diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/MdeModulePkg/Core/Dxe/Hand/Handle.h | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/MdeModulePkg/Core/Dxe/Hand/Handle.h')
| -rw-r--r-- | roms/edk2/MdeModulePkg/Core/Dxe/Hand/Handle.h | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/roms/edk2/MdeModulePkg/Core/Dxe/Hand/Handle.h b/roms/edk2/MdeModulePkg/Core/Dxe/Hand/Handle.h new file mode 100644 index 000000000..83eb2b9f3 --- /dev/null +++ b/roms/edk2/MdeModulePkg/Core/Dxe/Hand/Handle.h @@ -0,0 +1,264 @@ +/** @file
+ Support functions for managing protocol.
+
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _HAND_H_
+#define _HAND_H_
+
+
+#define EFI_HANDLE_SIGNATURE SIGNATURE_32('h','n','d','l')
+
+///
+/// IHANDLE - contains a list of protocol handles
+///
+typedef struct {
+ UINTN Signature;
+ /// All handles list of IHANDLE
+ LIST_ENTRY AllHandles;
+ /// List of PROTOCOL_INTERFACE's for this handle
+ LIST_ENTRY Protocols;
+ UINTN LocateRequest;
+ /// The Handle Database Key value when this handle was last created or modified
+ UINT64 Key;
+} IHANDLE;
+
+#define ASSERT_IS_HANDLE(a) ASSERT((a)->Signature == EFI_HANDLE_SIGNATURE)
+
+#define PROTOCOL_ENTRY_SIGNATURE SIGNATURE_32('p','r','t','e')
+
+///
+/// PROTOCOL_ENTRY - each different protocol has 1 entry in the protocol
+/// database. Each handler that supports this protocol is listed, along
+/// with a list of registered notifies.
+///
+typedef struct {
+ UINTN Signature;
+ /// Link Entry inserted to mProtocolDatabase
+ LIST_ENTRY AllEntries;
+ /// ID of the protocol
+ EFI_GUID ProtocolID;
+ /// All protocol interfaces
+ LIST_ENTRY Protocols;
+ /// Registerd notification handlers
+ LIST_ENTRY Notify;
+} PROTOCOL_ENTRY;
+
+
+#define PROTOCOL_INTERFACE_SIGNATURE SIGNATURE_32('p','i','f','c')
+
+///
+/// PROTOCOL_INTERFACE - each protocol installed on a handle is tracked
+/// with a protocol interface structure
+///
+typedef struct {
+ UINTN Signature;
+ /// Link on IHANDLE.Protocols
+ LIST_ENTRY Link;
+ /// Back pointer
+ IHANDLE *Handle;
+ /// Link on PROTOCOL_ENTRY.Protocols
+ LIST_ENTRY ByProtocol;
+ /// The protocol ID
+ PROTOCOL_ENTRY *Protocol;
+ /// The interface value
+ VOID *Interface;
+ /// OPEN_PROTOCOL_DATA list
+ LIST_ENTRY OpenList;
+ UINTN OpenListCount;
+
+} PROTOCOL_INTERFACE;
+
+#define OPEN_PROTOCOL_DATA_SIGNATURE SIGNATURE_32('p','o','d','l')
+
+typedef struct {
+ UINTN Signature;
+ ///Link on PROTOCOL_INTERFACE.OpenList
+ LIST_ENTRY Link;
+
+ EFI_HANDLE AgentHandle;
+ EFI_HANDLE ControllerHandle;
+ UINT32 Attributes;
+ UINT32 OpenCount;
+} OPEN_PROTOCOL_DATA;
+
+
+#define PROTOCOL_NOTIFY_SIGNATURE SIGNATURE_32('p','r','t','n')
+
+///
+/// PROTOCOL_NOTIFY - used for each register notification for a protocol
+///
+typedef struct {
+ UINTN Signature;
+ PROTOCOL_ENTRY *Protocol;
+ /// All notifications for this protocol
+ LIST_ENTRY Link;
+ /// Event to notify
+ EFI_EVENT Event;
+ /// Last position notified
+ LIST_ENTRY *Position;
+} PROTOCOL_NOTIFY;
+
+
+
+/**
+ Finds the protocol entry for the requested protocol.
+ The gProtocolDatabaseLock must be owned
+
+ @param Protocol The ID of the protocol
+ @param Create Create a new entry if not found
+
+ @return Protocol entry
+
+**/
+PROTOCOL_ENTRY *
+CoreFindProtocolEntry (
+ IN EFI_GUID *Protocol,
+ IN BOOLEAN Create
+ );
+
+
+/**
+ Signal event for every protocol in protocol entry.
+
+ @param ProtEntry Protocol entry
+
+**/
+VOID
+CoreNotifyProtocolEntry (
+ IN PROTOCOL_ENTRY *ProtEntry
+ );
+
+
+/**
+ Finds the protocol instance for the requested handle and protocol.
+ Note: This function doesn't do parameters checking, it's caller's responsibility
+ to pass in valid parameters.
+
+ @param Handle The handle to search the protocol on
+ @param Protocol GUID of the protocol
+ @param Interface The interface for the protocol being searched
+
+ @return Protocol instance (NULL: Not found)
+
+**/
+PROTOCOL_INTERFACE *
+CoreFindProtocolInterface (
+ IN IHANDLE *Handle,
+ IN EFI_GUID *Protocol,
+ IN VOID *Interface
+ );
+
+
+/**
+ Removes Protocol from the protocol list (but not the handle list).
+
+ @param Handle The handle to remove protocol on.
+ @param Protocol GUID of the protocol to be moved
+ @param Interface The interface of the protocol
+
+ @return Protocol Entry
+
+**/
+PROTOCOL_INTERFACE *
+CoreRemoveInterfaceFromProtocol (
+ IN IHANDLE *Handle,
+ IN EFI_GUID *Protocol,
+ IN VOID *Interface
+ );
+
+
+/**
+ Connects a controller to a driver.
+
+ @param ControllerHandle Handle of the controller to be
+ connected.
+ @param ContextDriverImageHandles DriverImageHandle A pointer to an
+ ordered list of driver image
+ handles.
+ @param RemainingDevicePath RemainingDevicePath A pointer to
+ the device path that specifies a
+ child of the controller
+ specified by ControllerHandle.
+
+ @retval EFI_SUCCESS One or more drivers were
+ connected to ControllerHandle.
+ @retval EFI_OUT_OF_RESOURCES No enough system resources to
+ complete the request.
+ @retval EFI_NOT_FOUND No drivers were connected to
+ ControllerHandle.
+
+**/
+EFI_STATUS
+CoreConnectSingleController (
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_HANDLE *ContextDriverImageHandles OPTIONAL,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL
+ );
+
+/**
+ Attempts to disconnect all drivers that are using the protocol interface being queried.
+ If failed, reconnect all drivers disconnected.
+ Note: This function doesn't do parameters checking, it's caller's responsibility
+ to pass in valid parameters.
+
+ @param UserHandle The handle on which the protocol is installed
+ @param Prot The protocol to disconnect drivers from
+
+ @retval EFI_SUCCESS Drivers using the protocol interface are all
+ disconnected
+ @retval EFI_ACCESS_DENIED Failed to disconnect one or all of the drivers
+
+**/
+EFI_STATUS
+CoreDisconnectControllersUsingProtocolInterface (
+ IN EFI_HANDLE UserHandle,
+ IN PROTOCOL_INTERFACE *Prot
+ );
+
+
+/**
+ Acquire lock on gProtocolDatabaseLock.
+
+**/
+VOID
+CoreAcquireProtocolLock (
+ VOID
+ );
+
+
+/**
+ Release lock on gProtocolDatabaseLock.
+
+**/
+VOID
+CoreReleaseProtocolLock (
+ VOID
+ );
+
+
+/**
+ Check whether a handle is a valid EFI_HANDLE
+
+ @param UserHandle The handle to check
+
+ @retval EFI_INVALID_PARAMETER The handle is NULL or not a valid EFI_HANDLE.
+ @retval EFI_SUCCESS The handle is valid EFI_HANDLE.
+
+**/
+EFI_STATUS
+CoreValidateHandle (
+ IN EFI_HANDLE UserHandle
+ );
+
+//
+// Externs
+//
+extern EFI_LOCK gProtocolDatabaseLock;
+extern LIST_ENTRY gHandleList;
+extern UINT64 gHandleDatabaseKey;
+
+#endif
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