| /* $NoKeywords:$ */ |
| /** |
| * @file |
| * |
| * Link optimization support. |
| * |
| * @xrefitem bom "File Content Label" "Release Content" |
| * @e project: AGESA |
| * @e sub-project: HyperTransport |
| * @e \$Revision: 56279 $ @e \$Date: 2011-07-11 13:11:28 -0600 (Mon, 11 Jul 2011) $ |
| * |
| */ |
| /* |
| ***************************************************************************** |
| * |
| * Copyright (C) 2012 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. |
| * |
| * *************************************************************************** |
| * |
| */ |
| |
| /* |
| *---------------------------------------------------------------------------- |
| * MODULES USED |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| |
| |
| #include "AGESA.h" |
| #include "amdlib.h" |
| #include "Ids.h" |
| #include "Topology.h" |
| #include "htFeat.h" |
| #include "IdsHt.h" |
| #include "htInterface.h" |
| #include "htInterfaceGeneral.h" |
| #include "htNotify.h" |
| #include "htNb.h" |
| #include "htNbCommonHardware.h" |
| #include "htNbOptimization.h" |
| #include "Filecode.h" |
| CODE_GROUP (G1_PEICC) |
| RDATA_GROUP (G2_PEI) |
| |
| #define FILECODE PROC_HT_NBCOMMON_HTNBOPTIMIZATION_FILECODE |
| /*---------------------------------------------------------------------------- |
| * DEFINITIONS AND MACROS |
| * |
| *---------------------------------------------------------------------------- |
| */ |
| |
| /*************************************************************************** |
| *** Link Optimization *** |
| ***************************************************************************/ |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Get Link features into system data structure. |
| * |
| * @HtNbMethod{::F_GATHER_LINK_FEATURES} |
| * |
| * For a specific discovered CPU Link, populate the port list with the frequency |
| * capabilities. Support for other link oriented capabilities, currently: |
| * - Unit ID Clumping. Set to disabled. This doesn't mean the CPU doesn't support clumping, |
| * it just means: |
| * - The CPU doesn't clump its host unit ids, and |
| * - We don't have to check as carefully in SetLinkData whether the port is an IO host link. |
| * |
| * @param[in,out] ThisPort The PortList structure entry for this link's port |
| * @param[in] Interface Access to non-HT support functions. |
| * @param[in] PlatformConfig Platform profile/build option config structure. |
| * @param[in] Nb this northbridge |
| */ |
| VOID |
| GatherLinkFeatures ( |
| IN OUT PORT_DESCRIPTOR *ThisPort, |
| IN HT_INTERFACE *Interface, |
| IN PLATFORM_CONFIGURATION *PlatformConfig, |
| IN NORTHBRIDGE *Nb |
| ) |
| { |
| PCI_ADDR Reg; |
| UINT32 Frequency; |
| UINT32 ExtendedFrequency; |
| |
| Reg = ThisPort->Pointer; |
| Reg.Address.Register += HTHOST_FREQ_REV_REG; |
| LibAmdPciReadBits (Reg, 30, 16, &Frequency, Nb->ConfigHandle); |
| Reg = ThisPort->Pointer; |
| Reg.Address.Register += HTHOST_FREQ_EXTENSION; |
| LibAmdPciReadBits (Reg, 15, 1, &ExtendedFrequency, Nb->ConfigHandle); |
| ThisPort->PrvFrequencyCap = ((Frequency | (ExtendedFrequency << HT_FREQUENCY_2800M)) & |
| Nb->NorthBridgeFreqMask (ThisPort->NodeID, Interface, PlatformConfig, Nb)); |
| // Check for Internal link restriction not to run at 1000 MHz (but allow lower) |
| if (IsPackageLinkInternal (Nb->GetPackageLink (ThisPort->NodeID, ThisPort->Link, Nb))) { |
| ThisPort->PrvFrequencyCap &= ~(HT_FREQUENCY_LIMIT_1000M & ~HT_FREQUENCY_LIMIT_800M); |
| } |
| ThisPort->ClumpingSupport = HT_CLUMPING_DISABLE; |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Change the hardware state for all Links according to the now optimized data in the |
| * port list data structure for link reganging. |
| * |
| * @HtNbMethod{::F_SET_LINK_REGANG} |
| * |
| * @param[in] Node the node on which to regang a link |
| * @param[in] Link the sublink 0 of the sublink pair to regang |
| * @param[in] Nb this northbridge |
| */ |
| VOID |
| SetLinkRegang ( |
| IN UINT8 Node, |
| IN UINT8 Link, |
| IN NORTHBRIDGE *Nb |
| ) |
| { |
| PCI_ADDR Reg; |
| UINT32 Temp; |
| |
| Temp = 1; |
| Reg.AddressValue = MAKE_SBDFO (MakePciSegmentFromNode (Node), |
| MakePciBusFromNode (Node), |
| MakePciDeviceFromNode (Node), |
| CPU_HTNB_FUNC_00, |
| REG_HT_LINK_EXT_CONTROL0_0X170 + (4 * Link)); |
| |
| LibAmdPciWriteBits (Reg, 0, 0, &Temp, Nb->ConfigHandle); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Change the hardware state for all Links according to the now optimized data in the |
| * port list data structure for Unit Id Clumping. |
| * |
| * @HtNbMethod{::F_SET_LINK_UNITID_CLUMPING} |
| * |
| * This applies to the host root of a non-coherent chain. |
| * |
| * @param[in] Node the node on which to enable clumping |
| * @param[in] Link the link for which to enable clumping |
| * @param[in] ClumpingEnables the unit id clumping enables |
| * @param[in] Nb this northbridge |
| */ |
| VOID |
| SetLinkUnitIdClumping ( |
| IN UINT8 Node, |
| IN UINT8 Link, |
| IN UINT32 ClumpingEnables, |
| IN NORTHBRIDGE *Nb |
| ) |
| { |
| PCI_ADDR Reg; |
| |
| // Host Unit Ids are not clumped. |
| ASSERT ((ClumpingEnables & 0x3) == 0); |
| |
| Reg.AddressValue = MAKE_SBDFO (MakePciSegmentFromNode (Node), |
| MakePciBusFromNode (Node), |
| MakePciDeviceFromNode (Node), |
| CPU_HTNB_FUNC_00, |
| REG_HT_LINK_CLUMPING0_0X110 + (4 * Link)); |
| |
| LibAmdPciWriteBits (Reg, 31, 0, &ClumpingEnables, Nb->ConfigHandle); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Change the hardware state for all Links according to the now optimized data in the |
| * port list data structure for link frequency. |
| * |
| * @HtNbMethod{::F_SET_LINK_FREQUENCY} |
| * |
| * Handle extended frequencies. For HT3 frequencies, ensure Retry and Scrambling are |
| * set. For HT1, clear them. |
| * |
| * @param[in] Node the node on which to set frequency for a link |
| * @param[in] Link the link to set frequency |
| * @param[in] Frequency the frequency to set |
| * @param[in] Nb this northbridge |
| */ |
| VOID |
| SetLinkFrequency ( |
| IN UINT8 Node, |
| IN UINT8 Link, |
| IN UINT8 Frequency, |
| IN NORTHBRIDGE *Nb |
| ) |
| { |
| UINT32 Temp; |
| PCI_ADDR Reg; |
| |
| ASSERT ((Frequency >= HT_FREQUENCY_600M && Frequency <= HT_FREQUENCY_3200M) |
| || (Frequency == HT_FREQUENCY_200M) || (Frequency == HT_FREQUENCY_400M)); |
| |
| // Handle extended frequencies, 2800 MHz and above. 31 > Frequency > 16 in this case. |
| if (Frequency > HT_FREQUENCY_2600M) { |
| Temp = 1; |
| } else { |
| // Clear it if not extended. |
| Temp = 0; |
| } |
| Reg = Nb->MakeLinkBase (Node, Link, Nb); |
| Reg.Address.Register += HTHOST_FREQ_EXTENSION; |
| LibAmdPciWriteBits (Reg, 0, 0, &Temp, Nb->ConfigHandle); |
| Reg = Nb->MakeLinkBase (Node, Link, Nb); |
| Reg.Address.Register += HTHOST_FREQ_REV_REG; |
| Temp = (Frequency & 0x0F); |
| LibAmdPciWriteBits (Reg, 11, 8, &Temp, Nb->ConfigHandle); |
| // Gen1 = 200Mhz -> 1000MHz, Gen3 = 1200MHz -> 2600MHz |
| if (Frequency > HT_FREQUENCY_1000M) { |
| // Enable for Gen3 frequencies |
| Temp = 1; |
| } else { |
| // Disable for Gen1 frequencies |
| Temp = 0; |
| } |
| // HT3 retry mode enable / disable |
| Reg.AddressValue = MAKE_SBDFO (MakePciSegmentFromNode (Node), |
| MakePciBusFromNode (Node), |
| MakePciDeviceFromNode (Node), |
| CPU_HTNB_FUNC_00, |
| REG_HT_LINK_RETRY0_0X130 + (4 * Link)); |
| LibAmdPciWriteBits (Reg, 0, 0, &Temp, Nb->ConfigHandle); |
| // and Scrambling enable / disable |
| Reg.AddressValue = MAKE_SBDFO (MakePciSegmentFromNode (Node), |
| MakePciBusFromNode (Node), |
| MakePciDeviceFromNode (Node), |
| CPU_HTNB_FUNC_00, |
| REG_HT_LINK_EXT_CONTROL0_0X170 + (4 * Link)); |
| LibAmdPciWriteBits (Reg, 3, 3, &Temp, Nb->ConfigHandle); |
| } |
