/** @file
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HSIO pcie policy
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _HSIO_PCIE_CONFIG_H_
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#define _HSIO_PCIE_CONFIG_H_
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#define HSIO_PCIE_PREMEM_CONFIG_REVISION 1
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extern EFI_GUID gHsioPciePreMemConfigGuid;
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#pragma pack (push,1)
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/**
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The PCH_HSIO_PCIE_LANE_CONFIG describes HSIO settings for PCIe lane
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**/
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typedef struct {
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//
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// HSIO Rx Eq
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// Refer to the EDS for recommended values.
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// Note that these setting are per-lane and not per-port
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//
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UINT32 HsioRxSetCtleEnable : 1; ///< <b>0: Disable</b>; 1: Enable PCH PCIe Gen 3 Set CTLE Value
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UINT32 HsioRxSetCtle : 6; ///< PCH PCIe Gen 3 Set CTLE Value
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UINT32 HsioTxGen1DownscaleAmpEnable : 1; ///< <b>0: Disable</b>; 1: Enable PCH PCIe Gen 1 TX Output Downscale Amplitude Adjustment value override
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UINT32 HsioTxGen1DownscaleAmp : 6; ///< PCH PCIe Gen 1 TX Output Downscale Amplitude Adjustment value
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UINT32 HsioTxGen2DownscaleAmpEnable : 1; ///< <b>0: Disable</b>; 1: Enable PCH PCIe Gen 2 TX Output Downscale Amplitude Adjustment value override
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UINT32 HsioTxGen2DownscaleAmp : 6; ///< PCH PCIe Gen 2 TX Output Downscale Amplitude Adjustment value
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UINT32 HsioTxGen3DownscaleAmpEnable : 1; ///< <b>0: Disable</b>; 1: Enable PCH PCIe Gen 3 TX Output Downscale Amplitude Adjustment value override
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UINT32 HsioTxGen3DownscaleAmp : 6; ///< PCH PCIe Gen 3 TX Output Downscale Amplitude Adjustment value
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UINT32 RsvdBits0 : 4; ///< Reserved Bits
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UINT32 HsioTxGen1DeEmphEnable : 1; ///< <b>0: Disable</b>; 1: Enable PCH PCIe Gen 1 TX Output De-Emphasis Adjustment Setting value override
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UINT32 HsioTxGen1DeEmph : 6; ///< PCH PCIe Gen 1 TX Output De-Emphasis Adjustment Setting
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UINT32 HsioTxGen2DeEmph3p5Enable : 1; ///< <b>0: Disable</b>; 1: Enable PCH PCIe Gen 2 TX Output -3.5dB Mode De-Emphasis Adjustment Setting value override
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UINT32 HsioTxGen2DeEmph3p5 : 6; ///< PCH PCIe Gen 2 TX Output -3.5dB Mode De-Emphasis Adjustment Setting
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UINT32 HsioTxGen2DeEmph6p0Enable : 1; ///< <b>0: Disable</b>; 1: Enable PCH PCIe Gen 2 TX Output -6.0dB Mode De-Emphasis Adjustment Setting value override
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UINT32 HsioTxGen2DeEmph6p0 : 6; ///< PCH PCIe Gen 2 TX Output -6.0dB Mode De-Emphasis Adjustment Setting
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UINT32 RsvdBits1 : 11; ///< Reserved Bits
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} PCH_HSIO_PCIE_LANE_CONFIG;
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/**
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The PCH_HSIO_PCIE_CONFIG block describes the configuration of the HSIO for PCIe lanes
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<b>Revision 1</b>:
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- Initial version.
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<b>Revision 2</b>:
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- Add PciePllSsc support.
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**/
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typedef struct {
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CONFIG_BLOCK_HEADER Header; ///< Config Block Header
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///
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/// These members describe the configuration of HSIO for PCIe lanes.
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///
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PCH_HSIO_PCIE_LANE_CONFIG Lane[PCH_MAX_PCIE_ROOT_PORTS];
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/**
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Specifies the Pcie Pll Spread Spectrum Percentage
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The value of this policy is in 1/10th percent units.
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Valid spread range is 0-20. A value of 0xFF is reserved for AUTO.
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A value of 0 is SSC of 0.0%. A value of 20 is SSC of 2.0%
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The default is <b>0xFF: AUTO - No BIOS override</b>.
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**/
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UINT8 PciePllSsc;
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UINT8 Reserved[3];
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} PCH_HSIO_PCIE_PREMEM_CONFIG;
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#pragma pack (pop)
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#endif // _HSIO_PCIE_LANE_CONFIG_H_
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