diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/northbridge/intel/sandybridge/acpi/hostbridge.asl | 119 | ||||
-rw-r--r-- | src/northbridge/intel/sandybridge/acpi/sandybridge.asl | 2 |
2 files changed, 119 insertions, 2 deletions
diff --git a/src/northbridge/intel/sandybridge/acpi/hostbridge.asl b/src/northbridge/intel/sandybridge/acpi/hostbridge.asl index 592c4c6b44..8dd1de6ff6 100644 --- a/src/northbridge/intel/sandybridge/acpi/hostbridge.asl +++ b/src/northbridge/intel/sandybridge/acpi/hostbridge.asl @@ -101,8 +101,125 @@ Device (MCHC) TLUD, 32, } -} + Name (CTCN, 0) /* CTDP Nominal Select */ + Name (CTCD, 1) /* CTDP Down Select */ + Name (CTCU, 2) /* CTDP Up Select */ + + OperationRegion (MCHB, SystemMemory, DEFAULT_MCHBAR, 0x8000) + Field (MCHB, DWordAcc, Lock, Preserve) + { + Offset (0x5930), + CTDN, 15, /* CTDP Nominal PL1 */ + Offset (0x59a0), + PL1V, 15, /* Power Limit 1 Value */ + PL1E, 1, /* Power Limit 1 Enable */ + PL1C, 1, /* Power Limit 1 Clamp */ + PL1T, 7, /* Power Limit 1 Time */ + Offset (0x59a4), + PL2V, 15, /* Power Limit 2 Value */ + PL2E, 1, /* Power Limit 2 Enable */ + PL2C, 1, /* Power Limit 2 Clamp */ + PL2T, 7, /* Power Limit 2 Time */ + Offset (0x5f3c), + TARN, 8, /* CTDP Nominal Turbo Activation Ratio */ + Offset (0x5f40), + CTDD, 15, /* CTDP Down PL1 */ + , 1, + TARD, 8, /* CTDP Down Turbo Activation Ratio */ + Offset (0x5f48), + CTDU, 15, /* CTDP Up PL1 */ + , 1, + TARU, 8, /* CTDP Up Turbo Activation Ratio */ + Offset (0x5f50), + CTCS, 2, /* CTDP Select */ + Offset (0x5f54), + TARS, 8, /* Turbo Activation Ratio Select */ + } + + /* + * Search CPU0 _PSS looking for control=arg0 and then + * return previous P-state entry number for new _PPC + * + * Format of _PSS: + * Name (_PSS, Package () { + * Package (6) { freq, power, tlat, blat, control, status } + * } + */ + External (\_PR.CPU0._PSS) + Method (PSSS, 1, NotSerialized) + { + Store (One, Local0) /* Start at P1 */ + Store (SizeOf (\_PR.CPU0._PSS), Local1) + + While (LLess (Local0, Local1)) { + /* Store _PSS entry Control value to Local2 */ + ShiftRight (DeRefOf (Index (DeRefOf (Index + (\_PR.CPU0._PSS, Local0)), 4)), 8, Local2) + If (LEqual (Local2, Arg0)) { + Return (Subtract (Local0, 1)) + } + Increment (Local0) + } + + Return (0) + } + + /* Set TDP Down */ + Method (STND, 0, Serialized) + { + Store ("Set TDP Down", Debug) + + If (LEqual (CTCD, CTCS)) { + Return (0) + } + + /* Set CTC */ + Store (CTCD, CTCS) + + /* Set TAR */ + Store (TARD, TARS) + + /* Set PPC limit and notify OS */ + Store (PSSS (TARD), PPCM) + PPCN () + + /* Set PL2 to 1.25 * PL1 */ + Divide (Multiply (CTDD, 125), 100, Local0, PL2V) + /* Set PL1 */ + Store (CTDD, PL1V) + + Return (1) + } + + /* Set TDP Nominal from Down */ + Method (STDN, 0, Serialized) + { + Store ("Set TDP Nominal", Debug) + + If (LEqual (CTCN, CTCS)) { + Return (0) + } + + /* Set PL1 */ + Store (CTDN, PL1V) + + /* Set PL2 to 1.25 * PL1 */ + Divide (Multiply (CTDN, 125), 100, Local0, PL2V) + + /* Set PPC limit and notify OS */ + Store (PSSS (TARN), PPCM) + PPCN () + + /* Set TAR */ + Store (TARN, TARS) + + /* Set CTC */ + Store (CTCN, CTCS) + + Return (1) + } +} // Current Resource Settings diff --git a/src/northbridge/intel/sandybridge/acpi/sandybridge.asl b/src/northbridge/intel/sandybridge/acpi/sandybridge.asl index 64b5d8f48e..6708e270e9 100644 --- a/src/northbridge/intel/sandybridge/acpi/sandybridge.asl +++ b/src/northbridge/intel/sandybridge/acpi/sandybridge.asl @@ -19,8 +19,8 @@ * MA 02110-1301 USA */ -#include "hostbridge.asl" #include "../sandybridge.h" +#include "hostbridge.asl" /* PCI Device Resource Consumption */ Device (PDRC) |