asm-generic/io.h: give stub iounmap() on !MMU same prototype as elsewhere
[platform/kernel/linux-starfive.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 /*
106  * The guest OS needs to register the guest ID with the hypervisor.
107  * The guest ID is a 64 bit entity and the structure of this ID is
108  * specified in the Hyper-V specification:
109  *
110  * msdn.microsoft.com/en-us/library/windows/hardware/ff542653%28v=vs.85%29.aspx
111  *
112  * While the current guideline does not specify how Linux guest ID(s)
113  * need to be generated, our plan is to publish the guidelines for
114  * Linux and other guest operating systems that currently are hosted
115  * on Hyper-V. The implementation here conforms to this yet
116  * unpublished guidelines.
117  *
118  *
119  * Bit(s)
120  * 63 - Indicates if the OS is Open Source or not; 1 is Open Source
121  * 62:56 - Os Type; Linux is 0x100
122  * 55:48 - Distro specific identification
123  * 47:16 - Linux kernel version number
124  * 15:0  - Distro specific identification
125  *
126  *
127  */
128
129 #define HV_LINUX_VENDOR_ID              0x8100
130
131 /*
132  * Crash notification flags.
133  */
134 #define HV_CRASH_CTL_CRASH_NOTIFY_MSG           BIT_ULL(62)
135 #define HV_CRASH_CTL_CRASH_NOTIFY               BIT_ULL(63)
136
137 /* Declare the various hypercall operations. */
138 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE      0x0002
139 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST       0x0003
140 #define HVCALL_NOTIFY_LONG_SPIN_WAIT            0x0008
141 #define HVCALL_SEND_IPI                         0x000b
142 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX   0x0013
143 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX    0x0014
144 #define HVCALL_SEND_IPI_EX                      0x0015
145 #define HVCALL_GET_PARTITION_ID                 0x0046
146 #define HVCALL_DEPOSIT_MEMORY                   0x0048
147 #define HVCALL_CREATE_VP                        0x004e
148 #define HVCALL_GET_VP_REGISTERS                 0x0050
149 #define HVCALL_SET_VP_REGISTERS                 0x0051
150 #define HVCALL_POST_MESSAGE                     0x005c
151 #define HVCALL_SIGNAL_EVENT                     0x005d
152 #define HVCALL_POST_DEBUG_DATA                  0x0069
153 #define HVCALL_RETRIEVE_DEBUG_DATA              0x006a
154 #define HVCALL_RESET_DEBUG_SESSION              0x006b
155 #define HVCALL_ADD_LOGICAL_PROCESSOR            0x0076
156 #define HVCALL_MAP_DEVICE_INTERRUPT             0x007c
157 #define HVCALL_UNMAP_DEVICE_INTERRUPT           0x007d
158 #define HVCALL_RETARGET_INTERRUPT               0x007e
159 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
160 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
161
162 /* Extended hypercalls */
163 #define HV_EXT_CALL_QUERY_CAPABILITIES          0x8001
164 #define HV_EXT_CALL_MEMORY_HEAT_HINT            0x8003
165
166 #define HV_FLUSH_ALL_PROCESSORS                 BIT(0)
167 #define HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES     BIT(1)
168 #define HV_FLUSH_NON_GLOBAL_MAPPINGS_ONLY       BIT(2)
169 #define HV_FLUSH_USE_EXTENDED_RANGE_FORMAT      BIT(3)
170
171 /* Extended capability bits */
172 #define HV_EXT_CAPABILITY_MEMORY_COLD_DISCARD_HINT BIT(8)
173
174 enum HV_GENERIC_SET_FORMAT {
175         HV_GENERIC_SET_SPARSE_4K,
176         HV_GENERIC_SET_ALL,
177 };
178
179 #define HV_PARTITION_ID_SELF            ((u64)-1)
180 #define HV_VP_INDEX_SELF                ((u32)-2)
181
182 #define HV_HYPERCALL_RESULT_MASK        GENMASK_ULL(15, 0)
183 #define HV_HYPERCALL_FAST_BIT           BIT(16)
184 #define HV_HYPERCALL_VARHEAD_OFFSET     17
185 #define HV_HYPERCALL_REP_COMP_OFFSET    32
186 #define HV_HYPERCALL_REP_COMP_1         BIT_ULL(32)
187 #define HV_HYPERCALL_REP_COMP_MASK      GENMASK_ULL(43, 32)
188 #define HV_HYPERCALL_REP_START_OFFSET   48
189 #define HV_HYPERCALL_REP_START_MASK     GENMASK_ULL(59, 48)
190
191 /* hypercall status code */
192 #define HV_STATUS_SUCCESS                       0
193 #define HV_STATUS_INVALID_HYPERCALL_CODE        2
194 #define HV_STATUS_INVALID_HYPERCALL_INPUT       3
195 #define HV_STATUS_INVALID_ALIGNMENT             4
196 #define HV_STATUS_INVALID_PARAMETER             5
197 #define HV_STATUS_ACCESS_DENIED                 6
198 #define HV_STATUS_OPERATION_DENIED              8
199 #define HV_STATUS_INSUFFICIENT_MEMORY           11
200 #define HV_STATUS_INVALID_PORT_ID               17
201 #define HV_STATUS_INVALID_CONNECTION_ID         18
202 #define HV_STATUS_INSUFFICIENT_BUFFERS          19
203
204 /*
205  * The Hyper-V TimeRefCount register and the TSC
206  * page provide a guest VM clock with 100ns tick rate
207  */
208 #define HV_CLOCK_HZ (NSEC_PER_SEC/100)
209
210 /* Define the number of synthetic interrupt sources. */
211 #define HV_SYNIC_SINT_COUNT             (16)
212 /* Define the expected SynIC version. */
213 #define HV_SYNIC_VERSION_1              (0x1)
214 /* Valid SynIC vectors are 16-255. */
215 #define HV_SYNIC_FIRST_VALID_VECTOR     (16)
216
217 #define HV_SYNIC_CONTROL_ENABLE         (1ULL << 0)
218 #define HV_SYNIC_SIMP_ENABLE            (1ULL << 0)
219 #define HV_SYNIC_SIEFP_ENABLE           (1ULL << 0)
220 #define HV_SYNIC_SINT_MASKED            (1ULL << 16)
221 #define HV_SYNIC_SINT_AUTO_EOI          (1ULL << 17)
222 #define HV_SYNIC_SINT_VECTOR_MASK       (0xFF)
223
224 #define HV_SYNIC_STIMER_COUNT           (4)
225
226 /* Define synthetic interrupt controller message constants. */
227 #define HV_MESSAGE_SIZE                 (256)
228 #define HV_MESSAGE_PAYLOAD_BYTE_COUNT   (240)
229 #define HV_MESSAGE_PAYLOAD_QWORD_COUNT  (30)
230
231 /*
232  * Define hypervisor message types. Some of the message types
233  * are x86/x64 specific, but there's no good way to separate
234  * them out into the arch-specific version of hyperv-tlfs.h
235  * because C doesn't provide a way to extend enum types.
236  * Keeping them all in the arch neutral hyperv-tlfs.h seems
237  * the least messy compromise.
238  */
239 enum hv_message_type {
240         HVMSG_NONE                      = 0x00000000,
241
242         /* Memory access messages. */
243         HVMSG_UNMAPPED_GPA              = 0x80000000,
244         HVMSG_GPA_INTERCEPT             = 0x80000001,
245
246         /* Timer notification messages. */
247         HVMSG_TIMER_EXPIRED             = 0x80000010,
248
249         /* Error messages. */
250         HVMSG_INVALID_VP_REGISTER_VALUE = 0x80000020,
251         HVMSG_UNRECOVERABLE_EXCEPTION   = 0x80000021,
252         HVMSG_UNSUPPORTED_FEATURE       = 0x80000022,
253
254         /* Trace buffer complete messages. */
255         HVMSG_EVENTLOG_BUFFERCOMPLETE   = 0x80000040,
256
257         /* Platform-specific processor intercept messages. */
258         HVMSG_X64_IOPORT_INTERCEPT      = 0x80010000,
259         HVMSG_X64_MSR_INTERCEPT         = 0x80010001,
260         HVMSG_X64_CPUID_INTERCEPT       = 0x80010002,
261         HVMSG_X64_EXCEPTION_INTERCEPT   = 0x80010003,
262         HVMSG_X64_APIC_EOI              = 0x80010004,
263         HVMSG_X64_LEGACY_FP_ERROR       = 0x80010005
264 };
265
266 /* Define synthetic interrupt controller message flags. */
267 union hv_message_flags {
268         __u8 asu8;
269         struct {
270                 __u8 msg_pending:1;
271                 __u8 reserved:7;
272         } __packed;
273 };
274
275 /* Define port identifier type. */
276 union hv_port_id {
277         __u32 asu32;
278         struct {
279                 __u32 id:24;
280                 __u32 reserved:8;
281         } __packed u;
282 };
283
284 /* Define synthetic interrupt controller message header. */
285 struct hv_message_header {
286         __u32 message_type;
287         __u8 payload_size;
288         union hv_message_flags message_flags;
289         __u8 reserved[2];
290         union {
291                 __u64 sender;
292                 union hv_port_id port;
293         };
294 } __packed;
295
296 /* Define synthetic interrupt controller message format. */
297 struct hv_message {
298         struct hv_message_header header;
299         union {
300                 __u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
301         } u;
302 } __packed;
303
304 /* Define the synthetic interrupt message page layout. */
305 struct hv_message_page {
306         struct hv_message sint_message[HV_SYNIC_SINT_COUNT];
307 } __packed;
308
309 /* Define timer message payload structure. */
310 struct hv_timer_message_payload {
311         __u32 timer_index;
312         __u32 reserved;
313         __u64 expiration_time;  /* When the timer expired */
314         __u64 delivery_time;    /* When the message was delivered */
315 } __packed;
316
317
318 /* Define synthetic interrupt controller flag constants. */
319 #define HV_EVENT_FLAGS_COUNT            (256 * 8)
320 #define HV_EVENT_FLAGS_LONG_COUNT       (256 / sizeof(unsigned long))
321
322 /*
323  * Synthetic timer configuration.
324  */
325 union hv_stimer_config {
326         u64 as_uint64;
327         struct {
328                 u64 enable:1;
329                 u64 periodic:1;
330                 u64 lazy:1;
331                 u64 auto_enable:1;
332                 u64 apic_vector:8;
333                 u64 direct_mode:1;
334                 u64 reserved_z0:3;
335                 u64 sintx:4;
336                 u64 reserved_z1:44;
337         } __packed;
338 };
339
340
341 /* Define the synthetic interrupt controller event flags format. */
342 union hv_synic_event_flags {
343         unsigned long flags[HV_EVENT_FLAGS_LONG_COUNT];
344 };
345
346 /* Define SynIC control register. */
347 union hv_synic_scontrol {
348         u64 as_uint64;
349         struct {
350                 u64 enable:1;
351                 u64 reserved:63;
352         } __packed;
353 };
354
355 /* Define synthetic interrupt source. */
356 union hv_synic_sint {
357         u64 as_uint64;
358         struct {
359                 u64 vector:8;
360                 u64 reserved1:8;
361                 u64 masked:1;
362                 u64 auto_eoi:1;
363                 u64 polling:1;
364                 u64 reserved2:45;
365         } __packed;
366 };
367
368 /* Define the format of the SIMP register */
369 union hv_synic_simp {
370         u64 as_uint64;
371         struct {
372                 u64 simp_enabled:1;
373                 u64 preserved:11;
374                 u64 base_simp_gpa:52;
375         } __packed;
376 };
377
378 /* Define the format of the SIEFP register */
379 union hv_synic_siefp {
380         u64 as_uint64;
381         struct {
382                 u64 siefp_enabled:1;
383                 u64 preserved:11;
384                 u64 base_siefp_gpa:52;
385         } __packed;
386 };
387
388 struct hv_vpset {
389         u64 format;
390         u64 valid_bank_mask;
391         u64 bank_contents[];
392 } __packed;
393
394 /* HvCallSendSyntheticClusterIpi hypercall */
395 struct hv_send_ipi {
396         u32 vector;
397         u32 reserved;
398         u64 cpu_mask;
399 } __packed;
400
401 /* HvCallSendSyntheticClusterIpiEx hypercall */
402 struct hv_send_ipi_ex {
403         u32 vector;
404         u32 reserved;
405         struct hv_vpset vp_set;
406 } __packed;
407
408 /* HvFlushGuestPhysicalAddressSpace hypercalls */
409 struct hv_guest_mapping_flush {
410         u64 address_space;
411         u64 flags;
412 } __packed;
413
414 /*
415  *  HV_MAX_FLUSH_PAGES = "additional_pages" + 1. It's limited
416  *  by the bitwidth of "additional_pages" in union hv_gpa_page_range.
417  */
418 #define HV_MAX_FLUSH_PAGES (2048)
419 #define HV_GPA_PAGE_RANGE_PAGE_SIZE_2MB         0
420 #define HV_GPA_PAGE_RANGE_PAGE_SIZE_1GB         1
421
422 /* HvFlushGuestPhysicalAddressList, HvExtCallMemoryHeatHint hypercall */
423 union hv_gpa_page_range {
424         u64 address_space;
425         struct {
426                 u64 additional_pages:11;
427                 u64 largepage:1;
428                 u64 basepfn:52;
429         } page;
430         struct {
431                 u64 reserved:12;
432                 u64 page_size:1;
433                 u64 reserved1:8;
434                 u64 base_large_pfn:43;
435         };
436 };
437
438 /*
439  * All input flush parameters should be in single page. The max flush
440  * count is equal with how many entries of union hv_gpa_page_range can
441  * be populated into the input parameter page.
442  */
443 #define HV_MAX_FLUSH_REP_COUNT ((HV_HYP_PAGE_SIZE - 2 * sizeof(u64)) /  \
444                                 sizeof(union hv_gpa_page_range))
445
446 struct hv_guest_mapping_flush_list {
447         u64 address_space;
448         u64 flags;
449         union hv_gpa_page_range gpa_list[HV_MAX_FLUSH_REP_COUNT];
450 };
451
452 /* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */
453 struct hv_tlb_flush {
454         u64 address_space;
455         u64 flags;
456         u64 processor_mask;
457         u64 gva_list[];
458 } __packed;
459
460 /* HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressListEx hypercalls */
461 struct hv_tlb_flush_ex {
462         u64 address_space;
463         u64 flags;
464         struct hv_vpset hv_vp_set;
465         u64 gva_list[];
466 } __packed;
467
468 /* HvGetPartitionId hypercall (output only) */
469 struct hv_get_partition_id {
470         u64 partition_id;
471 } __packed;
472
473 /* HvDepositMemory hypercall */
474 struct hv_deposit_memory {
475         u64 partition_id;
476         u64 gpa_page_list[];
477 } __packed;
478
479 struct hv_proximity_domain_flags {
480         u32 proximity_preferred : 1;
481         u32 reserved : 30;
482         u32 proximity_info_valid : 1;
483 } __packed;
484
485 /* Not a union in windows but useful for zeroing */
486 union hv_proximity_domain_info {
487         struct {
488                 u32 domain_id;
489                 struct hv_proximity_domain_flags flags;
490         };
491         u64 as_uint64;
492 } __packed;
493
494 struct hv_lp_startup_status {
495         u64 hv_status;
496         u64 substatus1;
497         u64 substatus2;
498         u64 substatus3;
499         u64 substatus4;
500         u64 substatus5;
501         u64 substatus6;
502 } __packed;
503
504 /* HvAddLogicalProcessor hypercall */
505 struct hv_add_logical_processor_in {
506         u32 lp_index;
507         u32 apic_id;
508         union hv_proximity_domain_info proximity_domain_info;
509         u64 flags;
510 } __packed;
511
512 struct hv_add_logical_processor_out {
513         struct hv_lp_startup_status startup_status;
514 } __packed;
515
516 enum HV_SUBNODE_TYPE
517 {
518     HvSubnodeAny = 0,
519     HvSubnodeSocket = 1,
520     HvSubnodeAmdNode = 2,
521     HvSubnodeL3 = 3,
522     HvSubnodeCount = 4,
523     HvSubnodeInvalid = -1
524 };
525
526 /* HvCreateVp hypercall */
527 struct hv_create_vp {
528         u64 partition_id;
529         u32 vp_index;
530         u8 padding[3];
531         u8 subnode_type;
532         u64 subnode_id;
533         union hv_proximity_domain_info proximity_domain_info;
534         u64 flags;
535 } __packed;
536
537 enum hv_interrupt_source {
538         HV_INTERRUPT_SOURCE_MSI = 1, /* MSI and MSI-X */
539         HV_INTERRUPT_SOURCE_IOAPIC,
540 };
541
542 union hv_msi_address_register {
543         u32 as_uint32;
544         struct {
545                 u32 reserved1:2;
546                 u32 destination_mode:1;
547                 u32 redirection_hint:1;
548                 u32 reserved2:8;
549                 u32 destination_id:8;
550                 u32 msi_base:12;
551         };
552 } __packed;
553
554 union hv_msi_data_register {
555         u32 as_uint32;
556         struct {
557                 u32 vector:8;
558                 u32 delivery_mode:3;
559                 u32 reserved1:3;
560                 u32 level_assert:1;
561                 u32 trigger_mode:1;
562                 u32 reserved2:16;
563         };
564 } __packed;
565
566 /* HvRetargetDeviceInterrupt hypercall */
567 union hv_msi_entry {
568         u64 as_uint64;
569         struct {
570                 union hv_msi_address_register address;
571                 union hv_msi_data_register data;
572         } __packed;
573 };
574
575 union hv_ioapic_rte {
576         u64 as_uint64;
577
578         struct {
579                 u32 vector:8;
580                 u32 delivery_mode:3;
581                 u32 destination_mode:1;
582                 u32 delivery_status:1;
583                 u32 interrupt_polarity:1;
584                 u32 remote_irr:1;
585                 u32 trigger_mode:1;
586                 u32 interrupt_mask:1;
587                 u32 reserved1:15;
588
589                 u32 reserved2:24;
590                 u32 destination_id:8;
591         };
592
593         struct {
594                 u32 low_uint32;
595                 u32 high_uint32;
596         };
597 } __packed;
598
599 struct hv_interrupt_entry {
600         u32 source;
601         u32 reserved1;
602         union {
603                 union hv_msi_entry msi_entry;
604                 union hv_ioapic_rte ioapic_rte;
605         };
606 } __packed;
607
608 /*
609  * flags for hv_device_interrupt_target.flags
610  */
611 #define HV_DEVICE_INTERRUPT_TARGET_MULTICAST            1
612 #define HV_DEVICE_INTERRUPT_TARGET_PROCESSOR_SET        2
613
614 struct hv_device_interrupt_target {
615         u32 vector;
616         u32 flags;
617         union {
618                 u64 vp_mask;
619                 struct hv_vpset vp_set;
620         };
621 } __packed;
622
623 struct hv_retarget_device_interrupt {
624         u64 partition_id;               /* use "self" */
625         u64 device_id;
626         struct hv_interrupt_entry int_entry;
627         u64 reserved2;
628         struct hv_device_interrupt_target int_target;
629 } __packed __aligned(8);
630
631
632 /* HvGetVpRegisters hypercall input with variable size reg name list*/
633 struct hv_get_vp_registers_input {
634         struct {
635                 u64 partitionid;
636                 u32 vpindex;
637                 u8  inputvtl;
638                 u8  padding[3];
639         } header;
640         struct input {
641                 u32 name0;
642                 u32 name1;
643         } element[];
644 } __packed;
645
646
647 /* HvGetVpRegisters returns an array of these output elements */
648 struct hv_get_vp_registers_output {
649         union {
650                 struct {
651                         u32 a;
652                         u32 b;
653                         u32 c;
654                         u32 d;
655                 } as32 __packed;
656                 struct {
657                         u64 low;
658                         u64 high;
659                 } as64 __packed;
660         };
661 };
662
663 /* HvSetVpRegisters hypercall with variable size reg name/value list*/
664 struct hv_set_vp_registers_input {
665         struct {
666                 u64 partitionid;
667                 u32 vpindex;
668                 u8  inputvtl;
669                 u8  padding[3];
670         } header;
671         struct {
672                 u32 name;
673                 u32 padding1;
674                 u64 padding2;
675                 u64 valuelow;
676                 u64 valuehigh;
677         } element[];
678 } __packed;
679
680 enum hv_device_type {
681         HV_DEVICE_TYPE_LOGICAL = 0,
682         HV_DEVICE_TYPE_PCI = 1,
683         HV_DEVICE_TYPE_IOAPIC = 2,
684         HV_DEVICE_TYPE_ACPI = 3,
685 };
686
687 typedef u16 hv_pci_rid;
688 typedef u16 hv_pci_segment;
689 typedef u64 hv_logical_device_id;
690 union hv_pci_bdf {
691         u16 as_uint16;
692
693         struct {
694                 u8 function:3;
695                 u8 device:5;
696                 u8 bus;
697         };
698 } __packed;
699
700 union hv_pci_bus_range {
701         u16 as_uint16;
702
703         struct {
704                 u8 subordinate_bus;
705                 u8 secondary_bus;
706         };
707 } __packed;
708
709 union hv_device_id {
710         u64 as_uint64;
711
712         struct {
713                 u64 reserved0:62;
714                 u64 device_type:2;
715         };
716
717         /* HV_DEVICE_TYPE_LOGICAL */
718         struct {
719                 u64 id:62;
720                 u64 device_type:2;
721         } logical;
722
723         /* HV_DEVICE_TYPE_PCI */
724         struct {
725                 union {
726                         hv_pci_rid rid;
727                         union hv_pci_bdf bdf;
728                 };
729
730                 hv_pci_segment segment;
731                 union hv_pci_bus_range shadow_bus_range;
732
733                 u16 phantom_function_bits:2;
734                 u16 source_shadow:1;
735
736                 u16 rsvdz0:11;
737                 u16 device_type:2;
738         } pci;
739
740         /* HV_DEVICE_TYPE_IOAPIC */
741         struct {
742                 u8 ioapic_id;
743                 u8 rsvdz0;
744                 u16 rsvdz1;
745                 u16 rsvdz2;
746
747                 u16 rsvdz3:14;
748                 u16 device_type:2;
749         } ioapic;
750
751         /* HV_DEVICE_TYPE_ACPI */
752         struct {
753                 u32 input_mapping_base;
754                 u32 input_mapping_count:30;
755                 u32 device_type:2;
756         } acpi;
757 } __packed;
758
759 enum hv_interrupt_trigger_mode {
760         HV_INTERRUPT_TRIGGER_MODE_EDGE = 0,
761         HV_INTERRUPT_TRIGGER_MODE_LEVEL = 1,
762 };
763
764 struct hv_device_interrupt_descriptor {
765         u32 interrupt_type;
766         u32 trigger_mode;
767         u32 vector_count;
768         u32 reserved;
769         struct hv_device_interrupt_target target;
770 } __packed;
771
772 struct hv_input_map_device_interrupt {
773         u64 partition_id;
774         u64 device_id;
775         u64 flags;
776         struct hv_interrupt_entry logical_interrupt_entry;
777         struct hv_device_interrupt_descriptor interrupt_descriptor;
778 } __packed;
779
780 struct hv_output_map_device_interrupt {
781         struct hv_interrupt_entry interrupt_entry;
782 } __packed;
783
784 struct hv_input_unmap_device_interrupt {
785         u64 partition_id;
786         u64 device_id;
787         struct hv_interrupt_entry interrupt_entry;
788 } __packed;
789
790 #define HV_SOURCE_SHADOW_NONE               0x0
791 #define HV_SOURCE_SHADOW_BRIDGE_BUS_RANGE   0x1
792
793 /*
794  * The whole argument should fit in a page to be able to pass to the hypervisor
795  * in one hypercall.
796  */
797 #define HV_MEMORY_HINT_MAX_GPA_PAGE_RANGES  \
798         ((HV_HYP_PAGE_SIZE - sizeof(struct hv_memory_hint)) / \
799                 sizeof(union hv_gpa_page_range))
800
801 /* HvExtCallMemoryHeatHint hypercall */
802 #define HV_EXT_MEMORY_HEAT_HINT_TYPE_COLD_DISCARD       2
803 struct hv_memory_hint {
804         u64 type:2;
805         u64 reserved:62;
806         union hv_gpa_page_range ranges[];
807 } __packed;
808
809 #endif