/** @file
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PCH Gbe Library.
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All function in this library is available for PEI, DXE, and SMM,
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But do not support UEFI RUNTIME environment call.
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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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#include <Base.h>
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#include <Uefi/UefiBaseType.h>
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#include <Library/IoLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseLib.h>
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#include <Library/MmPciLib.h>
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#include <PchAccess.h>
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#include <Library/PchInfoLib.h>
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#include <Library/PchPcrLib.h>
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#include <Library/PchCycleDecodingLib.h>
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/**
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Check whether GbE region is valid
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Check SPI region directly since GbE might be disabled in SW.
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@retval TRUE Gbe Region is valid
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@retval FALSE Gbe Region is invalid
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**/
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BOOLEAN
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PchIsGbeRegionValid (
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VOID
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)
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{
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UINT32 SpiBar;
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SpiBar = MmioRead32 (MmPciBase (
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DEFAULT_PCI_BUS_NUMBER_PCH,
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PCI_DEVICE_NUMBER_PCH_SPI,
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PCI_FUNCTION_NUMBER_PCH_SPI)
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+ R_PCH_SPI_BAR0) & ~B_PCH_SPI_BAR0_MASK;
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ASSERT (SpiBar != 0);
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if (MmioRead32 (SpiBar + R_PCH_SPI_FREG3_GBE) != B_PCH_SPI_FREGX_BASE_MASK) {
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return TRUE;
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}
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return FALSE;
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}
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/**
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Returns GbE over PCIe port number based on a soft strap.
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@return Root port number (1-based)
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@retval 0 GbE over PCIe disabled
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**/
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UINT32
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PchGetGbePortNumber (
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VOID
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)
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{
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UINT32 GbePortSel;
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UINT32 PcieStrapFuse;
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PchPcrRead32 (PID_FIA, R_PCH_PCR_FIA_STRPFUSECFG1_REG_BASE, &PcieStrapFuse);
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if ((PcieStrapFuse & B_PCH_PCR_FIA_STRPFUSECFG1_GBE_PCIE_PEN) == 0) {
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return 0; // GbE disabled
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}
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GbePortSel = (PcieStrapFuse & B_PCH_PCR_FIA_STRPFUSECFG1_GBE_PCIEPORTSEL) >> N_PCH_PCR_FIA_STRPFUSECFG1_GBE_PCIEPORTSEL;
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if (GetPchSeries () == PchLp) {
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switch (GbePortSel) {
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case 0: return 3;
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case 1: return 4;
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case 2: return 5;
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case 3: return 9;
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case 4: return 10;
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}
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} else {
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switch (GbePortSel) {
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case 0: return 4;
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case 1: return 5;
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case 2: return 9;
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case 3: return 12;
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case 4: return 13;
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}
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}
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DEBUG ((DEBUG_ERROR, "Invalid GbE port\n"));
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ASSERT (FALSE);
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return 0;
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}
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/**
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Check whether LAN controller is enabled in the platform.
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@retval TRUE GbE is enabled
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@retval FALSE GbE is disabled
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**/
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BOOLEAN
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PchIsGbePresent (
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VOID
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)
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{
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UINT32 PwrmBase;
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UINT32 FuseDis2State;
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//
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// Check PMC strap/fuse
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//
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PchPwrmBaseGet (&PwrmBase);
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FuseDis2State = MmioRead32 (PwrmBase + R_PCH_PWRM_FUSE_DIS_RD_2);
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if (FuseDis2State & B_PCH_PWRM_FUSE_DIS_RD_2_GBE_FUSE_SS_DIS) {
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return FALSE;
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}
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//
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// Check FIA strap/fuse
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//
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if (PchGetGbePortNumber () == 0) {
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return FALSE;
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}
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//
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// Check GbE NVM
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//
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if (PchIsGbeRegionValid () == FALSE) {
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return FALSE;
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}
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return TRUE;
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}
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/**
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Check whether LAN controller is enabled in the platform.
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@deprecated Use PchIsGbePresent instead.
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@retval TRUE GbE is enabled
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@retval FALSE GbE is disabled
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**/
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BOOLEAN
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PchIsGbeAvailable (
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VOID
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)
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{
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return PchIsGbePresent ();
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}
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