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Maurice Ma
3422b34208
USB sub-system will have host controller scheduling frames on its own once it is initialized and enabled. Leaving it running while payload restarting or OS booting could potentially cause memory corruption since the DMA might still be running on the background targeting to previously allocated memory. The safer approach is to stop the USB controller. It also fixed #351. Signed-off-by: Maurice Ma <maurice.ma@intel.com>
44 lines
976 B
C
44 lines
976 B
C
/** @file
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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 __XHCI_LIB_H__
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#define __XHCI_LIB_H__
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#include <Ppi/Usb2HostController.h>
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/**
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USB initialization interface.
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@param BaseAddress Base address of the USB host controller.
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@param UsbHostHandle Pointer to return the USB host controller handle.
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@retval EFI_SUCCESS USB host controller was initialized successfully.
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**/
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EFI_STATUS
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EFIAPI
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UsbInitCtrl (
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IN UINT32 BaseAddress,
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IN OUT EFI_HANDLE *UsbHostHandle
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);
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/**
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USB deinitialization interface.
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@param UsbHostHandle USB host controller handle to deinitalize.
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@retval EFI_SUCCESS USB host controller was deinitialized successfully.
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@retval EFI_INVALID_PARAMETER USB host controller handle is invalid.
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**/
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EFI_STATUS
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EFIAPI
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UsbDeinitCtrl (
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IN EFI_HANDLE UsbHostHandle
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);
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#endif
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