mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-10 14:23:31 +01:00
1631 lines
49 KiB
C
1631 lines
49 KiB
C
/** @file
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Internal library implementation for PCI Bus module.
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Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "PciBus.h"
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GLOBAL_REMOVE_IF_UNREFERENCED
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CHAR16 *mBarTypeStr[] = {
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L"Unknow",
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L" Io16",
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L" Io32",
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L" Mem32",
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L"PMem32",
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L" Mem64",
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L"PMem64",
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L" Io",
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L" Mem",
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L"Unknow"
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};
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/**
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Retrieve the PCI Card device BAR information via PciIo interface.
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@param PciIoDevice PCI Card device instance.
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**/
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VOID
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GetBackPcCardBar (
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IN PCI_IO_DEVICE *PciIoDevice
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)
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{
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UINT32 Address;
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if (!FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
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return;
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}
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//
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// Read PciBar information from the bar register
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//
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if (!gFullEnumeration) {
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Address = 0;
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PciIoDevice->PciIo.Pci.Read (
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&(PciIoDevice->PciIo),
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EfiPciIoWidthUint32,
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PCI_CARD_MEMORY_BASE_0,
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1,
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&Address
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);
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(PciIoDevice->PciBar)[P2C_MEM_1].BaseAddress = (UINT64) (Address);
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(PciIoDevice->PciBar)[P2C_MEM_1].Length = 0x2000000;
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(PciIoDevice->PciBar)[P2C_MEM_1].BarType = PciBarTypeMem32;
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Address = 0;
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PciIoDevice->PciIo.Pci.Read (
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&(PciIoDevice->PciIo),
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EfiPciIoWidthUint32,
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PCI_CARD_MEMORY_BASE_1,
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1,
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&Address
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);
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(PciIoDevice->PciBar)[P2C_MEM_2].BaseAddress = (UINT64) (Address);
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(PciIoDevice->PciBar)[P2C_MEM_2].Length = 0x2000000;
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(PciIoDevice->PciBar)[P2C_MEM_2].BarType = PciBarTypePMem32;
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Address = 0;
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PciIoDevice->PciIo.Pci.Read (
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&(PciIoDevice->PciIo),
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EfiPciIoWidthUint32,
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PCI_CARD_IO_BASE_0_LOWER,
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1,
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&Address
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);
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(PciIoDevice->PciBar)[P2C_IO_1].BaseAddress = (UINT64) (Address);
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(PciIoDevice->PciBar)[P2C_IO_1].Length = 0x100;
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(PciIoDevice->PciBar)[P2C_IO_1].BarType = PciBarTypeIo16;
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Address = 0;
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PciIoDevice->PciIo.Pci.Read (
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&(PciIoDevice->PciIo),
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EfiPciIoWidthUint32,
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PCI_CARD_IO_BASE_1_LOWER,
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1,
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&Address
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);
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(PciIoDevice->PciBar)[P2C_IO_2].BaseAddress = (UINT64) (Address);
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(PciIoDevice->PciBar)[P2C_IO_2].Length = 0x100;
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(PciIoDevice->PciBar)[P2C_IO_2].BarType = PciBarTypeIo16;
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}
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if (gPciHotPlugInit != NULL && FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
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GetResourcePaddingForHpb (PciIoDevice);
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}
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}
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/**
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Remove rejected pci device from specific root bridge
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handle.
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@param RootBridgeHandle Specific parent root bridge handle.
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@param Bridge Bridge device instance.
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**/
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VOID
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RemoveRejectedPciDevices (
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IN EFI_HANDLE RootBridgeHandle,
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IN PCI_IO_DEVICE *Bridge
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)
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{
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PCI_IO_DEVICE *Temp;
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LIST_ENTRY *CurrentLink;
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LIST_ENTRY *LastLink;
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if (!FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
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return;
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}
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CurrentLink = Bridge->ChildList.ForwardLink;
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while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {
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Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
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if (IS_PCI_BRIDGE (&Temp->Pci)) {
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//
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// Remove rejected devices recusively
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//
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RemoveRejectedPciDevices (RootBridgeHandle, Temp);
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} else {
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//
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// Skip rejection for all PPBs, while detect rejection for others
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//
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if (IsPciDeviceRejected (Temp)) {
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//
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// For P2C, remove all devices on it
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//
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if (!IsListEmpty (&Temp->ChildList)) {
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RemoveAllPciDeviceOnBridge (RootBridgeHandle, Temp);
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}
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//
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// Finally remove itself
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//
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LastLink = CurrentLink->BackLink;
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RemoveEntryList (CurrentLink);
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FreePciDevice (Temp);
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CurrentLink = LastLink;
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}
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}
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CurrentLink = CurrentLink->ForwardLink;
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}
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}
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/**
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Dump the resourc map of the bridge device.
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@param[in] BridgeResource Resource descriptor of the bridge device.
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**/
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VOID
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DumpBridgeResource (
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IN PCI_RESOURCE_NODE *BridgeResource
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)
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{
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LIST_ENTRY *Link;
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PCI_RESOURCE_NODE *Resource;
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PCI_BAR *Bar;
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if ((BridgeResource != NULL) && (BridgeResource->Length != 0)) {
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DEBUG ((
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EFI_D_INFO, "Type = %s; Base = 0x%x;\tLength = 0x%x;\tAlignment = 0x%x\n",
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mBarTypeStr[MIN (BridgeResource->ResType, PciBarTypeMaxType)],
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BridgeResource->PciDev->PciBar[BridgeResource->Bar].BaseAddress,
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BridgeResource->Length, BridgeResource->Alignment
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));
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for ( Link = BridgeResource->ChildList.ForwardLink
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; Link != &BridgeResource->ChildList
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; Link = Link->ForwardLink
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) {
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Resource = RESOURCE_NODE_FROM_LINK (Link);
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if (Resource->ResourceUsage == PciResUsageTypical) {
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Bar = Resource->Virtual ? Resource->PciDev->VfPciBar : Resource->PciDev->PciBar;
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DEBUG ((
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EFI_D_INFO, " Base = 0x%x;\tLength = 0x%x;\tAlignment = 0x%x;\tOwner = %s ",
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Bar[Resource->Bar].BaseAddress, Resource->Length, Resource->Alignment,
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IS_PCI_BRIDGE (&Resource->PciDev->Pci) ? L"PPB" :
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IS_CARDBUS_BRIDGE (&Resource->PciDev->Pci) ? L"P2C" :
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L"PCI"
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));
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if ((!IS_PCI_BRIDGE (&Resource->PciDev->Pci) && !IS_CARDBUS_BRIDGE (&Resource->PciDev->Pci)) ||
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(IS_PCI_BRIDGE (&Resource->PciDev->Pci) && (Resource->Bar < PPB_IO_RANGE)) ||
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(IS_CARDBUS_BRIDGE (&Resource->PciDev->Pci) && (Resource->Bar < P2C_MEM_1))
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) {
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//
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// The resource requirement comes from the device itself.
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//
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DEBUG ((
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EFI_D_INFO, " [%02x|%02x|%02x:%02x]\n",
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Resource->PciDev->BusNumber, Resource->PciDev->DeviceNumber,
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Resource->PciDev->FunctionNumber, Bar[Resource->Bar].Offset
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));
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} else {
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//
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// The resource requirement comes from the subordinate devices.
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//
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DEBUG ((
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EFI_D_INFO, " [%02x|%02x|%02x:**]\n",
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Resource->PciDev->BusNumber, Resource->PciDev->DeviceNumber,
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Resource->PciDev->FunctionNumber
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));
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}
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} else {
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DEBUG ((EFI_D_INFO, " Padding:Length = 0x%x;\tAlignment = 0x%x\n", Resource->Length, Resource->Alignment));
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}
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}
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}
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}
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/**
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Find the corresponding resource node for the Device in child list of BridgeResource.
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@param[in] Device Pointer to PCI_IO_DEVICE.
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@param[in] BridgeResource Pointer to PCI_RESOURCE_NODE.
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@return !NULL The corresponding resource node for the Device.
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@return NULL No corresponding resource node for the Device.
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**/
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PCI_RESOURCE_NODE *
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FindResourceNode (
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IN PCI_IO_DEVICE *Device,
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IN PCI_RESOURCE_NODE *BridgeResource
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)
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{
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LIST_ENTRY *Link;
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PCI_RESOURCE_NODE *Resource;
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for ( Link = BridgeResource->ChildList.ForwardLink
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; Link != &BridgeResource->ChildList
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; Link = Link->ForwardLink
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) {
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Resource = RESOURCE_NODE_FROM_LINK (Link);
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if (Resource->PciDev == Device) {
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return Resource;
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}
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}
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return NULL;
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}
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/**
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Dump the resource map of all the devices under Bridge.
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@param[in] Bridge Bridge device instance.
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@param[in] IoNode IO resource descriptor for the bridge device.
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@param[in] Mem32Node Mem32 resource descriptor for the bridge device.
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@param[in] PMem32Node PMem32 resource descriptor for the bridge device.
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@param[in] Mem64Node Mem64 resource descriptor for the bridge device.
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@param[in] PMem64Node PMem64 resource descriptor for the bridge device.
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**/
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VOID
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DumpResourceMap (
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IN PCI_IO_DEVICE *Bridge,
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IN PCI_RESOURCE_NODE *IoNode,
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IN PCI_RESOURCE_NODE *Mem32Node,
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IN PCI_RESOURCE_NODE *PMem32Node,
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IN PCI_RESOURCE_NODE *Mem64Node,
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IN PCI_RESOURCE_NODE *PMem64Node
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)
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{
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EFI_STATUS Status;
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LIST_ENTRY *Link;
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PCI_IO_DEVICE *Device;
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PCI_RESOURCE_NODE *ChildIoNode;
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PCI_RESOURCE_NODE *ChildMem32Node;
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PCI_RESOURCE_NODE *ChildPMem32Node;
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PCI_RESOURCE_NODE *ChildMem64Node;
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PCI_RESOURCE_NODE *ChildPMem64Node;
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EFI_DEVICE_PATH_TO_TEXT_PROTOCOL *ToText;
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CHAR16 *Str;
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DEBUG ((EFI_D_INFO, "PciBus: Resource Map for "));
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Status = gBS->OpenProtocol (
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Bridge->Handle,
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&gEfiPciRootBridgeIoProtocolGuid,
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NULL,
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NULL,
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NULL,
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EFI_OPEN_PROTOCOL_TEST_PROTOCOL
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);
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if (EFI_ERROR (Status)) {
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DEBUG ((
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EFI_D_INFO, "Bridge [%02x|%02x|%02x]\n",
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Bridge->BusNumber, Bridge->DeviceNumber, Bridge->FunctionNumber
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));
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} else {
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Status = gBS->LocateProtocol (
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&gEfiDevicePathToTextProtocolGuid,
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NULL,
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(VOID **) &ToText
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);
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Str = NULL;
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if (!EFI_ERROR (Status)) {
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Str = ToText->ConvertDevicePathToText (
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DevicePathFromHandle (Bridge->Handle),
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FALSE,
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FALSE
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);
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}
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DEBUG ((EFI_D_INFO, "Root Bridge %s\n", Str != NULL ? Str : L""));
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if (Str != NULL) {
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FreePool (Str);
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}
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}
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DumpBridgeResource (IoNode);
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DumpBridgeResource (Mem32Node);
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DumpBridgeResource (PMem32Node);
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DumpBridgeResource (Mem64Node);
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DumpBridgeResource (PMem64Node);
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DEBUG ((EFI_D_INFO, "\n"));
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for ( Link = Bridge->ChildList.ForwardLink
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; Link != &Bridge->ChildList
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; Link = Link->ForwardLink
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) {
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Device = PCI_IO_DEVICE_FROM_LINK (Link);
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if (IS_PCI_BRIDGE (&Device->Pci)) {
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ChildIoNode = (IoNode == NULL ? NULL : FindResourceNode (Device, IoNode));
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ChildMem32Node = (Mem32Node == NULL ? NULL : FindResourceNode (Device, Mem32Node));
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ChildPMem32Node = (PMem32Node == NULL ? NULL : FindResourceNode (Device, PMem32Node));
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ChildMem64Node = (Mem64Node == NULL ? NULL : FindResourceNode (Device, Mem64Node));
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ChildPMem64Node = (PMem64Node == NULL ? NULL : FindResourceNode (Device, PMem64Node));
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DumpResourceMap (
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Device,
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ChildIoNode,
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ChildMem32Node,
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ChildPMem32Node,
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ChildMem64Node,
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ChildPMem64Node
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);
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}
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}
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}
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/**
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Submits the I/O and memory resource requirements for the specified PCI Host Bridge.
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@param PciResAlloc Point to protocol instance of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
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@retval EFI_SUCCESS Successfully finished resource allocation.
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@retval EFI_NOT_FOUND Cannot get root bridge instance.
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@retval EFI_OUT_OF_RESOURCES Platform failed to program the resources if no hot plug supported.
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@retval other Some error occurred when allocating resources for the PCI Host Bridge.
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@note Feature flag PcdPciBusHotplugDeviceSupport determine whether need support hotplug.
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**/
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EFI_STATUS
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PciHostBridgeResourceAllocator (
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
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)
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{
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PCI_IO_DEVICE *RootBridgeDev;
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EFI_HANDLE RootBridgeHandle;
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VOID *AcpiConfig;
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EFI_STATUS Status;
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UINT64 IoBase;
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UINT64 Mem32Base;
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UINT64 PMem32Base;
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UINT64 Mem64Base;
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UINT64 PMem64Base;
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UINT64 IoResStatus;
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UINT64 Mem32ResStatus;
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UINT64 PMem32ResStatus;
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UINT64 Mem64ResStatus;
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UINT64 PMem64ResStatus;
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UINT64 MaxOptionRomSize;
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PCI_RESOURCE_NODE *IoBridge;
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PCI_RESOURCE_NODE *Mem32Bridge;
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PCI_RESOURCE_NODE *PMem32Bridge;
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PCI_RESOURCE_NODE *Mem64Bridge;
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PCI_RESOURCE_NODE *PMem64Bridge;
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PCI_RESOURCE_NODE IoPool;
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PCI_RESOURCE_NODE Mem32Pool;
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PCI_RESOURCE_NODE PMem32Pool;
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PCI_RESOURCE_NODE Mem64Pool;
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PCI_RESOURCE_NODE PMem64Pool;
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BOOLEAN ReAllocate;
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EFI_DEVICE_HANDLE_EXTENDED_DATA_PAYLOAD HandleExtendedData;
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EFI_RESOURCE_ALLOC_FAILURE_ERROR_DATA_PAYLOAD AllocFailExtendedData;
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|
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//
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// Reallocate flag
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//
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ReAllocate = FALSE;
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//
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// It may try several times if the resource allocation fails
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//
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while (TRUE) {
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//
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// Initialize resource pool
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//
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InitializeResourcePool (&IoPool, PciBarTypeIo16);
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InitializeResourcePool (&Mem32Pool, PciBarTypeMem32);
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InitializeResourcePool (&PMem32Pool, PciBarTypePMem32);
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InitializeResourcePool (&Mem64Pool, PciBarTypeMem64);
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InitializeResourcePool (&PMem64Pool, PciBarTypePMem64);
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RootBridgeDev = NULL;
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RootBridgeHandle = 0;
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|
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while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
|
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//
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// Get Root Bridge Device by handle
|
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//
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RootBridgeDev = GetRootBridgeByHandle (RootBridgeHandle);
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|
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if (RootBridgeDev == NULL) {
|
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return EFI_NOT_FOUND;
|
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}
|
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|
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//
|
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// Create the entire system resource map from the information collected by
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// enumerator. Several resource tree was created
|
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//
|
|
|
|
//
|
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// If non-stardard PCI Bridge I/O window alignment is supported,
|
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// set I/O aligment to minimum possible alignment for root bridge.
|
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//
|
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IoBridge = CreateResourceNode (
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RootBridgeDev,
|
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0,
|
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FeaturePcdGet (PcdPciBridgeIoAlignmentProbe) ? 0x1FF: 0xFFF,
|
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RB_IO_RANGE,
|
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PciBarTypeIo16,
|
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PciResUsageTypical
|
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);
|
|
|
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Mem32Bridge = CreateResourceNode (
|
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RootBridgeDev,
|
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0,
|
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0xFFFFF,
|
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RB_MEM32_RANGE,
|
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PciBarTypeMem32,
|
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PciResUsageTypical
|
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);
|
|
|
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PMem32Bridge = CreateResourceNode (
|
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RootBridgeDev,
|
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0,
|
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0xFFFFF,
|
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RB_PMEM32_RANGE,
|
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PciBarTypePMem32,
|
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PciResUsageTypical
|
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);
|
|
|
|
Mem64Bridge = CreateResourceNode (
|
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RootBridgeDev,
|
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0,
|
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0xFFFFF,
|
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RB_MEM64_RANGE,
|
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PciBarTypeMem64,
|
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PciResUsageTypical
|
|
);
|
|
|
|
PMem64Bridge = CreateResourceNode (
|
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RootBridgeDev,
|
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0,
|
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0xFFFFF,
|
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RB_PMEM64_RANGE,
|
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PciBarTypePMem64,
|
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PciResUsageTypical
|
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);
|
|
|
|
//
|
|
// Create resourcemap by going through all the devices subject to this root bridge
|
|
//
|
|
CreateResourceMap (
|
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RootBridgeDev,
|
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IoBridge,
|
|
Mem32Bridge,
|
|
PMem32Bridge,
|
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Mem64Bridge,
|
|
PMem64Bridge
|
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);
|
|
|
|
//
|
|
// Get the max ROM size that the root bridge can process
|
|
//
|
|
RootBridgeDev->RomSize = Mem32Bridge->Length;
|
|
|
|
//
|
|
// Skip to enlarge the resource request during realloction
|
|
//
|
|
if (!ReAllocate) {
|
|
//
|
|
// Get Max Option Rom size for current root bridge
|
|
//
|
|
MaxOptionRomSize = GetMaxOptionRomSize (RootBridgeDev);
|
|
|
|
//
|
|
// Enlarger the mem32 resource to accomdate the option rom
|
|
// if the mem32 resource is not enough to hold the rom
|
|
//
|
|
if (MaxOptionRomSize > Mem32Bridge->Length) {
|
|
|
|
Mem32Bridge->Length = MaxOptionRomSize;
|
|
RootBridgeDev->RomSize = MaxOptionRomSize;
|
|
|
|
//
|
|
// Alignment should be adjusted as well
|
|
//
|
|
if (Mem32Bridge->Alignment < MaxOptionRomSize - 1) {
|
|
Mem32Bridge->Alignment = MaxOptionRomSize - 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Based on the all the resource tree, contruct ACPI resource node to
|
|
// submit the resource aperture to pci host bridge protocol
|
|
//
|
|
Status = ConstructAcpiResourceRequestor (
|
|
RootBridgeDev,
|
|
IoBridge,
|
|
Mem32Bridge,
|
|
PMem32Bridge,
|
|
Mem64Bridge,
|
|
PMem64Bridge,
|
|
&AcpiConfig
|
|
);
|
|
|
|
//
|
|
// Insert these resource nodes into the database
|
|
//
|
|
InsertResourceNode (&IoPool, IoBridge);
|
|
InsertResourceNode (&Mem32Pool, Mem32Bridge);
|
|
InsertResourceNode (&PMem32Pool, PMem32Bridge);
|
|
InsertResourceNode (&Mem64Pool, Mem64Bridge);
|
|
InsertResourceNode (&PMem64Pool, PMem64Bridge);
|
|
|
|
if (Status == EFI_SUCCESS) {
|
|
//
|
|
// Submit the resource requirement
|
|
//
|
|
Status = PciResAlloc->SubmitResources (
|
|
PciResAlloc,
|
|
RootBridgeDev->Handle,
|
|
AcpiConfig
|
|
);
|
|
}
|
|
|
|
//
|
|
// Free acpi resource node
|
|
//
|
|
if (AcpiConfig != NULL) {
|
|
FreePool (AcpiConfig);
|
|
}
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
//
|
|
// Destroy all the resource tree
|
|
//
|
|
DestroyResourceTree (&IoPool);
|
|
DestroyResourceTree (&Mem32Pool);
|
|
DestroyResourceTree (&PMem32Pool);
|
|
DestroyResourceTree (&Mem64Pool);
|
|
DestroyResourceTree (&PMem64Pool);
|
|
return Status;
|
|
}
|
|
}
|
|
//
|
|
// End while, at least one Root Bridge should be found.
|
|
//
|
|
ASSERT (RootBridgeDev != NULL);
|
|
|
|
//
|
|
// Notify platform to start to program the resource
|
|
//
|
|
Status = NotifyPhase (PciResAlloc, EfiPciHostBridgeAllocateResources);
|
|
if (!FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
|
|
//
|
|
// If Hot Plug is not supported
|
|
//
|
|
if (EFI_ERROR (Status)) {
|
|
//
|
|
// Allocation failed, then return
|
|
//
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
//
|
|
// Allocation succeed.
|
|
// Get host bridge handle for status report, and then skip the main while
|
|
//
|
|
HandleExtendedData.Handle = RootBridgeDev->PciRootBridgeIo->ParentHandle;
|
|
|
|
break;
|
|
|
|
} else {
|
|
//
|
|
// If Hot Plug is supported
|
|
//
|
|
if (!EFI_ERROR (Status)) {
|
|
//
|
|
// Allocation succeed, then continue the following
|
|
//
|
|
break;
|
|
}
|
|
|
|
//
|
|
// If the resource allocation is unsuccessful, free resources on bridge
|
|
//
|
|
|
|
RootBridgeDev = NULL;
|
|
RootBridgeHandle = 0;
|
|
|
|
IoResStatus = EFI_RESOURCE_SATISFIED;
|
|
Mem32ResStatus = EFI_RESOURCE_SATISFIED;
|
|
PMem32ResStatus = EFI_RESOURCE_SATISFIED;
|
|
Mem64ResStatus = EFI_RESOURCE_SATISFIED;
|
|
PMem64ResStatus = EFI_RESOURCE_SATISFIED;
|
|
|
|
while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
|
|
//
|
|
// Get RootBridg Device by handle
|
|
//
|
|
RootBridgeDev = GetRootBridgeByHandle (RootBridgeHandle);
|
|
if (RootBridgeDev == NULL) {
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
//
|
|
// Get host bridge handle for status report
|
|
//
|
|
HandleExtendedData.Handle = RootBridgeDev->PciRootBridgeIo->ParentHandle;
|
|
|
|
//
|
|
// Get acpi resource node for all the resource types
|
|
//
|
|
AcpiConfig = NULL;
|
|
|
|
Status = PciResAlloc->GetProposedResources (
|
|
PciResAlloc,
|
|
RootBridgeDev->Handle,
|
|
&AcpiConfig
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
if (AcpiConfig != NULL) {
|
|
//
|
|
// Adjust resource allocation policy for each RB
|
|
//
|
|
GetResourceAllocationStatus (
|
|
AcpiConfig,
|
|
&IoResStatus,
|
|
&Mem32ResStatus,
|
|
&PMem32ResStatus,
|
|
&Mem64ResStatus,
|
|
&PMem64ResStatus
|
|
);
|
|
FreePool (AcpiConfig);
|
|
}
|
|
}
|
|
//
|
|
// End while
|
|
//
|
|
|
|
//
|
|
// Raise the EFI_IOB_EC_RESOURCE_CONFLICT status code
|
|
//
|
|
//
|
|
// It is very difficult to follow the spec here
|
|
// Device path , Bar index can not be get here
|
|
//
|
|
ZeroMem (&AllocFailExtendedData, sizeof (AllocFailExtendedData));
|
|
|
|
REPORT_STATUS_CODE_WITH_EXTENDED_DATA (
|
|
EFI_PROGRESS_CODE,
|
|
EFI_IO_BUS_PCI | EFI_IOB_EC_RESOURCE_CONFLICT,
|
|
(VOID *) &AllocFailExtendedData,
|
|
sizeof (AllocFailExtendedData)
|
|
);
|
|
|
|
Status = PciHostBridgeAdjustAllocation (
|
|
&IoPool,
|
|
&Mem32Pool,
|
|
&PMem32Pool,
|
|
&Mem64Pool,
|
|
&PMem64Pool,
|
|
IoResStatus,
|
|
Mem32ResStatus,
|
|
PMem32ResStatus,
|
|
Mem64ResStatus,
|
|
PMem64ResStatus
|
|
);
|
|
|
|
//
|
|
// Destroy all the resource tree
|
|
//
|
|
DestroyResourceTree (&IoPool);
|
|
DestroyResourceTree (&Mem32Pool);
|
|
DestroyResourceTree (&PMem32Pool);
|
|
DestroyResourceTree (&Mem64Pool);
|
|
DestroyResourceTree (&PMem64Pool);
|
|
|
|
NotifyPhase (PciResAlloc, EfiPciHostBridgeFreeResources);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
ReAllocate = TRUE;
|
|
}
|
|
}
|
|
//
|
|
// End main while
|
|
//
|
|
|
|
//
|
|
// Raise the EFI_IOB_PCI_RES_ALLOC status code
|
|
//
|
|
REPORT_STATUS_CODE_WITH_EXTENDED_DATA (
|
|
EFI_PROGRESS_CODE,
|
|
EFI_IO_BUS_PCI | EFI_IOB_PCI_RES_ALLOC,
|
|
(VOID *) &HandleExtendedData,
|
|
sizeof (HandleExtendedData)
|
|
);
|
|
|
|
//
|
|
// Notify pci bus driver starts to program the resource
|
|
//
|
|
NotifyPhase (PciResAlloc, EfiPciHostBridgeSetResources);
|
|
|
|
RootBridgeDev = NULL;
|
|
|
|
RootBridgeHandle = 0;
|
|
|
|
while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
|
|
//
|
|
// Get RootBridg Device by handle
|
|
//
|
|
RootBridgeDev = GetRootBridgeByHandle (RootBridgeHandle);
|
|
|
|
if (RootBridgeDev == NULL) {
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
//
|
|
// Get acpi resource node for all the resource types
|
|
//
|
|
AcpiConfig = NULL;
|
|
Status = PciResAlloc->GetProposedResources (
|
|
PciResAlloc,
|
|
RootBridgeDev->Handle,
|
|
&AcpiConfig
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Get the resource base by interpreting acpi resource node
|
|
//
|
|
//
|
|
GetResourceBase (
|
|
AcpiConfig,
|
|
&IoBase,
|
|
&Mem32Base,
|
|
&PMem32Base,
|
|
&Mem64Base,
|
|
&PMem64Base
|
|
);
|
|
|
|
//
|
|
// Process option rom for this root bridge
|
|
//
|
|
ProcessOptionRom (RootBridgeDev, Mem32Base, RootBridgeDev->RomSize);
|
|
|
|
//
|
|
// Create the entire system resource map from the information collected by
|
|
// enumerator. Several resource tree was created
|
|
//
|
|
IoBridge = FindResourceNode (RootBridgeDev, &IoPool);
|
|
Mem32Bridge = FindResourceNode (RootBridgeDev, &Mem32Pool);
|
|
PMem32Bridge = FindResourceNode (RootBridgeDev, &PMem32Pool);
|
|
Mem64Bridge = FindResourceNode (RootBridgeDev, &Mem64Pool);
|
|
PMem64Bridge = FindResourceNode (RootBridgeDev, &PMem64Pool);
|
|
|
|
ASSERT (IoBridge != NULL);
|
|
ASSERT (Mem32Bridge != NULL);
|
|
ASSERT (PMem32Bridge != NULL);
|
|
ASSERT (Mem64Bridge != NULL);
|
|
ASSERT (PMem64Bridge != NULL);
|
|
|
|
//
|
|
// Program IO resources
|
|
//
|
|
ProgramResource (
|
|
IoBase,
|
|
IoBridge
|
|
);
|
|
|
|
//
|
|
// Program Mem32 resources
|
|
//
|
|
ProgramResource (
|
|
Mem32Base,
|
|
Mem32Bridge
|
|
);
|
|
|
|
//
|
|
// Program PMem32 resources
|
|
//
|
|
ProgramResource (
|
|
PMem32Base,
|
|
PMem32Bridge
|
|
);
|
|
|
|
//
|
|
// Program Mem64 resources
|
|
//
|
|
ProgramResource (
|
|
Mem64Base,
|
|
Mem64Bridge
|
|
);
|
|
|
|
//
|
|
// Program PMem64 resources
|
|
//
|
|
ProgramResource (
|
|
PMem64Base,
|
|
PMem64Bridge
|
|
);
|
|
|
|
IoBridge ->PciDev->PciBar[IoBridge ->Bar].BaseAddress = IoBase;
|
|
Mem32Bridge ->PciDev->PciBar[Mem32Bridge ->Bar].BaseAddress = Mem32Base;
|
|
PMem32Bridge->PciDev->PciBar[PMem32Bridge->Bar].BaseAddress = PMem32Base;
|
|
Mem64Bridge ->PciDev->PciBar[Mem64Bridge ->Bar].BaseAddress = Mem64Base;
|
|
PMem64Bridge->PciDev->PciBar[PMem64Bridge->Bar].BaseAddress = PMem64Base;
|
|
|
|
//
|
|
// Dump the resource map for current root bridge
|
|
//
|
|
DEBUG_CODE (
|
|
DumpResourceMap (
|
|
RootBridgeDev,
|
|
IoBridge,
|
|
Mem32Bridge,
|
|
PMem32Bridge,
|
|
Mem64Bridge,
|
|
PMem64Bridge
|
|
);
|
|
);
|
|
|
|
FreePool (AcpiConfig);
|
|
}
|
|
|
|
//
|
|
// Destroy all the resource tree
|
|
//
|
|
DestroyResourceTree (&IoPool);
|
|
DestroyResourceTree (&Mem32Pool);
|
|
DestroyResourceTree (&PMem32Pool);
|
|
DestroyResourceTree (&Mem64Pool);
|
|
DestroyResourceTree (&PMem64Pool);
|
|
|
|
//
|
|
// Notify the resource allocation phase is to end
|
|
//
|
|
NotifyPhase (PciResAlloc, EfiPciHostBridgeEndResourceAllocation);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Allocate NumberOfBuses buses and return the next available PCI bus number.
|
|
|
|
@param Bridge Bridge device instance.
|
|
@param StartBusNumber Current available PCI bus number.
|
|
@param NumberOfBuses Number of buses enumerated below the StartBusNumber.
|
|
@param NextBusNumber Next available PCI bus number.
|
|
|
|
@retval EFI_SUCCESS Available bus number resource is enough. Next available PCI bus number
|
|
is returned in NextBusNumber.
|
|
@retval EFI_OUT_OF_RESOURCES Available bus number resource is not enough for allocation.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
PciAllocateBusNumber (
|
|
IN PCI_IO_DEVICE *Bridge,
|
|
IN UINT8 StartBusNumber,
|
|
IN UINT8 NumberOfBuses,
|
|
OUT UINT8 *NextBusNumber
|
|
)
|
|
{
|
|
PCI_IO_DEVICE *RootBridge;
|
|
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *BusNumberRanges;
|
|
UINT8 NextNumber;
|
|
UINT64 MaxNumberInRange;
|
|
|
|
//
|
|
// Get PCI Root Bridge device
|
|
//
|
|
RootBridge = Bridge;
|
|
while (RootBridge->Parent != NULL) {
|
|
RootBridge = RootBridge->Parent;
|
|
}
|
|
|
|
//
|
|
// Get next available PCI bus number
|
|
//
|
|
BusNumberRanges = RootBridge->BusNumberRanges;
|
|
while (BusNumberRanges->Desc != ACPI_END_TAG_DESCRIPTOR) {
|
|
MaxNumberInRange = BusNumberRanges->AddrRangeMin + BusNumberRanges->AddrLen - 1;
|
|
if (StartBusNumber >= BusNumberRanges->AddrRangeMin && StartBusNumber <= MaxNumberInRange) {
|
|
NextNumber = (UINT8)(StartBusNumber + NumberOfBuses);
|
|
while (NextNumber > MaxNumberInRange) {
|
|
++BusNumberRanges;
|
|
if (BusNumberRanges->Desc == ACPI_END_TAG_DESCRIPTOR) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
NextNumber = (UINT8)(NextNumber + (BusNumberRanges->AddrRangeMin - (MaxNumberInRange + 1)));
|
|
MaxNumberInRange = BusNumberRanges->AddrRangeMin + BusNumberRanges->AddrLen - 1;
|
|
}
|
|
*NextBusNumber = NextNumber;
|
|
return EFI_SUCCESS;
|
|
}
|
|
BusNumberRanges++;
|
|
}
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
/**
|
|
Scan pci bus and assign bus number to the given PCI bus system.
|
|
|
|
@param Bridge Bridge device instance.
|
|
@param StartBusNumber start point.
|
|
@param SubBusNumber Point to sub bus number.
|
|
@param PaddedBusRange Customized bus number.
|
|
|
|
@retval EFI_SUCCESS Successfully scanned and assigned bus number.
|
|
@retval other Some error occurred when scanning pci bus.
|
|
|
|
@note Feature flag PcdPciBusHotplugDeviceSupport determine whether need support hotplug.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
PciScanBus (
|
|
IN PCI_IO_DEVICE *Bridge,
|
|
IN UINT8 StartBusNumber,
|
|
OUT UINT8 *SubBusNumber,
|
|
OUT UINT8 *PaddedBusRange
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
PCI_TYPE00 Pci;
|
|
UINT8 Device;
|
|
UINT8 Func;
|
|
UINT64 Address;
|
|
UINTN SecondBus;
|
|
UINT16 Register;
|
|
UINTN HpIndex;
|
|
PCI_IO_DEVICE *PciDevice;
|
|
EFI_EVENT Event;
|
|
EFI_HPC_STATE State;
|
|
UINT64 PciAddress;
|
|
EFI_HPC_PADDING_ATTRIBUTES Attributes;
|
|
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptors;
|
|
UINT16 BusRange;
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
|
|
BOOLEAN BusPadding;
|
|
UINT32 TempReservedBusNum;
|
|
|
|
PciRootBridgeIo = Bridge->PciRootBridgeIo;
|
|
SecondBus = 0;
|
|
Register = 0;
|
|
State = 0;
|
|
Attributes = (EFI_HPC_PADDING_ATTRIBUTES) 0;
|
|
BusRange = 0;
|
|
BusPadding = FALSE;
|
|
PciDevice = NULL;
|
|
PciAddress = 0;
|
|
|
|
for (Device = 0; Device <= PCI_MAX_DEVICE; Device++) {
|
|
TempReservedBusNum = 0;
|
|
for (Func = 0; Func <= PCI_MAX_FUNC; Func++) {
|
|
|
|
//
|
|
// Check to see whether a pci device is present
|
|
//
|
|
Status = PciDevicePresent (
|
|
PciRootBridgeIo,
|
|
&Pci,
|
|
StartBusNumber,
|
|
Device,
|
|
Func
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// Get the PCI device information
|
|
//
|
|
Status = PciSearchDevice (
|
|
Bridge,
|
|
&Pci,
|
|
StartBusNumber,
|
|
Device,
|
|
Func,
|
|
&PciDevice
|
|
);
|
|
|
|
ASSERT (!EFI_ERROR (Status));
|
|
|
|
PciAddress = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, 0);
|
|
|
|
if (!IS_PCI_BRIDGE (&Pci)) {
|
|
//
|
|
// PCI bridges will be called later
|
|
// Here just need for PCI device or PCI to cardbus controller
|
|
// EfiPciBeforeChildBusEnumeration for PCI Device Node
|
|
//
|
|
PreprocessController (
|
|
PciDevice,
|
|
PciDevice->BusNumber,
|
|
PciDevice->DeviceNumber,
|
|
PciDevice->FunctionNumber,
|
|
EfiPciBeforeChildBusEnumeration
|
|
);
|
|
}
|
|
|
|
if (FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
|
|
//
|
|
// For Pci Hotplug controller devcie only
|
|
//
|
|
if (gPciHotPlugInit != NULL) {
|
|
//
|
|
// Check if it is a Hotplug PCI controller
|
|
//
|
|
if (IsRootPciHotPlugController (PciDevice->DevicePath, &HpIndex)) {
|
|
gPciRootHpcData[HpIndex].Found = TRUE;
|
|
|
|
if (!gPciRootHpcData[HpIndex].Initialized) {
|
|
|
|
Status = CreateEventForHpc (HpIndex, &Event);
|
|
|
|
ASSERT (!EFI_ERROR (Status));
|
|
|
|
Status = gPciHotPlugInit->InitializeRootHpc (
|
|
gPciHotPlugInit,
|
|
gPciRootHpcPool[HpIndex].HpcDevicePath,
|
|
PciAddress,
|
|
Event,
|
|
&State
|
|
);
|
|
|
|
PreprocessController (
|
|
PciDevice,
|
|
PciDevice->BusNumber,
|
|
PciDevice->DeviceNumber,
|
|
PciDevice->FunctionNumber,
|
|
EfiPciBeforeChildBusEnumeration
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (IS_PCI_BRIDGE (&Pci) || IS_CARDBUS_BRIDGE (&Pci)) {
|
|
//
|
|
// For PPB
|
|
//
|
|
if (!FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
|
|
//
|
|
// If Hot Plug is not supported,
|
|
// get the bridge information
|
|
//
|
|
Status = PciSearchDevice (
|
|
Bridge,
|
|
&Pci,
|
|
StartBusNumber,
|
|
Device,
|
|
Func,
|
|
&PciDevice
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
} else {
|
|
//
|
|
// If Hot Plug is supported,
|
|
// Get the bridge information
|
|
//
|
|
BusPadding = FALSE;
|
|
if (gPciHotPlugInit != NULL) {
|
|
|
|
if (IsRootPciHotPlugBus (PciDevice->DevicePath, &HpIndex)) {
|
|
|
|
//
|
|
// If it is initialized, get the padded bus range
|
|
//
|
|
Status = gPciHotPlugInit->GetResourcePadding (
|
|
gPciHotPlugInit,
|
|
gPciRootHpcPool[HpIndex].HpbDevicePath,
|
|
PciAddress,
|
|
&State,
|
|
(VOID **) &Descriptors,
|
|
&Attributes
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
BusRange = 0;
|
|
Status = PciGetBusRange (
|
|
&Descriptors,
|
|
NULL,
|
|
NULL,
|
|
&BusRange
|
|
);
|
|
|
|
FreePool (Descriptors);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
BusPadding = TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
Status = PciAllocateBusNumber (Bridge, *SubBusNumber, 1, SubBusNumber);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
SecondBus = *SubBusNumber;
|
|
|
|
Register = (UINT16) ((SecondBus << 8) | (UINT16) StartBusNumber);
|
|
Address = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, PCI_BRIDGE_PRIMARY_BUS_REGISTER_OFFSET);
|
|
|
|
Status = PciRootBridgeIo->Pci.Write (
|
|
PciRootBridgeIo,
|
|
EfiPciWidthUint16,
|
|
Address,
|
|
1,
|
|
&Register
|
|
);
|
|
|
|
|
|
//
|
|
// If it is PPB, resursively search down this bridge
|
|
//
|
|
if (IS_PCI_BRIDGE (&Pci)) {
|
|
|
|
//
|
|
// Temporarily initialize SubBusNumber to maximum bus number to ensure the
|
|
// PCI configuration transaction to go through any PPB
|
|
//
|
|
Register = 0xFF;
|
|
Address = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, PCI_BRIDGE_SUBORDINATE_BUS_REGISTER_OFFSET);
|
|
Status = PciRootBridgeIo->Pci.Write (
|
|
PciRootBridgeIo,
|
|
EfiPciWidthUint8,
|
|
Address,
|
|
1,
|
|
&Register
|
|
);
|
|
|
|
//
|
|
// Nofify EfiPciBeforeChildBusEnumeration for PCI Brige
|
|
//
|
|
PreprocessController (
|
|
PciDevice,
|
|
PciDevice->BusNumber,
|
|
PciDevice->DeviceNumber,
|
|
PciDevice->FunctionNumber,
|
|
EfiPciBeforeChildBusEnumeration
|
|
);
|
|
|
|
Status = PciScanBus (
|
|
PciDevice,
|
|
(UINT8) (SecondBus),
|
|
SubBusNumber,
|
|
PaddedBusRange
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
if (FeaturePcdGet (PcdPciBusHotplugDeviceSupport) && BusPadding) {
|
|
//
|
|
// Ensure the device is enabled and initialized
|
|
//
|
|
if ((Attributes == EfiPaddingPciRootBridge) &&
|
|
(State & EFI_HPC_STATE_ENABLED) != 0 &&
|
|
(State & EFI_HPC_STATE_INITIALIZED) != 0) {
|
|
*PaddedBusRange = (UINT8) ((UINT8) (BusRange) +*PaddedBusRange);
|
|
} else {
|
|
Status = PciAllocateBusNumber (PciDevice, *SubBusNumber, (UINT8) (BusRange), SubBusNumber);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Set the current maximum bus number under the PPB
|
|
//
|
|
Address = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, PCI_BRIDGE_SUBORDINATE_BUS_REGISTER_OFFSET);
|
|
|
|
Status = PciRootBridgeIo->Pci.Write (
|
|
PciRootBridgeIo,
|
|
EfiPciWidthUint8,
|
|
Address,
|
|
1,
|
|
SubBusNumber
|
|
);
|
|
} else {
|
|
//
|
|
// It is device. Check PCI IOV for Bus reservation
|
|
// Go through each function, just reserve the MAX ReservedBusNum for one device
|
|
//
|
|
if (PcdGetBool (PcdSrIovSupport) && PciDevice->SrIovCapabilityOffset != 0) {
|
|
if (TempReservedBusNum < PciDevice->ReservedBusNum) {
|
|
|
|
Status = PciAllocateBusNumber (PciDevice, *SubBusNumber, (UINT8) (PciDevice->ReservedBusNum - TempReservedBusNum), SubBusNumber);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
TempReservedBusNum = PciDevice->ReservedBusNum;
|
|
|
|
if (Func == 0) {
|
|
DEBUG ((EFI_D_INFO, "PCI-IOV ScanBus - SubBusNumber - 0x%x\n", *SubBusNumber));
|
|
} else {
|
|
DEBUG ((EFI_D_INFO, "PCI-IOV ScanBus - SubBusNumber - 0x%x (Update)\n", *SubBusNumber));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Func == 0 && !IS_PCI_MULTI_FUNC (&Pci)) {
|
|
|
|
//
|
|
// Skip sub functions, this is not a multi function device
|
|
//
|
|
|
|
Func = PCI_MAX_FUNC;
|
|
}
|
|
}
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Process Option Rom on the specified root bridge.
|
|
|
|
@param Bridge Pci root bridge device instance.
|
|
|
|
@retval EFI_SUCCESS Success process.
|
|
@retval other Some error occurred when processing Option Rom on the root bridge.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
PciRootBridgeP2CProcess (
|
|
IN PCI_IO_DEVICE *Bridge
|
|
)
|
|
{
|
|
LIST_ENTRY *CurrentLink;
|
|
PCI_IO_DEVICE *Temp;
|
|
EFI_HPC_STATE State;
|
|
UINT64 PciAddress;
|
|
EFI_STATUS Status;
|
|
|
|
CurrentLink = Bridge->ChildList.ForwardLink;
|
|
|
|
while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {
|
|
|
|
Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
|
|
|
|
if (IS_CARDBUS_BRIDGE (&Temp->Pci)) {
|
|
|
|
if (gPciHotPlugInit != NULL && Temp->Allocated && FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
|
|
|
|
//
|
|
// Raise the EFI_IOB_PCI_HPC_INIT status code
|
|
//
|
|
REPORT_STATUS_CODE_WITH_DEVICE_PATH (
|
|
EFI_PROGRESS_CODE,
|
|
EFI_IO_BUS_PCI | EFI_IOB_PCI_HPC_INIT,
|
|
Temp->DevicePath
|
|
);
|
|
|
|
PciAddress = EFI_PCI_ADDRESS (Temp->BusNumber, Temp->DeviceNumber, Temp->FunctionNumber, 0);
|
|
Status = gPciHotPlugInit->InitializeRootHpc (
|
|
gPciHotPlugInit,
|
|
Temp->DevicePath,
|
|
PciAddress,
|
|
NULL,
|
|
&State
|
|
);
|
|
|
|
if (!EFI_ERROR (Status)) {
|
|
Status = PciBridgeEnumerator (Temp);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
CurrentLink = CurrentLink->ForwardLink;
|
|
continue;
|
|
|
|
}
|
|
}
|
|
|
|
if (!IsListEmpty (&Temp->ChildList)) {
|
|
Status = PciRootBridgeP2CProcess (Temp);
|
|
}
|
|
|
|
CurrentLink = CurrentLink->ForwardLink;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Process Option Rom on the specified host bridge.
|
|
|
|
@param PciResAlloc Pointer to instance of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
|
|
|
|
@retval EFI_SUCCESS Success process.
|
|
@retval EFI_NOT_FOUND Can not find the root bridge instance.
|
|
@retval other Some error occurred when processing Option Rom on the host bridge.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
PciHostBridgeP2CProcess (
|
|
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
|
|
)
|
|
{
|
|
EFI_HANDLE RootBridgeHandle;
|
|
PCI_IO_DEVICE *RootBridgeDev;
|
|
EFI_STATUS Status;
|
|
|
|
if (!FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
RootBridgeHandle = NULL;
|
|
|
|
while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
|
|
|
|
//
|
|
// Get RootBridg Device by handle
|
|
//
|
|
RootBridgeDev = GetRootBridgeByHandle (RootBridgeHandle);
|
|
|
|
if (RootBridgeDev == NULL) {
|
|
return EFI_NOT_FOUND;
|
|
}
|
|
|
|
Status = PciRootBridgeP2CProcess (RootBridgeDev);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
This function is used to enumerate the entire host bridge
|
|
in a given platform.
|
|
|
|
@param PciResAlloc A pointer to the PCI Host Resource Allocation protocol.
|
|
|
|
@retval EFI_SUCCESS Successfully enumerated the host bridge.
|
|
@retval EFI_OUT_OF_RESOURCES No enough memory available.
|
|
@retval other Some error occurred when enumerating the host bridge.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
PciHostBridgeEnumerator (
|
|
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
|
|
)
|
|
{
|
|
EFI_HANDLE RootBridgeHandle;
|
|
PCI_IO_DEVICE *RootBridgeDev;
|
|
EFI_STATUS Status;
|
|
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
|
|
UINT16 MinBus;
|
|
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptors;
|
|
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Configuration;
|
|
UINT8 StartBusNumber;
|
|
LIST_ENTRY RootBridgeList;
|
|
LIST_ENTRY *Link;
|
|
|
|
if (FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
|
|
InitializeHotPlugSupport ();
|
|
}
|
|
|
|
InitializeListHead (&RootBridgeList);
|
|
|
|
//
|
|
// Notify the bus allocation phase is about to start
|
|
//
|
|
NotifyPhase (PciResAlloc, EfiPciHostBridgeBeginBusAllocation);
|
|
|
|
DEBUG((EFI_D_INFO, "PCI Bus First Scanning\n"));
|
|
RootBridgeHandle = NULL;
|
|
while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
|
|
|
|
//
|
|
// if a root bridge instance is found, create root bridge device for it
|
|
//
|
|
|
|
RootBridgeDev = CreateRootBridge (RootBridgeHandle);
|
|
|
|
if (RootBridgeDev == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
//
|
|
// Enumerate all the buses under this root bridge
|
|
//
|
|
Status = PciRootBridgeEnumerator (
|
|
PciResAlloc,
|
|
RootBridgeDev
|
|
);
|
|
|
|
if (gPciHotPlugInit != NULL && FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
|
|
InsertTailList (&RootBridgeList, &(RootBridgeDev->Link));
|
|
} else {
|
|
DestroyRootBridge (RootBridgeDev);
|
|
}
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Notify the bus allocation phase is finished for the first time
|
|
//
|
|
NotifyPhase (PciResAlloc, EfiPciHostBridgeEndBusAllocation);
|
|
|
|
if (gPciHotPlugInit != NULL && FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
|
|
//
|
|
// Reset all assigned PCI bus number in all PPB
|
|
//
|
|
RootBridgeHandle = NULL;
|
|
Link = GetFirstNode (&RootBridgeList);
|
|
while ((PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) &&
|
|
(!IsNull (&RootBridgeList, Link))) {
|
|
RootBridgeDev = PCI_IO_DEVICE_FROM_LINK (Link);
|
|
//
|
|
// Get the Bus information
|
|
//
|
|
Status = PciResAlloc->StartBusEnumeration (
|
|
PciResAlloc,
|
|
RootBridgeHandle,
|
|
(VOID **) &Configuration
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Get the bus number to start with
|
|
//
|
|
StartBusNumber = (UINT8) (Configuration->AddrRangeMin);
|
|
|
|
ResetAllPpbBusNumber (
|
|
RootBridgeDev,
|
|
StartBusNumber
|
|
);
|
|
|
|
FreePool (Configuration);
|
|
Link = RemoveEntryList (Link);
|
|
DestroyRootBridge (RootBridgeDev);
|
|
}
|
|
|
|
//
|
|
// Wait for all HPC initialized
|
|
//
|
|
Status = AllRootHPCInitialized (STALL_1_SECOND * 15);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
DEBUG ((EFI_D_ERROR, "Some root HPC failed to initialize\n"));
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Notify the bus allocation phase is about to start for the 2nd time
|
|
//
|
|
NotifyPhase (PciResAlloc, EfiPciHostBridgeBeginBusAllocation);
|
|
|
|
DEBUG((EFI_D_INFO, "PCI Bus Second Scanning\n"));
|
|
RootBridgeHandle = NULL;
|
|
while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
|
|
|
|
//
|
|
// if a root bridge instance is found, create root bridge device for it
|
|
//
|
|
RootBridgeDev = CreateRootBridge (RootBridgeHandle);
|
|
|
|
if (RootBridgeDev == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
//
|
|
// Enumerate all the buses under this root bridge
|
|
//
|
|
Status = PciRootBridgeEnumerator (
|
|
PciResAlloc,
|
|
RootBridgeDev
|
|
);
|
|
|
|
DestroyRootBridge (RootBridgeDev);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Notify the bus allocation phase is to end for the 2nd time
|
|
//
|
|
NotifyPhase (PciResAlloc, EfiPciHostBridgeEndBusAllocation);
|
|
}
|
|
|
|
//
|
|
// Notify the resource allocation phase is to start
|
|
//
|
|
NotifyPhase (PciResAlloc, EfiPciHostBridgeBeginResourceAllocation);
|
|
|
|
RootBridgeHandle = NULL;
|
|
while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
|
|
|
|
//
|
|
// if a root bridge instance is found, create root bridge device for it
|
|
//
|
|
RootBridgeDev = CreateRootBridge (RootBridgeHandle);
|
|
|
|
if (RootBridgeDev == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
Status = StartManagingRootBridge (RootBridgeDev);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
PciRootBridgeIo = RootBridgeDev->PciRootBridgeIo;
|
|
Status = PciRootBridgeIo->Configuration (PciRootBridgeIo, (VOID **) &Descriptors);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
Status = PciGetBusRange (&Descriptors, &MinBus, NULL, NULL);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
//
|
|
// Determine root bridge attribute by calling interface of Pcihostbridge
|
|
// protocol
|
|
//
|
|
DetermineRootBridgeAttributes (
|
|
PciResAlloc,
|
|
RootBridgeDev
|
|
);
|
|
|
|
//
|
|
// Collect all the resource information under this root bridge
|
|
// A database that records all the information about pci device subject to this
|
|
// root bridge will then be created
|
|
//
|
|
Status = PciPciDeviceInfoCollector (
|
|
RootBridgeDev,
|
|
(UINT8) MinBus
|
|
);
|
|
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
InsertRootBridge (RootBridgeDev);
|
|
|
|
//
|
|
// Record the hostbridge handle
|
|
//
|
|
AddHostBridgeEnumerator (RootBridgeDev->PciRootBridgeIo->ParentHandle);
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|