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/** @file
Initializes the PCH HD Audio ACPI Tables.
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <PchInit.h>
#include <Guid/Acpi.h>
#include <Library/PcdLib.h>
#include <Library/PchHdaLib.h>
PCH_HDA_NHLT_ENDPOINTS mPchHdaNhltEndpoints[HdaEndpointMax] =
{
{HdaDmicX1, B_HDA_DMIC_1CH_48KHZ_16BIT_FORMAT, FALSE},
{HdaDmicX2, (B_HDA_DMIC_2CH_48KHZ_16BIT_FORMAT | B_HDA_DMIC_2CH_48KHZ_32BIT_FORMAT), FALSE},
{HdaDmicX4, (B_HDA_DMIC_4CH_48KHZ_16BIT_FORMAT | B_HDA_DMIC_4CH_48KHZ_32BIT_FORMAT), FALSE},
{HdaBtRender, (B_HDA_BT_NARROWBAND_FORMAT | B_HDA_BT_WIDEBAND_FORMAT | B_HDA_BT_A2DP_FORMAT), FALSE},
{HdaBtCapture, (B_HDA_BT_NARROWBAND_FORMAT | B_HDA_BT_WIDEBAND_FORMAT), FALSE},
{HdaI2sRender1, (B_HDA_I2S_RTK298_RENDER_4CH_48KHZ_24BIT_FORMAT), FALSE},
{HdaI2sRender2, (B_HDA_I2S_RTK298_RENDER_4CH_48KHZ_24BIT_FORMAT), FALSE},
{HdaI2sCapture, (B_HDA_I2S_RTK298_CAPTURE_4CH_48KHZ_24BIT_FORMAT), FALSE}
};
/**
Retrieves address of NHLT table from XSDT/RSDT.
@retval NHLT_ACPI_TABLE* Pointer to NHLT table if found
@retval NULL NHLT could not be found
**/
NHLT_ACPI_TABLE *
LocateNhltAcpiTable (
VOID
)
{
EFI_ACPI_3_0_ROOT_SYSTEM_DESCRIPTION_POINTER *Rsdp;
EFI_ACPI_DESCRIPTION_HEADER *Xsdt;
NHLT_ACPI_TABLE *Nhlt;
UINTN Index;
UINT64 Data64;
EFI_STATUS Status;
Rsdp = NULL;
Xsdt = NULL;
Nhlt = NULL;
///
/// Find the AcpiSupport protocol returns RSDP (or RSD PTR) address.
///
DEBUG ((DEBUG_INFO, "LocateNhltAcpiTable() Start\n"));
Status = EfiGetSystemConfigurationTable (&gEfiAcpiTableGuid, (VOID *) &Rsdp);
if (EFI_ERROR (Status) || (Rsdp == NULL)) {
DEBUG ((DEBUG_ERROR, "EFI_ERROR or Rsdp == NULL\n"));
return NULL;
}
Xsdt = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN) Rsdp->XsdtAddress;
if (Xsdt == NULL || Xsdt->Signature != EFI_ACPI_5_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE) {
// If XSDT has not been found, check RSDT
Xsdt = (EFI_ACPI_DESCRIPTION_HEADER *) (UINTN) Rsdp->RsdtAddress;
if (Xsdt == NULL || Xsdt->Signature != EFI_ACPI_5_0_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE) {
DEBUG ((DEBUG_ERROR, "XSDT/RSDT == NULL or wrong signature\n"));
return NULL;
}
}
for (Index = sizeof (EFI_ACPI_DESCRIPTION_HEADER); Index < Xsdt->Length; Index = Index + sizeof (UINT64)) {
Data64 = *(UINT64 *) ((UINT8 *) Xsdt + Index);
Nhlt = (NHLT_ACPI_TABLE *) (UINTN) Data64;
if (Nhlt->Header.Signature == NHLT_ACPI_TABLE_SIGNATURE) {
break;
}
}
if (Nhlt == NULL || Nhlt->Header.Signature != NHLT_ACPI_TABLE_SIGNATURE) {
DEBUG ((DEBUG_ERROR, "Nhlt == NULL or wrong signature\n"));
return NULL;
}
DEBUG ((DEBUG_INFO, "Found NhltTable, Address = 0x%016x\n", Nhlt));
return Nhlt;
}
/**
Constructs and installs NHLT table.
@retval EFI_SUCCESS ACPI Table installed successfully
@retval EFI_UNSUPPORTED ACPI Table protocol not found
**/
EFI_STATUS
PublishNhltAcpiTable (
VOID
)
{
UINTN AcpiTableKey;
EFI_ACPI_TABLE_PROTOCOL *AcpiTable;
NHLT_ACPI_TABLE *NhltTable;
UINT32 TableLength;
EFI_STATUS Status;
AcpiTable = NULL;
NhltTable = NULL;
AcpiTableKey = 0;
DEBUG ((DEBUG_INFO, "PublishNhltAcpiTable() Start\n"));
//
// Locate ACPI support protocol
//
Status = gBS->LocateProtocol (&gEfiAcpiTableProtocolGuid, NULL, (VOID **) &AcpiTable);
if ( EFI_ERROR (Status) || AcpiTable == NULL) {
return EFI_UNSUPPORTED;
}
NhltConstructor (mPchHdaNhltEndpoints, &NhltTable, &TableLength);
NhltAcpiHeaderConstructor (NhltTable, TableLength);
Status = AcpiTable->InstallAcpiTable (AcpiTable, NhltTable, NhltTable->Header.Length, &AcpiTableKey);
DEBUG ((DEBUG_INFO, "PublishNhltAcpiTable() End\n"));
return Status;
}
/**
Sets NVS ACPI variables for _DSM accordingly to policy.
@param[in] NhltAcpiTableAddress
@param[in] NhltAcpiTableLength
@param[in] DspFeatureMask
**/
VOID
UpdateHdaAcpiData (
IN UINT64 NhltAcpiTableAddress,
IN UINT32 NhltAcpiTableLength,
IN UINT32 DspFeatureMask
)
{
DEBUG ((DEBUG_INFO, "UpdateHdaAcpiData():\n NHLT Address = 0x%016x, Length = 0x%08x\n", NhltAcpiTableAddress, NhltAcpiTableLength));
DEBUG ((DEBUG_INFO, " FeatureMask = 0x%08x\n", DspFeatureMask));
mPchNvsAreaProtocol.Area->NHLA = NhltAcpiTableAddress;
mPchNvsAreaProtocol.Area->NHLL = NhltAcpiTableLength;
mPchNvsAreaProtocol.Area->ADFM = DspFeatureMask;
}
/**
Initialize and publish NHLT (Non-HDA Link Table), update NVS variables.
@param[in] *HdaConfig
@retval EFI_SUCCESS The function completed successfully
**/
EFI_STATUS
SetHdaAcpiTable (
IN CONST HDAUDIO_HOB *HdaConfig
)
{
NHLT_ACPI_TABLE *NhltTable;
EFI_STATUS Status;
NhltTable = NULL;
switch (HdaConfig->DspEndpointDmic) {
case PchHdaDmic1chArray:
mPchHdaNhltEndpoints[HdaDmicX1].Enable = TRUE;
break;
case PchHdaDmic2chArray:
mPchHdaNhltEndpoints[HdaDmicX2].Enable = TRUE;
break;
case PchHdaDmic4chArray:
mPchHdaNhltEndpoints[HdaDmicX4].Enable = TRUE;
break;
case PchHdaDmicDisabled:
default:
mPchHdaNhltEndpoints[HdaDmicX2].Enable = FALSE;
mPchHdaNhltEndpoints[HdaDmicX4].Enable = FALSE;
}
if (HdaConfig->DspEndpointBluetooth) {
mPchHdaNhltEndpoints[HdaBtRender].Enable = TRUE;
mPchHdaNhltEndpoints[HdaBtCapture].Enable = TRUE;
}
if (HdaConfig->DspEndpointI2s) {
mPchHdaNhltEndpoints[HdaI2sRender1].Enable = TRUE;
mPchHdaNhltEndpoints[HdaI2sRender2].Enable = TRUE;
mPchHdaNhltEndpoints[HdaI2sCapture].Enable = TRUE;
}
Status = PublishNhltAcpiTable ();
NhltTable = LocateNhltAcpiTable ();
if (NhltTable == NULL) {
return EFI_LOAD_ERROR;
}
UpdateHdaAcpiData ((UINT64) (UINTN) NhltTable, (UINT32) (NhltTable->Header.Length), HdaConfig->DspFeatureMask);
DEBUG_CODE ( NhltAcpiTableDump (NhltTable); );
return Status;
}
/**
Initialize Intel High Definition Audio ACPI Tables
@retval EFI_SUCCESS The function completed successfully
@retval EFI_LOAD_ERROR ACPI table cannot be installed
@retval EFI_UNSUPPORTED ACPI table not set because DSP is disabled
**/
EFI_STATUS
PchHdAudioAcpiInit (
VOID
)
{
EFI_STATUS Status;
CONST HDAUDIO_HOB *HdaConfig;
UINTN HdaPciBase;
DEBUG ((DEBUG_INFO, "PchHdAudioAcpiInit() Start\n"));
HdaConfig = &mPchConfigHob->HdAudio;
HdaPciBase = MmPciBase (
DEFAULT_PCI_BUS_NUMBER_PCH,
PCI_DEVICE_NUMBER_PCH_HDA,
PCI_FUNCTION_NUMBER_PCH_HDA
);
if ((MmioRead16 (HdaPciBase + PCI_VENDOR_ID_OFFSET) == 0xFFFF) || (HdaConfig->DspEnable == FALSE)) {
// Do not set ACPI tables if HDAudio is Function disabled or DSP is disabled
DEBUG ((DEBUG_INFO, "AudioDSP: Non-HDAudio ACPI Table (NHLT) not set!\n"));
return EFI_UNSUPPORTED;
}
Status = SetHdaAcpiTable (HdaConfig);
DEBUG ((DEBUG_INFO, "PchHdAudioAcpiInit() End - Status = %r\n", Status));
return Status;
}
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