src/vendorcode/amd/agesa/f14/Proc/GNB/PCIe/PcieLateInit.c

/* $NoKeywords:$ */
/**
 * @file
 *
 * Pre-training PCIe subsystem initialization routines.
 *
 *
 *
 * @xrefitem bom "File Content Label" "Release Content"
 * @e project:     AGESA
 * @e sub-project: GNB
 * @e \$Revision: 39275 $   @e \$Date: 2010-10-09 08:22:05 +0800 (Sat, 09 Oct 2010) $
 *
 */
/*
 *****************************************************************************
 *
 * Copyright (c) 2011, Advanced Micro Devices, Inc.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Advanced Micro Devices, Inc. nor the names of 
 *       its contributors may be used to endorse or promote products derived 
 *       from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * ***************************************************************************
 *
 */

/*----------------------------------------------------------------------------------------
 *                             M O D U L E S    U S E D
 *----------------------------------------------------------------------------------------
 */

#include  "AGESA.h"
#include  "Ids.h"
#include  "Gnb.h"
#include  "GnbPcie.h"
#include  "PcieLateInit.h"
#include  "PcieFamilyServices.h"
#include  GNB_MODULE_DEFINITIONS (GnbCommonLib)
#include  GNB_MODULE_DEFINITIONS (GnbPcieInitLibV1)
#include  GNB_MODULE_DEFINITIONS (GnbPcieConfig)
#include  "GnbRegistersON.h"
#include  "Filecode.h"
#define FILECODE PROC_GNB_PCIE_PCIELATEINIT_FILECODE
/*----------------------------------------------------------------------------------------
 *                   D E F I N I T I O N S    A N D    M A C R O S
 *----------------------------------------------------------------------------------------
 */


/*----------------------------------------------------------------------------------------
 *                  T Y P E D E F S     A N D     S T R U C T U  R E S
 *----------------------------------------------------------------------------------------
 */


/*----------------------------------------------------------------------------------------
 *           P R O T O T Y P E S     O F     L O C A L     F U  N C T I O N S
 *----------------------------------------------------------------------------------------
 */

VOID
PciePwrPowerDownPllInL1 (
  IN       PCIe_WRAPPER_CONFIG    *Wrapper,
  IN       PCIe_PLATFORM_CONFIG   *Pcie
  );

AGESA_STATUS
PcieLateInitCallback (
  IN       PCIe_WRAPPER_CONFIG           *Wrapper,
  IN OUT   VOID                          *Buffer,
  IN       PCIe_PLATFORM_CONFIG          *Pcie
  );

/*----------------------------------------------------------------------------------------*/
/**
 * Power down inactive lanes
 *
 *
 * @param[in]  Wrapper         Pointer to wrapper config descriptor
 * @param[in]  Pcie            Pointer to global PCIe configuration
 */

VOID
PciePwrPowerDownPllInL1 (
  IN       PCIe_WRAPPER_CONFIG    *Wrapper,
  IN       PCIe_PLATFORM_CONFIG   *Pcie
  )
{

  UINT32              LaneBitmapForPllOffInL1;
  UINT8               PllPowerUpLatency;
  IDS_HDT_CONSOLE (GNB_TRACE, "PciePwrPowerDownPllInL1 Enter\n");
  PllPowerUpLatency = PcieFmPifGetPllPowerUpLatency (Wrapper, Pcie);
  LaneBitmapForPllOffInL1 = PcieLanesToPowerDownPllInL1 (PllPowerUpLatency, Wrapper, Pcie);
  if (LaneBitmapForPllOffInL1 != 0) {
    PcieFmPifSetPllModeForL1 (LaneBitmapForPllOffInL1, Wrapper, Pcie);
  }
  IDS_HDT_CONSOLE (GNB_TRACE, "PciePwrPowerDownPllInL1 Exir\n");
}


/*----------------------------------------------------------------------------------------*/
/**
 * Per wrapper Pcie Late Init.
 *
 *
 * @param[in]  Wrapper         Pointer to wrapper configuration descriptor
 * @param[in]  Buffer          Pointer buffer
 * @param[in]  Pcie            Pointer to global PCIe configuration
 */
AGESA_STATUS
PcieLateInitCallback (
  IN       PCIe_WRAPPER_CONFIG           *Wrapper,
  IN OUT   VOID                          *Buffer,
  IN       PCIe_PLATFORM_CONFIG          *Pcie
  )
{
  PciePwrPowerDownUnusedLanes (Wrapper, Pcie);
  PciePwrPowerDownPllInL1 (Wrapper, Pcie);
  PciePwrClockGating (Wrapper, Pcie);
  PcieLockRegisters (Wrapper, Pcie);
  return AGESA_SUCCESS;
}

/*----------------------------------------------------------------------------------------*/
/**
 * Pcie Late Init
 *
 *   Late PCIe initialization
 *
 * @param[in]  Pcie                Pointer to global PCIe configuration
 * @retval     AGESA_SUCCESS       Topology successfully mapped
 * @retval     AGESA_ERROR         Topology can not be mapped
 */

AGESA_STATUS
PcieLateInit (
  IN      PCIe_PLATFORM_CONFIG  *Pcie
  )
{
  AGESA_STATUS        Status;
  IDS_HDT_CONSOLE (GNB_TRACE, "PcieLateInit Enter\n");
  Status = PcieConfigRunProcForAllWrappers (DESCRIPTOR_ALL_WRAPPERS, PcieLateInitCallback, NULL, Pcie);
  IDS_HDT_CONSOLE (GNB_TRACE, "PcieLateInit Exit [0x%x]\n", Status);
  return  Status;
}