| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| |
| Name(_HID, EISAID("PNP0A08")) /* PCIe */ |
| Name(_CID, EISAID("PNP0A03")) /* PCI */ |
| |
| Device (MCHC) |
| { |
| Name (_ADR, 0x00000000) /*Dev0 Func0 */ |
| |
| OperationRegion (MCHP, PCI_Config, 0x00, 0x100) |
| Field (MCHP, DWordAcc, NoLock, Preserve) |
| { |
| Offset(0x60), |
| MCNF, 32, /* PCI MMCONF base */ |
| Offset (0xA8), |
| TUUD, 64, /* Top of Upper Used Memory */ |
| Offset(0xB4), |
| BGSM, 32, /* Base of Graphics Stolen Memory */ |
| Offset(0xBC), |
| TLUD, 32, /* Top of Low Usable DRAM */ |
| } |
| } |
| |
| /* Current Resource Settings */ |
| Method (_CRS, 0, Serialized) |
| { |
| Name (MCRS, ResourceTemplate() |
| { |
| /* Bus Numbers */ |
| WordBusNumber (ResourceProducer, MinFixed, MaxFixed, PosDecode, |
| 0x0000, 0x0000, 0x00ff, 0x0000, 0x0100,,,) |
| |
| /* IO Region 0 */ |
| DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange, |
| 0x0000, 0x0000, 0x0cf7, 0x0000, 0x0cf8,,,) |
| |
| /* PCI Config Space */ |
| Io (Decode16, 0x0cf8, 0x0cf8, 0x0001, 0x0008) |
| |
| /* IO Region 1 */ |
| DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange, |
| 0x0000, 0x01000, 0xffff, 0x0000, 0xf000,,,) |
| |
| /* VGA memory (0xa0000-0xbffff) */ |
| DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, |
| Cacheable, ReadWrite, |
| 0x00000000, 0x000a0000, 0x000bffff, 0x00000000, |
| 0x00020000,,,) |
| |
| /* Data and GFX stolen memory */ |
| DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, |
| Cacheable, ReadWrite, |
| 0x00000000, 0x3be00000, 0x3fffffff, 0x00000000, |
| 0x04200000,,, STOM) |
| |
| /* |
| * PCI MMIO Region (TOLUD - PCI extended base MMCONF) |
| * This assumes that MMCONF is placed after PCI config space, |
| * and that no resources are allocated after the MMCONF region. |
| * This works, since MMCONF is hardcoded to 0xe00000000. |
| */ |
| DWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, |
| NonCacheable, ReadWrite, |
| 0x00000000, 0x00000000, 0x00000000, 0x00000000, |
| 0x00000000,,, PM01) |
| |
| /* PCI Memory Region (TOUUD - (TOUUD + ABOVE_4G_MMIO_SIZE)) */ |
| QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed, |
| NonCacheable, ReadWrite, |
| 0x00000000, 0x10000, 0x1ffff, 0x00000000, |
| 0x10000,,, PM02) |
| }) |
| |
| /* Find PCI resource area in MCRS */ |
| CreateDwordField (MCRS, PM01._MIN, PMIN) |
| CreateDwordField (MCRS, PM01._MAX, PMAX) |
| CreateDwordField (MCRS, PM01._LEN, PLEN) |
| |
| /* Read C-Unit PCI CFG Reg. 0xBC for TOLUD (shadow from B-Unit) */ |
| PMIN = \_SB.PCI0.MCHC.TLUD & 0xFFF00000 |
| /* Read MMCONF base */ |
| PMAX = \_SB.PCI0.MCHC.MCNF & 0xF0000000 |
| |
| /* Calculate PCI MMIO Length */ |
| PLEN = PMAX - PMIN + 1 |
| |
| /* Find GFX resource area in GCRS */ |
| CreateDwordField(MCRS, STOM._MIN, GMIN) |
| CreateDwordField(MCRS, STOM._MAX, GMAX) |
| CreateDwordField(MCRS, STOM._LEN, GLEN) |
| |
| /* Read BGSM */ |
| GMIN = \_SB.PCI0.MCHC.BGSM & 0xFFF00000 |
| |
| /* Read TOLUD */ |
| GMAX = \_SB.PCI0.MCHC.TLUD & 0xFFF00000 |
| GMAX-- |
| GLEN = GMAX - GMIN + 1 |
| |
| /* Patch PM02 range based on Memory Size */ |
| If (A4GS == 0) { |
| CreateQwordField (MCRS, PM02._LEN, MSEN) |
| MSEN = 0 |
| } Else { |
| CreateQwordField (MCRS, PM02._MIN, MMIN) |
| CreateQwordField (MCRS, PM02._MAX, MMAX) |
| CreateQwordField (MCRS, PM02._LEN, MLEN) |
| /* Set 64bit MMIO resource base and length */ |
| MLEN = A4GS |
| MMIN = A4GB |
| MMAX = MMIN + MLEN - 1 |
| } |
| |
| Return (MCRS) |
| } |
| |
| /* GFX 00:02.0 */ |
| #include <drivers/intel/gma/acpi/gfx.asl> |