Add helper macros required for use with ACPI collaborative processor performance control (CPPC). This patch adds macros for initializing ACPI _CPC and _PSD control method. The CPC initializer macro initializes _CPC control method with revision 3 as specified in Arm FFH specification 1.1. The CPC initilizer exposes the reference performance counter and delivered perfrmance counter (AMU registers) as FFixedHW registers. The initilizer also expose the fastchannel memories for performance level set performance limit set protocols as desired performance register and performance limited register respectively.
Signed-off-by: Pranav Madhu <pranav.ma...@arm.com> --- Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h | 53 ++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h b/Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h index 4977d4d898aa..1b5305f15fb8 100644 --- a/Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h +++ b/Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h @@ -423,4 +423,57 @@ typedef struct { LineSize /* Line size in bytes */ \ } +// CPPC _CPC object initialization +#define CPPC_PACKAGE_INIT(DesiredPerfReg, PerfLimitedReg, GranularityMHz, \ + HighestPerf, NominalPerf, LowestNonlinearPerf, LowestPerf, RefPerf) \ + { \ + 23, /* NumEntries */ \ + 3, /* Revision */ \ + HighestPerf, /* Highest Performance */ \ + NominalPerf, /* Nominal Performance */ \ + LowestNonlinearPerf, /* Lowest Nonlinear Performance */ \ + LowestPerf, /* Lowest Performance */ \ + /* Guaranteed Performance Register */ \ + ResourceTemplate () { Register (SystemMemory, 0, 0, 0, 0) }, \ + /* Desired Performance Register */ \ + ResourceTemplate () { Register (SystemMemory, 32, 0, DesiredPerfReg, 3) }, \ + /* Minimum Performance Register */ \ + ResourceTemplate () { Register (SystemMemory, 0, 0, 0, 0) }, \ + /* Maximum Performance Register */ \ + ResourceTemplate () { Register (SystemMemory, 0, 0, 0, 0) }, \ + /* Performance Reduction Tolerance Register */ \ + ResourceTemplate () { Register (SystemMemory, 0, 0, 0, 0) }, \ + /* Time Window Register */ \ + ResourceTemplate () { Register (SystemMemory, 0, 0, 0, 0) }, \ + /* Counter Wraparound Time */ \ + ResourceTemplate () { Register (SystemMemory, 0, 0, 0, 0) }, \ + /* Reference Performance Counter Register */ \ + ResourceTemplate () { Register (FFixedHW, 64, 0, 1, 4) }, \ + /* Delivered Performance Counter Register */ \ + ResourceTemplate () { Register (FFixedHW, 64, 0, 0, 4) }, \ + /* Performance Limited Register */ \ + ResourceTemplate () { Register (SystemMemory, 32, 0, PerfLimitedReg, 3) }, \ + /* CPPC Enable Register */ \ + ResourceTemplate () { Register (SystemMemory, 0, 0, 0, 0) }, \ + /* Autonomous Selection Enable Register */ \ + ResourceTemplate () { Register (SystemMemory, 0, 0, 0, 0) }, \ + /* Autonomous Activity Window Register */ \ + ResourceTemplate () { Register (SystemMemory, 0, 0, 0, 0) }, \ + /* Energy Performance Preference Register */ \ + ResourceTemplate () { Register (SystemMemory, 0, 0, 0, 0) }, \ + RefPerf, /* Reference Performance */ \ + (LowestPerf * GranularityMHz), /* Lowest Frequency */ \ + (NominalPerf * GranularityMHz), /* Nominal Frequency */ \ + } + +// Power state dependancy (_PSD) for CPPC +#define PSD_INIT(Domain) \ + { \ + 5, /* Entries */ \ + 0, /* Revision */ \ + Domain, /* Domain */ \ + 0xFD, /* Coord Type- SW_ANY */ \ + 1 /* Processors */ \ + } + #endif /* __SGI_ACPI_HEADER__ */ -- 2.17.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#74551): https://edk2.groups.io/g/devel/message/74551 Mute This Topic: https://groups.io/mt/82428272/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-