| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| Scope (\_SB.PCI0.MCHC) |
| { |
| Mutex (CTCM, 1) /* CTDP Switch Mutex (sync level 1) */ |
| Name (CTCC, 0) /* CTDP Current Selection */ |
| Name (CTCN, 0) /* CTDP Nominal Select */ |
| Name (CTCD, 1) /* CTDP Down Select */ |
| Name (CTCU, 2) /* CTDP Up Select */ |
| Name (SPL1, 0) /* Saved PL1 value */ |
| |
| OperationRegion (MCHB, SystemMemory, CONFIG_FIXED_MCHBAR_MMIO_BASE + 0x5000, 0x1000) |
| Field (MCHB, DWordAcc, Lock, Preserve) |
| { |
| Offset (0x930), /* PACKAGE_POWER_SKU */ |
| CTDN, 15, /* CTDP Nominal PL1 */ |
| Offset (0x938), /* PACKAGE_POWER_SKU_UNIT */ |
| PUNI, 4, /* Power Units */ |
| , 4, |
| EUNI, 5, /* Energy Units */ |
| , 3, |
| TUNI, 4, /* Time Units */ |
| Offset (0x958), /* PLATFORM_INFO */ |
| , 40, |
| LFM_, 8, /* Maximum Efficiency Ratio (LFM) */ |
| Offset (0x9a0), /* TURBO_POWER_LIMIT1 */ |
| 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 (0x9a4), /* TURBO_POWER_LIMIT2 */ |
| 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 (0xf3c), /* CONFIG_TDP_NOMINAL */ |
| TARN, 8, /* CTDP Nominal Turbo Activation Ratio */ |
| Offset (0xf40), /* CONFIG_TDP_LEVEL1 */ |
| CTDD, 15, /* CTDP Down PL1 */ |
| , 1, |
| TARD, 8, /* CTDP Down Turbo Activation Ratio */ |
| Offset (0xf48), /* MSR_CONFIG_TDP_LEVEL2 */ |
| CTDU, 15, /* CTDP Up PL1 */ |
| , 1, |
| TARU, 8, /* CTDP Up Turbo Activation Ratio */ |
| Offset (0xf50), /* CONFIG_TDP_CONTROL */ |
| CTCS, 2, /* CTDP Select */ |
| Offset (0xf54), /* TURBO_ACTIVATION_RATIO */ |
| 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 (\_SB.CP00._PSS) |
| Method (PSSS, 1, NotSerialized) |
| { |
| Local0 = 1 /* Start at P1 */ |
| Local1 = SizeOf (\_SB.CP00._PSS) |
| |
| While (Local0 < Local1) { |
| /* Store _PSS entry Control value to Local2 */ |
| Local2 = DeRefOf (Index (DeRefOf (Index (\_SB.CP00._PSS, Local0)), 4)) >> 8 |
| If (Local2 == Arg0) { |
| Return (Local0 - 1) |
| } |
| Local0++ |
| } |
| |
| Return (0) |
| } |
| |
| /* Calculate PL2 based on chip type */ |
| Method (CPL2, 1, NotSerialized) |
| { |
| /* Haswell ULT PL2 = 25W */ |
| /* FIXME: update for broadwell */ |
| Return (25 * 8) |
| } |
| |
| /* Set Config TDP Down */ |
| Method (STND, 0, Serialized) |
| { |
| If (Acquire (CTCM, 100)) { |
| Return (0) |
| } |
| If (CTCD == CTCC) { |
| Release (CTCM) |
| Return (0) |
| } |
| |
| Debug = "Set TDP Down" |
| |
| /* Set CTC */ |
| CTCS = CTCD |
| |
| /* Set TAR */ |
| TARS = TARD |
| |
| /* Set PPC limit and notify OS */ |
| PPCM = PSSS (TARD) |
| PPCN () |
| |
| /* Set PL2 */ |
| PL2V = CPL2 (CTDD) |
| |
| /* Set PL1 */ |
| PL1V = CTDD |
| |
| /* Store the new TDP Down setting */ |
| CTCC = CTCD |
| |
| Release (CTCM) |
| Return (1) |
| } |
| |
| /* Set Config TDP Nominal from Down */ |
| Method (STDN, 0, Serialized) |
| { |
| If (Acquire (CTCM, 100)) { |
| Return (0) |
| } |
| If (CTCN == CTCC) { |
| Release (CTCM) |
| Return (0) |
| } |
| |
| Debug = "Set TDP Nominal" |
| |
| /* Set PL1 */ |
| PL1V = CTDN |
| |
| /* Set PL2 */ |
| PL2V = CPL2 (CTDN) |
| |
| /* Set PPC limit and notify OS */ |
| PPCM = PSSS (TARN) |
| PPCN () |
| |
| /* Set TAR */ |
| TARS = TARN |
| |
| /* Set CTC */ |
| CTCS = CTCN |
| |
| /* Store the new TDP Nominal setting */ |
| CTCC = CTCN |
| |
| Release (CTCM) |
| Return (1) |
| } |
| |
| /* Calculate PL1 value based on requested TDP */ |
| Method (TDPP, 1, NotSerialized) |
| { |
| Return (((PUNI - 1) << 2) * Arg0) |
| } |
| |
| /* Enable Controllable TDP to limit PL1 to requested value */ |
| Method (CTLE, 1, Serialized) |
| { |
| If (Acquire (CTCM, 100)) { |
| Return (0) |
| } |
| |
| Debug = "Enable PL1 Limit" |
| |
| /* Set _PPC to LFM */ |
| Local0 = PSSS (LFM_) |
| PPCM = Local0 + 1 |
| \PPCN () |
| |
| /* Set TAR to LFM-1 */ |
| TARS = LFM_ - 1 |
| |
| /* Set PL1 to desired value */ |
| SPL1 = PL1V |
| PL1V = TDPP (Arg0) |
| |
| /* Set PL1 CLAMP bit */ |
| PL1C = 1 |
| |
| Release (CTCM) |
| Return (1) |
| } |
| |
| /* Disable Controllable TDP */ |
| Method (CTLD, 0, Serialized) |
| { |
| If (Acquire (CTCM, 100)) { |
| Return (0) |
| } |
| |
| Debug = "Disable PL1 Limit" |
| |
| /* Clear PL1 CLAMP bit */ |
| PL1C = 0 |
| |
| /* Set PL1 to normal value */ |
| PL1V = SPL1 |
| |
| /* Set TAR to 0 */ |
| TARS = 0 |
| |
| /* Set _PPC to 0 */ |
| PPCM = 0 |
| \PPCN () |
| |
| Release (CTCM) |
| Return (1) |
| } |
| } |