c7c02fabf1
When Block I/O detects the media changed, block driver will reinstall block I/O protocol. If it happened during start() of partition driver, the reinstall protocol would results in the reentrant of the start(). In the patch, we check status of child detection to see whether need clean up the opened block I/O protocol in Start(). Besides, some checking of return status added in usbbus driver to improve robusticiy of the driver. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2288 6f19259b-4bc3-4df7-8a09-765794883524
136 lines
4.3 KiB
C
136 lines
4.3 KiB
C
/*++
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Copyright (c) 2006, Intel Corporation
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All rights reserved. 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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Module Name:
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Partition.h
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Abstract:
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Partition driver that produces logical BlockIo devices from a physical
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BlockIo device. The logical BlockIo devices are based on the format
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of the raw block devices media. Currently "El Torito CD-ROM", Legacy
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MBR, and GPT partition schemes are supported.
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Revision History
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--*/
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#ifndef __PARTITION_H__
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#define __PARTITION_H__
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#include <IndustryStandard/Mbr.h>
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#include <IndustryStandard/ElTorito.h>
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#include <IndustryStandard/EfiGpt.h>
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//
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// Partition private data
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//
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#define PARTITION_PRIVATE_DATA_SIGNATURE EFI_SIGNATURE_32 ('P', 'a', 'r', 't')
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typedef struct {
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UINT64 Signature;
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EFI_HANDLE Handle;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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EFI_BLOCK_IO_PROTOCOL BlockIo;
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EFI_BLOCK_IO_MEDIA Media;
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EFI_DISK_IO_PROTOCOL *DiskIo;
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EFI_BLOCK_IO_PROTOCOL *ParentBlockIo;
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UINT64 Start;
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UINT64 End;
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UINT32 BlockSize;
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EFI_GUID *EspGuid;
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} PARTITION_PRIVATE_DATA;
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#define PARTITION_DEVICE_FROM_BLOCK_IO_THIS(a) CR (a, PARTITION_PRIVATE_DATA, BlockIo, PARTITION_PRIVATE_DATA_SIGNATURE)
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//
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// Global Variables
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//
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extern EFI_DRIVER_BINDING_PROTOCOL gPartitionDriverBinding;
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extern EFI_COMPONENT_NAME_PROTOCOL gPartitionComponentName;
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//
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// Extract INT32 from char array
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//
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#define UNPACK_INT32(a) (INT32)( (((UINT8 *) a)[0] << 0) | \
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(((UINT8 *) a)[1] << 8) | \
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(((UINT8 *) a)[2] << 16) | \
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(((UINT8 *) a)[3] << 24) )
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//
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// Extract UINT32 from char array
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//
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#define UNPACK_UINT32(a) (UINT32)( (((UINT8 *) a)[0] << 0) | \
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(((UINT8 *) a)[1] << 8) | \
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(((UINT8 *) a)[2] << 16) | \
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(((UINT8 *) a)[3] << 24) )
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EFI_STATUS
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PartitionInstallChildHandle (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE ParentHandle,
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IN EFI_DISK_IO_PROTOCOL *ParentDiskIo,
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IN EFI_BLOCK_IO_PROTOCOL *ParentBlockIo,
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IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,
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IN EFI_DEVICE_PATH_PROTOCOL *DevicePathNode,
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IN UINT64 Start,
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IN UINT64 End,
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IN UINT32 BlockSize,
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IN BOOLEAN InstallEspGuid
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)
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;
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EFI_STATUS
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PartitionInstallGptChildHandles (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Handle,
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IN EFI_DISK_IO_PROTOCOL *DiskIo,
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IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
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IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
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)
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;
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EFI_STATUS
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PartitionInstallElToritoChildHandles (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Handle,
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IN EFI_DISK_IO_PROTOCOL *DiskIo,
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IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
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IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
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)
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;
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EFI_STATUS
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PartitionInstallMbrChildHandles (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Handle,
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IN EFI_DISK_IO_PROTOCOL *DiskIo,
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IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
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IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
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)
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;
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typedef
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EFI_STATUS
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(*PARTITION_DETECT_ROUTINE) (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Handle,
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IN EFI_DISK_IO_PROTOCOL *DiskIo,
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IN EFI_BLOCK_IO_PROTOCOL *BlockIo,
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IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
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);
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#endif
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