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Diffstat (limited to 'src/vendorcode/amd/agesa/Proc/GNB/Modules/GnbPcieAlibV1/PcieAlibHotplug.esl')
| -rw-r--r-- | src/vendorcode/amd/agesa/Proc/GNB/Modules/GnbPcieAlibV1/PcieAlibHotplug.esl | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/Proc/GNB/Modules/GnbPcieAlibV1/PcieAlibHotplug.esl b/src/vendorcode/amd/agesa/Proc/GNB/Modules/GnbPcieAlibV1/PcieAlibHotplug.esl new file mode 100644 index 0000000000..fead211aed --- /dev/null +++ b/src/vendorcode/amd/agesa/Proc/GNB/Modules/GnbPcieAlibV1/PcieAlibHotplug.esl @@ -0,0 +1,328 @@ +/** + * @file + * + * ALIB ASL library + * + * + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: GNB + * @e \$Revision: 31805 $ @e \$Date: 2010-05-21 17:58:16 -0700 (Fri, 21 May 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. + * + * *************************************************************************** + * + */ + + + /*----------------------------------------------------------------------------------------*/ + /** + * Set PCIe Bus Width + * + * Arg0 - Data Buffer + */ + Method (procPcieSetBusWidth, 1, Serialized) { + Store (Buffer (256) {}, Local7) + CreateWordField (Local7, 0x0, varReturnBufferLength) + CreateWordField (Local7, 0x2, varReturnBusWidth) + CreateByteField (Arg0, 0x2, varArgBusWidth) + //@todo deternime correct lane bitmap (check for reversal) gate/ungate unused lanes + Store (3, varReturnBufferLength) + Store (varArgBusWidth, varReturnBusWidth) + return (Local7) + } + + + /*----------------------------------------------------------------------------------------*/ + /** + * PCIe port hotplug + * + * Arg0 - Data Buffer + * Local7 - Return buffer + */ + Method (procPciePortHotplug, 1, Serialized) { + Store ("PciePortHotplug Enter", Debug) + Store (Buffer (256) {}, Local7) + CreateWordField (Local7, 0x0, varReturnBufferLength) + CreateByteField (Local7, 0x2, varReturnStatus) + CreateByteField (Local7, 0x3, varReturnDeviceStatus) + CreateWordField (Arg0, 0x2, varPortBdf) + CreateByteField (Arg0, 0x4, varHotplugState) + Subtract (ShiftRight (varPortBdf, 3), 2, Local1); + if (LEqual(varHotplugState, 1)) { + // Enable port + Store (procPciePortEnable (Local1), varHotplugState); + } else { + // Disable port + Store (procPciePortDisable (Local1), varHotplugState); + } + Store (0x4, varReturnBufferLength) + Store (0x0, varReturnStatus) + Store (varHotplugState, varReturnDeviceStatus) + Store ("PciePortHotplug Exit", Debug) + return (Local7) + } + + + /*----------------------------------------------------------------------------------------*/ + /** + * Enable PCIe port + * + * 1) Ungate lanes + * 2) Enable Lanes + * 3) Train port + * 4) Disable unused lanes + * 5) Gate unused lanes + * + * Arg0 - Port Index + * + */ + Method (procPciePortEnable, 1, NotSerialized) { + Store ("PciePortEnable Enter", Debug) + Name (varLinkIsLinkReversed, 0) + Store (procPcieGetPortInfo (Arg0), Local7) + CreateByteField (Local7, DEF_OFFSET_LINK_HOTPLUG, varHotplugType) + if (LNotEqual (varHotplugType, DEF_BASIC_HOTPLUG)) { + Store (" No action.[Hotplug type]", Debug) + Store ("PciePortEnable Exit", Debug) + return (1) + } + // Poweron phy lanes + CreateByteField (Local7, DEF_OFFSET_START_PHY_LANE, varStartPhyLane) + CreateByteField (Local7, DEF_OFFSET_END_PHY_LANE, varEndPhyLane) + procPcieLanePowerControl (varStartPhyLane, varEndPhyLane, 0) + // Enable lanes + CreateByteField (Local7, DEF_OFFSET_START_CORE_LANE, varStartCoreLane) + CreateByteField (Local7, DEF_OFFSET_END_CORE_LANE, varEndCoreLane) + procPcieLaneEnableControl (Arg0, varStartPhyLane, varEndPhyLane, 0) + //Release training + procPcieTrainingControl (Arg0, 0) + //Train link + Store (procPcieCheckDevicePrecence (Arg0), Local1) + if (LEqual (Local1, 1)) { + Store (" Device detected", Debug) + Store (procPcieIsPortReversed (Arg0), varLinkIsLinkReversed) + Subtract (procPcieGetLinkWidth (Arg0, 1), procPcieGetLinkWidth (Arg0, 0), Local2) + if (LNotEqual (Local2, 0)) { + //There is unused lanes after device plugged + if (LNotEqual(varLinkIsLinkReversed, 0)) { + Add (varStartCoreLane, Local2, Local3) + Store (varEndCoreLane, Local4) + } else { + Subtract (varEndCoreLane, Local2, Local4) + Store (varStartCoreLane, Local3) + } + procPcieLaneEnableControl (Arg0, Local3, Local4, 1) + if (LGreater (varStartPhyLane, varEndPhyLane)) { + Store (varEndPhyLane, Local3) + Store (varStartPhyLane, Local4) + } else { + Store (varEndPhyLane, Local4) + Store (varStartPhyLane, Local3) + } + if (LNotEqual(varLinkIsLinkReversed, 0)) { + Add (Local3, Local2, Local3) + } else { + Subtract (Local4, Local2, Local4) + } + procPcieLanePowerControl (Local3, Local4, 1) + } + Store ("PciePortEnable Exit", Debug) + return (1) + } + Store (" Device detection fail", Debug) + procPciePortDisable (Arg0) + Store ("PciePortEnable Exit", Debug) + return (0) + } + + /*----------------------------------------------------------------------------------------*/ + /** + * Disable PCIe port + * + * 1) Hold training + * 2) Disable lanes + * 3) Gate lanes + * + * Arg0 - Port Index + * + */ + Method (procPciePortDisable, 1, NotSerialized) { + Store ("PciePortDisable Enter", Debug) + Store (procPcieGetPortInfo (Arg0), Local7) + CreateByteField (Local7, DEF_OFFSET_LINK_HOTPLUG, varHotplugType) + if (LNotEqual (varHotplugType, DEF_BASIC_HOTPLUG)) { + Store (" No action. [Hotplug type]", Debug) + Store ("PciePortDisable Exit", Debug) + return (0) + } + //Hold training + procPcieTrainingControl (Arg0, 1) + CreateByteField (Local7, DEF_OFFSET_START_CORE_LANE, varStartCoreLane) + CreateByteField (Local7, DEF_OFFSET_END_CORE_LANE, varEndCoreLane) + // Disable lane + procPcieLaneEnableControl (Arg0, varStartCoreLane, varEndCoreLane, 1) + CreateByteField (Local7, DEF_OFFSET_START_PHY_LANE, varStartPhyLane) + CreateByteField (Local7, DEF_OFFSET_END_PHY_LANE, varEndPhyLane) + // Poweroff phy lanes + procPcieLanePowerControl (varStartPhyLane, varEndPhyLane, 1) + + Store ("PciePortDisable Exit", Debug) + return (0) + } + /*----------------------------------------------------------------------------------------*/ + /** + * Is port reversed + * + * Arg0 - Port Index + * Retval - 0 - Not reversed / 1 - Reversed + */ + Method (procPcieIsPortReversed , 1, NotSerialized) { + Store (procPcieGetPortInfo (Arg0), Local7) + CreateByteField (Local7, DEF_OFFSET_START_PHY_LANE, varStartPhyLane) + CreateByteField (Local7, DEF_OFFSET_END_PHY_LANE, varEndPhyLane) + Store (0, Local0) + if (LGreater (varStartPhyLane, varEndPhyLane)) { + Store (1, Local0) + } + And (procPciePortIndirectRegisterRead (Arg0, 0x50), 0x1, Local1) + return (Xor (Local0, Local1)) + } + + /*----------------------------------------------------------------------------------------*/ + /** + * Training Control + * + * Arg0 - Port Index + * Arg1 - Hold Training (1) / Release Training (0) + */ + Method (procPcieTrainingControl , 2, NotSerialized) { + Store ("PcieTrainingControl Enter", Debug) + Store (procPcieGetPortInfo (Arg0), Local7) + CreateByteField (Local7, DEF_OFFSET_PORT_ID, varPortId) + CreateWordField (Local7, DEF_OFFSET_WRAPPER_ID, varWrapperId) + procIndirectRegisterRMW (0x0, 0xE0, Or (ShiftLeft (varWrapperId, 16), Add (0x800, Multiply (0x100, varPortId))), Not (0x1), Arg1); + Store ("PcieTrainingControl Exit", Debug) + } + + + /*----------------------------------------------------------------------------------------*/ + /** + * Check device presence + * + * Arg0 - Port Index + * Retval - 1 - Device present, 0 - Device not present + */ + Method (procPcieCheckDevicePrecence, 1, NotSerialized) { + Store ("PcieCheckDevicePrecence Enter", Debug) + Store (0, Local0) + Store (0, Local7) + while (LLess (Local0, 320)) { // @todo for debug only should be 80 + And (procPciePortIndirectRegisterRead (Arg0, 0xa5), 0x3f, Local1) + if (LEqual (Local1, 0x10)) { + Store (1, Local7) + Store (320, Local0) + Break + } + Stall (250) + Increment (Local0) + } + //Store (Concatenate ("Device Presence Status :", ToHexString (Local7)), Debug) + Store ("PcieCheckDevicePrecence Exit", Debug) + return (Local7) + } + + /*----------------------------------------------------------------------------------------*/ + /** + * Get actual negotiated/PHY or core link width + * + * Arg0 - Port Index + * Arg1 - 0/1 Negotiated/Phy + * Retval - Link Width + */ + Method (procPcieGetLinkWidth, 2, NotSerialized) { + if (LEqual (Arg0, 0)){ + //Get negotiated length + And (ShiftRight (procPciePortIndirectRegisterRead (Arg0, 0xA2), 4), 0x7, Local0) + Store (DeRefOf (Index (Buffer (){0, 1, 2, 4, 8, 12, 16}, Local0)), Local1) + } else { + //Get phy length + Store (procPcieGetPortInfo (Arg0), Local7) + CreateByteField (Local7, DEF_OFFSET_START_PHY_LANE, varStartPhyLane) + CreateByteField (Local7, DEF_OFFSET_END_PHY_LANE, varEndPhyLane) + if (LGreater (varStartPhyLane, varEndPhyLane)) { + Subtract (varStartPhyLane, varEndPhyLane, Local1) + } else { + Subtract (varEndPhyLane, varStartPhyLane, Local1) + } + Increment (Local1) + } + //Store (Concatenate ("Link Width :", ToHexString (Local7)), Debug) + return (Local1) + } + + /*----------------------------------------------------------------------------------------*/ + /** + * PCIe lane mux lane enable control (hotplug support) + * + * Arg0 - Port Index + * Arg1 - Start Lane + * Arg2 - End Lane + * Arg3 - Enable(0) / Disable(1) + */ + Method (procPcieLaneEnableControl, 4, NotSerialized) { + Store ("PcieLaneEnableControl Enter", Debug) + Name (varStartCoreLane, 0) + Name (varEndCoreLane, 0) + Store (procPcieGetPortInfo (Arg0), Local7) + Store (Arg1, varStartCoreLane) + Store (Arg2, varEndCoreLane) + CreateWordField (Local7, DEF_OFFSET_WRAPPER_ID, varWrapperId) + if (LGreater (varStartCoreLane, varEndCoreLane)) { + Subtract (varStartCoreLane, varEndCoreLane, Local1) + Store (varEndCoreLane, Local2) + } else { + Subtract (varEndCoreLane, varStartCoreLane, Local1) + Store (varStartCoreLane, Local2) + } + ShiftLeft (Subtract (ShiftLeft (1, Add (Local1, 1)), 1), Local2, Local1) + //Store (Concatenate ("Lane Bitmap :", ToHexString (Local1)), Debug) + if (Lequal (Arg3, 0)) { + procIndirectRegisterRMW (0x0, 0xE0, Or (ShiftLeft (varWrapperId, 16), 0x8023), 0xffffffff, Local1); + } else { + procIndirectRegisterRMW (0x0, 0xE0, Or (ShiftLeft (varWrapperId, 16), 0x8023), Not (Local1), 0x0); + } + Stall (10) + Store ("PcieLaneEnableControl Exit", Debug) + } + + |