| /** |
| * @file |
| * |
| * Config Southbridge GPP controller |
| * |
| * Init GPP features. |
| * |
| * @xrefitem bom "File Content Label" "Release Content" |
| * @e project: CIMx-SB |
| * @e sub-project |
| * @e \$Revision:$ @e \$Date:$ |
| * |
| */ |
| /* |
| ***************************************************************************** |
| * |
| * 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. |
| * |
| **************************************************************************** |
| */ |
| #include "SbPlatform.h" |
| #include "cbtypes.h" |
| #include "AmdSbLib.h" |
| |
| // |
| // Declaration of external functions |
| // |
| VOID sbGppDynamicPowerSaving (IN AMDSBCFG* pConfig ); |
| VOID sbGppForceGen1 (IN AMDSBCFG* pConfig, IN CONST UINT8 ActivePorts); |
| VOID sbGppForceGen2 (IN AMDSBCFG* pConfig, IN CONST UINT8 ActivePorts); |
| UINT8 GppPortPollingLtssm (IN AMDSBCFG* pConfig, IN UINT8 ActivePorts, IN BOOLEAN IsGen2); |
| |
| |
| /** |
| * GPP hot plug handler |
| * |
| * |
| * @param[in] pConfig Southbridge configuration structure pointer. |
| * @param[in] HpPort The hot plug port number. |
| * |
| */ |
| static VOID |
| sbGppHotPlugSmiProcess ( |
| IN AMDSBCFG* pConfig, |
| IN UINT32 HpPort |
| ) |
| { |
| UINT8 FailedPort; |
| |
| // First restore GPP pads if needed |
| if (pConfig->GppDynamicPowerSaving && pConfig->AlinkPhyPllPowerDown && pConfig->GppPhyPllPowerDown) { |
| rwAlink (SB_ABCFG_REGC0 | (UINT32) (ABCFG << 29), ~(UINT32) (1 << (12 + HpPort)), 0); |
| rwAlink (RC_INDXC_REG65, ~(UINT32) (0x101 << HpPort), 0); |
| SbStall (1000); |
| } |
| |
| FailedPort = (UINT8) (1 << HpPort); |
| if (pConfig->GppGen2 && pConfig->GppGen2Strap) { |
| if (GppPortPollingLtssm (pConfig, FailedPort, TRUE)) { |
| sbGppForceGen1 (pConfig, FailedPort); |
| FailedPort = GppPortPollingLtssm (pConfig, FailedPort, FALSE); |
| } |
| } else { |
| sbGppForceGen1 (pConfig, FailedPort); |
| FailedPort = GppPortPollingLtssm (pConfig, FailedPort, FALSE); |
| } |
| } |
| |
| |
| /** |
| * GPP hot-unplug handler |
| * |
| * |
| * @param[in] pConfig Southbridge configuration structure pointer. |
| * @param[in] HpPort The hot plug port number. |
| * |
| */ |
| static VOID |
| sbGppHotUnplugSmiProcess ( |
| IN AMDSBCFG* pConfig, |
| IN UINT32 HpPort |
| ) |
| { |
| pConfig->PORTCONFIG[HpPort].PortCfg.PortDetected = FALSE; |
| |
| if (pConfig->GppGen2 && pConfig->GppGen2Strap) { |
| sbGppForceGen2 (pConfig, (UINT8) (1 << HpPort)); |
| } |
| |
| // 5.19.1 GPP Power Saving with Hot Unplug |
| if (pConfig->GppDynamicPowerSaving && pConfig->AlinkPhyPllPowerDown && pConfig->GppPhyPllPowerDown) { |
| rwAlink (SB_RCINDXP_REGA2 | HpPort << 24, ~(UINT32) (BIT17), BIT17); |
| rwAlink (SB_RCINDXP_REGA2 | HpPort << 24, ~(UINT32) (BIT8), BIT8); |
| rwAlink (SB_ABCFG_REGC0 | (UINT32) (ABCFG << 29), ~(UINT32) (1 << (12 + HpPort)), (1 << (12 + HpPort))); |
| rwAlink (SB_RCINDXP_REGA2 | HpPort << 24, ~(UINT32) (BIT17), 0); |
| |
| // Finally re-configure GPP pads if needed |
| sbGppDynamicPowerSaving (pConfig); |
| } |
| } |
| |
| |
| /** |
| * SMI handler for GPP hot-plug |
| * |
| * |
| * @param[in] pConfig Southbridge configuration structure pointer. |
| * @param[in] IsPlugged Is a card currently plugged in the GPP port? |
| * |
| */ |
| VOID |
| sbGppHotplugSmiCallback ( |
| IN AMDSBCFG* pConfig, |
| IN BOOLEAN IsPlugged |
| ) |
| { |
| UINT32 portNum; |
| UINT32 HpPort; |
| |
| if (!pConfig->GppFunctionEnable) { |
| return; |
| } |
| |
| HpPort = 0xff; |
| for (portNum = 0; portNum < MAX_GPP_PORTS; portNum++) { |
| if (pConfig->PORTCONFIG[portNum].PortCfg.PortHotPlug == TRUE) { |
| HpPort = portNum; |
| break; |
| } |
| } |
| if (HpPort == 0xff) { |
| return; |
| } |
| |
| if (IsPlugged) { |
| outPort80 (0x9C); |
| sbGppHotPlugSmiProcess (pConfig, HpPort); |
| } else { |
| outPort80 (0x9D); |
| sbGppHotUnplugSmiProcess (pConfig, HpPort); |
| } |
| } |
| |