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Michael Kubacki 7a934d0bef MdeModulePkg: Replace include guards with #pragma once
Replace traditional `#ifndef`/`#define`/`#endif` include guards with
`#pragma` once.

`#pragma once` is a widely supported preprocessor directive that
prevents header files from being included multiple times. It is
supported by all toolchains used to build edk2: GCC, Clang/LLVM, and
MSVC.

Compared to macro-based include guards, `#pragma once`:

- Eliminates the risk of macro name collisions or copy/paste errors
  where two headers inadvertently use the same guard macro.
- Eliminate inconsistency in the way include guard macros are named
  (e.g., some files use `__FILE_H__`, others use `FILE_H_`, etc.).
- Reduces boilerplate (three lines replaced by one).
- Avoids polluting the macro namespace with guard symbols.
- Can improve build times as the preprocessor can skip re-opening the
  file entirely, rather than re-reading it to find the matching
  `#endif` ("multiple-include optimization").
  - Note that some compilers may already optimize traditional include
    guards, by recognzining the idiomatic pattern.

This change is made acknowledging that overall portability of the
code will technically be reduced, as `#pragma once` is not part of the
C/C++ standards.

However, this is considered acceptable given:

1. edk2 already defines a subset of supported compilers in
   BaseTools/Conf/tools_def.template, all of which have supported
   `#pragma once` for over two decades.
2. There have been concerns raised to the project about inconsistent
   include guard naming and potential macro collisions.

Approximate compiler support dates:

- MSVC: Supported since Visual C++ 4.2 (1996)
- GCC: Supported since 3.4 (2004)
  (http://gnu.ist.utl.pt/software/gcc/gcc-3.4/changes.html)
- Clang (LLVM based): Since initial release in 2007

Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
2026-02-23 21:01:28 +00:00

187 lines
6.5 KiB
C

/** @file
The device manager reference implement
Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#pragma once
#include <Guid/MdeModuleHii.h>
#include <Guid/HiiPlatformSetupFormset.h>
#include <Protocol/HiiConfigAccess.h>
#include <Protocol/PciIo.h>
#include <Library/PrintLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/BaseLib.h>
#include <Library/HiiLib.h>
#include <Library/DevicePathLib.h>
#include <Library/UefiBootManagerLib.h>
#include <Library/UefiHiiServicesLib.h>
//
// These are defined as the same with vfr file
//
#define DEVICE_MANAGER_FORMSET_GUID \
{ \
0x3ebfa8e6, 0x511d, 0x4b5b, {0xa9, 0x5f, 0xfb, 0x38, 0x26, 0xf, 0x1c, 0x27} \
}
#define LABEL_END 0xffff
#define LABEL_FORM_ID_OFFSET 0x0100
#define DEVICE_MANAGER_FORM_ID 0x1000
#define NETWORK_DEVICE_LIST_FORM_ID 0x1001
#define NETWORK_DEVICE_FORM_ID 0x1002
#define DEVICE_KEY_OFFSET 0x4000
#define NETWORK_DEVICE_LIST_KEY_OFFSET 0x2000
#define MAX_KEY_SECTION_LEN 0x1000
#define QUESTION_NETWORK_DEVICE_ID 0x3FFF
//
// These are the VFR compiler generated data representing our VFR data.
//
extern UINT8 DeviceManagerVfrBin[];
#define DEVICE_MANAGER_CALLBACK_DATA_SIGNATURE SIGNATURE_32 ('D', 'M', 'C', 'B')
///
/// HII specific Vendor Device Path definition.
///
typedef struct {
VENDOR_DEVICE_PATH VendorDevicePath;
EFI_DEVICE_PATH_PROTOCOL End;
} HII_VENDOR_DEVICE_PATH;
typedef struct {
UINTN Signature;
///
/// Device Manager HII relative handles
///
EFI_HII_HANDLE HiiHandle;
EFI_HANDLE DriverHandle;
///
/// Device Manager Produced protocols
///
EFI_HII_CONFIG_ACCESS_PROTOCOL ConfigAccess;
///
/// Configuration data
///
UINT8 VideoBios;
} DEVICE_MANAGER_CALLBACK_DATA;
typedef struct {
EFI_STRING_ID PromptId;
EFI_QUESTION_ID QuestionId;
} MENU_INFO_ITEM;
typedef struct {
UINTN CurListLen;
UINTN MaxListLen;
MENU_INFO_ITEM *NodeList;
} MAC_ADDRESS_NODE_LIST;
#define DEVICE_MANAGER_CALLBACK_DATA_FROM_THIS(a) \
CR (a, \
DEVICE_MANAGER_CALLBACK_DATA, \
ConfigAccess, \
DEVICE_MANAGER_CALLBACK_DATA_SIGNATURE \
)
typedef struct {
EFI_STRING_ID StringId;
UINT16 Class;
} DEVICE_MANAGER_MENU_ITEM;
/**
This function allows a caller to extract the current configuration for one
or more named elements from the target driver.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Request A null-terminated Unicode string in <ConfigRequest> format.
@param Progress On return, points to a character in the Request string.
Points to the string's null terminator if request was successful.
Points to the most recent '&' before the first failing name/value
pair (or the beginning of the string if the failure is in the
first name/value pair) if the request was not successful.
@param Results A null-terminated Unicode string in <ConfigAltResp> format which
has all values filled in for the names in the Request string.
String to be allocated by the called function.
@retval EFI_SUCCESS The Results is filled with the requested values.
@retval EFI_OUT_OF_RESOURCES Not enough memory to store the results.
@retval EFI_INVALID_PARAMETER Request is illegal syntax, or unknown name.
@retval EFI_NOT_FOUND Routing data doesn't match any storage in this driver.
**/
EFI_STATUS
EFIAPI
DeviceManagerExtractConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Request,
OUT EFI_STRING *Progress,
OUT EFI_STRING *Results
);
/**
This function processes the results of changes in configuration.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Configuration A null-terminated Unicode string in <ConfigResp> format.
@param Progress A pointer to a string filled in with the offset of the most
recent '&' before the first failing name/value pair (or the
beginning of the string if the failure is in the first
name/value pair) or the terminating NULL if all was successful.
@retval EFI_SUCCESS The Results is processed successfully.
@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_NOT_FOUND Routing data doesn't match any storage in this driver.
**/
EFI_STATUS
EFIAPI
DeviceManagerRouteConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Configuration,
OUT EFI_STRING *Progress
);
/**
This function is invoked if user selected a interactive opcode from Device Manager's
Formset. If user set VBIOS, the new value is saved to EFI variable.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Action Specifies the type of action taken by the browser.
@param QuestionId A unique value which is sent to the original exporting driver
so that it can identify the type of data to expect.
@param Type The type of value for the question.
@param Value A pointer to the data being sent to the original exporting driver.
@param ActionRequest On return, points to the action requested by the callback function.
@retval EFI_SUCCESS The callback successfully handled the action.
@retval EFI_INVALID_PARAMETER The setup browser call this function with invalid parameters.
**/
EFI_STATUS
EFIAPI
DeviceManagerCallback (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN EFI_BROWSER_ACTION Action,
IN EFI_QUESTION_ID QuestionId,
IN UINT8 Type,
IN EFI_IFR_TYPE_VALUE *Value,
OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
);