system/ulib/hypervisor/acpi/dsdt.asl

// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// From ACPI 6.1, Section 19.6.28: For compatibility with ACPI versions before
// ACPI 2.0, the bit width of Integer objects is dependent on the
// ComplianceRevision of the DSDT. If the ComplianceRevision is less than 2, all
// integers are restricted to 32 bits. Otherwise, full 64-bit integers are used.
// The version of the DSDT sets the global integer width for all integers,
// including integers in SSDTs.
DefinitionBlock ("dsdt.aml", "DSDT", 2, "ZX", "ZX DSDT", 0x0)
{
    Name (PICM, Zero)
    Method (_PIC, 1, NotSerialized)                                 // _PIC: Interrupt Model
    {
        PICM = Arg0
    }

    Scope (_SB)
    {
        Device (PCI0)
        {
            Name (_HID, EisaId ("PNP0A08") /* PCI Express Bus */)   // _HID: Hardware ID
            Name (_CID, EisaId ("PNP0A03") /* PCI Bus */)           // _CID: Compatible ID
            Name (_UID, 0)                                          // _UID: Unique ID

            Name(_PRT, Package()                                    // _PRT: PCI Routing Table
            {
                // Device 0-4.
                Package() { 0x0000ffff, 0, Zero, 32 },
                Package() { 0x0001ffff, 0, Zero, 33 },
                Package() { 0x0002ffff, 0, Zero, 34 },
                Package() { 0x0003ffff, 0, Zero, 35 },
                Package() { 0x0004ffff, 0, Zero, 36 },
            })

            NAME(_CRS, ResourceTemplate() {                         // _CRS: Current Resource Setting
                // Allocate PCI Bus Numbers.
                WORDBusNumber(                                      // Produce Bus 0-ff
                    ResourceProducer,
                    MinFixed,
                    MaxFixed,
                    PosDecode,
                    0x0000,                                         // AddressGranularity
                    0x0000,                                         // AddressMin
                    0x00ff,                                         // AddressMax
                    0x0000,                                         // AddressTranslation
                    0x0100                                          // RangeLength
                )

                // Consume PCI Address/Data ports.
                IO(                                                 // Consumed resource (CF8-CFF)
                    Decode16,
                    0x0cf8,                                         // AddressMin
                    0x0cf8,                                         // AddressMax
                    0x0001,                                         // AddressAlignment
                    0x0008                                          // RangeLength
                )

                // Allocated port ranges that this bridge can map devices to.
                WORDIO(                                             // Produce resource (8000-8FFF)
                    ResourceProducer,
                    MinFixed,
                    MaxFixed,
                    PosDecode,
                    EntireRange,
                    0x0000,                                         // AddressGranularity
                    0x8000,                                         // AddressMin
                    0x8fff,                                         // AddressMax
                    0x0000,                                         // AddressTranslation
                    0x1000                                          // RangeLength
                )
            })
        }
    }
}