMAT	BIT(3)
185 
186 /* Extended capability bits */
187 #define HV_EXT_CAPABILITY_MEMORY_COLD_DISCARD_HINT BIT(8)
188 
189 enum HV_GENERIC_SET_FORMAT {
190 	HV_GENERIC_SET_SPARSE_4K,
191 	HV_GENERIC_SET_ALL,
192 };
193 
194 #define HV_PARTITION_ID_SELF		((u64)-1)
195 #define HV_VP_INDEX_SELF		((u32)-2)
196 
197 #define HV_HYPERCALL_RESULT_MASK	GENMASK_ULL(15, 0)
198 #define HV_HYPERCALL_FAST_BIT		BIT(16)
199 #define HV_HYPERCALL_VARHEAD_OFFSET	17
200 #define HV_HYPERCALL_VARHEAD_MASK	GENMASK_ULL(26, 17)
201 #define HV_HYPERCALL_RSVD0_MASK		GENMASK_ULL(31, 27)
202 #define HV_HYPERCALL_NESTED		BIT_ULL(31)
203 #define HV_HYPERCALL_REP_COMP_OFFSET	32
204 #define HV_HYPERCALL_REP_COMP_1		BIT_ULL(32)
205 #define HV_HYPERCALL_REP_COMP_MASK	GENMASK_ULL(43, 32)
206 #define HV_HYPERCALL_RSVD1_MASK		GENMASK_ULL(47, 44)
207 #define HV_HYPERCALL_REP_START_OFFSET	48
208 #define HV_HYPERCALL_REP_START_MASK	GENMASK_ULL(59, 48)
209 #define HV_HYPERCALL_RSVD2_MASK		GENMASK_ULL(63, 60)
210 #define HV_HYPERCALL_RSVD_MASK		(HV_HYPERCALL_RSVD0_MASK | \
211 					 HV_HYPERCALL_RSVD1_MASK | \
212 					 HV_HYPERCALL_RSVD2_MASK)
213 
214 /* hypercall status code */
215 #define HV_STATUS_SUCCESS			0
216 #define HV_STATUS_INVALID_HYPERCALL_CODE	2
217 #define HV_STATUS_INVALID_HYPERCALL_INPUT	3
218 #define HV_STATUS_INVALID_ALIGNMENT		4
219 #define HV_STATUS_INVALID_PARAMETER		5
220 #define HV_STATUS_ACCESS_DENIED			6
221 #define HV_STATUS_OPERATION_DENIED		8
222 #define HV_STATUS_INSUFFICIENT_MEMORY		11
223 #define HV_STATUS_INVALID_PORT_ID		17
224 #define HV_STATUS_INVALID_CONNECTION_ID		18
225 #define HV_STATUS_INSUFFICIENT_BUFFERS		19
226 #define HV_STATUS_TIME_OUT                      120
227 #define HV_STATUS_VTL_ALREADY_ENABLED		134
228 
229 /*
230  * The Hyper-V TimeRefCount register and the TSC
231  * page provide a guest VM clock with 100ns tick rate
232  */
233 #define HV_CLOCK_HZ (NSEC_PER_SEC/100)
234 
235 /* Define the number of synthetic interrupt sources. */
236 #define HV_SYNIC_SINT_COUNT		(16)
237 /* Define the expected SynIC version. */
238 #define HV_SYNIC_VERSION_1		(0x1)
239 /* Valid SynIC vectors are 16-255. */
240 #define HV_SYNIC_FIRST_VALID_VECTOR	(16)
241 
242 #define HV_SYNIC_CONTROL_ENABLE		(1ULL << 0)
243 #define HV_SYNIC_SIMP_ENABLE		(1ULL << 0)
244 #define HV_SYNIC_SIEFP_ENABLE		(1ULL << 0)
245 #define HV_SYNIC_SINT_MASKED		(1ULL << 16)
246 #define HV_SYNIC_SINT_AUTO_EOI		(1ULL << 17)
247 #define HV_SYNIC_SINT_VECTOR_MASK	(0xFF)
248 
249 #define HV_SYNIC_STIMER_COUNT		(4)
250 
251 /* Define synthetic interrupt controller message constants. */
252 #define HV_MESSAGE_SIZE			(256)
253 #define HV_MESSAGE_PAYLOAD_BYTE_COUNT	(240)
254 #define HV_MESSAGE_PAYLOAD_QWORD_COUNT	(30)
255 
256 /*
257  * Define hypervisor message types. Some of the message types
258  * are x86/x64 specific, but there's no good way to separate
259  * them out into the arch-specific version of hyperv-tlfs.h
260  * because C doesn't provide a way to extend enum types.
261  * Keeping them all in the arch neutral hyperv-tlfs.h seems
262  * the least messy compromise.
263  */
264 enum hv_message_type {
265 	HVMSG_NONE			= 0x00000000,
266 
267 	/* Memory access messages. */
268 	HVMSG_UNMAPPED_GPA		= 0x80000000,
269 	HVMSG_GPA_INTERCEPT		= 0x80000001,
270 
271 	/* Timer notification messages. */
272 	HVMSG_TIMER_EXPIRED		= 0x80000010,
273 
274 	/* Error messages. */
275 	HVMSG_INVALID_VP_REGISTER_VALUE	= 0x80000020,
276 	HVMSG_UNRECOVERABLE_EXCEPTION	= 0x80000021,
277 	HVMSG_UNSUPPORTED_FEATURE	= 0x80000022,
278 
279 	/* Trace buffer complete messages. */
280 	HVMSG_EVENTLOG_BUFFERCOMPLETE	= 0x80000040,
281 
282 	/* Platform-specific processor intercept messages. */
283 	HVMSG_X64_IOPORT_INTERCEPT	= 0x80010000,
284 	HVMSG_X64_MSR_INTERCEPT		= 0x80010001,
285 	HVMSG_X64_CPUID_INTERCEPT	= 0x80010002,
286 	HVMSG_X64_EXCEPTION_INTERCEPT	= 0x80010003,
287 	HVMSG_X64_APIC_EOI		= 0x80010004,
288 	HVMSG_X64_LEGACY_FP_ERROR	= 0x80010005
289 };
290 
291 /* Define synthetic interrupt controller message flags. */
292 union hv_message_flags {
293 	__u8 asu8;
294 	struct {
295 		__u8 msg_pending:1;
296 		__u8 reserved:7;
297 	} __packed;
298 };
299 
300 /* Define port identifier type. */
301 union hv_port_id {
302 	__u32 asu32;
303 	struct {
304 		__u32 id:24;
305 		__u32 reserved:8;
306 	} __packed u;
307 };
308 
309 /* Define synthetic interrupt controller message header. */
310 struct hv_message_header {
311 	__u32 message_type;
312 	__u8 payload_size;
313 	union hv_message_flags message_flags;
314 	__u8 reserved[2];
315 	union {
316 		__u64 sender;
317 		union hv_port_id port;
318 	};
319 } __packed;
320 
321 /* Define synthetic interrupt controller message format. */
322 struct hv_message {
323 	struct hv_message_header header;
324 	union {
325 		__u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
326 	} u;
327 } __packed;
328 
329 /* Define the synthetic interrupt message page layout. */
330 struct hv_message_page {
331 	struct hv_message sint_message[HV_SYNIC_SINT_COUNT];
332 } __packed;
333 
334 /* Define timer message payload structure. */
335 struct hv_timer_message_payload {
336 	__u32 timer_index;
337 	__u32 reserved;
338 	__u64 expiration_time;	/* When the timer expired */
339 	__u64 delivery_time;	/* When the message was delivered */
340 } __packed;
341 
342 
343 /* Define synthetic interrupt controller flag constants. */
344 #define HV_EVENT_FLAGS_COUNT		(256 * 8)
345 #define HV_EVENT_FLAGS_LONG_COUNT	(256 / sizeof(unsigned long))
346 
347 /*
348  * Synthetic timer configuration.
349  */
350 union hv_stimer_config {
351 	u64 as_uint64;
352 	struct {
353 		u64 enable:1;
354 		u64 periodic:1;
355 		u64 lazy:1;
356 		u64 auto_enable:1;
357 		u64 apic_vector:8;
358 		u64 direct_mode:1;
359 		u64 reserved_z0:3;
360 		u64 sintx:4;
361 		u64 reserved_z1:44;
362 	} __packed;
363 };
364 
365 
366 /* Define the synthetic interrupt controller event flags format. */
367 union hv_synic_event_flags {
368 	unsigned long flags[HV_EVENT_FLAGS_LONG_COUNT];
369 };
370 
371 /* Define SynIC control register. */
372 union hv_synic_scontrol {
373 	u64 as_uint64;
374 	struct {
375 		u64 enable:1;
376 		u64 reserved:63;
377 	} __packed;
378 };
379 
380 /* Define synthetic interrupt source. */
381 union hv_synic_sint {
382 	u64 as_uint64;
383 	struct {
384 		u64 vector:8;
385 		u64 reserved1:8;
386 		u64 masked:1;
387 		u64 auto_eoi:1;
388 		u64 polling:1;
389 		u64 reserved2:45;
390 	} __packed;
391 };
392 
393 /* Define the format of the SIMP register */
394 union hv_synic_simp {
395 	u64 as_uint64;
396 	struct {
397 		u64 simp_enabled:1;
398 		u64 preserved:11;
399 		u64 base_simp_gpa:52;
400 	} __packed;
401 };
402 
403 /* Define the format of the SIEFP register */
404 union hv_synic_siefp {
405 	u64 as_uint64;
406 	struct {
407 		u64 siefp_enabled:1;
408 		u64 preserved:11;
409 		u64 base_siefp_gpa:52;
410 	} __packed;
411 };
412 
413 struct hv_vpset {
414 	u64 format;
415 	u64 valid_bank_mask;
416 	u64 bank_contents[];
417 } __packed;
418 
419 /* The maximum number of sparse vCPU banks which can be encoded by 'struct hv_vpset' */
420 #define HV_MAX_SPARSE_VCPU_BANKS (64)
421 /* The number of vCPUs in one sparse bank */
422 #define HV_VCPUS_PER_SPARSE_BANK (64)
423 
424 /* HvCallSendSyntheticClusterIpi hypercall */
425 struct hv_send_ipi {
426 	u32 vector;
427 	u32 reserved;
428 	u64 cpu_mask;
429 } __packed;
430 
431 /* HvCallSendSyntheticClusterIpiEx hypercall */
432 struct hv_send_ipi_ex {
433 	u32 vector;
434 	u32 reserved;
435 	struct hv_vpset vp_set;
436 } __packed;
437 
438 /* HvFlushGuestPhysicalAddressSpace hypercalls */
439 struct hv_guest_mapping_flush {
440 	u64 address_space;
441 	u64 flags;
442 } __packed;
443 
444 /*
445  *  HV_MAX_FLUSH_PAGES = "additional_pages" + 1. It's limited
446  *  by the bitwidth of "additional_pages" in union hv_gpa_page_range.
447  */
448 #define HV_MAX_FLUSH_PAGES (2048)
449 #define HV_GPA_PAGE_RANGE_PAGE_SIZE_2MB		0
450 #define HV_GPA_PAGE_RANGE_PAGE_SIZE_1GB		1
451 
452 /* HvFlushGuestPhysicalAddressList, HvExtCallMemoryHeatHint hypercall */
453 union hv_gpa_page_range {
454 	u64 address_space;
455 	struct {
456 		u64 additional_pages:11;
457 		u64 largepage:1;
458 		u64 basepfn:52;
459 	} page;
460 	struct {
461 		u64 reserved:12;
462 		u64 page_size:1;
463 		u64 reserved1:8;
464 		u64 base_large_pfn:43;
465 	};
466 };
467 
468 /*
469  * All input flush parameters should be in single page. The max flush
470  * count is equal with how many entries of union hv_gpa_page_range can
471  * be populated into the input parameter page.
472  */
473 #define HV_MAX_FLUSH_REP_COUNT ((HV_HYP_PAGE_SIZE - 2 * sizeof(u64)) /	\
474 				sizeof(union hv_gpa_page_range))
475 
476 struct hv_guest_mapping_flush_list {
477 	u64 address_space;
478 	u64 flags;
479 	union hv_gpa_page_range gpa_list[HV_MAX_FLUSH_REP_COUNT];
480 };
481 
482 /* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */
483 struct hv_tlb_flush {
484 	u64 address_space;
485 	u64 flags;
486 	u64 processor_mask;
487 	u64 gva_list[];
488 } __packed;
489 
490 /* HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressListEx hypercalls */
491 struct hv_tlb_flush_ex {
492 	u64 address_space;
493 	u64 flags;
494 	struct hv_vpset hv_vp_set;
495 	u64 gva_list[];
496 } __packed;
497 
498 /* HvGetPartitionId hypercall (output only) */
499 struct hv_get_partition_id {
500 	u64 partition_id;
501 } __packed;
502 
503 /* HvDepositMemory hypercall */
504 struct hv_deposit_memory {
505 	u64 partition_id;
506 	u64 gpa_page_list[];
507 } __packed;
508 
509 struct hv_proximity_domain_flags {
510 	u32 proximity_preferred : 1;
511 	u32 reserved : 30;
512 	u32 proximity_info_valid : 1;
513 } __packed;
514 
515 /* Not a union in windows but useful for zeroing */
516 union hv_proximity_domain_info {
517 	struct {
518 		u32 domain_id;
519 		struct hv_proximity_domain_flags flags;
520 	};
521 	u64 as_uint64;
522 } __packed;
523 
524 struct hv_lp_startup_status {
525 	u64 hv_status;
526 	u64 substatus1;
527 	u64 substatus2;
528 	u64 substatus3;
529 	u64 substatus4;
530 	u64 substatus5;
531 	u64 substatus6;
532 } __packed;
533 
534 /* HvAddLogicalProcessor hypercall */
535 struct hv_add_logical_processor_in {
536 	u32 lp_index;
537 	u32 apic_id;
538 	union hv_proximity_domain_info proximity_domain_info;
539 	u64 flags;
540 } __packed;
541 
542 struct hv_add_logical_processor_out {
543 	struct hv_lp_startup_status startup_status;
544 } __packed;
545 
546 enum HV_SUBNODE_TYPE
547 {
548     HvSubnodeAny = 0,
549     HvSubnodeSocket = 1,
550     HvSubnodeAmdNode = 2,
551     HvSubnodeL3 = 3,
552     HvSubnodeCount = 4,
553     HvSubnodeInvalid = -1
554 };
555 
556 /* HvCreateVp hypercall */
557 struct hv_create_vp {
558 	u64 partition_id;
559 	u32 vp_index;
560 	u8 padding[3];
561 	u8 subnode_type;
562 	u64 subnode_id;
563 	union hv_proximity_domain_info proximity_domain_info;
564 	u64 flags;
565 } __packed;
566 
567 enum hv_interrupt_source {
568 	HV_INTERRUPT_SOURCE_MSI = 1, /* MSI and MSI-X */
569 	HV_INTERRUPT_SOURCE_IOAPIC,
570 };
571 
572 union hv_ioapic_rte {
573 	u64 as_uint64;
574 
575 	struct {
576 		u32 vector:8;
577 		u32 delivery_mode:3;
578 		u32 destination_mode:1;
579 		u32 delivery_status:1;
580 		u32 interrupt_polarity:1;
581 		u32 remote_irr:1;
582 		u32 trigger_mode:1;
583 		u32 interrupt_mask:1;
584 		u32 reserved1:15;
585 
586 		u32 reserved2:24;
587 		u32 destination_id:8;
588 	};
589 
590 	struct {
591 		u32 low_uint32;
592 		u32 high_uint32;
593 	};
594 } __packed;
595 
596 struct hv_interrupt_entry {
597 	u32 source;
598 	u32 reserved1;
599 	union {
600 		union hv_msi_entry msi_entry;
601 		union hv_ioapic_rte ioapic_rte;
602 	};
603 } __packed;
604 
605 /*
606  * flags for hv_device_interrupt_target.flags
607  */
608 #define HV_DEVICE_INTERRUPT_TARGET_MULTICAST		1
609 #define HV_DEVICE_INTERRUPT_TARGET_PROCESSOR_SET	2
610 
611 struct hv_device_interrupt_target {
612 	u32 vector;
613 	u32 flags;
614 	union {
615 		u64 vp_mask;
616 		struct hv_vpset vp_set;
617 	};
618 } __packed;
619 
620 struct hv_retarget_device_interrupt {
621 	u64 partition_id;		/* use "self" */
622 	u64 device_id;
623 	struct hv_interrupt_entry int_entry;
624 	u64 reserved2;
625 	struct hv_device_interrupt_target int_target;
626 } __packed __aligned(8);
627 
628 
629 /* HvGetVpRegisters hypercall input with variable size reg name list*/
630 struct hv_get_vp_registers_input {
631 	struct {
632 		u64 partitionid;
633 		u32 vpindex;
634 		u8  inputvtl;
635 		u8  padding[3];
636 	} header;
637 	struct input {
638 		u32 name0;
639 		u32 name1;
640 	} element[];
641 } __packed;
642 
643 
644 /* HvGetVpRegisters returns an array of these output elements */
645 struct hv_get_vp_registers_output {
646 	union {
647 		struct {
648 			u32 a;
649 			u32 b;
650 			u32 c;
651 			u32 d;
652 		} as32 __packed;
653 		struct {
654 			u64 low;
655 			u64 high;
656 		} as64 __packed;
657 	};
658 };
659 
660 /* HvSetVpRegisters hypercall with variable size reg name/value list*/
661 struct hv_set_vp_registers_input {
662 	struct {
663 		u64 partitionid;
664 		u32 vpindex;
665 		u8  inputvtl;
666 		u8  padding[3];
667 	} header;
668 	struct {
669 		u32 name;
670 		u32 padding1;
671 		u64 padding2;
672 		u64 valuelow;
673 		u64 valuehigh;
674 	} element[];
675 } __packed;
676 
677 enum hv_device_type {
678 	HV_DEVICE_TYPE_LOGICAL = 0,
679 	HV_DEVICE_TYPE_PCI = 1,
680 	HV_DEVICE_TYPE_IOAPIC = 2,
681 	HV_DEVICE_TYPE_ACPI = 3,
682 };
683 
684 typedef u16 hv_pci_rid;
685 typedef u16 hv_pci_segment;
686 typedef u64 hv_logical_device_id;
687 union hv_pci_bdf {
688 	u16 as_uint16;
689 
690 	struct {
691 		u8 function:3;
692 		u8 device:5;
693 		u8 bus;
694 	};
695 } __packed;
696 
697 union hv_pci_bus_range {
698 	u16 as_uint16;
699 
700 	struct {
701 		u8 subordinate_bus;
702 		u8 secondary_bus;
703 	};
704 } __packed;
705 
706 union hv_device_id {
707 	u64 as_uint64;
708 
709 	struct {
710 		u64 reserved0:62;
711 		u64 device_type:2;
712 	};
713 
714 	/* HV_DEVICE_TYPE_LOGICAL */
715 	struct {
716 		u64 id:62;
717 		u64 device_type:2;
718 	} logical;
719 
720 	/* HV_DEVICE_TYPE_PCI */
721 	struct {
722 		union {
723 			hv_pci_rid rid;
724 			union hv_pci_bdf bdf;
725 		};
726 
727 		hv_pci_segment segment;
728 		union hv_pci_bus_range shadow_bus_range;
729 
730 		u16 phantom_function_bits:2;
731 		u16 source_shadow:1;
732 
733 		u16 rsvdz0:11;
734 		u16 device_type:2;
735 	} pci;
736 
737 	/* HV_DEVICE_TYPE_IOAPIC */
738 	struct {
739 		u8 ioapic_id;
740 		u8 rsvdz0;
741 		u16 rsvdz1;
742 		u16 rsvdz2;
743 
744 		u16 rsvdz3:14;
745 		u16 device_type:2;
746 	} ioapic;
747 
748 	/* HV_DEVICE_TYPE_ACPI */
749 	struct {
750 		u32 input_mapping_base;
751 		u32 input_mapping_count:30;
752 		u32 device_type:2;
753 	} acpi;
754 } __packed;
755 
756 enum hv_interrupt_trigger_mode {
757 	HV_INTERRUPT_TRIGGER_MODE_EDGE = 0,
758 	HV_INTERRUPT_TRIGGER_MODE_LEVEL = 1,
759 };
760 
761 struct hv_device_interrupt_descriptor {
762 	u32 interrupt_type;
763 	u32 trigger_mode;
764 	u32 vector_count;
765 	u32 reserved;
766 	struct hv_device_interrupt_target target;
767 } __packed;
768 
769 struct hv_input_map_device_interrupt {
770 	u64 partition_id;
771 	u64 device_id;
772 	u64 flags;
773 	struct hv_interrupt_entry logical_interrupt_entry;
774 	struct hv_device_interrupt_descriptor interrupt_descriptor;
775 } __packed;
776 
777 struct hv_output_map_device_interrupt {
778 	struct hv_interrupt_entry interrupt_entry;
779 } __packed;
780 
781 struct hv_input_unmap_device_interrupt {
782 	u64 partition_id;
783 	u64 device_id;
784 	struct hv_interrupt_entry interrupt_entry;
785 } __packed;
786 
787 #define HV_SOURCE_SHADOW_NONE               0x0
788 #define HV_SOURCE_SHADOW_BRIDGE_BUS_RANGE   0x1
789 
790 /*
791  * The whole argument should fit in a page to be able to pass to the hypervisor
792  * in one hypercall.
793  */
794 #define HV_MEMORY_HINT_MAX_GPA_PAGE_RANGES  \
795 	((HV_HYP_PAGE_SIZE - sizeof(struct hv_memory_hint)) / \
796 		sizeof(union hv_gpa_page_range))
797 
798 /* HvExtCallMemoryHeatHint hypercall */
799 #define HV_EXT_MEMORY_HEAT_HINT_TYPE_COLD_DISCARD	2
800 struct hv_memory_hint {
801 	u64 type:2;
802 	u64 reserved:62;
803 	union hv_gpa_page_range ranges[];
804 } __packed;
805 
806 /* Data structures for HVCALL_MMIO_READ and HVCALL_MMIO_WRITE */
807 #define HV_HYPERCALL_MMIO_MAX_DATA_LENGTH 64
808 
809 struct hv_mmio_read_input {
810 	u64 gpa;
811 	u32 size;
812 	u32 reserved;
813 } __packed;
814 
815 struct hv_mmio_read_output {
816 	u8 data[HV_HYPERCALL_MMIO_MAX_DATA_LENGTH];
817 } __packed;
818 
819 struct hv_mmio_write_input {
820 	u64 gpa;
821 	u32 size;
822 	u32 reserved;
823 	u8 data[HV_HYPERCALL_MMIO_MAX_DATA_LENGTH];
824 } __packed;
825 
826 #endif
827