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audk/SourceLevelDebugPkg/Library/DebugCommunicationLibUsb3/DebugCommunicationLibUsb3Dxe.c

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/** @file
Debug Port Library implementation based on usb3 debug port.
Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Base.h>
#include <PiDxe.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/HobLib.h>
#include <Protocol/PciIo.h>
#include <Protocol/IoMmu.h>
#include "DebugCommunicationLibUsb3Internal.h"
GUID gUsb3DbgGuid = USB3_DBG_GUID;
USB3_DEBUG_PORT_HANDLE *mUsb3Instance = NULL;
/**
Creates a named event that can be signaled.
This function creates an event using NotifyTpl, NoifyFunction.
If Name is NULL, then ASSERT().
If NotifyTpl is not a legal TPL value, then ASSERT().
If NotifyFunction is NULL, then ASSERT().
@param Name Supplies the GUID name of the event.
@param NotifyTpl Supplies the task priority level of the event notifications.
@param NotifyFunction Supplies the function to notify when the event is signaled.
@param Event A pointer to the event created.
@retval EFI_SUCCESS A named event was created.
@retval EFI_OUT_OF_RESOURCES There are not enough resource to create the named event.
**/
EFI_STATUS
EFIAPI
Usb3NamedEventListen (
IN CONST EFI_GUID *Name,
IN EFI_TPL NotifyTpl,
IN EFI_EVENT_NOTIFY NotifyFunction,
IN EFI_EVENT *Event
)
{
EFI_STATUS Status;
VOID *RegistrationLocal;
ASSERT (Name != NULL);
ASSERT (NotifyFunction != NULL);
ASSERT (NotifyTpl <= TPL_HIGH_LEVEL);
//
// Create event
//
Status = gBS->CreateEvent (
EVT_NOTIFY_SIGNAL,
NotifyTpl,
NotifyFunction,
NULL,
Event
);
ASSERT_EFI_ERROR (Status);
//
// Register for an installation of protocol interface
//
Status = gBS->RegisterProtocolNotify (
(EFI_GUID *) Name,
*Event,
&RegistrationLocal
);
ASSERT_EFI_ERROR (Status);
return Status;
}
/**
USB3 map one DMA buffer.
@param Instance Pointer to USB3 debug port instance.
@param PciIo Pointer to PciIo for USB3 debug port.
@param Address DMA buffer address to be mapped.
@param NumberOfBytes Number of bytes to be mapped.
@param BackupBuffer Backup buffer address.
**/
VOID
Usb3MapOneDmaBuffer (
IN USB3_DEBUG_PORT_HANDLE *Instance,
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN EFI_PHYSICAL_ADDRESS Address,
IN UINTN NumberOfBytes,
IN EFI_PHYSICAL_ADDRESS BackupBuffer
)
{
EFI_STATUS Status;
VOID *HostAddress;
EFI_PHYSICAL_ADDRESS DeviceAddress;
VOID *Mapping;
HostAddress = (VOID *) (UINTN) Address;
Status = PciIo->Map (
PciIo,
EfiPciIoOperationBusMasterCommonBuffer,
HostAddress,
&NumberOfBytes,
&DeviceAddress,
&Mapping
);
ASSERT_EFI_ERROR (Status);
ASSERT (DeviceAddress == ((EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress));
if (Instance->FromHob) {
//
// Reallocate the DMA buffer by AllocateAddress with
// the memory type accessible by SMM.
//
CopyMem ((VOID *) (UINTN) BackupBuffer, (VOID *) (UINTN) Address, NumberOfBytes);
Status = gBS->FreePages (Address, EFI_SIZE_TO_PAGES (NumberOfBytes));
ASSERT_EFI_ERROR (Status);
Status = gBS->AllocatePages (
AllocateAddress,
EfiACPIMemoryNVS,
EFI_SIZE_TO_PAGES (NumberOfBytes),
&Address
);
ASSERT_EFI_ERROR (Status);
CopyMem ((VOID *) (UINTN) Address, (VOID *) (UINTN) BackupBuffer, NumberOfBytes);
}
}
/**
USB3 map DMA buffers.
@param Instance Pointer to USB3 debug port instance.
@param PciIo Pointer to PciIo for USB3 debug port.
**/
VOID
Usb3MapDmaBuffers (
IN USB3_DEBUG_PORT_HANDLE *Instance,
IN EFI_PCI_IO_PROTOCOL *PciIo
)
{
EFI_STATUS Status;
EDKII_IOMMU_PROTOCOL *IoMmu;
EFI_PHYSICAL_ADDRESS BackupBuffer;
UINTN BackupBufferSize;
IoMmu = NULL;
Status = gBS->LocateProtocol (&gEdkiiIoMmuProtocolGuid, NULL, (VOID **) &IoMmu);
if (EFI_ERROR (Status) || (IoMmu == NULL)) {
//
// No need to map the DMA buffers.
//
return;
}
//
// Allocate backup buffer for the case that the USB3
// debug port instance and DMA buffers are from PEI HOB.
// For this case, the DMA buffers need to be reallocated
// by AllocateAddress with the memory type accessible by
// SMM.
//
BackupBufferSize = MAX (XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE * 2 + USB3_DEBUG_PORT_WRITE_MAX_PACKET_SIZE,
MAX (sizeof (TRB_TEMPLATE) * TR_RING_TRB_NUMBER,
MAX (sizeof (TRB_TEMPLATE) * EVENT_RING_TRB_NUMBER,
MAX (sizeof (EVENT_RING_SEG_TABLE_ENTRY) * ERST_NUMBER,
MAX (sizeof (XHC_DC_CONTEXT),
STRING0_DESC_LEN + MANU_DESC_LEN + PRODUCT_DESC_LEN + SERIAL_DESC_LEN)))));
Status = gBS->AllocatePages (
AllocateAnyPages,
EfiBootServicesData,
EFI_SIZE_TO_PAGES (BackupBufferSize),
&BackupBuffer
);
ASSERT_EFI_ERROR (Status);
Usb3MapOneDmaBuffer (
Instance,
PciIo,
Instance->UrbIn.Data,
XHCI_DEBUG_DEVICE_MAX_PACKET_SIZE * 2 + USB3_DEBUG_PORT_WRITE_MAX_PACKET_SIZE,
BackupBuffer
);
Usb3MapOneDmaBuffer (
Instance,
PciIo,
Instance->TransferRingIn.RingSeg0,
sizeof (TRB_TEMPLATE) * TR_RING_TRB_NUMBER,
BackupBuffer
);
Usb3MapOneDmaBuffer (
Instance,
PciIo,
Instance->TransferRingOut.RingSeg0,
sizeof (TRB_TEMPLATE) * TR_RING_TRB_NUMBER,
BackupBuffer
);
Usb3MapOneDmaBuffer (
Instance,
PciIo,
Instance->EventRing.EventRingSeg0,
sizeof (TRB_TEMPLATE) * EVENT_RING_TRB_NUMBER,
BackupBuffer
);
Usb3MapOneDmaBuffer (
Instance,
PciIo,
Instance->EventRing.ERSTBase,
sizeof (EVENT_RING_SEG_TABLE_ENTRY) * ERST_NUMBER,
BackupBuffer
);
Usb3MapOneDmaBuffer (
Instance,
PciIo,
Instance->DebugCapabilityContext,
sizeof (XHC_DC_CONTEXT),
BackupBuffer
);
Usb3MapOneDmaBuffer (
Instance,
PciIo,
((XHC_DC_CONTEXT *) (UINTN) Instance->DebugCapabilityContext)->DbcInfoContext.String0DescAddress,
STRING0_DESC_LEN + MANU_DESC_LEN + PRODUCT_DESC_LEN + SERIAL_DESC_LEN,
BackupBuffer
);
gBS->FreePages (BackupBuffer, EFI_SIZE_TO_PAGES (BackupBufferSize));
}
/**
Invoke a notification event
@param[in] Event Event whose notification function is being invoked.
@param[in] Context The pointer to the notification function's context,
which is implementation-dependent.
**/
VOID
EFIAPI
Usb3PciIoNotify (
IN EFI_EVENT Event,
IN VOID *Context
)
{
EFI_STATUS Status;
UINTN PciIoHandleCount;
EFI_HANDLE *PciIoHandleBuffer;
UINTN Index;
EFI_PCI_IO_PROTOCOL *PciIo;
UINTN PciSegment;
UINTN PciBusNumber;
UINTN PciDeviceNumber;
UINTN PciFunctionNumber;
UINT32 PciAddress;
ASSERT (mUsb3Instance != NULL);
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiPciIoProtocolGuid,
NULL,
&PciIoHandleCount,
&PciIoHandleBuffer
);
if (!EFI_ERROR (Status) &&
(PciIoHandleBuffer != NULL) &&
(PciIoHandleCount != 0)) {
for (Index = 0; Index < PciIoHandleCount; Index++) {
Status = gBS->HandleProtocol (
PciIoHandleBuffer[Index],
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo
);
ASSERT_EFI_ERROR (Status);
Status = PciIo->GetLocation (PciIo, &PciSegment, &PciBusNumber, &PciDeviceNumber, &PciFunctionNumber);
ASSERT_EFI_ERROR (Status);
PciAddress = (UINT32) ((PciBusNumber << 20) | (PciDeviceNumber << 15) | (PciFunctionNumber << 12));
if (PciAddress == PcdGet32(PcdUsbXhciPciAddress)) {
//
// Found the PciIo for USB3 debug port.
//
DEBUG ((DEBUG_INFO, "%a()\n", __FUNCTION__));
mUsb3Instance->InNotify = TRUE;
Usb3MapDmaBuffers (mUsb3Instance, PciIo);
mUsb3Instance->InNotify = FALSE;
gBS->CloseEvent ((EFI_EVENT) (UINTN) mUsb3Instance->PciIoEvent);
break;
}
}
gBS->FreePool (PciIoHandleBuffer);
}
}
/**
Return USB3 debug instance address.
**/
USB3_DEBUG_PORT_HANDLE *
GetUsb3DebugPortInstance (
VOID
)
{
USB3_DEBUG_PORT_HANDLE *Instance;
EFI_PEI_HOB_POINTERS Hob;
Instance = NULL;
if (mUsb3Instance != NULL) {
Instance = mUsb3Instance;
goto Done;
}
Hob.Raw = GetFirstGuidHob (&gUsb3DbgGuid);
if (Hob.Raw != NULL) {
Instance = GET_GUID_HOB_DATA (Hob.Guid);
}
Done:
if (Instance != NULL) {
DiscoverInitializeUsbDebugPort (Instance);
}
return Instance;
}
/**
Allocate aligned memory for XHC's usage.
@param BufferSize The size, in bytes, of the Buffer.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID*
AllocateAlignBuffer (
IN UINTN BufferSize
)
{
EFI_PHYSICAL_ADDRESS TmpAddr;
EFI_STATUS Status;
VOID *Buf;
Buf = NULL;
if (gBS != NULL) {
TmpAddr = 0xFFFFFFFF;
Status = gBS->AllocatePages (
AllocateMaxAddress,
EfiACPIMemoryNVS,
EFI_SIZE_TO_PAGES (BufferSize),
&TmpAddr
);
if (!EFI_ERROR (Status)) {
Buf = (VOID *) (UINTN) TmpAddr;
}
}
return Buf;
}
/**
The constructor function initialize USB3 debug port.
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
DebugCommunicationUsb3DxeConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
USB3_DEBUG_PORT_HANDLE UsbDbg;
USB3_DEBUG_PORT_HANDLE *Instance;
EFI_PHYSICAL_ADDRESS Address;
EFI_STATUS Status;
EFI_EVENT Event;
Instance = GetUsb3DebugPortInstance ();
Status = EfiGetSystemConfigurationTable (&gUsb3DbgGuid, (VOID **) &mUsb3Instance);
if (!EFI_ERROR (Status)) {
goto Done;
}
if (Instance == NULL) {
//
// Initialize USB debug
//
ZeroMem (&UsbDbg, sizeof (UsbDbg));
UsbDbg.Initialized = USB3DBG_UNINITIALIZED;
DiscoverInitializeUsbDebugPort (&UsbDbg);
Instance = &UsbDbg;
}
//
// It is first time to run DXE instance, copy Instance from Hob to ACPINvs.
//
Address = SIZE_4GB;
Status = gBS->AllocatePages (
AllocateMaxAddress,
EfiACPIMemoryNVS,
EFI_SIZE_TO_PAGES (sizeof (USB3_DEBUG_PORT_HANDLE)),
&Address
);
if (EFI_ERROR (Status)) {
return Status;
}
CopyMem (
(VOID *)(UINTN)Address,
Instance,
sizeof (USB3_DEBUG_PORT_HANDLE)
);
mUsb3Instance = (USB3_DEBUG_PORT_HANDLE *)(UINTN)Address;
Status = gBS->InstallConfigurationTable (&gUsb3DbgGuid, mUsb3Instance);
if (EFI_ERROR (Status)) {
return Status;
}
Done:
if ((mUsb3Instance != NULL) && mUsb3Instance->Ready && (mUsb3Instance->PciIoEvent == 0)) {
Status = Usb3NamedEventListen (
&gEfiPciIoProtocolGuid,
TPL_NOTIFY,
Usb3PciIoNotify,
&Event
);
if (!EFI_ERROR (Status)) {
mUsb3Instance->PciIoEvent = (EFI_PHYSICAL_ADDRESS) (UINTN) Event;
}
}
return EFI_SUCCESS;
}
/**
The destructor function.
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The destructor always returns EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
DebugCommunicationUsb3DxeDestructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
if ((mUsb3Instance != NULL) && (mUsb3Instance->PciIoEvent != 0)) {
//
// Close the event created.
//
gBS->CloseEvent ((EFI_EVENT) (UINTN) mUsb3Instance->PciIoEvent);
mUsb3Instance->PciIoEvent = 0;
}
return EFI_SUCCESS;
}
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