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Diffstat (limited to 'EDK/Foundation/Efi/Protocol/DevicePathUtilities/DevicePathUtilities.h')
| -rw-r--r-- | EDK/Foundation/Efi/Protocol/DevicePathUtilities/DevicePathUtilities.h | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/EDK/Foundation/Efi/Protocol/DevicePathUtilities/DevicePathUtilities.h b/EDK/Foundation/Efi/Protocol/DevicePathUtilities/DevicePathUtilities.h new file mode 100644 index 0000000..2cf8d89 --- /dev/null +++ b/EDK/Foundation/Efi/Protocol/DevicePathUtilities/DevicePathUtilities.h @@ -0,0 +1,225 @@ +/*++ + +Copyright (c) 2006 - 2007, Intel Corporation +All rights reserved. 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. + +Module Name: + + DevicePathUtilities.h + +Abstract: + +--*/ + +#ifndef _DEVICE_PATH_UTILITIES_PROTOCOL_H_ +#define _DEVICE_PATH_UTILITIES_PROTOCOL_H_ + +// +// Device Path Utilities protocol +// +#define EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID \ + { \ + 0x379be4e, 0xd706, 0x437d, 0xb0, 0x37, 0xed, 0xb8, 0x2f, 0xb7, 0x72, 0xa4 \ + } + +typedef +UINTN +(EFIAPI *EFI_DEVICE_PATH_UTILS_GET_DEVICE_PATH_SIZE) ( + IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath + ) +/*++ + + Routine Description: + Returns the size of the device path, in bytes. + + Arguments: + DevicePath - Points to the start of the EFI device path. + + Returns: + Size - Size of the specified device path, in bytes, including the end-of-path tag. + +--*/ +; + +typedef +EFI_DEVICE_PATH_PROTOCOL* +(EFIAPI *EFI_DEVICE_PATH_UTILS_DUP_DEVICE_PATH) ( + IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath + ) +/*++ + + Routine Description: + Create a duplicate of the specified path. + + Arguments: + DevicePath - Points to the source EFI device path. + + Returns: + Pointer - A pointer to the duplicate device path. + NULL - Insufficient memory. + +--*/ +; + +typedef +EFI_DEVICE_PATH_PROTOCOL* +(EFIAPI *EFI_DEVICE_PATH_UTILS_APPEND_PATH) ( + IN CONST EFI_DEVICE_PATH_PROTOCOL *Src1, + IN CONST EFI_DEVICE_PATH_PROTOCOL *Src2 + ) +/*++ + + Routine Description: + Create a new path by appending the second device path to the first. + + Arguments: + Src1 - Points to the first device path. If NULL, then it is ignored. + Src2 - Points to the second device path. If NULL, then it is ignored. + + Returns: + Pointer - A pointer to the newly created device path. + NULL - Memory could not be allocated + or either DevicePath or DeviceNode is NULL. + +--*/ +; + +typedef +EFI_DEVICE_PATH_PROTOCOL* +(EFIAPI *EFI_DEVICE_PATH_UTILS_APPEND_NODE) ( + IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath, + IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode + ) +/*++ + + Routine Description: + Creates a new path by appending the device node to the device path. + + Arguments: + DevicePath - Points to the device path. + DeviceNode - Points to the device node. + + Returns: + Pointer - A pointer to the allocated device node. + NULL - Memory could not be allocated + or either DevicePath or DeviceNode is NULL. + +--*/ +; + +typedef +EFI_DEVICE_PATH_PROTOCOL* +(EFIAPI *EFI_DEVICE_PATH_UTILS_APPEND_INSTANCE) ( + IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath, + IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathInstance + ) +/*++ + + Routine Description: + Creates a new path by appending the specified device path instance to the specified device path. + + Arguments: + DevicePath - Points to the device path. If NULL, then ignored. + DevicePathInstance - Points to the device path instance. + + Returns: + Pointer - A pointer to the newly created device path + NULL - Memory could not be allocated or DevicePathInstance is NULL. + +--*/ +; + +typedef +EFI_DEVICE_PATH_PROTOCOL* +(EFIAPI *EFI_DEVICE_PATH_UTILS_GET_NEXT_INSTANCE) ( + IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePathInstance, + OUT UINTN *DevicePathInstanceSize + ) +/*++ + + Routine Description: + Creates a copy of the current device path instance and returns a pointer to the next device path instance. + + Arguments: + DevicePathInstance - On input, this holds the pointer to the current device path + instance. On output, this holds the pointer to the next + device path instance or NULL if there are no more device + path instances in the device path. + DevicePathInstanceSize - On output, this holds the size of the device path instance, + in bytes or zero, if DevicePathInstance is zero. + + Returns: + Pointer - A pointer to the copy of the current device path instance. + NULL - DevicePathInstace was NULL on entry or there was insufficient memory. + +--*/ +; + +typedef +BOOLEAN +(EFIAPI *EFI_DEVICE_PATH_UTILS_IS_MULTI_INSTANCE) ( + IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath + ) +/*++ + + Routine Description: + Returns whether a device path is multi-instance. + + Arguments: + DevicePath - Points to the device path. If NULL, then ignored. + + Returns: + TRUE - The device path has more than one instance + FALSE - The device path is empty or contains only a single instance. + +--*/ +; + +typedef +EFI_DEVICE_PATH_PROTOCOL* +(EFIAPI *EFI_DEVICE_PATH_UTILS_CREATE_NODE) ( + IN UINT8 NodeType, + IN UINT8 NodeSubType, + IN UINT16 NodeLength + ) +/*++ + + Routine Description: + Creates a device node + + Arguments: + NodeType - NodeType is the device node type (EFI_DEVICE_PATH.Type) for + the new device node. + NodeSubType - NodeSubType is the device node sub-type + EFI_DEVICE_PATH.SubType) for the new device node. + NodeLength - NodeLength is the length of the device node + (EFI_DEVICE_PATH.Length) for the new device node. + + Returns: + Pointer - A pointer to the newly created device node. + NULL - NodeLength is less than + the size of the header or there was insufficient memory. + +--*/ +; + +typedef struct { + EFI_DEVICE_PATH_UTILS_GET_DEVICE_PATH_SIZE GetDevicePathSize; + EFI_DEVICE_PATH_UTILS_DUP_DEVICE_PATH DuplicateDevicePath; + EFI_DEVICE_PATH_UTILS_APPEND_PATH AppendDevicePath; + EFI_DEVICE_PATH_UTILS_APPEND_NODE AppendDeviceNode; + EFI_DEVICE_PATH_UTILS_APPEND_INSTANCE AppendDevicePathInstance; + EFI_DEVICE_PATH_UTILS_GET_NEXT_INSTANCE GetNextDevicePathInstance; + EFI_DEVICE_PATH_UTILS_IS_MULTI_INSTANCE IsDevicePathMultiInstance; + EFI_DEVICE_PATH_UTILS_CREATE_NODE CreateDeviceNode; +} EFI_DEVICE_PATH_UTILITIES_PROTOCOL; + +extern EFI_GUID gEfiDevicePathUtilitiesProtocolGuid; + +#endif |