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/* SPDX-License-Identifier: GPL-2.0-or-later */
Name (_HID, EisaId("PNP0A08")) /* PCI Express Bus */
Name (_CID, EisaId("PNP0A03")) /* PCI Bus */
Device (MCHC)
{
Name (_ADR, 0x00000000) /* Device 0 Function 0 */
OperationRegion (MCHP, PCI_Config, 0x00, 0x100)
Field (MCHP, DWordAcc, NoLock, Preserve)
{
Offset (0x60), /* PCIEXBAR (0:0:0:60) */
PXEN, 1, /* Enable */
PXSZ, 2, /* PCI Express Size */
, 25,
PXBR, 11, /* PCI Express Base Address */
Offset(0xB4),
BGSM, 32, /* Base of Graphics Stolen Memory */
Offset (0xbc), /* TOLUD (0:0:0:bc) */
, 20,
TLUD, 12, /* Top of Lower Usable DRAM */
}
}
External (A4GS, IntObj)
External (A4GB, IntObj)
/* 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: 0x0000 - 0x0cf7 */
DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
0x0000, 0x0000, 0x0cf7, 0x0000, 0x0cf8)
/* PCI Config Space */
Io (Decode16, 0x0cf8, 0x0cf8, 0x0001, 0x0008)
/* IO Region 1: 0x1000 - 0xffff */
DWordIO (ResourceProducer, MinFixed, MaxFixed, PosDecode, EntireRange,
0x0000, 0x01000, 0xffff, 0x0000, 0xf000)
/*
* Descriptor: Legacy VGA video RAM
* Start: 0xa0000
* End: 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 above 4 GiB
* (TOUUD - (TOUUD + ABOVE_4G_MMIO_SIZE))
*/
QWordMemory (ResourceProducer, PosDecode, MinFixed, MaxFixed,
NonCacheable, ReadWrite,
0x00000000, 0x00010000, 0x0001ffff, 0x00000000,
0x00010000,,, 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 = ^MCHC.TLUD << 20
/* Use PCR base to ensure PMAX below GPIO controllers attached to _SB */
PMAX = CONFIG_PCR_BASE_ADDRESS & 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 = ^MCHC.TLUD << 20
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)
}
Device (PDRC) /* PCI Device Resource Consumption */
{
Name (_HID, EisaId("PNP0C02"))
Name (_UID, 1)
Method (_CRS, 0, Serialized)
{
Name (BUF0, ResourceTemplate ()
{
/* PCI Express BAR */
Memory32Fixed (ReadWrite,
CONFIG_ECAM_MMCONF_BASE_ADDRESS,
CONFIG_ECAM_MMCONF_LENGTH, PCIX)
/* Local APIC range (0xfee0_0000 to 0xfeef_ffff) */
Memory32Fixed (ReadOnly, 0x0fee00000, 0x00010000, LIOH)
})
Return (BUF0)
}
}
/* GFX 00:02.0 */
#include <drivers/intel/gma/acpi/gfx.asl>
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