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/* SPDX-License-Identifier: GPL-2.0-only */
#include <intelblocks/pcr.h>
/*
* Calculate PCR register base at specified PID
* Arg0 - PCR Port ID
*/
Method (PCRB, 1, NotSerialized)
{
Return (CONFIG_PCR_BASE_ADDRESS + (Arg0 << PCR_PORTID_SHIFT))
}
/*
* Read a PCR register at specified PID and offset
* Arg0 - PCR Port ID
* Arg1 - Register Offset
*/
Method (PCRR, 2, Serialized)
{
OperationRegion (PCRD, SystemMemory, PCRB (Arg0) + Arg1, 4)
Field (PCRD, DWordAcc, NoLock, Preserve)
{
DATA, 32
}
Return (DATA)
}
/*
* AND a value with PCR register at specified PID and offset
* Arg0 - PCR Port ID
* Arg1 - Register Offset
* Arg2 - Value to AND
*/
Method (PCRA, 3, Serialized)
{
OperationRegion (PCRD, SystemMemory, PCRB (Arg0) + Arg1, 4)
Field (PCRD, DWordAcc, NoLock, Preserve)
{
DATA, 32
}
DATA &= Arg2
/*
* After every write one needs to read an innocuous register
* to ensure the writes are completed for certain ports. This is done
* for all ports so that the callers don't need the per-port knowledge
* for each transaction.
*/
PCRR (Arg0, Arg1)
}
/*
* OR a value with PCR register at specified PID and offset
* Arg0 - PCR Port ID
* Arg1 - Register Offset
* Arg2 - Value to OR
*/
Method (PCRO, 3, Serialized)
{
OperationRegion (PCRD, SystemMemory, PCRB (Arg0) + Arg1, 4)
Field (PCRD, DWordAcc, NoLock, Preserve)
{
DATA, 32
}
DATA |= Arg2
/*
* After every write one needs to read an innocuous register
* to ensure the writes are completed for certain ports. This is done
* for all ports so that the callers don't need the per-port knowledge
* for each transaction.
*/
PCRR (Arg0, Arg1)
}
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