v1 -> v2: - PCDs values about CXL exclusive MMIO32 & MMIO64 space - CXL Bus range: 0xc0 ~ 0xff - PCIE ecam space & Cxl ecam space - CEDT format
RFC because - Many contents are ported from Jonathan' patch on qemu virt design
- Bring plenty of PCDs values and modifying the original PCIE values
- Less experience and not particularly confident in ACPI area
This series leverages Jonathan's patches[1] to add acpi0016 & acpi0017 objects into the previous DSDT table of sbsa-ref. Since the acpi0016 implementation model on qemu side is the pxb-cxl, this cxl Bus would share ECAM sapce of PCIE Bus. Thus I divide some space from Pcie Ecam to support cxl-related values.
To prevent breaking the original pcie mmio space, this adds exclusive mmio32 & mmio64 space for cxl host.
This defines the pcie bus range of cxl host is 0xc0 ~ 0xff, since the pxb-cxl-host as well as cxl components on it would occupy the original pcie buses, the original pcie ecam space should divided some range for pxb-cxl-host.
Based on the new CEDT definitions patch on edk2[2], this series adds a static Cedt.aslc to support the [SBSA_CXL_HOST] & [SBSA_CXL_FIXED_WINDOW] space on sbsa-ref.
DSDT: Device (CXL0) { Name (_HID, "ACPI0016" /* Compute Express Link Host Bridge */) // _HID: Hardware ID Name (_CID, Package (0x02) // _CID: Compatible ID { EisaId ("PNP0A08") /* PCI Express Bus */, EisaId ("PNP0A03") /* PCI Bus */ }) Name (_BBN, 0xC0) // _BBN: BIOS Bus Number Name (_UID, One) // _UID: Unique ID Name (_STR, Unicode ("pxb Device")) // _STR: Description String Name (_CCA, One) // _CCA: Cache Coherency Attribute Name (_PRT, Package (0x80) // _PRT: PCI Routing Table { Package (0x04) { 0xFFFF, Zero, GSI0, Zero },
Package (0x04) { 0xFFFF, One, GSI1, Zero },
Package (0x04) { 0xFFFF, 0x02, GSI2, Zero },
Package (0x04) { 0xFFFF, 0x03, GSI3, Zero },
Package (0x04) { 0x0001FFFF, Zero, GSI1, Zero },
Package (0x04) { 0x0001FFFF, One, GSI2, Zero },
Package (0x04) { 0x0001FFFF, 0x02, GSI3, Zero },
Package (0x04) { 0x0001FFFF, 0x03, GSI0, Zero },
Package (0x04) { 0x0002FFFF, Zero, GSI2, Zero },
Package (0x04) { 0x0002FFFF, One, GSI3, Zero },
Package (0x04) { 0x0002FFFF, 0x02, GSI0, Zero },
Package (0x04) { 0x0002FFFF, 0x03, GSI1, Zero },
Package (0x04) { 0x0003FFFF, Zero, GSI3, Zero },
Package (0x04) { 0x0003FFFF, One, GSI0, Zero },
Package (0x04) { 0x0003FFFF, 0x02, GSI1, Zero },
Package (0x04) { 0x0003FFFF, 0x03, GSI2, Zero },
Package (0x04) { 0x0004FFFF, Zero, GSI0, Zero },
Package (0x04) { 0x0004FFFF, One, GSI1, Zero },
Package (0x04) { 0x0004FFFF, 0x02, GSI2, Zero },
Package (0x04) { 0x0004FFFF, 0x03, GSI3, Zero },
Package (0x04) { 0x0005FFFF, Zero, GSI1, Zero },
Package (0x04) { 0x0005FFFF, One, GSI2, Zero },
Package (0x04) { 0x0005FFFF, 0x02, GSI3, Zero },
Package (0x04) { 0x0005FFFF, 0x03, GSI0, Zero },
Package (0x04) { 0x0006FFFF, Zero, GSI2, Zero },
Package (0x04) { 0x0006FFFF, One, GSI3, Zero },
Package (0x04) { 0x0006FFFF, 0x02, GSI0, Zero },
Package (0x04) { 0x0006FFFF, 0x03, GSI1, Zero },
Package (0x04) { 0x0007FFFF, Zero, GSI3, Zero },
Package (0x04) { 0x0007FFFF, One, GSI0, Zero },
Package (0x04) { 0x0007FFFF, 0x02, GSI1, Zero },
Package (0x04) { 0x0007FFFF, 0x03, GSI2, Zero },
Package (0x04) { 0x0008FFFF, Zero, GSI0, Zero },
Package (0x04) { 0x0008FFFF, One, GSI1, Zero },
Package (0x04) { 0x0008FFFF, 0x02, GSI2, Zero },
Package (0x04) { 0x0008FFFF, 0x03, GSI3, Zero },
Package (0x04) { 0x0009FFFF, Zero, GSI1, Zero },
Package (0x04) { 0x0009FFFF, One, GSI2, Zero },
Package (0x04) { 0x0009FFFF, 0x02, GSI3, Zero },
Package (0x04) { 0x0009FFFF, 0x03, GSI0, Zero },
Package (0x04) { 0x000AFFFF, Zero, GSI2, Zero },
Package (0x04) { 0x000AFFFF, One, GSI3, Zero },
Package (0x04) { 0x000AFFFF, 0x02, GSI0, Zero },
Package (0x04) { 0x000AFFFF, 0x03, GSI1, Zero },
Package (0x04) { 0x000BFFFF, Zero, GSI3, Zero },
Package (0x04) { 0x000BFFFF, One, GSI0, Zero },
Package (0x04) { 0x000BFFFF, 0x02, GSI1, Zero },
Package (0x04) { 0x000BFFFF, 0x03, GSI2, Zero },
Package (0x04) { 0x000CFFFF, Zero, GSI0, Zero },
Package (0x04) { 0x000CFFFF, One, GSI1, Zero },
Package (0x04) { 0x000CFFFF, 0x02, GSI2, Zero },
Package (0x04) { 0x000CFFFF, 0x03, GSI3, Zero },
Package (0x04) { 0x000DFFFF, Zero, GSI1, Zero },
Package (0x04) { 0x000DFFFF, One, GSI2, Zero },
Package (0x04) { 0x000DFFFF, 0x02, GSI3, Zero },
Package (0x04) { 0x000DFFFF, 0x03, GSI0, Zero },
Package (0x04) { 0x000EFFFF, Zero, GSI2, Zero },
Package (0x04) { 0x000EFFFF, One, GSI3, Zero },
Package (0x04) { 0x000EFFFF, 0x02, GSI0, Zero },
Package (0x04) { 0x000EFFFF, 0x03, GSI1, Zero },
Package (0x04) { 0x000FFFFF, Zero, GSI3, Zero },
Package (0x04) { 0x000FFFFF, One, GSI0, Zero },
Package (0x04) { 0x000FFFFF, 0x02, GSI1, Zero },
Package (0x04) { 0x000FFFFF, 0x03, GSI2, Zero },
Package (0x04) { 0x0010FFFF, Zero, GSI0, Zero },
Package (0x04) { 0x0010FFFF, One, GSI1, Zero },
Package (0x04) { 0x0010FFFF, 0x02, GSI2, Zero },
Package (0x04) { 0x0010FFFF, 0x03, GSI3, Zero },
Package (0x04) { 0x0011FFFF, Zero, GSI1, Zero },
Package (0x04) { 0x0011FFFF, One, GSI2, Zero },
Package (0x04) { 0x0011FFFF, 0x02, GSI3, Zero },
Package (0x04) { 0x0011FFFF, 0x03, GSI0, Zero },
Package (0x04) { 0x0012FFFF, Zero, GSI2, Zero },
Package (0x04) { 0x0012FFFF, One, GSI3, Zero },
Package (0x04) { 0x0012FFFF, 0x02, GSI0, Zero },
Package (0x04) { 0x0012FFFF, 0x03, GSI1, Zero },
Package (0x04) { 0x0013FFFF, Zero, GSI3, Zero },
Package (0x04) { 0x0013FFFF, One, GSI0, Zero },
Package (0x04) { 0x0013FFFF, 0x02, GSI1, Zero },
Package (0x04) { 0x0013FFFF, 0x03, GSI2, Zero },
Package (0x04) { 0x0014FFFF, Zero, GSI0, Zero },
Package (0x04) { 0x0014FFFF, One, GSI1, Zero },
Package (0x04) { 0x0014FFFF, 0x02, GSI2, Zero },
Package (0x04) { 0x0014FFFF, 0x03, GSI3, Zero },
Package (0x04) { 0x0015FFFF, Zero, GSI1, Zero },
Package (0x04) { 0x0015FFFF, One, GSI2, Zero },
Package (0x04) { 0x0015FFFF, 0x02, GSI3, Zero },
Package (0x04) { 0x0015FFFF, 0x03, GSI0, Zero },
Package (0x04) { 0x0016FFFF, Zero, GSI2, Zero },
Package (0x04) { 0x0016FFFF, One, GSI3, Zero },
Package (0x04) { 0x0016FFFF, 0x02, GSI0, Zero },
Package (0x04) { 0x0016FFFF, 0x03, GSI1, Zero },
Package (0x04) { 0x0017FFFF, Zero, GSI3, Zero },
Package (0x04) { 0x0017FFFF, One, GSI0, Zero },
Package (0x04) { 0x0017FFFF, 0x02, GSI1, Zero },
Package (0x04) { 0x0017FFFF, 0x03, GSI2, Zero },
Package (0x04) { 0x0018FFFF, Zero, GSI0, Zero },
Package (0x04) { 0x0018FFFF, One, GSI1, Zero },
Package (0x04) { 0x0018FFFF, 0x02, GSI2, Zero },
Package (0x04) { 0x0018FFFF, 0x03, GSI3, Zero },
Package (0x04) { 0x0019FFFF, Zero, GSI1, Zero },
Package (0x04) { 0x0019FFFF, One, GSI2, Zero },
Package (0x04) { 0x0019FFFF, 0x02, GSI3, Zero },
Package (0x04) { 0x0019FFFF, 0x03, GSI0, Zero },
Package (0x04) { 0x001AFFFF, Zero, GSI2, Zero },
Package (0x04) { 0x001AFFFF, One, GSI3, Zero },
Package (0x04) { 0x001AFFFF, 0x02, GSI0, Zero },
Package (0x04) { 0x001AFFFF, 0x03, GSI1, Zero },
Package (0x04) { 0x001BFFFF, Zero, GSI3, Zero },
Package (0x04) { 0x001BFFFF, One, GSI0, Zero },
Package (0x04) { 0x001BFFFF, 0x02, GSI1, Zero },
Package (0x04) { 0x001BFFFF, 0x03, GSI2, Zero },
Package (0x04) { 0x001CFFFF, Zero, GSI0, Zero },
Package (0x04) { 0x001CFFFF, One, GSI1, Zero },
Package (0x04) { 0x001CFFFF, 0x02, GSI2, Zero },
Package (0x04) { 0x001CFFFF, 0x03, GSI3, Zero },
Package (0x04) { 0x001DFFFF, Zero, GSI1, Zero },
Package (0x04) { 0x001DFFFF, One, GSI2, Zero },
Package (0x04) { 0x001DFFFF, 0x02, GSI3, Zero },
Package (0x04) { 0x001DFFFF, 0x03, GSI0, Zero },
Package (0x04) { 0x001EFFFF, Zero, GSI2, Zero },
Package (0x04) { 0x001EFFFF, One, GSI3, Zero },
Package (0x04) { 0x001EFFFF, 0x02, GSI0, Zero },
Package (0x04) { 0x001EFFFF, 0x03, GSI1, Zero },
Package (0x04) { 0x001FFFFF, Zero, GSI3, Zero },
Package (0x04) { 0x001FFFFF, One, GSI0, Zero },
Package (0x04) { 0x001FFFFF, 0x02, GSI1, Zero },
Package (0x04) { 0x001FFFFF, 0x03, GSI2, Zero } }) Device (GSI0) { Name (_HID, "PNP0C0F" /* PCI Interrupt Link Device */) // _HID: Hardware ID Name (_UID, Zero) // _UID: Unique ID Name (_PRS, ResourceTemplate () // _PRS: Possible Resource Settings { Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x00000023, } }) Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x00000023, } }) Method (_SRS, 1, NotSerialized) // _SRS: Set Resource Settings { } }
Device (GSI1) { Name (_HID, "PNP0C0F" /* PCI Interrupt Link Device */) // _HID: Hardware ID Name (_UID, One) // _UID: Unique ID Name (_PRS, ResourceTemplate () // _PRS: Possible Resource Settings { Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x00000024, } }) Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x00000024, } }) Method (_SRS, 1, NotSerialized) // _SRS: Set Resource Settings { } }
Device (GSI2) { Name (_HID, "PNP0C0F" /* PCI Interrupt Link Device */) // _HID: Hardware ID Name (_UID, 0x02) // _UID: Unique ID Name (_PRS, ResourceTemplate () // _PRS: Possible Resource Settings { Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x00000025, } }) Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x00000025, } }) Method (_SRS, 1, NotSerialized) // _SRS: Set Resource Settings { } }
Device (GSI3) { Name (_HID, "PNP0C0F" /* PCI Interrupt Link Device */) // _HID: Hardware ID Name (_UID, 0x03) // _UID: Unique ID Name (_PRS, ResourceTemplate () // _PRS: Possible Resource Settings { Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x00000026, } }) Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive, ,, ) { 0x00000026, } }) Method (_SRS, 1, NotSerialized) // _SRS: Set Resource Settings { } }
Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x00000000, // Granularity 0x60130000, // Range Minimum 0x6212FFFF, // Range Maximum 0x00000000, // Translation Offset 0x02000000, // Length ,, , AddressRangeMemory, TypeStatic) QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, Cacheable, ReadWrite, 0x0000000000000000, // Granularity 0x0000090000000000, // Range Minimum 0x00000900000FFFFF, // Range Maximum 0x0000000000000000, // Translation Offset 0x0000000000100000, // Length ,, , AddressRangeMemory, TypeStatic) WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode, 0x0000, // Granularity 0x00C0, // Range Minimum 0x00FF, // Range Maximum 0x0000, // Translation Offset 0x0040, // Length ,, ) }) Device (RES0) { Name (_HID, "PNP0C02" /* PNP Motherboard Resources */) // _HID: Hardware ID Name (_CRS, ResourceTemplate () // _CRS: Current Resource Settings { QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, NonCacheable, ReadWrite, 0x0000000000000000, // Granularity 0x00000000FC000000, // Range Minimum 0x00000000FFFFFFFF, // Range Maximum 0x0000000000000000, // Translation Offset 0x0000000004000000, // Length ,, , AddressRangeMemory, TypeStatic) }) Method (_STA, 0, NotSerialized) // _STA: Status { Return (0x0F) } }
Name (SUPP, Zero) Name (CTRL, Zero) Name (SUPC, Zero) Name (CTRC, Zero) Method (_OSC, 4, NotSerialized) // _OSC: Operating System Capabilities { CreateDWordField (Arg3, Zero, CDW1) If (((Arg0 == ToUUID ("33db4d5b-1ff7-401c-9657-7441c03dd766") /* PCI Host Bridge Device */) || (Arg0 == ToUUID ("68f2d50b-c469-4d8a-bd3d-941a103fd3fc") /* Unknown UUID */))) { CreateDWordField (Arg3, 0x04, CDW2) CreateDWordField (Arg3, 0x08, CDW3) Local0 = CDW3 /* _SB_.CXL0._OSC.CDW3 */ Local0 &= 0x1F If ((Arg1 != One)) { CDW1 |= 0x08 }
If ((CDW3 != Local0)) { CDW1 |= 0x10 }
SUPP = CDW2 /* _SB_.CXL0._OSC.CDW2 */ CTRL = CDW3 /* _SB_.CXL0._OSC.CDW3 */ CDW3 = Local0 If ((Arg0 == ToUUID ("68f2d50b-c469-4d8a-bd3d-941a103fd3fc") /* Unknown UUID */)) { CreateDWordField (Arg3, 0x0C, CDW4) CreateDWordField (Arg3, 0x10, CDW5) SUPC = CDW4 /* _SB_.CXL0._OSC.CDW4 */ CTRC = CDW5 /* _SB_.CXL0._OSC.CDW5 */ CDW5 |= One }
Return (Arg3) } Else { CDW1 |= 0x04 Return (Arg3) } } }
CEDT: [000h 0000 004h] Signature : "CEDT" [CXL Early Discovery Table] [004h 0004 004h] Table Length : 000000A8 [008h 0008 001h] Revision : 01 [009h 0009 001h] Checksum : 50 [00Ah 0010 006h] Oem ID : "LINARO" [010h 0016 008h] Oem Table ID : "SBSAQEMU" [018h 0024 004h] Oem Revision : 20240625 [01Ch 0028 004h] Asl Compiler ID : "LNRO" [020h 0032 004h] Asl Compiler Revision : 00000001
[024h 0036 001h] Subtable Type : 00 [CXL Host Bridge Structure] [025h 0037 001h] Reserved : 00 [026h 0038 002h] Length : 0020 [028h 0040 004h] Associated host bridge : 00000001 [02Ch 0044 004h] Specification version : 00000001 [030h 0048 004h] Reserved : 00000000 [034h 0052 008h] Register base : 0000000060120000 [03Ch 0060 008h] Register length : 0000000000010000
[044h 0068 001h] Subtable Type : 01 [CXL Fixed Memory Window Structure] [045h 0069 001h] Reserved : 00 [046h 0070 002h] Length : 0064 [048h 0072 004h] Reserved : 00000000 [04Ch 0076 008h] Window base address : 00000A0000000000 [054h 0084 008h] Window size : 0000010000000000 [05Ch 0092 001h] Interleave Members : 00 [05Dh 0093 001h] Interleave Arithmetic : 00 [05Eh 0094 002h] Reserved : 0000 [060h 0096 004h] Granularity : 00000000 [064h 0100 002h] Restrictions : 000F [066h 0102 002h] QtgId : 0001 [068h 0104 004h] First Target : 00000001
Link: [1]: https://lore.kernel.org/linux-cxl/20220616141950.23374-2-Jonathan.Cameron@hu... [2]: https://edk2.groups.io/g/devel/topic/rfc_edk2_patch_v3_0_1/109403423#
Yuquan Wang (1): SbsaQemu: Support basic CXL enablement
Platform/Qemu/SbsaQemu/SbsaQemu.dsc | 23 +- .../Qemu/SbsaQemu/AcpiTables/AcpiTables.inf | 19 + Silicon/Qemu/SbsaQemu/AcpiTables/Cedt.aslc | 69 +++ Silicon/Qemu/SbsaQemu/AcpiTables/Dsdt.asl | 401 +++++++++++++++++- Silicon/Qemu/SbsaQemu/AcpiTables/Mcfg.aslc | 2 +- Silicon/Qemu/SbsaQemu/SbsaQemu.dec | 34 +- 6 files changed, 537 insertions(+), 11 deletions(-) create mode 100644 Silicon/Qemu/SbsaQemu/AcpiTables/Cedt.aslc