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/** @file
Copyright (c) 2016, Linaro, Ltd. 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 <PiDxe.h>
#include <Guid/NonDiscoverableDevice.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/DevicePathLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/NonDiscoverableDeviceRegistrationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Protocol/DevicePath.h>
#include <Protocol/NonDiscoverableDevice.h>
/**
Get Guid form the type of non-discoverable device.
@param[in] Type The type of non-discoverable device.
@retval Return the Guid.
**/
STATIC
CONST EFI_GUID *
GetGuidFromType (
IN NON_DISCOVERABLE_DEVICE_TYPE Type
)
{
switch (Type) {
case NonDiscoverableDeviceTypeAhci:
return &gEdkiiNonDiscoverableAhciDeviceGuid;
case NonDiscoverableDeviceTypeAmba:
return &gEdkiiNonDiscoverableAmbaDeviceGuid;
case NonDiscoverableDeviceTypeEhci:
return &gEdkiiNonDiscoverableEhciDeviceGuid;
case NonDiscoverableDeviceTypeNvme:
return &gEdkiiNonDiscoverableNvmeDeviceGuid;
case NonDiscoverableDeviceTypeOhci:
return &gEdkiiNonDiscoverableOhciDeviceGuid;
case NonDiscoverableDeviceTypeSdhci:
return &gEdkiiNonDiscoverableSdhciDeviceGuid;
case NonDiscoverableDeviceTypeUfs:
return &gEdkiiNonDiscoverableUfsDeviceGuid;
case NonDiscoverableDeviceTypeUhci:
return &gEdkiiNonDiscoverableUhciDeviceGuid;
case NonDiscoverableDeviceTypeXhci:
return &gEdkiiNonDiscoverableXhciDeviceGuid;
default:
return NULL;
}
}
#pragma pack (1)
typedef struct {
VENDOR_DEVICE_PATH Vendor;
UINT64 BaseAddress;
UINT8 ResourceType;
EFI_DEVICE_PATH_PROTOCOL End;
} NON_DISCOVERABLE_DEVICE_PATH;
#pragma pack ()
/**
Register a non-discoverable MMIO device.
@param[in] Type The type of non-discoverable device
@param[in] DmaType Whether the device is DMA coherent
@param[in] InitFunc Initialization routine to be invoked when
the device is enabled
@param[in,out] Handle The handle onto which to install the
non-discoverable device protocol.
If Handle is NULL or *Handle is NULL, a
new handle will be allocated.
@param[in] NumMmioResources The number of UINTN base/size pairs that
follow, each describing an MMIO region
owned by the device
@param[in] ... The variable argument list which contains the
info about MmioResources.
@retval EFI_SUCCESS The registration succeeded.
@retval EFI_INVALID_PARAMETER An invalid argument was given
@retval Other The registration failed.
**/
EFI_STATUS
EFIAPI
RegisterNonDiscoverableMmioDevice (
IN NON_DISCOVERABLE_DEVICE_TYPE Type,
IN NON_DISCOVERABLE_DEVICE_DMA_TYPE DmaType,
IN NON_DISCOVERABLE_DEVICE_INIT InitFunc,
IN OUT EFI_HANDLE *Handle OPTIONAL,
IN UINTN NumMmioResources,
...
)
{
NON_DISCOVERABLE_DEVICE *Device;
NON_DISCOVERABLE_DEVICE_PATH *DevicePath;
EFI_HANDLE LocalHandle;
EFI_STATUS Status;
UINTN AllocSize;
UINTN Index;
VA_LIST Args;
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Desc;
EFI_ACPI_END_TAG_DESCRIPTOR *End;
UINTN Base, Size;
if (Type >= NonDiscoverableDeviceTypeMax ||
DmaType >= NonDiscoverableDeviceDmaTypeMax ||
NumMmioResources == 0) {
return EFI_INVALID_PARAMETER;
}
if (Handle == NULL) {
Handle = &LocalHandle;
LocalHandle = NULL;
}
AllocSize = sizeof *Device +
NumMmioResources * sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) +
sizeof (EFI_ACPI_END_TAG_DESCRIPTOR);
Device = (NON_DISCOVERABLE_DEVICE *)AllocateZeroPool (AllocSize);
if (Device == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Device->Type = GetGuidFromType (Type);
ASSERT (Device->Type != NULL);
Device->DmaType = DmaType;
Device->Initialize = InitFunc;
Device->Resources = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)(Device + 1);
VA_START (Args, NumMmioResources);
for (Index = 0; Index < NumMmioResources; Index++) {
Desc = &Device->Resources [Index];
Base = VA_ARG (Args, UINTN);
Size = VA_ARG (Args, UINTN);
Desc->Desc = ACPI_ADDRESS_SPACE_DESCRIPTOR;
Desc->Len = sizeof *Desc - 3;
Desc->AddrRangeMin = Base;
Desc->AddrLen = Size;
Desc->AddrRangeMax = Base + Size - 1;
Desc->ResType = ACPI_ADDRESS_SPACE_TYPE_MEM;
Desc->AddrSpaceGranularity = ((EFI_PHYSICAL_ADDRESS)Base + Size > SIZE_4GB) ? 64 : 32;
Desc->AddrTranslationOffset = 0;
}
VA_END (Args);
End = (EFI_ACPI_END_TAG_DESCRIPTOR *)&Device->Resources [NumMmioResources];
End->Desc = ACPI_END_TAG_DESCRIPTOR;
End->Checksum = 0;
DevicePath = (NON_DISCOVERABLE_DEVICE_PATH *)CreateDeviceNode (
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
sizeof (*DevicePath));
if (DevicePath == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto FreeDevice;
}
CopyGuid (&DevicePath->Vendor.Guid, &gEdkiiNonDiscoverableDeviceProtocolGuid);
//
// Use the base address and type of the first region to
// make the device path unique
//
DevicePath->BaseAddress = Device->Resources [0].AddrRangeMin;
DevicePath->ResourceType = Device->Resources [0].ResType;
SetDevicePathNodeLength (&DevicePath->Vendor,
sizeof (*DevicePath) - sizeof (DevicePath->End));
SetDevicePathEndNode (&DevicePath->End);
Status = gBS->InstallMultipleProtocolInterfaces (Handle,
&gEdkiiNonDiscoverableDeviceProtocolGuid, Device,
&gEfiDevicePathProtocolGuid, DevicePath,
NULL);
if (EFI_ERROR (Status)) {
goto FreeDevicePath;
}
return EFI_SUCCESS;
FreeDevicePath:
FreePool (DevicePath);
FreeDevice:
FreePool (Device);
return Status;
}
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