system76-edk2/MdeModulePkg/Library/TraceHubDebugSysTLib/PeiTraceHubDebugSysTLib.c

/** @file
System prints Trace Hub message in PEI based on fixed PCDs and HOB.
System applies Trace Hub HOB once it detect gTraceHubDebugInfoHobGuid HOB.
Trace Hub PCDs will be applied if no HOB exist.

Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>

SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include <Base.h>
#include <Library/BaseLib.h>
#include <Library/PcdLib.h>
#include <Library/HobLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/TraceHubDebugSysTLib.h>
#include <Library/MipiSysTLib.h>
#include <Library/MipiSysTLib/mipi_syst.h>
#include <Guid/TraceHubDebugInfoHob.h>
#include "InternalTraceHubApiCommon.h"
#include "InternalTraceHubApi.h"

/**
  Write debug string to specified Trace Hub MMIO address.

  @param[in]  SeverityType     Severity type of input message.
  @param[in]  Buffer           A pointer to the data buffer.
  @param[in]  NumberOfBytes    The size of data buffer.

  @retval RETURN_SUCCESS      Data was written to Trace Hub.
  @retval Other               Failed to output Trace Hub message.
**/
RETURN_STATUS
EFIAPI
TraceHubSysTDebugWrite (
  IN TRACE_HUB_SEVERITY_TYPE  SeverityType,
  IN UINT8                    *Buffer,
  IN UINTN                    NumberOfBytes
  )
{
  MIPI_SYST_HANDLE  MipiSystHandle;
  MIPI_SYST_HEADER  MipiSystHeader;
  RETURN_STATUS     Status;
  UINT8             *DbgContext;
  UINTN             Index;
  UINT32            DbgInstCount;
  UINT8             *ThDebugInfo;

  if (NumberOfBytes == 0) {
    //
    // No data need to be written to Trace Hub
    //
    return RETURN_SUCCESS;
  }

  if (Buffer == NULL) {
    return RETURN_INVALID_PARAMETER;
  }

  DbgInstCount = CountThDebugInstance ();

  ZeroMem (&MipiSystHandle, sizeof (MIPI_SYST_HANDLE));
  MipiSystHandle.systh_header = &MipiSystHeader;

  Status = InitMipiSystHandle (&MipiSystHandle);
  if (RETURN_ERROR (Status)) {
    return Status;
  }

  DbgContext = (UINT8 *)GetFirstGuidHob (&gTraceHubDebugInfoHobGuid);
  if (DbgContext != NULL) {
    ThDebugInfo = GET_GUID_HOB_DATA (DbgContext);
  } else {
    ThDebugInfo = NULL;
  }

  for (Index = 0; Index < DbgInstCount; Index++) {
    Status = CheckWhetherToOutputMsg (
               &MipiSystHandle,
               ThDebugInfo,
               SeverityType,
               TraceHubDebugType
               );
    if (!RETURN_ERROR (Status)) {
      Status = MipiSystWriteDebug (
                 &MipiSystHandle,
                 SeverityType,
                 (UINT16)NumberOfBytes,
                 (CHAR8 *)Buffer
                 );
      if (RETURN_ERROR (Status)) {
        break;
      }
    }

    if (DbgContext != NULL) {
      DbgContext = (UINT8 *)GetNextGuidHob (&gTraceHubDebugInfoHobGuid, GET_NEXT_HOB (DbgContext));
      if (DbgContext == NULL) {
        break;
      }

      ThDebugInfo = GET_GUID_HOB_DATA (DbgContext);
    }
  }

  return Status;
}

/**
  Write catalog status code message to specified Trace Hub MMIO address.

  @param[in]  SeverityType     Severity type of input message.
  @param[in]  Id               Catalog ID.
  @param[in]  Guid             Driver Guid.

  @retval RETURN_SUCCESS      Data was written to Trace Hub.
  @retval Other               Failed to output Trace Hub message.
**/
RETURN_STATUS
EFIAPI
TraceHubSysTWriteCataLog64StatusCode (
  IN TRACE_HUB_SEVERITY_TYPE  SeverityType,
  IN UINT64                   Id,
  IN GUID                     *Guid
  )
{
  MIPI_SYST_HANDLE  MipiSystHandle;
  MIPI_SYST_HEADER  MipiSystHeader;
  UINT32            DbgInstCount;
  UINT8             *DbgContext;
  RETURN_STATUS     Status;
  UINTN             Index;
  UINT8             *ThDebugInfo;

  DbgInstCount = CountThDebugInstance ();

  ZeroMem (&MipiSystHandle, sizeof (MIPI_SYST_HANDLE));
  MipiSystHandle.systh_header = &MipiSystHeader;

  Status = InitMipiSystHandle (&MipiSystHandle);
  if (RETURN_ERROR (Status)) {
    return Status;
  }

  if (Guid != NULL) {
    SwapBytesGuid (Guid, (GUID *)(VOID *)&MipiSystHandle.systh_guid);
    MipiSystHandle.systh_tag.et_guid = 1;
  } else {
    MipiSystHandle.systh_tag.et_modunit = 2;
    MipiSystHandle.systh_tag.et_guid    = 0;
  }

  DbgContext = (UINT8 *)GetFirstGuidHob (&gTraceHubDebugInfoHobGuid);
  if (DbgContext != NULL) {
    ThDebugInfo = GET_GUID_HOB_DATA (DbgContext);
  } else {
    ThDebugInfo = NULL;
  }

  for (Index = 0; Index < DbgInstCount; Index++) {
    Status = CheckWhetherToOutputMsg (
               &MipiSystHandle,
               ThDebugInfo,
               SeverityType,
               TraceHubCatalogType
               );
    if (!RETURN_ERROR (Status)) {
      Status = MipiSystWriteCatalog (
                 &MipiSystHandle,
                 SeverityType,
                 Id
                 );
      if (RETURN_ERROR (Status)) {
        break;
      }
    }

    if (DbgContext != NULL) {
      DbgContext = (UINT8 *)GetNextGuidHob (&gTraceHubDebugInfoHobGuid, GET_NEXT_HOB (DbgContext));
      if (DbgContext == NULL) {
        break;
      }

      ThDebugInfo = GET_GUID_HOB_DATA (DbgContext);
    }
  }

  return Status;
}

/**
  Write catalog message to specified Trace Hub MMIO address.

  @param[in]  SeverityType   Severity type of input message.
  @param[in]  Id             Catalog ID.
  @param[in]  NumberOfParams Number of entries in argument list.
  @param[in]  ...            Catalog message parameters.

  @retval RETURN_SUCCESS      Data was written to Trace Hub.
  @retval Other               Failed to output Trace Hub message.
**/
RETURN_STATUS
EFIAPI
TraceHubSysTWriteCataLog64 (
  IN TRACE_HUB_SEVERITY_TYPE  SeverityType,
  IN UINT64                   Id,
  IN UINTN                    NumberOfParams,
  ...
  )
{
  MIPI_SYST_HANDLE  MipiSystHandle;
  MIPI_SYST_HEADER  MipiSystHeader;
  VA_LIST           Args;
  UINTN             Index;
  UINT32            DbgInstCount;
  UINT8             *DbgContext;
  RETURN_STATUS     Status;
  UINT8             *ThDebugInfo;

  DbgInstCount = 0;

  if (NumberOfParams > sizeof (MipiSystHandle.systh_param) / sizeof (UINT32)) {
    return RETURN_INVALID_PARAMETER;
  }

  DbgInstCount = CountThDebugInstance ();

  ZeroMem (&MipiSystHandle, sizeof (MIPI_SYST_HANDLE));
  MipiSystHandle.systh_header = &MipiSystHeader;

  Status = InitMipiSystHandle (&MipiSystHandle);
  if (RETURN_ERROR (Status)) {
    return Status;
  }

  MipiSystHandle.systh_param_count = (UINT32)NumberOfParams;
  VA_START (Args, NumberOfParams);
  for (Index = 0; Index < NumberOfParams; Index++) {
    MipiSystHandle.systh_param[Index] = VA_ARG (Args, UINT32);
  }

  VA_END (Args);

  DbgContext = (UINT8 *)GetFirstGuidHob (&gTraceHubDebugInfoHobGuid);
  if (DbgContext != NULL) {
    ThDebugInfo = GET_GUID_HOB_DATA (DbgContext);
  } else {
    ThDebugInfo = NULL;
  }

  for (Index = 0; Index < DbgInstCount; Index++) {
    Status = CheckWhetherToOutputMsg (
               &MipiSystHandle,
               ThDebugInfo,
               SeverityType,
               TraceHubCatalogType
               );
    if (!RETURN_ERROR (Status)) {
      Status = MipiSystWriteCatalog (
                 &MipiSystHandle,
                 SeverityType,
                 Id
                 );
      if (RETURN_ERROR (Status)) {
        break;
      }
    }

    if (DbgContext != NULL) {
      DbgContext = (UINT8 *)GetNextGuidHob (&gTraceHubDebugInfoHobGuid, GET_NEXT_HOB (DbgContext));
      if (DbgContext == NULL) {
        break;
      }

      ThDebugInfo = GET_GUID_HOB_DATA (DbgContext);
    }
  }

  return Status;
}