Merge tag 'hyperv-fixes-signed-20240411' of git://git.kernel.org/pub/scm/linux/kernel...
[sfrench/cifs-2.6.git] / include / asm-generic / hyperv-tlfs.h
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 struct hv_proximity_domain_info {
516         u32 domain_id;
517         struct hv_proximity_domain_flags flags;
518 } __packed;
519
520 struct hv_lp_startup_status {
521         u64 hv_status;
522         u64 substatus1;
523         u64 substatus2;
524         u64 substatus3;
525         u64 substatus4;
526         u64 substatus5;
527         u64 substatus6;
528 } __packed;
529
530 /* HvAddLogicalProcessor hypercall */
531 struct hv_input_add_logical_processor {
532         u32 lp_index;
533         u32 apic_id;
534         struct hv_proximity_domain_info proximity_domain_info;
535 } __packed;
536
537 struct hv_output_add_logical_processor {
538         struct hv_lp_startup_status startup_status;
539 } __packed;
540
541 enum HV_SUBNODE_TYPE
542 {
543     HvSubnodeAny = 0,
544     HvSubnodeSocket = 1,
545     HvSubnodeAmdNode = 2,
546     HvSubnodeL3 = 3,
547     HvSubnodeCount = 4,
548     HvSubnodeInvalid = -1
549 };
550
551 /* HvCreateVp hypercall */
552 struct hv_create_vp {
553         u64 partition_id;
554         u32 vp_index;
555         u8 padding[3];
556         u8 subnode_type;
557         u64 subnode_id;
558         struct hv_proximity_domain_info proximity_domain_info;
559         u64 flags;
560 } __packed;
561
562 enum hv_interrupt_source {
563         HV_INTERRUPT_SOURCE_MSI = 1, /* MSI and MSI-X */
564         HV_INTERRUPT_SOURCE_IOAPIC,
565 };
566
567 union hv_ioapic_rte {
568         u64 as_uint64;
569
570         struct {
571                 u32 vector:8;
572                 u32 delivery_mode:3;
573                 u32 destination_mode:1;
574                 u32 delivery_status:1;
575                 u32 interrupt_polarity:1;
576                 u32 remote_irr:1;
577                 u32 trigger_mode:1;
578                 u32 interrupt_mask:1;
579                 u32 reserved1:15;
580
581                 u32 reserved2:24;
582                 u32 destination_id:8;
583         };
584
585         struct {
586                 u32 low_uint32;
587                 u32 high_uint32;
588         };
589 } __packed;
590
591 struct hv_interrupt_entry {
592         u32 source;
593         u32 reserved1;
594         union {
595                 union hv_msi_entry msi_entry;
596                 union hv_ioapic_rte ioapic_rte;
597         };
598 } __packed;
599
600 /*
601  * flags for hv_device_interrupt_target.flags
602  */
603 #define HV_DEVICE_INTERRUPT_TARGET_MULTICAST            1
604 #define HV_DEVICE_INTERRUPT_TARGET_PROCESSOR_SET        2
605
606 struct hv_device_interrupt_target {
607         u32 vector;
608         u32 flags;
609         union {
610                 u64 vp_mask;
611                 struct hv_vpset vp_set;
612         };
613 } __packed;
614
615 struct hv_retarget_device_interrupt {
616         u64 partition_id;               /* use "self" */
617         u64 device_id;
618         struct hv_interrupt_entry int_entry;
619         u64 reserved2;
620         struct hv_device_interrupt_target int_target;
621 } __packed __aligned(8);
622
623 /*
624  * These Hyper-V registers provide information equivalent to the CPUID
625  * instruction on x86/x64.
626  */
627 #define HV_REGISTER_HYPERVISOR_VERSION          0x00000100 /*CPUID 0x40000002 */
628 #define HV_REGISTER_FEATURES                    0x00000200 /*CPUID 0x40000003 */
629 #define HV_REGISTER_ENLIGHTENMENTS              0x00000201 /*CPUID 0x40000004 */
630
631 /*
632  * Synthetic register definitions equivalent to MSRs on x86/x64
633  */
634 #define HV_REGISTER_GUEST_CRASH_P0      0x00000210
635 #define HV_REGISTER_GUEST_CRASH_P1      0x00000211
636 #define HV_REGISTER_GUEST_CRASH_P2      0x00000212
637 #define HV_REGISTER_GUEST_CRASH_P3      0x00000213
638 #define HV_REGISTER_GUEST_CRASH_P4      0x00000214
639 #define HV_REGISTER_GUEST_CRASH_CTL     0x00000215
640
641 #define HV_REGISTER_GUEST_OS_ID         0x00090002
642 #define HV_REGISTER_VP_INDEX            0x00090003
643 #define HV_REGISTER_TIME_REF_COUNT      0x00090004
644 #define HV_REGISTER_REFERENCE_TSC       0x00090017
645
646 #define HV_REGISTER_SINT0               0x000A0000
647 #define HV_REGISTER_SCONTROL            0x000A0010
648 #define HV_REGISTER_SIEFP               0x000A0012
649 #define HV_REGISTER_SIMP                0x000A0013
650 #define HV_REGISTER_EOM                 0x000A0014
651
652 #define HV_REGISTER_STIMER0_CONFIG      0x000B0000
653 #define HV_REGISTER_STIMER0_COUNT       0x000B0001
654
655 /* HvGetVpRegisters hypercall input with variable size reg name list*/
656 struct hv_get_vp_registers_input {
657         struct {
658                 u64 partitionid;
659                 u32 vpindex;
660                 u8  inputvtl;
661                 u8  padding[3];
662         } header;
663         struct input {
664                 u32 name0;
665                 u32 name1;
666         } element[];
667 } __packed;
668
669 /* HvGetVpRegisters returns an array of these output elements */
670 struct hv_get_vp_registers_output {
671         union {
672                 struct {
673                         u32 a;
674                         u32 b;
675                         u32 c;
676                         u32 d;
677                 } as32 __packed;
678                 struct {
679                         u64 low;
680                         u64 high;
681                 } as64 __packed;
682         };
683 };
684
685 /* HvSetVpRegisters hypercall with variable size reg name/value list*/
686 struct hv_set_vp_registers_input {
687         struct {
688                 u64 partitionid;
689                 u32 vpindex;
690                 u8  inputvtl;
691                 u8  padding[3];
692         } header;
693         struct {
694                 u32 name;
695                 u32 padding1;
696                 u64 padding2;
697                 u64 valuelow;
698                 u64 valuehigh;
699         } element[];
700 } __packed;
701
702 enum hv_device_type {
703         HV_DEVICE_TYPE_LOGICAL = 0,
704         HV_DEVICE_TYPE_PCI = 1,
705         HV_DEVICE_TYPE_IOAPIC = 2,
706         HV_DEVICE_TYPE_ACPI = 3,
707 };
708
709 typedef u16 hv_pci_rid;
710 typedef u16 hv_pci_segment;
711 typedef u64 hv_logical_device_id;
712 union hv_pci_bdf {
713         u16 as_uint16;
714
715         struct {
716                 u8 function:3;
717                 u8 device:5;
718                 u8 bus;
719         };
720 } __packed;
721
722 union hv_pci_bus_range {
723         u16 as_uint16;
724
725         struct {
726                 u8 subordinate_bus;
727                 u8 secondary_bus;
728         };
729 } __packed;
730
731 union hv_device_id {
732         u64 as_uint64;
733
734         struct {
735                 u64 reserved0:62;
736                 u64 device_type:2;
737         };
738
739         /* HV_DEVICE_TYPE_LOGICAL */
740         struct {
741                 u64 id:62;
742                 u64 device_type:2;
743         } logical;
744
745         /* HV_DEVICE_TYPE_PCI */
746         struct {
747                 union {
748                         hv_pci_rid rid;
749                         union hv_pci_bdf bdf;
750                 };
751
752                 hv_pci_segment segment;
753                 union hv_pci_bus_range shadow_bus_range;
754
755                 u16 phantom_function_bits:2;
756                 u16 source_shadow:1;
757
758                 u16 rsvdz0:11;
759                 u16 device_type:2;
760         } pci;
761
762         /* HV_DEVICE_TYPE_IOAPIC */
763         struct {
764                 u8 ioapic_id;
765                 u8 rsvdz0;
766                 u16 rsvdz1;
767                 u16 rsvdz2;
768
769                 u16 rsvdz3:14;
770                 u16 device_type:2;
771         } ioapic;
772
773         /* HV_DEVICE_TYPE_ACPI */
774         struct {
775                 u32 input_mapping_base;
776                 u32 input_mapping_count:30;
777                 u32 device_type:2;
778         } acpi;
779 } __packed;
780
781 enum hv_interrupt_trigger_mode {
782         HV_INTERRUPT_TRIGGER_MODE_EDGE = 0,
783         HV_INTERRUPT_TRIGGER_MODE_LEVEL = 1,
784 };
785
786 struct hv_device_interrupt_descriptor {
787         u32 interrupt_type;
788         u32 trigger_mode;
789         u32 vector_count;
790         u32 reserved;
791         struct hv_device_interrupt_target target;
792 } __packed;
793
794 struct hv_input_map_device_interrupt {
795         u64 partition_id;
796         u64 device_id;
797         u64 flags;
798         struct hv_interrupt_entry logical_interrupt_entry;
799         struct hv_device_interrupt_descriptor interrupt_descriptor;
800 } __packed;
801
802 struct hv_output_map_device_interrupt {
803         struct hv_interrupt_entry interrupt_entry;
804 } __packed;
805
806 struct hv_input_unmap_device_interrupt {
807         u64 partition_id;
808         u64 device_id;
809         struct hv_interrupt_entry interrupt_entry;
810 } __packed;
811
812 #define HV_SOURCE_SHADOW_NONE               0x0
813 #define HV_SOURCE_SHADOW_BRIDGE_BUS_RANGE   0x1
814
815 /*
816  * Version info reported by hypervisor
817  */
818 union hv_hypervisor_version_info {
819         struct {
820                 u32 build_number;
821
822                 u32 minor_version : 16;
823                 u32 major_version : 16;
824
825                 u32 service_pack;
826
827                 u32 service_number : 24;
828                 u32 service_branch : 8;
829         };
830         struct {
831                 u32 eax;
832                 u32 ebx;
833                 u32 ecx;
834                 u32 edx;
835         };
836 };
837
838 /*
839  * The whole argument should fit in a page to be able to pass to the hypervisor
840  * in one hypercall.
841  */
842 #define HV_MEMORY_HINT_MAX_GPA_PAGE_RANGES  \
843         ((HV_HYP_PAGE_SIZE - sizeof(struct hv_memory_hint)) / \
844                 sizeof(union hv_gpa_page_range))
845
846 /* HvExtCallMemoryHeatHint hypercall */
847 #define HV_EXT_MEMORY_HEAT_HINT_TYPE_COLD_DISCARD       2
848 struct hv_memory_hint {
849         u64 type:2;
850         u64 reserved:62;
851         union hv_gpa_page_range ranges[];
852 } __packed;
853
854 /* Data structures for HVCALL_MMIO_READ and HVCALL_MMIO_WRITE */
855 #define HV_HYPERCALL_MMIO_MAX_DATA_LENGTH 64
856
857 struct hv_mmio_read_input {
858         u64 gpa;
859         u32 size;
860         u32 reserved;
861 } __packed;
862
863 struct hv_mmio_read_output {
864         u8 data[HV_HYPERCALL_MMIO_MAX_DATA_LENGTH];
865 } __packed;
866
867 struct hv_mmio_write_input {
868         u64 gpa;
869         u32 size;
870         u32 reserved;
871         u8 data[HV_HYPERCALL_MMIO_MAX_DATA_LENGTH];
872 } __packed;
873
874 #endif