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#include "types.h" // u32
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* ACPI 2.0 Generic Address Space definition.
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struct acpi_20_generic_address {
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u8 register_bit_width;
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u8 register_bit_offset;
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#define RSDP_SIGNATURE 0x2052545020445352LL // "RSD PTR "
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struct rsdp_descriptor { /* Root System Descriptor Pointer */
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u64 signature; /* ACPI signature, contains "RSD PTR " */
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u8 checksum; /* To make sum of struct == 0 */
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u8 oem_id [6]; /* OEM identification */
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u8 revision; /* Must be 0 for 1.0, 2 for 2.0 */
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u32 rsdt_physical_address; /* 32-bit physical address of RSDT */
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u32 length; /* XSDT Length in bytes including hdr */
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u64 xsdt_physical_address; /* 64-bit physical address of XSDT */
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u8 extended_checksum; /* Checksum of entire table */
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u8 reserved [3]; /* Reserved field must be 0 */
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/* Table structure from Linux kernel (the ACPI tables are under the
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#define ACPI_TABLE_HEADER_DEF /* ACPI common table header */ \
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u32 signature; /* ACPI signature (4 ASCII characters) */ \
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u32 length; /* Length of table, in bytes, including header */ \
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u8 revision; /* ACPI Specification minor version # */ \
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u8 checksum; /* To make sum of entire table == 0 */ \
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u8 oem_id [6]; /* OEM identification */ \
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u8 oem_table_id [8]; /* OEM table identification */ \
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u32 oem_revision; /* OEM revision number */ \
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u8 asl_compiler_id [4]; /* ASL compiler vendor ID */ \
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u32 asl_compiler_revision; /* ASL compiler revision number */
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* Fixed ACPI Description Table Fixed Feature Flags
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#define ACPI_FADT_F_WBINVD (1 << 0)
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#define ACPI_FADT_F_WBINVD_FLUSH (1 << 1)
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#define ACPI_FADT_F_PROC_C1 (1 << 2)
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#define ACPI_FADT_F_P_LVL2_UP (1 << 3)
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#define ACPI_FADT_F_PWR_BUTTON (1 << 4)
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#define ACPI_FADT_F_SLP_BUTTON (1 << 5)
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#define ACPI_FADT_F_FIX_RTC (1 << 6)
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#define ACPI_FADT_F_RTC_S4 (1 << 7)
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#define ACPI_FADT_F_TMR_VAL_EXT (1 << 8)
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#define ACPI_FADT_F_DCK_CAP (1 << 9)
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#define ACPI_FADT_F_RESET_REG_SUP (1 << 10)
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#define ACPI_FADT_F_SEALED_CASE (1 << 11)
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#define ACPI_FADT_F_HEADLESS (1 << 12)
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#define ACPI_FADT_F_CPU_SW_SLP (1 << 13)
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#define ACPI_FADT_F_PCI_EXP_WAK (1 << 14)
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#define ACPI_FADT_F_USE_PLATFORM_CLOCK (1 << 15)
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#define ACPI_FADT_F_S4_RTC_STS_VALID (1 << 16)
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#define ACPI_FADT_F_REMOTE_POWER_ON_CAPABLE (1 << 17)
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#define ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL (1 << 18)
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#define ACPI_FADT_F_FORCE_APIC_PHYSICAL_DESTINATION_MODE (1 << 19)
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#define ACPI_FADT_F_HW_REDUCED_ACPI (1 << 20)
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#define ACPI_FADT_F_LOW_POWER_S0_IDLE_CAPABLE (1 << 21)
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* ACPI 1.0 Fixed ACPI Description Table (FADT)
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#define FACP_SIGNATURE 0x50434146 // FACP
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struct fadt_descriptor_rev1
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ACPI_TABLE_HEADER_DEF /* ACPI common table header */
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u32 firmware_ctrl; /* Physical address of FACS */
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u32 dsdt; /* Physical address of DSDT */
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u8 model; /* System Interrupt Model */
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u8 reserved1; /* Reserved */
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u16 sci_int; /* System vector of SCI interrupt */
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u32 smi_cmd; /* Port address of SMI command port */
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u8 acpi_enable; /* Value to write to smi_cmd to enable ACPI */
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u8 acpi_disable; /* Value to write to smi_cmd to disable ACPI */
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u8 S4bios_req; /* Value to write to SMI CMD to enter S4BIOS state */
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u8 reserved2; /* Reserved - must be zero */
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u32 pm1a_evt_blk; /* Port address of Power Mgt 1a acpi_event Reg Blk */
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u32 pm1b_evt_blk; /* Port address of Power Mgt 1b acpi_event Reg Blk */
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u32 pm1a_cnt_blk; /* Port address of Power Mgt 1a Control Reg Blk */
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u32 pm1b_cnt_blk; /* Port address of Power Mgt 1b Control Reg Blk */
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u32 pm2_cnt_blk; /* Port address of Power Mgt 2 Control Reg Blk */
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u32 pm_tmr_blk; /* Port address of Power Mgt Timer Ctrl Reg Blk */
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u32 gpe0_blk; /* Port addr of General Purpose acpi_event 0 Reg Blk */
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u32 gpe1_blk; /* Port addr of General Purpose acpi_event 1 Reg Blk */
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u8 pm1_evt_len; /* Byte length of ports at pm1_x_evt_blk */
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u8 pm1_cnt_len; /* Byte length of ports at pm1_x_cnt_blk */
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u8 pm2_cnt_len; /* Byte Length of ports at pm2_cnt_blk */
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u8 pm_tmr_len; /* Byte Length of ports at pm_tm_blk */
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u8 gpe0_blk_len; /* Byte Length of ports at gpe0_blk */
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u8 gpe1_blk_len; /* Byte Length of ports at gpe1_blk */
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u8 gpe1_base; /* Offset in gpe model where gpe1 events start */
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u8 reserved3; /* Reserved */
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u16 plvl2_lat; /* Worst case HW latency to enter/exit C2 state */
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u16 plvl3_lat; /* Worst case HW latency to enter/exit C3 state */
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u16 flush_size; /* Size of area read to flush caches */
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u16 flush_stride; /* Stride used in flushing caches */
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u8 duty_offset; /* Bit location of duty cycle field in p_cnt reg */
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u8 duty_width; /* Bit width of duty cycle field in p_cnt reg */
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u8 day_alrm; /* Index to day-of-month alarm in RTC CMOS RAM */
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u8 mon_alrm; /* Index to month-of-year alarm in RTC CMOS RAM */
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u8 century; /* Index to century in RTC CMOS RAM */
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u8 reserved4; /* Reserved */
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u8 reserved4a; /* Reserved */
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u8 reserved4b; /* Reserved */
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struct acpi_table_header /* ACPI common table header */
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ACPI_TABLE_HEADER_DEF
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* ACPI 1.0 Root System Description Table (RSDT)
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#define RSDT_SIGNATURE 0x54445352 // RSDT
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struct rsdt_descriptor_rev1
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ACPI_TABLE_HEADER_DEF /* ACPI common table header */
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u32 table_offset_entry[0]; /* Array of pointers to other */
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* ACPI 1.0 Firmware ACPI Control Structure (FACS)
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#define FACS_SIGNATURE 0x53434146 // FACS
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struct facs_descriptor_rev1
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u32 signature; /* ACPI Signature */
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u32 length; /* Length of structure, in bytes */
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u32 hardware_signature; /* Hardware configuration signature */
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u32 firmware_waking_vector; /* ACPI OS waking vector */
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u32 global_lock; /* Global Lock */
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u8 resverved3 [40]; /* Reserved - must be zero */
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* Differentiated System Description Table (DSDT)
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#define DSDT_SIGNATURE 0x54445344 // DSDT
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* MADT values and structures
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/* Values for MADT PCATCompat */
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#define MULTIPLE_APIC 1
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#define APIC_SIGNATURE 0x43495041 // APIC
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struct multiple_apic_table
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ACPI_TABLE_HEADER_DEF /* ACPI common table header */
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u32 local_apic_address; /* Physical address of local APIC */
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/* Values for Type in APIC sub-headers */
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#define APIC_PROCESSOR 0
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#define APIC_XRUPT_OVERRIDE 2
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#define APIC_LOCAL_NMI 4
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#define APIC_ADDRESS_OVERRIDE 5
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#define APIC_IO_SAPIC 6
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#define APIC_LOCAL_SAPIC 7
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#define APIC_XRUPT_SOURCE 8
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#define APIC_RESERVED 9 /* 9 and greater are reserved */
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* MADT sub-structures (Follow MULTIPLE_APIC_DESCRIPTION_TABLE)
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#define ACPI_SUB_HEADER_DEF /* Common ACPI sub-structure header */\
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/* Sub-structures for MADT */
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struct madt_processor_apic
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u8 processor_id; /* ACPI processor id */
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u8 local_apic_id; /* Processor's local APIC id */
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u8 io_apic_id; /* I/O APIC ID */
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u8 reserved; /* Reserved - must be zero */
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u32 address; /* APIC physical address */
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u32 interrupt; /* Global system interrupt where INTI
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struct madt_intsrcovr {
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struct madt_local_nmi {
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u8 processor_id; /* ACPI processor id */
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u16 flags; /* MPS INTI flags */
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u8 lint; /* Local APIC LINT# */
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* HPET Description Table
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#define HPET_SIGNATURE 0x54455048 // HPET
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struct acpi_20_hpet {
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ACPI_TABLE_HEADER_DEF /* ACPI common table header */
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struct acpi_20_generic_address addr;
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* SRAT (NUMA topology description) table
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#define SRAT_SIGNATURE 0x54415253 // SRAT
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struct system_resource_affinity_table
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ACPI_TABLE_HEADER_DEF
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#define SRAT_PROCESSOR 0
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#define SRAT_MEMORY 1
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struct srat_processor_affinity
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struct srat_memory_affinity
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/* PCI fw r3.0 MCFG table. */
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struct acpi_mcfg_allocation {
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u64 address; /* Base address, processor-relative */
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u16 pci_segment; /* PCI segment group number */
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u8 start_bus_number; /* Starting PCI Bus number */
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u8 end_bus_number; /* Final PCI Bus number */
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#define MCFG_SIGNATURE 0x4746434d // MCFG
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struct acpi_table_mcfg {
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ACPI_TABLE_HEADER_DEF;
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struct acpi_mcfg_allocation allocation[0];
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struct rsdt_descriptor {
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ACPI_TABLE_HEADER_DEF
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#define TCPA_SIGNATURE 0x41504354
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struct tcpa_descriptor_rev2
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ACPI_TABLE_HEADER_DEF
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u32 log_area_minimum_length;
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u64 log_area_start_address;
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/* TCPA ACPI definitions */
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#define TCPA_ACPI_CLASS_CLIENT 0
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#define TCPA_ACPI_CLASS_SERVER 1