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 #define HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY 0x00db 162 163 /* Extended hypercalls */ 164 #define HV_EXT_CALL_QUERY_CAPABILITIES 0x8001 165 #define HV_EXT_CALL_MEMORY_HEAT_HINT 0x8003 166 167 #define HV_FLUSH_ALL_PROCESSORS BIT(0) 168 #define HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES BIT(1) 169 #define HV_FLUSH_NON_GLOBAL_MAPPINGS_ONLY BIT(2) 170 #define HV_FLUSH_USE_EXTENDED_RANGE_FORMAT BIT(3) 171 172 /* Extended capability bits */ 173 #define HV_EXT_CAPABILITY_MEMORY_COLD_DISCARD_HINT BIT(8) 174 175 enum HV_GENERIC_SET_FORMAT { 176 HV_GENERIC_SET_SPARSE_4K, 177 HV_GENERIC_SET_ALL, 178 }; 179 180 #define HV_PARTITION_ID_SELF ((u64)-1) 181 #define HV_VP_INDEX_SELF ((u32)-2) 182 183 #define HV_HYPERCALL_RESULT_MASK GENMASK_ULL(15, 0) 184 #define HV_HYPERCALL_FAST_BIT BIT(16) 185 #define HV_HYPERCALL_VARHEAD_OFFSET 17 186 #define HV_HYPERCALL_REP_COMP_OFFSET 32 187 #define HV_HYPERCALL_REP_COMP_1 BIT_ULL(32) 188 #define HV_HYPERCALL_REP_COMP_MASK GENMASK_ULL(43, 32) 189 #define HV_HYPERCALL_REP_START_OFFSET 48 190 #define HV_HYPERCALL_REP_START_MASK GENMASK_ULL(59, 48) 191 192 /* hypercall status code */ 193 #define HV_STATUS_SUCCESS 0 194 #define HV_STATUS_INVALID_HYPERCALL_CODE 2 195 #define HV_STATUS_INVALID_HYPERCALL_INPUT 3 196 #define HV_STATUS_INVALID_ALIGNMENT 4 197 #define HV_STATUS_INVALID_PARAMETER 5 198 #define HV_STATUS_ACCESS_DENIED 6 199 #define HV_STATUS_OPERATION_DENIED 8 200 #define HV_STATUS_INSUFFICIENT_MEMORY 11 201 #define HV_STATUS_INVALID_PORT_ID 17 202 #define HV_STATUS_INVALID_CONNECTION_ID 18 203 #define HV_STATUS_INSUFFICIENT_BUFFERS 19 204 205 /* 206 * The Hyper-V TimeRefCount register and the TSC 207 * page provide a guest VM clock with 100ns tick rate 208 */ 209 #define HV_CLOCK_HZ (NSEC_PER_SEC/100) 210 211 /* Define the number of synthetic interrupt sources. */ 212 #define HV_SYNIC_SINT_COUNT (16) 213 /* Define the expected SynIC version. */ 214 #define HV_SYNIC_VERSION_1 (0x1) 215 /* Valid SynIC vectors are 16-255. */ 216 #define HV_SYNIC_FIRST_VALID_VECTOR (16) 217 218 #define HV_SYNIC_CONTROL_ENABLE (1ULL << 0) 219 #define HV_SYNIC_SIMP_ENABLE (1ULL << 0) 220 #define HV_SYNIC_SIEFP_ENABLE (1ULL << 0) 221 #define HV_SYNIC_SINT_MASKED (1ULL << 16) 222 #define HV_SYNIC_SINT_AUTO_EOI (1ULL << 17) 223 #define HV_SYNIC_SINT_VECTOR_MASK (0xFF) 224 225 #define HV_SYNIC_STIMER_COUNT (4) 226 227 /* Define synthetic interrupt controller message constants. */ 228 #define HV_MESSAGE_SIZE (256) 229 #define HV_MESSAGE_PAYLOAD_BYTE_COUNT (240) 230 #define HV_MESSAGE_PAYLOAD_QWORD_COUNT (30) 231 232 /* 233 * Define hypervisor message types. Some of the message types 234 * are x86/x64 specific, but there's no good way to separate 235 * them out into the arch-specific version of hyperv-tlfs.h 236 * because C doesn't provide a way to extend enum types. 237 * Keeping them all in the arch neutral hyperv-tlfs.h seems 238 * the least messy compromise. 239 */ 240 enum hv_message_type { 241 HVMSG_NONE = 0x00000000, 242 243 /* Memory access messages. */ 244 HVMSG_UNMAPPED_GPA = 0x80000000, 245 HVMSG_GPA_INTERCEPT = 0x80000001, 246 247 /* Timer notification messages. */ 248 HVMSG_TIMER_EXPIRED = 0x80000010, 249 250 /* Error messages. */ 251 HVMSG_INVALID_VP_REGISTER_VALUE = 0x80000020, 252 HVMSG_UNRECOVERABLE_EXCEPTION = 0x80000021, 253 HVMSG_UNSUPPORTED_FEATURE = 0x80000022, 254 255 /* Trace buffer complete messages. */ 256 HVMSG_EVENTLOG_BUFFERCOMPLETE = 0x80000040, 257 258 /* Platform-specific processor intercept messages. */ 259 HVMSG_X64_IOPORT_INTERCEPT = 0x80010000, 260 HVMSG_X64_MSR_INTERCEPT = 0x80010001, 261 HVMSG_X64_CPUID_INTERCEPT = 0x80010002, 262 HVMSG_X64_EXCEPTION_INTERCEPT = 0x80010003, 263 HVMSG_X64_APIC_EOI = 0x80010004, 264 HVMSG_X64_LEGACY_FP_ERROR = 0x80010005 265 }; 266 267 /* Define synthetic interrupt controller message flags. */ 268 union hv_message_flags { 269 __u8 asu8; 270 struct { 271 __u8 msg_pending:1; 272 __u8 reserved:7; 273 } __packed; 274 }; 275 276 /* Define port identifier type. */ 277 union hv_port_id { 278 __u32 asu32; 279 struct { 280 __u32 id:24; 281 __u32 reserved:8; 282 } __packed u; 283 }; 284 285 /* Define synthetic interrupt controller message header. */ 286 struct hv_message_header { 287 __u32 message_type; 288 __u8 payload_size; 289 union hv_message_flags message_flags; 290 __u8 reserved[2]; 291 union { 292 __u64 sender; 293 union hv_port_id port; 294 }; 295 } __packed; 296 297 /* Define synthetic interrupt controller message format. */ 298 struct hv_message { 299 struct hv_message_header header; 300 union { 301 __u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; 302 } u; 303 } __packed; 304 305 /* Define the synthetic interrupt message page layout. */ 306 struct hv_message_page { 307 struct hv_message sint_message[HV_SYNIC_SINT_COUNT]; 308 } __packed; 309 310 /* Define timer message payload structure. */ 311 struct hv_timer_message_payload { 312 __u32 timer_index; 313 __u32 reserved; 314 __u64 expiration_time; /* When the timer expired */ 315 __u64 delivery_time; /* When the message was delivered */ 316 } __packed; 317 318 319 /* Define synthetic interrupt controller flag constants. */ 320 #define HV_EVENT_FLAGS_COUNT (256 * 8) 321 #define HV_EVENT_FLAGS_LONG_COUNT (256 / sizeof(unsigned long)) 322 323 /* 324 * Synthetic timer configuration. 325 */ 326 union hv_stimer_config { 327 u64 as_uint64; 328 struct { 329 u64 enable:1; 330 u64 periodic:1; 331 u64 lazy:1; 332 u64 auto_enable:1; 333 u64 apic_vector:8; 334 u64 direct_mode:1; 335 u64 reserved_z0:3; 336 u64 sintx:4; 337 u64 reserved_z1:44; 338 } __packed; 339 }; 340 341 342 /* Define the synthetic interrupt controller event flags format. */ 343 union hv_synic_event_flags { 344 unsigned long flags[HV_EVENT_FLAGS_LONG_COUNT]; 345 }; 346 347 /* Define SynIC control register. */ 348 union hv_synic_scontrol { 349 u64 as_uint64; 350 struct { 351 u64 enable:1; 352 u64 reserved:63; 353 } __packed; 354 }; 355 356 /* Define synthetic interrupt source. */ 357 union hv_synic_sint { 358 u64 as_uint64; 359 struct { 360 u64 vector:8; 361 u64 reserved1:8; 362 u64 masked:1; 363 u64 auto_eoi:1; 364 u64 polling:1; 365 u64 reserved2:45; 366 } __packed; 367 }; 368 369 /* Define the format of the SIMP register */ 370 union hv_synic_simp { 371 u64 as_uint64; 372 struct { 373 u64 simp_enabled:1; 374 u64 preserved:11; 375 u64 base_simp_gpa:52; 376 } __packed; 377 }; 378 379 /* Define the format of the SIEFP register */ 380 union hv_synic_siefp { 381 u64 as_uint64; 382 struct { 383 u64 siefp_enabled:1; 384 u64 preserved:11; 385 u64 base_siefp_gpa:52; 386 } __packed; 387 }; 388 389 struct hv_vpset { 390 u64 format; 391 u64 valid_bank_mask; 392 u64 bank_contents[]; 393 } __packed; 394 395 /* HvCallSendSyntheticClusterIpi hypercall */ 396 struct hv_send_ipi { 397 u32 vector; 398 u32 reserved; 399 u64 cpu_mask; 400 } __packed; 401 402 /* HvCallSendSyntheticClusterIpiEx hypercall */ 403 struct hv_send_ipi_ex { 404 u32 vector; 405 u32 reserved; 406 struct hv_vpset vp_set; 407 } __packed; 408 409 /* HvFlushGuestPhysicalAddressSpace hypercalls */ 410 struct hv_guest_mapping_flush { 411 u64 address_space; 412 u64 flags; 413 } __packed; 414 415 /* 416 * HV_MAX_FLUSH_PAGES = "additional_pages" + 1. It's limited 417 * by the bitwidth of "additional_pages" in union hv_gpa_page_range. 418 */ 419 #define HV_MAX_FLUSH_PAGES (2048) 420 #define HV_GPA_PAGE_RANGE_PAGE_SIZE_2MB 0 421 #define HV_GPA_PAGE_RANGE_PAGE_SIZE_1GB 1 422 423 /* HvFlushGuestPhysicalAddressList, HvExtCallMemoryHeatHint hypercall */ 424 union hv_gpa_page_range { 425 u64 address_space; 426 struct { 427 u64 additional_pages:11; 428 u64 largepage:1; 429 u64 basepfn:52; 430 } page; 431 struct { 432 u64 reserved:12; 433 u64 page_size:1; 434 u64 reserved1:8; 435 u64 base_large_pfn:43; 436 }; 437 }; 438 439 /* 440 * All input flush parameters should be in single page. The max flush 441 * count is equal with how many entries of union hv_gpa_page_range can 442 * be populated into the input parameter page. 443 */ 444 #define HV_MAX_FLUSH_REP_COUNT ((HV_HYP_PAGE_SIZE - 2 * sizeof(u64)) / \ 445 sizeof(union hv_gpa_page_range)) 446 447 struct hv_guest_mapping_flush_list { 448 u64 address_space; 449 u64 flags; 450 union hv_gpa_page_range gpa_list[HV_MAX_FLUSH_REP_COUNT]; 451 }; 452 453 /* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */ 454 struct hv_tlb_flush { 455 u64 address_space; 456 u64 flags; 457 u64 processor_mask; 458 u64 gva_list[]; 459 } __packed; 460 461 /* HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressListEx hypercalls */ 462 struct hv_tlb_flush_ex { 463 u64 address_space; 464 u64 flags; 465 struct hv_vpset hv_vp_set; 466 u64 gva_list[]; 467 } __packed; 468 469 /* HvGetPartitionId hypercall (output only) */ 470 struct hv_get_partition_id { 471 u64 partition_id; 472 } __packed; 473 474 /* HvDepositMemory hypercall */ 475 struct hv_deposit_memory { 476 u64 partition_id; 477 u64 gpa_page_list[]; 478 } __packed; 479 480 struct hv_proximity_domain_flags { 481 u32 proximity_preferred : 1; 482 u32 reserved : 30; 483 u32 proximity_info_valid : 1; 484 } __packed; 485 486 /* Not a union in windows but useful for zeroing */ 487 union hv_proximity_domain_info { 488 struct { 489 u32 domain_id; 490 struct hv_proximity_domain_flags flags; 491 }; 492 u64 as_uint64; 493 } __packed; 494 495 struct hv_lp_startup_status { 496 u64 hv_status; 497 u64 substatus1; 498 u64 substatus2; 499 u64 substatus3; 500 u64 substatus4; 501 u64 substatus5; 502 u64 substatus6; 503 } __packed; 504 505 /* HvAddLogicalProcessor hypercall */ 506 struct hv_add_logical_processor_in { 507 u32 lp_index; 508 u32 apic_id; 509 union hv_proximity_domain_info proximity_domain_info; 510 u64 flags; 511 } __packed; 512 513 struct hv_add_logical_processor_out { 514 struct hv_lp_startup_status startup_status; 515 } __packed; 516 517 enum HV_SUBNODE_TYPE 518 { 519 HvSubnodeAny = 0, 520 HvSubnodeSocket = 1, 521 HvSubnodeAmdNode = 2, 522 HvSubnodeL3 = 3, 523 HvSubnodeCount = 4, 524 HvSubnodeInvalid = -1 525 }; 526 527 /* HvCreateVp hypercall */ 528 struct hv_create_vp { 529 u64 partition_id; 530 u32 vp_index; 531 u8 padding[3]; 532 u8 subnode_type; 533 u64 subnode_id; 534 union hv_proximity_domain_info proximity_domain_info; 535 u64 flags; 536 } __packed; 537 538 enum hv_interrupt_source { 539 HV_INTERRUPT_SOURCE_MSI = 1, /* MSI and MSI-X */ 540 HV_INTERRUPT_SOURCE_IOAPIC, 541 }; 542 543 union hv_ioapic_rte { 544 u64 as_uint64; 545 546 struct { 547 u32 vector:8; 548 u32 delivery_mode:3; 549 u32 destination_mode:1; 550 u32 delivery_status:1; 551 u32 interrupt_polarity:1; 552 u32 remote_irr:1; 553 u32 trigger_mode:1; 554 u32 interrupt_mask:1; 555 u32 reserved1:15; 556 557 u32 reserved2:24; 558 u32 destination_id:8; 559 }; 560 561 struct { 562 u32 low_uint32; 563 u32 high_uint32; 564 }; 565 } __packed; 566 567 struct hv_interrupt_entry { 568 u32 source; 569 u32 reserved1; 570 union { 571 union hv_msi_entry msi_entry; 572 union hv_ioapic_rte ioapic_rte; 573 }; 574 } __packed; 575 576 /* 577 * flags for hv_device_interrupt_target.flags 578 */ 579 #define HV_DEVICE_INTERRUPT_TARGET_MULTICAST 1 580 #define HV_DEVICE_INTERRUPT_TARGET_PROCESSOR_SET 2 581 582 struct hv_device_interrupt_target { 583 u32 vector; 584 u32 flags; 585 union { 586 u64 vp_mask; 587 struct hv_vpset vp_set; 588 }; 589 } __packed; 590 591 struct hv_retarget_device_interrupt { 592 u64 partition_id; /* use "self" */ 593 u64 device_id; 594 struct hv_interrupt_entry int_entry; 595 u64 reserved2; 596 struct hv_device_interrupt_target int_target; 597 } __packed __aligned(8); 598 599 600 /* HvGetVpRegisters hypercall input with variable size reg name list*/ 601 struct hv_get_vp_registers_input { 602 struct { 603 u64 partitionid; 604 u32 vpindex; 605 u8 inputvtl; 606 u8 padding[3]; 607 } header; 608 struct input { 609 u32 name0; 610 u32 name1; 611 } element[]; 612 } __packed; 613 614 615 /* HvGetVpRegisters returns an array of these output elements */ 616 struct hv_get_vp_registers_output { 617 union { 618 struct { 619 u32 a; 620 u32 b; 621 u32 c; 622 u32 d; 623 } as32 __packed; 624 struct { 625 u64 low; 626 u64 high; 627 } as64 __packed; 628 }; 629 }; 630 631 /* HvSetVpRegisters hypercall with variable size reg name/value list*/ 632 struct hv_set_vp_registers_input { 633 struct { 634 u64 partitionid; 635 u32 vpindex; 636 u8 inputvtl; 637 u8 padding[3]; 638 } header; 639 struct { 640 u32 name; 641 u32 padding1; 642 u64 padding2; 643 u64 valuelow; 644 u64 valuehigh; 645 } element[]; 646 } __packed; 647 648 enum hv_device_type { 649 HV_DEVICE_TYPE_LOGICAL = 0, 650 HV_DEVICE_TYPE_PCI = 1, 651 HV_DEVICE_TYPE_IOAPIC = 2, 652 HV_DEVICE_TYPE_ACPI = 3, 653 }; 654 655 typedef u16 hv_pci_rid; 656 typedef u16 hv_pci_segment; 657 typedef u64 hv_logical_device_id; 658 union hv_pci_bdf { 659 u16 as_uint16; 660 661 struct { 662 u8 function:3; 663 u8 device:5; 664 u8 bus; 665 }; 666 } __packed; 667 668 union hv_pci_bus_range { 669 u16 as_uint16; 670 671 struct { 672 u8 subordinate_bus; 673 u8 secondary_bus; 674 }; 675 } __packed; 676 677 union hv_device_id { 678 u64 as_uint64; 679 680 struct { 681 u64 reserved0:62; 682 u64 device_type:2; 683 }; 684 685 /* HV_DEVICE_TYPE_LOGICAL */ 686 struct { 687 u64 id:62; 688 u64 device_type:2; 689 } logical; 690 691 /* HV_DEVICE_TYPE_PCI */ 692 struct { 693 union { 694 hv_pci_rid rid; 695 union hv_pci_bdf bdf; 696 }; 697 698 hv_pci_segment segment; 699 union hv_pci_bus_range shadow_bus_range; 700 701 u16 phantom_function_bits:2; 702 u16 source_shadow:1; 703 704 u16 rsvdz0:11; 705 u16 device_type:2; 706 } pci; 707 708 /* HV_DEVICE_TYPE_IOAPIC */ 709 struct { 710 u8 ioapic_id; 711 u8 rsvdz0; 712 u16 rsvdz1; 713 u16 rsvdz2; 714 715 u16 rsvdz3:14; 716 u16 device_type:2; 717 } ioapic; 718 719 /* HV_DEVICE_TYPE_ACPI */ 720 struct { 721 u32 input_mapping_base; 722 u32 input_mapping_count:30; 723 u32 device_type:2; 724 } acpi; 725 } __packed; 726 727 enum hv_interrupt_trigger_mode { 728 HV_INTERRUPT_TRIGGER_MODE_EDGE = 0, 729 HV_INTERRUPT_TRIGGER_MODE_LEVEL = 1, 730 }; 731 732 struct hv_device_interrupt_descriptor { 733 u32 interrupt_type; 734 u32 trigger_mode; 735 u32 vector_count; 736 u32 reserved; 737 struct hv_device_interrupt_target target; 738 } __packed; 739 740 struct hv_input_map_device_interrupt { 741 u64 partition_id; 742 u64 device_id; 743 u64 flags; 744 struct hv_interrupt_entry logical_interrupt_entry; 745 struct hv_device_interrupt_descriptor interrupt_descriptor; 746 } __packed; 747 748 struct hv_output_map_device_interrupt { 749 struct hv_interrupt_entry interrupt_entry; 750 } __packed; 751 752 struct hv_input_unmap_device_interrupt { 753 u64 partition_id; 754 u64 device_id; 755 struct hv_interrupt_entry interrupt_entry; 756 } __packed; 757 758 #define HV_SOURCE_SHADOW_NONE 0x0 759 #define HV_SOURCE_SHADOW_BRIDGE_BUS_RANGE 0x1 760 761 /* 762 * The whole argument should fit in a page to be able to pass to the hypervisor 763 * in one hypercall. 764 */ 765 #define HV_MEMORY_HINT_MAX_GPA_PAGE_RANGES \ 766 ((HV_HYP_PAGE_SIZE - sizeof(struct hv_memory_hint)) / \ 767 sizeof(union hv_gpa_page_range)) 768 769 /* HvExtCallMemoryHeatHint hypercall */ 770 #define HV_EXT_MEMORY_HEAT_HINT_TYPE_COLD_DISCARD 2 771 struct hv_memory_hint { 772 u64 type:2; 773 u64 reserved:62; 774 union hv_gpa_page_range ranges[]; 775 } __packed; 776 777 #endif 778