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/* SPDX-License-Identifier: GPL-2.0-only */
Name(_HID,EISAID("PNP0A08")) // PCIe
Name(_CID,EISAID("PNP0A03")) // PCI
Name(_BBN, 0)
Name(\PPCM, 0)
Device (MCHC)
{
Name(_ADR, 0x00000000) // 0:0.0
OperationRegion(MCHP, PCI_Config, 0x00, 0x100)
Field (MCHP, DWordAcc, NoLock, Preserve)
{
Offset (0x40), // EPBAR
EPEN, 1, // Enable
, 11, //
EPBR, 24, // EPBAR
Offset (0x48), // MCHBAR
MHEN, 1, // Enable
, 13, //
MHBR, 22, // MCHBAR
Offset (0x60), // PCIe BAR
PXEN, 1, // Enable
PXSZ, 2, // BAR size
, 23, //
PXBR, 10, // PCIe BAR
Offset (0x68), // DMIBAR
DMEN, 1, // Enable
, 11, //
DMBR, 24, // DMIBAR
Offset (0xa0),
TOM, 16,
TUUD, 16,
Offset (0xb0), // Top of Low Used Memory
TLUD, 16,
}
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 */
OperationRegion (MCHB, SystemMemory, CONFIG_FIXED_MCHBAR_MMIO_BASE, 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 (\_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 (DeRefOf (\_SB.CP00._PSS[Local0])[4]) >> 8
If (Local2 == Arg0) {
Return (Local0 - 1)
}
Local0++
}
Return (0)
}
/* Set TDP Down */
Method (STND, 0, Serialized)
{
If (Acquire (CTCM, 100)) {
Return (0)
}
If (CTCD == CTCC) {
Release (CTCM)
Return (0)
}
Printf ("Set TDP Down")
/* Set CTC */
CTCS = CTCD
/* Set TAR */
TARS = TARD
/* Set PPC limit and notify OS */
PPCM = PSSS (TARD)
PPCN ()
/* Set PL2 to 1.25 * PL1 */
PL2V = (CTDD * 125) / 100
/* Set PL1 */
PL1V = CTDD
/* Store the new TDP Down setting */
CTCC = CTCD
Release (CTCM)
Return (1)
}
/* Set TDP Nominal from Down */
Method (STDN, 0, Serialized)
{
If (Acquire (CTCM, 100)) {
Return (0)
}
If (CTCN == CTCC) {
Release (CTCM)
Return (0)
}
Printf ("Set TDP Nominal")
/* Set PL1 */
PL1V = CTDN
/* Set PL2 to 1.25 * PL1 */
PL2V = (CTDN * 125) / 100
/* 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)
}
}
// Current Resource Settings
Name (MCRS, ResourceTemplate()
{
// Bus Numbers
WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode,
0x0000, 0x0000, 0x00ff, 0x0000, 0x0100,,, PB00)
// IO Region 0
DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
0x0000, 0x0000, 0x0cf7, 0x0000, 0x0cf8,,, PI00)
// PCI Config Space
Io (Decode16, 0x0cf8, 0x0cf8, 0x0001, 0x0008)
// IO Region 1
DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
0x0000, 0x0d00, 0xffff, 0x0000, 0xf300,,, PI01)
// VGA memory (0xa0000-0xbffff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000a0000, 0x000bffff, 0x00000000,
0x00020000,,, ASEG)
// OPROM reserved (0xc0000-0xc3fff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000c0000, 0x000c3fff, 0x00000000,
0x00004000,,, OPR0)
// OPROM reserved (0xc4000-0xc7fff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000c4000, 0x000c7fff, 0x00000000,
0x00004000,,, OPR1)
// OPROM reserved (0xc8000-0xcbfff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000c8000, 0x000cbfff, 0x00000000,
0x00004000,,, OPR2)
// OPROM reserved (0xcc000-0xcffff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000cc000, 0x000cffff, 0x00000000,
0x00004000,,, OPR3)
// OPROM reserved (0xd0000-0xd3fff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000d0000, 0x000d3fff, 0x00000000,
0x00004000,,, OPR4)
// OPROM reserved (0xd4000-0xd7fff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000d4000, 0x000d7fff, 0x00000000,
0x00004000,,, OPR5)
// OPROM reserved (0xd8000-0xdbfff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000d8000, 0x000dbfff, 0x00000000,
0x00004000,,, OPR6)
// OPROM reserved (0xdc000-0xdffff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000dc000, 0x000dffff, 0x00000000,
0x00004000,,, OPR7)
// BIOS Extension (0xe0000-0xe3fff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000e0000, 0x000e3fff, 0x00000000,
0x00004000,,, ESG0)
// BIOS Extension (0xe4000-0xe7fff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000e4000, 0x000e7fff, 0x00000000,
0x00004000,,, ESG1)
// BIOS Extension (0xe8000-0xebfff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000e8000, 0x000ebfff, 0x00000000,
0x00004000,,, ESG2)
// BIOS Extension (0xec000-0xeffff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000ec000, 0x000effff, 0x00000000,
0x00004000,,, ESG3)
// System BIOS (0xf0000-0xfffff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x000f0000, 0x000fffff, 0x00000000,
0x00010000,,, FSEG)
// PCI Memory Region (Top of memory-0xfebfffff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0x00000000, 0xfebfffff, 0x00000000,
0xfec00000,,, PM01)
// TPM Area (0xfed40000-0xfed44fff)
DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
Cacheable, ReadWrite,
0x00000000, 0xfed40000, 0xfed44fff, 0x00000000,
0x00005000,,, TPMR)
})
Method (_CRS, 0, Serialized)
{
// Find PCI resource area in MCRS
CreateDwordField(MCRS, ^PM01._MIN, PMIN)
CreateDwordField(MCRS, ^PM01._MAX, PMAX)
CreateDwordField(MCRS, ^PM01._LEN, PLEN)
// Fix up PCI memory region
// Start with Top of Lower Usable DRAM
Local0 = ^MCHC.TLUD
Local0 >>= 4
Local1 = ^MCHC.TUUD
// Check if ME base is equal
If (Local0 == Local1) {
// Use Top Of Memory instead
Local0 = ^MCHC.TOM
Local0 >>= 6
}
Local0 <<= 20
PMIN = Local0
PLEN = PMAX - PMIN + 1
Return (MCRS)
}
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