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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
/*
Scope (_SB) {
Device(PCI0) {
Device(IDEC) {
Name(_ADR, 0x00140001)
#include "ide.asl"
}
}
}
*/
/* Some timing tables */
Name(UDTT, Package(){ /* Udma timing table */
120, 90, 60, 45, 30, 20, 15, 0 /* UDMA modes 0 -> 6 */
})
Name(MDTT, Package(){ /* MWDma timing table */
480, 150, 120, 0 /* Legacy DMA modes 0 -> 2 */
})
Name(POTT, Package(){ /* Pio timing table */
600, 390, 270, 180, 120, 0 /* PIO modes 0 -> 4 */
})
/* Some timing register value tables */
Name(MDRT, Package(){ /* MWDma timing register table */
0x77, 0x21, 0x20, 0xFF /* Legacy DMA modes 0 -> 2 */
})
Name(PORT, Package(){
0x99, 0x47, 0x34, 0x22, 0x20, 0x99 /* PIO modes 0 -> 4 */
})
OperationRegion(ICRG, PCI_Config, 0x40, 0x20) /* ide control registers */
Field(ICRG, AnyAcc, NoLock, Preserve)
{
PPTS, 8, /* Primary PIO Slave Timing */
PPTM, 8, /* Primary PIO Master Timing */
OFFSET(0x04), PMTS, 8, /* Primary MWDMA Slave Timing */
PMTM, 8, /* Primary MWDMA Master Timing */
OFFSET(0x08), PPCR, 8, /* Primary PIO Control */
OFFSET(0x0A), PPMM, 4, /* Primary PIO master Mode */
PPSM, 4, /* Primary PIO slave Mode */
OFFSET(0x14), PDCR, 2, /* Primary UDMA Control */
OFFSET(0x16), PDMM, 4, /* Primary UltraDMA Mode */
PDSM, 4, /* Primary UltraDMA Mode */
}
Method(GTTM, 1) /* get total time*/
{
Store(And(Arg0, 0x0F), Local0) /* Recovery Width */
Increment(Local0)
Store(ShiftRight(Arg0, 4), Local1) /* Command Width */
Increment(Local1)
Return(Multiply(30, Add(Local0, Local1)))
}
Device(PRID)
{
Name (_ADR, Zero)
Method(_GTM, 0, Serialized)
{
NAME(OTBF, Buffer(20) { /* out buffer */
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00
})
CreateDwordField(OTBF, 0, PSD0) /* PIO spd0 */
CreateDwordField(OTBF, 4, DSD0) /* DMA spd0 */
CreateDwordField(OTBF, 8, PSD1) /* PIO spd1 */
CreateDwordField(OTBF, 12, DSD1) /* DMA spd1 */
CreateDwordField(OTBF, 16, BFFG) /* buffer flags */
/* Just return if the channel is disabled */
If(And(PPCR, 0x01)) { /* primary PIO control */
Return(OTBF)
}
/* Always tell them independent timing available and IOChannelReady used on both drives */
Or(BFFG, 0x1A, BFFG)
Store(GTTM(PPTM), PSD0) /* save total time of primary PIO master timming to PIO spd0 */
Store(GTTM(PPTS), PSD1) /* save total time of primary PIO slave Timing to PIO spd1 */
If(And(PDCR, 0x01)) { /* It's under UDMA mode */
Or(BFFG, 0x01, BFFG)
Store(DerefOf(Index(UDTT, PDMM)), DSD0)
}
Else {
Store(GTTM(PMTM), DSD0) /* Primary MWDMA Master Timing, DmaSpd0 */
}
If(And(PDCR, 0x02)) { /* It's under UDMA mode */
Or(BFFG, 0x04, BFFG)
Store(DerefOf(Index(UDTT, PDSM)), DSD1)
}
Else {
Store(GTTM(PMTS), DSD1) /* Primary MWDMA Slave Timing, DmaSpd0 */
}
Return(OTBF) /* out buffer */
} /* End Method(_GTM) */
Method(_STM, 3, Serialized)
{
NAME(INBF, Buffer(20) { /* in buffer */
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00
})
CreateDwordField(INBF, 0, PSD0) /* PIO spd0 */
CreateDwordField(INBF, 4, DSD0) /* PIO spd0 */
CreateDwordField(INBF, 8, PSD1) /* PIO spd1 */
CreateDwordField(INBF, 12, DSD1) /* DMA spd1 */
CreateDwordField(INBF, 16, BFFG) /*buffer flag */
Store(Match(POTT, MLE, PSD0, MTR, 0, 0), Local0)
Divide(Local0, 5, PPMM,) /* Primary PIO master Mode */
Store(Match(POTT, MLE, PSD1, MTR, 0, 0), Local1)
Divide(Local1, 5, PPSM,) /* Primary PIO slave Mode */
Store(DerefOf(Index(PORT, Local0)), PPTM) /* Primary PIO Master Timing */
Store(DerefOf(Index(PORT, Local1)), PPTS) /* Primary PIO Slave Timing */
If(And(BFFG, 0x01)) { /* Drive 0 is under UDMA mode */
Store(Match(UDTT, MLE, DSD0, MTR, 0, 0), Local0)
Divide(Local0, 7, PDMM,)
Or(PDCR, 0x01, PDCR)
}
Else {
If(LNotEqual(DSD0, 0xFFFFFFFF)) {
Store(Match(MDTT, MLE, DSD0, MTR, 0, 0), Local0)
Store(DerefOf(Index(MDRT, Local0)), PMTM)
}
}
If(And(BFFG, 0x04)) { /* Drive 1 is under UDMA mode */
Store(Match(UDTT, MLE, DSD1, MTR, 0, 0), Local0)
Divide(Local0, 7, PDSM,)
Or(PDCR, 0x02, PDCR)
}
Else {
If(LNotEqual(DSD1, 0xFFFFFFFF)) {
Store(Match(MDTT, MLE, DSD1, MTR, 0, 0), Local0)
Store(DerefOf(Index(MDRT, Local0)), PMTS)
}
}
/* Return(INBF) */
} /*End Method(_STM) */
Device(MST)
{
Name(_ADR, 0)
Method(_GTF, 0, Serialized) {
Name(CMBF, Buffer(21) {
0x03, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xEF,
0x03, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xEF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF5
})
CreateByteField(CMBF, 1, POMD)
CreateByteField(CMBF, 8, DMMD)
CreateByteField(CMBF, 5, CMDA)
CreateByteField(CMBF, 12, CMDB)
CreateByteField(CMBF, 19, CMDC)
Store(0xA0, CMDA)
Store(0xA0, CMDB)
Store(0xA0, CMDC)
Or(PPMM, 0x08, POMD)
If(And(PDCR, 0x01)) {
Or(PDMM, 0x40, DMMD)
}
Else {
Store(Match
(MDTT, MLE, GTTM(PMTM),
MTR, 0, 0), Local0)
If(LLess(Local0, 3)) {
Or(0x20, Local0, DMMD)
}
}
Return(CMBF)
}
} /* End Device(MST) */
Device(SLAV)
{
Name(_ADR, 1)
Method(_GTF, 0, Serialized) {
Name(CMBF, Buffer(21) {
0x03, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xEF,
0x03, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xEF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF5
})
CreateByteField(CMBF, 1, POMD)
CreateByteField(CMBF, 8, DMMD)
CreateByteField(CMBF, 5, CMDA)
CreateByteField(CMBF, 12, CMDB)
CreateByteField(CMBF, 19, CMDC)
Store(0xB0, CMDA)
Store(0xB0, CMDB)
Store(0xB0, CMDC)
Or(PPSM, 0x08, POMD)
If(And(PDCR, 0x02)) {
Or(PDSM, 0x40, DMMD)
}
Else {
Store(Match
(MDTT, MLE, GTTM(PMTS),
MTR, 0, 0), Local0)
If(LLess(Local0, 3)) {
Or(0x20, Local0, DMMD)
}
}
Return(CMBF)
}
} /* End Device(SLAV) */
}
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