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 /* SPDX-License-Identifier: GPL-2.0 */
 
 /*
  * This file contains definitions from Hyper-V Hypervisor Top-Level Functional
  * Specification (TLFS):
  * https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/reference/tlfs
  */
 
 #ifndef _ASM_GENERIC_HYPERV_TLFS_H
 #define _ASM_GENERIC_HYPERV_TLFS_H
 
 #include <linux/types.h>
 #include <linux/bits.h>
 #include <linux/time64.h>
 
 /*
  * While not explicitly listed in the TLFS, Hyper-V always runs with a page size
  * of 4096. These definitions are used when communicating with Hyper-V using
  * guest physical pages and guest physical page addresses, since the guest page
  * size may not be 4096 on all architectures.
  */
 #define HV_HYP_PAGE_SHIFT      12
 #define HV_HYP_PAGE_SIZE       BIT(HV_HYP_PAGE_SHIFT)
 #define HV_HYP_PAGE_MASK       (~(HV_HYP_PAGE_SIZE - 1))
 
 /*
  * Hyper-V provides two categories of flags relevant to guest VMs.  The
  * "Features" category indicates specific functionality that is available
  * to guests on this particular instance of Hyper-V. The "Features"
  * are presented in four groups, each of which is 32 bits. The group A
  * and B definitions are common across architectures and are listed here.
  * However, not all flags are relevant on all architectures.
  *
  * Groups C and D vary across architectures and are listed in the
  * architecture specific portion of hyperv-tlfs.h. Some of these flags exist
  * on multiple architectures, but the bit positions are different so they
  * cannot appear in the generic portion of hyperv-tlfs.h.
  *
  * The "Enlightenments" category provides recommendations on whether to use
  * specific enlightenments that are available. The Enlighenments are a single
  * group of 32 bits, but they vary across architectures and are listed in
  * the architecture specific portion of hyperv-tlfs.h.
  */
 
 /*
  * Group A Features.
  */
 
 /* VP Runtime register available */
 #define HV_MSR_VP_RUNTIME_AVAILABLE     BIT(0)
 /* Partition Reference Counter available*/
 #define HV_MSR_TIME_REF_COUNT_AVAILABLE     BIT(1)
 /* Basic SynIC register available */
 #define HV_MSR_SYNIC_AVAILABLE          BIT(2)
 /* Synthetic Timer registers available */
 #define HV_MSR_SYNTIMER_AVAILABLE       BIT(3)
 /* Virtual APIC assist and VP assist page registers available */
 #define HV_MSR_APIC_ACCESS_AVAILABLE        BIT(4)
 /* Hypercall and Guest OS ID registers available*/
 #define HV_MSR_HYPERCALL_AVAILABLE      BIT(5)
 /* Access virtual processor index register available*/
 #define HV_MSR_VP_INDEX_AVAILABLE       BIT(6)
 /* Virtual system reset register available*/
 #define HV_MSR_RESET_AVAILABLE          BIT(7)
 /* Access statistics page registers available */
 #define HV_MSR_STAT_PAGES_AVAILABLE     BIT(8)
 /* Partition reference TSC register is available */
 #define HV_MSR_REFERENCE_TSC_AVAILABLE      BIT(9)
 /* Partition Guest IDLE register is available */
 #define HV_MSR_GUEST_IDLE_AVAILABLE     BIT(10)
 /* Partition local APIC and TSC frequency registers available */
 #define HV_ACCESS_FREQUENCY_MSRS        BIT(11)
 /* AccessReenlightenmentControls privilege */
 #define HV_ACCESS_REENLIGHTENMENT       BIT(13)
 /* AccessTscInvariantControls privilege */
 #define HV_ACCESS_TSC_INVARIANT         BIT(15)
 
 /*
  * Group B features.
  */
 #define HV_CREATE_PARTITIONS            BIT(0)
 #define HV_ACCESS_PARTITION_ID          BIT(1)
 #define HV_ACCESS_MEMORY_POOL           BIT(2)
 #define HV_ADJUST_MESSAGE_BUFFERS       BIT(3)
 #define HV_POST_MESSAGES            BIT(4)
 #define HV_SIGNAL_EVENTS            BIT(5)
 #define HV_CREATE_PORT              BIT(6)
 #define HV_CONNECT_PORT             BIT(7)
 #define HV_ACCESS_STATS             BIT(8)
 #define HV_DEBUGGING                BIT(11)
 #define HV_CPU_MANAGEMENT           BIT(12)
 #define HV_ENABLE_EXTENDED_HYPERCALLS       BIT(20)
 #define HV_ISOLATION                BIT(22)
 
 /*
  * TSC page layout.
  */
 struct ms_hyperv_tsc_page {
     volatile u32 tsc_sequence;
     u32 reserved1;
     volatile u64 tsc_scale;
     volatile s64 tsc_offset;
 } __packed;
 
 /*
  * The guest OS needs to register the guest ID with the hypervisor.
  * The guest ID is a 64 bit entity and the structure of this ID is
  * specified in the Hyper-V specification:
  *
  * msdn.microsoft.com/en-us/library/windows/hardware/ff542653%28v=vs.85%29.aspx
  *
  * While the current guideline does not specify how Linux guest ID(s)
  * need to be generated, our plan is to publish the guidelines for
  * Linux and other guest operating systems that currently are hosted
  * on Hyper-V. The implementation here conforms to this yet
  * unpublished guidelines.
  *
  *
  * Bit(s)
  * 63 - Indicates if the OS is Open Source or not; 1 is Open Source
  * 62:56 - Os Type; Linux is 0x100
  * 55:48 - Distro specific identification
  * 47:16 - Linux kernel version number
  * 15:0  - Distro specific identification
  *
  *
  */
 
 #define HV_LINUX_VENDOR_ID              0x8100
 
 /*
  * Crash notification flags.
  */
 #define HV_CRASH_CTL_CRASH_NOTIFY_MSG       BIT_ULL(62)
 #define HV_CRASH_CTL_CRASH_NOTIFY       BIT_ULL(63)
 
 /* Declare the various hypercall operations. */
 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE  0x0002
 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST   0x0003
 #define HVCALL_NOTIFY_LONG_SPIN_WAIT        0x0008
 #define HVCALL_SEND_IPI             0x000b
 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX   0x0013
 #define HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX    0x0014
 #define HVCALL_SEND_IPI_EX          0x0015
 #define HVCALL_GET_PARTITION_ID         0x0046
 #define HVCALL_DEPOSIT_MEMORY           0x0048
 #define HVCALL_CREATE_VP            0x004e
 #define HVCALL_GET_VP_REGISTERS         0x0050
 #define HVCALL_SET_VP_REGISTERS         0x0051
 #define HVCALL_POST_MESSAGE         0x005c
 #define HVCALL_SIGNAL_EVENT         0x005d
 #define HVCALL_POST_DEBUG_DATA          0x0069
 #define HVCALL_RETRIEVE_DEBUG_DATA      0x006a
 #define HVCALL_RESET_DEBUG_SESSION      0x006b
 #define HVCALL_ADD_LOGICAL_PROCESSOR        0x0076
 #define HVCALL_MAP_DEVICE_INTERRUPT     0x007c
 #define HVCALL_UNMAP_DEVICE_INTERRUPT       0x007d
 #define HVCALL_RETARGET_INTERRUPT       0x007e
 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
 #define HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY 0x00db
 
 /* Extended hypercalls */
 #define HV_EXT_CALL_QUERY_CAPABILITIES      0x8001
 #define HV_EXT_CALL_MEMORY_HEAT_HINT        0x8003
 
 #define HV_FLUSH_ALL_PROCESSORS         BIT(0)
 #define HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES BIT(1)
 #define HV_FLUSH_NON_GLOBAL_MAPPINGS_ONLY   BIT(2)
 #define HV_FLUSH_USE_EXTENDED_RANGE_FORMAT  BIT(3)
 
 /* Extended capability bits */
 #define HV_EXT_CAPABILITY_MEMORY_COLD_DISCARD_HINT BIT(8)
 
 enum HV_GENERIC_SET_FORMAT {
     HV_GENERIC_SET_SPARSE_4K,
     HV_GENERIC_SET_ALL,
 };
 
 #define HV_PARTITION_ID_SELF        ((u64)-1)
 #define HV_VP_INDEX_SELF        ((u32)-2)
 
 #define HV_HYPERCALL_RESULT_MASK    GENMASK_ULL(15, 0)
 #define HV_HYPERCALL_FAST_BIT       BIT(16)
 #define HV_HYPERCALL_VARHEAD_OFFSET 17
 #define HV_HYPERCALL_VARHEAD_MASK   GENMASK_ULL(26, 17)
 #define HV_HYPERCALL_RSVD0_MASK     GENMASK_ULL(31, 27)
 #define HV_HYPERCALL_REP_COMP_OFFSET    32
 #define HV_HYPERCALL_REP_COMP_1     BIT_ULL(32)
 #define HV_HYPERCALL_REP_COMP_MASK  GENMASK_ULL(43, 32)
 #define HV_HYPERCALL_RSVD1_MASK     GENMASK_ULL(47, 44)
 #define HV_HYPERCALL_REP_START_OFFSET   48
 #define HV_HYPERCALL_REP_START_MASK GENMASK_ULL(59, 48)
 #define HV_HYPERCALL_RSVD2_MASK     GENMASK_ULL(63, 60)
 #define HV_HYPERCALL_RSVD_MASK      (HV_HYPERCALL_RSVD0_MASK | \
                      HV_HYPERCALL_RSVD1_MASK | \
                      HV_HYPERCALL_RSVD2_MASK)
 
 /* hypercall status code */
 #define HV_STATUS_SUCCESS           0
 #define HV_STATUS_INVALID_HYPERCALL_CODE    2
 #define HV_STATUS_INVALID_HYPERCALL_INPUT   3
 #define HV_STATUS_INVALID_ALIGNMENT     4
 #define HV_STATUS_INVALID_PARAMETER     5
 #define HV_STATUS_ACCESS_DENIED         6
 #define HV_STATUS_OPERATION_DENIED      8
 #define HV_STATUS_INSUFFICIENT_MEMORY       11
 #define HV_STATUS_INVALID_PORT_ID       17
 #define HV_STATUS_INVALID_CONNECTION_ID     18
 #define HV_STATUS_INSUFFICIENT_BUFFERS      19
 
 /*
  * The Hyper-V TimeRefCount register and the TSC
  * page provide a guest VM clock with 100ns tick rate
  */
 #define HV_CLOCK_HZ (NSEC_PER_SEC/100)
 
 /* Define the number of synthetic interrupt sources. */
 #define HV_SYNIC_SINT_COUNT     (16)
 /* Define the expected SynIC version. */
 #define HV_SYNIC_VERSION_1      (0x1)
 /* Valid SynIC vectors are 16-255. */
 #define HV_SYNIC_FIRST_VALID_VECTOR (16)
 
 #define HV_SYNIC_CONTROL_ENABLE     (1ULL << 0)
 #define HV_SYNIC_SIMP_ENABLE        (1ULL << 0)
 #define HV_SYNIC_SIEFP_ENABLE       (1ULL << 0)
 #define HV_SYNIC_SINT_MASKED        (1ULL << 16)
 #define HV_SYNIC_SINT_AUTO_EOI      (1ULL << 17)
 #define HV_SYNIC_SINT_VECTOR_MASK   (0xFF)
 
 #define HV_SYNIC_STIMER_COUNT       (4)
 
 /* Define synthetic interrupt controller message constants. */
 #define HV_MESSAGE_SIZE         (256)
 #define HV_MESSAGE_PAYLOAD_BYTE_COUNT   (240)
 #define HV_MESSAGE_PAYLOAD_QWORD_COUNT  (30)
 
 /*
  * Define hypervisor message types. Some of the message types
  * are x86/x64 specific, but there's no good way to separate
  * them out into the arch-specific version of hyperv-tlfs.h
  * because C doesn't provide a way to extend enum types.
  * Keeping them all in the arch neutral hyperv-tlfs.h seems
  * the least messy compromise.
  */
 enum hv_message_type {
     HVMSG_NONE          = 0x00000000,
 
     /* Memory access messages. */
     HVMSG_UNMAPPED_GPA      = 0x80000000,
     HVMSG_GPA_INTERCEPT     = 0x80000001,
 
     /* Timer notification messages. */
     HVMSG_TIMER_EXPIRED     = 0x80000010,
 
     /* Error messages. */
     HVMSG_INVALID_VP_REGISTER_VALUE = 0x80000020,
     HVMSG_UNRECOVERABLE_EXCEPTION   = 0x80000021,
     HVMSG_UNSUPPORTED_FEATURE   = 0x80000022,
 
     /* Trace buffer complete messages. */
     HVMSG_EVENTLOG_BUFFERCOMPLETE   = 0x80000040,
 
     /* Platform-specific processor intercept messages. */
     HVMSG_X64_IOPORT_INTERCEPT  = 0x80010000,
     HVMSG_X64_MSR_INTERCEPT     = 0x80010001,
     HVMSG_X64_CPUID_INTERCEPT   = 0x80010002,
     HVMSG_X64_EXCEPTION_INTERCEPT   = 0x80010003,
     HVMSG_X64_APIC_EOI      = 0x80010004,
     HVMSG_X64_LEGACY_FP_ERROR   = 0x80010005
 };
 
 /* Define synthetic interrupt controller message flags. */
 union hv_message_flags {
     __u8 asu8;
     struct {
         __u8 msg_pending:1;
         __u8 reserved:7;
     } __packed;
 };
 
 /* Define port identifier type. */
 union hv_port_id {
     __u32 asu32;
     struct {
         __u32 id:24;
         __u32 reserved:8;
     } __packed u;
 };
 
 /* Define synthetic interrupt controller message header. */
 struct hv_message_header {
     __u32 message_type;
     __u8 payload_size;
     union hv_message_flags message_flags;
     __u8 reserved[2];
     union {
         __u64 sender;
         union hv_port_id port;
     };
 } __packed;
 
 /* Define synthetic interrupt controller message format. */
 struct hv_message {
     struct hv_message_header header;
     union {
         __u64 payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT];
     } u;
 } __packed;
 
 /* Define the synthetic interrupt message page layout. */
 struct hv_message_page {
     struct hv_message sint_message[HV_SYNIC_SINT_COUNT];
 } __packed;
 
 /* Define timer message payload structure. */
 struct hv_timer_message_payload {
     __u32 timer_index;
     __u32 reserved;
     __u64 expiration_time;  /* When the timer expired */
     __u64 delivery_time;    /* When the message was delivered */
 } __packed;
 
 
 /* Define synthetic interrupt controller flag constants. */
 #define HV_EVENT_FLAGS_COUNT        (256 * 8)
 #define HV_EVENT_FLAGS_LONG_COUNT   (256 / sizeof(unsigned long))
 
 /*
  * Synthetic timer configuration.
  */
 union hv_stimer_config {
     u64 as_uint64;
     struct {
         u64 enable:1;
         u64 periodic:1;
         u64 lazy:1;
         u64 auto_enable:1;
         u64 apic_vector:8;
         u64 direct_mode:1;
         u64 reserved_z0:3;
         u64 sintx:4;
         u64 reserved_z1:44;
     } __packed;
 };
 
 
 /* Define the synthetic interrupt controller event flags format. */
 union hv_synic_event_flags {
     unsigned long flags[HV_EVENT_FLAGS_LONG_COUNT];
 };
 
 /* Define SynIC control register. */
 union hv_synic_scontrol {
     u64 as_uint64;
     struct {
         u64 enable:1;
         u64 reserved:63;
     } __packed;
 };
 
 /* Define synthetic interrupt source. */
 union hv_synic_sint {
     u64 as_uint64;
     struct {
         u64 vector:8;
         u64 reserved1:8;
         u64 masked:1;
         u64 auto_eoi:1;
         u64 polling:1;
         u64 reserved2:45;
     } __packed;
 };
 
 /* Define the format of the SIMP register */
 union hv_synic_simp {
     u64 as_uint64;
     struct {
         u64 simp_enabled:1;
         u64 preserved:11;
         u64 base_simp_gpa:52;
     } __packed;
 };
 
 /* Define the format of the SIEFP register */
 union hv_synic_siefp {
     u64 as_uint64;
     struct {
         u64 siefp_enabled:1;
         u64 preserved:11;
         u64 base_siefp_gpa:52;
     } __packed;
 };
 
 struct hv_vpset {
     u64 format;
     u64 valid_bank_mask;
     u64 bank_contents[];
 } __packed;
 
 /* HvCallSendSyntheticClusterIpi hypercall */
 struct hv_send_ipi {
     u32 vector;
     u32 reserved;
     u64 cpu_mask;
 } __packed;
 
 /* HvCallSendSyntheticClusterIpiEx hypercall */
 struct hv_send_ipi_ex {
     u32 vector;
     u32 reserved;
     struct hv_vpset vp_set;
 } __packed;
 
 /* HvFlushGuestPhysicalAddressSpace hypercalls */
 struct hv_guest_mapping_flush {
     u64 address_space;
     u64 flags;
 } __packed;
 
 /*
  *  HV_MAX_FLUSH_PAGES = "additional_pages" + 1. It's limited
  *  by the bitwidth of "additional_pages" in union hv_gpa_page_range.
  */
 #define HV_MAX_FLUSH_PAGES (2048)
 #define HV_GPA_PAGE_RANGE_PAGE_SIZE_2MB     0
 #define HV_GPA_PAGE_RANGE_PAGE_SIZE_1GB     1
 
 /* HvFlushGuestPhysicalAddressList, HvExtCallMemoryHeatHint hypercall */
 union hv_gpa_page_range {
     u64 address_space;
     struct {
         u64 additional_pages:11;
         u64 largepage:1;
         u64 basepfn:52;
     } page;
     struct {
         u64 reserved:12;
         u64 page_size:1;
         u64 reserved1:8;
         u64 base_large_pfn:43;
     };
 };
 
 /*
  * All input flush parameters should be in single page. The max flush
  * count is equal with how many entries of union hv_gpa_page_range can
  * be populated into the input parameter page.
  */
 #define HV_MAX_FLUSH_REP_COUNT ((HV_HYP_PAGE_SIZE - 2 * sizeof(u64)) /  \
                 sizeof(union hv_gpa_page_range))
 
 struct hv_guest_mapping_flush_list {
     u64 address_space;
     u64 flags;
     union hv_gpa_page_range gpa_list[HV_MAX_FLUSH_REP_COUNT];
 };
 
 /* HvFlushVirtualAddressSpace, HvFlushVirtualAddressList hypercalls */
 struct hv_tlb_flush {
     u64 address_space;
     u64 flags;
     u64 processor_mask;
     u64 gva_list[];
 } __packed;
 
 /* HvFlushVirtualAddressSpaceEx, HvFlushVirtualAddressListEx hypercalls */
 struct hv_tlb_flush_ex {
     u64 address_space;
     u64 flags;
     struct hv_vpset hv_vp_set;
     u64 gva_list[];
 } __packed;
 
 /* HvGetPartitionId hypercall (output only) */
 struct hv_get_partition_id {
     u64 partition_id;
 } __packed;
 
 /* HvDepositMemory hypercall */
 struct hv_deposit_memory {
     u64 partition_id;
     u64 gpa_page_list[];
 } __packed;
 
 struct hv_proximity_domain_flags {
     u32 proximity_preferred : 1;
     u32 reserved : 30;
     u32 proximity_info_valid : 1;
 } __packed;
 
 /* Not a union in windows but useful for zeroing */
 union hv_proximity_domain_info {
     struct {
         u32 domain_id;
         struct hv_proximity_domain_flags flags;
     };
     u64 as_uint64;
 } __packed;
 
 struct hv_lp_startup_status {
     u64 hv_status;
     u64 substatus1;
     u64 substatus2;
     u64 substatus3;
     u64 substatus4;
     u64 substatus5;
     u64 substatus6;
 } __packed;
 
 /* HvAddLogicalProcessor hypercall */
 struct hv_add_logical_processor_in {
     u32 lp_index;
     u32 apic_id;
     union hv_proximity_domain_info proximity_domain_info;
     u64 flags;
 } __packed;
 
 struct hv_add_logical_processor_out {
     struct hv_lp_startup_status startup_status;
 } __packed;
 
 enum HV_SUBNODE_TYPE
 {
     HvSubnodeAny = 0,
     HvSubnodeSocket = 1,
     HvSubnodeAmdNode = 2,
     HvSubnodeL3 = 3,
     HvSubnodeCount = 4,
     HvSubnodeInvalid = -1
 };
 
 /* HvCreateVp hypercall */
 struct hv_create_vp {
     u64 partition_id;
     u32 vp_index;
     u8 padding[3];
     u8 subnode_type;
     u64 subnode_id;
     union hv_proximity_domain_info proximity_domain_info;
     u64 flags;
 } __packed;
 
 enum hv_interrupt_source {
     HV_INTERRUPT_SOURCE_MSI = 1, /* MSI and MSI-X */
     HV_INTERRUPT_SOURCE_IOAPIC,
 };
 
 union hv_ioapic_rte {
     u64 as_uint64;
 
     struct {
         u32 vector:8;
         u32 delivery_mode:3;
         u32 destination_mode:1;
         u32 delivery_status:1;
         u32 interrupt_polarity:1;
         u32 remote_irr:1;
         u32 trigger_mode:1;
         u32 interrupt_mask:1;
         u32 reserved1:15;
 
         u32 reserved2:24;
         u32 destination_id:8;
     };
 
     struct {
         u32 low_uint32;
         u32 high_uint32;
     };
 } __packed;
 
 struct hv_interrupt_entry {
     u32 source;
     u32 reserved1;
     union {
         union hv_msi_entry msi_entry;
         union hv_ioapic_rte ioapic_rte;
     };
 } __packed;
 
 /*
  * flags for hv_device_interrupt_target.flags
  */
 #define HV_DEVICE_INTERRUPT_TARGET_MULTICAST        1
 #define HV_DEVICE_INTERRUPT_TARGET_PROCESSOR_SET    2
 
 struct hv_device_interrupt_target {
     u32 vector;
     u32 flags;
     union {
         u64 vp_mask;
         struct hv_vpset vp_set;
     };
 } __packed;
 
 struct hv_retarget_device_interrupt {
     u64 partition_id;       /* use "self" */
     u64 device_id;
     struct hv_interrupt_entry int_entry;
     u64 reserved2;
     struct hv_device_interrupt_target int_target;
 } __packed __aligned(8);
 
 
 /* HvGetVpRegisters hypercall input with variable size reg name list*/
 struct hv_get_vp_registers_input {
     struct {
         u64 partitionid;
         u32 vpindex;
         u8  inputvtl;
         u8  padding[3];
     } header;
     struct input {
         u32 name0;
         u32 name1;
     } element[];
 } __packed;
 
 
 /* HvGetVpRegisters returns an array of these output elements */
 struct hv_get_vp_registers_output {
     union {
         struct {
             u32 a;
             u32 b;
             u32 c;
             u32 d;
         } as32 __packed;
         struct {
             u64 low;
             u64 high;
         } as64 __packed;
     };
 };
 
 /* HvSetVpRegisters hypercall with variable size reg name/value list*/
 struct hv_set_vp_registers_input {
     struct {
         u64 partitionid;
         u32 vpindex;
         u8  inputvtl;
         u8  padding[3];
     } header;
     struct {
         u32 name;
         u32 padding1;
         u64 padding2;
         u64 valuelow;
         u64 valuehigh;
     } element[];
 } __packed;
 
 enum hv_device_type {
     HV_DEVICE_TYPE_LOGICAL = 0,
     HV_DEVICE_TYPE_PCI = 1,
     HV_DEVICE_TYPE_IOAPIC = 2,
     HV_DEVICE_TYPE_ACPI = 3,
 };
 
 typedef u16 hv_pci_rid;
 typedef u16 hv_pci_segment;
 typedef u64 hv_logical_device_id;
 union hv_pci_bdf {
     u16 as_uint16;
 
     struct {
         u8 function:3;
         u8 device:5;
         u8 bus;
     };
 } __packed;
 
 union hv_pci_bus_range {
     u16 as_uint16;
 
     struct {
         u8 subordinate_bus;
         u8 secondary_bus;
     };
 } __packed;
 
 union hv_device_id {
     u64 as_uint64;
 
     struct {
         u64 reserved0:62;
         u64 device_type:2;
     };
 
     /* HV_DEVICE_TYPE_LOGICAL */
     struct {
         u64 id:62;
         u64 device_type:2;
     } logical;
 
     /* HV_DEVICE_TYPE_PCI */
     struct {
         union {
             hv_pci_rid rid;
             union hv_pci_bdf bdf;
         };
 
         hv_pci_segment segment;
         union hv_pci_bus_range shadow_bus_range;
 
         u16 phantom_function_bits:2;
         u16 source_shadow:1;
 
         u16 rsvdz0:11;
         u16 device_type:2;
     } pci;
 
     /* HV_DEVICE_TYPE_IOAPIC */
     struct {
         u8 ioapic_id;
         u8 rsvdz0;
         u16 rsvdz1;
         u16 rsvdz2;
 
         u16 rsvdz3:14;
         u16 device_type:2;
     } ioapic;
 
     /* HV_DEVICE_TYPE_ACPI */
     struct {
         u32 input_mapping_base;
         u32 input_mapping_count:30;
         u32 device_type:2;
     } acpi;
 } __packed;
 
 enum hv_interrupt_trigger_mode {
     HV_INTERRUPT_TRIGGER_MODE_EDGE = 0,
     HV_INTERRUPT_TRIGGER_MODE_LEVEL = 1,
 };
 
 struct hv_device_interrupt_descriptor {
     u32 interrupt_type;
     u32 trigger_mode;
     u32 vector_count;
     u32 reserved;
     struct hv_device_interrupt_target target;
 } __packed;
 
 struct hv_input_map_device_interrupt {
     u64 partition_id;
     u64 device_id;
     u64 flags;
     struct hv_interrupt_entry logical_interrupt_entry;
     struct hv_device_interrupt_descriptor interrupt_descriptor;
 } __packed;
 
 struct hv_output_map_device_interrupt {
     struct hv_interrupt_entry interrupt_entry;
 } __packed;
 
 struct hv_input_unmap_device_interrupt {
     u64 partition_id;
     u64 device_id;
     struct hv_interrupt_entry interrupt_entry;
 } __packed;
 
 #define HV_SOURCE_SHADOW_NONE               0x0
 #define HV_SOURCE_SHADOW_BRIDGE_BUS_RANGE   0x1
 
 /*
  * The whole argument should fit in a page to be able to pass to the hypervisor
  * in one hypercall.
  */
 #define HV_MEMORY_HINT_MAX_GPA_PAGE_RANGES  \
     ((HV_HYP_PAGE_SIZE - sizeof(struct hv_memory_hint)) / \
         sizeof(union hv_gpa_page_range))
 
 /* HvExtCallMemoryHeatHint hypercall */
 #define HV_EXT_MEMORY_HEAT_HINT_TYPE_COLD_DISCARD   2
 struct hv_memory_hint {
     u64 type:2;
     u64 reserved:62;
     union hv_gpa_page_range ranges[];
 } __packed;
 
 #endif

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